/* ═══════════════════════════════════════════════════════════════════════
   Mohamed Abdalkader — AI Engineer Portfolio
   css/style.css — v2 — Complete Stylesheet
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── 1. RESET & BASE ───────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img  { display: block; max-width: 100%; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ─── 2. CSS VARIABLES ──────────────────────────────────────────────── */
:root {
  /* ── Dark theme (default) ── */
  --bg-primary:       #080c12;
  --bg-secondary:     #0d1219;
  --bg-card:          #111722;
  --bg-card-hover:    #161e2e;
  --bg-glass:         rgba(8, 12, 18, 0.90);
  --text-primary:     #e2e8f4;
  --text-secondary:   #8896ae;
  --text-muted:       #4e5a6e;
  --accent:           #38bdf8;
  --accent-dim:       rgba(56, 189, 248, 0.09);
  --accent-glow:      rgba(56, 189, 248, 0.20);
  --gold:             #edb84a;
  --gold-dim:         rgba(237, 184, 74, 0.12);
  --ramadan:          #c9973a;
  --ramadan-moon:     #e8c97a;
  --success:          #34d399;
  --success-dim:      rgba(52, 211, 153, 0.11);
  --warning:          #fbbf24;
  --warning-dim:      rgba(251, 191, 36, 0.11);
  --error:            #f87171;
  --error-dim:        rgba(248, 113, 113, 0.11);
  --border:           rgba(255, 255, 255, 0.065);
  --border-accent:    rgba(56, 189, 248, 0.22);
  --shadow-sm:        0 2px 12px rgba(0,0,0,0.40);
  --shadow-md:        0 6px 28px rgba(0,0,0,0.55);
  --shadow-accent:    0 0 30px rgba(56,189,248,0.10);
  --radius-sm:        5px;
  --radius-md:        10px;
  --radius-lg:        16px;
  --radius-xl:        24px;
  --font-display:     'Syne', sans-serif;
  --font-body:        'Outfit', sans-serif;
  --font-mono:        'JetBrains Mono', monospace;
  --transition:       0.20s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height:       66px;
}

/* ── Light theme ── */
[data-theme="light"] {
  --bg-primary:       #f5f8fc;
  --bg-secondary:     #edf2f9;
  --bg-card:          #ffffff;
  --bg-card-hover:    #f8fafd;
  --bg-glass:         rgba(245, 248, 252, 0.93);
  --text-primary:     #0f172a;
  --text-secondary:   #475569;
  --text-muted:       #94a3b8;
  --accent:           #0284c7;
  --accent-dim:       rgba(2, 132, 199, 0.07);
  --accent-glow:      rgba(2, 132, 199, 0.16);
  --border:           rgba(0, 0, 0, 0.07);
  --border-accent:    rgba(2, 132, 199, 0.22);
  --shadow-sm:        0 2px 10px rgba(0,0,0,0.07);
  --shadow-md:        0 6px 24px rgba(0,0,0,0.11);
  --shadow-accent:    0 0 24px rgba(2,132,199,0.09);
}

/* ─── 3. TYPOGRAPHY ─────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.22;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2rem, 4.8vw, 3.2rem); }
h2 { font-size: clamp(1.55rem, 3.2vw, 2.15rem); }
h3 { font-size: clamp(1.05rem, 2vw, 1.3rem); }
h4 { font-size: 1rem; }

p  { font-size: 1rem; line-height: 1.78; color: var(--text-secondary); }

.mono { font-family: var(--font-mono); font-size: 0.875em; letter-spacing: 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.775rem;
  letter-spacing: 0.09em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.55rem;
}

.gradient-text {
  background: linear-gradient(140deg, var(--text-primary) 25%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── 4. LAYOUT ─────────────────────────────────────────────────────── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(1.1rem, 4vw, 2.5rem);
}

.section { padding: clamp(4rem, 7vw, 5.5rem) 0; }
.section-header { margin-bottom: 2.75rem; }

.grid-auto  { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 1.35rem; }

.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.section-cta { text-align: center; margin-top: 2.75rem; }

/* ─── 5. BUTTONS ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.62rem 1.4rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 500;
  line-height: 1;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  border: 1.5px solid transparent;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-primary  { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: transparent; color: var(--accent); box-shadow: var(--shadow-accent); }

.btn-outline  { background: transparent; color: var(--accent); border-color: var(--border-accent); }
.btn-outline:hover { background: var(--accent-dim); box-shadow: var(--shadow-accent); }

.btn-ghost    { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-ghost:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.14); background: var(--bg-card); }

.btn-sm { padding: 0.42rem 0.95rem; font-size: 0.84rem; }
.btn-xs { padding: 0.32rem 0.75rem; font-size: 0.78rem; }

/* ─── 6. TAGS & BADGES ──────────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.24rem 0.6rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  white-space: nowrap;
}
.tag:hover { border-color: var(--border-accent); color: var(--accent); }

.category-pill {
  display: inline-block;
  padding: 0.18rem 0.6rem;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 500;
  color: var(--accent);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  font-size: 0.70rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}
.status-badge::before {
  content: '';
  width: 5.5px;
  height: 5.5px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-live    { background: var(--success-dim); color: var(--success); border: 1px solid rgba(52,211,153,0.22); }
.status-live::before    { background: var(--success); animation: pulse-dot 2s ease infinite; }
.status-private { background: var(--error-dim);   color: var(--error);   border: 1px solid rgba(248,113,113,0.18); }
.status-private::before { background: var(--error); }
.status-wip     { background: var(--warning-dim); color: var(--warning); border: 1px solid rgba(251,191,36,0.18); }
.status-wip::before     { background: var(--warning); }

/* ─── 7. ANIMATIONS ─────────────────────────────────────────────────── */
@keyframes fadeUp    { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn    { from { opacity:0; } to { opacity:1; } }
@keyframes float     { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-10px); } }
@keyframes orb-drift { 0%,100% { transform:translate(0,0) scale(1); } 50% { transform:translate(14px,-18px) scale(1.04); } }
@keyframes blink     { 0%,100% { opacity:1; } 50% { opacity:0; } }
@keyframes crescent-glow { 0%,100% { text-shadow:0 0 16px #c9973a,0 0 32px #e8c97a44; } 50% { text-shadow:0 0 28px #c9973a,0 0 52px #e8c97a66; } }
@keyframes stars-twinkle { 0%,100% { opacity:0.3; } 50% { opacity:1; } }
@keyframes pulse-dot { 0%,100% { opacity:1; } 50% { opacity:0.35; } }

/* Scroll-triggered fade-up */
[data-animate] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.52s ease, transform 0.52s ease;
}
[data-animate].visible { opacity:1; transform:translateY(0); }
[data-animate][data-delay="1"] { transition-delay: 0.07s; }
[data-animate][data-delay="2"] { transition-delay: 0.14s; }
[data-animate][data-delay="3"] { transition-delay: 0.21s; }
[data-animate][data-delay="4"] { transition-delay: 0.28s; }
[data-animate][data-delay="5"] { transition-delay: 0.35s; }

