/* Neuroseum - Dark Clinical Theme */

/* =========================================
   CSS Variables & Base Styles
   ========================================= */
:root {
    /* Color Palette - Dark Clinical Theme */
    --color-bg-primary: #0a0e14;
    --color-bg-secondary: #121820;
    --color-bg-tertiary: #1a2332;
    --color-bg-elevated: #222d3d;
    --color-bg-hover: #2a3748;

    /* Text Colors */
    --color-text-primary: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-text-muted: #6e7681;

    /* Accent Colors */
    --color-accent-primary: #58a6ff;
    --color-accent-secondary: #388bfd;
    --color-accent-success: #3fb950;
    --color-accent-warning: #d29922;
    --color-accent-danger: #f85149;

    /* Viewer Specific */
    --color-canvas-bg: #000000;
    --color-grid-line: #2d333b;
    --color-slice-border: #388bfd;

    /* Borders */
    --color-border: #30363d;
    --color-border-hover: #484f58;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;

    /* Typography */
    --font-family-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-family-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =========================================
   App Layout
   ========================================= */
#app {
    display: grid;
    grid-template-rows: auto 1fr auto;
    height: 100vh;
    max-width: 100%;
}

/* =========================================
   Header
   ========================================= */
.app-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.app-header h1 {
    font-family: var(--font-family-mono);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--color-accent-primary);
    margin: 0;
}

.app-header .tagline {
    font-size: 13px;
    color: var(--color-text-muted);
    font-style: italic;
}

.privacy-badge {
    font-size: 11px;
    color: var(--color-accent-success);
    background: rgba(63, 185, 80, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
    border: 1px solid rgba(63, 185, 80, 0.3);
}

.mode-toggle {
    display: flex;
    gap: var(--spacing-xs);
    margin-left: auto;
    background: var(--color-bg-tertiary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
}

.mode-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 12px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mode-btn:hover {
    color: var(--color-text-primary);
}

.mode-btn.active {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* =========================================
   Viewer Grid (4-up display)
   ========================================= */
.viewer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-primary);
    overflow: hidden;
}

.viewer-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.viewer-panel label {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-secondary);
    background: rgba(10, 14, 20, 0.85);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    z-index: 10;
}

.viewer-canvas {
    flex: 1;
    width: 100%;
    height: 100%;
    background: var(--color-canvas-bg);
    display: block;
}

#panel-3d {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
}

/* =========================================
   Toolbar
   ========================================= */
.toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.tool-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tool-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.tool-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-hover);
}

.tool-btn:active {
    transform: scale(0.98);
}

.toolbar .label {
    font-size: 12px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#window-preset {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 13px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    cursor: pointer;
    outline: none;
}

#window-preset:focus {
    border-color: var(--color-accent-primary);
}

#slice-slider {
    width: 120px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--color-bg-tertiary);
    border-radius: 2px;
    outline: none;
}

#slice-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

#slice-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#slice-label {
    font-family: var(--font-family-mono);
    font-size: 12px;
    color: var(--color-text-secondary);
    min-width: 30px;
    text-align: right;
}

/* =========================================
   AI Panel
   ========================================= */
.ai-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 380px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    z-index: 100;
}

.ai-panel.open {
    transform: translateX(0);
}

.ai-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.ai-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.close-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.ai-chat {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.ai-input {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.ai-input input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 13px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    outline: none;
}

.ai-input input:focus {
    border-color: var(--color-accent-primary);
}

.ai-input input::placeholder {
    color: var(--color-text-muted);
}

.ai-input button {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 13px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.ai-input button:hover {
    background: var(--color-accent-secondary);
}

/* =========================================
   Scrollbar Styling
   ========================================= */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-elevated);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-bg-hover);
}

/* =========================================
   Responsive Adjustments
   ========================================= */
@media (max-width: 900px) {
    .viewer-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, 1fr);
    }

    .toolbar {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .ai-panel {
        width: 100%;
    }
}