/* =============================================
   EXHORTE MBOUMBA — PORTFOLIO PREMIUM
   Dark Mode by Default | Full Responsive
   ============================================= */

/* ---- CSS VARIABLES ---- */
:root {
  /* Dark Mode (default) */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --bg-glass: rgba(17,17,17,0.85);

  --text-primary: #f5f5f5;
  --text-secondary: #a3a3a3;
  --text-muted: #6b7280;

  --accent: #ef4444;
  --accent-hover: #dc2626;
  --accent-glow: rgba(239,68,68,0.25);
  --accent-subtle: rgba(239,68,68,0.1);

  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(239,68,68,0.4);

  --gradient-text: linear-gradient(135deg, #ef4444 0%, #f97316 50%, #ef4444 100%);
  --gradient-bg: linear-gradient(135deg, rgba(239,68,68,0.15) 0%, rgba(249,115,22,0.1) 100%);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px rgba(239,68,68,0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.6s cubic-bezier(0.4,0,0.2,1);

  --navbar-height: 72px;
  --font-main: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* LIGHT MODE */
[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f3f5;
  --bg-card: rgba(0,0,0,0.03);
  --bg-card-hover: rgba(0,0,0,0.06);
  --bg-glass: rgba(248,249,250,0.92);

  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #9ca3af;

  --accent: #ef4444;
  --accent-hover: #dc2626;
  --accent-glow: rgba(239,68,68,0.2);
  --accent-subtle: rgba(239,68,68,0.08);

  --border: rgba(0,0,0,0.08);
  --border-hover: rgba(239,68,68,0.4);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
  --shadow-glow: 0 0 30px rgba(239,68,68,0.1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

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

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

/* ---- SELECTION ---- */
::selection { background: var(--accent); color: #fff; }

/* =============================================
   UTILITIES
   ============================================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: inherit;
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
}

.btn-full { width: 100%; justify-content: center; }

/* ---- SECTION LAYOUT ---- */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid rgba(239,68,68,0.2);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-line {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 0 auto 1rem;
  border-radius: 2px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* =============================================
   LOADER
   ============================================= */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}

.loader.hidden { opacity: 0; visibility: hidden; }

.loader-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.loader-logo {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: pulse 1s ease infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.loader-progress {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  animation: loadProgress 1.5s ease forwards;
}

@keyframes loadProgress {
  0% { width: 0%; }
  100% { width: 100%; }
}

.loader-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.navbar.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border), var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: color var(--transition);
}

.nav-logo:hover { color: var(--accent); }

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: transform var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after { transform: translateX(-50%) scaleX(1); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle */
.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

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

.toggle-icon {
  position: absolute;
  transition: all var(--transition);
  line-height: 1;
}

/* Dark mode: show moon, hide sun */
[data-theme="dark"] .toggle-icon.sun { opacity: 0; transform: rotate(90deg) scale(0.5); }
[data-theme="dark"] .toggle-icon.moon { opacity: 1; transform: rotate(0) scale(1); }

/* Light mode: show sun, hide moon */
[data-theme="light"] .toggle-icon.sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .toggle-icon.moon { opacity: 0; transform: rotate(-90deg) scale(0.5); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

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

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--navbar-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 8s ease-in-out infinite;
}

.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(239,68,68,0.15) 0%, transparent 70%);
  top: -150px; right: -100px;
  animation-duration: 10s;
}

.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.1) 0%, transparent 70%);
  bottom: -100px; left: -50px;
  animation-duration: 12s;
  animation-delay: -3s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(239,68,68,0.08) 0%, transparent 70%);
  top: 40%; left: 30%;
  animation-duration: 15s;
  animation-delay: -6s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -30px) scale(1.05); }
  66% { transform: translate(-15px, 20px) scale(0.95); }
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--accent-subtle);
  border: 1px solid rgba(239,68,68,0.25);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: badgePulse 2s ease infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 8px #22c55e; }
  50% { box-shadow: 0 0 16px #22c55e, 0 0 24px rgba(34,197,94,0.4); }
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 0.75rem;
  display: flex;
  flex-direction: column;
}

.name-first { color: var(--text-primary); }
.name-last {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
}

.hero-title-wrapper {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  min-height: 2rem;
}

.hero-title-static { color: var(--text-secondary); }

.hero-title-dynamic {
  color: var(--accent);
  font-family: var(--font-mono);
}

.typing-cursor {
  color: var(--accent);
  animation: blink 1s step-start infinite;
  font-weight: 300;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 500px;
  margin-bottom: 1.25rem;
}