/* ─── 8. RAMADAN BANNER (SEASONAL) ─────────────────────────────────── */
/* To hide: add style="display:none" to #ramadanBanner
   To remove permanently: delete the entire div#ramadanBanner block     */
.ramadan-banner {
  position: relative;
  background: linear-gradient(135deg, #181000 0%, #221600 50%, #181000 100%);
  border-bottom: 1px solid rgba(201,151,58,0.20);
  padding: 0.6rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 100;
  overflow: hidden;
}
.ramadan-banner::before {
  content:'';
  position:absolute;inset:0;
  background: repeating-linear-gradient(90deg,transparent,transparent 58px,rgba(201,151,58,0.035) 58px,rgba(201,151,58,0.035) 59px);
}
.ramadan-stars { display:flex;gap:0.4rem;align-items:center;position:absolute;left:1.5rem; }
.ramadan-stars span { color:var(--ramadan-moon);font-size:0.68rem;animation:stars-twinkle 2s ease infinite; }
.ramadan-stars span:nth-child(2) { animation-delay:.5s; }
.ramadan-stars span:nth-child(3) { animation-delay:1s; }
.ramadan-stars span:nth-child(4) { animation-delay:1.5s; }
.ramadan-content { display:flex;align-items:center;gap:0.7rem;z-index:1; }
.ramadan-crescent { font-size:1.05rem;animation:crescent-glow 3s ease infinite;line-height:1; }
.ramadan-content p { font-size:0.83rem;color:var(--ramadan-moon);margin:0;line-height:1; }
.ramadan-cta {
  display:inline-flex;padding:0.28rem 0.75rem;
  background:rgba(201,151,58,0.13);border:1px solid rgba(201,151,58,0.32);
  border-radius:var(--radius-sm);color:var(--ramadan-moon);
  font-size:0.78rem;font-family:var(--font-mono);
  transition:all var(--transition);white-space:nowrap;
}
.ramadan-cta:hover { background:rgba(201,151,58,0.25); }
.ramadan-close {
  position:absolute;right:1rem;top:50%;transform:translateY(-50%);
  width:24px;height:24px;display:flex;align-items:center;justify-content:center;
  color:var(--ramadan);font-size:1.1rem;border-radius:var(--radius-sm);
  transition:all var(--transition);cursor:pointer;z-index:2;
}
.ramadan-close:hover { color:var(--ramadan-moon);background:rgba(201,151,58,0.10); }

/* ─── 9. NAVBAR ─────────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: var(--banner-height, 0px); left: 0; right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: 999;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 clamp(1.1rem, 4vw, 2.5rem);
}

/* ── Logo image ── */
.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo img {
  height: 36px;
  width: auto;
  display: block;
  object-fit: contain;
  /* Invert logo in light mode for visibility — adjust if your logo is already multi-color */
}
[data-theme="light"] .nav-logo img {
  filter: brightness(0) saturate(100%) invert(22%) sepia(90%) saturate(700%) hue-rotate(185deg) brightness(90%);
}

/* Fallback text logo if logo.png isn't dropped in yet */
.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.nav-logo-text .bracket { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.nav-link {
  position: relative;
  padding: 0.42rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-link.active { color: var(--accent); }
.nav-link.active::after {
  content:'';
  position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}

.nav-right { display:flex;align-items:center;gap:0.45rem; }

.theme-toggle {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1rem;
  transition: all var(--transition);
  background: transparent;
}
.theme-toggle:hover { color:var(--text-primary);border-color:var(--border-accent);background:var(--bg-card); }

/* Language toggle */
.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.lang-btn {
  padding: 0.32rem 0.6rem;
  color: var(--text-muted);
  transition: all var(--transition);
  background: transparent;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border: none;
  line-height: 1;
}
.lang-btn.active { background: var(--accent); color: #fff; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4.5px;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: transparent;
  transition: all var(--transition);
}
.hamburger span {
  display: block; width: 17px; height: 1.5px;
  background: var(--text-secondary); border-radius: 99px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity:0; transform:scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: calc(var(--nav-height));
  left: 0; right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0.85rem;
  flex-direction: column;
  gap: 0.2rem;
  z-index: 998;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { padding: 0.7rem 1rem; font-size: 0.975rem; }

/* ─── 10. HERO ───────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}
.hero-bg { position:absolute;inset:0;z-index:0; }
.dot-grid {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.55;
}
.orb {
  position: absolute; border-radius: 50%;
  filter: blur(88px);
  animation: orb-drift 14s ease-in-out infinite;
  pointer-events: none;
}
.orb-1 { width:500px;height:500px;top:-130px;right:-100px;background:radial-gradient(circle,rgba(56,189,248,0.11) 0%,transparent 70%); }
.orb-2 { width:380px;height:380px;bottom:-40px;left:-90px;background:radial-gradient(circle,rgba(237,184,74,0.09) 0%,transparent 70%);animation-delay:-7s; }

.hero-inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  max-width: 1160px; margin: 0 auto;
  padding: 3rem clamp(1.1rem,4vw,2.5rem);
}

.hero-title { font-size:clamp(2.2rem,5vw,3.3rem);line-height:1.13;letter-spacing:-0.025em;margin-bottom:0.7rem; }

.hero-role {
  display: flex; align-items: center; gap: 0.45rem;
  font-family: var(--font-mono); font-size: 0.95rem; color: var(--accent);
  margin-bottom: 0.45rem;
}
.cursor {
  display: inline-block; width: 2px; height: 1.1em;
  background: var(--accent); animation: blink 1s ease-in-out infinite;
  vertical-align: middle; margin-left: 2px;
}

.hero-subtitle {
  font-family: var(--font-mono); font-size: 0.775rem;
  color: var(--text-muted); letter-spacing: 0.05em; margin-bottom: 1.2rem;
}

.hero-desc {
  font-size: 0.975rem; line-height: 1.78; color: var(--text-secondary);
  max-width: 50ch; margin-bottom: 1.9rem;
}

.hero-ctas { display:flex;flex-wrap:wrap;gap:0.7rem;margin-bottom:1.9rem; }

.social-links { display:flex;flex-wrap:wrap;gap:0.45rem; }
.social-link {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.32rem 0.75rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: var(--font-mono); font-size: 0.73rem; color: var(--text-muted);
  transition: all var(--transition);
}
.social-link:hover { color:var(--accent);border-color:var(--border-accent);background:var(--accent-dim); }

/* Terminal */
.terminal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}
.terminal:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-md), var(--shadow-accent);
  transform: translateY(-3px);
}
.terminal-bar {
  display:flex;align-items:center;gap:0.5rem;
  padding:0.75rem 1.2rem;
  background:var(--bg-secondary);
  border-bottom:1px solid var(--border);
}
.terminal-dots { display:flex;gap:0.38rem; }
.dot { width:10px;height:10px;border-radius:50%; }
.dot-red    { background:#ef4444; }
.dot-yellow { background:#f59e0b; }
.dot-green  { background:#10b981; }
.terminal-title { font-family:var(--font-mono);font-size:0.7rem;color:var(--text-muted);margin-left:0.2rem; }
.terminal-body {
  padding:1.4rem 1.5rem;
  font-family:var(--font-mono);font-size:0.82rem;line-height:1.78;
  color:var(--text-secondary);overflow-x:auto;
}
.terminal-body pre { white-space: pre; }
.t-class { color:#7dd3fc; } .t-def { color:#a78bfa; } .t-str { color:#86efac; }
.t-num { color:#fb923c; }   .t-attr { color:var(--text-secondary); }
.t-key { color:var(--accent); } .t-cmt { color:var(--text-muted);font-style:italic; }

/* ─── 11. STATS BAR ─────────────────────────────────────────────────── */
.stats-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.25rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  max-width: 1160px; margin:0 auto;
  padding: 0 clamp(1.1rem,4vw,2.5rem);
}
.stat-block {
  display:flex;flex-direction:column;align-items:center;text-align:center;
  padding:1.35rem 1rem;position:relative;
}
.stat-block:not(:last-child)::after {
  content:'';position:absolute;right:0;top:22%;height:56%;width:1px;background:var(--border);
}
.stat-icon { font-size:1.4rem;margin-bottom:0.5rem;line-height:1; }
.stat-value {
  font-family:var(--font-display);font-size:clamp(1.65rem,3vw,2.35rem);
  font-weight:800;color:var(--accent);line-height:1;margin-bottom:0.3rem;
}
.stat-label { font-family:var(--font-mono);font-size:0.7rem;color:var(--text-muted);letter-spacing:0.07em;text-transform:uppercase; }

