/* ============ Image2Splat · 深色玻璃主题（与 image-metadata-cleaner 同一设计系统） ============ */

:root {
  --bg: #0a0a0c;
  --topbar-h: 60px; /* 与 image-metadata-cleaner / rvc-sound-clone 顶栏同一高度 */
  --glass: rgba(13, 14, 18, 0.62);
  --glass-strong: rgba(16, 17, 22, 0.82);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f2f3f6;
  --text-2: rgba(233, 236, 242, 0.66);
  --text-3: rgba(233, 236, 242, 0.42);
  --ok: #3ddc97;
  --danger: #ff7a7a;
  --warn: #ffce5c;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

/* 显式 display 会压过 [hidden] 的 UA 样式，这里统一收紧 */
[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  padding-top: var(--topbar-h); /* fixed 顶栏高度补偿 */
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'PingFang SC', 'Helvetica Neue', 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

#bgCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  display: block;
  /* 独立合成层：移动端滚动时 fixed 元素不再随页面抖动/位移 */
  transform: translateZ(0);
  backface-visibility: hidden;
}

::selection { background: rgba(255, 255, 255, 0.22); }

a { color: inherit; }

button, input, select { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.55);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ============ 顶栏 ============ */

.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 14px;
  height: var(--topbar-h);
  padding: 0 24px;
  background: rgba(10, 10, 12, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-width: 0;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.brand-text strong { font-size: 15px; font-weight: 650; letter-spacing: 0.2px; }
.brand-text small { font-size: 11px; color: var(--text-3); }

.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-2);
  cursor: pointer;
  text-decoration: none;
  font-size: 13px;
  transition: background 0.15s ease, color 0.15s ease;
}

.icon-btn:hover { background: rgba(255, 255, 255, 0.1); color: var(--text); }
.icon-btn svg { width: 17px; height: 17px; }

/* ============ 主体布局 ============ */

main {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: clamp(28px, 6vw, 64px) clamp(16px, 4vw, 32px) 40px;
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 4vw, 32px);
}

.hero { text-align: center; display: flex; flex-direction: column; gap: 14px; align-items: center; }

.hero h1 {
  margin: 0;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.3px;
  font-weight: 700;
}

.hero p {
  margin: 0;
  max-width: 620px;
  color: var(--text-2);
  font-size: clamp(14px, 2.4vw, 16px);
}

/* ============ 玻璃面板 ============ */

.panel {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: clamp(16px, 3vw, 24px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ============ 拖拽区 ============ */

.dropzone {
  border: 1.5px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  padding: clamp(26px, 6vw, 46px) 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.dropzone:hover { border-color: rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.05); }
.dropzone.drag { border-color: #fff; background: rgba(255, 255, 255, 0.09); transform: scale(1.005); }

.dropzone .dz-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: #e8ebf1;
  margin-bottom: 4px;
}

.dropzone .dz-icon svg { width: 26px; height: 26px; }

.dropzone h3 { margin: 0; font-size: 16.5px; font-weight: 600; }
.dropzone p { margin: 0; font-size: 13px; color: var(--text-3); }

/* ============ 选项区 ============ */

.options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px 18px;
  align-items: end;
}

.opt { display: flex; flex-direction: column; gap: 7px; min-width: 0; }

.opt > label { font-size: 12px; color: var(--text-3); letter-spacing: 0.2px; }

.opt-row { display: flex; align-items: center; gap: 10px; }

.opt output {
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  color: var(--text-2);
  min-width: 34px;
  text-align: right;
}

input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 4px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.16);
  outline: none;
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #f4f5f7;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

input[type='range']::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #f4f5f7;
  border: none;
  cursor: pointer;
}

select {
  appearance: none;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 34px 8px 12px;
  font-size: 13.5px;
  cursor: pointer;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239aa0aa' stroke-width='2.4' stroke-linecap='round'%3e%3cpath d='M6 9l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px;
  width: 100%;
}

select:hover { border-color: var(--line-strong); }
select option { background: #14151a; color: var(--text); }

