:root {
  --bg: #0f1115;
  --card: #1a1d24;
  --card-2: #22262f;
  --border: #2c313c;
  --text: #e8eaf0;
  --muted: #8a93a6;
  --primary: #3b82f6;
  --up: #ef4444;
  --down: #22c55e;
  --open-alert: #f59e0b;
  --add-alert: #ef4444;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

.hidden {
  display: none !important;
}

.muted {
  color: var(--muted);
  font-size: 12px;
}

/* ---- login ---- */
.login-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 50;
}

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-card h1 {
  margin: 0;
  font-size: 20px;
  text-align: center;
}

.login-hint {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.login-card input {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--text);
  font-size: 15px;
}

.login-error {
  margin: 0;
  color: var(--danger);
  font-size: 13px;
  text-align: center;
}

/* ---- layout ---- */
.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 96px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.topbar h1 {
  margin: 0;
  font-size: 22px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ---- buttons ---- */
.btn {
  background: var(--card-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 14px;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--primary);
}

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

.btn-ghost {
  background: transparent;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.btn-danger {
  color: var(--danger);
}

/* ---- shared ---- */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 12px;
}

.th-op {
  width: 110px;
}

tr:last-child td {
  border-bottom: none;
}

.price {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.change-up {
  color: var(--up);
}

.change-down {
  color: var(--down);
}

.change-flat {
  color: var(--muted);
}

.preview {
  color: var(--muted);
  font-size: 12px;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-open {
  background: rgba(245, 158, 11, 0.18);
  color: #ffcf7d;
  border: 1px solid var(--open-alert);
}

.badge-add {
  background: rgba(239, 68, 68, 0.2);
  color: #ffb4b4;
  border: 1px solid var(--add-alert);
  animation: pulse-badge 1.2s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

.badge-wait {
  background: var(--card-2);
  color: var(--muted);
}

/* ---- filter bar ---- */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.filter-search {
  flex: 1;
  min-width: 200px;
  max-width: 320px;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--text);
  font-size: 14px;
}

.filter-search:focus {
  outline: none;
  border-color: var(--primary);
}

.filter-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.chip:hover {
  border-color: var(--primary);
}

.chip-active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- stock grid & cards ---- */
.stock-count {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 14px;
}

.stock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.stock-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.stock-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.stock-id {
  min-width: 0;
}

.stock-code {
  font-weight: 700;
  font-size: 17px;
}

.stock-name {
  color: var(--muted);
  font-size: 12px;
  margin-left: 8px;
}

.stock-price {
  font-size: 26px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.stock-pct {
  font-size: 14px;
}

.stock-plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.plan {
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.plan-label {
  color: var(--muted);
  font-size: 12px;
}

.plan-value {
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.plan-trend {
  color: var(--muted);
  font-size: 12px;
}

.plan-date {
  color: var(--muted);
  font-size: 11px;
}

.stock-foot {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stock-foot .spacer {
  flex: 1;
}

/* trigger cards */
.stock-card.trigger-open {
  border-color: var(--open-alert);
  box-shadow: 0 0 0 1px var(--open-alert), 0 0 16px rgba(245, 158, 11, 0.15);
}

.stock-card.trigger-add {
  border-color: var(--add-alert);
  box-shadow: 0 0 0 1px var(--add-alert), 0 0 16px rgba(239, 68, 68, 0.2);
  animation: pulse-card 1.6s ease-in-out infinite;
}

@keyframes pulse-card {
  0%, 100% { box-shadow: 0 0 0 1px var(--add-alert), 0 0 16px rgba(239, 68, 68, 0.2); }
  50% { box-shadow: 0 0 0 1px var(--add-alert), 0 0 26px rgba(239, 68, 68, 0.45); }
}

/* ---- history panel ---- */
.history {
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

.history .table-wrap table {
  min-width: 320px;
}

tr.row-latest td {
  background: rgba(59, 130, 246, 0.06);
}

.tag-latest {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 10px;
  vertical-align: 2px;
}

.delta {
  color: var(--muted);
}

.price-latest {
  color: var(--primary);
}

/* ---- fab ---- */
.fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* ---- modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 60;
}

.modal-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-card h3 {
  margin: 0;
}

.modal-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}

.modal-card input {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--text);
  font-size: 15px;
}

.modal-card select {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-2);
  color: var(--text);
  font-size: 15px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 4px;
}

/* ---- history modal ---- */
.hist-card {
  max-width: 780px;
}

.hist-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.hist-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.hist-table-wrap {
  overflow-x: auto;
  max-height: 55vh;
  overflow-y: auto;
}

.chart-area {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

#hist-chart {
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 8px;
}

#hist-chart svg {
  width: 100%;
  height: auto;
  display: block;
}

#hist-chart text {
  fill: var(--muted);
  font-size: 10px;
}

.grid-line {
  stroke: var(--border);
  stroke-width: 1;
}

.line-open {
  stroke: var(--primary);
  stroke-width: 2;
  fill: none;
}

.line-add {
  stroke: var(--add-alert);
  stroke-width: 2;
  fill: none;
}

.dot-open {
  fill: var(--primary);
}

.dot-add {
  fill: var(--add-alert);
}

.chart-legend {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--muted);
  align-items: center;
}

.chart-legend .swatch {
  display: inline-block;
  width: 16px;
  height: 3px;
  border-radius: 2px;
  margin-right: 5px;
  vertical-align: middle;
}

.swatch-open {
  background: var(--primary);
}

.swatch-add {
  background: var(--add-alert);
}

@media (max-width: 640px) {
  .hist-body {
    grid-template-columns: 1fr;
  }
  .hist-table-wrap {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .topbar h1 {
    font-size: 18px;
  }
  .stock-grid {
    grid-template-columns: 1fr;
  }
  .stock-card {
    padding: 12px;
  }
}