/* CSS Unificado y de Alto Rendimiento - Liceo Osorno College 2026 */
/* Diseño Responsivo, Premium, Interactivo y Listo para Impresión */

/* --- DECLARACIÓN DE VARIABLES Y SISTEMA DE DISEÑO --- */
:root {
    /* Tipografías */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Niveles Temas de Colores (Inyectados por JS) */
    --color-primary: #6366f1; /* Por defecto Indigo */
    --color-primary-rgb: 99, 102, 241;
    --color-primary-light: rgba(99, 102, 241, 0.08);
    --color-primary-hover: #4f46e5;
    
    /* Colores Fijos */
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.08);
    --color-success-border: #a7f3d0;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
    
    /* Transiciones */
    --transition-all: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Dimensiones */
    --sidebar-width: 330px;
    --page-width: 800px;
}

/* Modo Claro Variables */
body.light-mode {
    --bg-app: #f1f5f9;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --bg-interactive: #f8fafc;
    --bg-interactive-hover: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --border-glass: rgba(226, 232, 240, 0.8);
    --shadow-premium: 0 20px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
}

/* Modo Oscuro Variables */
body.dark-mode {
    --bg-app: #0b1329;
    --bg-card: #131c35;
    --bg-sidebar: #131c35;
    --border-color: #24304f;
    --text-main: #f1f5f9;
    --text-muted: #8fa0c4;
    --bg-interactive: #1d2744;
    --bg-interactive-hover: #26335a;
    --bg-glass: rgba(19, 28, 53, 0.8);
    --border-glass: rgba(36, 48, 79, 0.8);
    --shadow-premium: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
}

/* --- ESTILOS GENERALES Y RESET --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-app);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
}

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    outline: none;
}

/* --- DISEÑO PRINCIPAL (APP LAYOUT) --- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* --- CONTROL SIDEBAR (PANEL IZQUIERDO) --- */
.control-sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    overflow-y: auto;
    transition: var(--transition-all);
}

/* Branding */
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 2px dashed var(--border-color);
}

.brand-logo {
    font-size: 2.2rem;
    color: var(--color-primary);
    transition: var(--transition-all);
}

.sidebar-brand h2 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.sidebar-brand p {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Sidebar Secciones */
.sidebar-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-section h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Selector de Niveles */
.level-selector {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.level-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: left;
    transition: var(--transition-all);
    width: 100%;
}

.level-btn:hover {
    background-color: var(--bg-interactive-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.level-btn.active {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.1);
}

.level-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Colores de nivel en el panel */
.lvl-5-6 { background-color: #10b981; }      /* Emerald */
.lvl-7-8 { background-color: #6366f1; }      /* Indigo */
.lvl-1-2 { background-color: #0ea5e9; }      /* Sky Blue */
.lvl-advanced { background-color: #f59e0b; } /* Amber */

.level-btn-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.level-btn-text strong {
    font-size: 0.95rem;
    color: var(--text-main);
    font-weight: 600;
}

.level-btn-text span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Botones de Acción Global */
.action-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 12px;
    transition: var(--transition-all);
    width: 100%;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 6px 16px rgba(var(--color-primary-rgb), 0.25);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bg-interactive);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-interactive-hover);
    transform: translateY(-2px);
}

.btn-secondary.btn-active {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-accent {
    background-color: #0f172a;
    color: var(--color-white);
}

body.dark-mode .btn-accent {
    background-color: #f8fafc;
    color: #0f172a;
}

.btn-accent:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* Switches / Toggles */
.toggle-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toggle-control {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    user-select: none;
    width: 100%;
}

.toggle-label-text {
    flex: 1;
    padding-right: 12px;
}

.toggle-control input {
    display: none;
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background-color: var(--border-color);
    border-radius: 20px;
    position: relative;
    transition: var(--transition-all);
    flex-shrink: 0;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--color-white);
    top: 3px;
    left: 3px;
    transition: var(--transition-all);
    box-shadow: var(--shadow-sm);
}

.toggle-control input:checked + .toggle-switch {
    background-color: var(--color-primary);
}

