/* ============================================================================
   app.css — Sistema de diseño de Sala de Emergencia Sismo
   ============================================================================
   HTML5 + CSS propio. Sin frameworks. Sin dependencias externas.
   Diseñado específicamente para un sistema MVC en PHP 8.1.
   ========================================================================== */

/* ========================================================================
   1. VARIABLES CSS
   ======================================================================== */
:root {
    /* ---- Paleta principal ---- */
    --color-primary:       #1a1a2e;
    --color-primary-light: #16213e;
    --color-accent:        #0f3460;
    --color-accent-light:  #e94560;

    /* ---- Semántica ---- */
    --color-success: #27ae60;
    --color-warning: #f39c12;
    --color-danger:  #e74c3c;
    --color-info:    #3498db;

    /* ---- Neutros ---- */
    --color-bg:         #f0f2f5;
    --color-surface:    #ffffff;
    --color-border:     #e1e4e8;
    --color-text:       #1c1e21;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;

    /* ---- Sidebar ---- */
    --sidebar-width: 260px;
    --sidebar-bg:    var(--color-primary);
    --sidebar-text:  #c8d6e5;
    --sidebar-hover: rgba(255, 255, 255, 0.08);
    --sidebar-active-bg: var(--color-accent);
    --sidebar-active-text: #ffffff;

    /* ---- Header ---- */
    --header-height: 60px;
    --header-bg:     var(--color-surface);
    --header-border: var(--color-border);

    /* ---- Tipografía ---- */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                   Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans",
                   "Helvetica Neue", Arial, sans-serif;
    --font-mono:   "SFMono-Regular", Consolas, "Liberation Mono", Menlo,
                   "Courier New", monospace;
    --font-size-xs:   0.75rem;   /* 12px */
    --font-size-sm:   0.8125rem; /* 13px */
    --font-size-base: 0.875rem;  /* 14px */
    --font-size-lg:   1rem;      /* 16px */
    --font-size-xl:   1.25rem;   /* 20px */
    --font-size-2xl:  1.5rem;    /* 24px */
    --font-size-3xl:  2rem;      /* 32px */

    /* ---- Espaciado ---- */
    --spacing-xs: 0.25rem;  /*  4px */
    --spacing-sm: 0.5rem;   /*  8px */
    --spacing-md: 1rem;     /* 16px */
    --spacing-lg: 1.5rem;   /* 24px */
    --spacing-xl: 2rem;     /* 32px */
    --spacing-2xl: 3rem;    /* 48px */

    /* ---- Bordes ---- */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* ---- Sombras ---- */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

    /* ---- Transiciones ---- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ========================================================================
   2. RESET / NORMALIZACIÓN
   ======================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg {
    display: block;
    max-width: 100%;
}

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

a:hover {
    text-decoration: underline;
}

ul, ol {
    list-style: none;
}

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

button {
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================================================
   3. LAYOUT — PÁGINA DE AUTENTICACIÓN
   ======================================================================== */
.page-auth {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-accent) 100%);
    padding: var(--spacing-md);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-brand {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-brand__icon {
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.auth-brand__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.auth-brand__subtitle {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.auth-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

/* ========================================================================
   4. LAYOUT — PÁGINA AUTENTICADA (APP)
   ======================================================================== */
.page-app {
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.sidebar__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: #ffffff;
    text-decoration: none;
}

.sidebar__brand:hover {
    text-decoration: none;
    opacity: 0.9;
}

.sidebar__brand-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.sidebar__brand-text {
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.2;
}

.sidebar__toggle {
    display: none;
    color: var(--sidebar-text);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.sidebar__toggle:hover {
    background: var(--sidebar-hover);
}

.sidebar__nav {
    flex: 1;
    padding: var(--spacing-sm) 0;
    overflow-y: auto;
}

.sidebar__menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar__menu-item {
    padding: 0 var(--spacing-sm);
}

.sidebar__menu-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--sidebar-text);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.sidebar__menu-link:hover {
    background: var(--sidebar-hover);
    color: #ffffff;
    text-decoration: none;
}

.sidebar__menu-link--active {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-active-text);
    font-weight: 600;
}

.sidebar__menu-link--active:hover {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-active-text);
}

.sidebar__menu-link svg {
    flex-shrink: 0;
}

.sidebar__footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    flex-shrink: 0;
}

.sidebar__version {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

/* ---- Overlay (móvil) ---- */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

/* ---- App wrapper ---- */
.app-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---- Header ---- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--spacing-lg);
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    position: sticky;
    top: 0;
    z-index: 100;
    flex-shrink: 0;
}

.app-header__left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.app-header__hamburger {
    display: none;
    color: var(--color-text);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.app-header__hamburger:hover {
    background: var(--color-bg);
}

.app-header__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.app-header__right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ---- User badge ---- */
.user-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-badge__avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-accent-light);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.user-badge__info {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.user-badge__name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.user-badge__role {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ---- Content ---- */
.app-content {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 100%;
}

/* ---- Footer ---- */
.app-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

.app-footer__separator {
    margin: 0 var(--spacing-sm);
}

/* ========================================================================
   5. COMPONENTES — FLASH MESSAGES
   ======================================================================== */
.flash {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    animation: flash-in var(--transition-base) ease-out;
}

@keyframes flash-in {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.flash--success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.flash--danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.flash--warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.flash--info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.flash__icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.flash__text {
    flex: 1;
}

