/* ============================================
   NOISE LAB - PROCEDURAL TEXTURE GENERATOR
   Design: Scientific Laboratory Aesthetic
   ============================================ */

/* Design Tokens */
:root {
    /* Core Palette - Deep instrument blacks with precision accents */
    --bg-void: #020304;
    --bg-deep: #050709;
    --bg-primary: #0a0d10;
    --bg-elevated: #0e1216;
    --bg-surface: #12171c;
    --bg-panel: #161c22;
    --bg-input: #0c0f12;
    --bg-hover: #1a2028;

    /* Accent - Amber/Orange for scientific precision look */
    --accent-primary: #f59e0b;
    --accent-primary-dim: rgba(245, 158, 11, 0.15);
    --accent-primary-glow: rgba(245, 158, 11, 0.3);
    --accent-secondary: #06b6d4;
    --accent-secondary-dim: rgba(6, 182, 212, 0.15);
    --accent-tertiary: #10b981;
    --accent-danger: #ef4444;

    /* Text */
    --text-primary: #e8ebed;
    --text-secondary: #8b939c;
    --text-muted: #5c6670;
    --text-accent: var(--accent-primary);

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.04);
    --border-default: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.12);
    --border-accent: rgba(245, 158, 11, 0.3);

    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;

    /* Layout */
    --header-height: 52px;
    --sidebar-width: 280px;
    --statusbar-height: 32px;

    /* Radius */
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 8px;
}

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

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

body {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--bg-void);
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================
   BACKGROUND EFFECTS
   ============================================ */

.bg-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(245, 158, 11, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 158, 11, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 0%, transparent 70%);
}

.bg-noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.bg-vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 0%, var(--bg-void) 100%);
}

/* ============================================
   APP LAYOUT
   ============================================ */

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: relative;
    z-index: 1;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    height: var(--header-height);
    background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    flex-shrink: 0;
    position: relative;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary-dim), transparent);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.back-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
    font-family: var(--font-mono);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
}

.back-link:hover {
    color: var(--accent-primary);
    background: var(--accent-primary-dim);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding-left: var(--space-3);
    border-left: 1px solid var(--border-subtle);
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-weight: 600;
    font-size: 15px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-primary) 0%, #fbbf24 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-version {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.resolution-display {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
}

.resolution-label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.resolution-value {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-primary);
    font-weight: 500;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #d97706 100%);
    border-color: var(--accent-primary);
    color: #000;
    font-weight: 600;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #fbbf24 0%, var(--accent-primary) 100%);
    box-shadow: 0 0 20px var(--accent-primary-glow);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.btn-sm {
    padding: var(--space-1) var(--space-2);
    font-size: 11px;
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
}

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

/* ============================================
   MAIN LAYOUT
   ============================================ */

.main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* ============================================
   SIDEBARS
   ============================================ */

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-color: var(--border-default);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-left {
    border-right: 1px solid var(--border-default);
}

.sidebar-right {
    border-left: 1px solid var(--border-default);
}

/* ============================================
   PANELS
   ============================================ */

.panel {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border-subtle);
}

.panel:last-child {
    border-bottom: none;
    flex: 1;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.panel-title svg {
    color: var(--accent-primary);
}

/* ============================================
   LAYERS
   ============================================ */

.layers-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-2);
}

.layer-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.layer-item:hover {
    border-color: var(--border-default);
    background: var(--bg-hover);
}

.layer-item.active {
    border-color: var(--accent-primary);
    background: var(--accent-primary-dim);
}

.layer-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent-primary);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.layer-preview {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    overflow: hidden;
    flex-shrink: 0;
}

.layer-preview canvas {
    width: 100%;
    height: 100%;
}

.layer-info {
    flex: 1;
    min-width: 0;
}

.layer-name {
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.layer-type {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.layer-actions {
    display: flex;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.layer-item:hover .layer-actions {
    opacity: 1;
}

.layer-action-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.layer-action-btn.danger:hover {
    background: var(--accent-danger);
    color: white;
}

/* ============================================
   PRESETS
   ============================================ */

.presets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
    padding: var(--space-3);
}

.preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-2);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

.preset-btn:hover {
    border-color: var(--accent-primary);
    background: var(--accent-primary-dim);
}

.preset-icon {
    font-size: 20px;
    line-height: 1;
    filter: grayscale(1) brightness(0.8);
    transition: filter 0.15s ease;
}

.preset-btn:hover .preset-icon {
    filter: none;
}

.preset-name {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* ============================================
   CANVAS AREA
   ============================================ */

.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-deep);
    position: relative;
    overflow: hidden;
}

.canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(45deg, var(--bg-void) 25%, transparent 25%),
        linear-gradient(-45deg, var(--bg-void) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--bg-void) 75%),
        linear-gradient(-45deg, transparent 75%, var(--bg-void) 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
    background-color: var(--bg-primary);
}

