/* ==========================================================================
   XT 加密货币交易所 - 主样式表
   ========================================================================== */

/* CSS 变量 - 主题色板 */
:root {
  --primary-color: #1E88E5;
  --primary-dark: #1565C0;
  --primary-light: #42A5F5;
  --accent-color: #FF6B35;
  --accent-dark: #E55A2B;
  --success-color: #4CAF50;
  --warning-color: #FF9800;
  --danger-color: #F44336;
  
  --text-primary: #1A1A2E;
  --text-secondary: #4A4A6A;
  --text-muted: #8A8AA0;
  --text-light: #FFFFFF;
  
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FC;
  --bg-tertiary: #EEF1F8;
  --bg-dark: #0F1419;
  --bg-darker: #02050A;
  
  --gradient-primary: linear-gradient(135deg, #1E88E5 0%, #42A5F5 50%, #FF6B35 100%);
  --gradient-dark: linear-gradient(135deg, #0F1419 0%, #1A1A2E 100%);
  --gradient-hero: linear-gradient(160deg, #0F1419 0%, #1A1A2E 40%, #1E3A5F 100%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
  --shadow-glow: 0 0 40px rgba(30, 136, 229, 0.3);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  --container-max: 1280px;
  --header-height: 76px;
}

/* ==========================================================================
   重置样式
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--primary-dark);
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: clamp(1.05rem, 2vw, 1.3rem); }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

/* ==========================================================================
   容器
   ========================================================================== */

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

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.site-logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-weight: 900;
  font-size: 1.2rem;
  box-shadow: var(--shadow-glow);
}

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

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

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

.nav-link {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

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

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

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.mobile-toggle span {
  width: 100%;
  height: 3px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: all var(--transition-normal);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-light);
  box-shadow: 0 4px 16px rgba(30, 136, 229, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(30, 136, 229, 0.45);
  color: var(--text-light);
}

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

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-light);
  border-color: rgba(255, 255, 255, 0.4);
}

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

.btn-large {
  padding: 1.1rem 2.25rem;
  font-size: 1.05rem;
}

.btn-small {
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

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

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

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(30, 136, 229, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero-content {
  color: var(--text-light);
  animation: fadeInUp 1s ease;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-md);
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success-color);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  font-size: clamp(2rem, 5.5vw, 3.75rem);
}

.hero h1 .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-lg);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat-item {
  text-align: left;
}

.hero-stat-value {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 800;
  color: var(--text-light);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  animation: fadeInRight 1.2s ease;
}

.hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
}

.hero-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.hero-float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: floatCard 6s ease-in-out infinite;
}

.hero-float-card.card-1 {
  top: 20px;
  left: -40px;
  animation-delay: 0s;
}

.hero-float-card.card-2 {
  bottom: 30px;
  right: -40px;
  animation-delay: 1s;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.float-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.float-icon.blue {
  background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
  color: var(--primary-color);
}

.float-icon.orange {
  background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
  color: var(--accent-color);
}

.float-content strong {
  display: block;
  font-size: 1rem;
  color: var(--text-primary);
}

.float-content span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ==========================================================================
   Section Common
   ========================================================================== */

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

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

.section-title h2 {
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 4px;
}

.section-title p {
  max-width: 640px;
  margin: var(--spacing-md) auto 0;
  font-size: 1.05rem;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  max-width: 640px;
  margin: 0 auto;
}

/* ==========================================================================
   Partners / Ticker Bar
   ========================================================================== */

.ticker-bar {
  background: var(--bg-secondary);
  padding: var(--spacing-lg) 0;
  overflow: hidden;
}

.ticker-content {
  display: flex;
  gap: var(--spacing-lg);
  animation: ticker 30s linear infinite;
}

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.ticker-symbol {
  font-weight: 700;
  color: var(--text-primary);
}

.ticker-price {
  font-weight: 600;
  color: var(--text-secondary);
}

.ticker-change {
  font-size: 0.85rem;
  font-weight: 600;
}

.ticker-change.up {
  color: var(--success-color);
}

.ticker-change.down {
  color: var(--danger-color);
}

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

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

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

.feature-card {
  background: var(--bg-primary);
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.feature-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ==========================================================================
   Services Section
   ========================================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  align-items: center;
}

.service-card {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.service-card:hover {
  background: var(--bg-tertiary);
  transform: translateX(8px);
}

.service-number {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
}

.service-content h3 {
  margin-bottom: var(--spacing-xs);
}

.service-content p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ==========================================================================
   Stats Section
   ========================================================================== */

.stats {
  background: var(--gradient-primary);
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--text-light);
  margin-bottom: var(--spacing-xs);
  font-weight: 800;
}

.stat-item p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.05rem;
  margin-bottom: 0;
}

/* ==========================================================================
   Detailed Content / Market Info
   ========================================================================== */

.market-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.market-content h2 {
  margin-bottom: var(--spacing-md);
}

.market-content p {
  font-size: 1.05rem;
  margin-bottom: var(--spacing-md);
}

.market-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.market-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.market-feature-check {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--success-color);
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.market-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.market-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* ==========================================================================
   How It Works
   ========================================================================== */

.how-it-works {
  background: var(--bg-secondary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
}

.step-card {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--text-light);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.step-card h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.15rem;
}

.step-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

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

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

.faq-item {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--bg-secondary);
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 2px;
  background: var(--primary-color);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.faq-icon::before {
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.active .faq-icon::after {
  transform: translate(-50%, -50%) rotate(0);
  opacity: 0;
}

