/* ============================================
   SDF1 App Shell — Gold & Obsidian Theme
   ============================================ */

:root {
  --bg-deep: #06060b;
  --bg-surface: #0e0e18;
  --bg-card: #14141f;
  --gold: #c9a44a;
  --gold-dim: #a08339;
  --gold-glow: rgba(201, 164, 74, 0.15);
  --text-primary: #e8e4dc;
  --text-muted: #6b6878;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-deep);
  font-family: 'Noto Sans SC', 'Outfit', sans-serif;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

/* ---- Utilities ---- */
.hidden { display: none !important; }

/* ---- Splash Screen ---- */
.splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.splash.fade-out {
  opacity: 0;
  visibility: hidden;
}

.splash-inner {
  text-align: center;
  animation: splashReveal 0.8s ease forwards;
}

@keyframes splashReveal {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.splash-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 8px var(--gold-glow)); }
  50%      { transform: scale(1.05); filter: drop-shadow(0 0 20px var(--gold-glow)); }
}

.splash-title {
  font-family: 'Outfit', sans-serif;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 4px;
}

.splash-sub {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.splash-loader {
  width: 140px;
  height: 2px;
  background: rgba(201, 164, 74, 0.12);
  border-radius: 2px;
  margin: 36px auto 0;
  overflow: hidden;
}

.loader-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dim), var(--gold));
  border-radius: 2px;
  animation: loaderGrow 2.5s ease forwards;
}

@keyframes loaderGrow {
  0%   { width: 0%; }
  60%  { width: 70%; }
  100% { width: 100%; }
}

/* ---- WebView Container ---- */
.webview-container {
  position: fixed;
  inset: 0;
  z-index: 1;
}

.webview-container web-view,
.webview-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ---- Error Page ---- */
.error-page {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-inner {
  text-align: center;
  padding: 40px;
  animation: fadeUp 0.5s ease forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.error-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 24px;
}

.error-inner h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 22px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.error-inner p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.retry-btn {
  display: inline-block;
  padding: 14px 48px;
  border: 1px solid var(--gold-dim);
  background: transparent;
  color: var(--gold);
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.08em;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.retry-btn:active {
  background: var(--gold);
  color: var(--bg-deep);
  transform: scale(0.97);
}

/* ---- Bottom Bar ---- */
.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 56px;
  padding-bottom: var(--safe-bottom);
  background: linear-gradient(180deg, rgba(14,14,24,0.92) 0%, rgba(14,14,24,0.98) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(201, 164, 74, 0.1);
}

.bar-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 10px;
  cursor: pointer;
  padding: 6px 16px;
  transition: color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.bar-btn svg {
  width: 22px;
  height: 22px;
}

.bar-btn.active {
  color: var(--gold);
}

.bar-btn:active {
  transform: scale(0.9);
}

/* ---- 纹理叠加 ---- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 128px 128px;
  opacity: 0.025;
}