/* ============================================================
   🎨 PORTFOLIO STYLESHEET
   ============================================================
   A modern, minimal portfolio design inspired by landonorris.com.
   Features: smooth scroll reveals, dark mode, sticky nav,
   bold typography, and a lime-green accent color.
   ============================================================ */

/* ============================================================
   CSS VARIABLES — Design Tokens
   ============================================================ */
:root {
  /* Colors — Light Theme */
  --bg-primary: #fafafa;
  --bg-secondary: #f0f0f0;
  --bg-card: #ffffff;
  --bg-dark-section: #0a0a0a;
  --text-primary: #0a0a0a;
  --text-secondary: #555555;
  --text-muted: #999999;
  --text-on-dark: #fafafa;
  --border-color: rgba(10, 10, 10, 0.08);
  --border-hover: rgba(10, 10, 10, 0.15);

  /* Accent — Updated dynamically from data.js */
  --accent: #c8ff00;
  --accent-dark: #a8d900;
  --accent-glow: rgba(200, 255, 0, 0.15);
  --accent-text: #0a0a0a;

  /* Typography */
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", "Inter", sans-serif;

  /* Spacing */
  --section-padding: 120px 0;
  --container-width: 1200px;
  --container-padding: 0 clamp(20px, 5vw, 80px);

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fast: 0.2s var(--ease-out-quart);
  --transition-medium: 0.4s var(--ease-out-expo);
  --transition-slow: 0.8s var(--ease-out-expo);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.1), 0 8px 20px rgba(0,0,0,0.06);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-card: #1a1a1a;
  --bg-dark-section: #000000;
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --text-on-dark: #f0f0f0;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --accent-text: #0a0a0a;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.5);
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.5s var(--ease-out-expo),
              color 0.5s var(--ease-out-expo);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* ============================================================
   PRELOADER
   ============================================================ */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 30px;
  transition: transform 0.8s var(--ease-out-expo);
}

#preloader.done {
  transform: translateY(-100%);
  pointer-events: none;
}

.preloader-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.preloader-hello,
.preloader-world {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 800;
  color: #0a0a0a;
  letter-spacing: -0.02em;
  line-height: 1;
}

.preloader-world {
  opacity: 0.4;
}

.preloader-bar {
  width: 200px;
  height: 3px;
  background: rgba(0,0,0,0.15);
  border-radius: 10px;
  overflow: hidden;
}

.preloader-bar-fill {
  height: 100%;
  width: 0%;
  background: #0a0a0a;
  border-radius: 10px;
  animation: preloaderFill 1.5s var(--ease-out-expo) forwards;
}

@keyframes preloaderFill {
  to { width: 100%; }
}

/* ============================================================
   CUSTOM CURSOR (desktop only)
   ============================================================ */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, background 0.3s;
  mix-blend-mode: difference;
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, border-color 0.3s, opacity 0.3s;
  opacity: 0.5;
}

.cursor-dot.hovering {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  mix-blend-mode: normal;
}

.cursor-ring.hovering {
  width: 48px;
  height: 48px;
  opacity: 0;
}

/* Hide cursor on touch devices */
@media (hover: none) {
  .cursor-dot, .cursor-ring {
    display: none !important;
  }
}

/* ============================================================
   NAVIGATION BAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 clamp(20px, 5vw, 80px);
  transition: all var(--transition-medium);
}

.navbar.scrolled {
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(10, 10, 10, 0.85);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.nav-link.active {
  color: var(--accent-text);
  background: var(--accent);
}

/* Theme Toggle */
.theme-toggle {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.theme-icon {
  width: 20px;
  height: 20px;
  position: absolute;
  transition: all var(--transition-medium);
}

.theme-icon.sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-icon.moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  z-index: 1002;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-medium);
  transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 1001;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.mobile-nav-links a {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  padding: 8px 24px;
  border-radius: var(--radius-md);
  transition: all var(--transition-medium);
  transform: translateY(30px);
  opacity: 0;
}

.mobile-menu.active .mobile-nav-links a {
  transform: translateY(0);
  opacity: 1;
}

/* Stagger the animation */
.mobile-nav-links a:nth-child(1) { transition-delay: 0.05s; }
.mobile-nav-links a:nth-child(2) { transition-delay: 0.1s; }
.mobile-nav-links a:nth-child(3) { transition-delay: 0.15s; }
.mobile-nav-links a:nth-child(4) { transition-delay: 0.2s; }
.mobile-nav-links a:nth-child(5) { transition-delay: 0.25s; }

.mobile-nav-links a:hover {
  color: var(--accent-text);
  background: var(--accent);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px clamp(20px, 5vw, 80px) 80px;
}

/* Animated background shapes (like Lando's topographic design) */
.hero-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  animation: floatShape 20s infinite ease-in-out;
}

.shape-1 {
  width: 600px;
  height: 600px;
  top: -10%;
  right: -10%;
  animation-duration: 25s;
}

.shape-2 {
  width: 400px;
  height: 400px;
  bottom: -5%;
  left: -5%;
  animation-duration: 20s;
  animation-delay: -5s;
}

.shape-3 {
  width: 250px;
  height: 250px;
  top: 30%;
  left: 20%;
  animation-duration: 15s;
  animation-delay: -10s;
}

@keyframes floatShape {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(30px, -30px) rotate(5deg); }
  50% { transform: translate(-20px, 20px) rotate(-3deg); }
  75% { transform: translate(15px, 10px) rotate(2deg); }
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  z-index: 1;
}