/* ─── 12. PROJECT CARDS ──────────────────────────────────────────────── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  display: flex; flex-direction: column; gap: 0.9rem;
  transition: all var(--transition);
}
.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-accent);
}
.card-top { display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0.4rem; }
.card-category { font-family:var(--font-mono);font-size:0.7rem;color:var(--text-muted);letter-spacing:0.04em; }
.card-title { font-size:1.08rem;font-weight:700;line-height:1.32;margin:0; }
.card-desc { font-size:0.88rem;line-height:1.72;color:var(--text-secondary);margin:0;flex:1; }
.tech-stack { display:flex;flex-wrap:wrap;gap:0.35rem; }
.card-actions {
  display:flex;align-items:center;gap:0.45rem;margin-top:auto;padding-top:0.8rem;
  border-top:1px solid var(--border);flex-wrap:wrap;
}

/* ─── 13. BLOG CARDS ─────────────────────────────────────────────────── */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  display: flex; flex-direction: column; gap: 0.85rem;
  transition: all var(--transition);
}
.blog-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-accent);
}
.series-badge { display:flex;align-items:center;gap:0.45rem;flex-wrap:wrap; }
.series-day {
  display:inline-flex;align-items:center;justify-content:center;
  padding:0.18rem 0.6rem;
  background:var(--gold-dim);border:1px solid rgba(237,184,74,0.24);
  border-radius:var(--radius-sm);
  font-family:var(--font-mono);font-size:0.7rem;font-weight:600;color:var(--gold);letter-spacing:0.04em;
}
.series-name { font-family:var(--font-mono);font-size:0.7rem;color:var(--ramadan);letter-spacing:0.03em; }
.post-meta { display:flex;align-items:center;gap:0.38rem;flex-wrap:wrap;font-size:0.78rem;color:var(--text-muted); }
.meta-sep { opacity:0.4; }
.post-title { font-size:1.08rem;font-weight:700;line-height:1.32;margin:0; }
.post-desc { font-size:0.88rem;line-height:1.72;color:var(--text-secondary);margin:0;flex:1; }
.read-more {
  display:inline-flex;align-items:center;gap:0.28rem;
  font-size:0.865rem;font-weight:500;color:var(--accent);
  transition:gap var(--transition);padding-top:0.7rem;
  border-top:1px solid var(--border);margin-top:auto;
}
.read-more:hover { gap:0.55rem; }

/* ─── 14. CONTACT CARDS ──────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(235px,1fr));
  gap: 1rem;
  max-width: 880px; margin: 0 auto;
}
.contact-card {
  display:flex;align-items:center;gap:1rem;
  padding:1.15rem 1.4rem;
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  text-decoration:none;transition:all var(--transition);
}
.contact-card:hover {
  border-color:var(--border-accent);background:var(--bg-card-hover);
  transform:translateX(4px);box-shadow:var(--shadow-accent);
}
.contact-icon {
  width:42px;height:42px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-dim);border:1px solid var(--border-accent);
  border-radius:var(--radius-md);font-size:1.1rem;flex-shrink:0;
}
.contact-info { flex:1;min-width:0; }
.contact-label { font-size:0.72rem;font-family:var(--font-mono);color:var(--text-muted);letter-spacing:0.05em;text-transform:uppercase;margin-bottom:0.18rem; }
.contact-handle { font-size:0.875rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis; }
.contact-arrow { color:var(--text-muted);font-size:0.88rem;transition:color var(--transition);flex-shrink:0; }
.contact-card:hover .contact-arrow { color:var(--accent); }

/* ─── 15. FOOTER ─────────────────────────────────────────────────────── */
.footer { background:var(--bg-secondary);border-top:1px solid var(--border);padding:3rem 0 1.5rem; }
.footer-inner { max-width:1160px;margin:0 auto;padding:0 clamp(1.1rem,4vw,2.5rem); }
.footer-main { display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;margin-bottom:2rem; }

/* Footer logo — same image as navbar */
.footer-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  margin-bottom: 0.55rem;
}
.footer-logo img { height:32px;width:auto;object-fit:contain; }
[data-theme="light"] .footer-logo img {
  filter: brightness(0) saturate(100%) invert(22%) sepia(90%) saturate(700%) hue-rotate(185deg) brightness(90%);
}
.footer-logo-text {
  font-family:var(--font-display);font-size:1.1rem;font-weight:800;color:var(--text-primary);
  letter-spacing:-0.02em;
}
.footer-logo-text .bracket { color:var(--accent); }

.footer-tagline { font-size:0.835rem;color:var(--text-muted);margin:0; }
.footer-nav { display:flex;gap:0.2rem;flex-wrap:wrap;align-items:flex-start; }
.footer-nav a { padding:0.38rem 0.7rem;font-size:0.87rem;color:var(--text-secondary);border-radius:var(--radius-sm);transition:color var(--transition); }
.footer-nav a:hover { color:var(--text-primary); }
.footer-bottom {
  padding-top:1.4rem;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0.65rem;
}
.footer-copy { font-size:0.78rem;color:var(--text-muted);margin:0; }
.footer-built { font-family:var(--font-mono);font-size:0.7rem;color:var(--text-muted); }

/* ─── 16. BLOG POST — PROSE STYLES ──────────────────────────────────── */
.prose {
  max-width: 70ch; margin: 0 auto;
  font-size: 1.04rem; line-height: 1.84; color: var(--text-secondary);
}
.prose h2 {
  font-family:var(--font-display);font-size:1.55rem;color:var(--text-primary);
  margin:2.6rem 0 0.9rem;padding-bottom:0.55rem;
  border-bottom:1px solid var(--border);line-height:1.28;
}
.prose h3 { font-family:var(--font-display);font-size:1.18rem;color:var(--text-primary);margin:1.9rem 0 0.55rem;line-height:1.32; }
.prose p  { margin:0.95rem 0; }
.prose strong { color:var(--text-primary);font-weight:600; }
.prose em     { font-style:italic; }
.prose blockquote {
  border-left:3px solid var(--accent);padding:0.7rem 1.4rem;margin:1.6rem 0;
  background:var(--accent-dim);border-radius:0 var(--radius-md) var(--radius-md) 0;font-style:italic;
}
.prose blockquote p { margin:0; }
.prose ul  { margin:0.95rem 0;padding-left:1.5rem;list-style:disc; }
.prose ol  { margin:0.95rem 0;padding-left:1.5rem;list-style:decimal; }
.prose li  { margin:0.38rem 0;line-height:1.72; }
.prose pre {
  position:relative;background:var(--bg-secondary);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:1.4rem 1.5rem;overflow-x:auto;margin:1.6rem 0;
}
.prose code {
  font-family:var(--font-mono);font-size:0.875em;
  background:var(--bg-card);border:1px solid var(--border);
  padding:0.14em 0.42em;border-radius:var(--radius-sm);color:var(--accent);white-space:nowrap;
}
.prose pre code {
  background:none;border:none;padding:0;color:var(--text-secondary);
  font-size:0.865rem;white-space:pre;line-height:1.72;
}
.prose hr { border:none;border-top:1px solid var(--border);margin:2.6rem 0; }
.prose a  { color:var(--accent);text-decoration:underline;text-underline-offset:3px; }
.prose a:hover { opacity:0.8; }

