/* Reset e Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Navigation */
nav {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 99;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    list-style: none;
}

.nav-menu a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    background: #1e3c72;
    color: white;
    transform: translateY(-2px);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    background: white;
    min-height: calc(100vh - 200px);
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

/* Typography */
h2 {
    color: #1e3c72;
    font-size: 2rem;
    margin: 2rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #e74c3c;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 50px;
    height: 3px;
    background: #1e3c72;
}

h3 {
    color: #2c3e50;
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem 0;
}

h4 {
    color: #34495e;
    font-size: 1.2rem;
    margin: 1rem 0 0.5rem 0;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    text-align: justify;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tr:hover {
    background-color: #f8f9fa;
}

/* Images */
.image-container {
    text-align: center;
    margin: 2rem 0;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.image-container img:hover {
    transform: scale(1.02);
}

/* Cards */
.card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    border-left: 4px solid #e74c3c;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.card h3 {
    color: #1e3c72;
    margin-top: 0;
}

/* Highlight Boxes */
.highlight-box {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    text-align: center;
}

.highlight-box h3 {
    color: white;
    margin-top: 0;
}

/* Lists */
ul, ol {
    margin: 1rem 0 1rem 2rem;
}

li {
    margin-bottom: 0.5rem;
}

/* Strong/Bold text */
strong {
    color: #1e3c72;
    font-weight: 600;
}

/* Links */
a {
    color: #1e3c72;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #e74c3c;
    text-decoration: underline;
}

/* Footer */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    main {
        padding: 1rem;
        margin: 0 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .header-content {
        padding: 0 1rem;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    main {
        margin: 0 0.5rem;
        padding: 0.5rem;
    }
}

/* Animation for smooth loading */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card, .image-container {
    animation: fadeInUp 0.6s ease-out;
}

/* SEO-friendly print styles */
@media print {
    header, nav, footer {
        display: none;
    }

    main {
        box-shadow: none;
        margin: 0;
        padding: 0;
    }

    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}