/**
 * ColourAnime Main Application Theme
 * Modern Dark Studio UI with Anime Aesthetics
 * Fully responsive for Desktop, Tablet, and Mobile Android Screens
 */

:root {
    --bg-dark: #12131A;
    --bg-panel: #1A1C24;
    --bg-panel-elevated: #232634;
    --bg-input: #15161E;

    --accent-primary: #FF4757;
    --accent-secondary: #FF6B81;
    --accent-gold: #FFA502;
    --accent-blue: #1E90FF;

    --text-primary: #FFFFFF;
    --text-secondary: #A4B0BE;
    --text-muted: #57606F;

    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-active: rgba(255, 71, 87, 0.5);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-family);
    user-select: none;
    touch-action: manipulation;
}

#app {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    flex: 1;
    min-height: 0;
    max-height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Header Styling */
.app-header {
    height: 64px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 50;
    flex-shrink: 0;
}

.header-brand-group {
    display: flex;
    align-items: center;
    gap: 20px;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 24px;
}

.app-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #FF6B81 0%, #FFA502 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.app-subtitle {
    font-size: 0.72rem;
    color: var(--text-muted);
    display: block;
    margin-top: -2px;
}

.header-character-picker {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 4px 12px;
    transition: all 0.15s ease;
}

.header-character-picker:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.header-character-picker:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 12px rgba(255, 71, 87, 0.35);
}

.picker-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--accent-gold);
    white-space: nowrap;
}

.picker-icon {
    font-size: 1.1rem;
}

.header-select-dropdown {
    background: transparent;
    border: none;
    color: #FFFFFF;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 6px 8px;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    border-radius: var(--radius-sm);
}

.header-select-dropdown optgroup {
    background: #1A1C24;
    color: var(--accent-gold);
    font-weight: 700;
}

.header-select-dropdown option {
    background: #232634;
    color: #FFFFFF;
    font-weight: 500;
    padding: 8px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-divider {
    width: 1px;
    height: 24px;
    background: var(--border-subtle);
    margin: 0 4px;
}

.header-action-btn {
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.header-action-btn:hover:not(:disabled) {
    background: #2D3142;
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.header-action-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.header-action-btn.icon-only {
    padding: 8px 10px;
}

.header-action-btn.primary {
    background: linear-gradient(135deg, #FF4757 0%, #FF6B81 100%);
    border: none;
    color: #FFFFFF;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(255, 71, 87, 0.35);
}

.header-action-btn.primary:hover {
    box-shadow: 0 4px 16px rgba(255, 71, 87, 0.5);
}

/* Prominent Fit to Screen Button in Header */
.header-action-btn.highlight-fit-btn {
    background: rgba(30, 144, 255, 0.18);
    border: 1px solid rgba(30, 144, 255, 0.5);
    color: #82B1FF;
    font-weight: 700;
}

.header-action-btn.highlight-fit-btn:hover {
    background: rgba(30, 144, 255, 0.35);
    border-color: #82B1FF;
    color: #FFFFFF;
    box-shadow: 0 0 12px rgba(30, 144, 255, 0.4);
}

/* Main Workspace Layout */
.app-workspace {
    display: flex;
    flex: 1;
    min-height: 0; /* CRITICAL FOR FLEXBOX OVERFLOW CONTAINMENT */
    height: calc(100vh - 64px);
    max-height: calc(100vh - 64px);
    overflow: hidden;
    position: relative;
}

/* Left Canvas Area */
.canvas-area {
    flex: 1;
    height: 100%;
    min-height: 0;
    position: relative;
    overflow: hidden;
    background: #0E0F14;
    display: flex;
    flex-direction: column;
}