/* Copy button for code blocks */
.copy-btn {
  position:absolute;top:0.7rem;right:0.7rem;
  padding:0.28rem 0.65rem;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-sm);font-family:var(--font-mono);
  font-size:0.68rem;color:var(--text-muted);cursor:pointer;
  transition:all var(--transition);
}
.copy-btn:hover { color:var(--accent);border-color:var(--border-accent); }

/* Post header */
.post-header {
  background:var(--bg-secondary);border-bottom:1px solid var(--border);
  padding:3rem 0 2.4rem;
}
.post-header .container { max-width:900px; }

.back-link {
  display:inline-flex;align-items:center;gap:0.38rem;
  font-size:0.85rem;color:var(--text-muted);
  transition:color var(--transition);margin-bottom:1.4rem;
  font-family:var(--font-mono);
}
.back-link:hover { color:var(--accent); }

.post-series { display:flex;align-items:center;gap:0.7rem;margin-bottom:0.9rem;flex-wrap:wrap; }
.post-header h1 { font-size:clamp(1.6rem,3.8vw,2.35rem);line-height:1.18;margin-bottom:0.9rem; }
.post-lead { font-size:1.08rem;line-height:1.78;color:var(--text-secondary);max-width:66ch; }

.post-content { padding:3.5rem 0; }
.post-content .container { max-width:900px; }

.post-footer-nav {
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;
  gap:0.9rem;padding-top:2.75rem;border-top:1px solid var(--border);margin-top:2.75rem;
}

/* ─── 17. PAGE HEROES ───────────────────────────────────────────────── */
.page-hero {
  position:relative;
  padding:calc(var(--nav-height) + 3.25rem) 0 3.25rem;
  overflow:hidden;
}
.page-hero .dot-grid { opacity:0.38; }
.page-hero-inner {
  position:relative;z-index:1;
  max-width:1160px;margin:0 auto;
  padding:0 clamp(1.1rem,4vw,2.5rem);
}
.page-hero h1 { margin-bottom:0.45rem; }
.page-hero-desc { font-size:1.03rem;color:var(--text-secondary);max-width:52ch;margin-top:0.45rem; }
.blog-stars { font-size:1.25rem;color:var(--gold);margin-top:0.7rem;display:flex;align-items:center;gap:0.45rem; }
.blog-star { animation:stars-twinkle 2.5s ease infinite; }
.blog-star:nth-child(2) { animation-delay:.8s;font-size:0.95rem; }
.blog-star:nth-child(3) { animation-delay:1.6s; }

/* ─── 18. FILTER TABS ───────────────────────────────────────────────── */
.filter-tabs { display:flex;gap:0.38rem;flex-wrap:wrap;margin-bottom:2rem; }
.filter-tab {
  padding:0.42rem 1rem;border-radius:999px;
  font-size:0.86rem;font-family:var(--font-body);font-weight:500;
  color:var(--text-secondary);border:1px solid var(--border);
  background:transparent;cursor:pointer;transition:all var(--transition);
}
.filter-tab:hover { color:var(--text-primary);border-color:rgba(255,255,255,0.13);background:var(--bg-card); }
.filter-tab.active { color:var(--accent);border-color:var(--border-accent);background:var(--accent-dim); }

/* ─── 19. RAMADAN SERIES CALLOUT ────────────────────────────────────── */
.ramadan-callout {
  background:linear-gradient(135deg,#181000 0%,#211700 50%,#181000 100%);
  border:1px solid rgba(201,151,58,0.20);
  border-radius:var(--radius-lg);
  padding:1.4rem 1.9rem;
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  margin-bottom:2rem;flex-wrap:wrap;
}
.ramadan-callout-left { display:flex;align-items:center;gap:0.9rem;flex:1; }
.callout-moon { font-size:1.9rem;animation:crescent-glow 3s ease infinite;flex-shrink:0;line-height:1; }
.callout-title { font-family:var(--font-display);font-size:1.02rem;font-weight:700;color:var(--ramadan-moon);margin-bottom:0.18rem; }
.callout-subtitle { font-size:0.83rem;color:var(--ramadan);margin:0; }
.callout-progress { min-width:155px;flex-shrink:0; }
.progress-label { font-family:var(--font-mono);font-size:0.72rem;color:var(--ramadan);margin-bottom:0.38rem;display:flex;justify-content:space-between; }
.progress-bar { height:5px;background:rgba(201,151,58,0.10);border-radius:99px;overflow:hidden;border:1px solid rgba(201,151,58,0.14); }
.progress-fill { height:100%;background:linear-gradient(90deg,var(--ramadan),var(--ramadan-moon));border-radius:99px;transition:width 0.5s ease; }

[data-theme="light"] .ramadan-callout {
  background: linear-gradient(135deg, #fdf6e3 0%, #fef3cd 50%, #fdf6e3 100%);
  border-color: rgba(201, 151, 58, 0.35);
}
[data-theme="light"] .callout-title  { color: #7a5c10; }
[data-theme="light"] .callout-subtitle { color: #a07828; }
[data-theme="light"] .progress-label { color: #a07828; }

/* ─── 20. 404 PAGE ──────────────────────────────────────────────────── */
.page-404 { min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:2rem; }
.error-num {
  font-family:var(--font-display);font-size:clamp(6rem,18vw,11rem);font-weight:800;
  color:var(--accent);opacity:0.11;line-height:1;display:block;pointer-events:none;user-select:none;
}
.error-code { font-family:var(--font-mono);font-size:0.83rem;color:var(--text-muted);letter-spacing:0.1em;margin-bottom:0.7rem;display:block; }
.error-title { font-size:clamp(1.4rem,2.8vw,1.9rem);margin-bottom:0.45rem; }
.error-desc { font-size:0.975rem;color:var(--text-secondary);margin-bottom:2rem; }

/* ─── 21. SCROLLBAR ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width:5px;height:5px; }
::-webkit-scrollbar-track { background:var(--bg-secondary); }
::-webkit-scrollbar-thumb { background:var(--border-accent);border-radius:99px; }
::-webkit-scrollbar-thumb:hover { background:var(--accent); }

/* ─── 22. SELECTION ─────────────────────────────────────────────────── */
::selection { background:var(--accent-dim);color:var(--accent); }

/* ─── 23. UTILITIES ─────────────────────────────────────────────────── */
.hidden { display:none !important; }

/* ─── 24. RESPONSIVE ────────────────────────────────────────────────── */

/* 1024px — tablet landscape */
@media (max-width:1024px) {
  .hero-inner { grid-template-columns:1fr;gap:2.5rem; }
  .hero-desc { max-width:100%; }
  .terminal { max-width:560px; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .stat-block:nth-child(2)::after { display:none; }
  .stat-block:nth-child(1),
  .stat-block:nth-child(2) { border-bottom:1px solid var(--border); }
}

/* 768px — tablet portrait */
@media (max-width:768px) {
  :root { --nav-height:58px; }
  .nav-links { display:none; }
  .hamburger { display:flex; }
  .ramadan-stars { display:none; }
  .footer-main { flex-direction:column;gap:1.4rem; }
  .post-header { padding:2rem 0 1.4rem; }
  .ramadan-callout { flex-direction:column; }
  .callout-progress { width:100%; }
  .prose { font-size:0.975rem; }
  .prose h2 { font-size:1.3rem; }
}

/* 640px — mobile */
@media (max-width:640px) {
  .hero-ctas { flex-direction:column;align-items:flex-start; }
  .hero-ctas .btn { width:100%;max-width:272px; }
  .grid-auto { grid-template-columns:1fr; }
  .contact-grid { grid-template-columns:1fr; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .filter-tabs { gap:0.28rem; }
  .footer-bottom { flex-direction:column;text-align:center;gap:0.45rem; }
  .post-footer-nav { flex-direction:column;align-items:flex-start; }
  .ramadan-content p { font-size:0.76rem; }
  .ramadan-banner { padding:0.55rem 2.5rem; }
}
/* ═══════════════════════════════════════════════════════════════════
   PATCH v3 — All new styles for the portfolio update
   ═══════════════════════════════════════════════════════════════════ */

