/**
 * Sistema de Temas - SIPv2
 * Modo Claro/Oscuro con transiciones suaves y accesibilidad WCAG AA
 */

/* ============================================
   VARIABLES DE TEMA - MODO OSCURO (Default)
   ============================================ */

:root {
    /* Fondos - Modo Oscuro (Default SIPv3) */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #111111;
    --bg-card: #0a0a0a;

    /* Texto - SIPv3 */
    --text-primary: #ffffff;
    --text-secondary: #666666;
    --text-tertiary: #444444;
    --text-disabled: #333333;
    --text-bright: #ffffff;

    /* Bordes y líneas */
    --border: #222222;
    --border-light: #111111;
    --border-dark: #333333;

    /* Acentuación SIPv3 (Púrpura) */
    --primary: #9d26b0;
    --primary-dark: #7b1fa2;
    --primary-light: #ce93d8;
    --primary-opacity: rgba(157, 38, 176, 0.1);
    
    --secondary: #ffffff;
    --success: #ffffff;
    --warning: #ffffff;
    --error: #ffffff;
    --info: #ffffff;

    /* Componentes */
    --input-bg: #000000;
    --input-border: #222222;
    --input-border-hover: #9d26b0;
    --input-focus: #9d26b0;
    --input-focus-ring: rgba(157, 38, 176, 0.2);
    
    --card-bg: #0a0a0a;
    --card-shadow: 0 0 0 1px #222222;
    --card-shadow-hover: 0 0 0 1px #9d26b0;

    /* EFECTOS GLASS SIPv3 */
    --glass-bg: rgba(0, 0, 0, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Logo SIP */
    --logo-color: #ffffff;
    --logo-hover: #9d26b0;

    /* Tipografía SIPv3 */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-logo: 'Blanka', sans-serif;

    /* Radios de borde - Material Design 3 */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    /* Elevación - Material Design 3 */
    --shadow-1: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
    --shadow-2: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-3: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-4: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);

    /* Insets y Overlays */
    --bg-inset: rgba(255, 255, 255, 0.03);
    --bg-overlay: rgba(255, 255, 255, 0.05);
}

/* ============================================
   VARIABLES DE TEMA - MODO CLARO
   ============================================ */

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #eeeeee;
    --bg-card: #f8f9fa;

    --text-primary: #000000;
    --text-secondary: #888888;
    --text-tertiary: #aaaaaa;
    --text-disabled: #cccccc;
    --text-bright: #000000;

    --border: #e0e0e0;
    --border-light: #f0f0f0;
    --border-dark: #cccccc;

    --primary: #7b1fa2;
    --primary-dark: #4a148c;
    --primary-light: #ce93d8;
    --primary-opacity: rgba(123, 31, 162, 0.1);

    --secondary: #000000;

    --input-bg: #ffffff;
    --input-border: #e0e0e0;
    --input-border-hover: #7b1fa2;
    --input-focus: #7b1fa2;
    --input-focus-ring: rgba(123, 31, 162, 0.1);

    --card-bg: #f8f9fa;
    --card-shadow: 0 0 0 1px #e0e0e0;
    --card-shadow-hover: 0 0 0 1px #7b1fa2;

    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.1);

    --logo-color: #000000;
    --logo-hover: #7b1fa2;

    /* Insets y Overlays */
    --bg-inset: rgba(0, 0, 0, 0.05);
    --bg-overlay: rgba(0, 0, 0, 0.02);
}

/* ============================================
   APLICACIÓN DE VARIABLES
   ============================================ */

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: var(--font-body);
}

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

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--input-focus);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Inputs y campos de formulario */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="datetime-local"],
input[type="number"],
input[type="search"],
textarea,
select {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: 14px;
    transition: var(--transition-fast);
    font-family: inherit;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="password"]:hover,
input[type="date"]:hover,
input[type="number"]:hover,
input[type="search"]:hover,
textarea:hover,
select:hover {
    border-color: var(--input-border-hover);
}

input:focus,
textarea:focus,
select:focus {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px var(--input-focus-ring);
    outline: none;
}

input:disabled,
textarea:disabled,
select:disabled {
    background-color: var(--bg-tertiary);
    color: var(--text-disabled);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    transition: var(--transition);
    padding: 24px;
}

.card:hover {
    box-shadow: var(--shadow-2);
    border-color: var(--primary-light);
}

/* Navegación */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
    padding: 0 20px;
    box-shadow: var(--card-shadow);
}

.navbar-brand h1 {
    color: var(--primary);
    font-family: var(--font-logo);
    font-size: 1.75rem;
    margin: 0;
    transition: var(--transition-fast);
}

.navbar-brand h1:hover {
    color: var(--primary-dark);
}

.nav-link {
    color: var(--text-secondary);
    transition: var(--transition-fast);
    padding: 8px 12px;
    border-radius: 4px;
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
    background-color: var(--overlay-light);
}

.nav-link:focus {
    outline: 2px solid var(--input-focus);
    outline-offset: 2px;
}

