/* ============================================================================
   style.css — joucos-genlab 樣式（RWD 基本款）
   ============================================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f5f5f5;
  --surface: #fff;
  --border: #ddd;
  --primary: #1a1a1a;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warn: #d97706;
  --text: #111;
  --text-muted: #666;
  --radius: 6px;
  --shadow: 0 1px 4px rgba(0,0,0,.1);
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }

.hidden { display: none !important; }
.page { min-height: 100vh; }

/* ── 登入 ── */
.login-box { max-width: 400px; margin: 15vh auto; padding: 40px; background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; }
.login-box h1 { font-size: 28px; margin-bottom: 8px; }
.login-desc { color: var(--text-muted); margin-bottom: 24px; }
.btn-google { background: var(--accent); color: #fff; text-decoration: none; display: inline-block; padding: 10px 24px; border-radius: var(--radius); font-weight: 600; transition: background .15s; }
.btn-google:hover { background: var(--accent-hover); }

/* ── Topbar ── */
.topbar { display: flex; align-items: center; gap: 16px; padding: 0 20px; height: 52px; background: var(--primary); color: #fff; position: sticky; top: 0; z-index: 100; }
.logo { font-weight: 700; font-size: 18px; color: #fff; margin-right: 8px; }
.topbar nav { display: flex; gap: 4px; flex: 1; }
.nav-btn { background: none; border: none; color: rgba(255,255,255,.7); padding: 6px 12px; border-radius: var(--radius); cursor: pointer; font-size: 14px; transition: .15s; }
.nav-btn:hover, .nav-btn.active { background: rgba(255,255,255,.15); color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.user-email { font-size: 12px; color: rgba(255,255,255,.7); }

/* ── Container ── */
.container { max-width: 960px; margin: 0 auto; padding: 24px 16px; }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; background: var(--accent); color: #fff; border: none; border-radius: var(--radius); cursor: pointer; font-size: 14px; font-weight: 500; transition: background .15s; }
.btn:hover { background: var(--accent-hover); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); }
.btn-sm { padding: 4px 10px; font-size: 13px; background: #e5e7eb; color: var(--text); border: none; border-radius: var(--radius); cursor: pointer; }
.btn-sm:hover { background: #d1d5db; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-success { background: var(--success); }
.btn-group { display: flex; flex-wrap: wrap; gap: 6px; }
.btn-group .btn-tag { padding: 4px 12px; background: #f0f0f0; color: var(--text); border: 1px solid var(--border); border-radius: 20px; cursor: pointer; font-size: 13px; transition: .15s; }
.btn-group .btn-tag.selected { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── Tools grid ── */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin-top: 16px; }
.tool-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; cursor: pointer; transition: box-shadow .15s; }
.tool-card:hover { box-shadow: 0 2px 12px rgba(0,0,0,.12); }
.tool-card h3 { font-size: 16px; margin-bottom: 8px; }
.tool-card p { color: var(--text-muted); font-size: 13px; }

/* ── Steps ── */
.step-section { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-top: 16px; }
.step-section h3 { margin-bottom: 16px; font-size: 15px; }

/* ── Drop zone ── */
.drop-zone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 32px; text-align: center; color: var(--text-muted); cursor: pointer; transition: .15s; }
.drop-zone.drag-over { border-color: var(--accent); background: #eff6ff; }
.drop-zone p { margin-bottom: 12px; }

/* ── Upload preview ── */
.upload-preview { display: flex; gap: 16px; align-items: flex-start; margin-top: 12px; }
.upload-preview img { width: 120px; height: 120px; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--border); }
#upload-info { font-size: 13px; color: var(--text-muted); }

/* ── Prompt builder ── */
.prompt-builder { display: flex; flex-direction: column; gap: 12px; }
.prompt-row { display: flex; flex-direction: column; gap: 6px; }
.prompt-row label { font-weight: 600; font-size: 13px; }
.prompt-row textarea { width: 100%; padding: 8px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 13px; resize: vertical; }

