:root {
  --bg: #0e1117;
  --panel: #161b22;
  --panel2: #1f2731;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #5eb3ff;
  --accent2: #7ee0c8;
  --warn: #f6b26b;
  --bad: #f06c6c;
  --good: #7ee0c8;
  --header-grad-top: #131922;
  --header-grad-bot: #0e1117;
  --result-bg: #1a2533;
  --result-border: #2c4159;
  --result-inner: #243349;
  --accent-contrast: #0e1117;
  --shadow: rgba(0,0,0,0.3);
}
[data-theme="light"] {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --panel2: #eef1f6;
  --border: #d8dde6;
  --text: #1f2630;
  --muted: #6b7280;
  --accent: #1f6feb;
  --accent2: #0a9c7d;
  --warn: #b06400;
  --bad: #c33b3b;
  --good: #0a9c7d;
  --header-grad-top: #ffffff;
  --header-grad-bot: #eef1f6;
  --result-bg: #eaf2ff;
  --result-border: #c1d6f5;
  --result-inner: #ffffff;
  --accent-contrast: #ffffff;
  --shadow: rgba(15,30,55,0.08);
}
html { scrollbar-gutter: stable; }
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px; line-height: 1.5;
}
header {
  padding: 18px 24px; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(180deg, var(--header-grad-top) 0%, var(--header-grad-bot) 100%);
  gap: 16px; flex-wrap: wrap;
  position: relative;
}
header h1 { margin: 0 0 4px; font-size: 20px; }
header .sub { color: var(--muted); font-size: 12px; }
header .meta { text-align: right; color: var(--muted); font-size: 12px; }
header nav {
  display: flex; gap: 8px; align-items: center;
  position: absolute; left: 50%; transform: translateX(-50%);
}
header nav a {
  color: var(--muted); font-size: 12px; text-decoration: none;
  padding: 5px 10px; border: 1px solid var(--border); border-radius: 4px;
  background: var(--panel2);
}
header nav a:hover { border-color: var(--accent); color: var(--accent); }
header nav a.active { border-color: var(--accent); color: var(--accent); }

.btn-mini {
  margin-top: 4px; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); padding: 4px 10px; border-radius: 4px;
  cursor: pointer; font-size: 12px;
}
.btn-mini:hover { border-color: var(--accent); }

.btn {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); padding: 7px 14px; border-radius: 4px;
  cursor: pointer; font-size: 13px;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--bad); }
.btn.danger:hover { border-color: var(--bad); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

main {
  display: grid; gap: 16px; padding: 16px;
  grid-template-columns: 1fr 1.2fr 1.3fr;
}
@media (max-width: 1100px) {
  main { grid-template-columns: 1fr; }
}

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px;
}
.card.accent-card {
  background: var(--result-bg);
  border-color: var(--result-border);
  box-shadow: 0 4px 18px var(--shadow);
}
.card.accent-card .main-result,
.card.accent-card .meta-grid > div {
  background: var(--result-inner);
}
.card.accent-card h2 { color: var(--accent2); }
.card h2 { margin: 0 0 12px; font-size: 15px; color: var(--accent); }
.card h3 { margin: 16px 0 8px; font-size: 13px; color: var(--accent2); }
.card h3 small { color: var(--muted); font-weight: normal; }

.row { margin-bottom: 12px; }
.row label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.row .hint { color: var(--muted); font-size: 11px; margin-top: 4px; }
select, input[type=number], input[type=text] {
  width: 100%; background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 4px; padding: 7px 9px;
  font-size: 13px;
}
select:focus, input:focus { outline: none; border-color: var(--accent); }

.seg { display: flex; background: var(--panel2); border-radius: 4px; padding: 2px; }
.seg input { display: none; }
.seg label {
  flex: 1; text-align: center; padding: 6px 8px; cursor: pointer;
  font-size: 12px; color: var(--muted); border-radius: 3px;
}
.seg input:checked + label { background: var(--accent); color: var(--accent-contrast); font-weight: 600; }

.grid {
  display: grid; gap: 12px;
  grid-template-columns: repeat(2, 1fr);
}
.param.full-row { grid-column: 1 / -1; }
.param .lbl {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 12px; color: var(--muted); margin-bottom: 4px;
}
.param .val { color: var(--accent); font-weight: 600; font-size: 13px; }
.param .sub-lbl { font-size: 11px; color: var(--muted); margin-top: 2px; }
input[type=range] {
  -webkit-appearance: none; appearance: none; width: 100%; background: transparent;
}
input[type=range]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right,
    var(--accent) 0 var(--range-pct, 50%),
    var(--border) var(--range-pct, 50%) 100%);
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; height: 14px; width: 14px; border-radius: 50%;
  background: var(--accent); margin-top: -5px; cursor: pointer;
}
input[type=range]::-moz-range-track { height: 4px; border-radius: 2px; background: var(--border); }
input[type=range]::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--accent); }
input[type=range]::-moz-range-thumb { height: 14px; width: 14px; border: none; border-radius: 50%; background: var(--accent); cursor: pointer; }

