/* ==========================================================================
   视频解析站 · 样式
   沿用个人主页的视觉：近黑 #05060A 底 + 暖金 #E4C063 强调色
   ========================================================================== */

:root {
  color-scheme: dark;

  --bg: #05060A;
  --surface: rgba(16, 18, 26, 0.72);
  --surface-line: rgba(244, 241, 234, 0.10);
  --accent: #E4C063;
  --accent-soft: rgba(228, 192, 99, 0.14);
  --accent-line: rgba(228, 192, 99, 0.45);
  --text: #F4F1EA;
  --text-soft: #D8D3C7;
  --text-dim: #8C8778;
  --danger: #E8735F;
  --ok: #7FC08A;
  --hairline: rgba(244, 241, 234, 0.12);

  --radius: 14px;
  --gutter: clamp(1.25rem, 5vw, 5rem);
  --nav-h: 4rem;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--nav-h);
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 背景光晕：纯装饰，给近黑底色一点层次 */
.glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(50rem 30rem at 15% -10%, rgba(228, 192, 99, 0.10), transparent 60%),
    radial-gradient(40rem 26rem at 100% 0%, rgba(228, 192, 99, 0.05), transparent 55%);
}

/* --------------------------------------------------------------------------
   顶部导航
   -------------------------------------------------------------------------- */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(5, 6, 10, 0.82);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--hairline);
}

.site-nav__inner {
  height: 100%;
  max-width: 56rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-nav__brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.site-nav__brand:hover {
  color: var(--accent);
}

.site-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__link {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.site-nav__link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent-line);
}

/* --------------------------------------------------------------------------
   主布局
   -------------------------------------------------------------------------- */
.page {
  max-width: 56rem;
  margin: 0 auto;
  padding: calc(var(--nav-h) + clamp(2rem, 7vh, 4.5rem)) var(--gutter) 4rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4.5vw, 2.75rem);
  backdrop-filter: blur(6px);
}

.page__title {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page__title::after {
  content: "";
  display: block;
  width: 2.5rem;
  height: 2px;
  margin: 0.85rem 0 0;
  background: var(--accent);
}

.page__subtitle {
  margin: 0.9rem 0 0;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   表单
   -------------------------------------------------------------------------- */
.form {
  margin-top: clamp(1.75rem, 5vw, 2.5rem);
}

.form__label {
  display: block;
  margin-bottom: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-soft);
  letter-spacing: 0.04em;
}

.form__row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.form__input {
  flex: 1 1 20rem;
  min-width: 0;
  padding: 0.85rem 1rem;
  background: rgba(5, 6, 10, 0.65);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.form__input::placeholder {
  color: rgba(140, 135, 120, 0.75);
}

.form__input:focus {
  outline: none;
  border-color: var(--accent-line);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form__button,
.result__copy {
  flex: 0 0 auto;
  padding: 0.85rem 1.9rem;
  border: 1px solid var(--accent-line);
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), opacity 0.2s var(--ease);
}

.form__button:hover:not(:disabled),
.result__copy:hover:not(:disabled) {
  background: var(--accent);
  color: #14110A;
}

.form__button:disabled,
.result__copy:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form__button:focus-visible,
.result__copy:focus-visible,
.form__input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.form__hint {
  margin: 0.85rem 0 0;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.form__hint code {
  padding: 0.1em 0.4em;
  background: rgba(244, 241, 234, 0.07);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--text-soft);
}

/* --------------------------------------------------------------------------
   状态提示
   -------------------------------------------------------------------------- */
.status {
  margin-top: 1.5rem;
  padding: 0.85rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--hairline);
  background: rgba(244, 241, 234, 0.04);
  font-size: 0.9rem;
  color: var(--text-soft);
}

.status--loading {
  border-color: var(--accent-line);
  color: var(--accent);
}

.status--error {
  border-color: rgba(232, 115, 95, 0.5);
  color: var(--danger);
}

.status--ok {
  border-color: rgba(127, 192, 138, 0.45);
  color: var(--ok);
}

/* 加载中的三个点 */
.status__dots::after {
  content: "";
  animation: dots 1.4s steps(4, end) infinite;
}

@keyframes dots {
  0% {
    content: "";
  }

  25% {
    content: "·";
  }

  50% {
    content: "··";
  }

  75% {
    content: "···";
  }
}

/* --------------------------------------------------------------------------
   结果区
   -------------------------------------------------------------------------- */
.result {
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--hairline);
}

.result__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  word-break: break-word;
}

.result__meta {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
}

.result__label {
  display: block;
  margin: 1.5rem 0 0.6rem;
  font-size: 0.85rem;
  color: var(--text-soft);
  letter-spacing: 0.04em;
}

.result__urlrow {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.result__url {
  flex: 1 1 20rem;
  min-width: 0;
  padding: 0.85rem 1rem;
  background: rgba(5, 6, 10, 0.65);
  border: 1px solid var(--accent-line);
  border-radius: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.result__url:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.result__tip {
  margin: 1.1rem 0 0;
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* 多P投稿的提示（第几P、怎么换集）—— 用暖金色区分，比普通提示更显眼 */
#multi-hint {
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--accent-line);
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   使用说明
   -------------------------------------------------------------------------- */
.notes {
  margin-top: clamp(2.5rem, 7vw, 4rem);
}

.notes__title {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: 0.08em;
}

.notes__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.notes__item {
  display: flex;
  gap: 0.9rem;
  align-items: baseline;
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.notes__num {
  flex: 0 0 auto;
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--accent-line);
  border-radius: 50%;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.notes__item strong {
  color: var(--text-soft);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.site-footer {
  padding: 2rem var(--gutter) 3rem;
  text-align: center;
  font-size: 0.78rem;
  color: rgba(140, 135, 120, 0.7);
  border-top: 1px solid var(--hairline);
}

.site-footer p {
  margin: 0;
}

/* --------------------------------------------------------------------------
   小屏适配
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  .form__row,
  .result__urlrow {
    flex-direction: column;
  }

  .form__button,
  .result__copy {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .status__dots::after {
    content: "···";
  }
}