/* ═══════════════════════════════════════════════════════════════════
   Rishikesh Pote – Portfolio  |  style.css
   Light gray theme · Electric cyan accents · Space Grotesk + IBM Plex Mono
   ═══════════════════════════════════════════════════════════════════ */

/* ─── RESET & VARIABLES ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #e4eaf4;
  --bg-alt:      #d8e0ee;
  --surface:     #eaf0fb;
  --card:        #f2f5fc;
  --border:      #c2cde0;
  --border-lg:   #9eaec8;

  --accent:      #0099ff;
  --accent-2:    #00d6a3;
  --accent-warm: #f59e0b;
  --accent-glow: rgba(0, 153, 255, 0.18);

  --text-1:      #111826;
  --text-2:      #2c3a50;
  --text-3:      #5a6d88;

  --grad: linear-gradient(130deg, var(--accent) 0%, #70f0ff 54%, var(--accent-2) 100%);

  --font-sans: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --nav-h: 68px;
  --radius: 14px;
  --radius-sm: 8px;
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 0.3s var(--ease-standard);
  --reveal-duration: 0.82s;
  --scroll-progress: 0;

  /* cursor glow coords */
  --cx: -200px;
  --cy: -200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.7;
  overflow-x: hidden;
  background-image:
    radial-gradient(900px 600px at 85% -8%,  rgba(0,153,255,0.14), transparent 62%),
    radial-gradient(700px 500px at -5% 85%,  rgba(0,214,163,0.10), transparent 60%),
    radial-gradient(600px 400px at 50% 40%,  rgba(0,100,200,0.05), transparent 55%),
    linear-gradient(180deg, #edf2fc 0%, var(--bg) 35%, #d4dced 100%);
  background-attachment: fixed;
}

/* Scroll progress bar */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 3px;
  transform-origin: left center;
  transform: scaleX(var(--scroll-progress));
  background: linear-gradient(90deg, var(--accent), #60e8ff 45%, var(--accent-2));
  box-shadow: 0 0 16px rgba(0, 153, 255, 0.45), 0 0 4px rgba(0,214,163,0.3);
  z-index: 1100;
  pointer-events: none;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ─── SCROLLBAR ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-lg); border-radius: 3px; }

/* ─── SELECTION ────────────────────────────────────────────────────────────── */
::selection { background: rgba(0, 167, 255, 0.3); color: #fff; }

/* ─── LAYOUT HELPERS ──────────────────────────────────────────────────────── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.section    { padding: 100px 0; position: relative; z-index: 1; }
.section-alt {
  background: linear-gradient(180deg, rgba(225, 233, 248, 0.85) 0%, rgba(212, 224, 242, 0.9) 100%);
  border-top: 1px solid rgba(0,153,255,0.06);
  border-bottom: 1px solid rgba(0,153,255,0.06);
  position: relative;
  z-index: 1;
}

/* ─── SECTION HEADERS ─────────────────────────────────────────────────────── */
.section-header { text-align: center; margin-bottom: 60px; }
.section-header::after {
  content: '';
  display: block;
  width: 56px; height: 3px;
  background: var(--grad);
  border-radius: 3px;
  margin: 18px auto 0;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  margin-top: 14px;
  color: var(--text-3);
  font-size: 0.92rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ─── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn-primary, .btn-outline, .btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--grad);
  color: #031b2e;
  box-shadow: 0 6px 20px rgba(0, 167, 255, 0.26);
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.22), transparent);
  transition: left 0.55s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 167, 255, 0.38); }
.btn-primary:hover::after { left: 100%; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover { background: var(--accent-glow); transform: translateY(-2px); }

/* ─── CARD GLOW OVERLAY ───────────────────────────────────────────────────── */
.philosophy-strip,
.timeline-card,
.skill-cat-card,
.case-card,
.project-card,
.cert-card,
.article-card,
.github-repo-card,
.contact-channel,
.contact-card {
  box-shadow:
    0 2px 8px rgba(0, 60, 120, 0.06),
    0 10px 28px rgba(60, 80, 110, 0.10);
  position: relative;
  overflow: hidden;
}

.philosophy-strip::after,
.timeline-card::after,
.skill-cat-card::after,
.case-card::after,
.project-card::after,
.cert-card::after,
.article-card::after,
.github-repo-card::after,
.contact-channel::after,
.contact-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 140% at 0% 0%, rgba(0, 153, 255, 0.12), transparent 50%);
  opacity: 0;
  transition: opacity 0.45s var(--ease-smooth);
  pointer-events: none;
}

.philosophy-strip:hover::after,
.timeline-card:hover::after,
.skill-cat-card:hover::after,
.case-card:hover::after,
.project-card:hover::after,
.cert-card:hover::after,
.article-card:hover::after,
.github-repo-card:hover::after,
.contact-channel:hover::after,
.contact-card:hover::after {
  opacity: 1;
}

/* ─── CURSOR GLOW ─────────────────────────────────────────────────────────── */
.cursor-glow {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,153,255,0.08) 0%, rgba(0,214,163,0.03) 35%, transparent 65%);
  transform: translate(-50%, -50%);
  left: var(--cx);
  top: var(--cy);
  transition: left 0.06s linear, top 0.06s linear;
  mix-blend-mode: multiply;
}

/* ─── BACK TO TOP ─────────────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--grad);
  color: #031b2e;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  box-shadow: 0 6px 20px rgba(0,167,255,0.3);
  opacity: 0;
  transform: translateY(20px) scale(0.8);
  transition: opacity 0.4s ease, transform 0.4s var(--ease-smooth);
  z-index: 900;
  pointer-events: none;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.back-to-top:hover { transform: translateY(-3px) scale(1.08); box-shadow: 0 10px 28px rgba(0,167,255,0.4); }

