/* 样片定制 · 卡片式 Progressive Hero 预览 */

:root {
  --hero-accent: #89e53d;
  --hero-bg: #000000;
  --hero-card-radius: 2rem;
  --hero-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

html, body.hero-preview-root {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  background: var(--hero-bg);
  color: #fff;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body.hero-preview-root {
  visibility: hidden;
}

body.hero-preview-root.is-ready {
  visibility: visible;
}

/* 黑底舞台 */
.hero-preview {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 108px clamp(16px, 4vw, 40px) 48px;
  box-sizing: border-box;
  background: var(--hero-bg);
}

.hero-preview__back-link {
  position: fixed;
  top: 96px;
  right: clamp(16px, 3vw, 32px);
  z-index: 55;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(8, 8, 8, 0.6);
  backdrop-filter: blur(12px);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

.hero-preview__back-link:hover {
  border-color: rgba(255, 255, 255, 0.22);
  color: #fff;
}

/* 居中卡片 · 21:9 超宽 */
.hero-preview__card {
  position: relative;
  width: min(1280px, 100%);
  aspect-ratio: 21 / 9;
  max-height: min(72vh, calc(100vw * 9 / 21));
  min-height: 0;
  border-radius: var(--hero-card-radius);
  overflow: hidden;
  isolation: isolate;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    0 40px 100px rgba(0, 0, 0, 0.65),
    0 0 80px rgba(137, 229, 61, 0.04);
  opacity: 0;
  transform: translateY(28px) scale(0.97);
  animation: heroCardIn 1.2s var(--hero-ease-out) 0.1s forwards;
}

@keyframes heroCardIn {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hero-preview__card-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: #0a0a0a;
}

.hero-preview__bg-canvas,
.hero-preview__fx-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-preview__fx-canvas {
  z-index: 1;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.42;
}

.hero-preview__depth-grid,
.hero-preview__prism-rings,
.hero-preview__light-blades,
.hero-preview__lens-sweep {
  display: none !important;
}

.hero-preview__halftone {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.38;
  background-image: radial-gradient(circle, rgba(137, 229, 61, 0.58) 0.55px, transparent 0.65px);
  background-size: 5px 5px;
  mix-blend-mode: screen;
}

.hero-preview__grain {
  position: absolute;
  inset: -40%;
  z-index: 3;
  opacity: 0.1;
  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)'/%3E%3C/svg%3E");
  animation: heroGrain 0.45s steps(2) infinite;
}

@keyframes heroGrain {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-3%, 2%); }
}

.hero-preview__card-vignette {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  background:
    radial-gradient(ellipse 85% 75% at 50% 45%, transparent 0%, rgba(0, 0, 0, 0.58) 100%),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.28) 0%, transparent 35%, transparent 65%, rgba(0, 0, 0, 0.48) 100%);
}

/* 卡片内容 */
.hero-preview__content {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 0;
  padding: clamp(1.75rem, 4vw, 3rem) clamp(1.75rem, 5vw, 3.5rem);
  text-align: center;
  box-sizing: border-box;
}

.hero-preview__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: clamp(1rem, 2.5vh, 1.5rem);
  padding: 0.42rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  opacity: 0;
  transform: translateY(12px);
  animation: heroFadeUp 0.9s var(--hero-ease-out) 1.1s forwards;
}

.hero-preview__pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--hero-accent);
  box-shadow: 0 0 12px rgba(137, 229, 61, 0.75);
  animation: heroPulse 2.2s ease-in-out infinite;
}

@keyframes heroPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.82); }
}

.hero-preview__title {
  margin: 0;
  max-width: none;
  font-family: Georgia, 'Times New Roman', 'Songti SC', 'Noto Serif SC', serif;
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  line-height: 1.08;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #fff;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeUp 1s var(--hero-ease-out) 1.35s forwards;
}

.hero-preview__desc {
  margin: 0.85rem auto 0;
  max-width: 32rem;
  font-size: clamp(12px, 1.35vw, 14px);
  line-height: 1.75;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.62);
  opacity: 0;
  transform: translateY(16px);
  animation: heroFadeUp 1s var(--hero-ease-out) 1.65s forwards;
}

.hero-preview__cta-wrap {
  margin-top: clamp(1.25rem, 2.5vh, 1.75rem);
  opacity: 0;
  transform: translateY(18px);
  animation: heroFadeUp 1s var(--hero-ease-out) 1.95s forwards;
}

@keyframes heroFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-preview__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.85rem;
  border: none;
  border-radius: 999px;
  background: #fff;
  color: #0a0a0a;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.3s var(--hero-ease-out), box-shadow 0.3s var(--hero-ease-out), background 0.2s;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.hero-preview__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
  background: #f4f4f5;
}

.hero-preview__cta:active {
  transform: translateY(0);
}

@media (max-width: 640px) {
  .hero-preview {
    padding-top: 96px;
    padding-bottom: 32px;
  }

  .hero-preview__card {
    aspect-ratio: 21 / 9;
    max-height: none;
    border-radius: 1.35rem;
  }

  .hero-preview__content {
    padding: 1.5rem 1.25rem;
  }

  .hero-preview__title {
    max-width: none;
    font-size: clamp(2rem, 9vw, 2.6rem);
  }

  .hero-preview__back-link {
    top: 88px;
    right: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-preview__card,
  .hero-preview__pill,
  .hero-preview__title,
  .hero-preview__desc,
  .hero-preview__cta-wrap,
  .hero-preview__grain,
  .hero-preview__pill-dot {
    animation: none !important;
  }

  .hero-preview__card {
    opacity: 1;
    transform: none;
  }

  .hero-preview__pill,
  .hero-preview__title,
  .hero-preview__desc,
  .hero-preview__cta-wrap {
    opacity: 1;
    transform: none;
  }

  .hero-preview__fx-canvas {
    display: none;
  }

  .hero-preview__card-bg {
    background:
      radial-gradient(circle at 35% 30%, rgba(137, 229, 61, 0.14), transparent 48%),
      radial-gradient(circle at 70% 65%, rgba(95, 78, 42, 0.2), transparent 45%),
      #0a0a0a;
  }
}

/* 登录弹窗 */
#loginModal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(8px);
}

#loginModal.hidden {
  display: none !important;
}

#loginModal .login-panel {
  width: 100%;
  max-width: 28rem;
  margin: 0 1rem;
  padding: 2rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: #18181b;
  box-sizing: border-box;
}

#loginModal .login-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

#loginModal .login-head h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 500;
  color: #fff;
}

#loginModal .login-close {
  border: 0;
  background: transparent;
  color: #a1a1aa;
  cursor: pointer;
  padding: 0;
}

#loginModal .login-close:hover {
  color: #fff;
}

#loginModal label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: #a1a1aa;
}

#loginModal input {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 1rem;
  padding: 0.625rem 1rem;
  border-radius: 0.375rem;
  border: 1px solid #27272a;
  background: #09090b;
  color: #fff;
  font-size: 0.875rem;
  outline: none;
}

#loginModal input:focus {
  border-color: #52525b;
}

#loginModal button[type="submit"] {
  width: 100%;
  padding: 0.625rem 1.5rem;
  border: 0;
  border-radius: 0.375rem;
  background: #fff;
  color: #000;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

#loginModal button[type="submit"]:hover {
  background: #e4e4e7;
}

#loginModal .login-foot {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.875rem;
  color: #a1a1aa;
}

#loginModal .login-foot a {
  color: #fff;
}

#loginModal #loginError {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: #f87171;
}

#loginModal #loginError.hidden {
  display: none;
}