/* ProPad Pro - Commercial Landing Page Styles */
/* Design System: Apple-inspired, Premium, Minimal */

/* ========================================
   CSS Variables & Design Tokens
   ======================================== */

:root {
  /* Light Theme */
  --bg-primary: #FAFAFA;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F5F5F5;
  --border-color: #E5E5E5;
  --text-primary: #1A1A1A;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  
  /* Accent Colors */
  --accent-primary: #D4A574;
  --accent-secondary: #4A90D9;
  --accent-success: #10B981;
  
  /* 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;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'PingFang SC', 'Source Han Sans', sans-serif;
  --font-mono: 'Roboto Mono', 'SF Mono', monospace;
  
  /* Animation */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  
  /* Layout */
  --header-height: 64px;
  --container-max: 1200px;
  --border-radius: 8px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0A0A0A;
  --bg-secondary: #1A1A1A;
  --bg-tertiary: #2A2A2A;
  --border-color: #2A2A2A;
  --text-primary: #FAFAFA;
  --text-secondary: #A0A0A0;
  --text-tertiary: #666666;
}

/* System Preference Detection */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0A0A0A;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #2A2A2A;
    --border-color: #2A2A2A;
    --text-primary: #FAFAFA;
    --text-secondary: #A0A0A0;
    --text-tertiary: #666666;
  }
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background: var(--accent-primary);
  color: white;
}

/* ========================================
   Layout & Container
   ======================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

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

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.9375rem;
  font-weight: 400;
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: #c49560;
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-tertiary);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(20px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
}

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

.logo-bg {
  fill: var(--accent-primary);
}

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

.nav-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

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

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

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
}

.theme-toggle .sun-icon {
  display: block;
}

.theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon,
:root:not([data-theme="light"]) .theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon,
:root:not([data-theme="light"]) .theme-toggle .moon-icon {
  display: block;
}

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--duration-fast) var(--ease-out);
}

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

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

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

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-out);
  z-index: 999;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.mobile-nav-links a {
  font-size: 1.25rem;
  color: var(--text-primary);
}

.mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(212, 165, 116, 0.15), transparent),
              radial-gradient(ellipse 60% 40% at 80% 60%, rgba(74, 144, 217, 0.1), transparent);
}

[data-theme="dark"] .hero-gradient {
  background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(212, 165, 116, 0.08), transparent),
              radial-gradient(ellipse 60% 40% at 80% 60%, rgba(74, 144, 217, 0.05), transparent);
}

.hero-particles {
  position: absolute;
  inset: 0;
  opacity: 0.5;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  padding: var(--spacing-4xl) 0;
}

.hero-text {
  max-width: 560px;
}

.hero-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-primary);
  background: rgba(212, 165, 116, 0.1);
  border: 1px solid rgba(212, 165, 116, 0.2);
  border-radius: 100px;
  margin-bottom: var(--spacing-lg);
}

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

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
}

.pad-container {
  position: relative;
  width: 320px;
  height: 420px;
}

.pad {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--bg-secondary);
  border-radius: 20px;
  box-shadow: 0 50px 100px -20px rgba(0, 0, 0, 0.25),
              0 30px 60px -30px rgba(0, 0, 0, 0.3),
              inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: transform var(--duration-slow) var(--ease-out);
}

.pad-screen {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  border-radius: 12px;
  overflow: hidden;
}

.pad-content {
  width: 100%;
  height: 100%;
  padding: var(--spacing-md);
}

.pad-ui {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.pad-header {
  margin-bottom: var(--spacing-lg);
}

.pad-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;
  font-size: 0.875rem;
}

.status-icons {
  display: flex;
  gap: var(--spacing-xs);
}

.pad-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.pad-clock {
  font-size: 4rem;
  font-weight: 200;
  color: white;
  letter-spacing: -0.02em;
  line-height: 1;
}

.pad-date {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--spacing-xs);
}

.pad-widgets {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  width: 100%;
}

.widget {
  flex: 1;
  background: rgba(255, 255, 255, 0.1);
  padding: var(--spacing-md);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.widget-icon {
  font-size: 1.5rem;
}

