/* ═══════════════════════════════════════════════════════════════
   电商视觉设计工具 — 明亮/暗色主题
   ═══════════════════════════════════════════════════════════════ */

/* ── Reset & Variables ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f6f8fb;
  --bg-2: #ffffff;
  --bg-3: #eef2f7;
  --card-bg: #ffffff;
  --card-border: #dbe3ee;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.18);
  --secondary: #0284c7;
  --accent: #f59e0b;
  --success: #059669;
  --error: #dc2626;
  --text: #172033;
  --text-muted: #5d6b82;
  --text-dim: #93a0b3;
  --border: #dbe3ee;
  --border-light: #c8d3e1;
  --shadow: 0 8px 26px rgba(15, 23, 42, 0.08);
  --shadow-glow: 0 10px 28px rgba(79, 70, 229, 0.13);
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="dark"] {
  --bg: #0f0f13;
  --bg-2: #1a1a24;
  --bg-3: #24243a;
  --card-bg: #1e1e2e;
  --card-border: #2a2a44;
  --primary: #6c5ce7;
  --primary-hover: #7c6cf7;
  --primary-glow: rgba(108, 92, 231, 0.3);
  --secondary: #0ea5e9;
  --accent: #f59e0b;
  --success: #10b981;
  --error: #ef4444;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #4a4a6a;
  --border: #2a2a44;
  --border-light: #3a3a5a;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 20px rgba(108,92,231,0.15);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--secondary); text-decoration: none; transition: color var(--transition); }
a:hover { color: #38bdf8; }

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #5a5a7a; }

/* ── Header ──────────────────────────────────────────────────── */
.header {
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 0 20px var(--primary-glow);
}

.nav { display: flex; align-items: center; gap: 4px; }

.nav a {
  padding: 8px 18px;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}

.nav a:hover { background: var(--bg-3); color: var(--text); }
.nav a.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 0 20px var(--primary-glow);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg-3);
  color: var(--text);
  cursor: pointer;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.theme-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 14px var(--primary-glow);
}

/* ── Container ───────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 56px 0 32px;
}

.hero-title {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.hero-mark {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  background:
    radial-gradient(circle at 72% 24%, rgba(255,255,255,0.9) 0 8%, transparent 9%),
    linear-gradient(135deg, #2563eb, #06b6d4);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.22);
}

.hero h1 {
  font-size: 38px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary), #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  text-shadow: none;
}

.hero h1 .hero-mark {
  -webkit-text-fill-color: #fff;
}

.hero p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* ── Tool Cards Grid ─────────────────────────────────────────── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 24px 0;
}

.tool-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), #38bdf8);
  opacity: 0;
  transition: opacity var(--transition);
}

.tool-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.tool-card:hover::before { opacity: 1; }

.tool-card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
  box-shadow: inset 0 1px 2px rgba(255,255,255,0.05);
}

.tool-card-icon.blue { background: linear-gradient(135deg, #1e3a5f, #1a1a3e); color: #60a5fa; }
.tool-card-icon.green { background: linear-gradient(135deg, #1a3e2e, #1a1a3e); color: #34d399; }
.tool-card-icon.purple { background: linear-gradient(135deg, #2e1a3e, #1a1a3e); color: #a78bfa; }
.tool-card-icon.orange { background: linear-gradient(135deg, #3e2e1a, #1a1a3e); color: #fb923c; }

.tool-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.tool-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.tool-card .tag {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 14px;
  background: var(--bg-3);
  color: var(--primary);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid rgba(108,92,231,0.2);
}

/* ── Page Title ──────────────────────────────────────────────── */
.page-title { margin-bottom: 28px; }
.page-title h2 { font-size: 28px; font-weight: 700; margin-bottom: 6px; }
.page-title p { color: var(--text-muted); font-size: 14px; }
.page-title .back-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; margin-bottom: 14px; color: var(--text-muted);
  transition: color var(--transition);
}
.page-title .back-link:hover { color: var(--secondary); }

/* ── Tool Layout (two column) ────────────────────────────────── */
.tool-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 960px) { .tool-layout { grid-template-columns: 1fr; } }

/* ── Input Panel ─────────────────────────────────────────────── */
.input-panel {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  position: sticky;
  top: 88px;
  box-shadow: var(--shadow);
}

