/*
==============================================================================
# Copyright (c) 2026 IT support BD (https://itsupport.com.bd)
# Made By Arif (https://arifmahmud.com/)
# Project: AmpBlock
==============================================================================
*/

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Futuristic Cyber Palette */
  --bg-dark: #030712;
  --bg-subtle: #080f24;
  --bg-card: rgba(11, 20, 44, 0.72);
  --bg-card-hover: rgba(16, 29, 62, 0.85);
  
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-electric: #00d2ff;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-amber: #f59e0b;
  
  --border-glass: rgba(0, 242, 254, 0.15);
  --border-glass-hover: rgba(0, 242, 254, 0.55);
  --border-glow: 0 0 25px rgba(0, 242, 254, 0.35);
  
  --text-pure: #ffffff;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(0, 242, 254, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 25%, rgba(79, 172, 254, 0.10) 0%, transparent 50%),
    radial-gradient(circle at 50% 70%, rgba(16, 185, 129, 0.06) 0%, transparent 55%),
    linear-gradient(to bottom, rgba(3, 7, 18, 0.94), rgba(3, 7, 18, 0.98)),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  min-height: 100vh;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography & Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-pure);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 15%, var(--accent-cyan) 65%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.highlight {
  color: var(--accent-cyan);
  text-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

/* ==============================================================================
   NAVIGATION HEADER & MENUS
   ============================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  background: rgba(3, 7, 18, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 242, 254, 0.12);
  transition: var(--transition-fast);
}

.site-header.scrolled {
  background: rgba(3, 7, 18, 0.94);
  border-bottom-color: rgba(0, 242, 254, 0.25);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 78px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  group: logo;
}

.brand-logo {
  filter: drop-shadow(0 0 12px rgba(0, 242, 254, 0.5));
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.4s ease;
}

.logo-group:hover .brand-logo {
  transform: scale(1.1) rotate(5deg);
  filter: drop-shadow(0 0 20px rgba(0, 242, 254, 0.8));
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-pure);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 2px;
  transition: transform 0.3s ease;
  box-shadow: 0 0 10px var(--accent-cyan);
}

.nav-link:hover::after, .nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* Nav CTA Button */
.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(79, 172, 254, 0.15));
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-pill);
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition-smooth);
  box-shadow: 0 0 16px rgba(0, 242, 254, 0.2);
  position: relative;
  overflow: hidden;
}

.nav-cta-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.6s ease;
}

.nav-cta-btn:hover::before {
  left: 100%;
}

.nav-cta-btn:hover, .nav-cta-btn.active {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #030712;
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-pure);
  font-size: 22px;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ==============================================================================
   BUTTON STYLES & INTERACTIVE MICRO-ANIMATIONS
   ============================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  color: #030712;
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 35px rgba(0, 242, 254, 0.6);
  color: #010409;
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-pure);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(0, 242, 254, 0.12);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.2);
}

.btn-large {
  padding: 18px 38px;
  font-size: 17px;
  border-radius: var(--radius-md);
}

.btn-hero-dl {
  padding: 18px 36px;
  font-size: 17px;
  border-radius: var(--radius-md);
  animation: pulseGlow 3s infinite ease-in-out;
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 8px 25px rgba(0, 242, 254, 0.35);
  }
  50% {
    box-shadow: 0 12px 40px rgba(0, 242, 254, 0.7);
  }
}

/* ==============================================================================
   HERO SECTION
   ============================================================================== */
.hero-section {
  padding-top: 170px;
  padding-bottom: 90px;
  position: relative;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(ellipse, rgba(0, 242, 254, 0.18), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-mono);
  margin-bottom: 28px;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.15);
  animation: floatSlow 4s ease-in-out infinite;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: blink 1.5s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.7); }
}

.hero-title {
  font-size: 64px;
  letter-spacing: -0.03em;
  max-width: 960px;
  margin: 0 auto 24px auto;
  font-weight: 800;
}

.hero-subtitle {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 40px auto;
  font-weight: 400;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.browser-notice {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 60px;
}

/* Stats Ribbon */
.stats-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(16px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  max-width: 1080px;
  margin: 0 auto;
}

.stat-card {
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px;
}

.stat-card:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 38px;
  font-weight: 800;
  color: #ffffff;
  display: block;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-top: 6px;
  display: block;
}

/* ==============================================================================
   INTERACTIVE SIMULATOR SECTION
   ============================================================================== */
.simulator-section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px auto;
}

.section-title {
  font-size: 40px;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.sim-switch-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 30px;
}

.sim-toggle-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.sim-toggle-label.active {
  color: var(--accent-cyan);
}

/* iOS-style toggle switch */
.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 32px;
}

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

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #1e293b;
  transition: .3s;
  border-radius: 34px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 5px;
  bottom: 4px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.5);
}

input:checked + .slider:before {
  transform: translateX(27px);
  background-color: #030712;
}

.sim-status-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-top: 18px;
  transition: var(--transition-fast);
}

