/* ============================================
   PANEL MODAL - FULLSCREEN IFRAME
   ============================================ */

.panel-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    z-index: 10000;
    animation: fadeIn 0.4s ease-out;
}

.panel-modal-overlay.active {
    display: flex;
    flex-direction: column;
}

.panel-modal-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: white;
}

.panel-modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 10;
}

.panel-modal-info h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.panel-modal-info p {
    font-size: 1.125rem;
    opacity: 0.95;
    font-weight: 500;
}

.panel-modal-close {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.panel-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.panel-modal-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--gray-100);
}

.panel-iframe-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: white;
    box-shadow: inset 0 4px 20px rgba(0, 0, 0, 0.1);
}

.panel-iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.panel-tour-controls {
    padding: 1.5rem 3rem;
    background: white;
    border-top: 2px solid var(--gray-200);
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
}

.panel-tour-btn {
    padding: 1.25rem 3rem;
    border-radius: var(--radius-full);
    font-weight: 800;
    font-size: 1.125rem;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.panel-tour-btn span {
    font-size: 1.5rem;
}

.panel-tour-btn:not(.secondary) {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg);
}

.panel-tour-btn:not(.secondary)::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.panel-tour-btn:not(.secondary):hover::before {
    width: 500px;
    height: 500px;
}

.panel-tour-btn:not(.secondary):hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.panel-tour-btn.secondary {
    background: white;
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
}

.panel-tour-btn.secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Loading State */
.panel-iframe-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1;
}

.panel-iframe-container iframe[src]:not([src=""]):not([src="about:blank"])~ ::before {
    display: none;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .panel-modal-header {
        padding: 1.5rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .panel-modal-info h2 {
        font-size: 1.5rem;
    }

    .panel-modal-info p {
        font-size: 1rem;
    }

    .panel-modal-close {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .panel-tour-controls {
        padding: 1rem;
        flex-direction: column;
    }

    .panel-tour-btn {
        width: 100%;
        justify-content: center;
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}