/* Right Studio Sidebar (Palette & Toolbars) with Permanent Visible Scrollbar */
.studio-sidebar {
    width: 380px;
    min-width: 340px;
    max-width: 380px;
    height: 100%;
    max-height: 100%;
    background: var(--bg-panel);
    border-left: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    overflow-y: scroll !important; /* Force permanent visible vertical scrollbar */
    overflow-x: hidden;
    z-index: 40;
    flex-shrink: 0;
    scrollbar-width: thin;
    scrollbar-color: #6C7293 #15161E;
    scrollbar-gutter: stable; /* Keeps layout completely stable without shifts */
}

/* Permanent visible custom scrollbar for Webkit/Blink browsers */
.studio-sidebar::-webkit-scrollbar {
    width: 12px !important;
    display: block !important;
}

.studio-sidebar::-webkit-scrollbar-track {
    background: #15161E !important;
    border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.studio-sidebar::-webkit-scrollbar-thumb {
    background: #5A5F75 !important;
    border-radius: 6px;
    border: 3px solid #15161E;
    min-height: 40px;
}

.studio-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary, #FF4757) !important;
}

/* Palette Card */
.palette-card, .toolbar-card {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.toolbar-card {
    border-bottom: 1px solid var(--border-subtle);
}

/* Active Color Banner */
.active-color-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px 12px;
}

.active-swatch-box {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    border: 2px solid #FFFFFF;
    box-shadow: var(--shadow-sm);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
    overflow: hidden;
    transition: transform 0.15s ease;
}

.active-swatch-box:hover {
    transform: scale(1.05);
}

.active-swatch-box input[type="color"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    opacity: 0;
    cursor: pointer;
}

.active-swatch-details {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.active-hex-code {
    font-size: 1rem;
    font-weight: 800;
    font-family: monospace;
    letter-spacing: 0.5px;
    color: #FFFFFF;
}

.active-subtext {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.inline-picker-label {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
}

.inline-picker-label:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
}

/* Palette Section */
.palette-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}

/* Individual Suggested Part Colors */
.highlight-section {
    background: rgba(255, 165, 2, 0.08);
    border: 1px solid rgba(255, 165, 2, 0.25);
    border-radius: var(--radius-md);
    padding: 10px;
    margin-top: 4px;
}

.part-suggestions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-top: 4px;
}

.part-color-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: left;
}

.part-color-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: #2D3142;
    transform: translateY(-1px);
}

.part-color-btn.active {
    border-color: var(--accent-gold);
    background: rgba(255, 165, 2, 0.2);
    box-shadow: 0 0 8px rgba(255, 165, 2, 0.3);
}

.part-swatch {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid rgba(0, 0, 0, 0.3);
    flex-shrink: 0;
}

.part-name {
    font-size: 0.73rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.end-sidebar-section {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px dashed rgba(255, 255, 255, 0.15);
}

.palette-section-title {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.4px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Spectrum Grid (All Colors Matrix) */
.spectrum-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    background: var(--bg-input);
    padding: 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
}

.spectrum-dot {
    height: 28px;
    border-radius: 5px;
    border: 1px solid rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.spectrum-dot:hover {
    transform: scale(1.18);
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.spectrum-dot.active {
    outline: 2px solid #FFFFFF;
    outline-offset: 1px;
    transform: scale(1.12);
}

/* Color Chips Grid */
.color-chips-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.color-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    cursor: pointer;
    transition: all 0.12s ease;
    text-align: left;
}

.color-chip:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background: #2D3142;
    transform: translateY(-1px);
}

.color-chip.active {
    border-color: var(--accent-primary);
    background: rgba(255, 71, 87, 0.15);
}

.chip-swatch {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid rgba(0, 0, 0, 0.25);
    flex-shrink: 0;
}

.chip-label {
    font-size: 0.74rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.color-boxes-row {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.color-box {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    flex-shrink: 0;
    transition: transform 0.12s ease;
}

.color-box:hover {
    transform: scale(1.1);
}

.color-box.active {
    border-color: #FFFFFF;
    box-shadow: 0 0 0 2px var(--accent-primary);
}

