/* ═══════════════════════════════════════════════════
   Torrent Parser — Flat Design 风格
   核心原则: 色块 + 排版替代阴影和质感
   ═══════════════════════════════════════════════════ */

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

:root {
  /* 主色板 — 纯色块，无渐变 */
  --c-bg:        #f5f5f5;
  --c-surface:   #ffffff;
  --c-text:      #1a1a2e;
  --c-text-sub:  #6b7280;
  --c-border:    #e5e7eb;

  /* 功能色 — 扁平色块 */
  --c-primary:   #2563eb;
  --c-accent:    #0891b2;
  --c-success:   #059669;
  --c-warning:   #d97706;
  --c-error:     #dc2626;
  --c-purple:    #7c3aed;
  --c-dark:      #1e293b;
  --c-muted:     #94a3b8;

  /* 尺寸 */
  --radius: 0px;        /* Flat: 直角，无圆角 */
  --max-w: 1100px;
  --gap: 16px;
}

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

/* ── 暗色模式 ──────────────────────────────────────── */
body[data-theme="dark"] {
  --c-bg:        #0f1117;
  --c-surface:   #1a1d27;
  --c-text:      #e2e8f0;
  --c-text-sub:  #94a3b8;
  --c-border:    #2d3348;
  --c-dark:      #0d0f14;
  --c-muted:     #64748b;
}

body[data-theme="dark"] .upload-zone:hover,
body[data-theme="dark"] .upload-zone.drag-over {
  background: #1e2a3a;
}

body[data-theme="dark"] .info-row { border-bottom-color: #1e2233; }
body[data-theme="dark"] .tracker-item { border-bottom-color: #1a1d27; }
body[data-theme="dark"] .file-table thead { background: #151821; }
body[data-theme="dark"] .file-table td { border-bottom-color: #1e2233; }
body[data-theme="dark"] .file-table tbody tr:hover { background: #1e2233; }
body[data-theme="dark"] .pager { background: #151821; }
body[data-theme="dark"] .pager-btn { border-color: var(--c-border); background: var(--c-surface); color: var(--c-text); }
body[data-theme="dark"] .pager-btn:hover:not(:disabled) { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
body[data-theme="dark"] .copy-btn { border-color: var(--c-border); background: var(--c-surface); color: var(--c-text-sub); }
body[data-theme="dark"] .error-box { background: #2a1518; }
body[data-theme="dark"] .error-text { color: #fca5a5; }
body[data-theme="dark"] .ft-bar-track { background: #2d3348; }
body[data-theme="dark"] .magnet-input,
body[data-theme="dark"] .file-search-input { background: #151821; border-color: var(--c-border); color: var(--c-text); }
body[data-theme="dark"] .btn-reset,
body[data-theme="dark"] .btn-export,
body[data-theme="dark"] .batch-tab,
body[data-theme="dark"] .sort-btn,
body[data-theme="dark"] .btn-toggle { background: var(--c-surface); border-color: var(--c-border); color: var(--c-text); }
body[data-theme="dark"] .batch-tab.active,
body[data-theme="dark"] .sort-btn.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

body {
  font-family: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── 顶部导航 ──────────────────────────────────────── */
.topbar {
  background: var(--c-dark);
  border-bottom: 3px solid var(--c-primary);
}

.topbar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}

.logo-icon {
  font-size: 22px;
  color: var(--c-primary);
  line-height: 1;
}

.logo-text {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-nav {
  display: flex;
  gap: 8px;
}

.nav-badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.73rem;
  font-weight: 600;
  color: #94a3b8;
  border: 1px solid #334155;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ── 主内容 ────────────────────────────────────────── */
.main {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 48px;
}

/* ── 英雄区 ────────────────────────────────────────── */
.hero {
  padding: 48px 0 32px;
  text-align: center;
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--c-text);
  letter-spacing: -0.5px;
}

.hero-subtitle {
  margin-top: 8px;
  font-size: 1rem;
  color: var(--c-text-sub);
  font-weight: 400;
}

/* ── 上传区 ────────────────────────────────────────── */
.upload-section {
  max-width: 560px;
  margin: 0 auto 32px;
}

.upload-zone {
  background: var(--c-surface);
  border: 2px dashed var(--c-border);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--c-primary);
  background: #eff6ff;
}

.upload-icon {
  color: var(--c-muted);
  margin-bottom: 12px;
  transition: color 0.15s;
}

.upload-zone:hover .upload-icon,
.upload-zone.drag-over .upload-icon {
  color: var(--c-primary);
}

.upload-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-text);
}

.upload-hint {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--c-text-sub);
}

