/* ============================================
   PORTFOLIO - Sai Sumanth Reddy Kachi
   Clean Professional Theme + GSAP Animations
   ============================================ */

/* ---------- CSS Variables: LIGHT THEME ---------- */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f8;
  --bg-card: #ffffff;
  --bg-card-hover: #f9f9fb;
  --bg-elevated: #f3f3f5;

  --text-primary: #111111;
  --text-secondary: #555555;
  --text-muted: #888888;

  --accent: #111111;
  --accent-light: #333333;
  --accent-subtle: rgba(0,0,0,0.06);
  --accent-ai: #7c3aed;
  --accent-ai-subtle: rgba(124, 58, 237, 0.08);

  --border-color: #e5e5e5;
  --border-hover: #bbb;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-glow: 0 0 40px rgba(124,58,237,0.12);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --nav-height: 72px;
  --container-max: 1200px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  --navbar-bg: rgba(255,255,255,0.88);
  --mobile-menu-bg: rgba(255,255,255,0.98);
  --selection-bg: rgba(124,58,237,0.12);
  --selection-color: #7c3aed;
  --scrollbar-thumb: rgba(0,0,0,0.15);
  --scrollbar-thumb-hover: rgba(0,0,0,0.3);

  /* Project card accent colors */
  --project-kernel: linear-gradient(135deg, #7c3aed, #4f46e5);
  --project-invenio: linear-gradient(135deg, #2563eb, #0891b2);
  --project-wezaap: linear-gradient(135deg, #059669, #0891b2);
}

/* ---------- DARK THEME ---------- */
[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-card: #161616;
  --bg-card-hover: #1e1e1e;
  --bg-elevated: #1a1a1a;

  --text-primary: #eeeeee;
  --text-secondary: #999999;
  --text-muted: #555555;

  --accent: #eeeeee;
  --accent-light: #cccccc;
  --accent-subtle: rgba(255,255,255,0.06);
  --accent-ai: #a78bfa;
  --accent-ai-subtle: rgba(167, 139, 250, 0.1);

  --border-color: #252525;
  --border-hover: #404040;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(167,139,250,0.1);

  --navbar-bg: rgba(10,10,10,0.90);
  --mobile-menu-bg: rgba(10,10,10,0.98);
  --selection-bg: rgba(167,139,250,0.15);
  --selection-color: #a78bfa;
  --scrollbar-thumb: rgba(255,255,255,0.12);
  --scrollbar-thumb-hover: rgba(255,255,255,0.25);

  --project-kernel: linear-gradient(135deg, #6d28d9, #4338ca);
  --project-invenio: linear-gradient(135deg, #1d4ed8, #0e7490);
  --project-wezaap: linear-gradient(135deg, #047857, #0e7490);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.3s ease, color 0.3s ease;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-color);
}

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: var(--navbar-bg);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  transition: var(--transition-fast);
}

.nav-logo:hover { opacity: 0.7; }

.logo-bracket { color: var(--text-muted); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--accent-ai);
  transform: scaleX(0);
  border-radius: 2px;
  transition: transform 0.25s ease;
}

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link.active {
  color: var(--text-primary);
  font-weight: 600;
}

.nav-link--cta {
  background: var(--accent);
  color: var(--bg-primary) !important;
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 600;
}

.nav-link--cta::after { display: none; }

.nav-link--cta:hover {
  opacity: 0.85;
  background: var(--accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  background: transparent;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--accent-ai);
  color: var(--accent-ai);
  background: var(--accent-ai-subtle);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Custom Cursor ---------- */
.cursor-glow {
  display: none;
  position: fixed;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-ai);
  pointer-events: none;
  z-index: 9999;
  top: 0;
  left: 0;
  transform: translate(-50%, -50%);
  transition: border-color 0.2s ease, background 0.2s ease;
  mix-blend-mode: normal;
}

[data-theme="dark"] .cursor-glow {
  border-color: var(--accent-ai);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--accent-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent-subtle) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* Subtle orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero-orb--1 {
  width: 600px;
  height: 600px;
  background: #7c3aed;
  opacity: 0.05;
  top: -200px;
  right: -100px;
  animation: orbFloat1 8s ease-in-out infinite;
}

.hero-orb--2 {
  width: 400px;
  height: 400px;
  background: #2563eb;
  opacity: 0.04;
  bottom: -100px;
  left: -100px;
  animation: orbFloat2 10s ease-in-out infinite;
}

.hero-orb--3 {
  width: 300px;
  height: 300px;
  background: #059669;
  opacity: 0.03;
  top: 40%;
  left: 40%;
  animation: orbFloat1 12s ease-in-out infinite reverse;
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-20px, 20px); }
}

/* Particles */
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent-ai);
  opacity: 0.3;
  pointer-events: none;
}

/* Hero Split Layout */
.hero-split {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-content {
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--accent-ai-subtle);
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-ai);
  margin-bottom: 28px;
}

