/**
 * Estilos personalizados - Sistema de Enlaces
 * Versión: 3.0
 * Inspirado en diseño profesional y clean
 */

/* ============================================
   VARIABLES CSS FIJAS
   ============================================ */
:root {
    /* Colores de la marca (no cambian con el tema) 
       PALETA COHERENTE:
       - Azul (#42648e): Color principal del sistema - Botón primary
       - Verde (#1c7484): Color de éxito - Botón success
       - Púrpura (#894fa0): Color alternativo - Botón alternative + Iconos de inputs
       - Dorado (#e8b622): Iconos genéricos (navbar, logos, destacados)
       - Amarillo (#ffc107): Color de advertencia - Botón warning
       - Azul Turquesa (#0084a5): Navbar y Footer
    */

    /* Colores de botones - Base */
    --color-primary: #42648e;
    --color-success: #1c7484;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    --color-info: #17a2b8;
    --color-alternative: #894fa0;
    --color-secondary: #6c757d;
    --color-dark: #343a40;
    --color-light: #f8f9fa;

    /* Colores de botones - Estados Hover */
    --color-primary-hover: #355278;
    --color-success-hover: #155e6a;
    --color-danger-hover: #c82333;
    --color-warning-hover: #e0a800;
    --color-info-hover: #138496;
    --color-alternative-hover: #7a3f8f;
    --color-secondary-hover: #5a6268;
    --color-dark-hover: #23272b;
    --color-light-hover: #e2e6ea;

    /* Colores de botones - Estados Active */
    --color-primary-active: #2d4563;
    --color-success-active: #125159;
    --color-danger-active: #bd2130;
    --color-warning-active: #d39e00;
    --color-info-active: #117a8b;
    --color-alternative-active: #6d3880;
    --color-secondary-active: #545b62;
    --color-dark-active: #1d2124;
    --color-light-active: #dae0e5;

    /* Colores de botones - Sombras (para efectos hover) */
    --shadow-primary: rgba(66, 100, 142, 0.4);
    --shadow-success: rgba(28, 116, 132, 0.4);
    --shadow-danger: rgba(220, 53, 69, 0.4);
    --shadow-warning: rgba(255, 193, 7, 0.4);
    --shadow-info: rgba(23, 162, 184, 0.4);
    --shadow-alternative: rgba(137, 79, 160, 0.4);
    --shadow-secondary: rgba(108, 117, 125, 0.4);
    --shadow-dark: rgba(52, 58, 64, 0.4);
    --shadow-light: rgba(248, 249, 250, 0.4);

    /* Colores de botones - Focus (box-shadow) */
    --focus-primary: rgba(66, 100, 142, 0.25);
    --focus-success: rgba(28, 116, 132, 0.25);
    --focus-danger: rgba(220, 53, 69, 0.25);
    --focus-warning: rgba(255, 193, 7, 0.25);
    --focus-info: rgba(23, 162, 184, 0.25);
    --focus-alternative: rgba(137, 79, 160, 0.25);
    --focus-secondary: rgba(108, 117, 125, 0.25);
    --focus-dark: rgba(52, 58, 64, 0.25);
    --focus-light: rgba(248, 249, 250, 0.5);

    /* Estado disabled (opacidad) */
    --btn-disabled-opacity: 0.65;
    --btn-disabled-cursor: not-allowed;

    /* Transiciones */
    --transition: all 0.3s ease;
}

/* NOTA: Variables de tema (bg-body, text-primary, etc.) 
   están definidas en themes.css */

/* ============================================
   ESTILOS GLOBALES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    color: var(--color-action-hover);
    text-decoration: none;
}

/* Enlaces secundarios (adaptan al tema) */
a.text-muted,
a.link-secondary {
    color: var(--text-secondary) !important;
}

a.text-muted:hover,
a.link-secondary:hover {
    color: var(--color-action-primary) !important;
}

/* Textos secundarios que se adaptan al tema */
.text-theme-secondary {
    color: var(--text-secondary);
}

.text-theme-muted {
    color: var(--text-muted);
}

/* Bootstrap text utilities adaptadas al tema */
.text-secondary {
    color: var(--text-secondary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-primary {
    color: var(--text-primary) !important;
}

/* Bootstrap background utilities adaptadas al tema */
.bg-light {
    background-color: var(--bg-card) !important;
}

.bg-dark {
    background-color: var(--bg-body) !important;
}

/* Bootstrap border utilities adaptadas al tema */
.border {
    border-color: var(--border-color) !important;
}

.border-top,
.border-bottom,
.border-start,
.border-end {
    border-color: var(--border-color) !important;
}

/* ============================================
   HEADER Y FOOTER
   ============================================ */
.app-header {
    background: var(--navbar-bg);
    color: var(--navbar-text);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-header .navbar-brand,
.app-header .nav-link {
    color: var(--navbar-text) !important;
}