/* ── Dict search ── */
.dict-search-wrap { position: relative; }
#dict-search { width: 100%; max-width: 360px; padding: 7px 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 13px; }
.dict-dropdown { position: absolute; top: 100%; left: 0; width: 360px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); z-index: 50; max-height: 220px; overflow-y: auto; }
.dict-item { padding: 8px 12px; cursor: pointer; border-bottom: 1px solid #f0f0f0; display: flex; justify-content: space-between; font-size: 13px; }
.dict-item:hover { background: #f9f9f9; }
.dict-item .zh { color: var(--text-muted); font-size: 12px; }
.dict-add-btn { padding: 8px 12px; color: var(--accent); cursor: pointer; font-size: 13px; }
.dict-add-btn:hover { background: #f0f6ff; }

/* ── Selected terms ── */
.selected-terms { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.term-tag { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; background: #eff6ff; border: 1px solid #bfdbfe; border-radius: 14px; font-size: 12px; }
.term-tag .remove { cursor: pointer; color: var(--text-muted); font-weight: bold; }

/* ── Results grid ── */
.results-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 16px; }
.result-card { border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; position: relative; }
.result-card img { width: 100%; display: block; }
.result-card.adopted { border-color: var(--success); }
.result-actions { display: flex; gap: 6px; padding: 8px; background: var(--surface); }
.results-actions { display: flex; align-items: center; gap: 16px; margin-top: 12px; }
.adopted-badge { position: absolute; top: 6px; left: 6px; background: var(--success); color: #fff; font-size: 11px; padding: 2px 6px; border-radius: 4px; }

/* ── Quota / Cost ── */
.quota-info, .cost-info { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.cost-info { color: var(--accent); }

/* ── Status / Error ── */
.status-msg { font-size: 13px; padding: 8px 0; }
.error-msg { color: var(--danger); background: #fef2f2; border: 1px solid #fecaca; border-radius: var(--radius); padding: 8px 12px; margin-bottom: 12px; }
.success-msg { color: var(--success); }
.warn-msg { color: var(--warn); }

/* ── History ── */
.history-filter { display: flex; gap: 8px; align-items: center; margin-bottom: 16px; }
.history-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; }
.history-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.history-prompt { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; white-space: pre-wrap; word-break: break-all; }
.history-imgs { display: flex; gap: 8px; flex-wrap: wrap; }
.history-imgs img { width: 80px; height: 80px; object-fit: cover; border-radius: 4px; border: 1px solid var(--border); }
.history-imgs img.adopted { border: 2px solid var(--success); }
.history-img-wrap { display: flex; flex-direction: column; gap: 4px; align-items: center; }
.history-img-actions { display: flex; gap: 4px; }
.btn-xs { font-size: 11px; padding: 2px 8px; border: 1px solid var(--border); border-radius: 4px; text-decoration: none; color: inherit; background: var(--surface); }
.btn-xs:hover { background: var(--border); }

/* ── Stats ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat-card .label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.stat-card .value { font-size: 22px; font-weight: 700; }
.stat-card .sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ── Admin ── */
.admin-tabs { display: flex; gap: 4px; margin-bottom: 16px; flex-wrap: wrap; }
.tab-btn { padding: 6px 14px; border: 1px solid var(--border); background: var(--surface); border-radius: var(--radius); cursor: pointer; font-size: 13px; }
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.admin-tab-content { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #f0f0f0; }
th { background: #f9f9f9; font-weight: 600; }
tr:hover { background: #fafafa; }

/* ── Loading ── */
.loading { display: inline-block; width: 16px; height: 16px; border: 2px solid #ddd; border-top-color: var(--accent); border-radius: 50%; animation: spin .6s linear infinite; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RWD ── */
@media (max-width: 600px) {
  .results-grid { grid-template-columns: 1fr; }
  .topbar nav .nav-btn { padding: 6px 8px; font-size: 13px; }
  .user-email { display: none; }
  .admin-tabs { gap: 2px; }
  .tab-btn { padding: 5px 10px; font-size: 12px; }
}