.batch-sub {
  margin-top: 16px; padding: 12px; background: var(--panel2);
  border-radius: 6px; border: 1px dashed var(--border);
}
.batch-sub h3 { margin: 0 0 8px; color: var(--warn); font-size: 12px; }
.hidden { display: none; }

.tier-grid { display: grid; gap: 8px; }
.tier-row {
  display: grid; grid-template-columns: 100px 1fr 50px;
  align-items: center; gap: 8px; font-size: 12px;
}
.tier-row .name { color: var(--muted); }
.tier-row .pct { text-align: right; color: var(--accent); font-weight: 600; }

.main-result {
  background: var(--panel2); padding: 16px; border-radius: 6px;
  text-align: center; margin-bottom: 12px;
  flex: 1; min-width: 0;
}
.main-result-wrap {
  display: flex; gap: 12px; margin-bottom: 12px;
}
.main-result-wrap .main-result { margin-bottom: 0; }
.main-result-wrap.single .main-result + .main-result { display: none; }
@media (max-width: 700px) { .main-result-wrap { flex-direction: column; } }
.rlabel { color: var(--muted); font-size: 12px; }
.rvalue {
  font-size: 28px; font-weight: 700; color: var(--accent2);
  margin: 6px 0; font-variant-numeric: tabular-nums;
}
.rsub { color: var(--muted); font-size: 12px; }

.meta-grid {
  display: grid; gap: 8px; margin-bottom: 12px;
  grid-template-columns: 1fr 1fr;
}
.meta-grid > div {
  background: var(--panel2); padding: 8px 10px; border-radius: 4px;
  display: flex; flex-direction: column;
}
.meta-grid .k { color: var(--muted); font-size: 11px; }
.meta-grid .v { color: var(--text); font-weight: 600; font-size: 14px; font-variant-numeric: tabular-nums; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td {
  padding: 6px 8px; text-align: right; border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
th { color: var(--muted); font-weight: 500; text-align: right; }
th:first-child, td:first-child { text-align: left; }
th:nth-child(2), td:nth-child(2) { text-align: left; }
tr.seg-rt td:first-child { color: var(--accent); }
tr.seg-batch td:first-child { color: var(--warn); }

.lib { grid-column: 1 / -1; }
.lib summary { cursor: pointer; list-style: none; }
.lib summary::-webkit-details-marker { display: none; }
.lib summary::before { content: "▶ "; color: var(--muted); }
.lib[open] summary::before { content: "▼ "; }
#priceTable table { margin-top: 8px; }
#priceTable td.warn { color: var(--warn); }
#refreshLog {
  background: var(--panel2); padding: 8px; border-radius: 4px;
  font-size: 11px; max-height: 200px; overflow: auto;
  color: var(--muted); white-space: pre-wrap;
}

footer {
  padding: 16px 24px; text-align: center;
  color: var(--muted); font-size: 11px; border-top: 1px solid var(--border);
  line-height: 1.8;
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--text); text-decoration: underline; }

/* === per-model defaults override badge === */
.override-badge {
  display: inline-block; margin-left: 6px;
  font-size: 11px; padding: 1px 6px; border-radius: 10px;
  background: rgba(126, 224, 200, 0.15); color: var(--good);
  border: 1px solid rgba(126, 224, 200, 0.35);
}
.override-badge.none {
  background: rgba(139, 148, 158, 0.1); color: var(--muted);
  border-color: rgba(139, 148, 158, 0.3);
}

/* === defaults manager page === */
.dm-layout {
  display: grid; gap: 16px; padding: 16px;
  grid-template-columns: 280px 1fr;
}
@media (max-width: 900px) { .dm-layout { grid-template-columns: 1fr; } }

.model-list {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px;
  max-height: calc(100vh - 140px); overflow-y: auto;
}
.model-list .vendor-grp { margin-bottom: 8px; }
.model-list .vendor-name {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted); padding: 6px 10px;
}
.model-list .model-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; border-radius: 4px; cursor: pointer;
  font-size: 13px;
}
.model-list .model-item:hover { background: var(--panel2); }
.model-list .model-item.active { background: var(--panel2); border-left: 2px solid var(--accent); }
.model-list .model-item .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(139, 148, 158, 0.3);
}
.model-list .model-item.has-override .dot { background: var(--good); }

