/* ==========================================================
   PORTAL INTERACTIVO SENA - TECNOACADEMIA NEIVA
   Sistema de Diseño Moderno (Dark Mode + Glassmorphism + Neon)
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Rajdhani:wght@500;600;700&display=swap');

:root {
    --bg-dark: #070a13;
    --bg-surface: rgba(15, 23, 42, 0.78);
    --bg-surface-elevated: rgba(30, 41, 59, 0.7);
    --bg-card: rgba(17, 24, 39, 0.85);
    --bg-input: rgba(8, 12, 22, 0.75);
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(57, 169, 0, 0.4);
    
    --sena-green: #39a900;
    --sena-neon: #22c55e;
    --sena-glow: rgba(34, 197, 94, 0.25);
    
    --color-blue: #38bdf8;
    --color-indigo: #818cf8;
    --color-amber: #f59e0b;
    --color-red: #f43f5e;
    --color-purple: #c084fc;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-pill: 9999px;
    
    --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 25px rgba(34, 197, 94, 0.25);
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(57, 169, 0, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(56, 189, 248, 0.06) 0%, transparent 40%),
        linear-gradient(rgba(34, 197, 94, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 197, 94, 0.03) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 36px 36px, 36px 36px;
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
}

/* Tipografía de títulos */
h1, h2, h3, h4, .brand-title {
    font-family: 'Rajdhani', sans-serif;
    letter-spacing: 0.5px;
    color: #ffffff;
    font-weight: 700;
}

/* ==========================================================
   LAYOUT Y CONTENEDORES
   ========================================================== */
.app-wrapper {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 24px 20px 60px 20px;
    flex: 1;
}

.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 30px 20px;
}

/* Efecto Glassmorphism */
.glass-card {
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.5), transparent);
}

/* ==========================================================
   HEADER Y NAVBAR
   ========================================================== */
.top-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    margin-bottom: 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
}

.brand-logo {
    height: 48px;
    width: auto;
    filter: drop-shadow(0 0 10px rgba(34, 197, 94, 0.4));
    transition: var(--transition);
}

.brand-logo:hover {
    transform: scale(1.05);
}

.brand-info h1 {
    font-size: 20px;
    line-height: 1.2;
    margin: 0;
}

.brand-info p {
    font-size: 12px;
    color: var(--sena-neon);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.user-nav-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 13px;
}

.user-badge .role-tag {
    background: rgba(34, 197, 94, 0.15);
    color: var(--sena-neon);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

/* ==========================================================
   ALERTAS Y MENSAJES TOAST (Django Messages)
   ========================================================== */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: #0f172a;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
    border-left: 4px solid var(--sena-neon);
    color: #ffffff;
    font-size: 14px;
    animation: slideIn 0.3s ease;
}

.toast.toast-error {
    border-left-color: var(--color-red);
}

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

.toast.toast-info {
    border-left-color: var(--color-blue);
}

.toast-close {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
}

.toast-close:hover {
    color: #ffffff;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================
   BOTONES MODERNOS
   ========================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, #39a900 0%, #22c55e 100%);
    color: #070a13;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #44ca00 0%, #34d399 100%);
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-danger {
    background: rgba(244, 63, 94, 0.1);
    color: #fda4af;
    border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
    background: var(--color-red);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(244, 63, 94, 0.4);
    transform: translateY(-2px);
}

.btn-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #fcd34d;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: var(--color-amber);
    color: #000;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
    transform: translateY(-2px);
}

.btn-info {
    background: rgba(56, 189, 248, 0.1);
    color: #7dd3fc;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.btn-info:hover {
    background: var(--color-blue);
    color: #000;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.4);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: var(--radius-sm);
}

.btn-block {
    width: 100%;
}

/* ==========================================================
   FORMULARIOS E INPUTS
   ========================================================== */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.form-control, .form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--text-main);
    background-color: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--sena-neon);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    background-color: rgba(12, 18, 32, 0.9);
}

.form-select option {
    background-color: #0f172a;
    color: #ffffff;
}

/* Estilo para file input personalizado */
.file-upload-box {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition);
}

.file-upload-box:hover {
    border-color: var(--sena-neon);
    background: rgba(34, 197, 94, 0.05);
}

/* ==========================================================
   TARJETAS KPI EJECUTIVAS (ADMIN)
   ========================================================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 28px;
}

.kpi-card {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-3px);
    border-color: rgba(34, 197, 94, 0.3);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.icon-green { background: rgba(34, 197, 94, 0.15); color: var(--sena-neon); }
.icon-blue  { background: rgba(56, 189, 248, 0.15); color: var(--color-blue); }
.icon-amber { background: rgba(245, 158, 11, 0.15); color: var(--color-amber); }
.icon-purple{ background: rgba(192, 132, 252, 0.15); color: var(--color-purple); }