.app-header .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
}

.app-header .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-weight: 500;
}

.app-footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 2rem 0;
    margin-top: auto;
}

/* ============================================
   TARJETAS
   ============================================ */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    background: var(--color-action-primary);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px 8px 0 0;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* ============================================
   BOTONES
   ============================================ */
/* Los estilos de botones están en buttons.css */

/* ============================================
   FORMULARIOS
   ============================================ */
.form-control {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 0.2rem rgba(0, 132, 165, 0.25);
    background-color: var(--input-bg);
    color: var(--text-primary);
}

.form-control:disabled {
    background-color: var(--input-disabled-bg);
    opacity: 0.6;
}

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

/* Checkbox personalizado */
.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--input-border);
    background-color: var(--input-bg);
    cursor: pointer;
    transition: var(--transition);
}

.form-check-input:checked {
    background-color: var(--color-action-primary);
    border-color: var(--color-action-primary);
}

.form-check-input:focus {
    border-color: var(--color-action-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 132, 165, 0.25);
}

.form-check-label {
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    margin-left: 0.5rem;
}

/* Estados de validación */
.form-control.is-invalid {
    border-color: var(--color-danger);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.5rem) center;
    background-size: calc(0.75em + 0.5rem) calc(0.75em + 0.5rem);
    padding-right: calc(3.5rem);
}

.form-control.is-valid {
    border-color: var(--color-success);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.5rem) center;
    background-size: calc(0.75em + 0.5rem) calc(0.75em + 0.5rem);
    padding-right: calc(3.5rem);
}

.invalid-feedback {
    display: block;
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.valid-feedback {
    display: block;
    color: var(--color-success);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ============================================
   ALERTAS
   ============================================ */
.alert {
    border-radius: 8px;
    border-left: 4px solid;
}

.alert-success {
    border-left-color: var(--color-success);
}

.alert-danger {
    border-left-color: var(--color-danger);
}

.alert-warning {
    border-left-color: var(--color-warning);
}

/* ============================================
   TABLAS
   ============================================ */
.table {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.table thead th {
    background-color: var(--color-action-primary);
    color: white;
    border: none;
}

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

/* ============================================
   NAVEGACIÓN
   ============================================ */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar-brand i {
    color: var(--icon-highlight);
}

.nav-link {
    color: white !important;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--icon-highlight) !important;
    transform: translateY(-2px);
}

/* ============================================
   TEMA SWITCHER
   ============================================ */
.theme-toggle {
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   UTILIDADES
   ============================================ */
.gradient-bg {
    background: linear-gradient(135deg, var(--color-alternative) 0%, var(--color-icon) 100%);
}

.text-icon {
    color: var(--icon-highlight);
}

.shadow-custom {
    box-shadow: var(--shadow);
}

/* ============================================
   LOGIN PAGE - Diseño Clean y Profesional
   ============================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    position: relative;
    overflow: hidden;
}

/* Lado izquierdo - Branding - ÚNICO LUGAR CON GRADIENTE */
.login-brand-side {
    flex: 1;
    background: linear-gradient(135deg, var(--color-alternative) 0%, var(--color-header-footer) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    color: white;
    position: relative;
}

.login-brand-side::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.brand-logo {
    font-size: 4rem;
    color: var(--icon-highlight);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.brand-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.brand-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 400px;
    text-align: center;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.brand-features {
    margin-top: 3rem;
    position: relative;
    z-index: 1;
}

.brand-feature {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.brand-feature i {
    color: var(--icon-highlight);
    margin-right: 1rem;
    font-size: 1.5rem;
}

/* Lado derecho - Formulario */
.login-form-side {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    background: var(--bg-body);
}

.login-form-container {
    width: 100%;
    max-width: 450px;
    position: relative;
    /* Para posicionar el botón de tema */
}

.login-form-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

/* Logo móvil (solo en pantallas pequeñas) */
.brand-logo-mobile {
    font-size: 3rem;
    color: var(--icon-highlight);
}

.login-form-header h2 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.login-form-header p {
    color: var(--text-secondary);
}

/* Selector de idioma con banderas */
.language-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.language-flag {
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.6;
    text-decoration: none;
    display: inline-block;
}

.language-flag:hover {
    opacity: 1;
    transform: scale(1.2);
}

.language-flag.active {
    opacity: 1;
    transform: scale(1.15);
    filter: drop-shadow(0 2px 4px rgba(0, 132, 165, 0.4));
}

.language-separator {
    color: var(--text-secondary);
    font-size: 1.5rem;
    opacity: 0.3;
    user-select: none;
}

/* Selector de tema en login (esquina superior derecha) */
.theme-toggle-login-wrapper {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 10;
}