#noiseCanvas {
    box-shadow:
        0 0 0 1px var(--border-default),
        0 20px 60px -20px rgba(0, 0, 0, 0.8);
    image-rendering: pixelated;
}

.canvas-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tile-grid {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--accent-primary);
    padding: 1px;
    box-shadow: 0 0 40px var(--accent-primary-glow);
}

.tile-grid.active {
    display: grid;
}

.tile-grid canvas {
    display: block;
}

.canvas-controls {
    position: absolute;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    background: rgba(10, 13, 16, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
}

.canvas-ctrl-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}

.canvas-ctrl-btn:hover {
    background: var(--bg-hover);
    color: var(--accent-primary);
}

.canvas-ctrl-btn.active {
    background: var(--accent-primary-dim);
    color: var(--accent-primary);
}

.zoom-level {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-secondary);
    min-width: 48px;
    text-align: center;
}

.ctrl-divider {
    width: 1px;
    height: 20px;
    background: var(--border-default);
}

/* ============================================
   HISTOGRAM
   ============================================ */

.histogram-panel {
    height: 100px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-default);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.histogram-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.histogram-title {
    font-family: var(--font-mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.histogram-stats {
    display: flex;
    gap: var(--space-4);
}

.stat {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-secondary);
}

.stat-label {
    color: var(--text-muted);
}

#histogramCanvas {
    width: 100%;
    height: 60px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
}

/* ============================================
   PARAMETERS
   ============================================ */

.params-container {
    padding: var(--space-3);
    overflow-y: auto;
    flex: 1;
}

.param-group {
    margin-bottom: var(--space-4);
}

.param-group:last-child {
    margin-bottom: 0;
}

.param-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

/* Slider */
.param-slider {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.slider-value {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent-primary);
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--bg-input);
    border-radius: 2px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-primary-glow);
    transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-webkit-slider-thumb:active {
    transform: scale(0.95);
}

/* Select */
.param-select {
    position: relative;
}

.param-select select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    padding-right: var(--space-6);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 12px;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

.param-select::after {
    content: '';
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid var(--text-muted);
    pointer-events: none;
}

.param-select select:focus {
    border-color: var(--accent-primary);
    outline: none;
}

/* Resolution buttons */
.resolution-buttons,
.format-buttons {
    display: flex;
    gap: var(--space-1);
}

.res-btn,
.format-btn,
.channel-btn {
    flex: 1;
    padding: var(--space-2);
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.res-btn:hover,
.format-btn:hover,
.channel-btn:hover {
    border-color: var(--border-default);
    color: var(--text-primary);
}

.res-btn.active,
.format-btn.active,
.channel-btn.active {
    background: var(--accent-primary-dim);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Toggle */
.toggle-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.toggle {
    position: relative;
    width: 40px;
    height: 22px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    left: 2px;
    top: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all 0.2s ease;
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-primary-dim);
    border-color: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(18px);
    background: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-primary-glow);
}

.toggle-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Empty state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-6);
    color: var(--text-muted);
    text-align: center;
}

.empty-state svg {
    opacity: 0.3;
}

.empty-state p {
    font-size: 12px;
}

/* ============================================
   STATUS BAR
   ============================================ */

.statusbar {
    height: var(--statusbar-height);
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    font-family: var(--font-mono);
    font-size: 10px;
}

.status-left,
.status-center,
.status-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--text-muted);
}

.status-item svg {
    color: var(--accent-secondary);
}

.status-divider {
    color: var(--border-default);
}

#statusMessage {
    color: var(--accent-tertiary);
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    width: 480px;
    max-width: 90vw;
    background: var(--bg-panel);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.8);
    animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

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

.modal-body {
    padding: var(--space-4);
}

.export-preview {
    background: var(--bg-input);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-bottom: var(--space-4);
    display: flex;
    justify-content: center;
}

#exportPreviewCanvas {
    max-width: 200px;
    max-height: 200px;
    border-radius: var(--radius-sm);
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.export-option label {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-muted);
    margin-bottom: var(--space-1);
}

.input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 13px;
}

.input:focus {
    border-color: var(--accent-primary);
    outline: none;
}

.export-info {
    display: flex;
    gap: var(--space-4);
    font-size: 12px;
    color: var(--text-secondary);
}

.export-info strong {
    color: var(--text-muted);
    font-weight: 500;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    padding: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

/* ============================================
   NOISE TYPE SPECIFIC PARAMS
   ============================================ */

.noise-type-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.noise-type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3);
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
}

.noise-type-btn:hover {
    border-color: var(--border-default);
}

.noise-type-btn.active {
    border-color: var(--accent-primary);
    background: var(--accent-primary-dim);
}

.noise-type-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.noise-type-name {
    font-family: var(--font-mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
}

/* Blend mode dropdown */
.blend-mode-select {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.rendering #statusMessage {
    animation: pulse 1s ease-in-out infinite;
}