/* Botones */
.btn {
    transition: var(--transition-fast);
    border-radius: var(--radius-xl);
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0.25px;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-align: center;
    font-family: var(--font-body);
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-primary);
    border: 2px solid var(--primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: var(--card-shadow-hover);
}

.btn-primary:active:not(:disabled) {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    border-color: var(--input-border-hover);
}

.btn-secondary:active:not(:disabled) {
    transform: scale(0.98);
}

.btn-link {
    background-color: transparent;
    color: var(--primary);
    border: none;
    padding: 8px 12px;
    text-decoration: underline;
}

.btn-link:hover:not(:disabled) {
    color: var(--primary-dark);
    background-color: var(--overlay-light);
}

.btn-large {
    padding: 14px 28px;
    font-size: 1.1rem;
}

/* Alertas */
.alert {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-left: 4px solid var(--info);
    color: var(--text-primary);
    transition: var(--transition);
    padding: 12px 16px;
    border-radius: 6px;
    margin: 10px 0;
}

.alert-error {
    background-color: var(--bg-secondary);
    border-left-color: var(--error);
    color: var(--text-primary);
    font-weight: 600;
}

.alert-error strong {
    color: var(--text-primary);
    font-weight: 700;
}

.alert-success {
    background-color: var(--bg-secondary);
    border-left-color: var(--success);
    color: var(--text-primary);
}

.alert-success strong {
    color: var(--text-primary);
    font-weight: 700;
}

.alert-warning {
    background-color: var(--bg-secondary);
    border-left-color: var(--warning);
    color: var(--text-primary);
}

.alert-warning strong {
    color: var(--text-primary);
    font-weight: 700;
}

.alert-info {
    background-color: var(--bg-secondary);
    border-left-color: var(--info);
    color: var(--text-primary);
}

.alert-info strong {
    color: var(--info);
    font-weight: 600;
}

/* Tablas */
.table {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-collapse: collapse;
    width: 100%;
    border-radius: 6px;
    overflow: hidden;
}

.table thead {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 600;
}

.table th {
    padding: 12px 16px;
    text-align: left;
    border-color: var(--border);
    border-bottom: 2px solid var(--border);
}

.table td {
    padding: 12px 16px;
    border-color: var(--border);
    border-bottom: 1px solid var(--border);
}

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

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

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

/* Badges */
.badge {
    transition: var(--transition-fast);
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-primary {
    background-color: var(--primary);
    color: var(--bg-primary);
}

.badge-success {
    background-color: var(--success);
    color: var(--bg-primary);
}

.badge-warning {
    background-color: var(--warning);
    color: var(--text-primary);
}

.badge-error {
    background-color: var(--error);
    color: var(--bg-primary);
}

.badge-info {
    background-color: var(--info);
    color: var(--bg-primary);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
    padding: 30px 20px;
    margin-top: 40px;
    text-align: center;
}

.footer a {
    color: var(--primary);
    font-weight: 500;
}

.footer a:hover {
    color: var(--primary-dark);
}

/* Separadores */
hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}

/* Headings con temas */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-bright);
    font-family: var(--font-heading);
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Texto */
p {
    color: var(--text-primary);
    line-height: 1.6;
    margin: 10px 0;
}

small {
    color: var(--text-secondary);
}

code {
    background-color: var(--bg-secondary);
    color: var(--primary);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: "Courier New", monospace;
    font-size: 0.9em;
}

pre {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 6px;
    overflow-x: auto;
    border: 1px solid var(--border);
}

/* Scrollbar personalizado (Chrome) */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
    transition: background-color 0.3s;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--input-border-hover);
}

/* ============================================
   ANIMACIÓN DE TRANSICIÓN Y EFECTOS
   ============================================ */

html {
    scroll-behavior: smooth;
}

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Excluir transiciones en elementos específicos */
.no-transition,
.no-transition * {
    transition: none !important;
}

/* Animación de fade-in */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

/* Animación de slide-in */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-up {
    animation: slideInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   SOPORTE PARA PREFERENCIA DEL SISTEMA
   ============================================ */

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        color-scheme: dark;
    }
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        color-scheme: light;
    }
}

/* ============================================
   MEJORAS DE ACCESIBILIDAD
   ============================================ */

/* Reducir movimiento para usuarios que lo prefieran */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus visible para navegación por teclado */
:focus-visible {
    outline: 2px solid var(--input-focus);
    outline-offset: 2px;
}

/* Mejorar visibilidad de selección de texto */
::selection {
    background-color: var(--primary);
    color: var(--bg-primary);
}

/* ============================================
   COMPONENTES ESPECÍFICOS
   ============================================ */

/* Loading spinner */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    animation: spin 1s linear infinite;
}

/* Tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: var(--text-primary);
    color: var(--bg-primary);
    text-align: center;
    padding: 8px;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.85rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* Modal */
.modal-backdrop {
    background-color: rgba(0, 0, 0, 0.5);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--card-shadow-hover);
    padding: 20px;