.kpi-content h4 {
    font-size: 26px;
    margin: 0;
    line-height: 1;
}

.kpi-content p {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    margin-top: 4px;
}

/* ==========================================================
   NAVEGACIÓN POR PESTAÑAS (TABS)
   ========================================================== */
.tabs-nav {
    display: flex;
    gap: 8px;
    padding: 8px;
    background: rgba(15, 23, 42, 0.6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: #070a13;
    background: var(--sena-neon);
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
}

.tab-content {
    display: none;
    animation: fadeIn 0.35s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================
   TABLAS Y LISTADOS
   ========================================================== */
.table-container {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    overflow: hidden;
}

.table-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
    flex-wrap: wrap;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
    min-width: 220px;
    max-width: 350px;
}

.search-input {
    width: 100%;
    padding: 8px 14px 8px 36px;
    border-radius: var(--radius-md);
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: #ffffff;
    font-size: 13px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    font-size: 14px;
}

.table-responsive {
    overflow-x: auto;
    max-height: 520px;
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.custom-table thead {
    position: sticky;
    top: 0;
    background: #0b1120;
    z-index: 10;
}

.custom-table th {
    padding: 14px 18px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.8px;
    border-bottom: 1px solid var(--border-subtle);
}

.custom-table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: #cbd5e1;
    vertical-align: middle;
}

.custom-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* ==========================================================
   INSIGNIAS / BADGES DE ESTADO
   ========================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-enviado {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-aprobado {
    background: rgba(34, 197, 94, 0.15);
    color: #34d399;
    border: 1px solid rgba(34, 197, 94, 0.4);
}

.badge-noaprobado {
    background: rgba(244, 63, 94, 0.15);
    color: #f87171;
    border: 1px solid rgba(244, 63, 94, 0.4);
}

.badge-curso {
    background: rgba(56, 189, 248, 0.1);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.3);
    font-size: 10px;
}

/* ==========================================================
   ESTUDIANTE: VISTA CAMPUS VIRTUAL & AULA
   ========================================================== */
.campus-hub {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.campus-hub-logo {
    width: 140px;
    margin-bottom: 24px;
    filter: drop-shadow(0 0 25px rgba(34, 197, 94, 0.4));
}

.campus-hub h1 {
    font-size: 34px;
    margin-bottom: 8px;
}

.campus-hub p.lead {
    font-size: 18px;
    color: var(--sena-neon);
    margin-bottom: 40px;
    font-weight: 600;
}

.campus-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    width: 100%;
    max-width: 760px;
}

.course-portal-card {
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.course-portal-card:hover {
    transform: translateY(-6px);
    border-color: var(--sena-neon);
    box-shadow: 0 15px 35px rgba(34, 197, 94, 0.2);
    background: rgba(34, 197, 94, 0.04);
}

.course-portal-card h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.course-portal-card p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Barra de progreso de guías */
.progress-card {
    padding: 24px;
    margin-bottom: 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.progress-track {
    width: 100%;
    height: 14px;
    background: #1e293b;
    border-radius: var(--radius-pill);
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.5);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #38bdf8 0%, #22c55e 100%);
    border-radius: var(--radius-pill);
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.6);
}

/* Cuadrícula de Actividades del Estudiante */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.activity-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.activity-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 197, 94, 0.3);
    box-shadow: var(--shadow-soft);
}

.activity-card-header {
    margin-bottom: 16px;
}

.activity-card-header h3 {
    font-size: 18px;
    margin-top: 6px;
}

.activity-card-body p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.5;
}

/* ==========================================================
   WHATSAPP FLOATING WIDGET
   ========================================================== */
.whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 999;
    text-decoration: none;
    transition: var(--transition);
}

.wa-speech-bubble {
    background: #ffffff;
    color: #0f172a;
    font-size: 13px;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    position: relative;
    white-space: nowrap;
}

.wa-speech-bubble::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border-width: 6px 0 6px 6px;
    border-style: solid;
    border-color: transparent transparent transparent #ffffff;
}

.wa-btn-circle {
    width: 56px;
    height: 56px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.5);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.whatsapp-float:hover .wa-btn-circle {
    transform: scale(1.12);
}

/* ==========================================================
   RESPONSIVIDAD Y MEDIA QUERIES
   ========================================================== */
@media (max-width: 768px) {
    .top-navbar {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    
    .user-nav-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .campus-hub h1 {
        font-size: 26px;
    }
    
    .campus-cards-grid {
        grid-template-columns: 1fr;
    }
}