:root {
  --surface-page: #0f1011;
  --surface-card: #1a1b1d;
  --surface-tile: #232427;
  --text-primary: #f2f2f0;
  --text-secondary: #a8a7a2;
  --text-muted: #76746f;
  --border: rgba(255,255,255,0.08);
  --green-bg: rgba(0,131,0,0.15);
  --green-text: #4caf50;
  --red-bg: rgba(211,59,59,0.15);
  --red-text: #e57373;
  --yellow-bg: rgba(255,193,7,0.15);
  --yellow-text: #ffc107;
  --blue-bg: rgba(33,150,243,0.15);
  --blue-text: #64b5f6;
  --orange-bg: rgba(255,152,0,0.15);
  --orange-text: #ffb74d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--surface-page);
  color: var(--text-primary);
  padding: 1.5rem;
  max-width: 720px;
  margin: 0 auto;
}

h1 {
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 1rem;
}

.card {
  background: var(--surface-card);
  border-radius: 12px;
  border: 0.5px solid var(--border);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 6px;
  font-weight: 500;
  transition: all 0.2s;
  font-family: inherit;
}

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

.main-nav {
  display: flex;
  gap: 16px;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
}

.main-nav a:hover {
  color: var(--text-primary);
  background: var(--surface-tile);
}

.main-nav a.active {
  color: var(--blue-text);
  background: var(--blue-bg);
}

.section-title {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    padding-bottom: 5px;
    margin-top: 30px;
}

.big-number-box {
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border);
}
.big-number-box.corte { background: var(--yellow-bg); border-color: var(--yellow-text); color: var(--yellow-text); }
.big-number-box.liq { background: var(--red-bg); border-color: var(--red-text); color: var(--red-text); }
.big-title { font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 5px; opacity: 0.9; }
.big-val { font-size: 32px; font-weight: bold; font-family: monospace; }
.big-desc { font-size: 12px; margin-top: 8px; opacity: 0.7; }

.escala-container {
    position: relative;
    height: 40px;
    margin: 40px 0 20px 0;
    border-radius: 4px;
    background: var(--surface-tile);
}
.escala-marker {
    position: absolute;
    top: -5px; bottom: -5px;
    width: 2px;
    transform: translateX(-50%);
}
.escala-label {
    position: absolute;
    top: -20px;
    transform: translateX(-50%);
    font-size: 10px;
    white-space: nowrap;
    color: var(--text-muted);
}
.escala-label-bottom {
    position: absolute;
    bottom: -20px;
    transform: translateX(-50%);
    font-size: 10px;
    white-space: nowrap;
    color: var(--text-muted);
}
.marker-entrada { background: var(--text-secondary); }
.marker-margen { background: var(--green-text); }
.marker-compra { background: var(--orange-text); }
.marker-corte { background: var(--yellow-text); width: 4px; z-index: 10; }
.marker-liq { background: var(--red-text); width: 4px; z-index: 10; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
    font-size: 13px;
}
.data-table th {
    text-align: left;
    padding: 8px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    font-weight: normal;
}
.data-table td {
    padding: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    font-family: monospace;
}
.data-table tbody tr:hover {
    background: var(--surface-tile);
}
.status-vivo { color: var(--green-text); }
.status-corte { color: var(--yellow-text); }
.status-liq { color: var(--red-text); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 15px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
@media(max-width: 600px) {
    .grid-4, .grid-3 { grid-template-columns: 1fr 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
}

.bloque-inst {
    background: var(--surface-tile);
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border);
}
.bloque-inst h4 { margin: 0 0 10px 0; color: var(--blue-text); font-size: 13px; text-transform: uppercase; }
.bloque-inst p { margin: 5px 0; font-size: 13px; line-height: 1.4; color: var(--text-secondary); }
.bloque-inst .mono { font-family: monospace; color: var(--text-primary); font-weight: bold; }

.prosa-text {
    font-size: 14px;
    line-height: 1.5;
    margin: 15px 0;
    color: var(--text-secondary);
    text-align: center;
}

.input-huge {
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border);
    color: var(--text-primary);
    font-size: 24px;
    font-family: monospace;
    width: 150px;
    text-align: center;
    outline: none;
}
.input-huge:focus { border-color: var(--blue-text); }