/*
 * ============================================================
 *  SALESIANOS BURGOS — Sistema de Diseño Unificado
 *  Versión: 2.0
 *  Descripción: CSS único para todas las páginas del sistema
 *  de gestión de aulas (admin, profesor, login, horarios).
 *
 *  Estructura:
 *    1.  IMPORTS & VARIABLES CSS
 *    2.  RESET & BASE
 *    3.  TYPOGRAPHY
 *    4.  LAYOUT
 *    5.  NAVIGATION (header + nav + submenu)
 *    6.  FORMS
 *    7.  TABLES
 *    8.  BUTTONS
 *    9.  CARDS & CONTAINERS
 *    10. MODALS
 *    11. PAGINATION
 *    12. CALENDAR (horarios)
 *    13. UTILITIES
 *    14. RESPONSIVE (Mobile First)
 * ============================================================
 */


/* =============================================================
   1.  IMPORTS & VARIABLES CSS
   ============================================================= */

/* Inter desde Google Fonts (carga rápida) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* —— Paleta de colores principal —— */
    --color-primary:       #9f0016;   /* Rojo burdeos (marca) */
    --color-primary-dark:  #7a0011;   /* Variante oscura */
    --color-primary-light: #c4001c;   /* Variante clara */
    --color-accent:        #c4001c;   /* Rojo (acciones) */
    --color-accent-hover:  #9f0016;   /* Hover de acciones */
    --color-success:       #10b981;   /* Verde éxito */
    --color-success-hover: #059669;
    --color-danger:        #ef4444;   /* Rojo peligro */
    --color-danger-hover:  #dc2626;
    --color-warning:       #f59e0b;   /* Ámbar advertencia */
    --color-info:          #3b82f6;   /* Azul info */

    /* —— Fondos —— */
    --bg-page:             #f5f0f0;   /* Fondo gris cálido claro */
    --bg-card:             #ffffff;   /* Blanco (tarjetas) */
    --bg-sidebar:          #9f0016;   /* Barra navegación */
    --bg-sidebar-hover:    #c4001c;
    --bg-input:            #f8fafc;
    --bg-input-focus:      #ffffff;
    --bg-table-hover:      #f1f5f9;
    --bg-table-stripe:     #f8fafc;
    --bg-modal-overlay:    rgba(15, 23, 42, 0.6);
    --bg-badge:            #e2e8f0;

    /* —— Texto —— */
    --text-primary:        #0f172a;   /* Casi negro */
    --text-secondary:      #475569;   /* Gris oscuro */
    --text-muted:          #94a3b8;   /* Gris claro */
    --text-on-primary:     #ffffff;   /* Texto sobre fondo oscuro */
    --text-link:           #2563eb;
    --text-link-hover:     #1d4ed8;

    /* —— Bordes —— */
    --border-color:        #e2e8f0;
    --border-radius-sm:    6px;
    --border-radius-md:    8px;
    --border-radius-lg:    12px;
    --border-radius-xl:    16px;

    /* —— Sombras —— */
    --shadow-sm:           0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md:           0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg:           0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl:           0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* —— Espaciado —— */
    --space-xs:            4px;
    --space-sm:            8px;
    --space-md:            16px;
    --space-lg:            24px;
    --space-xl:            32px;
    --space-2xl:           48px;

    /* —— Tipografía —— */
    --font-family:         'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono:           'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --font-size-xs:        0.75rem;   /* 12px */
    --font-size-sm:        0.875rem;  /* 14px */
    --font-size-base:      1rem;      /* 16px */
    --font-size-lg:        1.125rem;  /* 18px */
    --font-size-xl:        1.25rem;   /* 20px */
    --font-size-2xl:       1.5rem;    /* 24px */
    --font-size-3xl:       1.875rem;  /* 30px */

    /* —— Transiciones —— */
    --transition-fast:     150ms ease;
    --transition-base:     250ms ease;
    --transition-slow:     350ms ease;

    /* —— Calendar (horario) —— */
    --cal-cell-size:       44px;
    --cal-bg-available:    #ecfdf5;
    --cal-bg-occupied:     #fef2f2;
    --cal-bg-weekend:      #f1f5f9;
    --cal-bg-today:        #eff6ff;
    --cal-color-available: #065f46;
    --cal-color-occupied:  #991b1b;
}