.magnet-input-row {
  display: flex;
  margin-top: 16px;
  gap: 0;
}

.magnet-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--c-border);
  border-right: none;
  background: var(--c-surface);
  color: var(--c-text);
  font-size: 0.82rem;
  font-family: "Cascadia Code", "Consolas", monospace;
  outline: none;
}

.magnet-input::placeholder {
  color: var(--c-muted);
}

.magnet-input:focus {
  border-color: var(--c-primary);
}

.magnet-btn {
  padding: 8px 16px;
  border: 1px solid var(--c-primary);
  background: var(--c-primary);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s;
  flex-shrink: 0;
}

.magnet-btn:hover {
  background: #1d4ed8;
}

/* ── 加载条 ────────────────────────────────────────── */
.loading-section {
  max-width: 400px;
  margin: 0 auto 24px;
  text-align: center;
}

.loading-bar {
  height: 4px;
  background: var(--c-border);
  overflow: hidden;
}

.loading-bar-inner {
  width: 40%;
  height: 100%;
  background: var(--c-primary);
  animation: loadSlide 1s ease-in-out infinite;
}

@keyframes loadSlide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

.loading-text {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--c-text-sub);
}

/* ── 错误提示 ────────────────────────────────────────── */
.error-section {
  max-width: 560px;
  margin: 0 auto 24px;
}

.error-box {
  background: #fef2f2;
  border-left: 4px solid var(--c-error);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.error-icon {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-error);
  flex-shrink: 0;
}

.error-text {
  font-size: 0.9rem;
  color: #991b1b;
}

/* ── 统计卡片行 ──────────────────────────────────────── */
.card-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  margin-bottom: 24px;
}

.stat-card {
  padding: 20px;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-primary { background: var(--c-primary); }
.stat-accent  { background: var(--c-accent); }
.stat-dark    { background: var(--c-dark); }
.stat-muted   { background: var(--c-muted); }

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  opacity: 0.85;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.3px;
}

/* ── 面板网格 ──────────────────────────────────────── */
.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}

.panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  overflow: hidden;
}

.panel-wide {
  grid-column: 1 / -1;
}

.panel-col {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.68rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag-blue   { background: var(--c-primary); }
.tag-green  { background: var(--c-success); }
.tag-orange { background: var(--c-warning); }
.tag-purple { background: var(--c-purple); }
.tag-cyan   { background: #0891b2; }

.panel-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-text);
}

.panel-body {
  padding: 16px 20px;
}

.panel-body-flush {
  padding: 0;
}

/* ── 结果操作栏 / 批量标签 ─────────────────────────── */
.reset-bar {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-bottom: 16px;
}

.btn-reset,
.btn-export,
.batch-tab,
.sort-btn,
.btn-toggle {
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  padding: 7px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.btn-reset:hover,
.btn-export:hover,
.batch-tab:hover,
.sort-btn:hover,
.btn-toggle:hover,
.batch-tab.active,
.sort-btn.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.batch-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.batch-tab {
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-border);
}

.file-search-input {
  flex: 1;
  min-width: 180px;
  padding: 7px 10px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: 0.82rem;
  outline: none;
}

.file-search-input:focus {
  border-color: var(--c-primary);
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.sort-label {
  color: var(--c-text-sub);
  font-size: 0.8rem;
  font-weight: 600;
}

.sort-btn {
  padding: 5px 9px;
  font-size: 0.76rem;
}

.empty-cell {
  text-align: center !important;
  color: var(--c-text-sub) !important;
  padding: 24px 16px !important;
}

/* ── 信息行 ────────────────────────────────────────── */
.info-row {
  display: flex;
  padding: 8px 0;
  border-bottom: 1px solid #f3f4f6;
  gap: 12px;
}

.info-row:last-child {
  border-bottom: none;
}

.info-key {
  flex-shrink: 0;
  width: 90px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-text-sub);
}

.info-val {
  font-size: 0.88rem;
  color: var(--c-text);
  word-break: break-all;
}

.info-val.mono {
  font-family: "Cascadia Code", "Consolas", "Menlo", monospace;
  font-size: 0.82rem;
  color: var(--c-primary);
}

.magnet-val {
  word-break: break-all;
  white-space: normal;
  line-height: 1.5;
}

.copy-btn {
  flex-shrink: 0;
  padding: 2px 8px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text-sub);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  align-self: center;
}

.copy-btn:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.copy-btn.copied {
  background: var(--c-success);
  color: #fff;
  border-color: var(--c-success);
}

