:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --primary: #0056b3;
    --success: #22c55e;
    --danger: #ef4444;
    --neutral: #f59e0b;
    --border-color: #e5e7eb;
    --radius: 10px;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    padding: 0.60rem 0;
}

.nav-container {
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
}

.logo {
    text-decoration: none;
    color: var(--primary);
    font-weight: 600;
    font-size: 1.3rem;
}

.search-form {
    display: flex;
    align-items: center;
}

.search-form input[type="text"] {
    width: 220px;
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.95rem;
}

.search-form button {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem 0.9rem;
    margin-left: 0.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s ease-in-out;
}

.search-form button:hover {
    background-color: #004092;
}