/* =============================================================
   2.  RESET & BASE
   ============================================================= */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 18px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-page);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--text-link-hover);
}

ul {
    list-style: none;
}


/* =============================================================
   3.  TYPOGRAPHY
   ============================================================= */

h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-size-3xl);
    letter-spacing: -0.025em;
}

h2 {
    font-size: var(--font-size-2xl);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--border-color);
}

.text-muted {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }


/* =============================================================
   4.  LAYOUT
   ============================================================= */

.page-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px;
}

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

/* Tarjetas contenedoras de cada sección */
.section-card {
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    padding: 44px;
    margin-bottom: 36px;
    border: 1px solid var(--border-color);
}

.section-card h2:first-child {
    margin-top: 0;
}

/* Grid de tarjetas */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.flex-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}


/* =============================================================
   5.  NAVIGATION (header + nav + submenu)
   ============================================================= */

header {
    background: var(--bg-sidebar);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    width: 100%;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    min-height: 50px;
}

/* Logo / Título en la barra */
nav h1 {
    color: var(--text-on-primary);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    white-space: nowrap;
    margin: 0;
}

/* Menú principal */
.menu ul {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.menu ul li {
    position: relative;
}

.menu a {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-base);
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 8px;
    transition: all var(--transition-fast);
    display: block;
    cursor: pointer;
    white-space: nowrap;
}

.menu a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

/* Indicador de sección activa — se añade con JS */
.menu a.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
    font-weight: 600;
}

/* Submenú */
.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    z-index: 1001;
    padding: var(--space-xs);
}

.submenu a {
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.submenu a:hover {
    background: var(--bg-table-hover);
    color: var(--color-accent);
}

/* Botón hamburguesa (móvil) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-on-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--space-sm);
}

/* Enlace "Volver" (páginas hijas) */
.menuvolver a {
    background: rgba(255, 255, 255, 0.12);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    font-size: var(--font-size-base);
    padding: 10px 20px;
    border-radius: 8px;
}

.menuvolver a:hover {
    background: rgba(255, 255, 255, 0.22);
}


/* =============================================================
   6.  FORMS
   ============================================================= */

.form-card {
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    padding: 44px;
    max-width: 600px;
    width: 100%;
    border: 1px solid var(--border-color);
}

.form-card-wide {
    max-width: 100%;
}

.form-card h2 {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    appearance: auto;
}

/* Input con icono (login) */
.input-icon-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-input);
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0 14px;
    transition: all var(--transition-fast);
}

.input-icon-group:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-input-focus);
}

.input-icon-group img {
    width: 20px;
    height: 20px;
    opacity: 0.5;
    flex-shrink: 0;
}

.input-icon-group input {
    border: none !important;
    background: transparent !important;
    padding: 10px 0 !important;
    box-shadow: none !important;
    width: 100%;
}

/* Botones dentro de formularios */
.form-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-lg);
}

/* Login centrado */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-lg);
    background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
}

.login-page .form-card {
    max-width: 400px;
}

.login-page h1 {
    text-align: center;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.login-page .subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xl);
}


/* =============================================================
   7.  TABLES
   ============================================================= */

.table-container {
    overflow-x: auto;
    margin-top: var(--space-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

table th {
    background: var(--bg-sidebar);
    color: var(--text-on-primary);
    font-weight: 600;
    padding: 16px 22px;
    text-align: left;
    white-space: nowrap;
    font-size: var(--font-size-base);
}

table th:first-child {
    border-radius: var(--border-radius-sm) 0 0 0;
}

table th:last-child {
    border-radius: 0 var(--border-radius-sm) 0 0;
}

table td {
    padding: 14px 22px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

table tr {
    transition: background var(--transition-fast);
}

table tbody tr:hover {
    background: var(--bg-table-hover);
}

table tbody tr:nth-child(even) {
    background: var(--bg-table-stripe);
}

table tbody tr:nth-child(even):hover {
    background: var(--bg-table-hover);
}

/* Tabla compacta */
.table-compact th,
.table-compact td {
    padding: 8px 12px;
}