/* ─── ANIMATIONS ──────────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translate3d(0, 38px, 0) scale(0.982);
  filter: blur(6px);
  transition:
    opacity var(--reveal-duration) var(--ease-smooth),
    transform var(--reveal-duration) var(--ease-smooth),
    filter calc(var(--reveal-duration) - 0.15s) var(--ease-smooth);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform, filter;
}
.fade-in.visible { opacity: 1; transform: translate3d(0, 0, 0) scale(1); filter: blur(0); }
.delay-1 { transition-delay: 0.15s !important; }
.delay-2 { transition-delay: 0.3s !important; }
.delay-3 { transition-delay: 0.45s !important; }

/* Stagger children inside a visible container */
.fade-in.visible .skill-cat-card:nth-child(1) { animation-delay: 0ms; }
.fade-in.visible .skill-cat-card:nth-child(2) { animation-delay: 60ms; }
.fade-in.visible .skill-cat-card:nth-child(3) { animation-delay: 120ms; }
.fade-in.visible .skill-cat-card:nth-child(4) { animation-delay: 180ms; }
.fade-in.visible .skill-cat-card:nth-child(5) { animation-delay: 240ms; }
.fade-in.visible .skill-cat-card:nth-child(6) { animation-delay: 300ms; }

/* ─── EXPANDABLE CARDS ────────────────────────────────────────────────────── */
.card-expand-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.52s var(--ease-smooth), opacity 0.4s ease;
  opacity: 0;
}
.expandable-card.expanded .card-expand-body {
  max-height: 2000px;
  opacity: 1;
}

/* Extra skill tags hidden by default */
.skill-tags-extra {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease-smooth), opacity 0.35s ease;
  opacity: 0;
  margin-top: 0;
}
.expandable-card.expanded .skill-tags-extra {
  max-height: 200px;
  opacity: 1;
  margin-top: 7px;
}

.expand-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 14px;
  background: none; border: none; cursor: pointer;
  font-size: 0.8rem; font-weight: 600;
  color: var(--accent);
  font-family: var(--font-sans);
  padding: 4px 0;
  transition: color var(--transition);
}
.expand-toggle:hover { color: var(--accent-2); }
.expand-chevron {
  transition: transform 0.35s var(--ease-smooth);
  font-size: 0.7rem;
}
.expandable-card.expanded .expand-chevron { transform: rotate(180deg); }

/* Case study expand toggle — full-width bottom */
.expand-toggle-case {
  width: 100%;
  justify-content: center;
  padding: 10px 0 4px;
  border-top: 1px solid var(--border);
  margin-top: 16px;
  font-size: 0.84rem;
}

/* Stat badges (case studies tile) */
.case-stat-badges {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 10px;
}
.stat-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(0,167,255,0.09);
  border: 1px solid rgba(0,167,255,0.2);
  color: var(--accent);
  padding: 4px 12px; border-radius: 100px;
  font-size: 0.77rem; font-weight: 600;
  font-family: var(--font-mono);
}
.stat-badge i { font-size: 0.72rem; }

/* ─── 3D TILT CARDS ───────────────────────────────────────────────────────── */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform 0.18s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  will-change: transform;
}

/* ─── NAVBAR ──────────────────────────────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(234, 240, 251, 0.7);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(228, 236, 250, 0.92);
  border-bottom-color: rgba(0,153,255,0.12);
  box-shadow: 0 4px 20px rgba(0, 80, 160, 0.10), 0 1px 0 rgba(0,153,255,0.06);
}
.nav-container {
  max-width: 1200px; margin: 0 auto;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 800;
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 200% auto;
  transition: background-position 0.8s ease;
}
#navbar.scrolled .nav-logo {
  background-position: right center;
}
.accent-dot { color: var(--accent-2); -webkit-text-fill-color: var(--accent-2); }

.nav-links { display: flex; gap: 6px; }
.nav-link {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-1);
  background: rgba(0,167,255,0.12);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 8px; right: 8px; bottom: 2px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s var(--ease-smooth);
}
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text-2); border-radius: 2px; transition: var(--transition); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── HERO ────────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  position: relative;
  padding-top: var(--nav-h);
  overflow: hidden;
  isolation: isolate;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,167,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,167,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  animation: gridDrift 30s linear infinite;
}
@keyframes gridDrift {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

/* Gradient mesh orbs */
#hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,153,255,0.18) 0%, rgba(0,153,255,0.06) 40%, transparent 65%);
  pointer-events: none;
  animation: heroOrb1 12s ease-in-out infinite;
}
#hero::after {
  content: '';
  position: absolute;
  bottom: -150px; left: -120px;
  width: 560px; height: 560px;
  background: radial-gradient(circle, rgba(0,214,163,0.14) 0%, rgba(0,214,163,0.04) 40%, transparent 65%);
  pointer-events: none;
  animation: heroOrb2 15s ease-in-out infinite alternate;
}
@keyframes heroOrb1 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.8; }
  33%      { transform: translate(-30px, 25px) scale(1.12); opacity: 1; }
  66%      { transform: translate(18px, -18px) scale(0.94); opacity: 0.7; }
}
@keyframes heroOrb2 {
  from { transform: translate(0, 0) scale(1); opacity: 0.7; }
  to   { transform: translate(40px, -30px) scale(1.18); opacity: 1; }
}

