/* =============================================================
   app.css — Sistema de diseño unificado
   Cargar ANTES de estilos.css / dashboard.css / mobile.css.
   Define tokens, overrides de Bootstrap, dark mode y mejoras a11y.
   ============================================================= */

/* ---------- Tokens base ---------- */
:root {
    color-scheme: light;  /* Forzado light por defecto. Dark solo via toggle. */

    /* Marca (alineado con estilos.css existentes) */
    --brand-50:  #eff6ff;
    --brand-100: #dbeafe;
    --brand-200: #bfdbfe;
    --brand-300: #93c5fd;
    --brand-400: #60a5fa;
    --brand-500: #2563eb;
    --brand-600: #1d4ed8;
    --brand-700: #1e40af;
    --brand-800: #1e3a8a;
    --brand-900: #172554;

    /* Estados semánticos (consistentes en todas las vistas) */
    --status-present-bg: #dcfce7;  --status-present-fg: #15803d;
    --status-late-bg:    #fef3c7;  --status-late-fg:    #b45309;
    --status-absent-bg:  #fee2e2;  --status-absent-fg:  #b91c1c;
    --status-leave-bg:   #e0e7ff;  --status-leave-fg:   #4338ca;
    --status-pending-bg: #f3f4f6;  --status-pending-fg: #4b5563;

    /* Superficies y tipografía */
    --surface-0: #ffffff;
    --surface-1: #f8fafc;
    --surface-2: #f1f5f9;
    --surface-3: #e2e8f0;
    --text-1:    #0f172a;
    --text-2:    #334155;
    --text-3:    #64748b;
    --border:    #e5e7eb;
    --border-strong: #cbd5e1;

    /* Espaciado / radius / sombra (tokens) */
    --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
    --space-4: 1rem;     --space-5: 1.5rem;   --space-6: 2rem;
    --space-7: 3rem;
    --radius-sm: 6px;    --radius-md: 10px;   --radius-lg: 16px; --radius-xl: 22px;
    --shadow-1: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 1px rgba(15, 23, 42, 0.06);
    --shadow-2: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-3: 0 12px 32px rgba(15, 23, 42, 0.12);

    /* Áreas seguras (iPhone notch) */
    --sa-top:    env(safe-area-inset-top, 0px);
    --sa-bottom: env(safe-area-inset-bottom, 0px);
    --sa-left:   env(safe-area-inset-left, 0px);
    --sa-right:  env(safe-area-inset-right, 0px);

    /* Tipografía fluida (clamp escalable) */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: clamp(1.05rem, 0.95rem + 0.4vw, 1.2rem);
    --font-size-xl: clamp(1.25rem, 1.1rem + 0.7vw, 1.6rem);
    --font-size-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
    --font-stack: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI',
                  Roboto, 'Helvetica Neue', Arial, sans-serif;

    /* Override de Bootstrap (toma efecto solo para componentes nuevos) */
    --bs-primary: var(--brand-600);
    --bs-primary-rgb: 29, 78, 216;
    --bs-link-color: var(--brand-700);
    --bs-link-hover-color: var(--brand-800);
    --bs-border-radius: var(--radius-md);
    --bs-border-radius-sm: var(--radius-sm);
    --bs-border-radius-lg: var(--radius-lg);
}

/* ---------- Dark mode — solo via toggle, NO automatico ---------- */
html[data-theme="dark"] {
    color-scheme: dark;
    --surface-0: #0f172a;
    --surface-1: #1e293b;
    --surface-2: #334155;
    --surface-3: #475569;
    --text-1:    #f1f5f9;
    --text-2:    #cbd5e1;
    --text-3:    #94a3b8;
    --border:    #334155;
    --border-strong: #475569;

    --status-present-bg: #064e3b;  --status-present-fg: #6ee7b7;
    --status-late-bg:    #78350f;  --status-late-fg:    #fcd34d;
    --status-absent-bg:  #7f1d1d;  --status-absent-fg:  #fca5a5;
    --status-leave-bg:   #312e81;  --status-leave-fg:   #c7d2fe;
    --status-pending-bg: #1f2937;  --status-pending-fg: #d1d5db;

    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-2: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-3: 0 12px 32px rgba(0, 0, 0, 0.5);
}
html[data-theme="dark"] body.bg-light {
    background-color: var(--surface-1) !important;
    color: var(--text-1);
}

/* ---------- Accesibilidad ---------- */

/* Respeta usuarios que pidieron reducir animación */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus visible consistente (anillo) */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 3px solid var(--brand-400);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Quitar outline cuando se navega con mouse, mantenerlo con teclado */
:where(a, button, input, select, textarea, [tabindex]):focus:not(:focus-visible) {
    outline: none;
}

