/* ======================================
   POISSON SIMULATION APP STYLES
   ====================================== */

.poisson-app {
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 100%);
    color: #eee;
    font-family: system-ui, -apple-system, sans-serif;
}

/* Header */
.poisson-header {
    padding: 20px 30px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid #333;
    display: flex;
    align-items: center;
    gap: 20px;
}

.poisson-header h1 {
    margin: 0;
    font-size: 1.5rem;
    color: #00d4ff;
}

.poisson-header .subtitle {
    margin: 0;
    color: #888;
    font-size: 0.9rem;
}

.back-btn {
    background: transparent;
    border: 1px solid #555;
    color: #aaa;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: #333;
    color: #fff;
    border-color: #00d4ff;
}

/* Main Layout */
.poisson-main {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 20px;
    padding: 20px;
    min-height: calc(100vh - 100px);
}

@media (max-width: 1024px) {
    .poisson-main {
        grid-template-columns: 1fr;
    }
}

/* Control Panel */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
}

/* Form Styles */
.poisson-form {
    background: rgba(30, 30, 50, 0.8);
    border-radius: 8px;
    padding: 15px;
    border: 1px solid #333;
}

.poisson-form h3 {
    margin: 0 0 15px;
    color: #00d4ff;
    font-size: 1.1rem;
}

.form-section {
    margin-bottom: 10px;
    border: 1px solid #333;
    border-radius: 6px;
    overflow: hidden;
}

.section-header {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
    border: none;
    color: #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background 0.3s ease;
}

.section-header:hover {
    background: rgba(0, 212, 255, 0.1);
}

.section-header .toggle {
    color: #00d4ff;
    font-weight: bold;
}

.section-content {
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #aaa;
    font-size: 0.85rem;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 8px 12px;
    background: #1a1a2e;
    border: 1px solid #444;
    border-radius: 4px;
    color: #eee;
    font-size: 0.9rem;
    box-sizing: border-box;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus {
    border-color: #00d4ff;
    outline: none;
}

.form-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #333;
    cursor: pointer;
    -webkit-appearance: none;
}

.form-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #00d4ff;
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.form-group.checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-group.checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Boundary Selector */
.boundary-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5px;
}

.boundary-btn {
    padding: 8px;
    background: #2a2a4a;
    border: 1px solid #444;
    border-radius: 4px;
    color: #aaa;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.boundary-btn:hover {
    background: #3a3a5a;
}

.boundary-btn.selected {
    background: #00d4ff;
    color: #000;
    border-color: #00d4ff;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn-preview,
.btn-submit {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-preview {
    background: #2a2a4a;
    color: #00d4ff;
    border: 1px solid #00d4ff;
}

.btn-preview:hover:not(:disabled) {
    background: rgba(0, 212, 255, 0.2);
}

.btn-submit {
    background: linear-gradient(135deg, #00d4ff, #00ff88);
    color: #000;
    font-weight: bold;
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-preview:disabled,
.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Simulation History */
.simulation-history {
    background: rgba(30, 30, 50, 0.8);
    border-radius: 8px;
    padding: 15px;
    border: 1px solid #333;
}

.simulation-history h3 {
    margin: 0 0 15px;
    color: #00d4ff;
    font-size: 1rem;
}

.no-simulations {
    color: #666;
    text-align: center;
    padding: 20px;
}

.simulation-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 300px;
    overflow-y: auto;
}

.simulation-item {
    padding: 12px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    margin-bottom: 8px;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.simulation-item:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: #333;
}

.simulation-item.selected {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.15);
}

.sim-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.sim-name {
    font-weight: 500;
    color: #eee;
    font-size: 0.9rem;
}

.sim-details {
    display: flex;
    gap: 15px;
    font-size: 0.8rem;
    color: #888;
}

.delete-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    color: #666;
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 4px;
    opacity: 0;
    transition: all 0.3s ease;
}

.simulation-item:hover .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    background: #ff6b6b;
    color: #fff;
}