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

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 var(--spacing-lg) var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

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

.cta-section {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(30, 136, 229, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-content h2 {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.cta-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
}

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

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

.site-footer {
  background: var(--bg-darker);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-2xl) 0 var(--spacing-md);
}

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

.footer-brand {
  max-width: 340px;
}

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

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: var(--gradient-primary);
  color: var(--text-light);
  transform: translateY(-3px);
}

.footer-column h4 {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* ==========================================================================
   Inner Pages - Common
   ========================================================================== */

.page-hero {
  background: var(--gradient-hero);
  padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-2xl);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(30, 136, 229, 0.15) 0%, transparent 60%);
}

.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.page-hero h1 {
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
  color: var(--primary-light);
}

.breadcrumb span {
  color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   About Page
   ========================================================================== */

.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.about-content h2 {
  margin-bottom: var(--spacing-md);
}

.about-content p {
  margin-bottom: var(--spacing-sm);
  font-size: 1.05rem;
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.mission-card {
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-color);
}

.vision-card {
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--accent-color);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-md);
}

.value-item {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.value-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

/* ==========================================================================
   Products Page
   ========================================================================== */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--spacing-lg);
}

.product-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-image {
  height: 200px;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.1);
}

.product-info {
  padding: var(--spacing-lg);
}

.product-info h3 {
  margin-bottom: var(--spacing-sm);
}

.product-info p {
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
}

.product-features-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--spacing-md);
}

.product-features-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.product-features-list li::before {
  content: '✓';
  color: var(--success-color);
  font-weight: 700;
}

/* ==========================================================================
   News Page
   ========================================================================== */

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.news-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-card-image {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-card-image img {
  transform: scale(1.08);
}

.news-category {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  padding: 0.3rem 0.75rem;
  background: var(--gradient-primary);
  color: var(--text-light);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.news-card-content {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.news-card-content h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
  line-height: 1.5;
}

.news-card-content h3 a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.news-card-content h3 a:hover {
  color: var(--primary-color);
}

.news-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
}

.news-pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--spacing-xl);
}

.pagination-btn {
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.pagination-btn:hover,
.pagination-btn.active {
  background: var(--gradient-primary);
  color: var(--text-light);
}

/* ==========================================================================
   News Detail Page
   ========================================================================== */

.news-detail-wrapper {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--spacing-xl);
}

.news-article {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.news-article-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--bg-tertiary);
}

.news-article-header h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-md);
}

.news-article-meta {
  display: flex;
  gap: var(--spacing-lg);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.news-article-image {
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.news-article-image img {
  width: 100%;
  height: auto;
}

.news-article-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-secondary);
}

.news-article-content p {
  margin-bottom: var(--spacing-md);
}

.news-article-content h2,
.news-article-content h3 {
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.news-article-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-md) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.news-article-content ul {
  padding-left: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.news-article-content ul li {
  list-style: disc;
  margin-bottom: 0.5rem;
}

.sidebar-widget {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.sidebar-widget h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--bg-tertiary);
  position: relative;
}

.sidebar-widget h4::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gradient-primary);
}

.sidebar-news-item {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--bg-secondary);
}

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

.sidebar-news-item img {
  width: 80px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sidebar-news-item a {
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.sidebar-news-item a:hover {
  color: var(--primary-color);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-cloud a {
  padding: 0.35rem 0.85rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.tag-cloud a:hover {
  background: var(--gradient-primary);
  color: var(--text-light);
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info {
  padding: var(--spacing-xl);
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  color: var(--text-light);
}

.contact-info h2 {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.contact-info p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-lg);
}

.contact-info-item {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-content strong {
  display: block;
  margin-bottom: 0.25rem;
}

.contact-info-content span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.contact-form-wrapper {
  padding: var(--spacing-xl);
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.85rem 1rem;
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

/* ==========================================================================
   Scroll Animation
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* ==========================================================================
   Back to Top
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--text-light);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-inner,
  .market-section,
  .about-story,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-stats {
    margin-top: var(--spacing-lg);
  }
  
  .hero-image img {
    height: 360px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .news-detail-wrapper {
    grid-template-columns: 1fr;
  }
  
  .hero-float-card.card-1 {
    left: 10px;
  }
  
  .hero-float-card.card-2 {
    right: 10px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --spacing-3xl: 4rem;
    --spacing-2xl: 3rem;
    --spacing-xl: 2rem;
  }
  
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }
  
  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .header-actions {
    width: 100%;
    justify-content: center;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    min-height: auto;
  }
  
  .hero-inner {
    gap: var(--spacing-xl);
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .hero-float-card {
    position: static;
    margin-top: var(--spacing-sm);
  }
  
  .hero-float-card.card-1,
  .hero-float-card.card-2 {
    position: static;
    display: inline-flex;
    margin: var(--spacing-xs);
  }
  
  .hero-image img {
    height: 280px;
  }
  
  .market-image img,
  .about-image img {
    height: 280px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .news-article {
    padding: var(--spacing-lg);
  }
  
  .contact-info,
  .contact-form-wrapper {
    padding: var(--spacing-lg);
  }
  
  .stats-grid {
    gap: var(--spacing-lg);
  }
  
  .service-card:hover {
    transform: translateX(0);
  }
  
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 1.5rem;
    --spacing-md: 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-badge {
    font-size: 0.75rem;
  }
  
  .features-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }
  
  .stat-item h3 {
    font-size: 1.75rem;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

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

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

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

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