.editor-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 20px;
}
.editor-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border);
  gap: 12px; flex-wrap: wrap;
}
.editor-header h2 { margin: 0; font-size: 16px; color: var(--accent); }
.editor-header .sub { color: var(--muted); font-size: 12px; margin-top: 4px; }
.editor-actions { display: flex; gap: 8px; }

.dirty-pill {
  display: inline-block; font-size: 11px;
  padding: 2px 8px; border-radius: 10px; margin-left: 8px;
  background: rgba(246, 178, 107, 0.15); color: var(--warn);
  border: 1px solid rgba(246, 178, 107, 0.4);
}

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel); color: var(--text);
  padding: 10px 18px; border-radius: 6px; border: 1px solid var(--border);
  font-size: 13px; z-index: 1000;
  box-shadow: 0 4px 16px var(--shadow);
  opacity: 0; transition: opacity 0.2s;
}
.toast.show { opacity: 1; }
.toast.ok { border-color: var(--good); }
.toast.err { border-color: var(--bad); color: var(--bad); }

.empty {
  text-align: center; color: var(--muted); padding: 40px 20px; font-size: 13px;
}

/* === scenario tabs in defaults manager === */
.scenario-tabs {
  display: flex; flex-wrap: wrap; gap: 4px;
  padding: 4px; background: var(--panel2); border-radius: 6px;
}
.scenario-tabs .tab {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 4px; cursor: pointer;
  font-size: 12px; color: var(--muted);
  background: transparent; border: 1px solid transparent;
  white-space: nowrap;
}
.scenario-tabs .tab:hover { color: var(--text); background: var(--panel); }
.scenario-tabs .tab.active {
  color: var(--accent-contrast); background: var(--accent); font-weight: 600;
}
.scenario-tabs .tab .tab-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(139, 148, 158, 0.4);
}
.scenario-tabs .tab.has-override .tab-dot { background: var(--good); }
.scenario-tabs .tab.active .tab-dot { background: rgba(14,17,23,0.6); }
.scenario-tabs .tab.active.has-override .tab-dot { background: var(--accent-contrast); }

/* === attention highlight (calls user to interact) === */
@keyframes attention-pulse {
  0%, 100% { box-shadow: 0 0 0 1px var(--accent), 0 0 0 0 rgba(94,179,255,0.5); }
  50%      { box-shadow: 0 0 0 1px var(--accent), 0 0 0 6px rgba(94,179,255,0); }
}
.attention {
  border-color: var(--accent) !important;
  animation: attention-pulse 1.8s ease-in-out infinite;
}
.attention:focus { animation: none; }

/* === Cart Page === */
.cart-layout {
  display: grid; gap: 16px; padding: 16px;
  grid-template-columns: 1fr;
  max-width: 900px; margin: 0 auto;
}
.cart-list { display: flex; flex-direction: column; gap: 0.75rem; }
.cart-item { display: flex; align-items: center; gap: 1rem; padding: 0.75rem 1rem; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); }
.cart-item .item-info { flex: 1; }
.cart-item .item-info .item-model { font-weight: 600; font-size: 0.95rem; }
.cart-item .item-info .item-meta { font-size: 0.8rem; color: var(--muted); }
.cart-item .item-revenue { font-weight: 700; color: var(--accent); min-width: 100px; text-align: right; }
.cart-item .item-actions { display: flex; gap: 0.4rem; }
.cart-item .item-actions button { font-size: 0.75rem; padding: 0.2rem 0.5rem; }

/* === Comparison Page === */
.comparison-main { display: grid; gap: 16px; padding: 16px; grid-template-columns: 1fr; }
.vendor-group { margin-bottom: 1rem; }
.vendor-group h3 { margin: 0.5rem 0; font-size: 0.9rem; color: var(--muted); }
.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 0.4rem; }
.cb-label { font-size: 0.85rem; cursor: pointer; padding: 0.3rem 0.5rem; border-radius: 4px; }
.cb-label:hover { background: var(--panel2); }
.comparison-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.comparison-table th, .comparison-table td { padding: 0.5rem 0.8rem; border: 1px solid var(--border); text-align: center; }
.comparison-table th { background: var(--panel); position: sticky; top: 0; }
.comparison-table td:first-child { text-align: left; font-weight: 500; position: sticky; left: 0; background: var(--bg); }
.comparison-table .tier-header td { background: var(--panel2); font-weight: 600; }
.comparison-table .best-price { color: var(--accent); font-weight: 700; }