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

.hero-location {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.hero-location i { color: var(--accent); font-size: 0.85rem; }

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.hero-social {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-avatar-wrapper {
  position: relative;
  width: 360px;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  animation: ringRotate 20s linear infinite;
}

.ring-1 {
  width: 100%; height: 100%;
  border-color: rgba(239,68,68,0.2);
  border-top-color: rgba(239,68,68,0.5);
}

.ring-2 {
  width: 85%; height: 85%;
  border-color: rgba(249,115,22,0.15);
  border-right-color: rgba(249,115,22,0.4);
  animation-direction: reverse;
  animation-duration: 15s;
}

.ring-3 {
  width: 70%; height: 70%;
  border-color: rgba(239,68,68,0.1);
  border-bottom-color: rgba(239,68,68,0.3);
  animation-duration: 25s;
}

@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-avatar {
  width: 55%;
  height: 55%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #f97316 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(239,68,68,0.1);
  z-index: 1;
  position: relative;
}

.avatar-placeholder {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -0.05em;
  border: 3px solid var(--accent);
  font-family: var(--font-mono);
  margin: 3px;
  border-radius: 50%;
}

/* Floating Cards */
.float-card {
  position: absolute;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  animation: floatCard 5s ease-in-out infinite;
  z-index: 2;
  white-space: nowrap;
}

.float-card i { font-size: 1.2rem; }
.float-card.card-react { top: 8%; right: -10%; animation-delay: 0s; }
.float-card.card-spring { bottom: 15%; right: -5%; animation-delay: -1.5s; }
.float-card.card-next { top: 50%; left: -15%; animation-delay: -3s; }
.float-card.card-docker { bottom: 5%; left: 5%; animation-delay: -4.5s; }

@keyframes floatCard {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  z-index: 1;
  animation: scrollBounce 2s ease infinite;
}

.scroll-mouse {
  width: 22px; height: 34px;
  border: 2px solid var(--text-muted);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

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

@keyframes scrollWheel {
  0%, 100% { transform: translateY(0); opacity: 1; }
  80% { transform: translateY(10px); opacity: 0; }
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* =============================================
   ABOUT SECTION
   ============================================= */
.about-section { background: var(--bg-secondary); }

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: start;
}

.about-intro {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.about-body {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.about-body em { color: var(--accent); font-style: normal; font-weight: 500; }
.about-body strong { color: var(--text-primary); }

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.highlight-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.highlight-item:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.highlight-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  border: 1px solid rgba(239,68,68,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
  flex-shrink: 0;
}

.highlight-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 0.1rem;
}

.highlight-item span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Stats */
.about-stats { display: flex; flex-direction: column; gap: 1.5rem; }

.stats-card {
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 1.25rem 1rem;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -0.04em;
  display: block;
  line-height: 1;
}

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

.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.3rem;
}

.stat-divider {
  width: 1px;
  background: var(--border);
  grid-row: 1 / span 2;
}

.education-card {
  padding: 1.5rem;
}

.education-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.education-card h3 i { color: var(--accent); }

.edu-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: flex-start;
}

.edu-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 0.25rem;
  flex-shrink: 0;
  box-shadow: 0 0 10px var(--accent-glow);
}

.edu-dot-past { background: var(--border); box-shadow: none; }

.edu-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 600;
}

.edu-item span {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.1rem;
}

.edu-school {
  font-style: italic;
  color: var(--text-muted) !important;
}

/* =============================================
   STACK SECTION (Marquee)
   ============================================= */
.stack-section {
  padding-bottom: 0;
  overflow: hidden;
}

.stack-section .container { margin-bottom: 3rem; }

.marquee-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 1rem 0;
  margin-bottom: 0.75rem;
}

/* Fade edges */
.marquee-wrapper::before,
.marquee-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.marquee-wrapper::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-primary), transparent);
}

.marquee-wrapper::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-primary), transparent);
}

.about-section + .stack-section .marquee-wrapper::before { background: linear-gradient(to right, var(--bg-primary), transparent); }

.marquee-inner {
  display: flex;
  gap: 1rem;
  animation: marqueeScroll 35s linear infinite;
  width: max-content;
}

.marquee-reverse .marquee-inner {
  animation: marqueeScrollReverse 40s linear infinite;
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes marqueeScrollReverse {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}

.marquee-wrapper:hover .marquee-inner { animation-play-state: paused; }

.tech-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.7rem 1.2rem;
  white-space: nowrap;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition);
  cursor: default;
}

.tech-badge:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

.tech-badge i { font-size: 1.4rem; }

.tech-badge.outline {
  background: transparent;
  border-style: dashed;
  border-color: var(--border);
}