[data-theme="dark"] .hero-badge {
  border-color: rgba(167,139,250,0.25);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero-name {
  background: linear-gradient(135deg, var(--accent-ai), #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .hero-name {
  background: linear-gradient(135deg, #a78bfa, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-roles {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  min-height: 36px;
}

.role-text {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.typewriter-cursor {
  color: var(--accent-ai);
  animation: blink 0.8s step-end infinite;
  font-weight: 300;
  font-size: 1.2rem;
}

@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-desc strong {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

/* Hero Image */
.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrapper {
  position: relative;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--border-color);
  z-index: 2;
  background: var(--bg-secondary);
  animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  display: block;
}

.hero-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--bg-secondary);
  color: var(--text-muted);
}

.hero-image-placeholder i {
  font-size: 4rem;
  opacity: 0.3;
}

.hero-image-placeholder span {
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0.5;
}

.hero-image-ring {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1px solid rgba(124,58,237,0.2);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  animation: ringPulse 4s ease-in-out infinite;
}

.hero-image-ring--2 {
  width: 430px;
  height: 430px;
  border-color: rgba(37,99,235,0.1);
  animation: ringPulse 4s ease-in-out infinite 1s;
}

@keyframes ringPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
  50% { transform: translate(-50%, -50%) scale(1.05); opacity: 0.2; }
}

.hero-image-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,0.08) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-main);
  border-radius: 50px;
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-ai), #2563eb);
  color: #ffffff;
}

[data-theme="dark"] .btn--primary {
  background: linear-gradient(135deg, #7c3aed, #3b82f6);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124,58,237,0.35);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}

.btn--outline:hover {
  border-color: var(--accent-ai);
  color: var(--accent-ai);
  transform: translateY(-2px);
  background: var(--accent-ai-subtle);
}

.btn--large {
  padding: 18px 44px;
  font-size: 1.05rem;
}

/* ---------- Social Links ---------- */
.hero-socials {
  display: flex;
  align-items: center;
  gap: 16px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: var(--transition-normal);
}

.social-link:hover {
  color: var(--accent-ai);
  border-color: var(--accent-ai);
  background: var(--accent-ai-subtle);
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(124,58,237,0.2);
}

/* ---------- Scroll Indicator ---------- */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  z-index: 3;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 3px;
  height: 8px;
  background: var(--accent-ai);
  border-radius: 3px;
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(10px); }
}

/* ---------- Sections ---------- */
.section {
  padding: 120px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-ai), #2563eb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .gradient-text {
  background: linear-gradient(135deg, #a78bfa, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ---------- About Section ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.02rem;
}

.about-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-ai), #2563eb);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-card:hover::before { transform: scaleX(1); }

.stat-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  display: inline;
}

.stat-suffix {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-ai);
  display: inline;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
  font-weight: 500;
}

/* ---------- Experience / Timeline ---------- */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

/* Real timeline line (replaces ::before) */
.timeline-line-track {
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
}

.timeline-line-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(180deg, var(--accent-ai), #2563eb);
  border-radius: 2px;
  transition: none;
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 48px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: 12px;
  top: 8px;
}

.timeline-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-ai);
  transition: var(--transition-normal);
  position: relative;
  z-index: 1;
}

.timeline-item:hover .timeline-dot {
  background: var(--accent-ai);
  box-shadow: 0 0 0 4px var(--accent-ai-subtle);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition-normal);
}

.timeline-content:hover {
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(124,58,237,0.1);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.timeline-role {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.timeline-company {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 4px;
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.timeline-date,
.timeline-location {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-points {
  list-style: none;
  margin-bottom: 20px;
}

.timeline-points li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.timeline-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-ai);
  font-weight: 700;
}

.timeline-points li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 4px 14px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-family: var(--font-mono);
  transition: var(--transition-fast);
}

.tag:hover {
  background: var(--accent-ai-subtle);
  border-color: rgba(124,58,237,0.3);
  color: var(--accent-ai);
}

/* ---------- Projects Section ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  will-change: transform;
}

.project-card:hover {
  border-color: rgba(124,58,237,0.3);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(124,58,237,0.08);
}

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.project-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  color: rgba(255,255,255,0.8);
}

.project-image--kernel {
  background: var(--project-kernel);
}

.project-image--invenio {
  background: var(--project-invenio);
}

.project-image--wezaap {
  background: var(--project-wezaap);
}

.project-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-card-body {
  padding: 28px 32px 32px;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.project-tech span {
  padding: 4px 12px;
  background: var(--accent-subtle);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-family: var(--font-mono);
}

.project-highlights {
  list-style: none;
  margin-bottom: 20px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.project-highlights li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.project-highlights li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-ai);
  font-weight: 700;
}

.project-highlights li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.project-actions {
  display: flex;
  gap: 12px;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.project-link-btn:hover {
  border-color: var(--accent-ai);
  color: var(--accent-ai);
  background: var(--accent-ai-subtle);
}

/* ---------- Skills Section ---------- */
.skills-tabs {
  max-width: 900px;
  margin: 0 auto;
}