/* Floating particles */
.hero-particles {
  position: absolute; inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-particles::before,
.hero-particles::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  animation: particleDrift 20s ease-in-out infinite;
}
/* Use multiple box-shadows for 20 particles */
.hero-particles::before {
  width: 4px; height: 4px;
  background: rgba(0,167,255,0.5);
  top: 15%; left: 8%;
  box-shadow:
    80px 120px 0 rgba(0,167,255,0.35),
    200px 60px 0 rgba(0,214,163,0.4),
    350px 180px 0 rgba(0,167,255,0.3),
    500px 40px 0 rgba(0,214,163,0.35),
    650px 200px 0 rgba(0,167,255,0.28),
    820px 90px 0 rgba(0,214,163,0.32),
    950px 170px 0 rgba(0,167,255,0.25),
    1100px 50px 0 rgba(0,214,163,0.3),
    140px 320px 0 rgba(0,167,255,0.2),
    410px 380px 0 rgba(0,214,163,0.25);
  animation-delay: 0s;
}
.hero-particles::after {
  width: 3px; height: 3px;
  background: rgba(0,214,163,0.45);
  top: 70%; left: 15%;
  box-shadow:
    120px -80px 0 rgba(0,167,255,0.3),
    300px -40px 0 rgba(0,214,163,0.35),
    480px -120px 0 rgba(0,167,255,0.28),
    650px -60px 0 rgba(0,214,163,0.3),
    800px -100px 0 rgba(0,167,255,0.25),
    960px -50px 0 rgba(0,214,163,0.28),
    1050px -140px 0 rgba(0,167,255,0.22),
    220px 80px 0 rgba(0,214,163,0.2),
    570px 60px 0 rgba(0,167,255,0.24),
    740px 90px 0 rgba(0,214,163,0.22);
  animation-delay: -10s;
}
@keyframes particleDrift {
  0%, 100% { transform: translateY(0px) translateX(0px); }
  25%  { transform: translateY(-18px) translateX(10px); }
  50%  { transform: translateY(-8px) translateX(-8px); }
  75%  { transform: translateY(-22px) translateX(6px); }
}

.hero-inner {
  max-width: 1200px; margin: 0 auto; padding: 60px 24px;
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; gap: 60px;
}

/* Hero Left */
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(20, 184, 166, 0.1);
  border: 1px solid rgba(20, 184, 166, 0.3);
  color: var(--accent-2);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.82rem; font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.pulse-dot {
  width: 8px; height: 8px;
  background: var(--accent-2);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(0,214,163,0.5); }
  50%       { opacity: 0.8; transform: scale(1.15); box-shadow: 0 0 0 7px transparent; }
}

.hero-name {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.gradient-text {
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}

.hero-role {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 24px;
  min-height: 2em;
}
.type-cursor {
  animation: blink 0.8s step-end infinite;
  color: var(--accent-2);
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-desc {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }

/* Hero stats with counter */
.hero-stats { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.stat-card {
  text-align: center;
  padding: 12px 16px;
  border: 1px solid rgba(0,153,255,0.15);
  background: linear-gradient(135deg, rgba(240,245,255,0.85), rgba(225,235,252,0.75));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-sm);
  min-width: 118px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(0,153,255,0.18);
  border-color: rgba(0,153,255,0.3);
}
.stat-num {
  display: block;
  font-size: 1.9rem; font-weight: 800;
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1.1;
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}
.stat-divider { display: none; }
.accent-text { -webkit-text-fill-color: var(--accent-2); }

.hero-expertise {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-expertise span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.76rem; font-weight: 600;
  color: var(--text-2);
  background: rgba(0, 167, 255, 0.08);
  border: 1px solid rgba(0, 167, 255, 0.2);
  border-radius: 999px;
  padding: 5px 12px;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.hero-expertise span:hover {
  background: rgba(0, 167, 255, 0.14);
  border-color: rgba(0, 167, 255, 0.35);
}
.hero-expertise i { color: var(--accent); font-size: 0.74rem; }

/* Hero Right — Code Window */
.hero-right { position: relative; }
.code-window {
  background: linear-gradient(160deg, var(--surface), rgba(228,238,255,0.6));
  border: 1px solid rgba(0,153,255,0.18);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow:
    0 20px 50px rgba(0,60,120,0.12),
    0 0 0 1px rgba(0,153,255,0.08),
    0 0 60px rgba(0,153,255,0.06);
  position: relative; z-index: 1;
  transition: box-shadow 0.4s ease, border-color 0.4s ease;
}
.hero-right:hover .code-window {
  border-color: rgba(0,153,255,0.35);
  box-shadow:
    0 24px 60px rgba(0,60,120,0.18),
    0 0 0 1px rgba(0,153,255,0.2),
    0 0 80px rgba(0,153,255,0.10);
}
.window-titlebar {
  display: flex; align-items: center; gap: 12px;
  background: var(--card);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.window-dots { display: flex; gap: 7px; }
.wd { width: 12px; height: 12px; border-radius: 50%; }
.wd.red { background: #ff5f57; }
.wd.yellow { background: #febc2e; }
.wd.green { background: #28c840; }
.window-filename { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-3); margin-left: auto; }
.code-body {
  padding: 24px 28px;
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.8;
  overflow-x: auto;
}
.code-body .c   { color: #546e7a; }
.code-body .kw  { color: #b7791f; }
.code-body .cls { color: var(--accent-2); font-weight: 600; }
.code-body .str { color: #2f855a; }
.code-body .fn  { color: var(--accent); }

