/**
 * Protein Viewer - Modern UI with bimovis.com design system
 * Primary color: #00AEEF (Cyan)
 * Style: Modern, minimalist, accessible
 * @version 2.0
 */

:root {
    --bimovis-primary: #00AEEF;
    --bimovis-primary-dark: #0095D0;
    --bimovis-primary-light: #33BFEF;
    --bimovis-bg: #FFFFFF;
    --bimovis-bg-light: #F8F9FA;
    --bimovis-text: #333333;
    --bimovis-text-light: #666666;
    --bimovis-border: #E0E0E0;
    --bimovis-success: #28A745;
    --bimovis-warning: #FFC107;
    --bimovis-error: #DC3545;
    --bimovis-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --bimovis-shadow-hover: 0 4px 16px rgba(0, 174, 239, 0.2);
    --bimovis-radius: 8px;
    --bimovis-transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

/* Main Container */
#protein-viewer-container {
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--bimovis-text);
    line-height: 1.6;
}

/* Header Section */
.viewer-header {
    text-align: center;
    margin-bottom: 30px;
}

.viewer-header h2 {
    color: var(--bimovis-primary);
    font-size: 2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.viewer-header p {
    color: var(--bimovis-text-light);
    font-size: 1.1rem;
}

/* PDB Form */
#pdb-form {
    background: var(--bimovis-bg);
    padding: 25px;
    border-radius: var(--bimovis-radius);
    box-shadow: var(--bimovis-shadow);
    margin-bottom: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    justify-content: center;
}

#pdb-form label {
    font-weight: 600;
    color: var(--bimovis-text);
    font-size: 0.95rem;
}

#pdb-form input[type="text"] {
    padding: 10px 15px;
    width: 200px;
    border: 2px solid var(--bimovis-border);
    border-radius: var(--bimovis-radius);
    font-size: 1rem;
    transition: var(--bimovis-transition);
    text-transform: uppercase;
}

#pdb-form input[type="text"]:focus {
    outline: none;
    border-color: var(--bimovis-primary);
    box-shadow: 0 0 0 3px rgba(0, 174, 239, 0.1);
}

#pdb-form input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    accent-color: var(--bimovis-primary);
    cursor: pointer;
}

#pdb-form button {
    padding: 10px 25px;
    background: linear-gradient(135deg, var(--bimovis-primary) 0%, var(--bimovis-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--bimovis-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--bimovis-transition);
    box-shadow: var(--bimovis-shadow);
}

#pdb-form button:hover {
    transform: translateY(-2px);
    box-shadow: var(--bimovis-shadow-hover);
}

#pdb-form button:active {
    transform: translateY(0);
}

/* Quick Presets */
.preset-container {
    background: var(--bimovis-bg-light);
    padding: 20px;
    border-radius: var(--bimovis-radius);
    margin-bottom: 30px;
}

.preset-container h3 {
    color: var(--bimovis-text);
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.preset-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.preset-btn {
    flex: 1;
    min-width: 200px;
    padding: 15px 20px;
    background: var(--bimovis-bg);
    border: 2px solid var(--bimovis-border);
    border-radius: var(--bimovis-radius);
    cursor: pointer;
    transition: var(--bimovis-transition);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
}

.preset-btn:hover {
    border-color: var(--bimovis-primary);
    box-shadow: var(--bimovis-shadow);
}

.preset-btn.active {
    background: var(--bimovis-primary);
    color: white;
    border-color: var(--bimovis-primary);
    box-shadow: var(--bimovis-shadow-hover);
}

.preset-btn .preset-icon {
    font-size: 1.8rem;
}

.preset-btn .preset-info {
    flex: 1;
}

.preset-btn .preset-name {
    display: block;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 4px;
}

.preset-btn .preset-desc {
    display: block;
    font-size: 0.85rem;
    opacity: 0.8;
}

.preset-btn.active .preset-desc {
    opacity: 1;
}

/* Miew Viewer Container */
#miew-viewer {
    width: 100%;
    height: 600px;
    border: 2px solid var(--bimovis-border);
    border-radius: var(--bimovis-radius);
    background: var(--bimovis-bg);
    margin-bottom: 30px;
    box-shadow: var(--bimovis-shadow);
    overflow: hidden;
}

/* Object Cards Grid */
#protein-object-container {
    margin-bottom: 30px;
}

.object-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.object-card {
    background: var(--bimovis-bg);
    border: 2px solid var(--bimovis-border);
    border-radius: var(--bimovis-radius);
    padding: 20px;
    box-shadow: var(--bimovis-shadow);
    transition: var(--bimovis-transition);
}

.object-card:hover {
    box-shadow: var(--bimovis-shadow-hover);
    transform: translateY(-2px);
}

.object-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--bimovis-bg-light);
}

.object-icon {
    font-size: 1.8rem;
}

.object-name {
    flex: 1;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--bimovis-text);
}