.toggle-control input:checked + .toggle-switch::after {
    left: 23px;
}

/* Footer del Sidebar */
.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    transition: var(--transition-all);
    width: 100%;
}

.theme-toggle-btn:hover {
    background-color: var(--bg-interactive-hover);
}

.footer-copyright {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* --- ESPACIO DE TRABAJO DEL DOCUMENTO --- */
.document-workspace {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    overflow-y: auto;
    min-height: 100vh;
}

/* --- FICHA DE TRABAJO (PÁGINA SIMULADA) --- */
.worksheet-page {
    width: var(--page-width);
    background-color: #ffffff; /* Fijo blanco para simular papel en pantalla */
    color: #0f172a; /* Fijo texto oscuro */
    box-shadow: var(--shadow-premium);
    padding: 50px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 28px;
    transition: border-color 0.3s ease;
}

/* Cabecera Examen Oficial */
.worksheet-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 2px solid #0f172a;
    padding-bottom: 12px;
}

.header-logo-section {
    display: flex;
    flex-direction: column;
}

.college-main-name {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: #0f172a;
}

.college-sub-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: #475569;
}

.college-year {
    font-size: 0.82rem;
    font-weight: 500;
    color: #475569;
}

.doc-badge {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    border: 1.5px solid #0f172a;
    padding: 4px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

/* Banner de Título */
.worksheet-title-banner {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.worksheet-title {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.2px;
    color: #0f172a;
    line-height: 1.2;
}

.worksheet-subtitle {
    font-size: 1.15rem;
    font-weight: 600;
    color: #4f46e5; /* Color corporativo inicial */
}

.worksheet-meta-info {
    font-size: 0.85rem;
    color: #475569;
    font-weight: 500;
}

/* Cuadro de Datos del Estudiante */
.student-box {
    border: 1.5px solid #0f172a;
    border-radius: 6px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.student-row {
    display: flex;
    gap: 20px;
    width: 100%;
}

.student-row-grid {
    display: flex;
    gap: 24px;
    width: 100%;
}

.student-field {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    flex: 1;
}

.field-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: #0f172a;
    white-space: nowrap;
    text-transform: uppercase;
}

.field-line {
    border-bottom: 1px dotted #475569;
    flex: 1;
    height: 18px;
}

/* Instrucciones */
.instructions-block {
    background-color: #f8fafc;
    border-left: 4px solid #475569;
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    font-size: 0.85rem;
}

.instructions-block strong {
    font-weight: 700;
    font-size: 0.82rem;
    display: block;
    margin-bottom: 4px;
    color: #0f172a;
}

.instructions-block p {
    color: #334155;
    line-height: 1.5;
}

/* --- TARJETAS DE PROBLEMAS --- */
.problems-container {
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.problem-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    padding-bottom: 24px;
    border-bottom: 1.5px dashed #e2e8f0;
}

.problem-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* Encabezado del problema */
.problem-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.problem-number-label {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: #0f172a;
}

.problem-type-badge {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 6px;
    border-radius: 4px;
    color: #ffffff;
}

.badge-alternativa {
    background-color: #6366f1;
}

.badge-abierta {
    background-color: #f59e0b;
}

/* Cuerpo y contenido del problema */
.problem-card-body {
    font-size: 0.95rem;
    color: #0f172a;
    line-height: 1.6;
}

/* Diagrama SVG */
.problem-diagram-container {
    display: flex;
    justify-content: center;
    margin: 12px 0;
}

.problem-svg {
    max-height: 180px;
    max-width: 100%;
    color: #0f172a;
}

.svg-text {
    fill: currentColor;
    font-family: var(--font-body);
    font-size: 12px;
}

/* Grilla de Opciones Múltiples */
.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px 20px;
    margin-top: 8px;
}

.option-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.9rem;
    color: #334155;
    padding: 4px 0;
}

.option-bubble {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: #64748b;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Opciones en 1 sola columna si son largas */
.options-grid.single-column {
    grid-template-columns: 1fr;
}

