/* ═══════════════════════════════════════════════════
   SCI-FI PORTFOLIO — DESIGN SYSTEM
   Author: Rohith Ramachandran
   ═══════════════════════════════════════════════════ */

/* ─── GOOGLE FONTS ─── */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500;600&display=swap');

/* ─── CSS CUSTOM PROPERTIES ─── */
:root {
  /* Colors */
  --bg-primary: #0a0a1a;
  --bg-secondary: #0d0d2b;
  --bg-card: rgba(13, 13, 43, 0.7);
  --bg-glass: rgba(0, 240, 255, 0.03);
  --border-glow: rgba(0, 240, 255, 0.15);

  --cyan: #00f0ff;
  --blue: #0066ff;
  --magenta: #ff00aa;
  --green: #39ff14;
  --purple: #a855f7;
  --orange: #ff6b00;
  --white: #e8f0fe;
  --gray: #8899aa;
  --dark-gray: #2a2a4a;

  /* Typography */
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --section-padding: 120px 60px;
  --card-padding: 30px;
  --border-radius: 12px;

  /* Shadows & Glows */
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3), 0 0 60px rgba(0, 240, 255, 0.1);
  --glow-blue: 0 0 20px rgba(0, 102, 255, 0.3), 0 0 60px rgba(0, 102, 255, 0.1);
  --glow-magenta: 0 0 20px rgba(255, 0, 170, 0.3);
  --glow-text: 0 0 10px rgba(0, 240, 255, 0.5), 0 0 20px rgba(0, 240, 255, 0.3);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan) var(--bg-primary);
}

html::-webkit-scrollbar {
  width: 6px;
}

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

html::-webkit-scrollbar-thumb {
  background: var(--cyan);
  border-radius: 3px;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  background: var(--bg-primary);
  color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  letter-spacing: 0.5px;
}

::selection {
  background: rgba(0, 240, 255, 0.3);
  color: var(--white);
}

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

a:hover {
  color: var(--white);
  text-shadow: var(--glow-text);
}

img {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

/* ─── TYPOGRAPHY ─── */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
}

h4 {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
}

.text-cyan {
  color: var(--cyan);
}

.text-magenta {
  color: var(--magenta);
}

.text-green {
  color: var(--green);
}

.text-gray {
  color: var(--gray);
}

.text-mono {
  font-family: var(--font-mono);
}

/* ─── PRELOADER ─── */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.loaded {
  opacity: 0;
  visibility: hidden;
}

.preloader-content {
  text-align: center;
}

.preloader-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--cyan);
  letter-spacing: 8px;
  text-transform: uppercase;
  animation: glitch-text 2s infinite;
}

.preloader-bar {
  width: 200px;
  height: 2px;
  background: var(--dark-gray);
  margin: 20px auto 0;
  border-radius: 2px;
  overflow: hidden;
}

.preloader-bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: preloader-scan 1.5s ease-in-out infinite;
}

@keyframes preloader-scan {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(500%);
  }
}

/* ─── TOP NAVIGATION BAR ─── */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 64px;
  background: rgba(10, 10, 26, 0.6);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glow);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

.top-nav.scrolled {
  background: rgba(10, 10, 26, 0.92);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.top-nav-logo a {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 2px;
}

.top-nav-logo a:hover {
  color: var(--cyan);
  text-shadow: var(--glow-text);
}

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

.top-nav-links li a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 8px 14px;
  border-radius: 4px;
  transition: var(--transition-fast);
  position: relative;
}

.top-nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}

.top-nav-links li a:hover,
.top-nav-links li a.active {
  color: var(--cyan);
}

.top-nav-links li a:hover::after,
.top-nav-links li a.active::after {
  transform: scaleX(1);
}

/* ─── MOBILE NAV ─── */
.mobile-nav {
  display: none;
}

.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1001;
  width: 44px;
  height: 44px;
  background: rgba(10, 10, 26, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.mobile-nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--cyan);
  transition: var(--transition-fast);
}

.mobile-nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── SECTIONS COMMON ─── */
.section {
  min-height: 100vh;
  padding: var(--section-padding);
  position: relative;
}

.section-header {
  margin-bottom: 60px;
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--white);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  box-shadow: 0 0 10px var(--cyan);
}

.section-line {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
  margin: 40px 0;
}

/* ─── REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

.reveal-delay-5 {
  transition-delay: 0.5s;
}

/* ═══════ HERO SECTION ═══════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero-bg.png') center center no-repeat;
  background-size: cover;
  opacity: 0.4;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(10, 10, 26, 0.3) 0%, rgba(10, 10, 26, 0.9) 70%);
  z-index: 1;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 800px;
  padding: 0 30px;
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeSlideUp 0.8s ease forwards 0.5s;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--white) 0%, var(--cyan) 50%, var(--blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  opacity: 0;
  animation: fadeSlideUp 0.8s ease forwards 0.8s;
}

