/**
 * ============================================================================
 *  ESTILOS — Simulador Sistema Eléctrico Español
 * ============================================================================
 *  Dashboard profesional con glassmorphism, variables CSS para tematización
 *  y diseño responsive.
 *
 *  Autor: David Antizar
 * ============================================================================
 */

/* ── Variables CSS ───────────────────────────────────────────────────────── */

:root {
    /* Paleta primaria */
    --c-primary:      #00f5d4;
    --c-primary-dim:  rgba(0, 245, 212, 0.15);
    --c-secondary:    #00bbf9;
    --c-accent:       #9b5de5;

    /* Feedback */
    --c-success:  #00d68f;
    --c-warning:  #ffaa00;
    --c-danger:   #ef4444;

    /* Fondos */
    --bg-body:    linear-gradient(135deg, #0b0f1a 0%, #151b2e 40%, #1a1f35 100%);
    --bg-panel:   rgba(15, 20, 40, 0.75);
    --bg-card:    rgba(255, 255, 255, 0.03);
    --bg-input:   rgba(0, 0, 0, 0.25);
    --bg-hover:   rgba(255, 255, 255, 0.05);

    /* Bordes */
    --border:      rgba(148, 163, 184, 0.10);
    --border-light: rgba(148, 163, 184, 0.18);

    /* Texto */
    --tx-primary:   #f1f5f9;
    --tx-secondary: #94a3b8;
    --tx-muted:     #64748b;

    /* Tipografía */
    --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
    --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

    /* Espaciado */
    --gap:      12px;
    --radius:   10px;
    --radius-lg: 14px;
    --radius-sm: 6px;

    /* Sombras */
    --shadow-sm:  0 1px  3px rgba(0,0,0,0.3);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg:  0 8px 30px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px rgba(0, 245, 212, 0.15);

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ────────────────────────────────────────────────────────── */

*, *::before, *::after {
    margin: 0; padding: 0; box-sizing: border-box;
}

html { font-size: 14px; }

body {
    font-family: var(--font-sans);
    background: var(--bg-body);
    color: var(--tx-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}

a { color: var(--c-secondary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout Principal ────────────────────────────────────────────────────── */

#app {
    display: grid;
    grid-template-columns: 380px 1fr;
    grid-template-rows: auto 1fr;
    height: 100vh;
    gap: var(--gap);
    padding: var(--gap);
}

/* ── Header ──────────────────────────────────────────────────────────────── */

header {
    grid-column: 1 / -1;
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%, var(--c-primary) 20%, var(--c-secondary) 50%,
        var(--c-accent) 80%, transparent 100%);
    opacity: 0.5;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: var(--shadow-glow);
}

h1 {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary), var(--c-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-subtitle {
    font-size: 0.7rem;
    color: var(--tx-muted);
    margin-top: 1px;
}

.header-meta {
    display: flex;
    align-items: center;
    gap: 14px;
}

.header-author {
    text-align: right;
}

.header-author-name {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--c-primary);
}

.header-author-role {
    font-size: 0.65rem;
    color: var(--tx-muted);
}

.header-scenario-badge {
    background: var(--c-primary-dim);
    border: 1px solid rgba(0, 245, 212, 0.25);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--c-primary);
    white-space: nowrap;
}

/* ── Sidebar (Controles) ─────────────────────────────────────────────────── */

.sidebar {
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
    background: rgba(0, 245, 212, 0.3);
    border-radius: 4px;
}
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--c-primary); }

.sidebar-header {
    padding: 12px 14px 8px;
    position: sticky;
    top: 0;
    z-index: 5;
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.sidebar-body {
    padding: 0 14px 14px;
    flex: 1;
}

/* Botones principales */
.action-row {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

/* Tabs */
.sidebar-tabs {
    display: flex;
    gap: 2px;
    background: rgba(0, 0, 0, 0.25);
    padding: 3px;
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
}

.sidebar-tab {
    flex: 1;
    padding: 7px 4px;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--tx-muted);
    transition: all 0.2s var(--ease);
    user-select: none;
    border: none;
    background: none;
}

.sidebar-tab:hover { color: var(--tx-secondary); background: rgba(255,255,255,0.03); }

.sidebar-tab.active {
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    color: #0b0f1a;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(0, 245, 212, 0.25);
}

/* Grupo de controles */
.control-group {
    margin-bottom: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.control-group-header {
    padding: 10px 12px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--c-primary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}

.control-group-header:hover {
    background: var(--bg-hover);
}

.control-group-header .caret {
    margin-left: auto;
    font-size: 0.6rem;
    transition: transform 0.2s;
    color: var(--tx-muted);
}

.control-group.collapsed .caret { transform: rotate(-90deg); }
.control-group.collapsed .control-group-body { display: none; }

.control-group-body {
    padding: 10px 12px;
}

/* Sliders */
.slider-row {
    margin-bottom: 10px;
}

.slider-row:last-child { margin-bottom: 0; }

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 4px;
    font-size: 0.72rem;
    color: var(--tx-secondary);
}