.input-panel h3 {
  font-size: 16px; font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px; font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group textarea {
  width: 100%;
  min-height: 90px;
  padding: 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.5;
}
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-2); color: var(--text); }

/* ── Form Row ────────────────────────────────────────────────── */
.form-row { display: flex; gap: 12px; margin-bottom: 18px; }
.form-row > .form-group { flex: 1; margin-bottom: 0; }

/* ── Custom Size Row ───────────────────────────────────────── */
.size-custom-row {
  display: flex; align-items: center; gap: 8px;
}
.size-custom-row input {
  flex: 1; min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px; text-align: center;
  background: var(--card-bg); color: var(--text);
  font-family: inherit; outline: none;
  transition: border-color .2s;
}
.size-custom-row input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}

/* ── Toggle Row ──────────────────────────────────────────────── */
.toggle-row {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px; user-select: none; cursor: pointer;
}
.toggle-row input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}
.toggle-row span { font-size: 13px; color: var(--text-muted); cursor: pointer; }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 12px 24px;
  border: none; border-radius: var(--radius-xs);
  font-size: 15px; font-weight: 600; font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 16px var(--primary-glow);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 6px 24px var(--primary-glow);
  transform: translateY(-2px);
}
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary.loading { pointer-events: none; }
.btn-primary .spinner { display: none; width: 18px; height: 18px; }
.btn-primary.loading .spinner {
  display: inline-block;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
.btn-primary.loading .btn-text { display: none; }

.btn-secondary {
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 10px 20px;
  border-radius: var(--radius-xs);
  font-size: 14px; font-weight: 500; font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 6px; width: auto;
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(108,92,231,0.1);
}
.btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Segmented Control ────────────────────────────────────────── */
.seg {
  display: flex; gap: 0;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 3px;
  margin: 0 0 10px;
}
.seg-item {
  flex: 1; text-align: center;
  padding: 8px 10px;
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  color: var(--text-muted);
  border-radius: 5px;
  user-select: none;
  transition: all var(--transition);
}
.seg-item:hover { color: var(--text); background: var(--bg-3); }
.seg-item.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 0 16px var(--primary-glow);
}
.seg-hint { font-size: 12px; color: var(--text-dim); margin: -6px 0 14px; line-height: 1.4; }

/* ── Preset Chips ─────────────────────────────────────────────── */
.preset-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 14px; }
.preset-chip {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 16px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 12px;
  user-select: none;
  transition: all var(--transition);
}
.preset-chip:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(108,92,231,0.1);
  box-shadow: 0 0 12px var(--primary-glow);
}

/* ── Status Bar ───────────────────────────────────────────────── */
.status-bar {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: var(--radius-xs);
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  min-height: 40px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
}
.status-bar.error { color: var(--error); border-color: rgba(239,68,68,0.3); background: rgba(239,68,68,0.08); }
.status-bar.success { color: var(--success); border-color: rgba(16,185,129,0.3); background: rgba(16,185,129,0.08); }

@keyframes spin { to { transform: rotate(360deg); } }

.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: -2px;
  margin-right: 6px;
}

/* ── Result Panel ─────────────────────────────────────────────── */
.result-panel {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}
.result-panel .placeholder { text-align: center; color: var(--text-muted); }
.result-panel .placeholder .icon { font-size: 56px; margin-bottom: 16px; opacity: 0.2; }
.result-panel .placeholder p { font-size: 14px; }

/* ── Results Grid ─────────────────────────────────────────────── */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 16px;
  width: 100%;
}
.result-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.result-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.result-card img {
  width: 100%; aspect-ratio: 1;
  object-fit: contain; display: block;
  background: var(--bg-3);
}
.result-card .result-actions {
  padding: 8px 10px;
  display: flex; gap: 6px;
  justify-content: center; margin: 0;
}
.result-card .result-actions a,
.result-card .result-actions button {
  font-size: 12px; padding: 5px 12px; height: auto; line-height: 1.4;
}