.tech-badge.outline:hover {
  border-style: solid;
  border-color: var(--accent);
}

/* =============================================
   PROJECTS SECTION
   ============================================= */
.projects-section { background: var(--bg-secondary); }

.projects-filter {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  transition: all var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.project-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.project-card:hover { transform: translateY(-8px); }

/* Project Mockup Visuals */
.project-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--bg-tertiary);
}

.project-mockup {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  font-size: 0.65rem;
}

.mockup-header {
  background: #1e1e2e;
  padding: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mockup-dots { display: flex; gap: 4px; }
.mockup-dots span {
  width: 8px; height: 8px;
  border-radius: 50%;
}
.mockup-dots span:nth-child(1) { background: #ff5f57; }
.mockup-dots span:nth-child(2) { background: #febc2e; }
.mockup-dots span:nth-child(3) { background: #28c840; }

.mockup-url {
  background: rgba(255,255,255,0.07);
  padding: 2px 10px;
  border-radius: 4px;
  color: #9ca3af;
  font-size: 0.6rem;
  flex: 1;
}

/* Banking Mockup */
.banking-mockup .mockup-body {
  display: flex;
  flex: 1;
  background: #0f1117;
  overflow: hidden;
}

.mockup-sidebar {
  width: 40px;
  background: #161622;
  padding: 0.5rem 0.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border-right: 1px solid rgba(255,255,255,0.05);
}

.sidebar-item {
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.1);
}
.sidebar-item.active { background: #ef4444; }

.mockup-content {
  flex: 1;
  padding: 0.5rem 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mockup-balance {
  background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  border-radius: 6px;
  padding: 0.5rem;
}

.balance-label {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 0.5rem;
}

.balance-amount {
  display: block;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
}

.mockup-chart {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 30px;
  background: rgba(255,255,255,0.03);
  border-radius: 4px;
  padding: 4px;
}

.chart-bar {
  flex: 1;
  background: rgba(239,68,68,0.6);
  border-radius: 2px 2px 0 0;
  transition: background var(--transition);
}

.project-card:hover .chart-bar { background: rgba(239,68,68,0.9); }

.mockup-transactions { display: flex; flex-direction: column; gap: 0.25rem; }

.tx-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  padding: 0.3rem 0.4rem;
  font-size: 0.55rem;
}

.tx-icon {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tx-icon.bank { background: #ef4444; }
.tx-icon.shop { background: #3b82f6; }
.tx-amount { margin-left: auto; font-weight: 600; }
.tx-amount.pos { color: #22c55e; }
.tx-amount.neg { color: #ef4444; }

/* E-commerce Mockup */
.ecommerce-mockup .ecom-body {
  background: #0f1117;
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0.4rem;
  gap: 0.3rem;
}

.ecom-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 0.3rem;
}

.ecom-nav-item {
  width: 30px; height: 5px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
}

.ecom-cart {
  margin-left: auto;
  color: var(--accent);
  font-size: 0.7rem;
  position: relative;
}

.ecom-cart span {
  position: absolute;
  top: -4px; right: -4px;
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  font-size: 0.45rem;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ecom-products {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.3rem;
  flex: 1;
}

.ecom-product {
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  overflow: hidden;
}

.product-img {
  height: 45px;
  background: linear-gradient(135deg, rgba(239,68,68,0.2) 0%, rgba(249,115,22,0.2) 100%);
}

.product-info { padding: 0.25rem; }
.product-name {
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  margin-bottom: 0.2rem;
}

.product-price { font-size: 0.5rem; color: #ef4444; font-weight: 600; }

/* Reservation Mockup */
.reservation-mockup .res-body {
  background: #0f1117;
  flex: 1;
  display: flex;
  gap: 0.4rem;
  padding: 0.5rem;
}

.res-calendar { flex: 2; }

.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.3rem;
  font-size: 0.55rem;
  color: var(--text-secondary);
}

.cal-nav { display: flex; gap: 0.3rem; color: var(--text-muted); font-size: 0.5rem; }

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
}

.cal-day {
  font-size: 0.45rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1px 0;
}

.cal-cell {
  font-size: 0.45rem;
  color: var(--text-secondary);
  text-align: center;
  padding: 2px 1px;
  border-radius: 2px;
}

.cal-cell.active { background: var(--accent); color: #fff; }
.cal-cell.selected { background: rgba(239,68,68,0.3); color: var(--accent); }

.res-slots {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  justify-content: center;
}

.slot {
  padding: 0.25rem 0.4rem;
  border-radius: 4px;
  font-size: 0.5rem;
  text-align: center;
  font-weight: 600;
}