/* Floating badges */
.float-badge {
  position: absolute;
  background: linear-gradient(135deg, rgba(240,246,255,0.92), rgba(225,238,255,0.85));
  border: 1px solid rgba(0,153,255,0.25);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 0.8rem; font-weight: 600;
  color: var(--text-1);
  display: flex; align-items: center; gap: 8px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 8px 24px rgba(0,80,160,0.12),
    0 0 20px rgba(0,153,255,0.10),
    inset 0 1px 0 rgba(255,255,255,0.6);
  --tx: 0px; --ty: 0px;
  transform: translate3d(var(--tx), var(--ty), 0);
  transition: transform 280ms var(--ease-smooth), border-color var(--transition), box-shadow var(--transition);
  animation: float 5s ease-in-out infinite;
  will-change: transform;
}
.float-badge i { color: var(--accent); }
.b1 { top: -18px; left: -30px; animation-delay: 0s; }
.b2 { bottom: 60px; right: -30px; animation-delay: 1.5s; }
.b3 { bottom: -18px; left: 40px; animation-delay: 0.8s; }
@keyframes float {
  0%,100% { translate: 0 0; }
  50%      { translate: 0 -10px; }
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  color: var(--text-3); font-size: 1.1rem;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(7px)} }

/* ─── ABOUT ───────────────────────────────────────────────────────────────── */
.about-grid {
  display: grid; grid-template-columns: 220px 1fr;
  gap: 60px; align-items: start;
  margin-bottom: 60px;
}
.about-avatar-col { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.avatar-wrapper {
  width: 150px; height: 150px;
  position: relative;
  display: flex; align-items: center; justify-content: center;
}
.avatar-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  background: var(--grad);
  padding: 3px;
  animation: spin 8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.avatar-ring::after {
  content: '';
  position: absolute; inset: 3px;
  background: var(--surface);
  border-radius: 50%;
}
.avatar-initials {
  font-size: 2.8rem; font-weight: 800;
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  position: relative; z-index: 1;
}
.about-links { display: flex; gap: 12px; }
.about-links a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: var(--transition);
}
.about-links a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

.about-text p { color: var(--text-2); margin-bottom: 18px; font-size: 1rem; }
.about-text p strong { color: var(--text-1); }
.about-details {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; margin-top: 28px;
}
.detail-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.88rem; color: var(--text-2);
}
.detail-item i { color: var(--accent); width: 16px; text-align: center; }

/* Philosophy Strip */
.philosophy-strip {
  background: linear-gradient(135deg, var(--surface), rgba(220,232,252,0.5));
  border: 1px solid rgba(0,153,255,0.12);
  border-radius: var(--radius);
  padding: 32px 36px;
  position: relative;
  overflow: hidden;
}
.philosophy-strip::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--grad);
  background-size: 100% 200%;
  animation: gradientSlide 3s ease-in-out infinite;
}
.philosophy-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 28px;
  color: var(--text-2);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.philosophy-header i { color: var(--accent); font-size: 1rem; }
.philosophy-pillars {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px;
}
.pillar {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
}
.pillar > i {
  color: var(--accent-2);
  font-size: 1.1rem;
  margin-bottom: 4px;
}
.pillar-title { font-size: 0.85rem; font-weight: 700; color: var(--text-1); line-height: 1.3; }
.pillar-desc  { font-size: 0.78rem; color: var(--text-3); line-height: 1.5; }

/* ─── EXPERIENCE ──────────────────────────────────────────────────────────── */
.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute; left: 20px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  opacity: 0.5;
  animation: timelineGlow 4s ease-in-out infinite;
}
@keyframes timelineGlow {
  0%, 100% { opacity: 0.4; box-shadow: 0 0 6px rgba(0,167,255,0.2); }
  50%       { opacity: 0.8; box-shadow: 0 0 24px rgba(0,214,163,0.55); }
}
.timeline-item { position: relative; padding-left: 60px; margin-bottom: 48px; }
.timeline-dot {
  position: absolute; left: 12px; top: 24px;
  width: 18px; height: 18px;
  background: var(--grad);
  border-radius: 50%;
  border: 3px solid var(--bg-alt);
  box-shadow: 0 0 12px var(--accent-glow);
  animation: timelinePulse 3s ease-in-out infinite;
}
@keyframes timelinePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,167,255,0.4), 0 0 12px var(--accent-glow); }
  50%       { box-shadow: 0 0 0 7px rgba(0,167,255,0), 0 0 20px rgba(0,167,255,0.3); }
}
.timeline-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: var(--transition);
}
.timeline-card:hover { border-color: var(--border-lg); box-shadow: 0 14px 36px rgba(70, 84, 104, 0.2); }

.timeline-card-featured {
  border-color: rgba(0,153,255,0.3);
  background: linear-gradient(135deg, rgba(0,153,255,0.05), rgba(0,214,163,0.03), rgba(0,153,255,0.02));
  position: relative; overflow: hidden;
}
.timeline-card-featured::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad);
  background-size: 100% 200%;
  animation: gradientSlide 3s ease-in-out infinite;
}
.timeline-card-featured:hover {
  border-color: rgba(0,153,255,0.5);
  box-shadow:
    0 0 0 1px rgba(0,153,255,0.12),
    0 14px 40px rgba(0,80,160,0.14);
}

.job-ai-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(0,167,255,0.12);
  border: 1px solid rgba(0,167,255,0.25);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.76rem; font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.job-ai-badge i { font-size: 0.75rem; }

.timeline-header { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.job-title { font-size: 1.15rem; font-weight: 700; color: var(--text-1); }
.company-name { display: flex; align-items: center; gap: 7px; color: var(--accent); font-weight: 600; font-size: 0.95rem; margin-top: 4px; }
.timeline-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.timeline-date, .timeline-loc { font-size: 0.82rem; color: var(--text-3); display: flex; align-items: center; gap: 6px; }
.job-bullets { padding-left: 0; margin-bottom: 20px; }
.job-bullets li {
  color: var(--text-2); font-size: 0.93rem;
  padding: 5px 0 5px 20px;
  position: relative;
}
.job-bullets li::before {
  content: '>';
  position: absolute; left: 0;
  color: var(--accent-2);
}
.job-bullets li strong { color: var(--text-1); }
.job-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.job-tags span, .project-tags span, .contact-skills span {
  background: rgba(0,167,255,0.08);
  border: 1px solid rgba(0,167,255,0.18);
  color: var(--accent);
  padding: 3px 12px; border-radius: 100px;
  font-size: 0.78rem; font-weight: 500;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.job-tags span:hover, .project-tags span:hover {
  background: rgba(0,167,255,0.16);
  border-color: rgba(0,167,255,0.35);
}

