:root {
  color-scheme: light;

  /* Elegant semantic tokens */
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --secondary: #8b5cf6;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;

  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --surface-soft: #f1f5f9;
  --text: #111827;
  --text-muted: #4b5563;
  --text-soft: #6b7280;
  --border: #d1d5db;

  --focus: color-mix(in srgb, var(--primary) 26%, white);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 10px 30px rgba(17, 24, 39, 0.08);
  --shadow-lg: 0 20px 50px rgba(17, 24, 39, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Google Sans", "Google Sans Text", "Segoe UI", "Inter", sans-serif;
  font-size: 16px;
  line-height: 1.45;
  color: var(--text);
  background:
    radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.1), transparent 38%),
    radial-gradient(circle at 100% 100%, rgba(139, 92, 246, 0.08), transparent 32%),
    var(--surface-soft);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 16px 20px;
}

.container {
  width: min(1760px, calc(100vw - 32px));
  max-width: 1760px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
}

h1 {
  margin: 0 0 var(--space-1);
  font-family: "Google Sans", "Google Sans Text", "Segoe UI", sans-serif;
  font-size: clamp(32px, 3vw, 40px);
  font-weight: 500;
  letter-spacing: -0.02em;
}

h2 {
  margin: 0;
  font-family: "Google Sans", "Google Sans Text", "Segoe UI", sans-serif;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.subtitle {
  margin: 0 0 var(--space-4);
  color: var(--text-muted);
  font-size: 16px;
}

.menu {
  position: sticky;
  top: var(--space-3);
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 94%, white);
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-sm);
}

.menu-button {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
  transition: border-color 0.16s ease, color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.menu-button:hover {
  border-color: color-mix(in srgb, var(--primary) 48%, white);
  color: var(--text);
  background: var(--surface-alt);
}

.menu-button.active {
  border-color: var(--primary);
  color: #fff;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-hover) 100%);
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.28);
}

[data-tab-section][hidden],
.history-tab-panel[hidden],
[data-forecast-list-tab-panel][hidden],
[data-nextmove-list-tab-panel][hidden],
[data-analytics-section-tab-panel][hidden] {
  display: none;
}

.trade-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.trade-panel .subtitle {
  margin: var(--space-2) 0 var(--space-4);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

form {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: var(--space-3);
}

label {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.form-section-title {
  margin: 0;
  grid-column: 1 / -1;
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.range-caption {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  grid-column: 1 / -1;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  margin: 0;
}

.hours-picker {
  grid-column: 1 / -1;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: var(--space-3);
}

.hours-picker legend {
  padding: 0 var(--space-2);
  font-weight: 500;
}

.hours-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-2);
}

.hour-option {
  position: relative;
}

.hour-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.hour-option span {
  display: block;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.16s ease, color 0.16s ease, background-color 0.16s ease;
}

.hour-option span:hover {
  border-color: color-mix(in srgb, var(--primary) 45%, white);
  color: var(--text);
}

.hour-option input:checked + span {
  border-color: var(--primary);
  color: #fff;
  background: var(--primary);
}

.help-text {
  margin: var(--space-2) 0 0;
  font-size: 14px;
  color: var(--text-muted);
}

input,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.14s ease, box-shadow 0.14s ease;
}

input[type="range"] {
  padding: 0;
  border: 0;
  background: transparent;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus);
}

button {
  margin-top: 0;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  background: var(--primary);
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

button:hover {
  background: var(--primary-hover);
}

button:disabled,
button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

button:focus-visible,
.menu-button:focus-visible,
.history-tab-button:focus-visible,
.hour-option span:focus-visible,
.monitor-remove-button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus);
}

form > button[type="submit"] {
  grid-column: 1 / -1;
  width: fit-content;
  min-width: 240px;
}

.ghost-button {
  border-color: var(--border);
  color: var(--text);
  background: var(--surface);
}

.ghost-button:hover {
  border-color: color-mix(in srgb, var(--primary) 48%, white);
  color: var(--primary-hover);
  background: var(--surface-alt);
}

.danger-button {
  border-color: color-mix(in srgb, var(--danger) 30%, white);
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 8%, white);
}

.danger-button:hover {
  border-color: var(--danger);
  color: #fff;
  background: var(--danger);
}

.table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: auto;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface-alt);
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.01em;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.empty-cell {
  color: var(--text-soft);
}

.trade-preview-list {
  display: grid;
  gap: var(--space-3);
}

.trade-preview-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.trade-preview-item h3 {
  margin: 0 0 var(--space-2);
  font-size: 18px;
  font-weight: 500;
}

.trade-preview-item p {
  margin: 4px 0;
}

.balance-actions {
  display: grid;
  grid-template-columns: minmax(250px, 420px) auto;
  gap: var(--space-3);
  align-items: end;
  margin-top: var(--space-3);
}

.balance-actions button {
  width: fit-content;
  min-width: 200px;
}

.forecast-controls {
  display: grid;
  grid-template-columns: minmax(240px, 360px);
  gap: var(--space-3);
  margin: var(--space-3) 0 var(--space-4);
}

.forecast-history-head {
  margin-top: 0;
}

.forecast-history-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.forecast-history-accordion {
  margin-top: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.forecast-history-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  list-style: none;
  user-select: none;
  font-weight: 500;
  color: var(--text);
}