.object-type {
    background: var(--bimovis-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Style Selector */
.style-selector {
    margin-bottom: 20px;
}

.style-selector label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--bimovis-text);
    font-size: 0.9rem;
}

.style-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.style-btn {
    padding: 10px 8px;
    background: var(--bimovis-bg-light);
    border: 2px solid var(--bimovis-border);
    border-radius: var(--bimovis-radius);
    cursor: pointer;
    transition: var(--bimovis-transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
}

.style-btn:hover {
    background: var(--bimovis-bg);
    border-color: var(--bimovis-primary);
    transform: scale(1.05);
}

.style-btn.active {
    background: var(--bimovis-primary);
    color: white;
    border-color: var(--bimovis-primary);
    box-shadow: 0 2px 8px rgba(0, 174, 239, 0.3);
}

.style-icon {
    font-size: 1.5rem;
}

.style-label {
    font-weight: 500;
    text-align: center;
}

/* Color Selector */
.color-selector {
    margin-bottom: 10px;
}

.color-selector label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--bimovis-text);
    font-size: 0.9rem;
}

.color-select {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--bimovis-border);
    border-radius: var(--bimovis-radius);
    font-size: 0.95rem;
    background: var(--bimovis-bg);
    cursor: pointer;
    transition: var(--bimovis-transition);
}

.color-select:hover {
    border-color: var(--bimovis-primary);
}

.color-select:focus {
    outline: none;
    border-color: var(--bimovis-primary);
    box-shadow: 0 0 0 3px rgba(0, 174, 239, 0.1);
}

/* Render Controls */
.render-controls {
    background: var(--bimovis-bg);
    padding: 25px;
    border-radius: var(--bimovis-radius);
    box-shadow: var(--bimovis-shadow);
    margin-bottom: 30px;
    text-align: center;
}

.render-controls h3 {
    color: var(--bimovis-text);
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

#render-button {
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--bimovis-success) 0%, #218838 100%);
    color: white;
    border: none;
    border-radius: var(--bimovis-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--bimovis-transition);
    box-shadow: var(--bimovis-shadow);
    margin-right: 10px;
}

#render-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.3);
}

#download-button {
    padding: 12px 30px;
    background: var(--bimovis-primary);
    color: white;
    border: none;
    border-radius: var(--bimovis-radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    transition: var(--bimovis-transition);
    box-shadow: var(--bimovis-shadow);
}

#download-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--bimovis-shadow-hover);
}

/* Render Output */
#render-output {
    background: var(--bimovis-bg);
    padding: 25px;
    border-radius: var(--bimovis-radius);
    box-shadow: var(--bimovis-shadow);
    text-align: center;
}

#rendered-image {
    display: none;
    max-width: 100%;
    height: auto;
    border-radius: var(--bimovis-radius);
    margin-top: 20px;
    box-shadow: var(--bimovis-shadow);
}

/* Info Messages */
.info-message {
    background: var(--bimovis-bg-light);
    color: var(--bimovis-text-light);
    padding: 15px 20px;
    border-radius: var(--bimovis-radius);
    border-left: 4px solid var(--bimovis-warning);
    margin: 20px 0;
}

/* Loading Overlay */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

#loading-overlay p {
    color: white;
    font-size: 1.2rem;
    margin-top: 20px;
    font-weight: 600;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--bimovis-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast Notifications */
.toast-message {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bimovis-text);
    color: white;
    padding: 15px 30px;
    border-radius: var(--bimovis-radius);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    font-weight: 600;
    z-index: 10000;
    transition: bottom 0.3s ease;
}

.toast-message.show {
    bottom: 30px;
}

/* Material Selector (hidden for now) */
#protein-material-select {
    display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    #protein-viewer-container {
        padding: 0 15px;
        margin: 20px auto;
    }

    #pdb-form {
        flex-direction: column;
        align-items: stretch;
    }

    #pdb-form input[type="text"] {
        width: 100%;
    }

    .preset-buttons {
        flex-direction: column;
    }

    .preset-btn {
        min-width: 100%;
    }

    .object-grid {
        grid-template-columns: 1fr;
    }

    .style-buttons {
        grid-template-columns: repeat(3, 1fr);
    }

    #miew-viewer {
        height: 400px;
    }
}

@media (max-width: 480px) {
    .style-buttons {
        grid-template-columns: repeat(2, 1fr);
    }

    .style-btn {
        font-size: 0.7rem;
    }

    .style-icon {
        font-size: 1.2rem;
    }
}

/* Accessibility */
button:focus,
input:focus,
select:focus {
    outline: 2px solid var(--bimovis-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    #pdb-form,
    #protein-object-container,
    .render-controls {
        display: none;
    }

    #miew-viewer,
    #rendered-image {
        page-break-inside: avoid;
    }
}