@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Variables */
:root {
  --bg-primary: #070a13;
  --bg-secondary: #0f1626;
  --bg-card: rgba(15, 22, 38, 0.7);
  --bg-card-hover: rgba(22, 32, 54, 0.85);
  --accent-green: #a3e635;
  --accent-green-rgb: 163, 230, 53;
  --accent-purple: #8b5cf6;
  --accent-purple-rgb: 139, 92, 246;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(163, 230, 53, 0.2);
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-premium: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 20px rgba(163, 230, 53, 0.15);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 8rem 0;
  position: relative;
}

.text-gradient-green {
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-purple {
  background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 10, 19, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

header.scrolled {
  background: rgba(7, 10, 19, 0.95);
  box-shadow: var(--shadow-premium);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

nav ul a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

nav ul a:hover, nav ul a.active {
  color: var(--accent-green);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--accent-green);
  color: var(--bg-primary);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(163, 230, 53, 0.4);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-glass {
  background: rgba(139, 92, 246, 0.15);
  color: var(--text-primary);
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.btn-glass:hover {
  background: rgba(139, 92, 246, 0.25);
  border-color: rgba(139, 92, 246, 0.5);
  transform: translateY(-2px);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 24px;
  height: 24px;
  position: relative;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  position: absolute;
  left: 0;
  transition: var(--transition-smooth);
}

.menu-toggle span:nth-child(1) { top: 4px; }
.menu-toggle span:nth-child(2) { top: 11px; }
.menu-toggle span:nth-child(3) { top: 18px; }

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(163, 230, 53, 0.08) 0%, transparent 50%);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(163, 230, 53, 0.1);
  border: 1px solid rgba(163, 230, 53, 0.25);
  border-radius: 9999px;
  color: var(--accent-green);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

/* Glass Mockup Frame */
.hero-mockup {
  position: relative;
  display: flex;
  justify-content: center;
}

.mockup-container {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: var(--shadow-premium), var(--shadow-glow);
  position: relative;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
}

.mockup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dot:nth-child(1) { background-color: #ef4444; }
.mockup-dot:nth-child(2) { background-color: #eab308; }
.mockup-dot:nth-child(3) { background-color: #22c55e; }

.mockup-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Interactive Simulator Widget */
.widget-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.widget-title i {
  color: var(--accent-green);
}

.lang-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.lang-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 0.25rem;
  border-radius: 8px;
  font-size: 0.75rem;
  cursor: pointer;
  text-align: center;
  transition: var(--transition-smooth);
}

.lang-btn.active {
  background: rgba(163, 230, 53, 0.15);
  border-color: var(--accent-green);
  color: var(--accent-green);
  font-weight: 600;
}

.mockup-screen {
  background: rgba(7, 10, 19, 0.5);
  border-radius: 12px;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.screen-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.screen-title {
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.screen-desc {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.85rem;
  line-height: 1.4;
}

.screen-input-container {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.screen-input {
  flex-grow: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.5rem;
  color: var(--text-primary);
  font-size: 0.8rem;
  pointer-events: none;
}

.screen-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: rgba(139, 92, 246, 0.2);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: #c084fc;
}

/* Stats Section */
.stats-bar {
  background: linear-gradient(90deg, rgba(15, 22, 38, 0.8) 0%, rgba(7, 10, 19, 0.8) 100%);
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent-green);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
}

/* Section Common Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem auto;
}

.section-tag {
  color: var(--accent-purple);
  text-transform: uppercase;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  display: inline-block;
}

.section-header h2 {
  font-size: 2.75rem;
  margin-bottom: 1.25rem;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Grid & Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

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

.card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-premium);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(163, 230, 53, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-green);
  font-size: 1.5rem;
  margin-bottom: 1.75rem;
  transition: var(--transition-smooth);
}

.card:hover .card-icon {
  background: var(--accent-green);
  color: var(--bg-primary);
  transform: scale(1.05);
}

.card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Failures / Challenges section */
.why-us-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.failure-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.fail-card {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
  background: rgba(239, 68, 68, 0.03);
  border: 1px solid rgba(239, 68, 68, 0.08);
  border-radius: 16px;
  transition: var(--transition-smooth);
}

.fail-card:hover {
  border-color: rgba(239, 68, 68, 0.2);
  background: rgba(239, 68, 68, 0.05);
}

.fail-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: rgba(239, 68, 68, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ef4444;
  font-weight: 700;
  font-size: 1.1rem;
}

.fail-text h4 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.fail-text p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.advantage-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.adv-card {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
  background: rgba(163, 230, 53, 0.04);
  border: 1px solid rgba(163, 230, 53, 0.1);
  border-radius: 16px;
  transition: var(--transition-smooth);
}

.adv-card:hover {
  border-color: rgba(163, 230, 53, 0.3);
  background: rgba(163, 230, 53, 0.07);
}

.adv-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: rgba(163, 230, 53, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-green);
  font-weight: 700;
  font-size: 1.1rem;
}

.adv-text h4 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.adv-text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Interactive Demos Hub */
.demo-section-bg {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.demo-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.demo-tab-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.8rem 1.8rem;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.demo-tab-btn.active {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
  color: var(--text-primary);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.demo-content-pane {
  display: none;
}

.demo-content-pane.active {
  display: block;
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.demo-panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.demo-description h3 {
  font-size: 2rem;
  margin-bottom: 1.25rem;
}

.demo-description p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.demo-interactive-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow-premium);
  backdrop-filter: blur(10px);
}