/* Toolbar & Mode Switcher */
.mode-switcher {
    display: flex;
    background: var(--bg-input);
    padding: 4px;
    border-radius: var(--radius-sm);
    gap: 4px;
}

.mode-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 10px;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mode-tab-btn.active {
    background: var(--accent-primary);
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(255, 71, 87, 0.3);
}

.mode-description-bar {
    background: rgba(255, 165, 2, 0.1);
    border: 1px solid rgba(255, 165, 2, 0.25);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 0.78rem;
    color: #FFEAA7;
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.4;
}

/* Active Brush Banner */
.active-brush-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 71, 87, 0.12);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
}

.active-brush-icon {
    font-size: 1.4rem;
}

.active-brush-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.active-brush-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: #FFFFFF;
}

.active-brush-hint {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

/* Category Filter Pills */
.brush-category-pills {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.brush-cat-pill {
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.15s ease;
}

.brush-cat-pill:hover {
    color: #FFFFFF;
    background: #2D3142;
}

.brush-cat-pill.active {
    background: var(--accent-primary);
    color: #FFFFFF;
    border-color: var(--accent-primary);
}

/* 30-Brush Scrollable Grid */
.brush-selector-scroll-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    max-height: 240px;
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-gutter: stable;
}

.brush-tool-btn {
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 7px 8px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: left;
}

.brush-tool-btn:hover {
    background: #2D3142;
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

.brush-tool-btn.active {
    background: rgba(255, 71, 87, 0.25);
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(255, 71, 87, 0.35);
    color: #FFFFFF;
}

.brush-icon {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.brush-label {
    font-size: 0.72rem;
    font-weight: 600;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Sliders */
.sliders-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 4px;
}

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

.slider-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.slider-val {
    font-weight: 600;
    color: var(--text-primary);
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    box-shadow: 0 0 6px rgba(255, 71, 87, 0.6);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 20px;
}

.modal-dialog {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.gallery-dialog {
    width: 900px;
    max-width: 95vw;
}

.upload-dialog {
    width: 580px;
    max-width: 95vw;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.modal-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close-btn:hover {
    color: #FFFFFF;
}

/* Gallery Modal Contents */
.gallery-controls {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Search Any Character Highlight Button */
.search-anime-highlight {
    background: linear-gradient(135deg, #FF4757 0%, #FF6B81 100%) !important;
    color: #FFFFFF !important;
    border: 1px solid rgba(255, 255, 255, 0.25) !important;
    box-shadow: 0 2px 10px rgba(255, 71, 87, 0.45) !important;
    font-weight: 600 !important;
    padding: 6px 14px !important;
    transition: all 0.2s ease !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    margin-left: 6px !important;
    cursor: pointer !important;
}

.search-anime-highlight:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 16px rgba(255, 71, 87, 0.6) !important;
    filter: brightness(1.1) !important;
}

/* Gallery Controls & Search Layout */
.gallery-search-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.gallery-search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    flex: 1;
}

.clear-search-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    line-height: 1;
}

.clear-search-btn:hover {
    color: #FFF;
}

.online-search-submit-btn {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-sm);
    padding: 9px 16px;
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.online-search-submit-btn:hover {
    filter: brightness(1.15);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.popular-suggestions-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    padding-top: 4px;
}

.suggestion-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.suggestion-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.suggestion-tag-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.suggestion-tag-btn:hover {
    background: var(--accent-primary);
    color: #FFF;
    border-color: var(--accent-primary);
}

/* Gallery Body & Cards */
.gallery-body-area {
    max-height: 60vh;
    overflow-y: auto;
}

.online-preview {
    background: #1A1A1E !important;
}

.online-char-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 4px;
}

.online-badge {
    background: linear-gradient(135deg, #3B82F6, #1D4ED8) !important;
    color: #FFFFFF !important;
}