/* ─── SKILLS ──────────────────────────────────────────────────────────────── */
.marquee-wrapper {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  margin-bottom: 60px;
}
.marquee { display: flex; margin-bottom: 14px; }
.marquee-track {
  display: flex; gap: 12px;
  white-space: nowrap; flex-shrink: 0;
}
.marquee-left .marquee-track  { animation: scrollLeft  35s linear infinite; }
.marquee-right .marquee-track { animation: scrollRight 40s linear infinite; }
@keyframes scrollLeft  { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }
@keyframes scrollRight { 0%{transform:translateX(-50%)} 100%{transform:translateX(0)} }
.marquee:hover .marquee-track { animation-play-state: paused; }

.skill-chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 18px;
  font-size: 0.85rem;
  color: var(--text-2);
  transition: var(--transition);
  cursor: default;
  user-select: none;
  position: relative;
  overflow: hidden;
}
.skill-chip::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0,153,255,0.15), rgba(255,255,255,0.25), transparent);
  transition: left 0.55s ease;
}
.skill-chip:hover {
  border-color: var(--accent);
  color: var(--text-1);
  background: rgba(0,153,255,0.08);
  box-shadow: 0 2px 12px rgba(0,153,255,0.10);
}
.skill-chip:hover::after { left: 100%; }
.skill-chip i { color: var(--accent); }

/* 6 cards in 3 columns */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.skill-cat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  height: 100%;
  display: flex; flex-direction: column;
}
.skill-cat-card:hover {
  border-color: rgba(0,153,255,0.4);
  transform: translateY(-5px);
  box-shadow:
    0 0 0 1px rgba(0,153,255,0.18),
    0 8px 24px rgba(0,100,200,0.12),
    0 20px 48px rgba(60,80,120,0.14);
  background: linear-gradient(145deg, rgba(235,242,255,0.95), rgba(220,234,255,0.88));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.skill-cat-icon {
  width: 48px; height: 48px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; color: var(--accent);
  margin-bottom: 16px;
}
.skill-cat-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 14px; color: var(--text-1); }
.skill-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.skill-tags span {
  background: rgba(0,167,255,0.08);
  border: 1px solid rgba(0,167,255,0.18);
  color: var(--accent);
  padding: 3px 11px; border-radius: 100px;
  font-size: 0.75rem; font-weight: 500;
}

/* ─── CASE STUDIES ────────────────────────────────────────────────────────── */
.case-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 36px;
  transition: var(--transition);
  display: flex; flex-direction: column; gap: 16px;
  height: 100%;
}
.case-card:hover { border-color: rgba(0,167,255,0.35); box-shadow: 0 0 0 1px rgba(0,167,255,0.18), 0 16px 42px rgba(70,84,104,0.22); }

.case-card-featured {
  border-color: rgba(0,153,255,0.3);
  background: linear-gradient(135deg, rgba(0,153,255,0.06) 0%, rgba(0,214,163,0.04) 50%, rgba(0,153,255,0.03) 100%);
  margin-bottom: 24px;
  position: relative; overflow: hidden;
}
.case-card-featured::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--grad);
  background-size: 100% 200%;
  animation: gradientSlide 3s ease-in-out infinite;
}
@keyframes gradientSlide {
  0%, 100% { background-position: 0% 0%; }
  50%      { background-position: 0% 100%; }
}
.case-card-featured:hover {
  border-color: rgba(0,153,255,0.5);
  box-shadow:
    0 0 0 1px rgba(0,153,255,0.15),
    0 12px 36px rgba(0,100,200,0.14),
    0 0 40px rgba(0,153,255,0.06);
}

/* Side-by-side row for B + C */
.case-cards-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch;
}

/* Card top section */
.case-top {
  display: flex; align-items: flex-start; gap: 18px;
  flex-wrap: wrap;
}
.case-icon-wrap {
  width: 54px; height: 54px; flex-shrink: 0;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--accent);
}
.case-icon-wrap.small {
  width: 44px; height: 44px;
  font-size: 1.15rem;
}
.case-title-block { flex: 1; min-width: 0; }
.case-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.75rem; color: var(--text-3);
  font-family: var(--font-mono);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.case-label i { font-size: 0.7rem; }
.case-title-block h3 {
  font-size: 1.15rem; font-weight: 700; color: var(--text-1);
  line-height: 1.35; margin-bottom: 6px;
}
.case-role {
  font-size: 0.82rem; color: var(--accent);
  font-weight: 600;
}
.case-status {
  flex-shrink: 0;
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  align-self: flex-start;
}
.status-active {
  background: rgba(0,214,163,0.12);
  border: 1px solid rgba(0,214,163,0.3);
  color: var(--accent-2);
}

.case-summary { color: var(--text-2); font-size: 0.93rem; line-height: 1.7; }

.case-section-label {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.75rem; font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.1em;
  font-family: var(--font-mono);
  margin-bottom: 10px;
}
.case-section-label i { color: var(--accent); font-size: 0.8rem; }

/* Pipeline visualization */
.case-pipeline {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  background: linear-gradient(135deg, rgba(235,242,255,0.7), rgba(220,232,252,0.6));
  border: 1px solid rgba(0,153,255,0.12);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 16px;
}
.pipeline-step {
  background: rgba(0,167,255,0.1);
  border: 1px solid rgba(0,167,255,0.25);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--accent);
  white-space: nowrap;
  transition: var(--transition);
}
.pipeline-step:hover { background: rgba(0,167,255,0.2); border-color: var(--accent); }
.pipeline-arrow { color: var(--accent-2); font-size: 1rem; opacity: 0.7; }