/* ── Image Upload ─────────────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-xs);
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.upload-area:hover, .upload-area.dragover {
  border-color: var(--primary);
  background: rgba(108,92,231,0.06);
  box-shadow: 0 0 20px var(--primary-glow);
}
.upload-area.has-image { border-style: solid; border-color: var(--success); padding: 8px; }
.upload-area .upload-icon { font-size: 36px; margin-bottom: 8px; opacity: 0.3; }
.upload-area p { font-size: 13px; color: var(--text-muted); }
.upload-area input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-area .thumbnails { display: none; gap: 8px; flex-wrap: wrap; }
.upload-area.has-image .thumbnails { display: flex; }
.upload-area.has-image .upload-placeholder { display: none; }
.thumb-item { position: relative; width: 80px; height: 80px; border-radius: var(--radius-xs); overflow: hidden; border: 2px solid var(--border); flex-shrink: 0; }
.thumb-item:hover { border-color: var(--primary); }
.thumb-item img { width: 100%; height: 100%; object-fit: cover; }
.thumb-item .thumb-idx { position: absolute; bottom: 2px; left: 2px; background: rgba(0,0,0,.6); color: #fff; font-size: 10px; font-weight: 600; width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.thumb-del {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border: none;
  border-radius: 50%;
  background: rgba(220, 38, 38, 0.85);
  color: #fff;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  padding: 0;
}
.thumb-item:hover .thumb-del {
  opacity: 1;
}
.thumb-del:hover {
  background: #dc2626;
  transform: scale(1.15);
}

/* ── Alert / Flash ────────────────────────────────────────────── */
.alert {
  padding: 12px 18px;
  border-radius: var(--radius-xs);
  font-size: 14px;
  margin-bottom: 16px;
}
.alert-error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  color: var(--error);
}
.alert-success {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  color: var(--success);
}

/* ── Plan List ────────────────────────────────────────────────── */
.plan-list { display: flex; flex-direction: column; gap: 8px; margin: 8px 0; }
.plan-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}
.plan-item:hover { border-color: var(--primary); }
.plan-num {
  flex: 0 0 24px; width: 24px; height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 12px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.plan-body { flex: 1; min-width: 0; }
.plan-title { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.plan-desc { font-size: 12px; color: var(--text-muted); line-height: 1.5; word-break: break-word; }
.plan-actions { flex: 0 0 auto; display: flex; flex-direction: column; gap: 4px; }
.plan-actions button { height: 26px; line-height: 24px; padding: 0 10px; font-size: 11px; width: auto; }

/* ── Settings Page ────────────────────────────────────────────── */
.settings-layout {
  display: grid;
  grid-template-columns: minmax(520px, 1fr) minmax(400px, 430px);
  gap: 24px;
  align-items: start;
}
.settings-stack,
.settings-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.settings-aside {
  position: sticky;
  top: 88px;
}
.settings-panel {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
}
.settings-panel h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--border);
}
.settings-panel .form-group {
  margin-bottom: 14px;
}
.settings-help {
  padding: 20px 22px;
}
.settings-help h3 {
  margin-bottom: 12px;
}
.settings-help ul {
  margin: 0;
}
.settings-help li {
  margin-bottom: 5px;
}
.settings-help table {
  table-layout: auto;
}
.settings-help th,
.settings-help td {
  padding: 7px 8px !important;
  vertical-align: middle;
}
.settings-help th:first-child,
.settings-help td:first-child {
  width: 112px;
}
.settings-help th:nth-child(2),
.settings-help td:nth-child(2) {
  min-width: 150px;
}
.settings-help th:last-child,
.settings-help td:last-child {
  width: 74px;
}
.settings-test-result {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
}
.settings-users-title {
  margin-top: 32px;
}
.settings-users-layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
.settings-users-table {
  justify-content: flex-start;
  min-height: 0;
}
@media (max-width: 980px) {
  .settings-layout,
  .settings-users-layout {
    grid-template-columns: 1fr;
  }
  .settings-aside {
    position: static;
  }
}

/* ── Tables ────────────────────────────────────────────────────── */
table { width: 100%; font-size: 13px; border-collapse: collapse; }
th { text-align: left; padding: 8px; font-weight: 600; color: var(--text-muted); border-bottom: 1px solid var(--border); }
td { padding: 8px; border-bottom: 1px solid var(--border); color: var(--text-muted); }
td code { background: var(--bg-2); padding: 1px 6px; border-radius: 3px; font-size: 12px; color: var(--text); }

/* ── Footer ────────────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--text-dim);
  font-size: 13px;
  border-top: 1px solid var(--border);
  margin-top: 48px;
}

/* ── Utility ───────────────────────────────────────────────────── */
code {
  background: var(--bg-2);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 13px;
  color: var(--secondary);
}