.sim-status-badge.protected {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-emerald);
  color: #34d399;
}

.sim-status-badge.unprotected {
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid var(--accent-rose);
  color: #fb7185;
}

/* Browser Mockup Window */
.browser-mockup {
  background: #070d1e;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  transition: var(--transition-smooth);
}

.browser-topbar {
  background: #0c152c;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.traffic-lights {
  display: flex;
  gap: 8px;
}

.light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.light.red { background: #f43f5e; }
.light.yellow { background: #f59e0b; }
.light.green { background: #10b981; }

.address-bar {
  flex: 1;
  background: rgba(3, 7, 18, 0.6);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
}

.sim-webpage-content {
  padding: 30px;
  display: grid;
  grid-template-columns: 2.2fr 1fr;
  gap: 28px;
  min-height: 420px;
}

.sim-ad-slot {
  background: rgba(244, 63, 94, 0.15);
  border: 2px dashed var(--accent-rose);
  color: #fca5a5;
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  font-weight: 600;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  margin-bottom: 20px;
}

.sim-ad-slot .ad-tag {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--accent-rose);
  color: #ffffff;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

/* Protected State collapses Ads to Zero Space */
.sim-protected .sim-ad-slot {
  height: 0 !important;
  min-height: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
  opacity: 0 !important;
  border: none !important;
}

.sim-video-player {
  background: #02040a;
  border-radius: var(--radius-md);
  height: 260px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 20px;
}

.video-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-pure);
  font-weight: 600;
}

.play-btn {
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #030712;
  font-size: 20px;
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
}

.sim-text-content h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.sim-text-content p {
  color: var(--text-secondary);
  font-size: 15px;
}

.sim-widget {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.sim-widget h4 {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--accent-cyan);
}

.up-next-item {
  background: rgba(255, 255, 255, 0.04);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

/* ==============================================================================
   CORE PILLARS / FEATURES GRID
   ============================================================================== */
.pillars-section {
  padding: 100px 0;
  position: relative;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition-smooth);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 80% 0%, rgba(0, 242, 254, 0.08), transparent 60%);
  pointer-events: none;
}

.pillar-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 16px 45px rgba(0, 242, 254, 0.16);
  background: var(--bg-card-hover);
}

.pillar-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.15);
  transition: var(--transition-fast);
}

.pillar-card:hover .pillar-icon {
  transform: scale(1.1) rotate(3deg);
  background: rgba(0, 242, 254, 0.2);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
}

.pillar-card h3 {
  font-size: 21px;
  margin-bottom: 12px;
}

.pillar-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.65;
}

/* ==============================================================================
   BROWSER STRIP
   ============================================================================== */
.browsers-strip {
  padding: 60px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.25);
  text-align: center;
}

.browsers-title {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.browser-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.browser-badge {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.browser-badge:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.08);
  transform: translateY(-2px);
}

/* ==============================================================================
   BOTTOM CTA BANNER
   ============================================================================== */
.bottom-cta {
  padding: 100px 0;
  position: relative;
}

.cta-container {
  background: linear-gradient(135deg, rgba(8, 15, 36, 0.95), rgba(16, 29, 62, 0.95));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 60px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), inset 0 0 30px rgba(0, 242, 254, 0.05);
  flex-wrap: wrap;
}

.cta-text h2 {
  font-size: 36px;
  margin-bottom: 12px;
}

.cta-text p {
  color: var(--text-secondary);
  font-size: 17px;
}

/* ==============================================================================
   FEATURES PAGE (DEEP DIVES & TECH CARDS)
   ============================================================================== */
.page-container {
  padding-top: 150px;
  padding-bottom: 100px;
}

.page-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 70px auto;
}

.page-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 2px;
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

.page-title {
  font-size: 48px;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.page-lead {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-deep-dive {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 100px;
}

.feature-deep-dive.reverse {
  grid-template-columns: 1fr 1.2fr;
}

.feature-deep-dive.reverse .feature-text {
  order: 2;
}

.feature-deep-dive.reverse .feature-media {
  order: 1;
}

.feature-pill {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.feature-text h2 {
  font-size: 34px;
  margin-bottom: 18px;
}

.feature-description {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-checklist {
  list-style: none;
}

.feature-checklist li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 14px;
  color: var(--text-primary);
  font-size: 15px;
}

.feature-checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-cyan);
  font-weight: 800;
  font-size: 16px;
}

/* Tech Code Card */
.tech-card {
  background: #060b18;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.tech-header {
  background: #0e1830;
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.tech-badge {
  background: var(--accent-cyan);
  color: #030712;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.tech-code {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: #7dd3fc;
  overflow-x: auto;
}

.tech-status {
  padding: 10px 18px;
  background: rgba(0, 0, 0, 0.4);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 12px;
  color: #34d399;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
}

/* ==============================================================================
   ABOUT & TEAM PAGE
   ============================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 60px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  backdrop-filter: blur(12px);
}