/* Status Badges */
.status {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    text-transform: uppercase;
}

.status-completed { background: rgba(0, 255, 136, 0.2); color: #00ff88; }
.status-running { background: rgba(255, 193, 7, 0.2); color: #ffc107; }
.status-failed { background: rgba(255, 107, 107, 0.2); color: #ff6b6b; }
.status-pending { background: rgba(150, 150, 150, 0.2); color: #999; }

/* Visualization Panel */
.visualization-panel {
    display: flex;
    flex-direction: column;
    background: rgba(30, 30, 50, 0.8);
    border-radius: 8px;
    border: 1px solid #333;
    overflow: hidden;
}

/* View Tabs */
.view-tabs {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid #333;
}

.tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: #888;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
}

.tab:hover:not(:disabled) {
    color: #eee;
    background: rgba(255, 255, 255, 0.05);
}

.tab.active {
    color: #00d4ff;
    border-bottom-color: #00d4ff;
}

.tab:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Viewer Container */
.viewer-container {
    flex: 1;
    position: relative;
    min-height: 500px;
}

.mesh-viewer-3d,
.solution-viewer,
.animation-player {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.mesh-viewer-3d canvas,
.solution-viewer .canvas-container canvas,
.animation-player .canvas-container canvas {
    flex: 1;
}

.canvas-container {
    flex: 1;
    position: relative;
}

/* Viewer Controls */
.viewer-controls {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 10px 15px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid #333;
}

.viewer-controls label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #aaa;
    font-size: 0.85rem;
    cursor: pointer;
}

.viewer-controls input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.viewer-controls .info {
    margin-left: auto;
    color: #666;
    font-size: 0.8rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.control-group input[type="range"] {
    width: 100px;
}

.view-mode-toggle {
    display: flex;
    gap: 2px;
    background: #1a1a2e;
    border-radius: 4px;
    overflow: hidden;
}

.view-mode-toggle button {
    padding: 6px 12px;
    background: transparent;
    border: none;
    color: #888;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-mode-toggle button.active {
    background: #00d4ff;
    color: #000;
}

/* Colorbar */
.colorbar {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 25px;
    height: 200px;
    display: flex;
    flex-direction: column;
}

.colorbar-gradient {
    flex: 1;
    display: flex;
    flex-direction: column-reverse;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid #444;
}

.colorbar-labels {
    display: flex;
    flex-direction: column-reverse;
    justify-content: space-between;
    padding-left: 30px;
    margin-top: -200px;
    height: 200px;
    font-size: 0.7rem;
    color: #aaa;
}

/* Viewer Help */
.viewer-help {
    padding: 8px 15px;
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid #333;
    color: #666;
    font-size: 0.8rem;
    text-align: center;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: space-around;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid #333;
}

.stat {
    text-align: center;
}

.stat .label {
    display: block;
    color: #666;
    font-size: 0.75rem;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.stat .value {
    color: #00d4ff;
    font-size: 1rem;
    font-weight: 500;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 26, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid #333;
    border-top-color: #00d4ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay p {
    margin-top: 15px;
    color: #888;
}

/* Placeholder */
.placeholder {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #666;
    text-align: center;
    padding: 40px;
}

.placeholder p {
    margin: 5px 0;
}

/* Animation Controls */
.animation-controls {
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid #333;
}

.playback-controls {
    display: flex;
    gap: 5px;
}

.playback-controls button {
    width: 40px;
    height: 40px;
    background: #2a2a4a;
    border: 1px solid #444;
    border-radius: 4px;
    color: #eee;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.playback-controls button:hover {
    background: #3a3a5a;
    border-color: #00d4ff;
}

.frame-info {
    color: #888;
    font-size: 0.85rem;
}

.loop-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #aaa;
    font-size: 0.85rem;
}

.control-row {
    display: flex;
    gap: 20px;
    margin-top: 10px;
}

.timeline-slider {
    width: 100% !important;
}