/* ============ 操作按钮 ============ */

.actions { display: flex; flex-wrap: wrap; gap: 10px; }

.btn {
  appearance: none;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.12s ease, opacity 0.15s ease, background 0.15s ease;
  text-decoration: none;
}

.btn:active { transform: scale(0.98); }

.btn-primary { background: #f2f3f6; color: #0a0a0c; }
.btn-primary:hover:not(:disabled) { background: #ffffff; }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--text-2);
}

.btn-ghost:hover:not(:disabled) { background: rgba(255, 255, 255, 0.1); color: var(--text); }
.btn-ghost:disabled { opacity: 0.4; cursor: not-allowed; }

/* ============ 进度条 ============ */

.progress-wrap { display: flex; align-items: center; gap: 12px; }

.progress {
  flex: 1;
  height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.progress > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 99px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.55), #f2f3f6);
  transition: width 0.25s ease;
}

.progress-wrap output { font-size: 12.5px; color: var(--text-3); font-variant-numeric: tabular-nums; }

/* ============ 源与深度 ============ */

.list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-top: 2px;
  border-top: 1px solid var(--line);
}

.list-head h2 { margin: 14px 0 0; font-size: 13px; font-weight: 600; color: var(--text-3); letter-spacing: 0.6px; text-transform: uppercase; }
.list-head .count { margin-top: 14px; font-size: 12.5px; color: var(--text-3); font-variant-numeric: tabular-nums; }

.list-empty { margin: 4px 0 0; color: var(--text-3); font-size: 13.5px; text-align: center; padding: 18px 0; }

.thumbs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.thumbs figure { margin: 0; display: flex; flex-direction: column; gap: 5px; }

.thumbs canvas {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
}

.thumbs figcaption { font-size: 11.5px; color: var(--text-3); text-align: center; }

.video-strip { display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 4px; scrollbar-width: thin; }
.video-strip::-webkit-scrollbar { height: 8px; }
.video-strip::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.14); border-radius: 99px; }

.video-strip .vf {
  flex: 0 0 auto;
  cursor: pointer;
  border-radius: 9px;
  border: 1.5px solid var(--line);
  padding: 0;
  background: rgba(255, 255, 255, 0.03);
  position: relative;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.video-strip .vf:hover { border-color: var(--line-strong); }
.video-strip .vf.is-sel { border-color: #f2f3f6; background: rgba(255, 255, 255, 0.09); }
.video-strip .vf canvas { width: 76px; height: 48px; object-fit: cover; border-radius: 7px; display: block; }
.video-strip .vf .ft {
  position: absolute; left: 4px; bottom: 3px;
  font-size: 10px; line-height: 1.5;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 4px; padding: 0 4px;
  font-family: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--text-2);
}


/* ============ 多图视图 ============ */

.views { display: flex; flex-direction: column; gap: 12px; }

.views-list { display: flex; gap: 8px; overflow-x: auto; padding: 2px 2px 4px; scrollbar-width: thin; }
.views-list::-webkit-scrollbar { height: 8px; }
.views-list::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.14); border-radius: 99px; }

.views-list .vf {
  flex: 0 0 auto;
  cursor: pointer;
  border-radius: 9px;
  border: 1.5px solid var(--line);
  padding: 0;
  background: rgba(255, 255, 255, 0.03);
  position: relative;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.views-list .vf:hover { border-color: var(--line-strong); }
.views-list .vf canvas { width: 88px; height: 56px; object-fit: cover; border-radius: 7px; display: block; }
.views-list .vf .ft {
  position: absolute; left: 4px; bottom: 3px;
  font-size: 10px; line-height: 1.5;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 4px; padding: 0 4px;
  font-family: ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--text-2);
}
.views-list .vf .rm {
  position: absolute; top: 2px; right: 2px;
  width: 17px; height: 17px; border-radius: 50%;
  border: none; background: rgba(0, 0, 0, 0.7); color: var(--muted, #8b94a7);
  font-size: 11px; line-height: 1; cursor: pointer; display: grid; place-items: center;
}
.views-list .vf .rm:hover { background: rgba(255, 122, 122, 0.35); color: #ffb3b3; }

