/* BEL KI - Main Stylesheet */
@import url('variables.css');
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-2) var(--space-6);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo img {
  height: 95px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-base);
}

.logo img:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  text-transform: uppercase;
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  position: relative;
  padding-bottom: var(--space-1);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-purple));
  transition: width var(--transition-base);
}

.nav-links a:hover::after {
  width: 100%;
}

.burger-menu {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: var(--space-2);
}

.burger-line {
  width: 28px;
  height: 2px;
  background: var(--color-cyan);
  transition: all var(--transition-base);
}

/* Mobile Menu */
@media (max-width: 768px) {
  .logo img {
    height: 75px;
  }

  .nav-links {
    position: fixed;
    top: 95px;
    right: -100%;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: var(--space-8);
    border-left: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    min-width: 250px;
    transition: right var(--transition-base);
  }

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

  .burger-menu {
    display: flex;
  }

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

  .burger-menu.active .burger-line:nth-child(2) {
    opacity: 0;
  }

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

/* Footer */
.footer {
  background: var(--color-black-lighter);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-16) var(--space-6) var(--space-8);
  margin-top: var(--space-24);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
}

.footer-section h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  color: var(--color-cyan);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--space-2);
}

.footer-section a {
  color: var(--color-white-subtle);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-cyan);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.social-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.social-icon:hover {
  background: var(--color-cyan);
  color: var(--color-black);
  transform: translateY(-3px);
  box-shadow: var(--shadow-cyan);
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--glass-border);
  color: var(--color-white-subtle);
  font-size: var(--text-sm);
}

/* ============================================
   REUSABLE COMPONENTS
   ============================================ */

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) var(--space-6);
  position: relative;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: var(--text-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(0, 243, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 243, 255, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-cyan);
  border: 2px solid var(--color-cyan);
}

.btn-secondary:hover {
  background: var(--color-cyan);
  color: var(--color-black);
  transform: translateY(-3px);
}

.btn-large {
  padding: var(--space-6) var(--space-12);
  font-size: var(--text-xl);
}

/* Glass Cards */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.glass-card:hover {
  border-color: var(--color-cyan-dim);
  box-shadow: var(--shadow-cyan);
  transform: translateY(-5px);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background: rgba(0, 255, 136, 0.2);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.badge-pulse::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Progress Bar */
.progress-container {
  width: 100%;
  height: 40px;
  background: var(--color-black-lighter);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  border: 2px solid var(--glass-border);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-purple));
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
  position: relative;
  overflow: hidden;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

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

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: 700;
  font-size: var(--text-lg);
  z-index: 1;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-canvas);
}

.hero-content {
  position: relative;
  z-index: var(--z-base);
  text-align: center;
  max-width: 1200px;
  padding: var(--space-8);
}

.hero-title {
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 700;
  margin-bottom: var(--space-6);
  position: relative;
  display: inline-block;
}

.glitch {
  position: relative;
  color: var(--color-white);
  animation: glitch-main 5s infinite;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.glitch::before {
  left: 2px;
  text-shadow: -2px 0 var(--color-cyan);
  clip: rect(24px, 550px, 90px, 0);
  animation: glitch-before 3s infinite linear alternate-reverse;
}

.glitch::after {
  left: -2px;
  text-shadow: -2px 0 var(--color-purple);
  clip: rect(85px, 550px, 140px, 0);
  animation: glitch-after 2.5s infinite linear alternate-reverse;
}

@keyframes glitch-main {
  0%, 100% { transform: translate(0); }
  20% { transform: translate(-2px, 2px); }
  40% { transform: translate(-2px, -2px); }
  60% { transform: translate(2px, 2px); }
  80% { transform: translate(2px, -2px); }
}

@keyframes glitch-before {
  0% { clip: rect(61px, 9999px, 52px, 0); }
  10% { clip: rect(33px, 9999px, 144px, 0); }
  20% { clip: rect(121px, 9999px, 115px, 0); }
  30% { clip: rect(144px, 9999px, 162px, 0); }
  40% { clip: rect(62px, 9999px, 180px, 0); }
  50% { clip: rect(34px, 9999px, 42px, 0); }
  60% { clip: rect(147px, 9999px, 179px, 0); }
  70% { clip: rect(99px, 9999px, 92px, 0); }
  80% { clip: rect(188px, 9999px, 154px, 0); }
  90% { clip: rect(154px, 9999px, 91px, 0); }
  100% { clip: rect(119px, 9999px, 88px, 0); }
}

