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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 2rem;
    text-align: center;
}

img {
    max-width: 150px;
    margin-bottom: 1rem;
    border-radius: 50%;
}

h1 {
    color: #667eea;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #666;
    font-size: 1.1rem;
}

.nav-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 2rem;
}

.tab-btn {
    background: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: #667eea;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.tab-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.tab-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.content-section {
    display: none;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: fadeIn 0.5s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 {
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid #667eea;
    padding-bottom: 0.5rem;
}

h3 {
    color: #764ba2;
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

h4 {
    color: #000000;
    font-size: 1.2rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.process-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 5px solid #667eea;
    transition: transform 0.3s ease;
}

.process-card:hover {
    transform: translateX(5px);
}

.process-card h4 {
    margin-top: 0;
    color: #667eea;
}

.requirements-list {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1rem 0;
}

.requirements-list ul {
    list-style-position: inside;
    margin-left: 1rem;
}

.requirements-list li {
    margin: 0.8rem 0;
    padding-left: 0.5rem;
}

.architecture-diagram {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.layer {
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    border-left: 4px solid white;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.module-item {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

.traceability-table {
    overflow-x: auto;
    margin: 2rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

td {
    padding: 1rem;
    border-bottom: 1px solid #e0e0e0;
}

tr:hover {
    background: #f5f7fa;
}

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
    border-left: 5px solid #667eea;
    position: relative;
}

.timeline-item h4 {
    margin-top: 0;
}

.badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 0.2rem;
}

.badge-priority {
    background: #ff6b6b;
    color: white;
}

.badge-iso {
    background: #4ecdc4;
    color: white;
}

.badge-module {
    background: #95e1d3;
    color: #333;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .nav-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
    }
    
    .process-grid,
    .modules-grid {
        grid-template-columns: 1fr;
    }
    
    table {
        font-size: 0.9rem;
    }
    
    th, td {
        padding: 0.5rem;
    }
}