.about-icon {
  margin-bottom: 20px;
}

.about-card h2 {
  font-size: 26px;
  margin-bottom: 16px;
}

.about-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.manifesto-list {
  list-style: none;
}

.manifesto-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  color: var(--text-primary);
  font-size: 15px;
}

.manifesto-list li::before {
  content: '🛡️';
  position: absolute;
  left: 0;
  top: -1px;
  font-size: 14px;
}

.authors-section {
  margin: 60px 0;
}

.team-profile-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition-smooth);
}

.team-profile-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-5px);
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.avatar-box {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.4);
}

.avatar-box.org {
  background: linear-gradient(135deg, #10b981, #06b6d4);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.avatar-initials {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  color: #030712;
}

.profile-name {
  font-size: 24px;
  margin-bottom: 4px;
}

.profile-role {
  font-size: 14px;
  color: var(--accent-cyan);
  font-weight: 600;
}

.profile-bio {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 24px;
}

.profile-link-btn {
  display: inline-flex;
  align-items: center;
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  transition: var(--transition-fast);
}

.profile-link-btn:hover {
  transform: translateX(4px);
  color: #ffffff;
}

.legal-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 30px;
  margin-top: 40px;
}

.legal-box h3 {
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--accent-cyan);
}

.legal-pre {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  overflow-x: auto;
}

/* ==============================================================================
   DOWNLOAD PAGE & INSTALL GUIDE
   ============================================================================== */
.download-hero-card {
  background: linear-gradient(135deg, rgba(11, 20, 44, 0.9), rgba(16, 29, 62, 0.95));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 80px auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 35px rgba(0, 242, 254, 0.15);
}

.download-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.1);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.download-title {
  font-size: 46px;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.download-desc {
  color: var(--text-secondary);
  font-size: 18px;
  max-width: 680px;
  margin: 0 auto 36px auto;
}

.download-action-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.file-checksum {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.install-guide-section {
  margin-bottom: 90px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
  transition: var(--transition-smooth);
}

.step-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 16px 40px rgba(0, 242, 254, 0.15);
}

.step-number {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 900;
  color: rgba(0, 242, 254, 0.2);
  margin-bottom: 12px;
  line-height: 1;
}

.step-card h3 {
  font-size: 22px;
  margin-bottom: 14px;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 20px;
}

.browser-url-box {
  background: #040813;
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.step-tip {
  font-size: 13px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  padding: 10px 14px;
  border-radius: 6px;
  border-left: 3px solid var(--text-muted);
}

.step-tip.highlight {
  border-left-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.06);
}

/* FAQ Accordion */
.faq-section {
  max-width: 860px;
  margin: 0 auto;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-question {
  padding: 22px 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-pure);
  user-select: none;
}

.faq-chevron {
  color: var(--accent-cyan);
  transition: transform 0.3s ease;
  font-size: 18px;
}

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

.faq-answer {
  padding: 0 26px 24px 26px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  display: none;
}

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

/* ==============================================================================
   FOOTER
   ============================================================================== */
.site-footer {
  background: #020409;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 80px 0 40px 0;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}

.footer-brand .logo-group {
  margin-bottom: 16px;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 14px;
  max-width: 380px;
  line-height: 1.65;
  margin-bottom: 20px;
}

.copyright-notice {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.copyright-notice a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.copyright-notice a:hover {
  text-decoration: underline;
}

.footer-links-group h4 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-pure);
  margin-bottom: 20px;
}

.footer-links-group ul {
  list-style: none;
}

.footer-links-group li {
  margin-bottom: 12px;
}

.footer-links-group a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition-fast);
}

.footer-links-group a:hover {
  color: var(--accent-cyan);
}

/* ==============================================================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   ============================================================================== */
@media (max-width: 992px) {
  .hero-title { font-size: 46px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-ribbon { grid-template-columns: repeat(2, 1fr); }
  .stat-card:nth-child(2) { border-right: none; }
  .feature-deep-dive, .feature-deep-dive.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .feature-deep-dive.reverse .feature-text { order: 1; }
  .feature-deep-dive.reverse .feature-media { order: 2; }
  .footer-content { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  
  .nav-links {
    position: fixed;
    top: 78px;
    left: 0;
    width: 100%;
    background: rgba(3, 7, 18, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    flex-direction: column;
    padding: 30px 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(0, 242, 254, 0.2);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  }
  
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .nav-cta-btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero-title { font-size: 34px; letter-spacing: -0.02em; }
  .hero-subtitle { font-size: 16px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats-ribbon { grid-template-columns: 1fr; }
  .stat-card { border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.08); padding-bottom: 20px; }
  .stat-card:last-child { border-bottom: none; }
  .sim-webpage-content { grid-template-columns: 1fr; }
  .sim-sidebar { display: none; }
  .footer-content { grid-template-columns: 1fr; }
  .cta-container { padding: 40px 24px; text-align: center; justify-content: center; }
  .page-title { font-size: 34px; }
  .download-title { font-size: 32px; }
  .download-hero-card { padding: 40px 20px; }
}