:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 2rem;
    padding: 1rem;
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.breadcrumb .separator {
    margin: 0 0.5rem;
    color: var(--text-secondary);
}

.breadcrumb .current {
    color: var(--text-secondary);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
}

.hero-section h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* Page Header */
.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 1.5rem;
    font-weight: 600;
    font-size: 1.25rem;
    color: white;
}

.card-header.actualmente {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-header.propuesta {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card-header.nucleos {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card-header h3 {
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.card-body h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.card-body p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Version Cards */
.version-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.version-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.version-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.feature-list {
    list-style: none;
    margin: 1.5rem 0;
    flex: 1;
}

.feature-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Grid Container */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.grid-card {
    height: 100%;
}

/* List Container */
.list-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.list-card {
    width: 100%;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
}

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

.btn-secondary:hover {
    background-color: #475569;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-actualmente {
    background-color: #667eea;
    color: white;
}

.badge-propuesta {
    background-color: #f5576c;
    color: white;
}

.badge-nucleos {
    background-color: #00f2fe;
    color: #1e293b;
}

.codigo-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-right: 0.5rem;
}

.obligatorio-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--success-color);
    color: white;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.no-obligatorio-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--danger-color);
    color: white;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Stats Container */
.stats-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem 0.75rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stat-badge strong {
    color: var(--primary-color);
    font-weight: 700;
}

/* Domain and Results Text */
.dominio-text,
.resultado-text,
.indicador-text {
    color: var(--text-primary);
    line-height: 1.6;
    margin: 1rem 0;
}

.dominio-subtitle,
.resultado-subtitle {
    background-color: var(--bg-color);
    padding: 1rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--primary-color);
    margin: 1rem 0;
}

/* Indicadores */
.indicadores-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.indicador-card {
    border-left: 4px solid var(--primary-color);
}

.indicador-card.sin-curso {
    border-left-color: var(--warning-color);
    background-color: #fffbeb;
}

.indicador-header {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.curso-info {
    margin-top: 1rem;
}

.curso-badge {
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.95rem;
}

.curso-asignado {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.curso-no-asignado {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

/* Flow Diagram */
.info-section {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    margin-top: 3rem;
}

.info-section h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.flow-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.flow-item {
    text-align: center;
}

.flow-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto 0.5rem;
}

.flow-item p {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.flow-arrow {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: bold;
    align-self: flex-start;
    margin-top: 15px;
}

/* Back Button */
.back-button {
    margin-top: 2rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    background-color: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
}

/* Footer */
.footer {
    background-color: var(--card-bg);
    padding: 2rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section h2 {
        font-size: 2rem;
    }

    .version-cards {
        grid-template-columns: 1fr;
    }

    .grid-container {
        grid-template-columns: 1fr;
    }

    .flow-diagram {
        flex-direction: column;
    }

    .flow-arrow {
        transform: rotate(90deg);
    }

    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
}