/* ============================================
   SWISS DESIGN FINANCE DASHBOARD
   Clean, grid-based, typographic design system
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---- Design Tokens ---- */
:root {
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  /* Colors — Light Swiss Palette */
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f7;
  --bg-card: #f0f0f0;
  --bg-card-hover: #ebebeb;
  --bg-input: #f5f5f5;
  --bg-header: rgba(255, 255, 255, 0.90);

  --border-primary: #e2e2e2;
  --border-secondary: #d4d4d4;
  --border-accent: #cccccc;

  --text-primary: #0a0a0a;
  --text-secondary: #555555;
  --text-tertiary: #999999;
  --text-label: #888888;

  /* Accent Colors */
  --accent-red: #d32f2f;
  --accent-red-dim: rgba(211, 47, 47, 0.08);
  --accent-green: #2e7d32;
  --accent-green-dim: rgba(46, 125, 50, 0.08);
  --accent-blue: #1565c0;
  --accent-blue-dim: rgba(21, 101, 192, 0.08);
  --accent-amber: #e65100;
  --accent-amber-dim: rgba(230, 81, 0, 0.08);

  /* Spacing (8px grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 64px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 350ms ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* ---- Layout ---- */
.dashboard {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

/* ---- Header ---- */
.header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-9);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-primary);
}

.header__title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.header__subtitle {
  font-size: 0.6875rem;
  font-weight: 400;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ---- Status Bar ---- */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-7);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
}

.status-bar__left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.status-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}

.status-indicator--loading {
  background-color: var(--accent-amber);
}

.status-indicator--error {
  background-color: var(--accent-red);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.status-bar__text {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.status-bar__right {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
}

.status-bar__actions {
  display: flex;
  gap: var(--space-2);
}

/* ---- Refresh Button ---- */
.refresh-btn {
  font-family: var(--font-sans);
  font-size: 0.625rem;
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  transition: all var(--transition-fast);
}

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

.refresh-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.refresh-btn--secondary {
  color: var(--text-tertiary);
  border-color: var(--border-primary);
}

.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-7);
}

/* ==============================================
   5. ADD TICKER & CONTROLS
   ============================================== */
.add-ticker {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: 0;
}

.add-ticker__input {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  outline: none;
  width: 140px;
  text-transform: uppercase;
  transition: border-color var(--transition-fast);
  letter-spacing: 0.06em;
}

.add-ticker__input::placeholder {
  color: var(--text-tertiary);
  text-transform: none;
  letter-spacing: 0;
}

.add-ticker__input:focus {
  border-color: var(--text-secondary);
}

.add-ticker__btn {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  background: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: opacity var(--transition-fast);
}

.add-ticker__btn:hover {
  opacity: 0.85;
}

.add-ticker__btn:active {
  opacity: 0.7;
}

.filter-split {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-split__label {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-right: var(--space-1);
}

.filter-chip {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--border-secondary);
  border-radius: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

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

.filter-chip.active {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-primary);
}

.filter-chip:focus-visible {
  outline: 2px solid var(--text-tertiary);
  outline-offset: 2px;
}

/* ---- Data Table ---- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead {
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table th {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: left;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-primary);
  border-bottom: 2px solid var(--border-accent);
}

.data-table th:last-child {
  text-align: right;
}

/* Sortable column headers */
.data-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table th.sortable:hover {
  color: var(--text-secondary);
}

.data-table th.sortable::after {
  content: ' ↕';
  opacity: 0.3;
  font-size: 0.55rem;
}

.data-table th.sortable.sort-active::after {
  opacity: 1;
}

.data-table th.sortable.sort-active[data-dir="desc"]::after {
  content: ' ↓';
}

.data-table th.sortable.sort-active[data-dir="asc"]::after {
  content: ' ↑';
}

.data-table th.sort-active {
  color: var(--text-primary);
}

.data-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-primary);
  vertical-align: middle;
  transition: background-color var(--transition-fast);
}

.data-table tr:hover td {
  background-color: var(--bg-card-hover);
}

/* Ticker Cell */
.cell-ticker {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.cell-ticker__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cell-ticker__symbol {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

.cell-ticker__name {
  font-size: 0.625rem;
  color: var(--text-tertiary);
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}

.cell-ticker__remove {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-secondary);
  background: transparent;
  color: var(--text-tertiary);
  font-size: 0.625rem;
  cursor: pointer;
  border-radius: 3px;
  opacity: 1;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.cell-ticker__remove:hover {
  color: var(--accent-red);
  background: var(--accent-red-dim);
  border-color: var(--accent-red);
}

/* Price Cell */
.cell-price {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.cell-price--below {
  color: var(--accent-red);
}

.cell-price--above {
  color: var(--accent-green);
}

/* Days Below $1 Cell */
.cell-days {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.cell-days--danger { color: var(--accent-red); }
.cell-days--warning { color: var(--accent-amber); }
.cell-days--safe { color: var(--accent-green); }
.cell-days--na {
  color: var(--text-tertiary);
  font-weight: 400;
  font-size: 0.75rem;
}

/* Volume Cell */
.cell-volume {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Split Cell */
.cell-split {
  text-align: right;
}

.cell-split__date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
}

.cell-split__ago {
  font-size: 0.6875rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.cell-split--none {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* ---- Loading Skeleton ---- */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
  height: 14px;
  width: 80px;
}

.skeleton--wide { width: 120px; }
.skeleton--narrow { width: 50px; }

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-6);
  color: var(--text-tertiary);
}

.empty-state__icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  opacity: 0.3;
}

.empty-state__text {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

/* ---- Footer ---- */
.footer {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__note {
  font-size: 0.625rem;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

.footer__rate {
  font-size: 0.625rem;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---- Progress Bar (rate limit visual) ---- */
.progress-bar {
  width: 60px;
  height: 3px;
  background: var(--border-primary);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--accent-blue);
  border-radius: 2px;
  transition: width var(--transition-slow);
  width: 0%;
}

/* ---- Row fade-in animation ---- */
.data-table tr {
  animation: fadeInRow 0.3s ease forwards;
}

@keyframes fadeInRow {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Tooltip ---- */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-1) var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.625rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .dashboard {
    padding: var(--space-6) var(--space-4);
  }

  .header {
    flex-direction: column;
    gap: var(--space-2);
  }

  .data-table {
    font-size: 0.8125rem;
  }

  .data-table th,
  .data-table td {
    padding: var(--space-3);
  }

  .cell-days__number {
    font-size: 1rem;
  }

  .footer {
    flex-direction: column;
    gap: var(--space-3);
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .status-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}