/* ============================================
   Bambuddy Website - Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
  /* Colors */
  --bg-primary: #0a0f1a;
  --bg-secondary: #141b2d;
  --bg-tertiary: #1a2332;
  --bg-card: rgba(26, 35, 50, 0.8);

  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #64748b;

  --accent-cyan: #00d4ff;
  --accent-green: #00ff88;
  --accent-purple: #a855f7;
  --accent-orange: #f97316;

  --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
  --glow-green: 0 0 20px rgba(0, 255, 136, 0.3);

  --gradient-accent: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
  --gradient-hero: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
}

/* Background Grid Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

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

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

a:hover {
  color: var(--accent-green);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  color: var(--text-secondary);
}

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-md) 0;
  background: rgba(10, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--spacing-sm) 0;
  background: rgba(10, 15, 26, 0.95);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-logo svg {
  width: 32px;
  height: 32px;
}

.nav-logo .logo-img {
  height: 40px;
  width: auto;
}

.nav-logo:hover {
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  position: relative;
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--gradient-accent);
  color: var(--bg-primary);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--glow-cyan);
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

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

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

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--accent-cyan);
  margin-bottom: var(--spacing-xl);
}

.hero-title {
  margin-bottom: var(--spacing-lg);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.hero-logo {
  margin-bottom: var(--spacing-xl);
}

.hero-logo img {
  max-width: 600px;
  height: auto;
}

/* Screenshot Collage - Fanned Cards */
.screenshot-collage {
  position: relative;
  margin-top: var(--spacing-3xl);
  height: 650px;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  perspective: 1200px;
}

.collage-item {
  position: absolute;
  width: 55%;
  left: 50%;
  top: 50%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.4s ease, box-shadow 0.4s ease, opacity 0.4s ease;
  transform-origin: center bottom;
}

.collage-item:hover {
  z-index: 100 !important;
  opacity: 1 !important;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 212, 255, 0.2);
}

.collage-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Outer fan - back layer (spread far left/right) */
.fan-1  { transform: translate(-130%, -50%) rotate(-12deg); z-index: 1; opacity: 0.5; }
.fan-2  { transform: translate(-100%, -50%) rotate(-8deg); z-index: 2; opacity: 0.55; }
.fan-3  { transform: translate(0%, -50%) rotate(8deg); z-index: 2; opacity: 0.55; }
.fan-4  { transform: translate(30%, -50%) rotate(12deg); z-index: 1; opacity: 0.5; }

/* Middle fan */
.fan-5  { transform: translate(-85%, -50%) rotate(-6deg); z-index: 3; opacity: 0.7; }
.fan-6  { transform: translate(-70%, -50%) rotate(-4deg); z-index: 4; opacity: 0.75; }
.fan-7  { transform: translate(-30%, -50%) rotate(4deg); z-index: 4; opacity: 0.75; }
.fan-8  { transform: translate(-15%, -50%) rotate(6deg); z-index: 3; opacity: 0.7; }

/* Inner fan - front layer */
.fan-9  { transform: translate(-60%, -50%) rotate(-2deg); z-index: 5; opacity: 0.9; }
.fan-10 { transform: translate(-40%, -50%) rotate(2deg); z-index: 5; opacity: 0.9; }

/* Center - hero screenshots */
.fan-11 { transform: translate(-53%, -50%) rotate(-1deg); z-index: 6; }
.fan-center {
  transform: translate(-47%, -50%) rotate(0deg);
  z-index: 7;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 50px rgba(0, 212, 255, 0.15);
}

/* Hover states */
.fan-1:hover  { transform: translate(-130%, -55%) rotate(-6deg) scale(1.08); }
.fan-2:hover  { transform: translate(-100%, -55%) rotate(-4deg) scale(1.08); }
.fan-3:hover  { transform: translate(0%, -55%) rotate(4deg) scale(1.08); }
.fan-4:hover  { transform: translate(30%, -55%) rotate(6deg) scale(1.08); }
.fan-5:hover  { transform: translate(-85%, -55%) rotate(-3deg) scale(1.08); }
.fan-6:hover  { transform: translate(-70%, -55%) rotate(-2deg) scale(1.08); }
.fan-7:hover  { transform: translate(-30%, -55%) rotate(2deg) scale(1.08); }
.fan-8:hover  { transform: translate(-15%, -55%) rotate(3deg) scale(1.08); }
.fan-9:hover  { transform: translate(-60%, -55%) rotate(-1deg) scale(1.08); }
.fan-10:hover { transform: translate(-40%, -55%) rotate(1deg) scale(1.08); }
.fan-11:hover { transform: translate(-53%, -55%) rotate(0deg) scale(1.08); }
.fan-center:hover { transform: translate(-47%, -55%) rotate(0deg) scale(1.08); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--bg-primary);
}

.btn-primary:hover {
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--glow-cyan);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

.btn svg {
  width: 20px;
  height: 20px;
}

/* Sections */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header p {
  margin-top: var(--spacing-md);
  font-size: 1.125rem;
}

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  position: relative;
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--glow-cyan);
}

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

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-lg);
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--accent-cyan);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  font-size: 0.9375rem;
}

/* Printer Grid */
.printers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.printer-card {
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.printer-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--glow-cyan);
}

.printer-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  color: var(--accent-cyan);
}

.printer-card h4 {
  margin-bottom: var(--spacing-xs);
}

.printer-card .models {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.printer-card .badge {
  display: inline-block;
  margin-top: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--accent-green);
}

/* Printer Images */
.printer-images {
  position: relative;
  height: 100px;
  margin: 0 auto var(--spacing-md);
  perspective: 400px;
  overflow: hidden;
}