/* ─── FIX 1: Banner + Navbar layout ─────────────────────────────────
   Banner is above the page; navbar is fixed below it.
   We use a CSS var to track the banner height for offsetting. */

:root {
  --banner-height: 0px;    /* updated by JS when banner is shown */
}

/* The banner is now sticky so it scrolls up naturally */
.announcement-banner {
  position: sticky;
  top: 0;
  z-index: 1000;           /* above navbar (999) */
  width: 100%;
}

/* Navbar shifts down when banner is present */
.navbar {
  top: var(--banner-height);
}

/* Push hero content below both banner + navbar */
body.has-banner .hero,
body.has-banner .page-hero {
  padding-top: calc(var(--nav-height) + 1.5rem);
}

/* ─── FIX 2: Ramadan/Seasonal banner base styles ────────────────── */
/* Keep existing .ramadan-banner styles, just fix z-index */
.ramadan-banner {
  z-index: 1000 !important;
}

/* ─── EID BANNER (active Mar 20–25) ─────────────────────────────── */
.eid-banner {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, #0a0018 0%, #160030 50%, #0a0018 100%);
  border-bottom: 1px solid rgba(180, 100, 255, 0.25);
  padding: 0.6rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  overflow: hidden;
}
.eid-banner::before {
  content:'';
  position:absolute;inset:0;
  background: repeating-linear-gradient(90deg,transparent,transparent 58px,rgba(180,100,255,0.035) 58px,rgba(180,100,255,0.035) 59px);
}
.eid-content { display:flex;align-items:center;gap:0.7rem;z-index:1; }
.eid-content p { font-size:0.86rem;color:#d4a8ff;margin:0;line-height:1;font-weight:500; }
.eid-close {
  position:absolute;right:1rem;top:50%;transform:translateY(-50%);
  width:24px;height:24px;display:flex;align-items:center;justify-content:center;
  color:#a060e0;font-size:1.1rem;border-radius:var(--radius-sm);
  transition:all var(--transition);cursor:pointer;z-index:2;
}
.eid-close:hover { color:#d4a8ff;background:rgba(180,100,255,0.10); }

/* ─── FIX 3: Terminal title ──────────────────────────────────────── */
/* (Changed in HTML directly) */

/* ─── FIX 4: String color in light theme ────────────────────────── */
/* Light mode terminal — all token colors overridden for readability */
[data-theme="light"] .t-str   { color: #16803e !important; }  /* dark green */
[data-theme="light"] .t-class { color: #1d6fa8 !important; }  /* steel blue */
[data-theme="light"] .t-def   { color: #6d28d9 !important; }  /* purple */
[data-theme="light"] .t-num   { color: #c2410c !important; }  /* burnt orange */
[data-theme="light"] .t-cmt   { color: #78909c !important; font-style: italic; }
[data-theme="light"] .t-key   { color: var(--accent)  !important; }
[data-theme="light"] .t-attr  { color: #374151 !important; }
[data-theme="light"] .terminal {
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
}
[data-theme="light"] .terminal-bar {
  background: #edf2f9 !important;
  border-bottom: 1px solid #e2e8f0 !important;
}
[data-theme="light"] .terminal-body {
  background: #f8fafc !important;
  color: #374151 !important;
}

/* ─── FIX 5: Contact icons (img support) ─────────────────────────── */
.contact-icon img {
  width: 22px;
  height: 22px;
  object-fit: contain;
  display: block;
}
/* In light mode, keep icons natural — no inversion needed for colored PNGs */
[data-theme="light"] .contact-icon {
  background: var(--accent-dim);
}

/* ─── FIX 6: Nav logo slightly bigger ───────────────────────────── */
.nav-logo img {
  height: 44px !important;   /* was 36px */
}

/* ─── FEATURE: Back to top button ────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: 50%;
  color: var(--accent);
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.25s, transform 0.25s, background 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--accent-dim);
  box-shadow: var(--shadow-accent);
}

/* ─── BLOG READING PROGRESS BAR ──────────────────────────────────── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--gold, #edb84a));
  width: 0%;
  z-index: 2000;
  transition: width 0.1s linear;
}

/* ─── BLOG POST PAGE — full redesign integrating with site theme ── */

/* Blog post wrapper — full page layout */
.blog-post-page {
  min-height: 100vh;
  background: var(--bg-primary);
}

/* Post Hero */
.post-hero {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border);
  padding: calc(var(--nav-height) + 3.5rem) 0 3rem;
  position: relative;
  overflow: hidden;
}
.post-hero .dot-grid {
  position: absolute; inset: 0; opacity: 0.18; pointer-events: none;
}
.post-hero-inner {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 clamp(1.1rem, 4vw, 2.5rem);
  position: relative;
  z-index: 1;
}
.post-series-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.28rem 0.8rem;
  background: var(--gold-dim, rgba(237,184,74,0.1));
  border: 1px solid rgba(237,184,74,0.24);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold, #edb84a);
  letter-spacing: 0.06em;
  margin-bottom: 1.1rem;
}
.post-hero-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
  font-family: var(--font-mono);
}
.post-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.18;
  margin-bottom: 1rem;
}
.post-hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 62ch;
  margin-bottom: 1.8rem;
}
.post-hero-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

/* Post Article Body */
.post-article {
  max-width: 780px;
  margin: 0 auto;
  padding: 3rem clamp(1.1rem, 4vw, 2.5rem) 5rem;
}

/* Rich prose styles */
.prose {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.82;
}
.prose h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.55rem);
  margin: 2.8rem 0 0.9rem;
  padding-top: 2.2rem;
  border-top: 1px solid var(--border);
  color: var(--text-primary);
}
.prose h3 {
  font-size: 1.12rem;
  margin: 1.8rem 0 0.6rem;
  color: var(--text-primary);
}
.prose p { margin-bottom: 1.25rem; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text-primary); font-weight: 600; }
.prose em { color: var(--accent); font-style: italic; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--text-primary); }
.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.prose li { color: var(--text-secondary); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.87em;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.12em 0.42em;
  color: var(--accent);
}
.prose pre {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.3rem 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  position: relative;
}
.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--text-secondary);
}
.prose blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.8rem 0;
  padding: 1rem 1.5rem;
  background: var(--accent-dim);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.prose blockquote p { color: var(--text-primary); margin: 0; font-style: italic; }

/* Prose callout boxes */
.prose-callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
}
.prose-callout.accent {
  background: var(--accent-dim);
  border-color: var(--border-accent);
}
.prose-callout.gold {
  background: var(--gold-dim, rgba(237,184,74,0.08));
  border-color: rgba(237,184,74,0.22);
}
.prose-callout-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  display: block;
}

/* KV Grid (key-value info boxes) */
.prose-kv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1.2rem 0;
}
@media (max-width: 560px) { .prose-kv-grid { grid-template-columns: 1fr; } }
.prose-kv {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
}
.prose-kv-key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}
.prose-kv-val {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
}

/* Step list */
.prose-steps {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.2rem 0;
}
.prose-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.prose-step-num {
  min-width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.prose-step-text {
  font-size: 0.97rem;
  color: var(--text-secondary);
  line-height: 1.72;
  padding-top: 0.18rem;
}

/* Copy link button */
.copy-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.42rem 0.95rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.84rem;
  font-weight: 500;
  background: transparent;
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.copy-link-btn:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.14); background: var(--bg-card); }
.copy-link-btn.copied { color: var(--success, #34d399); border-color: var(--success-dim, rgba(52,211,153,0.2)); }