.slider-label-name {
    display: flex;
    align-items: center;
    gap: 4px;
}

.slider-value {
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--c-primary);
    min-width: 60px;
    text-align: right;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(148, 163, 184, 0.12);
    border-radius: 4px;
    cursor: pointer;
    outline: none;
    transition: background 0.2s;
}

input[type="range"]:hover {
    background: rgba(148, 163, 184, 0.2);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(0, 245, 212, 0.4);
    transition: transform 0.15s, box-shadow 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 14px rgba(0, 245, 212, 0.6);
}

input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    border: none;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(0, 245, 212, 0.4);
}

/* Input numérico (semilla) */
input[type="number"] {
    width: 100%;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    background: var(--bg-input);
    color: var(--tx-primary);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    outline: none;
    transition: border-color 0.2s;
}

input[type="number"]:focus {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 2px rgba(0, 245, 212, 0.15);
}

/* Checkbox */
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    color: var(--tx-secondary);
    cursor: pointer;
}

input[type="checkbox"] {
    accent-color: var(--c-primary);
    width: 14px;
    height: 14px;
}

/* Selects */
select {
    background: var(--bg-input);
    color: var(--tx-primary);
    border: 1px solid var(--border-light);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.72rem;
    font-family: var(--font-sans);
    cursor: pointer;
    outline: none;
}

select:focus {
    border-color: var(--c-primary);
}

/* ── Botones ─────────────────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: all 0.2s var(--ease);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    color: #0b0f1a;
    box-shadow: 0 2px 12px rgba(0, 245, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 245, 212, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--tx-secondary);
    border-color: var(--border-light);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--tx-primary);
}

.btn-ghost.active {
    border-color: var(--c-primary);
    color: var(--c-primary);
    background: var(--c-primary-dim);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.65rem;
}

.btn-full { flex: 1; }

/* Animación del botón simular */
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 2px 12px rgba(0, 245, 212, 0.3); }
    50%      { box-shadow: 0 2px 24px rgba(0, 245, 212, 0.55); }
}

.btn-simulate { animation: pulse-glow 2.5s infinite; }
.btn-simulate:hover { animation: none; }

/* ── Escenarios (pills) ──────────────────────────────────────────────────── */

.scenario-pills {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.pill {
    padding: 5px 10px;
    border-radius: 16px;
    font-size: 0.65rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--tx-secondary);
    transition: all 0.2s var(--ease);
    user-select: none;
}

.pill:hover { border-color: var(--border-light); background: var(--bg-hover); }

.pill.active {
    background: var(--c-primary-dim);
    border-color: rgba(0, 245, 212, 0.35);
    color: var(--c-primary);
    font-weight: 600;
}

.pill.reference {
    background: rgba(251, 191, 36, 0.12);
    border-color: rgba(251, 191, 36, 0.3);
    color: #fbbf24;
}

.pill.reference.active {
    background: rgba(251, 191, 36, 0.2);
    border-color: #fbbf24;
}

/* ── Stats Grid (sidebar inferior) ───────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 10px 14px 12px;
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.15);
}

.stat-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 8px 6px;
    border-radius: var(--radius-sm);
    text-align: center;
    transition: border-color 0.3s;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 800;
    font-family: var(--font-mono);
    line-height: 1.2;
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.6rem;
    color: var(--tx-muted);
    margin-top: 2px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.stat-box.warning {
    border-color: rgba(255, 170, 0, 0.3);
}

.stat-box.warning .stat-value {
    background: linear-gradient(135deg, #ff6b6b, #ffaa00);
    -webkit-background-clip: text;
    background-clip: text;
}

.stat-box.success {
    border-color: rgba(0, 214, 143, 0.3);
}

.stat-box.success .stat-value {
    background: linear-gradient(135deg, var(--c-primary), var(--c-success));
    -webkit-background-clip: text;
    background-clip: text;
}

/* ── Main Content ────────────────────────────────────────────────────────── */

.main-content {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: var(--gap);
    overflow: hidden;
    min-height: 0;
}

/* ── Viz Panel ───────────────────────────────────────────────────────────── */

.viz-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    position: relative;
    overflow: hidden;
}

.viz-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), var(--c-accent));
    opacity: 0.7;
}

.viz-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
}

.viz-title {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--tx-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.viz-controls {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 0.7rem;
}

.viz-controls label {
    color: var(--tx-muted);
}

/* ── Critical Panel (Indicadores) ────────────────────────────────────────── */

.critical-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.critical-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.critical-card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-sm);
}

.critical-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--tx-muted);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.critical-value {
    font-size: 1.6rem;
    font-weight: 800;
    font-family: var(--font-mono);
    line-height: 1.1;
}

.critical-value.danger  { color: var(--c-danger); }
.critical-value.warning { color: var(--c-warning); }
.critical-value.success { color: var(--c-primary); }

.critical-sub {
    font-size: 0.65rem;
    color: var(--tx-muted);
    margin-top: 6px;
    line-height: 1.5;
}

/* ── Charts Row ──────────────────────────────────────────────────────────── */

.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap);
    min-height: 0;
}

/* ── Comparison Grid ─────────────────────────────────────────────────────── */

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-top: 8px;
}

.comparison-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 6px;
    text-align: center;
}