/* per-model parameter panels */
.cmp-panels {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.cmp-panel {
  background: var(--panel2); border: 1px solid var(--border);
  border-radius: 8px; padding: 14px;
}
.cmp-panel > h3 {
  margin: 0 0 4px; font-size: 14px; color: var(--accent);
}
.cmp-panel > h3 small { color: var(--muted); font-weight: normal; margin-left: 6px; font-size: 11px; }
.cmp-panel .grid { grid-template-columns: 1fr; }
.cmp-tier-info { font-size: 11px; color: var(--muted); margin-bottom: 10px; }

/* daily-cost bar chart */
.cmp-chart { margin-bottom: 12px; }
.cmp-chart:empty { display: none; }
.cmp-chart h3 { margin: 0 0 8px; font-size: 13px; color: var(--accent2); }
.cmp-bar-row {
  display: grid; grid-template-columns: 120px 1fr auto;
  align-items: center; gap: 10px; margin-bottom: 8px; font-size: 12px;
}
.cmp-bar-name { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cmp-bar-track { background: var(--panel2); border-radius: 4px; height: 18px; overflow: hidden; }
.cmp-bar-fill {
  height: 100%; background: var(--accent); border-radius: 4px;
  min-width: 2px; transition: width 0.25s ease;
}
.cmp-bar-fill.best { background: var(--good); }
.cmp-bar-val { font-variant-numeric: tabular-nums; font-weight: 600; white-space: nowrap; }
@media (max-width: 560px) {
  .cmp-bar-row { grid-template-columns: 90px 1fr auto; }
}

/* collapsible vendor groups (comparison model picker + defaults sidebar) */
.vendor-toggle { cursor: pointer; user-select: none; }
.vendor-toggle .caret {
  display: inline-block; margin-right: 6px; font-size: 10px;
  color: var(--muted); transition: transform 0.15s;
}
.vendor-group.collapsed .caret,
.vendor-grp.collapsed .caret { transform: rotate(-90deg); }
.vendor-group.collapsed .checkbox-grid { display: none; }
.vendor-grp.collapsed .model-item { display: none; }

/* === Model type tabs === */
.type-tabs {
  display: flex; gap: 4px; padding: 4px;
  background: var(--panel2); border-radius: 6px;
  margin-bottom: 12px;
}
.type-tab {
  flex: 1; text-align: center; padding: 7px 12px;
  border-radius: 4px; cursor: pointer;
  font-size: 12px; color: var(--muted);
  border: 1px solid transparent;
  transition: background 0.15s, color 0.15s;
}
.type-tab:hover { color: var(--text); background: var(--panel); }
.type-tab.active {
  background: var(--accent); color: var(--accent-contrast);
  font-weight: 600;
}
.type-tab input[type=radio] { display: none; }

/* === Media params panel === */
.media-params {
  margin-top: 12px;
}
.media-params .param-group {
  margin-bottom: 12px;
}
.media-params .param-label {
  display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px;
}
.resolution-selector { display: flex; flex-direction: column; gap: 6px; }
.res-option { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 6px; cursor: pointer; transition: background 0.15s; }
.res-option:hover { background: var(--hover, rgba(255,255,255,0.05)); }
.res-option.active { background: var(--accent-dim, rgba(99,102,241,0.15)); }
.res-option input[type=radio] { margin: 0; }
.res-option .hint { color: var(--muted); font-size: 0.85em; margin-left: auto; }
#audioToggleGroup label { display: flex; align-items: center; gap: 8px; cursor: pointer; }
#audioPriceHint { color: var(--warn, #f59e0b); font-size: 0.85em; }

/* === Comparison/Cart res-grid (standalone) === */
.cmp-panel .res-grid, #cartResGrid {
  display: grid; gap: 8px; margin: 8px 0;
}
.cmp-panel .res-row, #cartResGrid .res-row {
  display: grid; grid-template-columns: 120px 1fr 50px;
  align-items: center; gap: 8px; font-size: 12px;
}
.res-label { color: var(--muted); }

/* === Type badge in cart === */
.type-badge {
  display: inline-block; font-size: 11px; padding: 1px 6px;
  border-radius: 4px; font-weight: 600; vertical-align: middle;
}
.type-badge.type-text { background: var(--accent); color: var(--accent-contrast); }
.type-badge.type-video { background: var(--warn); color: #1a1a1a; }
.type-badge.type-image { background: var(--accent2); color: #1a1a1a; }