:root {
    --md-sys-color-primary: #006495;
    --md-sys-color-surface: #fafcff;
    --md-sys-color-surface-container: #f3f5f8;
    --md-sys-color-on-surface: #191c1e;
    --md-sys-color-outline: #6f797c;
}

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

body {
    font-family: 'Google Sans', sans-serif;
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    flex: 1;
}

h1 {
    font-size: 2.5rem;
    font-weight: 500;
    margin-bottom: 2rem;
    color: var(--md-sys-color-primary);
    text-align: center;
}

.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: center;
    justify-content: space-between;
}

.search-box {
    flex: 1;
    max-width: 400px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-box .material-icons {
    position: absolute;
    left: 12px;
    color: var(--md-sys-color-outline);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: 24px;
    font-family: 'Google Sans', sans-serif;
    font-size: 0.95rem;
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    transition: border-color 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--md-sys-color-primary);
}

.sort-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border: none;
    border-radius: 24px;
    background: var(--md-sys-color-primary);
    color: white;
    font-family: 'Google Sans', sans-serif;
    font-size: 0.95rem;
    cursor: pointer;
    transition: opacity 0.2s;
}

.sort-button:hover {
    opacity: 0.9;
}

.card {
    background-color: var(--md-sys-color-surface-container);
    border-radius: 28px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

th {
    text-align: left;
    padding: 1rem;
    font-weight: 500;
    color: var(--md-sys-color-primary);
    border-bottom: 1px solid var(--md-sys-color-outline);
}

td {
    padding: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

tr:last-child td {
    border-bottom: none;
}

.download-link {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 20px;
    transition: background-color 0.2s;
}

.download-link:hover {
    background-color: rgba(0, 100, 149, 0.08);
}

.material-icons {
    font-size: 24px;
}

footer {
    text-align: center;
    padding: 1rem;
    color: var(--md-sys-color-outline);
    font-size: 0.9rem;
}

footer a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    transition: opacity 0.2s;
}

footer a:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .container {
        margin: 1rem auto;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: none;
    }
    
    .card {
        padding: 1rem;
        border-radius: 20px;
    }
    
    table {
        font-size: 0.9rem;
    }
    
    th, td {
        padding: 0.75rem;
    }
}