/**
 * TileWeaver - Design System & Custom Styling Rules
 * -------------------------------------------------
 * This stylesheet complements Tailwind CSS by providing specialized rules for:
 * 1. Pixel art canvas rendering (`image-rendering: pixelated`).
 * 2. Dynamic 2D canvas checkerboard pattern for transparency background.
 * 3. Custom dark mode scrollbar styling.
 * 4. Active state highlights for tool buttons, layer stack items, and wizard slots.
 * 5. Toast notification animation transitions.
 */

:root {
    --bg-color: #0f172a;
    --check-dark: #1e293b;
    --check-light: #334155;
}

body {
    background-color: var(--bg-color);
    margin: 0;
    overflow: hidden;
    user-select: none;
}

/* ==========================================================================
   1. Checkerboard Background Pattern
   Used behind canvases to visually indicate transparent regions.
   ========================================================================== */
.checkerboard {
    background-color: var(--check-dark);
    background-image: 
        linear-gradient(45deg, var(--check-light) 25%, transparent 25%, transparent 75%, var(--check-light) 75%, var(--check-light)),
        linear-gradient(45deg, var(--check-light) 25%, transparent 25%, transparent 75%, var(--check-light) 75%, var(--check-light));
    background-size: 32px 32px;
    background-position: 0 0, 16px 16px;
}

/* ==========================================================================
   2. Dark Theme Webkit Scrollbars
   ========================================================================== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #0f172a; 
}
::-webkit-scrollbar-thumb {
    background: #475569; 
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #64748b; 
}

/* ==========================================================================
   3. Canvas Pixel-Art Rendering
   Ensures sharp, crisp pixel boundaries when tiles are scaled up or down.
   ========================================================================== */
canvas {
    display: block;
    image-rendering: pixelated; /* Essential for pixel-art level editors */
}

/* ==========================================================================
   4. Tool Palette & UI State Classes
   ========================================================================== */
/* Active drawing tool button state */
.btn-tool-active {
    background-color: #3b82f6 !important;
    border-color: #60a5fa !important;
    color: white !important;
}

/* Active system mode toggle button state */
.btn-toggle-active {
    background-color: #3b82f6 !important;
    color: white !important;
    border-color: #60a5fa !important;
}

/* Active Cliffside Brush Tool state */
.btn-cliff-active {
    background-color: #d97706 !important;
    color: white !important;
    border-color: #f59e0b !important;
}

/* Active layer stack item selection border */
.layer-item.active {
    background-color: #1e293b;
    border-left: 4px solid #3b82f6;
}

/* Active Autotile Wizard slot selection highlight */
.wizard-slot-active {
    border-color: #10b981 !important;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.4);
    background-color: rgba(6, 78, 59, 0.4) !important;
}

/* Active Cliffside Wizard slot selection highlight */
.cliff-slot-active {
    border-color: #f59e0b !important;
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.4);
    background-color: rgba(120, 53, 15, 0.4) !important;
}

/* Anatomical Cliff Structure Badges */
.cliff-anatomical-badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    shrink: 0;
}
.tier-badge-top {
    background-color: rgba(217, 119, 6, 0.25);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.5);
}
.tier-badge-mid {
    background-color: rgba(14, 116, 144, 0.25);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.5);
}
.tier-badge-base {
    background-color: rgba(16, 185, 129, 0.25);
    color: #34d399;
    border: 1px solid rgba(52, 211, 153, 0.5);
}

/* Active Autotile Wizard tab header button */
.wizard-tab-active {
    background-color: #10b981 !important;
    color: white !important;
    font-weight: 700 !important;
}

/* ==========================================================================
   5. Viewport Pan Cursors
   ========================================================================== */
.cursor-grab { cursor: grab; }
.cursor-grabbing { cursor: grabbing; }

/* ==========================================================================
   6. Global Toast Notification Box Animations
   ========================================================================== */
#message-box {
    transition: opacity 0.25s ease, transform 0.25s ease;
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
}
#message-box.show {
    transform: translateY(0);
    opacity: 1;
}

/* ==========================================================================
   7. Dual-Grid Mini 2x2 Corner Badges & Material Legend
   ========================================================================== */
.dualgrid-badge {
    display: grid;
    grid-template-columns: repeat(2, 7px);
    grid-template-rows: repeat(2, 7px);
    gap: 1.5px;
    padding: 2px;
    background: #020617;
    border: 1px solid #334155;
    border-radius: 3px;
    flex-shrink: 0;
}
.dualgrid-corner-base {
    background-color: var(--mat1-color, #10b981);
    border-radius: 1px;
    box-shadow: 0 0 2px var(--mat1-color, #10b981);
    transition: background-color 0.2s ease;
}
.dualgrid-corner-overlay {
    background-color: var(--mat2-color, #f59e0b);
    border-radius: 1px;
    box-shadow: 0 0 2px var(--mat2-color, #f59e0b);
    transition: background-color 0.2s ease;
}