.widget-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

.widget-value {
  font-size: 1.25rem;
  color: white;
  font-weight: 500;
}

.battery-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.battery-fill {
  height: 100%;
  background: var(--accent-success);
  border-radius: 2px;
}

.pad-frame {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  pointer-events: none;
}

.pad-shadow {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 40px;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.3), transparent 70%);
  filter: blur(20px);
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-tertiary);
  font-size: 0.875rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ========================================
   Sections Common Styles
   ======================================== */

section {
  padding: var(--spacing-5xl) 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--spacing-4xl);
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: var(--spacing-md);
}

.section-title {
  color: var(--text-primary);
}

/* ========================================
   Features Section
   ======================================== */

.features {
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.feature-card {
  padding: var(--spacing-xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 12px;
  margin-bottom: var(--spacing-lg);
  color: var(--accent-primary);
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   Showcase / Slider Section
   ======================================== */

.showcase {
  background: var(--bg-primary);
}

.showcase-slider {
  max-width: 900px;
  margin: 0 auto;
}

.slider-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.slider-track {
  display: flex;
  transition: transform var(--duration-slow) var(--ease-out);
}

.slide {
  flex: 0 0 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.slide.active {
  opacity: 1;
  visibility: visible;
}

.slide-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  padding: var(--spacing-3xl);
  align-items: center;
}

.slide-image {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
}

.product-hero {
  width: 200px;
  height: 260px;
  perspective: 1000px;
}

.product-pad {
  width: 100%;
  height: 100%;
  background: linear-gradient(145deg, var(--bg-tertiary), var(--bg-secondary));
  border-radius: 16px;
  border: 1px solid var(--border-color);
  position: relative;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
}

.product-pad::before {
  content: '';
  position: absolute;
  inset: 8px;
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  border-radius: 10px;
}

.product-pad-front { transform: rotateY(-5deg) rotateX(5deg); }
.product-pad-side { transform: rotateY(-30deg) rotateX(5deg); }
.product-pad-back { transform: rotateY(180deg); }
.product-pad-angle { transform: rotateY(-15deg) rotateX(10deg); }

.slide-info h3 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.slide-info p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.slider-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.slider-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.slider-dots {
  display: flex;
  gap: var(--spacing-sm);
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-color);
  transition: all var(--duration-fast) var(--ease-out);
}

.slider-dot.active {
  background: var(--accent-primary);
  width: 24px;
  border-radius: 4px;
}

/* ========================================
   Specs Comparison Section
   ======================================== */

.specs {
  background: var(--bg-secondary);
}

.specs-table {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.specs-header,
.specs-row,
.specs-footer {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
}

.specs-header {
  background: var(--bg-tertiary);
}

.specs-col {
  padding: var(--spacing-lg);
  text-align: center;
}

.specs-col.specs-label {
  text-align: left;
  font-weight: 500;
  color: var(--text-primary);
}

.specs-header .specs-col {
  font-weight: 500;
}

.spec-card {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  position: relative;
}

.spec-card.recommended {
  background: rgba(212, 165, 116, 0.1);
  border: 1px solid var(--accent-primary);
}

.spec-badge {
  position: absolute;
  top: -8px;
  right: 50%;
  transform: translateX(50%);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.6875rem;
  background: var(--accent-primary);
  color: white;
  border-radius: 4px;
}

.spec-card h4 {
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
}

.spec-price {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.specs-row {
  border-bottom: 1px solid var(--border-color);
}

.specs-row:last-child {
  border-bottom: none;
}

.specs-col.highlight {
  font-weight: 500;
  color: var(--accent-primary);
}

.specs-footer {
  background: var(--bg-tertiary);
}

/* ========================================
   Testimonials Section
   ======================================== */

.testimonials {
  background: var(--bg-primary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.testimonial-card {
  padding: var(--spacing-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.1);
}

.testimonial-rating {
  margin-bottom: var(--spacing-md);
}

.star {
  color: var(--accent-primary);
  font-size: 1rem;
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-name {
  font-weight: 500;
  color: var(--text-primary);
  display: block;
}

.author-role {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ========================================
   Pricing Section
   ======================================== */

.pricing {
  background: var(--bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  align-items: start;
}