.flash__close {
    font-size: var(--font-size-xl);
    line-height: 1;
    color: inherit;
    opacity: 0.5;
    padding: 0 var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: opacity var(--transition-fast);
}

.flash__close:hover {
    opacity: 1;
}

/* ========================================================================
   6. COMPONENTES — FORMULARIOS
   ======================================================================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.75rem;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-info);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
}

.form-input--error {
    border-color: var(--color-danger);
}

.form-input--error:focus {
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.25rem;
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: var(--spacing-xs);
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.form-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.form-inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-info);
}

/* ========================================================================
   7. COMPONENTES — BOTONES
   ======================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.4;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-info);
    outline-offset: 2px;
}

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

.btn--primary:hover {
    background: #2980b9;
    border-color: #2980b9;
}

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

.btn--success:hover {
    background: #219a52;
    border-color: #219a52;
}

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

.btn--danger:hover {
    background: #c0392b;
    border-color: #c0392b;
}

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

.btn--warning:hover {
    background: #d68910;
    border-color: #d68910;
}

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

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

/* ---- Tamaños ---- */
.btn--sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-xs);
}

.btn--lg {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
}

.btn--block {
    width: 100%;
}

/* ---- Especial: botón de logout ---- */
.btn--logout {
    gap: var(--spacing-xs);
}

/* ========================================================================
   8. COMPONENTES — TABLAS
   ======================================================================== */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

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

.table th {
    background: var(--color-bg);
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.04em;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.table tbody tr:hover {
    background: rgba(52, 152, 219, 0.04);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ---- Tabla compacta ---- */
.table--compact th,
.table--compact td {
    padding: var(--spacing-xs) var(--spacing-sm);
}

/* ---- Badges dentro de tablas ---- */
.table .badge {
    font-size: var(--font-size-xs);
}

/* ========================================================================
   9. COMPONENTES — CARDS
   ======================================================================== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.card__header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.card__body {
    padding: var(--spacing-lg);
}

.card__footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ---- Grid de cards (dashboard) ---- */
.card-grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.card-grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.card-grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ---- Stat card ---- */
.stat-card {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.stat-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.5rem;
}

.stat-card__icon--blue  { background: #dbeafe; color: #2563eb; }
.stat-card__icon--green { background: #d1fae5; color: #059669; }
.stat-card__icon--red   { background: #fee2e2; color: #dc2626; }
.stat-card__icon--amber { background: #fef3c7; color: #d97706; }

.stat-card__value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

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

/* ========================================================================
   10. COMPONENTES — BADGES
   ======================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
    line-height: 1.6;
}

.badge--success { background: #d4edda; color: #155724; }
.badge--danger  { background: #f8d7da; color: #721c24; }
.badge--warning { background: #fff3cd; color: #856404; }
.badge--info    { background: #d1ecf1; color: #0c5460; }
.badge--neutral { background: #e9ecef; color: #495057; }

/* ========================================================================
   11. COMPONENTES — PAGINACIÓN
   ======================================================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-lg);
}

.pagination__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.pagination__link:hover {
    background: var(--color-bg);
    text-decoration: none;
}

.pagination__link--active {
    background: var(--color-info);
    color: #ffffff;
    border-color: var(--color-info);
}

.pagination__link--active:hover {
    background: #2980b9;
}

.pagination__link--disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* ========================================================================
   12. UTILIDADES
   ======================================================================== */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }

.text-muted { color: var(--color-text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-info { color: var(--color-info); }

.font-mono { font-family: var(--font-mono); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

.d-flex    { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-grid    { display: grid; }
.d-block   { display: block; }
.d-none    { display: none; }

.flex-wrap { flex-wrap: wrap; }
.flex-1    { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }

.w-full { width: 100%; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ========================================================================
   13. EMPTY STATE
   ======================================================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--color-text-muted);
}

.empty-state__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.4;
}

.empty-state__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.empty-state__text {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

/* ========================================================================
   14. RESPONSIVE — 320px en adelante
   ======================================================================== */

/* ---- Tablets y móviles grandes (< 992px) ---- */
@media (max-width: 991.98px) {
    .card-grid--2,
    .card-grid--3,
    .card-grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ---- Móviles (< 768px) ---- */
@media (max-width: 767.98px) {
    /* Sidebar oculto por defecto, se abre con clase .sidebar--open */
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar--open {
        transform: translateX(0);
    }

    .sidebar__toggle {
        display: flex;
    }

    .sidebar-overlay--visible {
        display: block;
    }

    .app-wrapper {
        margin-left: 0;
    }

    .app-header__hamburger {
        display: flex;
    }

    .app-header__title {
        font-size: var(--font-size-base);
    }

    .app-content {
        padding: var(--spacing-md);
    }

    .user-badge__info {
        display: none;
    }

    .btn__label--mobile-hidden {
        display: none;
    }

    .card-grid--2,
    .card-grid--3,
    .card-grid--4 {
        grid-template-columns: 1fr;
    }

    .form-inline {
        flex-direction: column;
        align-items: stretch;
    }

    .table th,
    .table td {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

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

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

/* ---- Móviles muy pequeños (< 480px) ---- */
@media (max-width: 479.98px) {
    .auth-card {
        padding: var(--spacing-md);
    }

    .auth-brand__title {
        font-size: var(--font-size-lg);
    }

    .app-header {
        padding: 0 var(--spacing-sm);
    }

    .app-content {
        padding: var(--spacing-sm);
    }
}