:root {
    --primary-color: #005f73;
    --secondary-color: #0a9396;
    --accent-color: #94d2bd;
    --text-color: #333;
    --bg-color: #f4f4f9;
    --card-bg: #ffffff;
    --footer-bg: #264653;
    --footer-text: #e9c46a;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --spacing-unit: 1rem;
    --container-width: 1200px;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

/* Header */
header {
    background-color: var(--card-bg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.logo img {
    height: 50px;
    width: auto;
}

nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

nav a {
    color: var(--text-color);
    font-weight: 500;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 4rem 1rem;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Main Content */
main {
    max-width: var(--container-width);
    margin: 2rem auto;
    padding: 0 1rem;
}

section {
    margin-bottom: 4rem;
}

h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

/* Cards Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

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

.card h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* Data Table */
.data-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.data-item {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
    border: 1px solid #eee;
    font-weight: bold;
    color: var(--primary-color);
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: white;
    padding: 2rem 1rem;
    text-align: center;
    margin-top: auto;
}

footer p {
    opacity: 0.8;
    font-size: 0.9rem;
}

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

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }
}

/* Data Table Styles */
.data-table-container {
    overflow-x: auto;
    max-width: 1000px;
    margin: 2rem auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    background: var(--card-bg);
}

table {
    width: 100%;
    border-collapse: collapse;
}

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

th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

tr:hover {
    background-color: #f9f9f9;
}

td a {
    color: var(--secondary-color);
    font-weight: 500;
}