.hero-typed-wrapper {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2.5vw, 1.6rem);
  color: var(--gray);
  min-height: 50px;
  margin-bottom: 30px;
  opacity: 0;
  animation: fadeSlideUp 0.8s ease forwards 1.1s;
}

.hero-typed-wrapper .typed-text {
  color: var(--cyan);
  text-shadow: var(--glow-text);
}

.typed-cursor {
  display: inline-block;
  width: 3px;
  height: 1.2em;
  background: var(--cyan);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: cursor-blink 0.8s step-end infinite;
}

@keyframes cursor-blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto 40px;
  opacity: 0;
  animation: fadeSlideUp 0.8s ease forwards 1.4s;
}

.hero-cta-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeSlideUp 0.8s ease forwards 1.7s;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: var(--bg-primary);
  box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.5), 0 0 80px rgba(0, 240, 255, 0.2);
  color: var(--bg-primary);
}

.btn-outline {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}

.btn-outline:hover {
  background: rgba(0, 240, 255, 0.1);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
  color: var(--white);
}

/* Scan line effect on buttons */
.btn::before {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: var(--transition-smooth);
}

.btn:hover::before {
  top: 100%;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeSlideUp 0.8s ease forwards 2s;
}

.scroll-indicator span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gray);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {

  0%,
  100% {
    transform: rotate(45deg) translateY(0);
    opacity: 1;
  }

  50% {
    transform: rotate(45deg) translateY(10px);
    opacity: 0.5;
  }
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ═══════ ABOUT SECTION ═══════ */
#about {
  background: var(--bg-primary);
}

.about-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  align-items: start;
}

.profile-image-container {
  position: relative;
}

.profile-image-hex {
  position: relative;
  width: 260px;
  height: 260px;
  margin: 0 auto;
}

.profile-image-hex img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  border: 2px solid var(--border-glow);
}

.profile-image-hex::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--cyan), var(--blue), var(--magenta), var(--cyan));
  background-size: 300% 300%;
  animation: gradient-rotate 4s ease infinite;
  z-index: -1;
  opacity: 0.6;
}

@keyframes gradient-rotate {

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

  50% {
    background-position: 100% 50%;
  }
}

.profile-status {
  text-align: center;
  margin-top: 20px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--green);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 5px var(--green);
  }

  50% {
    opacity: 0.5;
    box-shadow: 0 0 15px var(--green);
  }
}

.about-content h3 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.about-role {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: 0.9rem;
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.about-bio {
  color: var(--gray);
  font-size: 1.05rem;
  margin-bottom: 30px;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  padding: 20px;
  text-align: center;
  transition: var(--transition-smooth);
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  color: var(--cyan);
  display: block;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.about-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-tag {
  padding: 6px 14px;
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid var(--border-glow);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  transition: var(--transition-fast);
}

.tech-tag:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

/* ═══════ SKILLS SECTION ═══════ */
#skills {
  background: var(--bg-secondary);
}

.skills-categories {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.skill-filter {
  padding: 8px 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: transparent;
  color: var(--gray);
  border: 1px solid var(--dark-gray);
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.skill-filter:hover,
.skill-filter.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 240, 255, 0.05);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  padding: 24px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.skill-card:hover {
  border-color: var(--cyan);
  transform: translateY(-6px);
  box-shadow: var(--glow-cyan);
}

.skill-card:hover::before {
  opacity: 1;
}

.skill-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(0, 240, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.5rem;
}

.skill-card h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.skill-card p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.5;
}

.skill-progress-container {
  margin-top: 14px;
}

.skill-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--dark-gray);
  border-radius: 2px;
  overflow: hidden;
}

.skill-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  border-radius: 2px;
  width: 0;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
}

.skill-card.visible .skill-progress-fill {
  width: var(--progress);
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  text-align: right;
  margin-top: 4px;
}

/* ═══════ EXPERIENCE SECTION ═══════ */
#experience {
  background: var(--bg-primary);
}

.timeline {
  position: relative;
  max-width: 900px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--border-glow), transparent);
}

.timeline-item {
  position: relative;
  padding-left: 75px;
  margin-bottom: 50px;
}

.timeline-dot {
  position: absolute;
  left: 22px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
  z-index: 2;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 2px;
  margin-bottom: 10px;
  display: inline-block;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  padding: var(--card-padding);
  transition: var(--transition-smooth);
}

.timeline-card:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.timeline-card h3 {
  margin-bottom: 4px;
}

.timeline-card .role {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.timeline-card p {
  color: var(--gray);
  font-size: 0.95rem;
  margin-bottom: 14px;
}