/* Results row */
.case-results { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.result-chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,214,163,0.08);
  border: 1px solid rgba(0,214,163,0.22);
  border-radius: var(--radius-sm);
  padding: 7px 16px;
  font-size: 0.83rem; font-weight: 600;
  color: var(--accent-2);
  transition: var(--transition);
}
.result-chip i { font-size: 0.8rem; }
.result-chip:hover { background: rgba(0,214,163,0.14); }

/* Case footer */
.case-footer {
  display: flex; flex-direction: column; gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.case-deliverables {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  font-size: 0.8rem; color: var(--text-3);
}
.deliv-label { font-weight: 700; color: var(--text-2); }
.case-deliverables span:not(.deliv-label) {
  background: rgba(100,116,139,0.1);
  border: 1px solid rgba(100,116,139,0.2);
  padding: 2px 10px; border-radius: 100px;
}
.case-tags { margin-top: 4px; }

.case-contributions { display: flex; flex-direction: column; gap: 8px; }
.contrib-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.87rem; color: var(--text-2);
}
.contrib-item i { color: var(--accent-2); font-size: 0.8rem; flex-shrink: 0; }

.case-components { display: flex; flex-direction: column; gap: 8px; }
.comp-item {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.87rem; color: var(--text-2);
}
.comp-dot {
  width: 6px; height: 6px; flex-shrink: 0;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 8px;
}

/* ─── PROJECTS ────────────────────────────────────────────────────────────── */
.projects-sub-header { margin-bottom: 20px; margin-top: 44px; }
.projects-sub-header:first-of-type { margin-top: 0; }
.sub-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.82rem; font-weight: 600;
  color: var(--text-2);
}
.sub-tag i { color: var(--accent); }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 0; align-items: stretch; }
.projects-grid-2 { grid-template-columns: repeat(2, 1fr); }

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: var(--transition);
  display: flex; flex-direction: column;
  height: 100%;
}
.project-card:hover {
  border-color: rgba(0,167,255,0.45);
  box-shadow: 0 0 0 1px rgba(0,167,255,0.22), 0 20px 44px rgba(70,84,104,0.2);
}
.project-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.project-icon {
  width: 44px; height: 44px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--accent);
}
.ai-icon   { background: rgba(0,214,163,0.1); color: var(--accent-2); }
.eval-icon { background: rgba(245,158,11,0.1); color: #f59e0b; }

.project-ai   { border-color: rgba(0,214,163,0.2); }
.project-ai:hover { border-color: var(--accent-2); }
.project-eval { border-color: rgba(245,158,11,0.2); }
.project-eval:hover { border-color: #f59e0b; box-shadow: 0 16px 40px rgba(245,158,11,0.15); }
.project-eval .project-tags span {
  background: rgba(245,158,11,0.08);
  border-color: rgba(245,158,11,0.2);
  color: #f59e0b;
}

.project-date { font-size: 0.75rem; color: var(--text-3); font-family: var(--font-mono); }
.project-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; color: var(--text-1); }
.project-summary-text { color: var(--text-2); font-size: 0.88rem; line-height: 1.65; margin-bottom: 12px; }
.project-card .card-expand-body p { color: var(--text-2); font-size: 0.88rem; line-height: 1.65; margin-bottom: 12px; }
.project-card .card-expand-body p strong { color: var(--accent-2); }
.project-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; }
.project-tags-preview { margin-top: 0; }

/* ─── CERTIFICATIONS ──────────────────────────────────────────────────────── */
.certs-featured-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  margin-bottom: 20px;
}
.certs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }

.cert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; align-items: center; gap: 18px;
  position: relative; overflow: hidden;
  transition: var(--transition);
  height: 100%;
}
.cert-card:hover { border-color: rgba(0,167,255,0.35); transform: translateY(-3px); box-shadow: 0 0 0 1px rgba(0,167,255,0.18), 0 12px 34px rgba(70,84,104,0.2); }

.cert-card.featured {
  border-color: rgba(0,167,255,0.4);
  background: linear-gradient(135deg, rgba(0,167,255,0.08), rgba(0,214,163,0.05));
}
.cert-card.cert-highlight {
  border-color: rgba(0,214,163,0.3);
  background: linear-gradient(135deg, rgba(0,214,163,0.07), rgba(0,167,255,0.04));
}

.cert-badge {
  width: 56px; height: 56px; flex-shrink: 0;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: var(--accent);
}
.cert-badge.ai-cert      { background: rgba(0,214,163,0.12); color: var(--accent-2); }
.cert-badge.databricks   { background: rgba(255,87,34,0.1); color: #ff5722; }
.cert-badge.databricks-ai{ background: rgba(245,158,11,0.12); color: #f59e0b; }
.cert-badge.leanix       { background: rgba(255,193,7,0.1); color: #ffc107; }

.cert-info { flex: 1; }
.cert-info h3 { font-size: 0.95rem; font-weight: 700; color: var(--text-1); margin-bottom: 6px; line-height: 1.3; }
.cert-issuer, .cert-date { display: block; font-size: 0.79rem; color: var(--text-3); }
.cert-date { margin-top: 3px; }

.cert-ribbon {
  position: absolute; top: 12px; right: -22px;
  background: var(--grad); color: #fff;
  padding: 3px 32px; font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.1em;
  transform: rotate(35deg);
}
.green-ribbon { background: linear-gradient(135deg, var(--accent-2), #00a884); }

