:root {
    --bg-primary: #0f1115;
    --bg-secondary: #1a1d24;
    --bg-tertiary: #232730;
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --border: #2d3748;
    --error: #ef4444;
    --cell-hover: rgba(59, 130, 246, 0.2);
    --cell-active: rgba(59, 130, 246, 0.4);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.sidebar {
    width: 350px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: 2px 0 10px rgba(0,0,0,0.2);
    z-index: 10;
    overflow-y: auto;
}

.logo {
    margin-bottom: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.25rem;
}

.logo p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.control-group {
    margin-bottom: 1.25rem;
}

.control-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.control-group select {
    width: 100%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23adb5bd%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem top 50%;
    background-size: 0.65rem auto;
}

.control-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.info-panel {
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 2rem;
}

.info-panel h3 {
    font-size: 0.9rem;
    color: var(--accent-hover);
    margin-bottom: 0.5rem;
}

.info-panel p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Status Panel */
.status-panel {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.status-header h3 {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-text {
    font-size: 0.8rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.progress-bar-container {
    width: 100%;
    height: 4px;
    background-color: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--accent), #10b981);
    transition: width 0.5s ease;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot.online { background-color: #10b981; box-shadow: 0 0 8px #10b981; }
.dot.offline { background-color: var(--error); }
.dot.processing { background-color: #f59e0b; box-shadow: 0 0 8px #f59e0b; }
.dot.scanning {
    background-color: var(--accent);
    animation: pulse 1s infinite alternate;
}

@keyframes pulse {
    from { opacity: 0.4; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1.1); }
}

/* Log Panel */
.log-panel {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    max-height: 200px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.log-header h3 {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.log-header button {
    background: transparent;
    border: none;
    color: var(--accent);
    font-size: 0.7rem;
    cursor: pointer;
    font-weight: 500;
}

.log-content {
    padding: 0.5rem;
    overflow-y: auto;
    font-family: monospace;
    font-size: 0.7rem;
    flex: 1;
}

.log-entry {
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
    word-break: break-all;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    padding-bottom: 0.25rem;
}

.log-entry.success { color: #10b981; }
.log-entry.error { color: var(--error); }

/* About Panel */
.about-panel {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.about-panel p {
    margin-bottom: 0.5rem;
}

.about-panel a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.about-panel a:hover {
    text-decoration: underline;
}

.about-panel .data-source {
    margin-top: 1rem;
    opacity: 0.7;
    font-style: italic;
}

/* Hover Grid */
.top-grid-area {
    width: 100%;
    margin-bottom: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.grid-container {
    width: 100%;
    overflow-x: auto;
    background-color: var(--bg-tertiary);
}

table {
    border-collapse: collapse;
    font-size: 0.75rem;
    min-width: max-content;
}

th, td {
    padding: 0.4rem 0.6rem;
    text-align: center;
    border: 1px solid var(--border);
}

th {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 2;
}

td:first-child, th:first-child {
    position: sticky;
    left: 0;
    background-color: var(--bg-secondary);
    font-weight: 600;
    z-index: 3;
}

td.hoverable {
    cursor: crosshair;
    transition: background-color 0.15s, transform 0.1s;
}

td.hoverable:hover {
    background-color: var(--cell-hover);
    transform: scale(1.05);
    box-shadow: inset 0 0 0 1px var(--accent);
    z-index: 5;
    position: relative;
}

td.hoverable.active {
    background-color: var(--cell-active);
    color: white;
    box-shadow: inset 0 0 0 2px var(--accent);
}

td.hoverable.disabled {
    cursor: not-allowed;
    background-color: transparent;
    background-image: repeating-linear-gradient(
        45deg,
        rgba(255,255,255,0.015),
        rgba(255,255,255,0.015) 4px,
        transparent 4px,
        transparent 8px
    );
    color: rgba(173, 181, 189, 0.25);
    opacity: 0.5;
}

td.hoverable.disabled:hover {
    background-color: transparent;
    transform: none;
    box-shadow: none;
}

.param-hint {
    margin-top: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
    line-height: 1.3;
    opacity: 0.7;
}

/* Main Content */
.main-content {
    flex: 1;
    background-color: var(--bg-primary);
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow: hidden;
}

.image-viewer {
    flex: 1;
    width: 100%;
    position: relative;
    border-radius: var(--radius-lg);
    background-color: var(--bg-tertiary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.placeholder {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.placeholder.active {
    opacity: 1;
}

.loading-spinner {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s ease-in-out infinite;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}

.loading-spinner.active {
    opacity: 1;
}

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

#modelImage {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.3s ease;
}

#modelImage.loaded {
    opacity: 1;
}

.error-msg {
    position: absolute;
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.error-msg.active {
    opacity: 1;
}