/* ==========================================
   CSS Variables & Global
   ========================================== */
:root {
  --color-bg-dark: #0a0a0a;
  --color-bg-section: #111111;
  --color-bg-section-alt: #0d0d0d;
  --color-bg-card: #1a1a1a;
  --color-bg-nav: rgba(10, 10, 10, 0.85);
  --color-bg-nav-solid: rgba(10, 10, 10, 0.95);
  --color-primary: #e8b84b;
  --color-primary-hover: #f0c96a;
  --color-text: #f0f0f0;
  --color-text-secondary: #b0b0b0;
  --color-text-muted: #777777;
  --color-border: #2a2a2a;
  --color-accent: #c9a84c;
  --font-heading: 'Inter', 'Noto Sans SC', 'Noto Sans TC', 'Noto Sans JP', sans-serif;
  --font-body: 'Noto Sans SC', 'Noto Sans TC', 'Noto Sans JP', 'Inter', sans-serif;
  --max-width: 1200px;
  --nav-height: 70px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease;
}

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

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

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

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

/* ==========================================
   Utility
   ========================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-title {
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 60px;
  color: var(--color-text);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  margin: 16px auto 0;
  border-radius: 2px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-heading);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  letter-spacing: 0.5px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #0a0a0a;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: #0a0a0a;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 184, 75, 0.3);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #0a0a0a;
  transform: translateY(-2px);
}

/* ==========================================
   Navigation
   ========================================== */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background-color: var(--color-bg-nav);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  transition: background-color var(--transition-normal);
}

.nav-header.scrolled {
  background-color: var(--color-bg-nav-solid);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  margin-right: auto; /* 将 logo 推到最左侧，menu 自然靠右 */
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-menu a {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 4px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

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

.nav-menu a:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-normal);
  border-radius: 1px;
}

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

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

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

/* ==========================================
   Hero Section
   ========================================== */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  /* 背景图统一设置，不受主题影响 */
  background-image: url('../assets/images/image.png');
  background-repeat: repeat;
  background-size: auto;
  background-position: center;
  overflow: hidden;
}

/* 使用伪元素添加主题相关的蒙层 */
.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10, 10, 10, 0.7) 0%, rgba(26, 26, 46, 0.7) 50%, rgba(10, 10, 10, 0.7) 100%);
  pointer-events: none;
  z-index: 0;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(232, 184, 75, 0.05) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(100, 100, 200, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 24px;
}

.hero-welcome {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--color-text-secondary);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.2s;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: 3px;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.4s;
}

.hero-subtitle {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  letter-spacing: 6px;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.6s;
}

.hero-cta {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.8s;
}

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

/* ==========================================
   Games Section
   ========================================== */
.games-section {
  background-color: var(--color-bg-section);
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.game-card {
  background-color: var(--color-bg-card);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
}

.game-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  border-color: var(--color-primary);
}

.game-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background-color: #222;
}

.game-card-body {
  padding: 24px;
}

.game-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.game-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.game-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

.game-card-link:hover {
  color: var(--color-primary-hover);
  gap: 12px;
}

.game-card-link::after {
  content: '→';
  transition: inherit;
}

/* ==========================================
   News Section
   ========================================== */
.news-section {
  background-color: var(--color-bg-section-alt);
}

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

.news-card {
  background-color: var(--color-bg-card);
  border-radius: 10px;
  padding: 28px;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  position: relative;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 184, 75, 0.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.news-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-card-desc {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================
   About Section
   ========================================== */
.about-section {
  background-color: var(--color-bg-section);
  text-align: center;
}

/* --- 公司简介 --- */
.about-intro {
  margin-bottom: 80px;
}

.about-intro-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto 40px;
  text-align: center;
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 800px;
  margin: 0 auto;
}

.about-card {
  background-color: var(--color-bg-card);
  border-radius: 10px;
  padding: 32px 28px;
  text-align: left;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  transition: all var(--transition-normal);
}

.about-card:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 184, 75, 0.3);
  border-left-color: var(--color-primary);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.about-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.about-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- 核心价值观 --- */
.about-values {
  margin-bottom: 80px;
}

.values-list {
  max-width: 620px;
  margin: 0 auto;
}

.value-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background-color: var(--color-bg-card);
  padding: 18px 24px;
  border-radius: 10px;
  margin-bottom: 14px;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.value-item:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 184, 75, 0.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.value-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-title {
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 4.5em;
  text-align: left;
}

.value-sep {
  font-size: 0.93rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  margin: 0 6px;
}

.value-desc {
  font-size: 0.93rem;
  color: var(--color-text-secondary);
  text-align: left;
  line-height: 1.5;
}

/* --- 联系我们 --- */
.about-contact {
  margin-bottom: 0;
}

.contact-list {
  max-width: 620px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-bg-card);
  padding: 20px 24px;
  border-radius: 10px;
  margin-bottom: 14px;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.contact-item:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 184, 75, 0.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.contact-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(232, 184, 75, 0.1);
}

.contact-info {
  display: flex;
  align-items: center;
  gap: 4px;
  text-align: left;
}

.contact-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

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

/* ==========================================
   Footer
   ========================================== */
.footer-section {
  background-color: #050505;
  padding: 60px 0 30px;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  margin-bottom: 40px;
  gap: 40px;
}

.footer-brand {
  flex-shrink: 0;
  text-align: center;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.footer-brand-company {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-address {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-icp {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-icp a {
  color: var(--color-text-muted);
}

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

/* ==========================================
   White Theme Override
   ========================================== */
body.theme-white {
  --color-bg-dark: #ffffff;
  --color-bg-section: #f5f5f5;
  --color-bg-section-alt: #fafafa;
  --color-bg-card: #ffffff;
  --color-bg-nav: rgba(255, 255, 255, 0.85);
  --color-bg-nav-solid: rgba(255, 255, 255, 0.95);
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-muted: #999999;
  --color-border: #e0e0e0;
}

/* Hero 区块白色主题 - 只修改蒙层颜色，背景图保持不变 */
body.theme-white .hero-section::after {
  background: linear-gradient(135deg, rgba(240, 240, 240, 0.85) 0%, rgba(232, 234, 246, 0.85) 50%, rgba(240, 240, 240, 0.85) 100%);
}

body.theme-white .hero-section::before {
  background:
    radial-gradient(ellipse at 20% 50%, rgba(232, 184, 75, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(100, 100, 200, 0.08) 0%, transparent 60%);
}

/* Navigation 白色主题 */
body.theme-white .nav-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* 按钮白色主题 */
body.theme-white .btn-primary {
  color: #ffffff;
}

body.theme-white .btn-primary:hover {
  color: #ffffff;
}

/* Game Card 白色主题 */
body.theme-white .game-card {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.theme-white .game-card-image {
  background-color: #e0e0e0;
}

body.theme-white .game-card:hover {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
}

/* News Card 白色主题 */
body.theme-white .news-card {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.theme-white .news-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

/* Footer 白色主题 */
body.theme-white .footer-section {
  background-color: #f0f0f0;
}