/* ─── ARTICLES ────────────────────────────────────────────────────────────── */
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.article-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; flex-direction: column;
  transition: var(--transition);
  height: 100%;
}
.article-card:hover {
  border-color: rgba(0,167,255,0.45);
  transform: translateY(-5px);
  box-shadow: 0 0 0 1px rgba(0,167,255,0.22), 0 16px 40px rgba(70,84,104,0.2);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.article-icon {
  width: 52px; height: 52px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--accent);
  margin-bottom: 16px;
}
.article-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.article-date { font-size: 0.78rem; color: var(--text-3); font-family: var(--font-mono); }
.article-platform { font-size: 0.78rem; color: #0e76a8; display: flex; align-items: center; gap: 5px; }
.article-card h3 { font-size: 1rem; font-weight: 700; color: var(--text-1); margin-bottom: 10px; line-height: 1.4; }
.article-summary-text { color: var(--text-2); font-size: 0.87rem; line-height: 1.65; margin-bottom: 4px; }
.article-card .card-expand-body p { color: var(--text-2); font-size: 0.87rem; line-height: 1.65; margin-bottom: 8px; }
.article-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: auto;
  font-size: 0.82rem; color: var(--text-3);
  padding-top: 12px;
}
.read-more { color: var(--accent); display: flex; align-items: center; gap: 6px; font-weight: 600; }
.article-card:hover .read-more i { transform: translateX(4px); transition: var(--transition); }

/* ─── CONTACT ─────────────────────────────────────────────────────────────── */
.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.contact-intro { color: var(--text-2); font-size: 1.05rem; line-height: 1.75; margin-bottom: 36px; }
.contact-intro strong { color: var(--text-1); }
.contact-channels { display: flex; flex-direction: column; gap: 14px; }
.contact-channel {
  display: flex; align-items: center; gap: 16px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 22px;
  transition: var(--transition);
}
.contact-channel:hover { border-color: var(--accent); transform: translateX(4px); }
.ch-icon {
  width: 46px; height: 46px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.ch-icon.linkedin { background: rgba(14,118,168,0.15); color: #0e76a8; }
.ch-icon.email    { background: var(--accent-glow); color: var(--accent); }
.ch-label { display: block; font-size: 0.75rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; }
.ch-value { display: block; font-weight: 600; color: var(--text-1); margin-top: 2px; }
.ch-ext { margin-left: auto; color: var(--text-3); font-size: 0.8rem; }

.contact-card {
  background: var(--card);
  border: 1px solid var(--border-lg);
  border-radius: var(--radius);
  padding: 36px 32px;
  text-align: center;
}
.availability-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,214,163,0.1); border: 1px solid rgba(0,214,163,0.3);
  color: var(--accent-2); padding: 6px 16px; border-radius: 100px;
  font-size: 0.8rem; font-weight: 600; margin-bottom: 20px;
}
.contact-card h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 6px; }
.contact-card p  { color: var(--text-2); margin-bottom: 8px; font-size: 0.92rem; }
.contact-loc { color: var(--text-3) !important; display: flex; align-items: center; justify-content: center; gap: 7px; margin-bottom: 20px !important; }
.contact-skills { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }

/* ─── FOOTER ──────────────────────────────────────────────────────────────── */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 28px 24px;
}
.footer-inner { display: flex; align-items: center; justify-content: center; gap: 24px; }
.footer-logo { font-size: 1.2rem; font-weight: 800; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-text { color: var(--text-3); font-size: 0.88rem; }
.footer-link { color: var(--text-3); font-size: 1.1rem; transition: var(--transition); }
.footer-link:hover { color: var(--accent); }

/* ─── AVATAR PHOTO ────────────────────────────────────────────────────────── */
.avatar-photo {
  width: 144px; height: 144px;
  border-radius: 50%;
  object-fit: cover;
  position: relative; z-index: 1;
  display: block;
}

/* ─── GITHUB / OPEN SOURCE ────────────────────────────────────────────────── */
.github-banner {
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, rgba(0,167,255,0.06), rgba(0,214,163,0.04));
  border: 1px solid rgba(0,167,255,0.2);
  border-radius: var(--radius);
  padding: 22px 32px;
  margin-bottom: 40px;
  gap: 20px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.github-banner::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--grad);
}
.github-banner-left { display: flex; align-items: center; gap: 18px; }
.github-avatar {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--text-2);
  overflow: hidden; flex-shrink: 0;
}
.github-avatar img { width: 100%; height: 100%; object-fit: cover; }
.github-banner-info h4 { font-size: 1.05rem; font-weight: 700; color: var(--text-1); margin-bottom: 4px; }
.github-banner-info p  { font-size: 0.84rem; color: var(--text-2); }
.github-stats { display: flex; gap: 28px; }
.github-stat { text-align: center; }
.github-stat-num {
  display: block;
  font-size: 1.5rem; font-weight: 800;
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1.1;
}
.github-stat-label { font-size: 0.68rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 3px; display: block; }
.github-view-all {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,167,255,0.1);
  border: 1px solid rgba(0,167,255,0.25);
  color: var(--accent);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem; font-weight: 600;
  transition: var(--transition);
}
.github-view-all:hover { background: rgba(0,167,255,0.18); transform: translateY(-1px); }