@keyframes glitch-after {
  0% { clip: rect(122px, 9999px, 92px, 0); }
  10% { clip: rect(17px, 9999px, 34px, 0); }
  20% { clip: rect(171px, 9999px, 104px, 0); }
  30% { clip: rect(52px, 9999px, 169px, 0); }
  40% { clip: rect(82px, 9999px, 180px, 0); }
  50% { clip: rect(114px, 9999px, 12px, 0); }
  60% { clip: rect(37px, 9999px, 89px, 0); }
  70% { clip: rect(99px, 9999px, 162px, 0); }
  80% { clip: rect(88px, 9999px, 154px, 0); }
  90% { clip: rect(24px, 9999px, 121px, 0); }
  100% { clip: rect(139px, 9999px, 80px, 0); }
}

.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 2rem);
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-8);
  font-weight: 600;
}

.hero-cta {
  display: flex;
  gap: var(--space-6);
  justify-content: center;
  margin-top: var(--space-12);
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

.scroll-indicator svg {
  width: 30px;
  height: 30px;
  color: var(--color-cyan);
}

/* ============================================
   MISSION SECTION
   ============================================ */

.comparison-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin: var(--space-12) 0;
}

.comparison-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 2px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
}

.comparison-card.highlight {
  border-color: var(--color-cyan);
  box-shadow: var(--shadow-cyan);
}

.comparison-card h3 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
}

.comparison-card ul {
  list-style: none;
  text-align: left;
}

.comparison-card li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.comparison-card li:last-child {
  border-bottom: none;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  margin: var(--space-16) 0;
}

.icon-card {
  text-align: center;
  padding: var(--space-6);
}

.icon-card svg {
  width: 60px;
  height: 60px;
  color: var(--color-cyan);
  margin-bottom: var(--space-4);
}

.icon-card h4 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

/* ============================================
   TECH PAGE SPECIFICS
   ============================================ */

.terminal {
  background: #000;
  border: 2px solid var(--color-cyan);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-success);
  max-height: 500px;
  overflow-y: auto;
  position: relative;
}

.terminal-header {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-cyan-dim);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27c93f; }

.terminal-line {
  margin-bottom: var(--space-2);
  line-height: 1.6;
}

.cursor {
  display: inline-block;
  width: 10px;
  height: 18px;
  background: var(--color-success);
  animation: blink 1s infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.chart-container {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin: var(--space-8) 0;
}

.code-block {
  background: #000;
  border: 1px solid var(--color-cyan-dim);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  margin: var(--space-6) 0;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--glass-border);
}

.copy-btn {
  background: var(--color-cyan-dim);
  color: var(--color-white);
  border: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: var(--color-cyan);
  color: var(--color-black);
}

.code-content {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-white-dim);
  overflow-x: auto;
}

.tilt-card {
  perspective: 1000px;
  transition: transform var(--transition-base);
}

.tilt-card:hover {
  transform: scale(1.05);
}

/* ============================================
   TIMELINE (ROADMAP)
   ============================================ */

.timeline {
  position: relative;
  max-width: 1000px;
  margin: var(--space-16) auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-cyan), var(--color-purple));
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-16);
  width: calc(50% - 40px);
}

.timeline-item:nth-child(odd) {
  margin-left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  margin-left: calc(50% + 40px);
  text-align: left;
}

.timeline-node {
  position: absolute;
  top: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-cyan);
  border: 4px solid var(--color-black);
  box-shadow: 0 0 20px var(--color-cyan);
}

.timeline-item:nth-child(odd) .timeline-node {
  right: -50px;
}

.timeline-item:nth-child(even) .timeline-node {
  left: -50px;
}

.timeline-node.completed {
  background: var(--color-success);
  box-shadow: 0 0 20px var(--color-success);
}

.timeline-node.future {
  background: var(--color-gray);
  box-shadow: none;
}

.timeline-content {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.timeline-date {
  font-family: var(--font-headline);
  font-size: var(--text-sm);
  color: var(--color-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}

.timeline-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: calc(100% - 60px);
    margin-left: 60px;
    text-align: left;
  }

  .timeline-node,
  .timeline-item:nth-child(odd) .timeline-node,
  .timeline-item:nth-child(even) .timeline-node {
    left: -50px;
  }
}

/* ============================================
   COOKIE BANNER
   ============================================ */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-6);
  z-index: var(--z-modal);
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.cookie-buttons {
  display: flex;
  gap: var(--space-4);
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Timeline Node Pulse Animation */
.timeline-node.pulse {
  animation: node-pulse 2s ease-in-out infinite;
}

@keyframes node-pulse {
  0%, 100% {
    box-shadow: 0 0 20px var(--color-success), 0 0 40px var(--color-success);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 30px var(--color-success), 0 0 60px var(--color-success);
    transform: scale(1.1);
  }
}

/* Responsive Typography */
@media (max-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-2xl); }

  .section {
    padding: var(--space-16) var(--space-4);
  }
}