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

:root {
    --bg-color: #0b0f19;
    --card-bg: rgba(22, 28, 45, 0.65);
    --card-border: rgba(255, 255, 255, 0.07);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-blue: #3b82f6;
    --accent-indigo: #6366f1;
    --accent-cyan: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #6366f1 50%, #06b6d4 100%);
    --accent-gradient-hover: linear-gradient(135deg, #2563eb 0%, #4f46e5 50%, #0891b2 100%);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    --shadow-glow-active: 0 0 30px rgba(6, 182, 212, 0.3);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.05) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(99, 102, 241, 0.02) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Header principal */
header.main-header {
    width: 100%;
    padding: 2.5rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--card-border);
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
}

header.main-header h1 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.2rem;
    letter-spacing: -0.02em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

@media (max-width: 640px) {
    header.main-header h1 {
        font-size: 1.6rem;
    }
    header.main-header {
        padding: 1.5rem 1rem;
    }
}

/* Contenedor principal */
main.container {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

@media (max-width: 640px) {
    main.container {
        padding: 1.5rem 1rem;
    }
}

/* Barra de navegación de categorías secundarias (breadcrumbs o enlaces superiores) */
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(12px);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.btn-back:hover {
    color: var(--accent-cyan);
    transform: translateX(-4px);
}

.btn-back svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}

.nav-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-primary);
    background: linear-gradient(135deg, #ffffff 0%, #9ca3af 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (max-width: 640px) {
    .nav-bar {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
        padding: 1rem;
    }
    .nav-title {
        font-size: 1.2rem;
        order: -1;
    }
}

/* Dashboard Index Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.category-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 240px;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: var(--transition-fast);
}

.category-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.category-card:hover::before {
    opacity: 1;
}

.category-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    transition: var(--transition-fast);
}

.category-card:hover .category-icon {
    background: rgba(6, 182, 212, 0.2);
    color: #ffffff;
    border-color: rgba(6, 182, 212, 0.4);
    transform: scale(1.05);
}

.category-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-secondary);
}

.category-card:hover .category-badge {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
}

.category-body h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.category-body p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.category-footer {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent-cyan);
}

.category-footer svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
    transition: var(--transition-fast);
}

.category-card:hover .category-footer svg {
    transform: translateX(4px);
}

/* Diploma Grid */
.diploma-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.diploma-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.diploma-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.diploma-preview {
    position: relative;
    width: 100%;
    padding-top: 67%; /* Relación de aspecto del diploma estándar */
    background: #07090f;
    overflow: hidden;
    border-bottom: 1px solid var(--card-border);
}

.diploma-preview img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.diploma-card:hover .diploma-preview img {
    transform: scale(1.04);
}

.diploma-info {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
}

.diploma-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.diploma-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.diploma-institution {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.diploma-action {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.diploma-card:hover .diploma-action {
    color: var(--text-primary);
}

.diploma-action svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

/* Estadísticas Dashboard Rápido */
.quick-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 3rem;
    background: rgba(22, 28, 45, 0.4);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    backdrop-filter: blur(8px);
}

.stat-item {
    flex: 1 1 200px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    line-height: 1.1;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
}

/* Footer principal */
footer.main-footer {
    width: 100%;
    padding: 2rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--card-border);
    background: rgba(11, 15, 25, 0.95);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    margin-top: auto;
}

/* Visor Modal de Diplomas (Lightbox) */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 7, 12, 0.95);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
    backdrop-filter: blur(15px);
    padding: 1.5rem;
}

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

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 1010;
}

.lightbox-close:hover {
    background: var(--accent-gradient);
    border-color: transparent;
    transform: rotate(90deg);
}

.lightbox-close svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}

.lightbox-content {
    max-width: 95%;
    max-height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    border-radius: var(--radius-md);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), var(--shadow-glow-active);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    background: #000000;
}

.lightbox-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    display: block;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lightbox-image.loaded {
    opacity: 1;
}

.lightbox-caption {
    margin-top: 1.5rem;
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.25rem;
    text-align: center;
    max-width: 600px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 1005;
}

.lightbox-nav:hover {
    background: var(--accent-gradient);
    border-color: transparent;
}

.lightbox-prev {
    left: 2rem;
}

.lightbox-prev:hover {
    transform: translateY(-50%) translateX(-4px);
}

.lightbox-next {
    right: 2rem;
}

.lightbox-next:hover {
    transform: translateY(-50%) translateX(4px);
}

.lightbox-nav svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}

@media (max-width: 768px) {
    .lightbox-nav {
        top: auto;
        bottom: 1.5rem;
        transform: none;
        width: 44px;
        height: 44px;
    }
    .lightbox-prev {
        left: calc(50% - 60px);
    }
    .lightbox-prev:hover {
        transform: translateX(-4px);
    }
    .lightbox-next {
        right: calc(50% - 60px);
    }
    .lightbox-next:hover {
        transform: translateX(4px);
    }
    .lightbox-caption {
        margin-top: 1rem;
        font-size: 1.05rem;
        padding-bottom: 4.5rem; /* Espacio para botones de navegación */
    }
}