.views-note { margin: 0; color: var(--text-3); font-size: 12.5px; }

/* ============ 3D 预览（终端窗口式面板） ============ */

.logpanel { padding: 0; overflow: hidden; gap: 0; }

.logpanel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
}

.logpanel-title { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.logpanel-title strong { font-weight: 600; }

.log-dots { display: inline-flex; gap: 5px; }
.log-dots i { width: 9px; height: 9px; border-radius: 50%; }
.log-dots i:nth-child(1) { background: #ff5f57; }
.log-dots i:nth-child(2) { background: #febc2e; }
.log-dots i:nth-child(3) { background: #28c840; }

.log-count { font-size: 11px; color: var(--text-3); font-variant-numeric: tabular-nums; }

.logpanel-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.log-hint { font-size: 11.5px; color: var(--text-3); }

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-2);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.14s ease, color 0.14s ease;
}

.btn-icon:hover { background: rgba(255, 255, 255, 0.12); color: var(--text); }
.btn-icon.is-active { border-color: var(--line-strong); background: rgba(255, 255, 255, 0.12); color: var(--text); }

.vp-body {
  position: relative;
  height: clamp(300px, 58vw, 520px);
  background: rgba(0, 0, 0, 0.35);
}

.vp-body canvas { width: 100% !important; height: 100% !important; display: block; }

/* ============ 汇总 ============ */

.summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat b { font-size: 19px; font-weight: 650; font-variant-numeric: tabular-nums; }
.stat span { font-size: 11.5px; color: var(--text-3); }

/* ============ 卡片入场动画 ============ */

/* 仅在 JS 可用时隐藏初始态，保证无脚本时内容直接可见 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.js [data-reveal].in {
  opacity: 1;
  transform: none;
}

/* FAQ 卡片依次入场 */
.faq details:nth-of-type(2) { transition-delay: 70ms; }
.faq details:nth-of-type(3) { transition-delay: 140ms; }
.faq details:nth-of-type(4) { transition-delay: 210ms; }
.faq details:nth-of-type(5) { transition-delay: 280ms; }

/* ============ FAQ ============ */

.faq { display: flex; flex-direction: column; gap: 10px; }

.faq h2 { margin: 0; font-size: 17px; font-weight: 650; }

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 13px 16px;
  font-size: 14px;
  font-weight: 550;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 1.6px solid var(--text-3);
  border-bottom: 1.6px solid var(--text-3);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
  flex: none;
}

.faq details[open] summary::after { transform: rotate(225deg); }

.faq details p {
  margin: 0;
  padding: 0 16px 14px;
  font-size: 13.5px;
  color: var(--text-2);
}

/* ============ 页脚 ============ */

footer {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: 10px clamp(16px, 4vw, 32px) 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  align-items: center;
  justify-content: space-between;
  color: var(--text-3);
  font-size: 12.5px;
}

footer a { color: var(--text-2); text-decoration: none; border-bottom: 1px solid transparent; }
footer a:hover { color: var(--text); border-bottom-color: var(--line-strong); }

/* ============ Toast ============ */

.toasts {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
  width: max-content;
  max-width: min(92vw, 560px);
}

.toast {
  background: var(--glass-strong);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 12px;
  padding: 9px 16px;
  font-size: 13px;
  color: var(--text);
  box-shadow: var(--shadow);
  animation: toast-in 0.22s ease;
}

.toast.is-err { border-color: rgba(255, 122, 122, 0.45); color: #ffb3b3; }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ 响应式 ============ */

@media (max-width: 720px) {
  .options { grid-template-columns: 1fr; gap: 12px; }
  /* 移动端降毛玻璃：动画画布之上的 backdrop-filter 是 iOS 滚动卡顿的主因，
     降模糊半径并用更高不透明度补偿可读性 */
  .topbar,
  .panel,
  .faq details,
  .toast { backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
  .panel { background: rgba(13, 14, 18, 0.8); }
  .faq details { background: rgba(13, 14, 18, 0.8); }
}

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