/* Arbistat.io - Sistema de diseño */
:root {
    --bg: #0d0f12;
    --bg-elevated: #15181d;
    --bg-card: #1a1e24;
    --text: #e8eaed;
    --text-muted: #8b9298;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --success: #22c55e;
    --error: #ef4444;
    --border: #2a3038;
    --font-sans: 'DM Sans', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 15, 18, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.logo span {
    color: var(--accent);
}

.nav a {
    margin-left: 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
}

.nav a:hover {
    color: var(--accent);
}

/* Hero */
.hero {
    padding: 4rem 0 3rem;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin: 0 0 0.75rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin: 0;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

/* Dashboard grid: 2 cols izq, 1 col der */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 1rem;
    padding: 1rem 1.5rem;
    max-width: 1600px;
    margin: 0 auto;
    min-height: calc(100vh - 140px);
}

.grid-cell {
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.grid-cell:first-child {
    grid-area: 1 / 1;
}

.grid-cell:nth-child(2) {
    grid-area: 2 / 1;
}

.grid-cell.grid-right {
    grid-area: 1 / 2 / -1 / -1;
}

.grid-cell .container {
    max-width: none;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.grid-cell .container .chart-container {
    flex: 1;
}

/* Sections */
.section {
    padding: 1rem 0;
}

.section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
}

.section-desc {
    color: var(--text-muted);
    margin: 0 0 0.75rem;
    font-size: 0.875rem;
}

/* Controls */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: flex-end;
    margin-bottom: 0.75rem;
}

.controls label {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.controls select,
.controls input[type="date"] {
    padding: 0.5rem 0.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    min-width: 140px;
}

.controls select:focus,
.controls input:focus {
    outline: none;
    border-color: var(--accent);
}

.control-checkbox {
    flex-direction: row !important;
    align-items: center;
    gap: 0.5rem;
}

.control-checkbox input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.control-checkbox span {
    white-space: nowrap;
}

.btn {
    padding: 0.5rem 1.25rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: var(--accent-hover);
}

/* Chart */
.chart-container {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    min-height: 200px;
    flex: 1;
    cursor: pointer;
}

.chart-container:hover::after {
    content: 'Clic para pantalla completa';
    position: absolute;
    bottom: 1rem;
    right: 1.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.8;
}

.chart-container:fullscreen,
.chart-container:-webkit-full-screen {
    cursor: default;
    padding: 2rem;
}

.chart-container:fullscreen::after,
.chart-container:-webkit-full-screen::after {
    content: 'Esc para salir';
}

.chart-container canvas {
    max-height: 100%;
    height: 100% !important;
}

.chart-container:fullscreen canvas,
.chart-container:-webkit-full-screen canvas {
    max-height: none;
    height: 100% !important;
}

/* Tooltip visible en fullscreen (Chart.js) */
.chart-container div[role="tooltip"],
.chart-container .chartjs-tooltip,
.chart-container #chartjs-tooltip-arbistat {
    z-index: 99999 !important;
    pointer-events: none;
}

.loading,
.error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.chart-container .error[hidden],
.chart-container .loading[hidden] {
    display: none !important;
}

/* Footer */
.footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer .container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer p {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.footer a {
    color: var(--accent);
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        min-height: auto;
    }

    .grid-cell.grid-right {
        grid-area: auto;
    }
}

@media (max-width: 640px) {
    .nav {
        display: none;
    }

    .controls {
        flex-direction: column;
    }

    .controls label {
        width: 100%;
    }

    .controls select,
    .controls input[type="date"] {
        min-width: 100%;
    }

    .chart-container {
        min-height: 280px;
    }
}