/* Acciones en tabla */
table .actions-cell {
    white-space: nowrap;
    text-align: center;
}

/* Checkboxes en tablas más grandes */
table input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    cursor: pointer;
    transform: scale(1.2);
}

/* En pantallas grandes, checkboxes aún más grandes */
@media (min-width: 1600px) {
    table input[type="checkbox"] {
        width: 24px;
        height: 24px;
        transform: scale(1.4);
    }
}


/* =============================================================
   8.  BUTTONS
   ============================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 500;
    font-family: var(--font-family);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.97);
}

/* Variantes */
.btn-primary {
    background: var(--color-accent);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: #ffffff;
}

.btn-success {
    background: var(--color-success);
    color: #ffffff;
}

.btn-success:hover {
    background: var(--color-success-hover);
    color: #ffffff;
}

.btn-danger {
    background: var(--color-danger);
    color: #ffffff;
}

.btn-danger:hover {
    background: var(--color-danger-hover);
    color: #ffffff;
}

.btn-warning {
    background: var(--color-warning);
    color: #ffffff;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1.5px solid var(--border-color);
}

.btn-ghost:hover {
    background: var(--bg-table-hover);
    border-color: var(--text-muted);
}

.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 14px 28px;
    font-size: var(--font-size-base);
}

.btn-icon {
    padding: 8px;
    border-radius: var(--border-radius-sm);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg-table-hover);
    border-color: var(--border-color);
}

.btn-icon img {
    width: 22px;
    height: 22px;
}

/* Botón horrorario (icono de reloj en tabla) */
.btn-horario {
    padding: 10px 16px;
    background: var(--color-primary);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-horario:hover {
    background: var(--color-primary-light);
}

.btn-horario img {
    width: 18px;
    height: 18px;
}

/* Badge de tipo más grande */
table .badge {
    font-size: 0.95rem;
    padding: 4px 14px;
}

@media (min-width: 1600px) {
    .btn-horario {
        padding: 12px 20px;
        font-size: 1.1rem;
    }
    table .badge {
        font-size: 1.05rem;
        padding: 6px 16px;
    }
}

/* Botón "Guardar mes" del calendario */
.btn-save-month {
    display: block;
    margin: var(--space-lg) auto;
    padding: 12px 36px;
    font-size: var(--font-size-base);
    font-weight: 600;
    background: var(--color-success);
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.btn-save-month:hover {
    background: var(--color-success-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}


/* =============================================================
   9.  CARDS & CONTAINERS
   ============================================================= */

.card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: var(--space-lg);
    transition: box-shadow var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    /* padding heredado de .card */
}

/* Mensajes de alerta / feedback */
.alert {
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.alert-success {
    background: #ecfdf5;
    color: var(--cal-color-available);
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fef2f2;
    color: var(--cal-color-occupied);
    border: 1px solid #fecaca;
}

.alert-info {
    background: #eff6ff;
    color: var(--color-accent);
    border: 1px solid #bfdbfe;
}


/* =============================================================
   10.  MODALS
   ============================================================= */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-modal-overlay);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    padding: 40px;
    max-width: 560px;
    width: 90%;
    position: relative;
    animation: slideUp 0.25s ease;
}

.modal-content h2 {
    margin-bottom: var(--space-md);
}

.modal-text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

.close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-size: var(--font-size-xl);
    color: var(--text-muted);
    cursor: pointer;
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.close:hover {
    background: var(--bg-table-hover);
    color: var(--text-primary);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}


/* =============================================================
   11.  PAGINATION
   ============================================================= */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-lg);
    list-style: none;
    padding: 0;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.pagination a:hover {
    background: var(--bg-table-hover);
    border-color: var(--text-muted);
}

.pagination .active {
    background: var(--color-accent);
    color: #ffffff;
    border-color: var(--color-accent);
}

.pagination .disabled {
    opacity: 0.5;
    pointer-events: none;
}


/* =============================================================
   12.  CALENDAR (horarios)
   ============================================================= */

.calendar-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    background: var(--bg-sidebar);
    color: var(--text-on-primary);
}

