/* assets/css/dashboard-moderno.css */
/* Visual Identity System for Escuela de Oficios Virtual - Student Dashboard */

:root {
    color-scheme: dark;
    --bg-color: #050c1a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-bg-solid: #0d1626;
    --sidebar-bg: #070f21;
    --text-primary: #f8f9fa;
    --text-secondary: #a0aec0;
    --azul-primary: #003366;
    --celeste-accent: #0088cc;
    --amarillo-gold: #ffcc00;
    --success-green: #2ecc71;
    --danger-red: #e74c3c;
    --border-color: rgba(255, 255, 255, 0.08);
    --font-family: 'Barlow', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(0, 51, 102, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(0, 136, 204, 0.15) 0px, transparent 50%);
    color: var(--text-primary);
    font-family: var(--font-family);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* ==========================================================================
   Sidebar Navigation
   ========================================================================== */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    height: 100vh;
    max-height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    left: 0;
    z-index: 100;
    transition: all 0.3s ease;
    overflow-y: auto;
    overscroll-behavior: contain;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 204, 0, 0.45) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 7px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 204, 0, 0.35);
    border-radius: 999px;
}

.sidebar-brand {
    padding: 24px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    min-height: 140px;
    box-sizing: border-box;
}

.sidebar-brand img {
    max-width: 90%;
    max-height: 100px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.sidebar-brand span {
    font-weight: 800;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    background: linear-gradient(135deg, #ffffff, var(--celeste-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 12px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 0;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.menu-item a:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.menu-item.active a {
    color: var(--bg-color);
    background: linear-gradient(135deg, var(--amarillo-gold), #e6b800);
    box-shadow: 0 4px 15px rgba(255, 204, 0, 0.3);
}

.menu-item.active a svg {
    stroke: var(--bg-color);
}

.sidebar-footer {
    padding: 20px 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: auto;
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-layout {
    margin-left: 260px;
    width: calc(100% - 260px);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}

.topbar {
    height: 70px;
    background-color: rgba(7, 15, 33, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 90;
}

.topbar-title h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--celeste-accent), var(--azul-primary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 4px 10px rgba(0, 136, 204, 0.25);
}

.user-info-text {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 14px;
}

.user-role {
    font-size: 11px;
    color: var(--text-secondary);
}

.content-body {
    padding: 30px;
    flex-grow: 1;
    max-width: 1200px;
    width: 100%;
    box-sizing: border-box;
    margin: 0 auto;
}

/* ==========================================================================
   Tab / View Views Control
   ========================================================================== */
.view-panel {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.view-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Design Tokens: Cards, Badges, Metrics
   ========================================================================== */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    background-color: var(--card-bg-solid);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 204, 0, 0.08) 0%, transparent 70%);
}

.metric-info h3 {
    margin: 0;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.metric-value {
    font-size: 28px;
    font-weight: 800;
    margin-top: 6px;
    background: linear-gradient(135deg, #ffffff, #d3d3d3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background-color: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-card.accent .metric-icon {
    background-color: rgba(255, 204, 0, 0.1);
}

.glass-card {
    background-color: var(--card-bg-solid);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.glass-card h2 {
    margin-top: 0;
    font-size: 20px;
    font-weight: 700;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ==========================================================================
   Course and Progress Cards
   ========================================================================== */
.curso-card {
    border: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.02);
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.curso-card:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 136, 204, 0.3);
    background-color: rgba(255, 255, 255, 0.03);
}

.curso-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.curso-title h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.curso-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.curso-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

/* Progress bar */
.progress-container {
    background-color: rgba(255, 255, 255, 0.08);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 15px;
    margin-bottom: 10px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, var(--celeste-accent), #00b4d8);
    border-radius: 4px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ==========================================================================
   Badges
   ========================================================================== */
.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge.confirmada, .badge.ok, .badge.pagado {
    background-color: rgba(46, 204, 113, 0.15);
    color: var(--success-green);
    border: 1px solid rgba(46, 204, 113, 0.2);
}

.badge.pendiente, .badge.verificacion_manual, .badge.en_curso {
    background-color: rgba(255, 204, 0, 0.1);
    color: var(--amarillo-gold);
    border: 1px solid rgba(255, 204, 0, 0.2);
}