/* ── Tracker ────────────────────────────────────────── */
.tracker-primary {
  padding: 10px 0;
  border-bottom: 1px solid #f3f4f6;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tracker-label {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--c-warning);
  padding: 2px 8px;
  text-transform: uppercase;
}

.tracker-url {
  font-size: 0.85rem;
  font-family: "Cascadia Code", "Consolas", monospace;
  color: var(--c-text);
  word-break: break-all;
}

.tracker-list {
  margin-top: 8px;
}

.tracker-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid #f9fafb;
  font-size: 0.82rem;
  font-family: "Cascadia Code", "Consolas", monospace;
  color: var(--c-text-sub);
}

.tracker-item::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  flex-shrink: 0;
}

/* ── 分片哈希 ──────────────────────────────────────── */
.panel-subtitle {
  margin-left: auto;
  color: var(--c-text-sub);
  font-size: 0.78rem;
  font-weight: 600;
}

.pieces-list {
  max-height: 360px;
  overflow: auto;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.78rem;
}

.piece-item,
.piece-more {
  padding: 5px 0;
  border-bottom: 1px solid #f3f4f6;
  color: var(--c-text-sub);
  word-break: break-all;
}

.piece-more {
  color: var(--c-primary);
  font-weight: 600;
}

body[data-theme="dark"] .piece-item,
body[data-theme="dark"] .piece-more { border-bottom-color: #1e2233; }

/* ── 文件表格 ──────────────────────────────────────── */
.file-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  table-layout: fixed;
}

.file-table thead {
  background: #f8fafc;
}

.file-table th {
  padding: 10px 16px;
  text-align: left;
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--c-text-sub);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--c-border);
}

.file-table td {
  padding: 10px 16px;
  border-bottom: 1px solid #f3f4f6;
  vertical-align: middle;
}

.file-table tbody tr:hover {
  background: #f8fafc;
}

.col-idx {
  width: 50px;
  text-align: center !important;
}

.col-idx + td,
.file-table td:first-child {
  text-align: center;
  color: var(--c-muted);
  font-weight: 600;
}

.col-path {
  width: auto;
}

.file-table td:nth-child(2) {
  max-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.col-size { width: 160px; text-align: right !important; }
.col-bar  { width: 140px; }

.file-table td:nth-child(3) {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* 大小占比条 */
.size-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.size-bar-track {
  flex: 1;
  height: 6px;
  background: #e5e7eb;
}

.size-bar-fill {
  height: 100%;
  background: var(--c-primary);
  transition: width 0.3s ease;
}

.size-bar-pct {
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--c-muted);
  min-width: 36px;
  text-align: right;
}

/* ── 分页器 ──────────────────────────────────────── */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 12px 20px;
  border-top: 1px solid var(--c-border);
  background: #f8fafc;
}

.pager-btn {
  padding: 6px 14px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.pager-btn:hover:not(:disabled) {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.pager-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.pager-info {
  font-size: 0.8rem;
  color: var(--c-text-sub);
  font-weight: 500;
  min-width: 100px;
  text-align: center;
}

/* ── 底部 ──────────────────────────────────────────── */
.footer {
  background: var(--c-dark);
  color: #64748b;
  padding: 16px 24px;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.footer-sep {
  margin: 0 6px;
  opacity: 0.4;
}

/* ── 响应式 ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .topbar-nav { display: none; }

  .hero-title { font-size: 1.5rem; }

  .card-row {
    grid-template-columns: 1fr 1fr;
  }

  .panel-grid {
    grid-template-columns: 1fr;
  }

  .stat-value { font-size: 1.2rem; }

  .file-controls {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .card-row {
    grid-template-columns: 1fr;
  }

  .info-key { width: 72px; }
}

/* ── 主题切换按钮 ──────────────────────────────────── */
.theme-toggle {
  background: none;
  border: 1px solid #334155;
  color: #94a3b8;
  width: 32px;
  height: 32px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.theme-toggle:hover {
  color: #fff;
  border-color: var(--c-primary);
}

/* ── 文件类型分布图 ────────────────────────────────── */
.tag-teal { background: #0d9488; }

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

.ft-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ft-label {
  flex-shrink: 0;
  width: 48px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-text-sub);
  text-align: right;
}

.ft-bar-track {
  flex: 1;
  height: 16px;
  background: #e5e7eb;
  overflow: hidden;
}

.ft-bar-fill {
  height: 100%;
  background: var(--c-accent);
  transition: width 0.4s ease;
}

.ft-info {
  flex-shrink: 0;
  width: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-text-sub);
  font-variant-numeric: tabular-nums;
}