.printer-images img {
  max-height: 80px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
  transition: transform var(--transition-base);
}

/* Single printer image */
.printer-img-single {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

/* 2-image collage (X1, P1 series) */
.printer-collage {
  display: flex;
  justify-content: center;
  align-items: center;
}

.printer-collage .printer-img-main {
  position: absolute;
  left: 55%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(3deg);
  z-index: 2;
}

.printer-collage .printer-img-secondary {
  position: absolute;
  left: 45%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-5deg);
  z-index: 1;
  opacity: 0.85;
}

.printer-card:hover .printer-collage .printer-img-main {
  transform: translate(-50%, -55%) rotate(5deg) scale(1.05);
}

.printer-card:hover .printer-collage .printer-img-secondary {
  transform: translate(-50%, -55%) rotate(-8deg) scale(1.02);
  opacity: 0.9;
}

/* 3-image collage (A1 series) */
.printer-triple .printer-img-main {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
}

.printer-triple .printer-img-left {
  position: absolute;
  left: 25%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-8deg);
  z-index: 1;
  opacity: 0.75;
  max-height: 65px !important;
}

.printer-triple .printer-img-right {
  position: absolute;
  left: 75%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(8deg);
  z-index: 2;
  opacity: 0.8;
  max-height: 70px !important;
}

.printer-card:hover .printer-triple .printer-img-main {
  transform: translate(-50%, -55%) scale(1.05);
}

.printer-card:hover .printer-triple .printer-img-left {
  transform: translate(-60%, -55%) rotate(-12deg) scale(1.02);
}

.printer-card:hover .printer-triple .printer-img-right {
  transform: translate(-40%, -55%) rotate(12deg) scale(1.02);
}

/* Single image hover */
.printer-card:hover .printer-img-single {
  transform: translate(-50%, -55%) scale(1.08);
}

/* Tech Stack */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.tech-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.tech-badge:hover {
  border-color: rgba(0, 212, 255, 0.2);
  color: var(--text-primary);
}

.tech-badge svg {
  width: 20px;
  height: 20px;
  color: var(--accent-cyan);
}

/* Code Blocks */
.code-block {
  position: relative;
  margin: var(--spacing-lg) 0;
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.code-lang {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-copy {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.code-copy:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.code-copy.copied {
  color: var(--accent-green);
}

.code-copy svg {
  width: 14px;
  height: 14px;
}

.code-block pre {
  padding: var(--spacing-lg);
  overflow-x: auto;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Syntax Highlighting */
.code-block .comment { color: var(--text-muted); }
.code-block .keyword { color: var(--accent-purple); }
.code-block .string { color: var(--accent-green); }
.code-block .function { color: var(--accent-cyan); }
.code-block .number { color: var(--accent-orange); }

/* Steps */
.steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.step {
  display: flex;
  gap: var(--spacing-xl);
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bg-primary);
}

.step-content {
  flex: 1;
}

.step-content h4 {
  margin-bottom: var(--spacing-sm);
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  background: rgba(255, 255, 255, 0.02);
  font-weight: 600;
  color: var(--text-primary);
}

td {
  color: var(--text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(0, 212, 255, 0.02);
}

/* Alerts */
.alert {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin: var(--spacing-lg) 0;
}

.alert-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

.alert-info {
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.alert-info .alert-icon {
  color: var(--accent-cyan);
}

.alert-warning {
  background: rgba(249, 115, 22, 0.1);
  border: 1px solid rgba(249, 115, 22, 0.2);
}

.alert-warning .alert-icon {
  color: var(--accent-orange);
}

.alert-success {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.2);
}

.alert-success .alert-icon {
  color: var(--accent-green);
}

/* Footer */
.footer {
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .nav-logo {
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: 0.9375rem;
}

.footer-column h5 {
  margin-bottom: var(--spacing-lg);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-column a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.footer-column a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}

/* Page Header */
.page-header {
  padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  background: var(--gradient-hero);
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--spacing-md);
}

.page-header p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Content Sections */
.content-section {
  padding: var(--spacing-3xl) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.content-section:last-child {
  border-bottom: none;
}

.content-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--spacing-3xl);
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

.content-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar-nav a {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.sidebar-nav a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.sidebar-nav a.active {
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-cyan);
}

/* Feature Detail */
.feature-detail {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.feature-detail h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.feature-detail h3 svg {
  width: 32px;
  height: 32px;
  color: var(--accent-cyan);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-card);
  border-radius: var(--radius-md);
}

.feature-list li svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--accent-green);
  margin-top: 2px;
}

/* Feature Screenshots */
.feature-screenshot {
  margin-top: var(--spacing-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-screenshot img {
  width: 100%;
  height: auto;
  display: block;
}

/* Requirements */
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.requirement-card {
  padding: var(--spacing-xl);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
}

.requirement-card h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.requirement-card h4 svg {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
}

.requirement-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.requirement-card li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.requirement-card li svg {
  width: 16px;
  height: 16px;
  color: var(--accent-green);
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* Responsive adjustments */
@media (max-width: 640px) {
  :root {
    --container-padding: 1rem;
  }

  .hero {
    padding-top: calc(60px + var(--spacing-2xl));
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .hero-logo img {
    max-width: 280px;
  }

  .screenshot-collage {
    height: 250px;
  }

  .collage-item {
    width: 70%;
  }

  /* Hide outer fans on mobile */
  .fan-1, .fan-2, .fan-3, .fan-4,
  .fan-5, .fan-6, .fan-7, .fan-8 {
    display: none;
  }

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

  .step {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}