.pricing-card {
  position: relative;
  padding: var(--spacing-2xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.1);
}

.pricing-card.recommended {
  border-color: var(--accent-primary);
  transform: scale(1.05);
}

.pricing-card.recommended:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--accent-primary);
  color: white;
  border-radius: 100px;
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
}

.pricing-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.pricing-price {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 300;
  vertical-align: top;
  color: var(--text-secondary);
}

.price-value {
  font-size: 3rem;
  font-weight: 200;
  letter-spacing: -0.02em;
}

.pricing-features {
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.pricing-features svg {
  color: var(--accent-success);
  flex-shrink: 0;
}

/* ========================================
   FAQ Section
   ======================================== */

.faq {
  background: var(--bg-primary);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) 0;
  font-size: 1rem;
  font-weight: 400;
  text-align: left;
  color: var(--text-primary);
  transition: color var(--duration-fast) var(--ease-out);
}

.faq-question:hover {
  color: var(--accent-primary);
}

.faq-icon {
  transition: transform var(--duration-normal) var(--ease-out);
  color: var(--text-tertiary);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-out);
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding-bottom: var(--spacing-lg);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
  background: var(--bg-secondary);
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-title {
  margin-bottom: var(--spacing-md);
}

.cta-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.cta-form {
  margin-bottom: var(--spacing-md);
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
}

.newsletter-form input::placeholder {
  color: var(--text-tertiary);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.cta-note {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ========================================
   Newsletter Section
   ======================================== */

.newsletter {
  background: var(--bg-primary);
  padding: var(--spacing-4xl) 0;
}

.newsletter-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.newsletter-text h3 {
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
}

.newsletter-text p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.newsletter .newsletter-form {
  max-width: 400px;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background: var(--bg-tertiary);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-3xl);
  border-bottom: 1px solid var(--border-color);
}

.footer-brand {
  max-width: 240px;
}

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

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

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

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-contact h4 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

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

.footer-contact li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-contact svg {
  color: var(--text-tertiary);
}

.footer-contact a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-xl);
}

.copyright {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

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

/* ========================================
   Reveal Animations
   ======================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive Styles
   ======================================== */

/* Tablet */
@media (max-width: 1023px) {
  .nav-links {
    display: none;
  }
  
  .nav-actions {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .hero-text {
    max-width: 100%;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .slide-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .specs-header,
  .specs-row,
  .specs-footer {
    grid-template-columns: 1fr;
  }
  
  .specs-col.specs-label {
    text-align: center;
    background: var(--bg-tertiary);
    font-weight: 500;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
  
  .pricing-card.recommended {
    transform: none;
  }
  
  .pricing-card.recommended:hover {
    transform: translateY(-4px);
  }
  
  .newsletter-content {
    flex-direction: column;
    text-align: center;
  }
  
  .newsletter .newsletter-form {
    max-width: 100%;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-brand {
    max-width: 100%;
    text-align: center;
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--spacing-2xl));
    padding-bottom: var(--spacing-4xl);
  }
  
  .pad-container {
    width: 240px;
    height: 320px;
  }
  
  .pad-clock {
    font-size: 3rem;
  }
  
  .hero-scroll {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-card {
    padding: var(--spacing-lg);
  }
  
  .slide-content {
    padding: var(--spacing-xl);
  }
  
  .slide-info {
    order: -1;
  }
  
  .product-hero {
    width: 160px;
    height: 210px;
  }
  
  .testimonial-card {
    padding: var(--spacing-lg);
  }
  
  .pricing-card {
    padding: var(--spacing-xl);
  }
  
  .pricing-features li {
    font-size: 0.875rem;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form button {
    width: 100%;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

/* Touch devices - disable hover effects */
@media (hover: none) {
  .feature-card:hover,
  .testimonial-card:hover,
  .pricing-card:hover {
    transform: none;
    box-shadow: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
  
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Print styles */
@media print {
  .header,
  .mobile-menu,
  .hero-scroll,
  .slider-controls,
  .cta,
  .newsletter,
  .footer-social {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  section {
    padding: 1rem 0;
    page-break-inside: avoid;
  }
}