/* Post footer nav */
.post-footer-nav {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 clamp(1.1rem,4vw,2.5rem) 4rem;
  display: flex;
  align-items: stretch;
  gap: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
}
.post-nav-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.3rem;
  text-decoration: none;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.post-nav-card:hover { border-color: var(--border-accent); background: var(--bg-card-hover); transform: translateY(-2px); }
.post-nav-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.08em; text-transform: uppercase; }
.post-nav-title { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); line-height: 1.35; }
.post-nav-card.next { text-align: right; }

/* ─── BLOG CATEGORIES PAGE ───────────────────────────────────────── */
.category-section {
  margin-bottom: 3.5rem;
}
.category-section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border);
}
.category-section-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.category-section-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.category-section-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  margin-left: auto;
}
.category-post-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.category-post-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition);
}
.category-post-row:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}
.category-post-day {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gold, #edb84a);
  background: var(--gold-dim, rgba(237,184,74,0.09));
  border: 1px solid rgba(237,184,74,0.2);
  border-radius: var(--radius-sm);
  padding: 0.18rem 0.55rem;
  white-space: nowrap;
  flex-shrink: 0;
}
.category-post-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.category-post-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}
.category-post-arrow {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: color var(--transition);
  flex-shrink: 0;
}
.category-post-row:hover .category-post-arrow { color: var(--accent); }

/* Empty state */
.category-empty {
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
}

/* ─── RESPONSIVE ADJUSTMENTS FOR NEW FEATURES ───────────────────── */
@media (max-width: 768px) {
  .post-hero-actions { gap: 0.5rem; }
  .post-footer-nav { flex-direction: column; }
  .category-post-meta { display: none; }
  .back-to-top { bottom: 1.25rem; right: 1.25rem; }
}
@media (max-width: 640px) {
  .prose-kv-grid { grid-template-columns: 1fr; }
  .post-series-badge { font-size: 0.68rem; }
}

/* ═══════════════════════════════════════════════════════════════════
   PROJECT SLIDER — Homepage featured projects carousel
   ═══════════════════════════════════════════════════════════════════ */

.proj-slider {
  position: relative;
  overflow: hidden;
}

.proj-slider-track {
  display: flex;
  gap: 1.35rem;
  transition: transform 0.42s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

/* Each slide is sized to show 3 on desktop, 2 on tablet, 1 on mobile */
.proj-slide {
  /* width calculated by JS — flex-shrink:0 prevents squishing */
  flex-shrink: 0;
}

/* Controls row */
.proj-slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.75rem;
}

.proj-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.4rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.proj-arrow:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--border-accent);
  color: var(--accent);
  box-shadow: var(--shadow-accent);
}
.proj-arrow:disabled {
  opacity: 0.28;
  cursor: default;
}

/* Dot indicators */
.proj-dots {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}
.proj-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.22s ease;
}
.proj-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.25);
}
.proj-dot:hover:not(.active) {
  background: var(--text-muted);
}

/* Responsive slide widths */
@media (max-width: 1024px) {
  /* 2 visible on tablet — handled by JS via --slides-visible CSS var */
}
@media (max-width: 640px) {
  .proj-arrow { width: 34px; height: 34px; font-size: 1.15rem; }
}
/* ═══════════════════════════════════════════════════════════════════════
   BLOG SLIDER (matches project slider structure)
   ═══════════════════════════════════════════════════════════════════════ */

.blog-slider {
  position: relative;
  overflow: hidden;
}

.blog-slider-track {
  display: flex;
  gap: 1.35rem;
  transition: transform 0.42s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.blog-slide {
  flex-shrink: 0;
}

.blog-slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.75rem;
}

.blog-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.4rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.blog-arrow:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--border-accent);
  color: var(--accent);
  box-shadow: var(--shadow-accent);
}
.blog-arrow:disabled {
  opacity: 0.28;
  cursor: default;
}

.blog-dots {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}
.blog-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.22s ease;
}
.blog-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.25);
}
.blog-dot:hover:not(.active) {
  background: var(--text-muted);
}

@media (max-width: 640px) {
  .blog-arrow { width: 34px; height: 34px; font-size: 1.15rem; }
}

/* ═══════════════════════════════════════════════════════════════════════
   GLOBAL FEEDBACK SYSTEM
   ═══════════════════════════════════════════════════════════════════════ */

/* Floating trigger button (bottom-left FAB) */
.feedback-trigger {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 999;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feedback-trigger.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.feedback-trigger:hover {
  filter: brightness(1.12);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 20px rgba(56, 189, 248, 0.3);
}

.feedback-trigger::before {
  content: '💬';
  font-size: 1rem;
  line-height: 1;
}

.feedback-trigger-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  writing-mode: horizontal-tb;
  transform: none;
}

/* Overlay backdrop */
.feedback-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 18, 0.75);
  backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.feedback-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Sliding panel */
.feedback-panel {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(440px, 92vw);
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  z-index: 9999;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.feedback-panel.open {
  transform: translateX(0);
}

/* Panel header */
.feedback-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.7rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.feedback-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-display);
  margin: 0;
  color: var(--text-primary);
}

.feedback-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
}

.feedback-close:hover {
  background: var(--error-dim);
  border-color: var(--error);
  color: var(--error);
}

/* Form container */
.feedback-form {
  flex: 1;
  overflow-y: auto;
  padding: 1.7rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feedback-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.feedback-field label {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.feedback-field .required {
  color: var(--error);
}

.feedback-field input,
.feedback-field select,
.feedback-field textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: all var(--transition);
}

.feedback-field input:focus,
.feedback-field select:focus,
.feedback-field textarea:focus {
  outline: none;
  border-color: var(--border-accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.feedback-field input[readonly] {
  background: var(--bg-primary);
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.7;
}

.feedback-field textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.char-count {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-align: right;
  margin-top: -0.3rem;
}

.feedback-submit {
  margin-top: 0.5rem;
  width: 100%;
  padding: 0.9rem;
  font-weight: 600;
}

.feedback-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Status messages */
.feedback-status {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  display: none;
  margin-top: 0.5rem;
}

.feedback-status.success {
  background: var(--success-dim);
  border: 1px solid var(--success);
  color: var(--success);
  display: block;
}

.feedback-status.error {
  background: var(--error-dim);
  border: 1px solid var(--error);
  color: var(--error);
  display: block;
}

/* Responsive */
@media (max-width: 640px) {
  .feedback-panel {
    width: 100vw;
  }
  
