/**
 * Estilos principales - Web Educativa Logística
 * Paleta oficial UPV: Verde #009639, Azul marino #00345A, Rojo #AB2A3E, Gris #F2F2F2
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Colores UPV - Identidad Corporativa Oficial */
    --color-primary: #00345A;        /* Azul marino UPV */
    --color-primary-light: #004b7a;  /* Azul marino UPV claro */
    --color-primary-dark: #001f35;   /* Azul marino UPV oscuro */
    --color-secondary: #009639;      /* Verde UPV */
    --color-secondary-light: #28a745;
    --color-secondary-dark: #006b28;
    --color-accent: #AB2A3E;         /* Rojo UPV */
    --color-accent-light: #c44152;
    --color-accent-dark: #7a1e2d;
    --color-light: #F2F2F2;          /* Gris UPV */
    --color-white: #FFFFFF;
    --color-dark: #333333;
    --color-gray: #5b5b5b;
    --color-gray-light: #999999;

    /* Colores semánticos */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;

    /* Colores de cobertura */
    --coverage-high: #28a745;
    --coverage-medium: #ffd100;
    --coverage-low: #dc3545;

    /* Tipografía */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-mono: 'Consolas', 'Monaco', monospace;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 75px;
    --footer-height: 60px;
    --content-max-width: 1200px;

    /* Bordes y sombras */
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ========================================
   Reset y Base
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    color: var(--color-accent);
}

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

/* ========================================
   Tipografía
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Header
   ======================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-primary);
    color: var(--color-white);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--spacing-lg);
    max-width: 100%;
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-white);
    text-decoration: none;
}

.logo {
    height: 36px;
    width: auto;
}

.logo-rogle {
    height: 50px;
}

.site-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    white-space: nowrap;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
}

/* ========================================
   Navegación Lateral
   ======================================== */
.sidebar-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    overflow-y: auto;
    z-index: 900;
    transition: transform var(--transition-normal);
}

.nav-container {
    padding: var(--spacing-md) 0;
}

.nav-list {
    list-style: none;
}

.nav-item {
    border-bottom: 1px solid var(--color-light);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-dark);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background-color: var(--color-light);
    color: var(--color-primary);
}

.nav-link i:first-child {
    width: 20px;
    text-align: center;
    color: var(--color-primary);
}

.nav-item.active > .nav-link {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.nav-item.active > .nav-link i {
    color: var(--color-white);
}

.submenu-toggle {
    margin-left: auto;
    font-size: var(--font-size-sm);
    transition: transform var(--transition-fast);
}

.nav-item.has-submenu.active .submenu-toggle,
.nav-item.has-submenu.open .submenu-toggle {
    transform: rotate(180deg);
}

/* Submenu */
.submenu {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    background-color: var(--color-light);
    transition: max-height var(--transition-normal);
}

.nav-item.active .submenu,
.nav-item.open .submenu {
    max-height: 900px;
}

.submenu-item {
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.submenu-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) + 28px);
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.submenu-link:hover {
    background-color: rgba(0, 52, 90, 0.1);
    color: var(--color-primary);
}

.submenu-header {
    padding: 0.55rem var(--spacing-lg) 0.2rem;
    padding-left: calc(var(--spacing-lg) + 28px);
    font-size: 0.67rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    opacity: 0.7;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    margin-top: 0.2rem;
    pointer-events: none;
    user-select: none;
}

/* ========================================
   Contenido Principal
   ======================================== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height) - var(--footer-height));
    padding: var(--spacing-xl);
    flex: 1;
}

.content-wrapper {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* ========================================
   Footer
   ======================================== */
.main-footer {
    margin-left: var(--sidebar-width);
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-xl);
    text-align: center;
}

.footer-content p {
    margin: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
}

.footer-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    height: 32px;
    width: auto;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.footer-logo:hover {
    opacity: 1;
}

.footer-links a {
    color: var(--color-white);
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-white);
}

/* ========================================
   Tarjetas
   ======================================== */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-white);
}

.card-header h3 {
    margin: 0;
    color: var(--color-white);
    font-size: var(--font-size-lg);
}

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

.card-accent .card-header {
    background: var(--color-accent);
}

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

/* ========================================
   Alertas
   ======================================== */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.alert i {
    font-size: var(--font-size-lg);
    margin-top: 2px;
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    border-color: var(--color-info);
    color: var(--color-info);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-color: var(--color-warning);
    color: #856404;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.alert-idea {
    background-color: rgba(171, 42, 62, 0.1);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ========================================
   Tablas
   ======================================== */
.table-responsive {
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-light);
}

.table th {
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
}

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

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

/* ========================================
   Breadcrumbs
   ======================================== */
.breadcrumbs {
    margin-bottom: var(--spacing-lg);
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin-left: var(--spacing-xs);
    color: var(--color-gray-light);
}

.breadcrumb-item a {
    color: var(--color-gray);
}

.breadcrumb-item.active span {
    color: var(--color-primary);
    font-weight: 500;
}

/* ========================================
   Badges
   ======================================== */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
}

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

.badge-secondary {
    background-color: var(--color-gray);
    color: var(--color-white);
}

.badge-accent {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.badge-neutral {
    background-color: var(--color-light);
    color: var(--color-dark);
}

/* ========================================
   Tooltips
   ======================================== */
.tooltip-trigger {
    position: relative;
    border-bottom: 1px dotted var(--color-primary);
    cursor: help;
}

.tooltip-trigger::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
}

.tooltip-trigger:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Collapsible
   ======================================== */
.collapsible {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-light);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.collapsible-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-white);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-primary);
    transition: background var(--transition-fast);
}

.collapsible-header:hover {
    background: var(--color-light);
}

.collapsible-header i {
    transition: transform var(--transition-fast);
}

.collapsible.expanded .collapsible-header i {
    transform: rotate(180deg);
}

.collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.collapsible.expanded .collapsible-content {
    max-height: 2000px;
}

.collapsible-content > * {
    padding: var(--spacing-lg);
}

/* ========================================
   Botones
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

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

.btn-accent {
    background: var(--color-accent);
    color: var(--color-white);
}

.btn-accent:hover {
    background: var(--color-accent-light);
    color: var(--color-white);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ========================================
   Formularios
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-dark);
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    border: 1px solid #ddd;
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 52, 90, 0.1);
}

/* ========================================
   Utilidades
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-gray); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-center { justify-content: center; align-items: center; }
.flex-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }

/* Página hero */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.hero h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* Sección */
.section {
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

/* Lista con iconos */
.icon-list {
    list-style: none;
}

.icon-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.icon-list i {
    color: var(--color-accent);
    margin-top: 4px;
}

/* Principios numerados */
.principle-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    font-weight: bold;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

/* Grid layout */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Overlay para móvil */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

/* ============================================
   VÍDEOS EMBEBIDOS (YouTube)
   ============================================ */

.video-wrapper {
    margin: 2rem 0;
}

.video-title {
    margin-bottom: 1rem;
    color: var(--color-primary);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.video-title i {
    color: #FF0000; /* Rojo de YouTube */
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* Ratio 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
    background: #000;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 0.5rem;
}

/* Variante para vídeos en cards */
.card .video-wrapper {
    margin: 1rem 0;
}

.card .video-container {
    box-shadow: var(--shadow-sm);
}