.calendar-header h2 {
    margin: 0;
    color: var(--text-on-primary);
    font-size: var(--font-size-xl);
}

.calendar-nav {
    display: flex;
    gap: var(--space-sm);
}

.calendar-nav a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-on-primary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: background var(--transition-fast);
    text-decoration: none;
}

.calendar-nav a:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-on-primary);
}

.calendar-nav img {
    width: 16px;
    height: 16px;
    filter: brightness(10);
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
}

.calendar-table th {
    background: #f8fafc;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 10px 8px;
    border-bottom: 2px solid var(--border-color);
    text-align: center;
}

.calendar-table td {
    border: 1px solid var(--border-color);
    padding: 4px;
    vertical-align: top;
    text-align: center;
    min-width: 100px;
    height: auto;
}

/* Celda de día */
.calendar-day {
    padding: var(--space-sm);
    min-height: var(--cal-cell-size);
    font-size: var(--font-size-xs);
}

.calendar-day .day-number {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    display: block;
}

.calendar-day .day-name {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    display: block;
    margin-bottom: var(--space-xs);
}

/* Fines de semana */
.calendar-day.weekend {
    background: var(--cal-bg-weekend);
}

.calendar-day.weekend .day-number {
    color: var(--text-muted);
}

/* Checkbox de hora en calendario */
.hour-check {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px 6px;
    margin: 2px 0;
    border-radius: 4px;
    font-size: 11px;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.hour-check:hover {
    background: #f1f5f9;
}

.hour-check input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--color-accent);
    cursor: pointer;
    flex-shrink: 0;
}

.hour-check .hour-label {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 500;
}

.hour-check.checked {
    background: var(--cal-bg-available);
}

/* Fila "Seleccionar todo" */
.select-all-row {
    background: #f8fafc !important;
    border-bottom: 2px solid var(--border-color) !important;
}

.select-all-row td {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.select-all-row input[type="checkbox"] {
    accent-color: var(--color-accent);
}

/* Checkbox por hora (fila) y por día (columna) */
.cbhorahora, .cbdia, .seleccionartodo {
    accent-color: var(--color-accent);
}


/* =============================================================
   13.  UTILITIES
   ============================================================= */

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-sm); }
.mt-4 { margin-top: var(--space-md); }
.mt-6 { margin-top: var(--space-lg); }
.mt-8 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-4 { margin-bottom: var(--space-md); }
.mb-6 { margin-bottom: var(--space-lg); }

.p-4 { padding: var(--space-md); }
.p-6 { padding: var(--space-lg); }

/* Badges / etiquetas */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 9999px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    background: var(--bg-badge);
    color: var(--text-secondary);
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Ocultar/mostrar con display */
.d-none { display: none; }
.d-block { display: block; }

/* Separador */
hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--space-lg) 0;
}

/* Icono pequeño en línea */
.icon-inline {
    display: inline-block;
    width: 18px;
    height: 18px;
    vertical-align: middle;
}


/* =============================================================
   14.  RESPONSIVE (Mobile First)
   ============================================================= */

/* Tablets y móviles grandes */
@media (max-width: 1024px) {
    .page-wrapper {
        padding: 20px;
    }

    .section-card {
        padding: 24px;
    }
}

/* Pantallas grandes - todo más grande */
@media (min-width: 1600px) {
    .page-wrapper {
        max-width: 1800px;
        padding: 60px;
    }

    .section-card {
        padding: 60px;
        margin-bottom: 44px;
        border-radius: 20px;
    }

    .form-card {
        padding: 60px;
        max-width: 760px;
    }

    .modal-content {
        padding: 52px;
        max-width: 680px;
    }

    table th {
        padding: 20px 30px;
        font-size: 1.15rem;
    }

    table td {
        padding: 18px 30px;
        font-size: 1.05rem;
    }

    .btn {
        padding: 16px 32px;
        font-size: 1.1rem;
        border-radius: 10px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 16px 20px;
        font-size: 1.1rem;
    }

    .menu a {
        font-size: 1.1rem;
        padding: 14px 22px;
    }

    nav h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .page-title {
        font-size: 2.5rem;
    }
}