  .feedback-form {
    padding: 1.3rem;
  }
  
  .feedback-header {
    padding: 1.2rem 1.3rem;
  }
}
/* ═══════════════════════════════════════════════════════════════════════
   BLOG POST — SHARED COMPONENTS  (Day 2 +)
   Additive only — no existing rules modified.
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Post-hero light-mode warm paper feel (shared all blog posts) ───── */
[data-theme="light"] .post-hero { background:linear-gradient(180deg,#f0ebe0 0%,#f5f3ed 100%); border-bottom:1px solid #ddd5c4; }
[data-theme="light"] .post-hero h1 { font-family:'Playfair Display',serif; color:#0f0e0c; }
[data-theme="light"] .post-hero-lead { color:#5a5248; }
[data-theme="light"] .post-article { background:#f7f3ec; }
[data-theme="light"] .prose { color:#2e2b25; }
[data-theme="light"] .prose h2 { font-family:'Playfair Display',serif; color:#0f0e0c; border-top-color:#ddd5c4; }
[data-theme="light"] .prose h3 { font-family:'Playfair Display',serif; color:#0f0e0c; }
[data-theme="light"] .prose strong { color:#0f0e0c; }
[data-theme="light"] .prose blockquote { background:#ede8dc; border-left-color:#c8a94b; border-radius:0 var(--radius-md) var(--radius-md) 0; }
[data-theme="light"] .prose blockquote p { font-family:'Playfair Display',serif; font-style:italic; color:#0f0e0c; }
[data-theme="light"] .prose-callout { background:#ede8dc; border-color:#c0b89c; }
[data-theme="light"] .prose-callout.accent { background:#d4eaeb; border-color:#9fcccf; }
[data-theme="light"] .prose-callout.gold { background:#f0ebe0; border-color:#c8a94b; }
[data-theme="light"] .prose-kv { background:#f0ebe0; border-color:#ddd5c4; }
[data-theme="light"] .prose-kv-val { color:#0f0e0c; }
[data-theme="light"] .prose-step-num { background:#0f0e0c; border-color:#c8a94b; color:#c8a94b; }
[data-theme="light"] .prose-step-text { color:#2e2b25; }
[data-theme="light"] .prose code { background:#ede8dc; border-color:#c0b89c; color:#2a6b6e; }
[data-theme="light"] .prose pre { background:#1b1a17; border-color:#2e2b24; }
[data-theme="light"] .prose pre code { background:none; border:none; color:#d4cfc6; }
[data-theme="light"] .post-series-badge { background:rgba(200,169,75,0.12); border-color:rgba(200,169,75,0.35); color:#7a5c10; }
[data-theme="light"] .reading-progress { background:linear-gradient(90deg,#c8a94b,#2a6b6e); }
[data-theme="light"] .tag { background:#ede8dc; border-color:#c0b89c; color:#5a5248; }
[data-theme="light"] .post-hero-actions .btn-ghost { border-color:#c0b89c; color:#5a5248; }
[data-theme="light"] .post-hero-actions .btn-ghost:hover { background:#ede8dc; color:#0f0e0c; }
[data-theme="light"] .copy-link-btn { border-color:#c0b89c; color:#5a5248; }
[data-theme="light"] .copy-link-btn:hover { background:#ede8dc; color:#0f0e0c; }
[data-theme="light"] .post-nav-label { color:#7a7062; }
[data-theme="light"] .post-nav-title { color:#0f0e0c; }
[data-theme="light"] .post-nav-card { background:#f0ebe0; border-color:#ddd5c4; }
[data-theme="light"] .post-nav-card:hover { background:#ede8dc; border-color:#c8a94b; }
[data-theme="light"] .post-footer-nav { border-top-color:#ddd5c4; background:#f7f3ec; }
[data-theme="light"] .category-pill { background:rgba(42,107,110,0.1); border-color:rgba(42,107,110,0.3); color:#1a4547; }
[data-theme="light"] .prose-callout-label { color:#7a7062; }
[data-theme="light"] .footer { background:#ede8dc; border-top-color:#ddd5c4; }
[data-theme="light"] .footer-nav a,
[data-theme="light"] .footer-tagline,
[data-theme="light"] .footer-copy,
[data-theme="light"] .footer-built { color:#5a5248; }
[data-theme="light"] .social-link { border-color:#c0b89c; color:#5a5248; }
[data-theme="light"] .social-link:hover { color:#2a6b6e; border-color:#2a6b6e; background:rgba(42,107,110,0.08); }

/* ─── Pipeline / Stage Flow Diagram ─────────────────────────────────── */
.pipeline-diagram { display:flex; flex-direction:column; gap:0; margin:2rem 0 2.5rem; }
.pipeline-row { display:flex; }
.pipeline-node {
  display:flex; align-items:center; gap:1rem;
  padding:0.9rem 1.25rem; flex:1;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:0;
  transition:background var(--transition);
}
.pipeline-row:first-child .pipeline-node { border-radius:var(--radius-md) var(--radius-md) 0 0; }
.pipeline-row:last-child  .pipeline-node { border-radius:0 0 var(--radius-md) var(--radius-md); }
.pipeline-node:hover { background:var(--bg-card-hover); }
.pipeline-node-num {
  font-family:var(--font-mono); font-size:0.72rem; font-weight:500;
  color:var(--gold,#edb84a);
  background:var(--gold-dim,rgba(237,184,74,0.09));
  border:1px solid rgba(237,184,74,0.22);
  border-radius:var(--radius-sm);
  width:28px; height:28px;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.pipeline-node-label { font-weight:600; font-size:0.9rem; color:var(--text-primary); flex:1; }
.pipeline-node-analogy { font-size:0.78rem; color:var(--text-muted); font-style:italic; }
.pipeline-connector {
  width:2px; height:12px; margin:0 auto;
  background:linear-gradient(180deg,var(--gold-dim,rgba(237,184,74,0.3)),var(--accent-dim));
  position:relative;
}
.pipeline-connector::after {
  content:'';
  position:absolute; bottom:-4px; left:50%; transform:translateX(-50%);
  width:0; height:0;
  border-left:5px solid transparent;
  border-right:5px solid transparent;
  border-top:6px solid var(--border-accent);
}
[data-theme="light"] .pipeline-node { background:#f0ebe0; border-color:#ddd5c4; }
[data-theme="light"] .pipeline-node:hover { background:#ede8dc; }
[data-theme="light"] .pipeline-node-label { color:#0f0e0c; }
[data-theme="light"] .pipeline-node-analogy { color:#7a7062; }
[data-theme="light"] .pipeline-node-num { background:rgba(200,169,75,0.15); border-color:rgba(200,169,75,0.3); color:#7a5c10; }

/* ─── Time / Effort Badge ────────────────────────────────────────────── */
.time-badge {
  display:inline-flex; align-items:center;
  font-family:var(--font-mono); font-size:0.68rem;
  padding:0.18rem 0.5rem;
  background:var(--accent-dim);
  border:1px solid var(--border-accent);
  border-radius:var(--radius-sm);
  color:var(--accent);
  margin-left:0.5rem; vertical-align:middle;
}
[data-theme="light"] .time-badge { color:#0369a1; background:rgba(3,105,161,0.08); border-color:rgba(3,105,161,0.22); }

/* ─── Step Pitfall Note ──────────────────────────────────────────────── */
/* Calm amber — informative, not alarming */
.step-pitfall {
  margin-top:0.65rem;
  padding:0.55rem 0.85rem;
  background:var(--gold-dim,rgba(237,184,74,0.06));
  border-left:3px solid rgba(237,184,74,0.4);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:0.82rem;
  color:var(--text-muted);
  line-height:1.55;
}
[data-theme="light"] .step-pitfall { background:rgba(200,169,75,0.08); color:#5a5248; border-left-color:#c8a94b; }

/* ─── Metrics / Comparison Table ─────────────────────────────────────── */
.metrics-table { width:100%; border-collapse:collapse; margin:0.75rem 0; font-size:0.875rem; }
.metrics-table th {
  text-align:left; padding:0.5rem 0.85rem;
  font-family:var(--font-mono); font-size:0.73rem; font-weight:500;
  color:var(--gold,#edb84a);
  background:var(--gold-dim,rgba(237,184,74,0.06));
  border-bottom:1px solid var(--border);
}
.metrics-table td {
  padding:0.55rem 0.85rem;
  border-bottom:1px solid var(--border);
  color:var(--text-secondary);
  vertical-align:top; line-height:1.5;
}
.metrics-table tr:last-child td { border-bottom:none; }
.metrics-table td:first-child {
  font-family:var(--font-mono); font-size:0.8rem;
  color:var(--accent); font-weight:500; white-space:nowrap;
}
[data-theme="light"] .metrics-table th { background:rgba(200,169,75,0.08); border-bottom-color:#ddd5c4; color:#7a5c10; }
[data-theme="light"] .metrics-table td { border-bottom-color:#ddd5c4; color:#2e2b25; }
[data-theme="light"] .metrics-table td:first-child { color:#1a4547; }

