/* ==========================================
   SOLAR-WALK PAGE SPECIFIC STYLES
   ========================================== */

.nasa-video-section {
    background: var(--glass-bg);
    border-radius: 24px;
    padding: 2.5rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    margin-bottom: 4rem;
    box-shadow: var(--glass-shadow);
}

.controls-panel {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.control-btn {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(79, 172, 254, 0.3);
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(79, 172, 254, 0.4);
    filter: brightness(1.1);
}

.control-btn:active {
    transform: translateY(1px);
}

.control-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    filter: grayscale(1);
}

.video-container {
    width: 100%;
    height: 150px;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    background: radial-gradient(ellipse at center, rgba(15, 15, 35, 0.8) 0%, rgba(0, 0, 0, 0.9) 100%);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 50px rgba(0,0,0,0.8);
    transition: height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.video-container.loaded {
    height: 500px;
}

.video-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.video-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 12px;
}

.loading-placeholder {
    color: var(--text-muted);
    text-align: center;
    padding: 2rem;
    font-size: 1.1rem;
}

.video-info {
    margin-top: 2rem;
    text-align: center;
}

.video-title {
    font-size: 1.8rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
    font-weight: 700;
}

.video-description {
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
}

/* ==========================================
   PLANET SELECTION PANEL
   ========================================== */
.planet-selection {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 4rem;
}

@media (min-width: 992px) {
    .planet-selection {
        grid-template-columns: 350px 1fr;
    }
}

.planet-grid {
    background: var(--glass-bg);
    border-radius: 24px;
    padding: 2.5rem;
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    height: fit-content;
}

.planet-grid h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-cyan);
    font-size: 1.8rem;
}

.planet-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
}

.planet-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 1rem 0.5rem;
    border-radius: 16px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.planet-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.planet-btn.active {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.2) 0%, rgba(0, 242, 254, 0.2) 100%);
    border-color: var(--accent-cyan);
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
    color: #fff;
}

.planet-icon {
    font-size: 2.2rem;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
    transition: transform 0.3s ease;
}

.planet-btn:hover .planet-icon {
    transform: scale(1.1);
}

/* ==========================================
   PLANET INFO PANEL
   ========================================== */
.planet-info {
    background: var(--glass-bg);
    border-radius: 24px;
    padding: 2.5rem;
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.planet-info h2 {
    color: var(--accent-purple);
    margin-bottom: 2rem;
    font-size: 1.8rem;
    text-align: center;
}

.planet-details {
    display: none;
}

.planet-details.active {
    display: block;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.planet-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.planet-header .planet-icon {
    font-size: 4rem;
}

.planet-header h3 {
    font-size: 2.5rem;
    color: #fff;
    font-weight: 800;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.info-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 16px;
    border-left: 4px solid var(--accent-blue);
    transition: var(--transition);
}

.info-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(5px);
}

.info-item h4 {
    color: var(--accent-cyan);
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.info-item p {
    color: var(--text-main);
    line-height: 1.6;
}

.info-item img {
    width: 100%;
    border-radius: 12px;
    margin-top: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    font-size: 1.2rem;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(79, 172, 254, 0.3);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 15px;
    vertical-align: middle;
}

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

.error {
    color: #ff6b6b;
    background: rgba(255, 107, 107, 0.1);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid #ff6b6b;
    margin: 1.5rem 0;
    text-align: center;
}

.nasa-link {
    display: inline-block;
    margin-top: 1.5rem;
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
    border-radius: 12px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.2);
}

.nasa-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 172, 254, 0.4);
    filter: brightness(1.1);
}

.apod-date {
    color: var(--accent-purple);
    font-size: 1rem;
    margin-top: 1.5rem;
    text-align: center;
    font-weight: 500;
}

.apod-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    text-align: center;
}

.fallback-media {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 1.2rem;
    text-align: center;
    padding: 2rem;
    flex-direction: column;
}

audio {
    border-radius: 12px;
    margin: 20px auto;
    display: block;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
    .nasa-video-section, .planet-grid, .planet-info {
        padding: 1.5rem;
    }
    
    .video-container.loaded {
        height: 300px;
    }
    
    .planet-header h3 {
        font-size: 2rem;
    }
    
    .planet-buttons {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (max-width: 480px) {
    .planet-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}