.theme-toggle-login {
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.7;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    background-color: transparent;
}

.theme-toggle-login:hover {
    opacity: 1;
    transform: scale(1.15) rotate(20deg);
    background-color: var(--hover-bg);
    box-shadow: 0 4px 12px rgba(0, 132, 165, 0.3);
}

.theme-toggle-login i {
    transition: transform 0.3s ease;
}

/* Ajustar posición en móviles */
@media (max-width: 576px) {
    .theme-toggle-login-wrapper {
        top: 1rem;
        right: 1rem;
    }

    .theme-toggle-login {
        font-size: 1.3rem;
        width: 2.5rem;
        height: 2.5rem;
        padding: 0.5rem;
    }
}

.login-form-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.form-floating-icon {
    position: relative;
}

.form-floating-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--input-icon-color);
    z-index: 10;
    transition: var(--transition);
}

.form-floating-icon .form-control {
    padding-left: 3rem;
}

/* Password toggle icon */
.password-toggle-wrapper {
    position: relative;
}

.password-toggle-icon {
    position: absolute;
    right: 1rem !important;
    left: auto !important;
    top: 50%;
    transform: translateY(-50%);
    color: var(--input-icon-color);
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    font-size: 1.1rem;
    opacity: 0.8;
}

.password-toggle-icon:hover {
    color: var(--input-icon-color);
    opacity: 1;
}

/* Ocultar icono de ojo cuando hay error Y el campo está vacío */
.password-toggle-wrapper .form-control.is-invalid:invalid~.password-toggle-icon,
.password-toggle-wrapper .form-control.is-invalid[value=""]~.password-toggle-icon {
    display: none;
}

/* Ajustar padding cuando hay icono de validación */
.password-toggle-wrapper .form-control.is-invalid {
    padding-right: calc(3.5rem) !important;
}

.password-toggle-wrapper .form-control {
    padding-right: 3rem;
}

/* Botón de login ahora está en buttons.css */

.login-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 991px) {
    .login-page {
        flex-direction: column;
    }

    .login-brand-side {
        padding: 2rem;
        min-height: auto;
    }

    .brand-title {
        font-size: 1.8rem;
    }

    .brand-features {
        display: none;
    }

    .login-form-side {
        padding: 2rem 1rem;
    }

    .login-form-card {
        padding: 2rem 1.5rem;
    }
}

/* ============================================
   ERROR PAGE - Diseño similar al Login
   ============================================ */
.error-page {
    min-height: 100vh;
    display: flex;
    position: relative;
    overflow: hidden;
}

/* Lado izquierdo - Visual del error */
.error-brand-side {
    flex: 1;
    background: linear-gradient(135deg, var(--color-alternative) 0%, var(--color-header-footer) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    color: white;
    position: relative;
}

.error-brand-side::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.error-icon {
    font-size: 5rem;
    color: var(--icon-highlight);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
    animation: errorPulse 2s ease-in-out infinite;
}

@keyframes errorPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.error-code-display {
    font-size: 8rem;
    font-weight: 900;
    color: var(--icon-highlight);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
    line-height: 1;
    margin-bottom: 1rem;
}

.error-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.error-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 500px;
    text-align: center;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* Lado derecho - Acciones */
.error-content-side {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    background: var(--bg-body);
}

.error-actions {
    width: 100%;
    max-width: 450px;
}

.error-suggestions {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.error-suggestions h4 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.suggestion-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--bg-hover);
    border-radius: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.suggestion-item:last-child {
    margin-bottom: 0;
}

.suggestion-item:hover {
    background: var(--hover-bg);
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
    border-color: var(--color-action-primary);
}

.suggestion-item i {
    font-size: 1.5rem;
    color: var(--icon-highlight);
    margin-right: 1rem;
    min-width: 2rem;
    text-align: center;
}

.suggestion-item .suggestion-text h6 {
    margin: 0 0 0.25rem 0;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.suggestion-item .suggestion-text small {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.btn-back-home {
    background: linear-gradient(135deg, var(--color-alternative) 0%, var(--color-action-primary) 100%);
    border: none;
    color: white;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 132, 165, 0.3);
}

.btn-back-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 132, 165, 0.4);
    color: white;
}

/* Responsive - Error page */
@media (max-width: 991px) {
    .error-page {
        flex-direction: column;
    }
    
    .error-brand-side {
        padding: 2rem;
        min-height: auto;
    }
    
    .error-code-display {
        font-size: 5rem;
    }
    
    .error-title {
        font-size: 1.8rem;
    }
    
    .error-content-side {
        padding: 2rem 1rem;
    }
}

/* ============================================
   NOTA: Animaciones y componentes movidos a archivos separados
   ============================================ */
/* animations.css - Todas las animaciones y efectos */
/* components.css - Componentes reutilizables (info-box, small-box, etc.) */