.comparison-title {
    font-size: 0.6rem;
    color: var(--tx-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.comparison-values {
    display: flex;
    justify-content: center;
    gap: 4px;
    align-items: baseline;
    font-size: 0.72rem;
}

.val-2025 { color: #fbbf24; font-family: var(--font-mono); }
.val-sim  { color: var(--c-primary); font-weight: 800; font-size: 0.9rem; font-family: var(--font-mono); }

.val-diff {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    font-family: var(--font-mono);
    padding: 1px 6px;
    border-radius: 3px;
    margin-top: 3px;
}

.val-diff.positive { background: rgba(0, 245, 212, 0.15); color: var(--c-primary); }
.val-diff.negative { background: rgba(239, 68, 68, 0.15); color: var(--c-danger); }

/* ── Precio Stats inline ─────────────────────────────────────────────────── */

.price-stats-inline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 5px;
    margin-top: 6px;
}

.price-stat-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 4px;
    text-align: center;
}

.price-stat-label {
    font-size: 0.58rem;
    color: var(--tx-muted);
    text-transform: uppercase;
    margin-bottom: 2px;
}

.price-stat-value {
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--c-primary);
}

/* ── Info Box (sidebar documentation) ────────────────────────────────────── */

.info-box {
    background: rgba(0, 187, 249, 0.06);
    border: 1px solid rgba(0, 187, 249, 0.18);
    border-radius: var(--radius);
    padding: 12px;
    margin-bottom: 10px;
}

.info-box h4 {
    font-size: 0.72rem;
    color: var(--c-secondary);
    margin-bottom: 8px;
    font-weight: 700;
}

.info-box p {
    font-size: 0.68rem;
    color: var(--tx-secondary);
    line-height: 1.6;
    margin-bottom: 6px;
}

.info-box ul {
    font-size: 0.68rem;
    color: var(--tx-secondary);
    margin-left: 14px;
    line-height: 1.7;
}

.info-box ul li { margin-bottom: 2px; }
.info-box strong { color: var(--tx-primary); }

/* ── Merit Order ─────────────────────────────────────────────────────────── */

.merit-order {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    margin: 8px 0;
}

.merit-item {
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 3px 7px;
    border-radius: 4px;
    font-size: 0.62rem;
    font-weight: 700;
}

.merit-arrow {
    color: var(--c-primary);
    font-size: 0.7rem;
}

/* ── PNIEC Status ────────────────────────────────────────────────────────── */

.pniec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.72rem;
}

.pniec-item:last-child { border-bottom: none; }

.pniec-label { font-weight: 500; }

.pniec-detail {
    font-size: 0.6rem;
    color: var(--tx-muted);
    margin-top: 1px;
}

.pniec-status {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
    font-size: 0.65rem;
    white-space: nowrap;
}

.pniec-status.cumple   { color: var(--c-primary); }
.pniec-status.no-cumple { color: var(--c-danger); }
.pniec-status.parcial  { color: var(--c-warning); }

/* ── Semilla & utilidades sidebar ────────────────────────────────────────── */

.seed-input-row {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}

.copy-toast {
    font-size: 0.65rem;
    color: var(--c-primary);
    margin-top: 4px;
}

.hint-text {
    font-size: 0.6rem;
    color: var(--tx-muted);
    margin-top: 3px;
    line-height: 1.4;
}

/* ── Footer info en paneles ──────────────────────────────────────────────── */

.panel-footer {
    font-size: 0.65rem;
    color: var(--tx-muted);
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ── Main Tabs ───────────────────────────────────────────────────────────── */

.main-tabs {
    display: flex;
    gap: 2px;
    background: rgba(0, 0, 0, 0.2);
    padding: 3px;
    border-radius: var(--radius-sm);
}

.main-tab {
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--tx-muted);
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
    border: none;
    background: none;
}

.main-tab:hover { color: var(--tx-secondary); }

.main-tab.active {
    background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
    color: #0b0f1a;
    font-weight: 700;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 1200px) {
    #app {
        grid-template-columns: 340px 1fr;
    }
    .critical-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    #app {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
        height: auto;
        min-height: 100vh;
    }

    body { overflow: auto; }

    .sidebar {
        max-height: 50vh;
    }

    .charts-row {
        grid-template-columns: 1fr;
    }

    .critical-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ── Animations ──────────────────────────────────────────────────────────── */

@keyframes fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fade-in 0.3s var(--ease); }

/* ── Utilidades ──────────────────────────────────────────────────────────── */

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gap-sm { gap: 4px; }
.gap-md { gap: 8px; }
.mt-sm { margin-top: 6px; }
.mt-md { margin-top: 10px; }
.text-muted { color: var(--tx-muted); }
.text-sm { font-size: 0.68rem; }
.mono { font-family: var(--font-mono); }

/* ── Loading overlay ─────────────────────────────────────────────────────── */

.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(11, 15, 26, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(148, 163, 184, 0.15);
    border-top-color: var(--c-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}