/* Demo 1: Dictionary Hover CSS */
.reading-text {
  line-height: 2;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.dict-word {
  border-bottom: 1px dashed var(--accent-green);
  cursor: help;
  color: var(--text-primary);
  padding: 0 2px;
  position: relative;
  transition: var(--transition-smooth);
}

.dict-word:hover {
  background: rgba(163, 230, 53, 0.15);
  color: var(--accent-green);
}

/* Custom Tooltip style in JS or CSS */
.dict-word .tooltip {
  visibility: hidden;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: #0f172a;
  border: 1px solid var(--accent-green);
  color: var(--text-primary);
  text-align: center;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  z-index: 100;
  width: 220px;
  font-size: 0.85rem;
  box-shadow: var(--shadow-premium);
  line-height: 1.4;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: auto;
}

.dict-word .tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--accent-green) transparent transparent transparent;
}

.dict-word:hover .tooltip {
  visibility: visible;
  opacity: 1;
  transform: translateX(-50%) translateY(-5px);
}

.tooltip-title {
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: 0.25rem;
  display: block;
}

.tooltip-action-btn {
  display: block;
  width: 100%;
  background: var(--accent-purple);
  border: none;
  color: white;
  padding: 0.3rem 0;
  margin-top: 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.tooltip-action-btn:hover {
  background: #7c3aed;
}

.dictionary-counter {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.saved-words-tag {
  background: rgba(163, 230, 53, 0.1);
  color: var(--accent-green);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 600;
}

/* Demo 2: AI Tutor CSS */
.chat-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 200px;
  max-height: 250px;
  overflow-y: auto;
  margin-bottom: 1.5rem;
  padding-right: 0.5rem;
}

.chat-bubble {
  max-width: 85%;
  padding: 0.8rem 1.2rem;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.4;
}

.bubble-ai {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-top-left-radius: 4px;
}

.bubble-user {
  align-self: flex-end;
  background: var(--accent-purple);
  color: white;
  border-top-right-radius: 4px;
}

.chat-input-row {
  display: flex;
  gap: 0.75rem;
}

.chat-input-row input {
  flex-grow: 1;
  background: rgba(7, 10, 19, 0.5);
  border: 1px solid var(--border-color);
  color: white;
  border-radius: 12px;
  padding: 0.8rem 1.2rem;
  outline: none;
  transition: var(--transition-smooth);
}

.chat-input-row input:focus {
  border-color: var(--accent-purple);
}

.chat-send-btn {
  background: var(--accent-green);
  color: var(--bg-primary);
  border: none;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.chat-send-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 15px rgba(163, 230, 53, 0.3);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  position: relative;
}

.pricing-card.popular {
  border-color: var(--accent-green);
  box-shadow: 0 0 30px rgba(163, 230, 53, 0.1);
  transform: translateY(-5px);
}

.popular-badge {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  background: var(--accent-green);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  text-transform: uppercase;
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-premium);
}

.pricing-card.popular:hover {
  border-color: var(--accent-green);
  box-shadow: 0 10px 40px rgba(163, 230, 53, 0.2);
}

.plan-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.plan-price {
  margin: 1.5rem 0;
  display: flex;
  align-items: baseline;
}

.plan-price-num {
  font-size: 3rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.plan-price-period {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-left: 0.25rem;
}

.plan-features {
  list-style: none;
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-grow: 1;
}

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

.plan-features li::before {
  content: '✓';
  color: var(--accent-green);
  font-weight: bold;
}

.pricing-card.popular .plan-features li::before {
  color: var(--accent-green);
}

.pricing-card .btn {
  width: 100%;
}

/* Contact/Inquiry Section */
.contact-section {
  position: relative;
  background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 60%);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 5rem;
  align-items: center;
}

.contact-info h2 {
  font-size: 2.75rem;
  margin-bottom: 1.5rem;
}

.contact-info p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(139, 92, 246, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-purple);
  font-size: 1.25rem;
}

.contact-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.contact-value {
  font-weight: 600;
  color: var(--text-primary);
}

.contact-form-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 3rem;
  border-radius: 24px;
  box-shadow: var(--shadow-premium);
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  background: rgba(7, 10, 19, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.8rem 1.2rem;
  color: white;
  outline: none;
  font-family: var(--font-body);
  transition: var(--transition-smooth);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 10px rgba(163, 230, 53, 0.1);
}

.form-group select option {
  background-color: var(--bg-secondary);
  color: white;
}

.contact-form-box button {
  width: 100%;
  margin-top: 1rem;
}

.form-success-msg {
  display: none;
  text-align: center;
  color: var(--accent-green);
  font-weight: 600;
  margin-top: 1rem;
  padding: 0.75rem;
  background: rgba(163, 230, 53, 0.1);
  border: 1px solid rgba(163, 230, 53, 0.2);
  border-radius: 8px;
}

/* Footer */
footer {
  background-color: #04060b;
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 3rem 0;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-links h4 {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links a {
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--accent-green);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
}

/* Responsive Rules */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 3.25rem;
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
  .menu-toggle {
    display: block;
  }
  nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #070a13;
    border-bottom: 1px solid var(--border-color);
    padding: 2rem;
    box-shadow: var(--shadow-premium);
  }
  nav.active {
    display: block;
  }
  nav ul {
    flex-direction: column;
    gap: 1.5rem;
  }
  .header-cta {
    display: none;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-mockup {
    order: -1;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .why-us-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .demo-panel-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}