.card-color-btn {
    margin-top: 8px;
    background: var(--accent-primary);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-sm);
    padding: 7px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
    display: block;
    width: 100%;
}

.card-color-btn:hover {
    filter: brightness(1.15);
    box-shadow: 0 4px 12px rgba(255, 71, 87, 0.4);
}

.online-results-header {
    padding: 12px 20px 4px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.online-results-header h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #FFFFFF;
}

.results-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.char-native {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Empty & Loading States */
.gallery-empty-state, .gallery-loading-state {
    padding: 48px 24px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.empty-icon {
    font-size: 2.4rem;
}

.gallery-empty-state h3, .gallery-loading-state h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.gallery-empty-state p, .gallery-loading-state p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    max-width: 420px;
}

.btn-search-online-cta {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    color: #FFF;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
    transition: all 0.2s ease;
}

.btn-search-online-cta:hover {
    filter: brightness(1.15);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.5);
}

.search-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.15);
    border-top-color: #3B82F6;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.inline-spinner {
    display: inline-block;
    animation: spin 1s linear infinite;
}

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

.gallery-search-box input {
    background: transparent;
    border: none;
    color: #FFFFFF;
    font-size: 0.88rem;
    width: 100%;
    outline: none;
}

.category-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
}

.category-chip {
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.category-chip.active {
    background: var(--accent-primary);
    color: #FFFFFF;
    border-color: var(--accent-primary);
}

.gallery-grid {
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    overflow-y: auto;
}

.character-card {
    background: var(--bg-panel-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.18s ease;
    display: flex;
    flex-direction: column;
}

.character-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(255, 71, 87, 0.25);
}

.card-sketch-preview {
    height: 180px;
    background: #FAF8F5;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.card-svg {
    width: 100%;
    height: 100%;
}

.difficulty-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
}

.difficulty-badge.easy { background: rgba(46, 213, 115, 0.85); color: #000; }
.difficulty-badge.medium { background: rgba(255, 165, 2, 0.85); color: #000; }
.difficulty-badge.hard { background: rgba(255, 71, 87, 0.85); color: #FFF; }

.card-details {
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.card-char-name {
    font-size: 1rem;
    font-weight: 700;
}

.card-series-tag {
    font-size: 0.75rem;
    color: var(--accent-gold);
    font-weight: 600;
}

.card-description {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.3;
    margin: 4px 0 8px 0;
}

.card-palette-row {
    display: flex;
    gap: 4px;
}

.mini-swatch {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    border: 1px solid rgba(0, 0, 0, 0.2);
}

/* Upload Dropzone */
.upload-dropzone {
    padding: 40px 20px;
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    margin: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    background: var(--bg-input);
}

.upload-dropzone.drag-over {
    border-color: var(--accent-primary);
    background: rgba(255, 71, 87, 0.1);
}

.drop-icon {
    font-size: 2.8rem;
}

.upload-browse-btn {
    background: var(--accent-primary);
    color: #FFF;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 20px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
}

.sketch-converter-workspace {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.preview-container {
    height: 260px;
    background: #FAF8F5;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.converter-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.converter-actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.converter-btn {
    flex: 1;
    padding: 10px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    border: none;
}

.converter-btn.secondary {
    background: var(--bg-panel-elevated);
    color: var(--text-primary);
}

.converter-btn.primary {
    background: var(--accent-primary);
    color: #FFFFFF;
}

/* Responsive Mobile Layout (Android Screen Adaptation) */
@media (max-width: 840px) {
    .app-workspace {
        flex-direction: column;
    }

    .studio-sidebar {
        width: 100%;
        height: 320px;
        border-left: none;
        border-top: 1px solid var(--border-subtle);
    }

    .header-action-btn .btn-text {
        display: none;
    }

    .header-character-picker .picker-text {
        display: none;
    }

    .header-select-dropdown {
        max-width: 160px;
        font-size: 0.8rem;
    }
}