/* ─── Knowledge Check / Interactive Quiz ─────────────────────────────── */
.knowledge-check { margin:2.5rem 0; border:1px solid var(--border); border-radius:var(--radius-md); overflow:hidden; }
.knowledge-check-header {
  padding:0.9rem 1.25rem;
  background:var(--accent-dim);
  border-bottom:1px solid var(--border);
  font-weight:600; font-size:0.92rem; color:var(--text-primary);
}
.knowledge-check-body { padding:1.25rem 1.5rem; display:flex; flex-direction:column; gap:1.5rem; }
.quiz-question { font-weight:500; font-size:0.9rem; color:var(--text-primary); margin-bottom:0.55rem; line-height:1.5; }
.quiz-reveal-btn {
  background:none;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:0.38rem 0.9rem; font-size:0.8rem;
  color:var(--gold,#edb84a);
  cursor:pointer; font-family:var(--font-body);
  transition:background var(--transition), border-color var(--transition);
}
.quiz-reveal-btn:hover { background:var(--gold-dim,rgba(237,184,74,0.07)); border-color:rgba(237,184,74,0.4); }
.quiz-answer {
  display:none; margin-top:0.75rem; padding:0.85rem 1rem;
  background:var(--accent-dim);
  border-left:3px solid var(--border-accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:0.875rem; color:var(--text-secondary);
  line-height:1.6;
  animation:quiz-reveal 0.2s ease;
}
.quiz-answer.visible { display:block; }
@keyframes quiz-reveal { from{opacity:0;transform:translateY(-4px)} to{opacity:1;transform:translateY(0)} }
[data-theme="light"] .knowledge-check { border-color:#ddd5c4; }
[data-theme="light"] .knowledge-check-header { background:rgba(42,107,110,0.06); border-bottom-color:#ddd5c4; color:#0f0e0c; }
[data-theme="light"] .quiz-question { color:#2e2b25; }
[data-theme="light"] .quiz-reveal-btn { border-color:#ddd5c4; color:#7a5c10; }
[data-theme="light"] .quiz-answer { background:rgba(42,107,110,0.06); border-left-color:rgba(42,107,110,0.4); color:#2e2b25; }

/* ─── Quick Recap Box ────────────────────────────────────────────────── */
.quick-recap { margin:2.5rem 0; border:1px solid rgba(237,184,74,0.25); border-radius:var(--radius-md); overflow:hidden; }
.quick-recap-header {
  background:var(--gold-dim,rgba(237,184,74,0.07));
  border-bottom:1px solid rgba(237,184,74,0.18);
  padding:0.85rem 1.25rem;
  font-weight:600; font-size:0.85rem;
  color:var(--gold,#edb84a);
  letter-spacing:0.05em; text-transform:uppercase;
}
.quick-recap ol { margin:0; padding:1.25rem 1.25rem 1.25rem 2.5rem; display:flex; flex-direction:column; gap:0.55rem; }
.quick-recap li { font-size:0.875rem; color:var(--text-secondary); line-height:1.5; }
.quick-recap li strong { color:var(--gold,#edb84a); }
[data-theme="light"] .quick-recap { border-color:rgba(200,169,75,0.3); }
[data-theme="light"] .quick-recap-header { color:#7a5c10; background:rgba(200,169,75,0.08); border-bottom-color:rgba(200,169,75,0.2); }
[data-theme="light"] .quick-recap li { color:#2e2b25; }
[data-theme="light"] .quick-recap li strong { color:#7a5c10; }

/* ─── Code Sample Output Block ───────────────────────────────────────── */
.code-output {
  margin-top:0.5rem; padding:1rem 1.25rem;
  background:#0d1117; border:1px solid #252525;
  border-radius:var(--radius-md);
  font-family:var(--font-mono); font-size:0.77rem;
  color:#8bc4a8; white-space:pre; overflow-x:auto; line-height:1.65;
}
.code-output-label {
  font-size:0.68rem; color:#555; margin-bottom:0.6rem;
  letter-spacing:0.08em; text-transform:uppercase;
}

/* ─── New Term Underline ─────────────────────────────────────────────── */
/* Subtle amber underline signals a defined term without alarming color */
.term {
  text-decoration:underline;
  text-decoration-color:rgba(237,184,74,0.45);
  text-underline-offset:3px;
  text-decoration-thickness:1px;
  font-style:italic;
}
[data-theme="light"] .term { text-decoration-color:rgba(150,120,50,0.45); }

/* ─── Learning Rate Visual Grid (Day 3) ──────────────────────────────── */
/* Reuses .prose-kv-grid + .prose-kv from existing CSS — no new rules needed */

/* ─── Optimizer Comparison Cards (Day 3) ─────────────────────────────── */
.optimizer-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:0.75rem;
  margin:1.2rem 0;
}
.optimizer-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:1rem 1.1rem;
}
.optimizer-card-name {
  font-family:var(--font-mono); font-size:0.78rem; font-weight:600;
  color:var(--accent); margin-bottom:0.35rem;
}
.optimizer-card-tag {
  display:inline-block; font-size:0.65rem; font-family:var(--font-mono);
  padding:0.1rem 0.4rem;
  background:var(--gold-dim,rgba(237,184,74,0.09));
  border:1px solid rgba(237,184,74,0.2);
  border-radius:var(--radius-sm);
  color:var(--gold,#edb84a);
  margin-bottom:0.5rem;
}
.optimizer-card-desc { font-size:0.82rem; color:var(--text-muted); line-height:1.5; }
[data-theme="light"] .optimizer-card { background:#f0ebe0; border-color:#ddd5c4; }
[data-theme="light"] .optimizer-card-desc { color:#5a5248; }

/* ─── Loss Curve Illustration (Day 3, pure CSS/SVG fallback) ─────────── */
/* Used as a wrapper for any inline SVG loss curve diagrams */
.loss-curve-wrap {
  margin:1.5rem 0;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:1.25rem 1.5rem;
  text-align:center;
}
.loss-curve-wrap figcaption {
  font-family:var(--font-mono); font-size:0.72rem;
  color:var(--text-muted); margin-top:0.65rem; letter-spacing:0.04em;
}

/* ═══ NEW SECTIONS: EXPERIENCE, EDUCATION, SKILLS ═════════════════════ */

.timeline {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  padding-left: 44px;
  padding-bottom: 2.5rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 4px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent-dim);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.timeline-company {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.65rem;
}
.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}
.timeline-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.timeline-highlights .tag {
  font-size: 0.7rem;
}

/* Education Grid */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.35rem;
}
.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  gap: 1.1rem;
  transition: all var(--transition);
}
.edu-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.edu-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: var(--radius-md);
}
.edu-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.edu-school {
  display: block;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.15rem;
}
.edu-period {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
}
.edu-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.edu-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

/* Skills Section */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.4rem;
}
.skill-category h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.85rem;
  font-family: var(--font-display);
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.skill-tag {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.skill-tag:hover {
  border-color: var(--border-accent);
  color: var(--accent);
}
.leetcode-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.leetcode-icon {
  color: var(--accent);
  font-size: 1.1rem;
}
.leetcode-divider {
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .timeline { padding-left: 0; }
  .timeline::before { left: 8px; }
  .timeline-item { padding-left: 36px; }
  .timeline-dot { left: 0; width: 16px; height: 16px; }
  .edu-grid { grid-template-columns: 1fr; }
  .skills-container { grid-template-columns: 1fr; }
}