/* Skip link para lectores de pantalla / teclado */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--brand-700);
    color: #fff;
    padding: 8px 16px;
    z-index: 9999;
    border-radius: 0 0 var(--radius-sm) 0;
    text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ---------- Tipografía + lectura ---------- */
body {
    font-family: var(--font-stack);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    line-height: 1.55;
}

/* Mejor renderizado de números en tablas (estilo tabular) */
.tabular-nums, table td, table th {
    font-variant-numeric: tabular-nums;
}

/* ---------- Layout responsive con safe-area ---------- */
body {
    padding-left:  env(safe-area-inset-left,  0);
    padding-right: env(safe-area-inset-right, 0);
}

.bottom-nav,
.mobile-bottom-nav {
    padding-bottom: calc(0.5rem + var(--sa-bottom));
}

.mobile-header,
header.sticky-top,
nav.sticky-top {
    padding-top: calc(1rem + var(--sa-top));
}

/* ---------- Componentes: badges de estado unificados ---------- */
.badge-status,
.badge-asistencia,
.status-presente,
.status-tardanza,
.status-falta,
.status-permiso,
.status-pendiente {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1;
    white-space: nowrap;
}

.status-presente { background: var(--status-present-bg); color: var(--status-present-fg); }
.status-tardanza { background: var(--status-late-bg);    color: var(--status-late-fg);    }
.status-falta    { background: var(--status-absent-bg); color: var(--status-absent-fg); }
.status-permiso,
.status-licencia,
.status-vacaciones { background: var(--status-leave-bg);   color: var(--status-leave-fg);   }
.status-pendiente  { background: var(--status-pending-bg); color: var(--status-pending-fg); }

/* ---------- Cards con micro-interacción opcional ---------- */
.card-interactive {
    transition: transform 180ms ease, box-shadow 180ms ease;
    cursor: pointer;
}
.card-interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}
.card-interactive:active {
    transform: translateY(0);
}

/* ---------- Botones: tap target mínimo 44px en mobile ---------- */
@media (max-width: 575.98px) {
    .btn,
    .nav-link,
    .form-control,
    .form-select {
        min-height: 44px;
    }
}

/* ---------- Tablas responsive: stack en mobile ---------- */
@media (max-width: 575.98px) {
    .table-responsive-stack thead { display: none; }
    .table-responsive-stack tr {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        background: var(--surface-0);
        padding: 0.5rem;
    }
    .table-responsive-stack td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem 0.75rem;
        border: none;
        border-bottom: 1px dashed var(--border);
    }
    .table-responsive-stack td:last-child { border-bottom: none; }
    .table-responsive-stack td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-3);
        margin-right: 1rem;
    }
}

/* ---------- Reloj digital: legible en alta densidad ---------- */
.reloj-digital,
.clock-display {
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
}

/* ---------- Skeletons (placeholder mientras carga) ---------- */
@keyframes app-skeleton {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}
.skeleton {
    display: inline-block;
    height: 1em;
    width: 100%;
    border-radius: var(--radius-sm);
    background: linear-gradient(90deg,
        var(--surface-2) 0%, var(--surface-3) 50%, var(--surface-2) 100%);
    background-size: 200px 100%;
    animation: app-skeleton 1.2s ease-in-out infinite;
}

/* ---------- Toast / notificaciones (override Bootstrap) ---------- */
.toast {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-2);
}

/* ---------- Modales: padding seguro en mobile ---------- */
@media (max-width: 575.98px) {
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
    }
    .modal-content {
        border-radius: var(--radius-lg);
    }
    .modal-header {
        padding: 0.75rem 1rem;
    }
    .modal-body {
        padding: 1rem;
    }
}

/* ---------- Login y formularios centrados: vh-fix iOS ---------- */
.form-signin,
.login-form {
    min-height: 100vh;
    min-height: 100dvh;     /* dvh evita el bug del viewport con barras de iOS */
}

/* ---------- Mejorar contraste de inputs en focus ---------- */
.form-control:focus,
.form-select:focus {
    border-color: var(--brand-400);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

/* ---------- Print-friendly de reportes ---------- */
@media print {
    body {
        background: #fff !important;
        color: #000 !important;
    }
    .no-print,
    .navbar,
    .sidebar,
    .bottom-nav,
    .btn,
    .modal,
    .toast-container { display: none !important; }
    .card { box-shadow: none !important; border: 1px solid #ccc; }
    a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; }
}