.slot.available { background: rgba(34,197,94,0.2); color: #22c55e; }
.slot.booked { background: rgba(239,68,68,0.2); color: #ef4444; }

/* Project overlay */
.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.8) 100%);
}

.featured-badge {
  position: absolute;
  top: 12px; right: 12px;
  background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  color: #fff;
  padding: 0.2rem 0.7rem;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Project Content */
.project-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  background: var(--accent-subtle);
  color: var(--accent);
  border: 1px solid rgba(239,68,68,0.2);
  font-family: var(--font-mono);
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.project-features {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
  flex: 1;
}

.project-features li {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-features li i { color: #22c55e; font-size: 0.7rem; }

.project-links {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
}

/* =============================================
   SERVICES SECTION
   ============================================= */
.services-section { background: var(--bg-primary); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  padding: 2rem;
  position: relative;
  overflow: hidden;
  cursor: default;
}

.service-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  border: 1px solid rgba(239,68,68,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
  transition: all var(--transition);
}

.service-card:hover .service-icon {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px var(--accent-glow);
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.service-list li {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-list li::before {
  content: '→';
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
}

.service-hover-effect {
  position: absolute;
  bottom: -100px; right: -100px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  transition: all 0.5s ease;
  pointer-events: none;
}

.service-card:hover .service-hover-effect {
  bottom: -50px; right: -50px;
  width: 250px; height: 250px;
}

/* CTA Service Card */
.service-cta-card {
  background: linear-gradient(135deg, rgba(239,68,68,0.08) 0%, rgba(249,115,22,0.05) 100%);
  border-color: rgba(239,68,68,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-cta-content { text-align: center; }
.service-cta-content h3 { margin-bottom: 0.75rem; }
.service-cta-content p { margin-bottom: 1.25rem; }

/* =============================================
   SKILLS SECTION
   ============================================= */
.skills-section { background: var(--bg-secondary); }

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.skills-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skills-col-title i { color: var(--accent); }

.skill-item { margin-bottom: 1.25rem; }

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.skill-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-name i { font-size: 1rem; }

.skill-percent {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
}

.skill-bar {
  height: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #f97316 100%);
  border-radius: 3px;
  width: 0%;
  transition: width 1.5s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Soft Skills Grid */
.soft-skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.soft-skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 0.75rem;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}

.soft-skill-card:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  transform: translateY(-3px);
}

.soft-skill-card i {
  font-size: 1.3rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.4rem;
}

.soft-skill-card span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Methodology */
.methodology-list { display: flex; flex-direction: column; gap: 0.75rem; }

.method-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 0.85rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.method-item:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.method-icon {
  color: var(--accent);
  font-size: 1rem;
  margin-top: 0.1rem;
  flex-shrink: 0;
}

.method-item strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.method-item p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* =============================================
   CONTACT SECTION
   ============================================= */
.contact-section { background: var(--bg-primary); }

.contact-subtitle {
  font-size: 1.2rem !important;
  font-style: italic;
  color: var(--accent) !important;
  font-weight: 600;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-card, .contact-links {
  padding: 1.5rem;
}

.contact-card h3, .contact-links h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.availability-list { display: flex; flex-direction: column; gap: 0.75rem; }

.avail-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.avail-item i {
  width: 30px; height: 30px;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.8rem;
}

.contact-social-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.contact-social-link:last-child { border-bottom: none; }

.contact-social-link:hover { padding-left: 0.5rem; }
.contact-social-link:hover .cs-arrow { color: var(--accent); transform: translateX(4px); }

.cs-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
  flex-shrink: 0;
  transition: all var(--transition);
}

.cs-icon.github { background: rgba(88,96,105,0.15); color: #e6edf3; }
.cs-icon.linkedin { background: rgba(10,102,194,0.15); color: #0a66c2; }

.contact-social-link:hover .cs-icon {
  background: var(--accent-subtle);
  border-color: var(--accent);
  color: var(--accent);
}

.contact-social-link strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.contact-social-link span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.cs-arrow {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

/* Contact Form */
.contact-form {
  padding: 2rem;
}

.contact-form h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.input-wrapper {
  position: relative;
}

.input-wrapper i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
  pointer-events: none;
  transition: color var(--transition);
}

.input-wrapper input,
.textarea-wrapper textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.9rem;
  transition: all var(--transition);
  outline: none;
}

.textarea-wrapper textarea {
  padding: 0.75rem 1rem;
  resize: vertical;
  min-height: 120px;
}