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

.timeline-tag {
  padding: 4px 10px;
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid var(--border-glow);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray);
}

/* Expandable details */
.timeline-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
}

.timeline-details.open {
  max-height: 2000px;
}

.timeline-expand-btn {
  background: none;
  border: 1px solid var(--border-glow);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-fast);
  margin-top: 12px;
  letter-spacing: 1px;
}

.timeline-expand-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--cyan);
}

.detail-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-glow);
}

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

.detail-item h4 {
  color: var(--white);
  font-size: 0.9rem;
  margin-bottom: 6px;
  font-family: var(--font-heading);
}

.detail-item p {
  font-size: 0.85rem;
  color: var(--gray);
  margin-bottom: 0;
}

/* ═══════ PROJECTS SECTION ═══════ */
#projects {
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  padding: var(--card-padding);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--magenta));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

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

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.project-icon {
  font-size: 2rem;
}

.project-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.project-card p {
  color: var(--gray);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

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

.project-tech span {
  padding: 3px 10px;
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid var(--border-glow);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
}

/* ═══════ ACADEMIC SECTION ═══════ */
#academic {
  background: var(--bg-primary);
}

.academic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
}

.academic-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  padding: var(--card-padding);
  transition: var(--transition-smooth);
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.academic-card:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}

.academic-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background: rgba(0, 240, 255, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.academic-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.academic-card p {
  font-size: 0.85rem;
  color: var(--gray);
}

/* ═══════ CONTACT SECTION ═══════ */
#contact {
  background: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
}

.contact-item:hover {
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.contact-icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  background: rgba(0, 240, 255, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.contact-item p {
  color: var(--gray);
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

.social-link {
  width: 50px;
  height: 50px;
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--gray);
  transition: var(--transition-smooth);
  background: var(--bg-card);
}

.social-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}

/* Contact CTA panel */
.contact-cta {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--border-radius);
  padding: 40px;
  text-align: center;
}

.contact-cta h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.contact-cta p {
  color: var(--gray);
  margin-bottom: 30px;
  font-size: 1rem;
}

.contact-cta .btn {
  margin: 0 auto;
}

/* ═══════ FOOTER ═══════ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-glow);
  padding: 30px 60px;
  text-align: center;
}

.footer p {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dark-gray);
  letter-spacing: 2px;
}

.footer .text-cyan {
  color: var(--cyan);
}

/* ═══════ SCAN LINE OVERLAY ═══════ */
.scan-lines {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  background: repeating-linear-gradient(0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.03) 2px,
      rgba(0, 0, 0, 0.03) 4px);
  opacity: 0.4;
}

/* ═══════ GLITCH TEXT ─── */
@keyframes glitch-text {

  0%,
  100% {
    text-shadow: -2px 0 var(--magenta), 2px 0 var(--cyan);
  }

  25% {
    text-shadow: 2px 0 var(--magenta), -2px 0 var(--cyan);
  }

  50% {
    text-shadow: -1px 2px var(--magenta), 1px -1px var(--cyan);
  }

  75% {
    text-shadow: 1px -2px var(--magenta), -1px 2px var(--cyan);
  }
}

.glitch-hover:hover {
  animation: glitch-text 0.3s infinite;
}

/* ═══════ RESPONSIVE ═══════ */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 40px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-tech-tags {
    justify-content: center;
  }

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

@media (max-width: 768px) {
  :root {
    --section-padding: 60px 20px;
  }

  .top-nav-links {
    display: none;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  /* Mobile full-screen nav */
  .mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
  }

  .mobile-nav.open {
    opacity: 1;
    visibility: visible;
  }

  .mobile-nav ul {
    text-align: center;
  }

  .mobile-nav ul li {
    margin-bottom: 24px;
  }

  .mobile-nav ul li a {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--white);
    letter-spacing: 4px;
    text-transform: uppercase;
    transition: var(--transition-fast);
  }

  .mobile-nav ul li a:hover {
    color: var(--cyan);
    text-shadow: var(--glow-text);
  }

  .hero-name {
    font-size: 2.2rem;
  }

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

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

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

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

  .timeline::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: 50px;
  }

  .timeline-dot {
    left: 7px;
  }

  .footer {
    padding: 20px;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
}

@media (max-width: 480px) {
  .hero-cta-group {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 260px;
    justify-content: center;
  }
}

/* ─── CORNER DECORATIONS ─── */
.corner-decoration {
  position: fixed;
  width: 80px;
  height: 80px;
  z-index: 998;
  pointer-events: none;
  opacity: 0.3;
}

.corner-decoration.top-right {
  top: 0;
  right: 0;
  border-top: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
}

.corner-decoration.bottom-left {
  bottom: 0;
  left: 0;
  border-bottom: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
}