.forecast-history-summary::-webkit-details-marker {
  display: none;
}

.forecast-history-summary::after {
  content: "▾";
  color: var(--text-muted);
  font-size: 12px;
  transform: rotate(-90deg);
  transition: transform 0.2s ease;
}

.forecast-history-accordion[open] .forecast-history-summary::after {
  transform: rotate(0deg);
}

.forecast-history-content {
  border-top: 1px solid var(--border);
  padding: 0 var(--space-4) var(--space-4);
  background: var(--surface-alt);
}

.forecast-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
}

.forecast-chip.hit {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 45%, white);
  background: color-mix(in srgb, var(--success) 9%, white);
}

.forecast-chip.miss {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, white);
  background: color-mix(in srgb, var(--danger) 8%, white);
}

.cell-subtle {
  color: var(--text-soft);
  font-size: 12px;
}

.history-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-3) 0 var(--space-4);
}

.history-tab-button {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  color: var(--text-muted);
  background: var(--surface);
}

.history-tab-button:hover {
  border-color: color-mix(in srgb, var(--primary) 48%, white);
  color: var(--primary-hover);
  background: var(--surface-alt);
}

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

.trailing-monitor {
  margin: var(--space-3) 0 var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.trailing-monitor h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
}

.monitor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--space-2);
  margin: var(--space-2) 0 var(--space-3);
}

.monitor-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  background: var(--surface-alt);
}

.monitor-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 12px;
}

.monitor-card strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
  font-weight: 500;
}

.monitor-card.bad {
  border-color: color-mix(in srgb, var(--danger) 35%, white);
  background: color-mix(in srgb, var(--danger) 8%, white);
}

.monitor-card.warn {
  border-color: color-mix(in srgb, var(--warning) 35%, white);
  background: color-mix(in srgb, var(--warning) 10%, white);
}

.trailing-monitor-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0 0 var(--space-3);
}

.trailing-monitor-filter {
  min-width: 180px;
}

.trailing-monitor-filter span {
  display: inline-block;
  margin-bottom: 6px;
  color: var(--text-soft);
  font-size: 12px;
}

.monitor-remove-button {
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 500;
}

.status {
  min-height: 24px;
  margin-top: var(--space-4);
  font-size: 16px;
  font-weight: 500;
}

.status.ok {
  color: var(--success);
}

.status.error {
  color: var(--danger);
}

/* Login */
body.login-page {
  align-items: center;
  padding: 24px 16px;
}

.login-shell {
  width: min(1040px, calc(100vw - 24px));
  display: grid;
  grid-template-columns: minmax(320px, 1.1fr) minmax(320px, 0.9fr);
  gap: var(--space-4);
  align-items: stretch;
}

.login-hero,
.login-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.login-hero {
  padding: var(--space-6);
  display: grid;
  align-content: center;
  background:
    radial-gradient(circle at 20% 0%, rgba(59, 130, 246, 0.14), transparent 40%),
    radial-gradient(circle at 100% 100%, rgba(139, 92, 246, 0.12), transparent 30%),
    var(--surface);
}

.login-badge {
  margin: 0 0 var(--space-3);
  width: fit-content;
  padding: 6px 12px;
  border: 1px solid color-mix(in srgb, var(--primary) 36%, white);
  border-radius: 999px;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, white);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.login-hero h1 {
  margin: 0 0 var(--space-2);
  font-size: clamp(32px, 3vw, 40px);
  font-weight: 500;
}

.login-features {
  margin: var(--space-4) 0 0;
  padding-left: 18px;
  display: grid;
  gap: var(--space-2);
  color: var(--text);
  font-size: 16px;
  font-weight: 400;
}

.login-card {
  padding: var(--space-5);
  display: grid;
  align-content: center;
}

.login-card .subtitle {
  margin: var(--space-2) 0 var(--space-4);
}

.login-form {
  grid-template-columns: 1fr;
}

.login-form > button[type="submit"] {
  grid-column: auto;
  width: 100%;
  min-width: 0;
}

.login-card .status {
  margin-top: var(--space-3);
}

@media (max-width: 1100px) {
  .container {
    width: min(100%, calc(100vw - 20px));
    border-radius: 16px;
    padding: var(--space-4);
  }

  form {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

  .balance-actions {
    grid-template-columns: 1fr;
  }

  .balance-actions button {
    width: 100%;
    min-width: 0;
  }
}

@media (max-width: 980px) {
  .login-shell {
    grid-template-columns: 1fr;
    width: min(680px, calc(100vw - 20px));
  }

  .login-hero {
    padding: var(--space-5);
  }
}

@media (max-width: 700px) {
  body {
    padding: 24px 8px 16px;
  }

  .container {
    width: calc(100vw - 12px);
    padding: var(--space-3);
    border-radius: 14px;
  }

  h1 {
    font-size: 32px;
  }

  .menu {
    position: static;
    flex-direction: column;
    padding: var(--space-2);
  }

  .hours-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  form {
    grid-template-columns: 1fr;
  }

  .forecast-controls {
    grid-template-columns: 1fr;
  }

  th,
  td {
    padding: 10px;
    font-size: 14px;
  }

  .login-shell {
    width: calc(100vw - 12px);
  }

  .login-hero,
  .login-card {
    padding: var(--space-4);
  }
}