.input-wrapper input:focus,
.textarea-wrapper textarea:focus {
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

.input-wrapper input:focus ~ i,
.input-wrapper:focus-within i { color: var(--accent); }

.input-wrapper input::placeholder,
.textarea-wrapper textarea::placeholder { color: var(--text-muted); }

.form-error {
  display: block;
  font-size: 0.75rem;
  color: #ef4444;
  margin-top: 0.3rem;
  min-height: 1rem;
}

.form-success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: var(--radius-md);
  padding: 1rem;
  color: #22c55e;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 1rem;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 0 1.5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.footer-tagline {
  font-size: 0.8rem;
  font-style: italic;
  color: var(--accent) !important;
  margin-top: 0.25rem !important;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-col a {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* =============================================
   BACK TO TOP
   ============================================= */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 20px var(--accent-glow);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

/* =============================================
   SCROLL ANIMATIONS
   ============================================= */
[data-animate] {
  opacity: 0;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-animate="fade-up"] { transform: translateY(40px); }
[data-animate="fade-right"] { transform: translateX(-40px); }
[data-animate="fade-left"] { transform: translateX(40px); }

[data-animate].animated {
  opacity: 1;
  transform: translate(0) !important;
}

/* Project card delays */
.project-card[data-delay="100"] { transition-delay: 0.1s; }
.project-card[data-delay="200"] { transition-delay: 0.2s; }
.service-card[data-delay="100"] { transition-delay: 0.1s; }
.service-card[data-delay="200"] { transition-delay: 0.2s; }
.service-card[data-delay="300"] { transition-delay: 0.3s; }
.service-card[data-delay="400"] { transition-delay: 0.4s; }
.service-card[data-delay="500"] { transition-delay: 0.5s; }

/* =============================================
   RESPONSIVE — TABLET
   ============================================= */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { display: none; }
  .hero-cta, .hero-social, .hero-badge, .hero-location { justify-content: center; }
  .hero-tagline { max-width: 600px; margin-left: auto; margin-right: auto; }

  .about-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-highlights { grid-template-columns: 1fr 1fr; }
}

/* =============================================
   RESPONSIVE — MOBILE
   ============================================= */
@media (max-width: 768px) {
  .section { padding: 4rem 0; }

  /* Navbar mobile */
  .nav-links {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    transform: translateY(-100%) translateY(calc(-1 * var(--navbar-height)));
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
    font-size: 1rem;
  }

  .hamburger { display: flex; }

  /* Hero */
  .hero-name { font-size: 2.5rem; }
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-cta .btn { width: 100%; max-width: 280px; justify-content: center; }

  /* About */
  .about-highlights { grid-template-columns: 1fr; }
  .stats-card { grid-template-columns: 1fr 1fr; }

  /* Stack */
  .marquee-wrapper::before,
  .marquee-wrapper::after { width: 60px; }

  /* Projects */
  .projects-grid { grid-template-columns: 1fr; }
  .projects-filter { gap: 0.5rem; }

  /* Services */
  .services-grid { grid-template-columns: 1fr; }

  /* Skills */
  .soft-skills-grid { grid-template-columns: repeat(2, 1fr); }

  /* Contact */
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-top { flex-direction: column; gap: 2rem; }
  .footer-links { flex-direction: column; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }

  /* Back to top */
  .back-to-top { bottom: 1.5rem; right: 1.5rem; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2rem; }
  .section-title { font-size: 1.8rem; }
  .stats-card { grid-template-columns: 1fr; }
  .stat-divider { display: none; }
  .float-card { display: none; }
}

/* =============================================
   LIGHT MODE ADJUSTMENTS
   ============================================= */
[data-theme="light"] .mockup-header { background: #e5e7eb; }
[data-theme="light"] .banking-mockup .mockup-body { background: #f9fafb; }
[data-theme="light"] .mockup-sidebar { background: #f3f4f6; }
[data-theme="light"] .mockup-content { color: #374151; }
[data-theme="light"] .tx-item { background: rgba(0,0,0,0.04); }
[data-theme="light"] .ecommerce-mockup .ecom-body { background: #f9fafb; }
[data-theme="light"] .reservation-mockup .res-body { background: #f9fafb; }
[data-theme="light"] .cal-day, [data-theme="light"] .cal-cell { color: #6b7280; }
[data-theme="light"] .hero-grid {
  background-image:
    linear-gradient(rgba(0,0,0,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.06) 1px, transparent 1px);
}
[data-theme="light"] .avatar-placeholder {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

/* ---- PARTICLES ---- */
.particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  animation: particleFall linear infinite;
}

@keyframes particleFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}