.hero-greeting {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.hero-wave {
  display: inline-block;
  animation: wave 2.5s infinite;
  transform-origin: 70% 70%;
}

@keyframes wave {
  0%, 60%, 100% { transform: rotate(0deg); }
  10% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  30% { transform: rotate(14deg); }
  40% { transform: rotate(-4deg); }
  50% { transform: rotate(10deg); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text-primary) 40%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  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: 0.1em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.3; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-xl);
  transition: all var(--transition-medium);
  cursor: pointer;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  box-shadow: 0 4px 20px var(--accent-glow);
}

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

.btn-primary svg {
  transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
  transform: translate(3px, -3px);
}

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

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

/* ============================================================
   SECTION SHARED STYLES
   ============================================================ */
.section {
  padding: var(--section-padding);
  position: relative;
}

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

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.section-number {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.section-title-small {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 48px;
}

.accent-text {
  color: var(--accent);
  /* Make accent text readable on light backgrounds */
  filter: brightness(0.65) saturate(1.2);
}

[data-theme="dark"] .accent-text {
  filter: none;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  white-space: pre-line;
}

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

.highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-medium);
}

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

.highlight-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.highlight-value {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee-container {
  padding: 40px 0;
  overflow: hidden;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 40px;
  padding-right: 40px;
  white-space: nowrap;
}

.marquee-item {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  opacity: 0.15;
  letter-spacing: -0.02em;
  user-select: none;
}

.marquee-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================================
   SKILLS SECTION
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-medium);
  cursor: default;
}

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

.skill-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  filter: brightness(0.65);
}

[data-theme="dark"] .skill-icon {
  filter: none;
}

.skill-info {
  flex: 1;
}

.skill-name {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.skill-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  width: 0%;
  transition: width 1.2s var(--ease-out-expo);
}

.skill-card.in-view .skill-bar-fill {
  /* Width set inline via JS */
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all var(--transition-medium);
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-medium);
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

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

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.project-folder-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  filter: brightness(0.65);
}

[data-theme="dark"] .project-folder-icon {
  filter: none;
}

.project-links {
  display: flex;
  gap: 8px;
}

.project-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.project-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.project-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.project-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.02em;
}

/* ============================================================
   EDUCATION SECTION
   ============================================================ */
.education-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 32px;
}

.education-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--border-color);
}

.education-item {
  position: relative;
  padding: 24px 0 24px 32px;
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-medium);
}

.education-item:last-child {
  border-bottom: none;
}

.education-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 32px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2.5px solid var(--accent);
  background: var(--bg-primary);
  transition: all var(--transition-fast);
  z-index: 1;
}

.education-item:hover::before {
  background: var(--accent);
  box-shadow: 0 0 0 6px var(--accent-glow);
}

.education-duration {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  filter: brightness(0.65);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

[data-theme="dark"] .education-duration {
  filter: none;
}

.education-degree {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.education-institution {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.education-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-section {
  background: var(--bg-dark-section);
  color: var(--text-on-dark);
  /* Override variables for dark context */
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --border-color: rgba(255,255,255,0.08);
}

.contact-content {
  max-width: 600px;
}

.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 24px;
}

.contact-heading .accent-text {
  filter: none;
}

.contact-subtext {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 600;
  color: var(--accent);
  padding: 16px 0;
  border-bottom: 2px solid rgba(200, 255, 0, 0.2);
  margin-bottom: 48px;
  transition: all var(--transition-medium);
}

.contact-email:hover {
  border-bottom-color: var(--accent);
}

.contact-email svg {
  transition: transform var(--transition-fast);
}

.contact-email:hover svg {
  transform: translate(4px, -4px);
}

.social-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 500;
  color: #a0a0a0;
  transition: all var(--transition-medium);
}

.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(200, 255, 0, 0.1);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-dark-section);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 32px clamp(20px, 5vw, 80px);
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-text {
  font-size: 0.85rem;
  color: #666;
}

.footer-heart {
  color: var(--accent);
}

.footer-year {
  font-size: 0.85rem;
  color: #666;
}

/* ============================================================
   REVEAL ANIMATIONS (Intersection Observer)
   ============================================================ */

/* Slide up + fade in */
.reveal-up {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.8s var(--ease-out-expo),
              transform 0.8s var(--ease-out-expo);
}

.reveal-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children reveal */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s var(--ease-out-expo),
              transform 0.6s var(--ease-out-expo);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.08s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.16s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.24s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.32s; }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.4s; }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: 0.48s; }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: 0.56s; }

.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* Hero text reveal — slide up with mask */
.reveal-text {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo),
              transform 0.8s var(--ease-out-expo);
}

.reveal-text.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .hero-name {
    font-size: clamp(2.5rem, 12vw, 5rem);
  }

  .section-heading {
    font-size: clamp(1.8rem, 6vw, 2.8rem);
  }

  .footer-container {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 600px) {
  :root {
    --section-padding: 80px 0;
  }

  .nav-container {
    height: 60px;
  }

  .hero {
    padding: 100px 20px 60px;
    min-height: 90vh;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

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

  .about-highlights {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .contact-heading {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .social-links {
    flex-direction: column;
  }

  .social-link {
    justify-content: center;
  }

  .hero-scroll-indicator {
    display: none;
  }

  .education-timeline {
    padding-left: 24px;
  }

  .education-item {
    padding-left: 24px;
  }
}

/* ============================================================
   UTILITY: Smooth selection color
   ============================================================ */
::selection {
  background: var(--accent);
  color: var(--accent-text);
}

::-moz-selection {
  background: var(--accent);
  color: var(--accent-text);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}