.badge.cancelada, .badge.error, .badge.rechazado, .badge.vencido {
    background-color: rgba(231, 76, 60, 0.15);
    color: var(--danger-red);
    border: 1px solid rgba(231, 76, 60, 0.2);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-family);
}

.btn:hover {
    background-color: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

.btn.primary {
    background: linear-gradient(135deg, var(--celeste-accent), #006699);
    border: none;
}

.btn.primary:hover {
    box-shadow: 0 4px 15px rgba(0, 136, 204, 0.3);
}

.btn.accent {
    background: linear-gradient(135deg, var(--amarillo-gold), #e6b800);
    color: var(--bg-color);
    border: none;
}

.btn.accent:hover {
    box-shadow: 0 4px 15px rgba(255, 204, 0, 0.3);
}

.btn.danger {
    background-color: rgba(231, 76, 60, 0.1);
    border-color: rgba(231, 76, 60, 0.3);
    color: var(--danger-red);
}

.btn.danger:hover {
    background-color: rgba(231, 76, 60, 0.2);
}

.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

/* ==========================================================================
   Classes list & Academic Items
   ========================================================================== */
.clase-item {
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
}

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

.clase-item:first-child {
    padding-top: 0;
}

.clase-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.clase-meta {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 6px;
}

.clase-desc {
    font-size: 13.5px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-top: 10px;
}

.clase-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 16px;
}

/* Video Player Area */
.video-container {
    display: none;
    margin-top: 15px;
    background-color: #000;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.video-container.activo {
    display: block;
}

.video-header {
    background-color: rgba(0, 0, 0, 0.6);
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    font-size: 13px;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
}

.video-close-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.2s;
}

.video-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.video-wrapper {
    position: relative;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    width: 100%;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ==========================================================================
   Exámenes & Preguntas
   ========================================================================== */
.questions-box, .exams-box {
    margin-top: 15px;
    background-color: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.questions-box h5, .exams-box h5 {
    margin: 0 0 12px 0;
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 700;
}

.question-item, .exam-item {
    background-color: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 10px;
}

.question-item:last-child, .exam-item:last-child {
    margin-bottom: 0;
}

.question-text, .exam-text {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
}

.question-text strong, .exam-text strong {
    color: var(--text-primary);
}

.question-footer, .exam-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    gap: 10px;
}

.question-meta, .exam-meta {
    font-size: 11px;
    color: var(--text-secondary);
}

/* ==========================================================================
   Alerts & Personal Data
   ========================================================================== */
.alert {
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 24px;
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert.success {
    background-color: rgba(46, 204, 113, 0.1);
    border: 1px solid rgba(46, 204, 113, 0.2);
    color: var(--success-green);
}

.alert.error {
    background-color: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.2);
    color: var(--danger-red);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-item label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    font-weight: 700;
}

.info-item span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.dni-verified-box {
    margin-top: 18px;
    border-left: 4px solid var(--success-green);
    background-color: rgba(46, 204, 113, 0.04);
    border-radius: 0 12px 12px 0;
    padding: 16px;
}

.dni-pending-box {
    margin-top: 18px;
    border-left: 4px solid var(--amarillo-gold);
    background-color: rgba(255, 204, 0, 0.04);
    border-radius: 0 12px 12px 0;
    padding: 16px;
}

/* ==========================================================================
   Responsive Adaptation
   ========================================================================== */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
        width: 240px;
        top: 0;
        bottom: auto;
        height: 100vh;
        max-height: 100vh;
        height: 100dvh;
        max-height: 100dvh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .main-layout {
        margin-left: 0;
        width: 100%;
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    body.sidebar-open {
        overflow: hidden;
    }

    body.sidebar-open .sidebar {
        touch-action: pan-y;
    }

    body.sidebar-open .main-layout {
        transform: none;
    }
}

@media (max-width: 768px) {
    .content-body {
        padding: 20px;
    }
    
    .topbar {
        padding: 0 20px;
    }
    
    .metrics-row {
        grid-template-columns: 1fr;
    }
    
    .topbar-title h1 {
        font-size: 16px;
    }

    .clase-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .clase-controls .btn, .clase-controls .badge {
        width: 100%;
        text-align: center;
        box-sizing: border-box;
    }

    .question-footer, .exam-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .question-footer .btn, .exam-footer .btn {
        width: 100%;
        text-align: center;
    }
}