body {
    font-family: 'Roboto', sans-serif;
    background-color: #fafafa;
    color: #1f2937;
    margin: 0;
    padding: 30px 20px;
    min-height: 100vh;
    line-height: 1.6;
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #000;
    color: #fff;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
    border-radius: 0 0 4px 0;
}

.skip-link:focus {
    top: 0;
}

/* Visually hidden but accessible to screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.container {
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 30px;
}

header {
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.75rem;
    font-weight: 700;
    color: #111827;
    margin: 0 0 12px 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

header p {
    font-size: 1.125rem;
    color: #6b7280;
    margin: 0;
    font-weight: 400;
}

.form-group {
    margin: 30px 0;
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.dropdown-select {
    padding: 12px 16px;
    font-size: 16px;
    font-family: 'Roboto', sans-serif;
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    background-color: #ffffff;
    color: #1f2937;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    min-width: 200px;
}

.dropdown-select:hover {
    border-color: #2563eb;
    box-shadow: 0 2px 4px 0 rgba(37, 99, 235, 0.1);
}

.dropdown-select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2), 0 2px 4px 0 rgba(37, 99, 235, 0.1);
}

.dropdown-select:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

#map {
    height: 600px;
    width: 100%;
    margin-top: 30px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    background-color: #ffffff;
    transition: box-shadow 0.2s ease;
}

#map:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

#map:focus {
    outline: 3px solid #2563eb;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2), 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

#map-status {
    margin-top: 16px;
    font-size: 14px;
    color: #6b7280;
}

/* Loading, error, and empty state messages */
.loading-message,
.error-message,
.empty-state-message {
    padding: 20px 24px;
    margin: 24px 0;
    border-radius: 8px;
    text-align: center;
    font-size: 16px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s ease;
}

.loading-message {
    background-color: #eff6ff;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.error-message {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.empty-state-message {
    background-color: #fffbeb;
    color: #92400e;
    border: 1px solid #fcd34d;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    body {
        padding: 20px 10px;
    }

    .container {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    .form-group {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
        margin: 25px 0;
    }

    .dropdown-select {
        width: 100%;
        min-width: unset;
    }

    #map {
        height: 400px;
        margin-top: 25px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 15px 10px;
    }

    .container {
        padding: 25px 15px;
    }

    header h1 {
        font-size: 1.75rem;
    }

    #map {
        height: 300px;
    }
}

footer {
    margin-top: 50px;
    padding-top: 30px;
    font-size: 14px;
    color: #6b7280;
    border-top: 1px solid #e5e7eb;
    line-height: 1.8;
}

footer p {
    margin: 8px 0;
}

footer a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

footer a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

footer a:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
    border-radius: 2px;
}