/* Reset & CSS Variables */
:root {
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --bg-dark: #0b0f19;
  --bg-card: rgba(18, 26, 43, 0.7);
  --bg-card-hover: rgba(26, 37, 60, 0.85);
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.35);
  --accent-teal: #10b981;
  --accent-teal-glow: rgba(16, 185, 129, 0.3);
  --accent-cyan: #06b6d4;
  --accent-amber: #f59e0b;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --border-light: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(59, 130, 246, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  color-scheme: dark;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Animated Gradient Mesh & Grid */
.bg-decor {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.45;
  animation: blobFloat 18s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.blob-1 {
  top: -10%;
  left: -10%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, #2563eb 0%, #1d4ed8 100%);
}

.blob-2 {
  bottom: -15%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, #059669 0%, #0d9488 100%);
  animation-delay: -6s;
}

.blob-3 {
  top: 40%;
  left: 30%;
  width: 35vw;
  height: 35vw;
  background: radial-gradient(circle, #7c3aed 0%, #4f46e5 100%);
  animation-delay: -12s;
  opacity: 0.25;
}

.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}

@keyframes blobFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.08); }
  100% { transform: translate(-30px, 80px) scale(0.95); }
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px var(--primary-glow);
  color: #fff;
  font-size: 20px;
}

.brand-img {
  height: 44px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.3));
}

.brand-img-footer {
  height: 36px;
  width: auto;
  object-fit: contain;
  opacity: 0.9;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, #a5f3fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tag {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-main);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #2563eb);
  color: #ffffff;
  box-shadow: 0 4px 25px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.btn-teal {
  background: linear-gradient(135deg, var(--accent-teal), #059669);
  color: #ffffff;
  box-shadow: 0 4px 25px var(--accent-teal-glow);
}

.btn-teal:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

/* Badge Component */
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60a5fa;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.pill-badge .dot {
  width: 8px;
  height: 8px;
  background-color: #60a5fa;
  border-radius: 50%;
  box-shadow: 0 0 10px #60a5fa;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Hero Section */
.hero {
  padding-top: 160px;
  padding-bottom: 90px;
  text-align: center;
  position: relative;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span {
  background: linear-gradient(135deg, #60a5fa 0%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 40px auto;
  font-weight: 400;
}

/* Countdown Timer */
.countdown-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 24px 32px;
  border-radius: var(--radius-lg);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 48px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.countdown-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.countdown-grid {
  display: flex;
  gap: 20px;
}

.timer-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 68px;
}

.timer-val {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  font-family: monospace;
  background: rgba(255, 255, 255, 0.04);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  width: 100%;
  text-align: center;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

.timer-unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
  text-transform: uppercase;
  font-weight: 600;
}

/* Form Subscription Input */
.hero-subscribe {
  max-width: 540px;
  margin: 0 auto 56px auto;
}

.subscribe-form {
  display: flex;
  gap: 10px;
  background: var(--bg-card);
  padding: 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

.subscribe-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 25px var(--primary-glow);
}

.subscribe-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 12px 20px;
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: inherit;
}

.subscribe-input::placeholder {
  color: var(--text-dim);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(16px);
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: left;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 14px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
}

.stat-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Interactive Simulator Section */
.simulator-section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px auto;
}

.section-tag {
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.sim-container {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(20px);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.sim-scanner-box {
  background: #030712;
  border-radius: var(--radius-md);
  border: 2px dashed rgba(59, 130, 246, 0.4);
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

.sim-video-view {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-md);
  border: 2px solid var(--primary);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  box-shadow: 0 0 30px var(--primary-glow);
}

.sim-scan-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #38bdf8, transparent);
  box-shadow: 0 0 15px #38bdf8;
  animation: scanAnim 2.5s infinite linear;
}

@keyframes scanAnim {
  0% { top: 5%; }
  50% { top: 90%; }
  100% { top: 5%; }
}

.qr-placeholder {
  width: 120px;
  height: 120px;
  opacity: 0.85;
}

.sim-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sim-status-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
}

.sim-mode-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 16px;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.2);
  transition: .4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent-teal);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

.sim-action-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-sim {
  padding: 10px 18px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
}

.sim-result-toast {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.sim-result-toast.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.sim-result-toast.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
}

/* Features Grid */
.features-section {
  padding: 90px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(16px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: rgba(59, 130, 246, 0.4);
}

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

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.feature-card:nth-child(2) .feature-icon-wrapper {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
}
.feature-card:nth-child(3) .feature-icon-wrapper {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
}
.feature-card:nth-child(4) .feature-icon-wrapper {
  background: rgba(168, 85, 247, 0.12);
  color: #c084fc;
}
.feature-card:nth-child(5) .feature-icon-wrapper {
  background: rgba(6, 182, 212, 0.12);
  color: #22d3ee;
}
.feature-card:nth-child(6) .feature-icon-wrapper {
  background: rgba(244, 63, 94, 0.12);
  color: #fb7185;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Architecture Showcase */
.tech-section {
  padding: 80px 0;
  background: rgba(11, 15, 25, 0.5);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 36px;
}

.tech-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  padding: 12px 20px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}

.tech-chip:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Registration Form Modal & Section */
.register-section {
  padding: 100px 0;
}

.register-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
  max-width: 800px;
  margin: 0 auto;
  backdrop-filter: blur(20px);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  background: rgba(3, 7, 18, 0.6);
  border: 1px solid var(--border-light);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
}

/* FAQ Accordion */
.faq-section {
  padding: 90px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
}

.faq-answer {
  padding: 0 28px 22px 28px;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: none;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-icon {
  transition: var(--transition);
  color: var(--text-dim);
}

/* Toast Alert System */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--border-light);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  color: #fff;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s forwards;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Footer */
.footer {
  padding: 60px 0 30px 0;
  border-top: 1px solid var(--border-light);
  background: #070a12;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--text-dim);
}

/* Responsiveness */
@media (max-width: 900px) {
  .sim-container {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .register-card {
    padding: 28px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
}