.github-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }

.github-repo-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column;
  transition: var(--transition);
  text-decoration: none; color: inherit;
  cursor: pointer; height: 100%;
}
.github-repo-card:hover {
  border-color: rgba(0,153,255,0.35);
  transform: translateY(-5px);
  box-shadow:
    0 0 0 1px rgba(0,153,255,0.15),
    0 8px 24px rgba(0,80,160,0.10),
    0 20px 48px rgba(60,80,120,0.12);
  background: linear-gradient(145deg, rgba(232,242,255,0.95), rgba(218,232,252,0.88));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.github-repo-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.github-repo-icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.gh-icon-ai    { background: rgba(0,167,255,0.12); color: var(--accent); }
.gh-icon-graph { background: rgba(0,214,163,0.1); color: var(--accent-2); }
.gh-icon-app   { background: rgba(255,152,0,0.1); color: #ff9800; }
.gh-icon-bot   { background: rgba(245,158,11,0.12); color: #f59e0b; }
.gh-icon-chat  { background: rgba(34,211,238,0.1); color: #22d3ee; }
.gh-icon-check { background: rgba(52,211,153,0.1); color: #34d399; }

.github-repo-link { color: var(--text-3); font-size: 0.95rem; transition: var(--transition); }
.github-repo-card:hover .github-repo-link { color: var(--accent); }

.github-repo-card h4 {
  font-size: 0.93rem; font-weight: 700; color: var(--text-1);
  margin-bottom: 10px; line-height: 1.35;
  font-family: var(--font-mono);
}
.github-repo-card p  {
  font-size: 0.84rem; color: var(--text-2);
  line-height: 1.65; flex: 1; margin-bottom: 16px;
}
.github-repo-footer {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 8px; margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.github-lang {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.75rem; color: var(--text-3); font-family: var(--font-mono);
}
.lang-dot  { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.lang-py   { background: #3572A5; }
.lang-md   { background: #083fa1; }
.lang-none { background: var(--border-lg); }

.github-stars { display: flex; align-items: center; gap: 5px; font-size: 0.75rem; color: var(--text-3); margin-left: auto; }
.github-stars i { color: #f0c040; }

.github-repo-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.github-repo-tags span {
  background: rgba(0,167,255,0.08);
  border: 1px solid rgba(0,167,255,0.18);
  color: var(--accent);
  padding: 2px 10px; border-radius: 100px;
  font-size: 0.71rem; font-weight: 500;
}

/* ─── REDUCED MOTION ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in { opacity: 1 !important; transform: none !important; filter: none !important; }
  .marquee-track { animation: none !important; }
  body::before { display: none; }
  .cursor-glow { display: none; }
  .card-expand-body { transition: none !important; }
  .skill-tags-extra { transition: none !important; }
}

/* ─── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
  .philosophy-pillars { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .nav-link { font-size: 0.8rem; padding: 6px 8px; }
  .nav-container { padding: 0 16px; }
}

@media (max-width: 1024px) {
  .skills-grid      { grid-template-columns: repeat(2, 1fr); }
  .projects-grid    { grid-template-columns: repeat(2, 1fr); }
  .certs-grid       { grid-template-columns: repeat(2, 1fr); }
  .certs-featured-row { grid-template-columns: 1fr; }
  .articles-grid    { grid-template-columns: repeat(2, 1fr); }
  .case-cards-row   { grid-template-columns: 1fr; }
  .projects-grid-2  { grid-template-columns: 1fr; }
  .github-grid      { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 70px 0; }
  .section-header { margin-bottom: 40px; }

  #navbar .nav-links {
    display: none;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(228,236,250,0.96);
    backdrop-filter: blur(20px);
    flex-direction: column; padding: 20px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
    z-index: 999;
  }
  #navbar .nav-links.open { display: flex; }
  #navbar .nav-link {
    width: 100%; padding: 12px 16px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }
  .hamburger { display: flex; }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px; text-align: center;
    padding: 40px 24px 60px;
  }
  .hero-right { order: -1; }
  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-expertise { justify-content: center; }
  .float-badge { display: none; }
  .hero-particles { display: none; }

  .about-grid { grid-template-columns: 1fr; text-align: center; gap: 36px; margin-bottom: 36px; }
  .about-avatar-col { flex-direction: column; }
  .about-details { grid-template-columns: 1fr; }

  .philosophy-strip { padding: 24px 20px; }
  .philosophy-pillars { grid-template-columns: 1fr 1fr; gap: 16px; }

  .timeline::before { left: 10px; }
  .timeline-item { padding-left: 36px; }
  .timeline-dot { left: 2px; }
  .timeline-header { flex-direction: column; gap: 8px; }
  .timeline-meta { align-items: flex-start; flex-direction: row; flex-wrap: wrap; gap: 8px; }

  .skills-grid    { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .projects-grid  { grid-template-columns: 1fr; }
  .projects-grid-2 { grid-template-columns: 1fr; }
  .certs-grid     { grid-template-columns: 1fr; }
  .certs-featured-row { grid-template-columns: 1fr; }
  .articles-grid  { grid-template-columns: 1fr; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 36px; }
  .case-cards-row { grid-template-columns: 1fr; }
  .case-card { padding: 24px 20px; }
  .case-card-featured { padding: 24px 20px; }
  .case-pipeline { padding: 12px 14px; gap: 6px; }
  .pipeline-step { font-size: 0.7rem; padding: 5px 10px; }
  .github-grid { grid-template-columns: 1fr; }
  .github-banner { flex-direction: column; align-items: flex-start; }
  .github-stats { gap: 18px; }

  .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; }
}

@media (max-width: 480px) {
  .hero-name { font-size: clamp(2rem, 10vw, 2.8rem); }
  .hero-stats { flex-wrap: wrap; justify-content: center; gap: 12px; }
  .stat-divider { display: none; }
  .stat-card { padding: 0 12px; }
  .skills-grid { grid-template-columns: 1fr; }
  .code-body { font-size: 0.74rem; padding: 16px 18px; }
  .philosophy-pillars { grid-template-columns: 1fr; }
  .case-top { flex-direction: column; }
  .case-stat-badges { flex-direction: column; align-items: flex-start; }
  .case-status { align-self: flex-start; }
  .result-chip { font-size: 0.78rem; padding: 6px 12px; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}