/* ============================================================
   海河照相馆 — 共享样式表
   复古照相馆 + 梦核美学
   ============================================================ */

/* ====== 引入字体 ====== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;700;900&display=swap');

/* ====== CSS 变量 ====== */
:root {
  --bg-warm: #f5efe0;
  --bg-dark: #2c2420;
  --bg-medium: #4a3d32;
  --text-main: #3d3328;
  --text-light: #8a7a6a;
  --text-muted: #b8aa98;
  --accent-blue: #6a8fa0;
  --accent-gold: #c4a46c;
  --accent-red: #a0523a;
  --border-fade: #d4c8b4;
  --shadow-warm: rgba(61, 51, 40, 0.15);
  --font-main: 'Noto Serif SC', 'SimSun', 'STSong', serif;
  --font-mono: 'Courier New', 'Consolas', monospace;
  --max-width: 1000px;
  --header-height: 200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background-color: var(--bg-warm);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ====== 胶片颗粒覆盖 ====== */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* ====== 顶部横幅 ====== */
.site-header {
  position: relative;
  width: 100%;
  height: var(--header-height);
  background: linear-gradient(135deg, #3d3328 0%, #5a4a3a 50%, #3d3328 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 3px solid var(--accent-gold);
}

.site-header::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 2px, rgba(255,255,255,0.02) 2px, rgba(255,255,255,0.02) 4px
  );
  pointer-events: none;
}

.site-header h1 {
  font-size: 2.8rem;
  color: var(--accent-gold);
  letter-spacing: 0.5em;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  z-index: 1;
  font-weight: 900;
}

.site-header .subtitle {
  color: var(--text-light);
  font-size: 0.9rem;
  letter-spacing: 0.3em;
  margin-top: 6px;
  z-index: 1;
  opacity: 0.8;
}

/* 老式计数器 */
.old-counter {
  position: absolute;
  bottom: 10px;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-gold);
  opacity: 0.4;
  letter-spacing: 2px;
  z-index: 1;
}

/* ====== 导航栏 ====== */
.site-nav {
  background: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(196, 164, 108, 0.3);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 8px;
}

.nav-inner::-webkit-scrollbar { display: none; }

.nav-item {
  flex: 0 0 auto;
  list-style: none;
}

.nav-item a {
  display: block;
  text-decoration: none;
  color: var(--text-light);
  padding: 14px 16px;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  transition: all 0.3s;
  border-bottom: 2px solid transparent;
  position: relative;
}

.nav-item a:hover,
.nav-item a.active {
  color: var(--accent-gold);
  border-bottom-color: var(--accent-gold);
  background: rgba(196, 164, 108, 0.06);
}

.nav-item.locked a {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.nav-item.locked a::after {
  content: ' 🔒';
  font-size: 0.7rem;
}

/* ====== 页面内容区 ====== */
.page-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 60px;
  min-height: 60vh;
}

.page-header {
  text-align: center;
  margin-bottom: 40px;
}

.page-header h2 {
  font-size: 1.8rem;
  color: var(--text-main);
  letter-spacing: 0.3em;
  position: relative;
  display: inline-block;
}

.page-header h2::after {
  content: '';
  display: block;
  width: 60%;
  height: 2px;
  background: var(--accent-gold);
  margin: 12px auto 0;
}

.page-header .sub {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 8px;
  letter-spacing: 0.15em;
}

/* ====== 通用按钮 ====== */
.btn {
  display: inline-block;
  padding: 10px 32px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 700;
}

.btn-gold {
  background: var(--accent-gold);
  color: var(--bg-dark);
}

.btn-gold:hover {
  background: #b89450;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(196, 164, 108, 0.3);
}

.btn-gold:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-dark {
  background: var(--text-main);
  color: var(--bg-warm);
}

.btn-dark:hover {
  background: var(--accent-red);
}

/* ====== 照片占位通用 ====== */
.photo-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #d4c8b4, #e8ddd0);
  border: 1px solid var(--border-fade);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.8rem;
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ====== 文本浮现动效 ====== */
.site-footer {
  background: var(--bg-dark);
  padding: 24px 20px;
  text-align: center;
  border-top: 1px solid rgba(196, 164, 108, 0.2);
}

.site-footer p {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

.site-footer .footer-divider {
  width: 40px;
  height: 1px;
  background: var(--accent-gold);
  margin: 10px auto;
  opacity: 0.3;
}

/* ====== 音效开关 ====== */
.sound-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 1px solid rgba(196, 164, 108, 0.3);
  color: var(--accent-gold);
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  box-shadow: 0 2px 12px var(--shadow-warm);
}

.sound-toggle:hover {
  background: var(--accent-gold);
  color: var(--bg-dark);
}

/* ====== 进度条 ====== */
.progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: var(--border-fade);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gold);
  border-radius: 3px;
  transition: width 0.5s ease;
  width: 0%;
}

/* ====== 淡入动画 ====== */
.fade-in {
  animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* ====== 文本浮现动效 ====== */
.text-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 1.2s ease;
}

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

.text-reveal-delay-1 { transition-delay: 0.2s; }
.text-reveal-delay-2 { transition-delay: 0.6s; }
.text-reveal-delay-3 { transition-delay: 1.0s; }
.text-reveal-delay-4 { transition-delay: 1.4s; }
.text-reveal-delay-5 { transition-delay: 1.8s; }

/* ====== 响应式 ====== */
@media (max-width: 768px) {
  :root { --header-height: 150px; }
  .site-header h1 { font-size: 1.8rem; letter-spacing: 0.3em; }
  .site-header .subtitle { font-size: 0.75rem; }
  .nav-item a { padding: 12px 12px; font-size: 0.7rem; }
  .page-container { padding: 30px 16px 40px; }
  .page-header h2 { font-size: 1.4rem; }
}

@media (max-width: 480px) {
  .site-header h1 { font-size: 1.4rem; letter-spacing: 0.2em; }
  .nav-item a { padding: 10px 8px; font-size: 0.65rem; }
}

/* ====== 配音文字浮现动画 ====== */
.vo-cinema {
  max-width: 520px;
  margin: 24px auto;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 1px dashed var(--border-fade);
  border-radius: 6px;
  padding: 24px 20px;
  background: rgba(255,255,255,0.3);
}

.vo-cinema .vo-cinema-line {
  position: absolute;
  text-align: center;
  opacity: 0;
  transition: opacity 1.2s ease;
  pointer-events: none;
  width: 100%;
  padding: 0 16px;
}

.vo-cinema .vo-cinema-line.visible { opacity: 1; }
.vo-cinema .vo-cinema-line.fading { opacity: 0; }

.vo-cinema .vo-cinema-line .line-main {
  font-size: 0.95rem;
  color: var(--text-main);
  letter-spacing: 0.1em;
  line-height: 1.8;
}

.vo-cinema .vo-cinema-line .line-speaker {
  font-size: 0.7rem;
  color: var(--accent-gold);
  letter-spacing: 0.15em;
  margin-bottom: 4px;
  font-weight: 700;
}