/* Espacio de Solución / Desarrollo (solo visible para abiertas al imprimir) */
.print-solution-space {
    display: none;
    border: 1px dashed #cbd5e1;
    border-radius: 6px;
    background-color: #fafafa;
    height: 180px;
    width: 100%;
    margin-top: 12px;
}

/* --- ELEMENTOS DE SOLUCIONES Y RESPUESTAS (WEB) --- */
.solution-detail-box {
    margin-top: 16px;
    border: 1px solid var(--color-success-border);
    background-color: var(--color-success-bg);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: slideDown 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.solution-detail-header {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-success);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
}

.solution-detail-body {
    font-size: 0.88rem;
    color: #1e293b;
    line-height: 1.5;
}

.option-item.correct-opt .option-bubble {
    background-color: #10b981;
    border-color: #10b981;
    color: #ffffff;
}

.option-item.correct-opt {
    color: #047857;
    font-weight: 600;
}

/* --- BOTONES FLOTANTES DE ACCIÓN INTERACTIVA (NO-PRINT) --- */
.card-hover-actions {
    display: flex;
    gap: 6px;
    position: absolute;
    top: 0;
    right: 0;
    opacity: 0;
    transform: translateY(-5px);
    transition: var(--transition-all);
    z-index: 10;
}

.problem-card:hover .card-hover-actions {
    opacity: 1;
    transform: translateY(0);
}

.card-action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-all);
}

.card-action-btn:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.card-action-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.card-action-btn i {
    font-size: 0.8rem;
}

/* Resaltado de ranura activa */
.problem-card.active-slot {
    outline: 2px solid var(--color-primary);
    outline-offset: 6px;
    border-radius: 6px;
    animation: pulseBorder 1.5s infinite;
}

/* --- SOLUCIONARIO DE IMPRESIÓN (HOJA APARTE) --- */
.print-solutions-page {
    display: none;
    margin-top: 40px;
}

.print-solutions-page.show-on-screen {
    display: flex !important;
}

.solutions-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sol-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e2e8f0;
}

.sol-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.sol-item-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: #0f172a;
}

.sol-item-answer {
    font-size: 0.9rem;
    color: #059669;
    font-weight: 700;
}

.sol-item-explanation {
    font-size: 0.88rem;
    color: #334155;
    line-height: 1.5;
}

/* Worksheet Footer */
.worksheet-page-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid #475569;
    text-align: center;
    font-size: 0.75rem;
    color: #475569;
    font-weight: 500;
}

/* Loading state */
.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 60px;
    color: #475569;
    font-size: 1.1rem;
    font-weight: 600;
}

/* --- MODAL SELECTOR MANUAL DE PREGUNTAS (NO-PRINT) --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    width: 680px;
    max-width: 90%;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-premium);
    display: flex;
    flex-direction: column;
    max-height: 85vh;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.2rem;
    color: var(--text-main);
}

.modal-close-btn {
    font-size: 1.8rem;
    background: none;
    color: var(--text-muted);
    line-height: 1;
    transition: var(--transition-all);
}

.modal-close-btn:hover {
    color: var(--color-primary);
}

/* Buscador de la Modal */
.modal-search-bar {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    display: flex;
    align-items: center;
}

.modal-search-bar i {
    position: absolute;
    left: 40px;
    color: var(--text-muted);
}

.modal-search-bar input {
    width: 100%;
    padding: 12px 16px 12px 42px;
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-all);
}

.modal-search-bar input:focus {
    border-color: var(--color-primary);
    background-color: var(--bg-card);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-clear-btn {
    position: absolute;
    right: 40px;
    font-size: 1.25rem;
    background: none;
    color: var(--text-muted);
}

.search-clear-btn:hover {
    color: var(--text-main);
}

/* Cuerpo de la Modal */
.modal-body {
    padding: 20px 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.selector-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    background-color: var(--bg-interactive);
    transition: var(--transition-all);
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: left;
}

.selector-item:hover {
    border-color: var(--color-primary);
    background-color: var(--bg-interactive-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.selector-item.selected {
    border-color: var(--color-success);
    background-color: var(--color-success-bg);
}

.selector-item.in-use-other {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
    opacity: 0.85;
}

.selector-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
}

.selector-badge {
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.68rem;
    color: var(--color-white);
}

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

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

.selector-item-text {
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.5;
}

/* --- TOAST NOTIFICATIONS (NO-PRINT) --- */
.toast-notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1100;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 1;
}

.toast-notification.hidden {
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
}

.toast-notification i {
    font-size: 1.15rem;
    color: var(--color-success);
}

.toast-notification span {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
}

/* --- ANIMACIONES --- */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulseBorder {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(var(--color-primary-rgb), 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0);
    }
}

/* --- CONFIGURACIÓN E SPECÍFICA DE IMPRESIÓN --- */
@media print {
    /* Ocultar elementos interactivos de la pantalla */
    .no-print,
    .control-sidebar,
    .modal-overlay,
    .toast-notification,
    .card-hover-actions {
        display: none !important;
    }
    
    /* Adaptar el contenedor principal */
    .app-container {
        display: block !important;
    }
    
    .document-workspace {
        margin-left: 0 !important;
        padding: 0 !important;
        display: block !important;
        background: none !important;
        overflow: visible !important;
    }
    
    /* Forzar estilos del papel */
    .worksheet-page {
        width: 100% !important;
        max-width: 100% !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
        border-radius: 0 !important;
        background-color: #ffffff !important;
        color: #000000 !important;
        page-break-after: always; /* Cada hoja en página distinta */
        break-after: page;
        min-height: auto !important;
    }
    
    /* Espacio de Desarrollo para preguntas abiertas */
    .print-solution-space {
        display: block !important; /* Visible en papel */
    }
    
    /* Solucionario en Impresión (Condicional) */
    .print-solutions-page {
        display: none; /* Controlado dinámicamente agregando .print-show */
    }
    
    .print-solutions-page.print-show {
        display: flex !important;
        page-break-before: always;
        break-before: page;
    }
    
    /* Forzar textos oscuros para la impresora */
    .worksheet-title, .worksheet-subtitle, .problem-number-label, .problem-card-body, .option-item, .field-label {
        color: #000000 !important;
    }
    
    /* Ajuste de SVG para blanco y negro */
    .problem-svg {
        color: #000000 !important;
        filter: grayscale(1);
    }
    
    /* Ocultar respuestas interactivas de pantalla en el examen */
    .solution-detail-box {
        display: none !important;
    }
    
    .option-item.correct-opt .option-bubble {
        background: none !important;
        border-color: #000000 !important;
        color: #000000 !important;
    }
    
    .option-item.correct-opt {
        color: #000000 !important;
        font-weight: normal !important;
    }
}

/* --- ESTILOS DE LOGOS Y ENCABEZADOS DE COLEGIO --- */
.sidebar-brand-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.header-logo-container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.college-header-logo {
    height: 55px;
    width: auto;
    object-fit: contain;
}

/* --- ESTILOS PARA PANTALLA DE ACCESO (LOGIN) --- */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at top right, rgba(var(--color-primary-rgb), 0.15), transparent 60%), var(--bg-app);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.login-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.login-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    padding: 40px;
    width: 460px;
    max-width: 90%;
    text-align: center;
    box-shadow: var(--shadow-premium);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: slideDown 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.login-logo {
    height: 90px;
    width: auto;
    object-fit: contain;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.08));
}

.login-card h2 {
    font-size: 1.6rem;
    color: var(--text-main);
    font-weight: 800;
    margin-bottom: 6px;
}

.login-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 4px;
}

.login-dept {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
}

.login-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    margin-bottom: 20px;
}

.login-form label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-main);
    margin-left: 4px;
}

.autocomplete-container {
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
}

.autocomplete-container input {
    width: 100%;
    padding: 14px 40px 14px 44px;
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-main);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-all);
}

.autocomplete-container input:focus {
    border-color: var(--color-primary);
    background-color: var(--bg-card);
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

.autocomplete-container .input-icon {
    position: absolute;
    left: 16px;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

.clear-input-btn {
    position: absolute;
    right: 16px;
    font-size: 1.4rem;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
}

.clear-input-btn:hover {
    color: var(--text-main);
}

.autocomplete-items {
    position: absolute;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 14px 14px;
    z-index: 99999;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 200px;
    overflow-y: auto;
    background-color: var(--bg-card);
    box-shadow: var(--shadow-lg);
}

.autocomplete-items div {
    padding: 12px 16px;
    cursor: pointer;
    text-align: left;
    font-size: 0.9rem;
    transition: var(--transition-all);
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
}

.autocomplete-items div:last-child {
    border-bottom: none;
}

.autocomplete-items div:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.login-btn {
    width: 100%;
    margin-top: 10px;
    padding: 14px;
    border-radius: 14px;
    font-weight: 700;
}

.login-btn:disabled {
    background-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.login-bases-btn {
    background: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-all);
    margin-top: 10px;
}

.login-bases-btn:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* --- ESTILOS DE DESBLOQUEO / CONTRASEÑA DE SOLUCIONARIO --- */
.small-modal {
    width: 440px;
}

.password-modal-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: stretch;
}

.password-modal-body p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.password-input-wrapper input {
    width: 100%;
    padding: 14px 50px 14px 16px;
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: var(--transition-all);
}

.password-input-wrapper input:focus {
    border-color: var(--color-primary);
    background-color: var(--bg-card);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.toggle-pwd-btn {
    position: absolute;
    right: 16px;
    background: none;
    color: var(--text-muted);
    font-size: 1rem;
    transition: var(--transition-all);
}

.toggle-pwd-btn:hover {
    color: var(--text-main);
}

.submit-pwd-btn {
    padding: 12px;
    border-radius: 12px;
    font-weight: 700;
}

.error-msg {
    color: var(--color-danger);
    font-size: 0.82rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.error-msg.hidden {
    display: none !important;
}

/* Botones bloqueados */
.sidebar-action-btn.locked {
    background-color: var(--bg-interactive);
    border: 1px dashed var(--border-color);
    color: var(--text-muted);
}

.sidebar-action-btn.locked:hover {
    background-color: #fee2e2;
    border-color: var(--color-danger);
    color: var(--color-danger);
    box-shadow: none;
    transform: none;
}

.locked-control {
    opacity: 0.65;
}

.inline-lock {
    font-size: 0.8rem;
    color: var(--color-success);
    margin-left: 4px;
}

.inline-lock.hidden {
    display: none;
}

.btn-logout {
    margin-top: 8px;
    background-color: #fee2e2 !important;
    border: 1px solid #fca5a5 !important;
    color: #ef4444 !important;
}

body.dark-mode .btn-logout {
    background-color: rgba(239, 68, 68, 0.15) !important;
    border-color: rgba(239, 68, 68, 0.3) !important;
    color: #fca5a5 !important;
}

.btn-logout:hover {
    background-color: #ef4444 !important;
    color: var(--color-white) !important;
}

body.dark-mode .btn-logout:hover {
    background-color: #ef4444 !important;
    color: var(--color-white) !important;
}

/* --- ESTILOS DEL MODAL DE BASES DEL CONCURSO --- */
.large-modal {
    width: 820px;
    max-width: 95%;
}

.bases-modal-body {
    max-height: 65vh;
    overflow-y: auto;
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.7;
    padding: 24px 30px;
    text-align: left;
}

.bases-modal-body h1, .bases-modal-body h2, .bases-modal-body h3 {
    color: var(--color-primary);
    margin-top: 24px;
    margin-bottom: 12px;
    font-weight: 700;
}

.bases-modal-body h1 {
    font-size: 1.4rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.bases-modal-body h2 {
    font-size: 1.2rem;
    margin-top: 20px;
}

.bases-modal-body h3 {
    font-size: 1.05rem;
    margin-top: 16px;
    color: var(--text-main);
    border-left: 3px solid var(--color-primary);
    padding-left: 10px;
}

.bases-modal-body p {
    margin-bottom: 14px;
}

.bases-modal-body ul {
    margin-left: 20px;
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.bases-modal-body li {
    font-size: 0.92rem;
}

.bases-modal-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.88rem;
}

.bases-modal-body th, .bases-modal-body td {
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    text-align: left;
}

.bases-modal-body th {
    background-color: var(--bg-interactive);
    font-weight: 700;
}

.bases-modal-body tr:nth-child(even) td {
    background-color: var(--bg-interactive-hover);
}

/* --- ESTILOS DE INTERACTIVIDAD DE PREGUNTAS (WEB) --- */
.option-item.interactive-opt {
    cursor: pointer;
    border-radius: 8px;
    padding: 6px 12px;
    border: 1px solid transparent;
    background-color: var(--bg-interactive);
    transition: var(--transition-all);
}

.option-item.interactive-opt:hover {
    background-color: var(--bg-interactive-hover);
    border-color: var(--border-color);
}

.option-item.selected-user {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.option-item.selected-user .option-bubble {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* Pregunta abierta self-evaluation check */
.open-question-self-eval {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background-color: var(--bg-interactive);
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    margin-top: 12px;
    font-size: 0.88rem;
    color: var(--text-main);
    cursor: pointer;
    user-select: none;
    transition: var(--transition-all);
    width: 100%;
}

.open-question-self-eval:hover {
    background-color: var(--bg-interactive-hover);
}

.open-question-self-eval input {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.open-question-self-eval.logged {
    border-color: var(--color-success);
    background-color: var(--color-success-bg);
    color: #047857;
    font-weight: 600;
}

/* Botón inferior para finalizar */
.worksheet-actions-bottom {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: 10px;
}

.grade-sheet-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: 12px;
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.3);
    transition: var(--transition-all);
}

.grade-sheet-btn:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.4);
}

/* --- ESTILOS DE ESTADÍSTICAS Y INTENTOS --- */
.stats-modal-body {
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: stretch;
}

.stats-student-info h4 {
    font-size: 1.15rem;
    color: var(--text-main);
    font-weight: 800;
}

.stats-student-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stats-summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.stat-box-summary {
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stats-table-wrapper {
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.stats-table th, .stats-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.stats-table th {
    background-color: var(--bg-interactive);
    font-weight: 700;
    color: var(--text-muted);
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.clear-stats-btn {
    background: none;
    border: 1px solid #fca5a5;
    color: #ef4444;
    padding: 10px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition-all);
    align-self: flex-start;
}

.clear-stats-btn:hover {
    background-color: #fee2e2;
}

/* --- ESTILOS DE RESULTADOS DE EVALUACIÓN --- */
.results-modal-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.results-radial-progress {
    width: 120px;
    height: 120px;
}

.circular-chart {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

.circle-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 2.8;
}

.circle {
    fill: none;
    stroke-width: 2.8;
    stroke-linecap: round;
    transition: stroke-dasharray 0.6s ease;
}

.percentage {
    font-family: var(--font-heading);
    fill: var(--text-main);
    font-size: 8px;
    font-weight: 800;
    text-anchor: middle;
}

.results-feedback h4 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 4px;
}

.results-feedback p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.results-details-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 180px;
    overflow-y: auto;
    padding: 4px;
}

.results-detail-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background-color: var(--bg-interactive);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.85rem;
}

.results-detail-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.results-detail-number {
    font-weight: 700;
    color: var(--text-main);
}

.results-detail-type {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 5px;
    border-radius: 4px;
    color: var(--color-white);
}

.results-detail-status {
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
}

.results-detail-status.correct {
    color: var(--color-success);
}

.results-detail-status.incorrect {
    color: var(--color-danger);
}

.results-detail-status.unevaluated {
    color: var(--color-warning);
}

.results-actions {
    display: flex;
    gap: 10px;
    width: 100%;
    margin-top: 10px;
}

.results-actions button {
    flex: 1;
    padding: 12px;
    border-radius: 10px;
    font-weight: 700;
}