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

body {
    font-family: Georgia, 'Times New Roman', serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
}

.header-icon {
    width: 50px;
    height: 50px;
    filter: brightness(0) invert(1);
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    font-family: Georgia, 'Times New Roman', serif;
}

.subtitle {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 1rem;
    opacity: 0.95;
}

/* Map Styles */
#map {
    flex: 1;
    width: 100%;
    position: relative;
}

/* Footer Styles */
footer {
    background: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    text-align: center;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.footer-icon {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

footer p {
    margin: 0;
    font-size: 0.9rem;
}

footer a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s;
}

footer a:hover {
    color: #5dade2;
}

/* Popup Styles - Hover Version */
.hover-popup .leaflet-popup-content-wrapper {
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    padding: 0;
    overflow: hidden;
}

.hover-popup .leaflet-popup-content {
    margin: 0;
    min-width: 280px;
    max-width: 320px;
}

.bird-hover-popup {
    padding: 0;
}

.bird-hover-popup .bird-photo {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.bird-hover-popup .bird-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: #2c3e50;
    margin: 0.75rem 1rem 0.75rem 1rem;
    border-bottom: 2px solid #667eea;
    padding-bottom: 0.5rem;
}

.bird-hover-popup .sighting-info {
    padding: 0 1rem 1rem 1rem;
}

.bird-hover-popup .sighting-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bird-hover-popup .info-row {
    font-size: 0.9rem;
    color: #34495e;
    line-height: 1.4;
}

.bird-hover-popup .info-row strong {
    color: #2c3e50;
    font-weight: 600;
}

.bird-hover-popup .location-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.bird-hover-popup .location-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Custom Marker Styles */
.bird-marker {
    background-color: #e74c3c;
    border: 3px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

/* Marker Cluster Styles */
.marker-cluster-small {
    background-color: rgba(110, 204, 57, 0.6);
}

.marker-cluster-small div {
    background-color: rgba(110, 204, 57, 0.8);
}

.marker-cluster-medium {
    background-color: rgba(241, 211, 87, 0.6);
}

.marker-cluster-medium div {
    background-color: rgba(241, 211, 87, 0.8);
}

.marker-cluster-large {
    background-color: rgba(253, 156, 115, 0.6);
}

.marker-cluster-large div {
    background-color: rgba(253, 156, 115, 0.8);
}

/* Loading Indicator */
.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    text-align: center;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    .header-icon {
        width: 35px;
        height: 35px;
    }

    .subtitle {
        font-size: 0.85rem;
    }

    .footer-icon {
        width: 30px;
        height: 30px;
    }

    footer p {
        font-size: 0.8rem;
    }

    .leaflet-popup-content {
        width: 250px !important;
    }

    .bird-popup img {
        height: 150px;
    }
}