/* Tablets y móviles */
@media (max-width: 768px) {
    /* Navegación */
    .nav-toggle {
        display: block;
    }

    nav {
        flex-wrap: wrap;
        padding: var(--space-sm) var(--space-md);
    }

    .menu {
        display: none;
        width: 100%;
        order: 3;
    }

    .menu.open {
        display: block;
    }

    .menu ul {
        flex-direction: column;
        width: 100%;
        padding: var(--space-sm) 0;
    }

    .menu ul li {
        width: 100%;
    }

    .menu a {
        padding: var(--space-sm) var(--space-md);
    }

    .submenu {
        position: static;
        box-shadow: none;
        border: none;
        background: rgba(255, 255, 255, 0.05);
        margin-left: var(--space-md);
    }

    .submenu a {
        color: rgba(255, 255, 255, 0.8);
    }

    /* Tarjetas */
    .section-card {
        padding: var(--space-md);
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    /* Formularios */
    .form-card {
        padding: var(--space-lg);
    }

    /* Login */
    .login-page {
        padding: var(--space-md);
    }

    /* Tablas: scroll horizontal en móvil */
    .table-container {
        margin: 0 calc(-1 * var(--space-md));
    }

    table {
        font-size: var(--font-size-xs);
    }

    table th,
    table td {
        padding: 8px 10px;
    }

    /* Botones */
    .btn {
        padding: 8px 16px;
        font-size: var(--font-size-xs);
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    /* Modal */
    .modal-content {
        padding: var(--space-lg);
        width: 95%;
    }

    /* Calendar */
    .calendar-table {
        font-size: var(--font-size-xs);
    }

    .calendar-table th,
    .calendar-table td {
        padding: 4px;
        min-width: 60px;
    }

    .calendar-header {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    .calendar-header h2 {
        font-size: var(--font-size-lg);
    }

    .hour-check {
        font-size: 10px;
        padding: 2px 4px;
    }

    .hour-check .hour-label {
        font-size: 10px;
    }

    /* Paginación */
    .pagination {
        flex-wrap: wrap;
    }
}

/* Móviles pequeños */
@media (max-width: 480px) {
    h1 { font-size: var(--font-size-xl); }
    h2 { font-size: var(--font-size-lg); }

    .page-title {
        font-size: var(--font-size-2xl);
    }

    .calendar-table td {
        min-width: 50px;
        padding: 2px;
    }

    .calendar-day {
        padding: 2px;
    }

    .hour-check {
        padding: 1px 2px;
    }
}

/* ═══════════════════════════════════════════
   RESPONSIVE GLOBAL (mobile-first additions)
   ═══════════════════════════════════════════ */

/* Tablets (≤1024px) */
@media (max-width: 1024px) {
    nav { padding: 0 12px; min-height: 44px; }
    nav h1 { font-size: 1rem; }
    .menu a { padding: 8px 12px; font-size: .8rem; }
    .main, .page-wrapper { padding: 12px; }
    table { font-size: .78rem; }
    table th, table td { padding: 6px 8px; }
}

/* Móviles (≤768px) */
@media (max-width: 768px) {
    nav { flex-wrap: wrap; padding: 8px 10px; min-height: auto; gap: 4px; }
    nav h1 { font-size: .9rem; }
    .menu ul { flex-wrap: wrap; gap: 2px; }
    .menu a { padding: 6px 10px; font-size: .75rem; border-radius: 4px; }
    .main, .page-wrapper { padding: 8px; }
    .card, .section-card { padding: 14px; }
    .row { flex-direction: column; }
    .field { min-width: 100% !important; }
    table { font-size: .72rem; }
    table th, table td { padding: 4px 6px; }
    .btn { padding: 6px 12px; font-size: .72rem; }
    .cal-wrap { max-width: 100%; }
}

/* Pequeños (≤480px) */
@media (max-width: 480px) {
    nav h1 { font-size: .8rem; }
    .menu a { padding: 5px 8px; font-size: .7rem; }
    table { font-size: .65rem; }
    .btn { padding: 5px 10px; font-size: .68rem; }
    h2 { font-size: .9rem; }
}