.skills-tab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}

.skills-tab-btn {
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-main);
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.skills-tab-btn:hover {
  color: var(--accent-ai);
  border-color: rgba(124,58,237,0.4);
  background: var(--accent-ai-subtle);
}

.skills-tab-btn.active {
  background: linear-gradient(135deg, var(--accent-ai), #2563eb);
  color: #ffffff;
  border-color: transparent;
}

.skills-tab-content { position: relative; }

.skills-tab-panel {
  display: none;
}

.skills-tab-panel.active { display: block; }

.skills-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 20px;
}

.skill-icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  cursor: default;
  will-change: transform;
}

.skill-icon-card:hover {
  border-color: rgba(124,58,237,0.35);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(124,58,237,0.08);
  background: var(--bg-card-hover);
}

.skill-icon-card img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.skill-icon-fa {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.skill-icon-card span {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.3;
}

.skill-icon-card:hover span {
  color: var(--accent-ai);
}

/* ---------- Education Section ---------- */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
  gap: 32px;
}

.edu-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.edu-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.edu-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-ai), #2563eb);
}

.edu-card-content {
  padding: 36px;
  display: flex;
  gap: 20px;
}

.edu-icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-ai-subtle);
  border-radius: var(--radius-md);
  font-size: 1.3rem;
  color: var(--accent-ai);
}

.edu-details h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.edu-field {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.edu-school {
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
}

.edu-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.edu-meta span {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.edu-gpa {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.gpa-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.gpa-value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent-ai);
}

.edu-coursework {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.edu-coursework strong {
  color: var(--text-secondary);
}

/* ---------- Recommendations Section ---------- */
.recommendations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
  gap: 32px;
}

.recommendation-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.recommendation-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.recommendation-quote { position: relative; }

.quote-icon {
  color: var(--accent-ai);
  opacity: 0.25;
  font-size: 1.8rem;
  margin-bottom: 16px;
  display: block;
}

.recommendation-quote p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.8;
  font-style: italic;
}

.recommendation-author {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.author-avatar {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-ai), #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--font-display);
}

.author-info h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.author-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.recommendation-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
  display: block;
}

/* ---------- Contact Section ---------- */
.contact-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.contact-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 48px;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  text-align: left;
}

.contact-card:hover {
  border-color: rgba(124,58,237,0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-ai-subtle);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  color: var(--accent-ai);
}

.contact-card-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-card-value {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
  margin-top: 2px;
}

/* ---------- Footer ---------- */
.footer {
  padding: 60px 0 0;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-about .footer-logo-text {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-about h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.footer-about p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-links-col h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links-col a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 6px 0;
  transition: var(--transition-fast);
}

.footer-links-col a:hover {
  color: var(--accent-ai);
  transform: translateX(4px);
}

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ---------- Reveal (GSAP-controlled) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-split {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-content { text-align: center; order: 1; }
  .hero-image { order: 0; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-roles { justify-content: center; }

  .hero-image-wrapper { width: 260px; height: 260px; }
  .hero-image-ring { width: 300px; height: 300px; }
  .hero-image-ring--2 { width: 345px; height: 345px; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-stats { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--mobile-menu-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 4px;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 1px solid var(--border-color);
    z-index: 999;
  }

  .nav-links.open { right: 0; }

  .nav-link {
    font-size: 1rem;
    padding: 12px 16px;
    width: 100%;
    text-align: left;
  }

  .nav-link--cta { text-align: center; margin-top: 16px; }

  .hero { padding: 100px 20px 60px; }
  .hero-title { font-size: clamp(1.8rem, 7vw, 2.8rem); }

  .section { padding: 80px 0; }
  .section-header { margin-bottom: 48px; }

  .about-stats { grid-template-columns: repeat(2, 1fr); }

  .timeline-item { padding-left: 46px; }
  .timeline-marker { left: 6px; }
  .timeline-line-track { left: 14px; }
  .timeline-header { flex-direction: column; }
  .timeline-meta { align-items: flex-start; }
  .timeline-content { padding: 24px; }

  .projects-grid { grid-template-columns: 1fr; }
  .education-grid { grid-template-columns: 1fr; }
  .recommendations-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }

  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .scroll-indicator { display: none; }

  .skills-tab-nav { gap: 6px; }
  .skills-tab-btn { padding: 8px 16px; font-size: 0.8rem; }

  .skills-icon-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 12px; }
  .skill-icon-card { padding: 16px 12px; }
  .skill-icon-card img, .skill-icon-fa { width: 36px; height: 36px; }

  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr 1fr; }
  .edu-card-content { flex-direction: column; }
  .edu-meta { flex-direction: column; gap: 6px; }
  .stat-card { padding: 20px 16px; }
  .stat-number { font-size: 2rem; }
  .hero-image-wrapper { width: 200px; height: 200px; }
  .hero-image-ring { width: 240px; height: 240px; }
  .hero-image-ring--2 { width: 280px; height: 280px; }
  .cursor-glow { display: none !important; }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }