/* --- SISTEMA DE DISEÑO --- */
:root {
  --color-primario: #336699;
  --color-primario-oscuro: #1a5276;
  --color-secundario: #f6bb00;
  --color-secundario-hover: #e6a800;
  --color-fondo-web: #f8fafc;
  --color-blanco: #ffffff;
  --color-texto: #0f172a;
  --color-gris: #475569;
  --color-gris-claro: #64748b;
  --color-borde: #e2e8f0;
  --color-borde-claro: #f1f5f9;
  --color-exito: #10b981;
  --color-error: #ef4444;
  --sombra-card: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
  --sombra-hover: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --font-titulos: 'Oswald', sans-serif;
  --font-cuerpo: 'Roboto', sans-serif;
  --border-radius: 12px;
  --border-radius-sm: 6px;
  --transition: all 0.3s ease;
}

/* --- RESET Y ESTILOS GLOBALES --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-cuerpo);
  background-color: var(--color-fondo-web);
  color: var(--color-texto);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app-content {
  transition: opacity 0.3s ease-in-out;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-titulos);
  font-weight: 700;
  color: var(--color-primario-oscuro);
}

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

a:hover {
  color: var(--color-primario-oscuro);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* --- COMPONENTES REUTILIZABLES --- */
.card {
  background-color: var(--color-blanco);
  border-radius: var(--border-radius);
  box-shadow: var(--sombra-card);
  padding: 1.5rem;
  transition: var(--transition);
  border: 1px solid var(--color-borde);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sombra-hover);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-cuerpo);
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 1rem;
}

.btn-primario {
  background-color: var(--color-primario);
  color: var(--color-blanco);
}

.btn-primario:hover {
  background-color: var(--color-primario-oscuro);
}

.btn-secundario {
  background-color: var(--color-secundario);
  color: var(--color-texto);
}

.btn-secundario:hover {
  background-color: var(--color-secundario-hover);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-gris);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-borde);
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primario);
  box-shadow: 0 0 0 3px rgba(51, 102, 153, 0.2);
}

/* --- TOAST NOTIFICATIONS --- */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius-sm);
  color: var(--color-blanco);
  font-weight: 500;
  box-shadow: var(--sombra-hover);
  opacity: 0;
  transform: translateX(100%);
  animation: slideIn 0.5s forwards, fadeOut 0.5s 7.5s forwards;
}

.toast-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.5rem;
    cursor: pointer;
    margin-left: 1rem;
}

.toast.success {
  background-color: var(--color-exito);
}

.toast.error {
  background-color: var(--color-error);
}

@keyframes slideIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* --- LOADER --- */
.loader {
  border: 4px solid var(--color-borde-claro);
  border-top: 4px solid var(--color-primario);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 2rem auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* --- LAYOUT & NAVBAR --- */
.spa-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-blanco);
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.nav-brand {
    font-family: var(--font-titulos);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primario);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--color-gris);
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-links a:hover {
    color: var(--color-primario);
}

.nav-links a.active {
    color: var(--color-primario);
    border-bottom-color: var(--color-primario);
}

/* --- AUTHENTICATION --- */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

.auth-card {
    max-width: 450px;
    width: 100%;
}

.auth-logo {
    text-align: center;
    font-family: var(--font-titulos);
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-primario);
    margin-bottom: 1.5rem;
}

/* --- DASHBOARD --- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.kpi-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.kpi-card i {
    margin-bottom: 1rem;
}

.kpi-card h3 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.kpi-card p {
    font-weight: 500;
    color: var(--color-gris-claro);
}

.kpi-primary { border-left: 5px solid var(--color-primario); }
.kpi-success { border-left: 5px solid var(--color-exito); }
.kpi-warning { border-left: 5px solid var(--color-secundario); }
.kpi-info { border-left: 5px solid #3498db; }

/* --- MODAL --- */
.modal-background {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}
.modal-content {
    display: flex;
    flex-direction: column;
    max-height: 90vh;
    width: 90%;
}
.modal-header {
    border-bottom: 1px solid var(--color-borde);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h2 { margin: 0; }
.modal-close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-gris-claro);
}
.modal-body {
    flex: 1;
    overflow-y: auto;
    padding-right: 1rem;
}
.modal-footer {
    text-align: right;
    margin-top: 1.5rem;
    border-top: 1px solid var(--color-borde);
    padding-top: 1rem;
}
.modal-footer .btn { margin-left: 0.5rem; }

/* --- CHIP --- */
.chip {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    background-color: var(--color-borde);
    color: var(--color-gris);
}
.chip-success {
    background-color: #dcfce7;
    color: #166534;
}
.chip-warning {
    background-color: #fef9c3;
    color: #854d0e;
}

/* --- CONVOCATORIAS VIEW --- */
.convocatorias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.card.card-selected {
    border-left: 5px solid var(--color-exito);
    box-shadow: var(--sombra-hover);
    transform: translateY(-2px);
}

.card-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--color-borde);
    padding-bottom: 0.5rem;
}
.card-content ul {
    list-style-position: inside;
    padding-left: 1rem;
}

/* --- TEST SYSTEM & OPTIONS BUTTONS --- */
.container-test {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.test-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.test-progreso {
    font-weight: 700;
    color: var(--color-gris-claro);
}

.opciones-test {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.opcion {
    background-color: var(--color-blanco);
    border: 1px solid var(--color-borde);
    border-radius: var(--border-radius);
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    color: var(--color-texto);
    position: relative;
    user-select: none;
}

.opcion:hover {
    border-color: var(--color-primario);
    background-color: var(--color-borde-claro);
    transform: translateY(-2px);
    box-shadow: var(--sombra-card);
}

.opcion-seleccionada {
    border-color: var(--color-primario-oscuro);
    background-color: #ebf5fb !important; /* light blue background */
    color: var(--color-primario-oscuro);
    font-weight: 700;
    box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.2);
}

.opcion-seleccionada::after {
    content: '\f058'; /* check-circle icon from FontAwesome */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 1.5rem;
    font-size: 1.25rem;
    color: var(--color-primario-oscuro);
}

.test-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-borde);
    flex-wrap: wrap;
    gap: 1rem;
}

/* --- ADMIN CONTENT MANAGER --- */
.content-manager-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    align-items: flex-start;
}

.outline-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.outline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border: 1px solid var(--color-borde-claro);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-fondo-web);
}

.outline-item span {
    font-weight: 500;
    flex-grow: 1;
    padding-right: 1rem;
}

@media (max-width: 900px) {
    .content-manager-grid {
        grid-template-columns: 1fr;
    }
}

/* --- CHATBOT --- */
.chatbot-fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: var(--color-primario);
    color: var(--color-blanco);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--sombra-hover);
    transition: var(--transition);
    z-index: 1000;
}
.chatbot-fab:hover {
    transform: scale(1.1);
    background-color: var(--color-primario-oscuro);
}

.chatbot-window {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 400px;
    max-width: 90vw;
    height: 600px;
    max-height: 80vh;
    background-color: var(--color-blanco);
    border-radius: var(--border-radius);
    box-shadow: var(--sombra-hover);
    display: none; /* Initially hidden */
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--color-borde);
    z-index: 1001;
}

.chatbot-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background-color: var(--color-primario);
    color: var(--color-blanco);
}
.chatbot-header h3 {
    margin: 0;
    color: inherit;
}
.chatbot-close-btn {
    background: none;
    border: none;
    color: var(--color-blanco);
    font-size: 1.75rem;
    cursor: pointer;
}

.chatbot-messages {
    flex-grow: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chat-message {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    max-width: 85%;
    line-height: 1.5;
}
.bot-message {
    background-color: var(--color-borde-claro);
    align-self: flex-start;
}
.user-message {
    background-color: var(--color-primario);
    color: var(--color-blanco);
    align-self: flex-end;
}

.chatbot-input {
    padding: 1rem;
    border-top: 1px solid var(--color-borde);
}
.chatbot-input form {
    display: flex;
    gap: 0.5rem;
}
.chatbot-input input {
    flex-grow: 1;
    border: 1px solid var(--color-borde);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem;
    font-size: 1rem;
}
.chatbot-input button {
    border: none;
    background-color: var(--color-primario);
    color: var(--color-blanco);
    border-radius: var(--border-radius-sm);
    width: 45px;
    height: 45px;
    cursor: pointer;
    font-size: 1rem;
}
.chatbot-input button:hover {
    background-color: var(--color-primario-oscuro);
}

.typing-indicator span {
    display: inline-block;
    animation: bounce 1.4s infinite;
    font-size: 1.5rem;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-8px); }
}

/* --- STUDY VIEW PAGINATOR --- */
.study-paginator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-borde);
}
.study-paginator span {
    font-weight: 700;
    color: var(--color-gris);
}
.study-paginator button:disabled {
    background-color: var(--color-borde);
    cursor: not-allowed;
    color: var(--color-gris-claro);
}

/* --- STUDY VIEW TOOLS (INDEX & SEARCH) --- */
.study-tools {
    padding: 1.5rem;
    margin-bottom: 2rem;
    background-color: var(--color-fondo-web);
}
.study-tools .form-group {
    margin-bottom: 1rem;
}
.study-tools .form-group:last-child {
    margin-bottom: 0;
}
.search-form {
    display: flex;
}
.search-form input {
    flex-grow: 1;
    border-right: none;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.search-form button {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.search-results-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.search-results-list li a {
    display: block;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    color: var(--color-primario);
}
.search-results-list li a:hover {
    background-color: var(--color-borde-claro);
}

/* --- ADMIN AUTO-GENERATION STATUS --- */
.auto-gen-status {
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-borde-claro);
    font-weight: 500;
    border-left: 5px solid var(--color-gris);
}
.auto-gen-status-success {
    background-color: #f0fdf4;
    color: #15803d;
    border-left-color: #22c55e;
}
.auto-gen-status-error {
    background-color: #fff1f2;
    color: #be123c;
    border-left-color: var(--color-error);
}

/* --- NUEVA VISTA DE ESTUDIO CON SIDEBAR --- */
.study-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 1.5rem;
    align-items: start;
    margin-top: 1.5rem;
}
@media (max-width: 900px) {
    .study-layout {
        grid-template-columns: 1fr;
    }
}
.study-sidebar {
    position: sticky;
    top: 2rem;
}
.sidebar-sections-list::-webkit-scrollbar {
    width: 6px;
}
.sidebar-sections-list::-webkit-scrollbar-track {
    background: transparent;
}
.sidebar-sections-list::-webkit-scrollbar-thumb {
    background: var(--color-borde);
    border-radius: var(--border-radius-sm);
}
.sidebar-section-item {
    transition: all 0.2s ease;
}
.sidebar-section-item:hover {
    background-color: var(--color-borde-claro) !important;
}
.sidebar-section-item.active {
    border-color: var(--color-primario) !important;
}

/* --- TEMA STATS --- */
.tema-stats {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.chip i {
    margin-right: 0.35rem;
}
.chip-info {
    background-color: #e0f2fe;
    color: #0369a1;
}
.chip-error {
    background-color: #ffe4e6;
    color: #9f1239;
}

/* --- ALERT BANNERS --- */
.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid transparent;
    font-weight: 500;
}
.alert-success {
    color: #14532d;
    background-color: #dcfce7;
    border-color: #bbf7d0;
}
.alert-error {
    color: #881337;
    background-color: #fecdd3;
    border-color: #fca5a5;
}

/* --- PULSE ANIMATION FOR PROGRESS BAR --- */
.pulse-animation {
    background-size: 200% 200%;
    animation: gradientShift 2s ease infinite, pulseGlow 1.5s ease-in-out infinite alternate;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes pulseGlow {
    0% { opacity: 0.8; box-shadow: 0 0 5px rgba(59, 130, 246, 0.5); }
    100% { opacity: 1; box-shadow: 0 0 15px rgba(6, 182, 212, 0.8); }
}