/* ==========================================================================
   8. Terrain Swatch Card & Studio Accordion Styles (V2)
   ========================================================================== */
.swatch-card {
    transition: all 0.15s ease-in-out;
}
.swatch-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.swatch-card-active {
    box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.5), 0 4px 14px rgba(20, 184, 166, 0.2) !important;
}

/* Accordion Group & Header Styling */
.swatch-accordion-group {
    border: 1px solid rgba(51, 65, 85, 0.6);
    border-radius: 0.5rem;
    background-color: rgba(15, 23, 42, 0.6);
    overflow: hidden;
    transition: border-color 0.15s ease;
    flex-shrink: 0;
}
.swatch-accordion-group:hover {
    border-color: rgba(71, 85, 105, 0.8);
}
.swatch-accordion-header {
    width: 100%;
    padding: 0.35rem 0.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: rgba(30, 41, 59, 0.7);
    cursor: pointer;
    user-select: none;
    transition: background-color 0.15s ease;
}
.swatch-accordion-header:hover {
    background-color: rgba(51, 65, 85, 0.7);
}
.swatch-accordion-caret {
    transition: transform 0.2s ease;
}
.swatch-accordion-collapsed .swatch-accordion-caret {
    transform: rotate(-90deg);
}
.swatch-accordion-collapsed .swatch-accordion-body {
    display: none;
}

/* Swatch Card V2 Clean & Compact Layout */
.swatch-card-v2 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.3rem 0.45rem;
    border-radius: 0.375rem;
    border: 1px solid rgba(51, 65, 85, 0.8);
    background-color: rgba(15, 23, 42, 0.85);
    cursor: pointer;
    transition: all 0.12s ease;
    position: relative;
}
.swatch-card-v2:hover {
    border-color: rgba(100, 116, 139, 0.9);
    background-color: rgba(30, 41, 59, 0.95);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}
.swatch-card-v2:hover .swatch-hover-action {
    opacity: 1;
    pointer-events: auto;
}
.swatch-hover-action {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

/* Active Highlight Rings Per Classification */
.swatch-card-v2.active-ground, .swatch-card-compact.active-ground, .swatch-chip.active-ground {
    border-color: #14b8a6 !important;
    background-color: #0f172a !important;
    box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.4), 0 4px 12px rgba(20, 184, 166, 0.15) !important;
}
.swatch-card-v2.active-cliff, .swatch-card-compact.active-cliff, .swatch-chip.active-cliff {
    border-color: #f59e0b !important;
    background-color: #0f172a !important;
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.4), 0 4px 12px rgba(245, 158, 11, 0.15) !important;
}
.swatch-card-v2.active-wall, .swatch-card-compact.active-wall, .swatch-chip.active-wall {
    border-color: #3b82f6 !important;
    background-color: #0f172a !important;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.4), 0 4px 12px rgba(59, 130, 246, 0.15) !important;
}

/* Drag-and-Drop Priority Stack Styles */
.swatch-card-v2[draggable="true"], .swatch-card-compact[draggable="true"] {
    user-select: none;
}
.swatch-drag-handle {
    cursor: grab;
    color: #64748b;
    transition: color 0.12s ease;
}
.swatch-drag-handle:hover {
    color: #94a3b8;
}
.swatch-card-v2.dragging, .swatch-card-compact.dragging {
    opacity: 0.4;
    transform: scale(0.98);
    border: 1px dashed #14b8a6 !important;
}
.swatch-drag-over-top {
    border-top: 2px solid #14b8a6 !important;
    box-shadow: 0 -3px 8px rgba(20, 184, 166, 0.4);
}
.swatch-drag-over-bottom {
    border-bottom: 2px solid #14b8a6 !important;
    box-shadow: 0 3px 8px rgba(20, 184, 166, 0.4);
}

/* View Density Mode: Compact List */
.swatch-card-compact {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.35rem;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    border: 1px solid rgba(51, 65, 85, 0.7);
    background-color: rgba(15, 23, 42, 0.85);
    cursor: pointer;
    transition: all 0.12s ease;
    position: relative;
    height: 26px;
}
.swatch-card-compact:hover {
    border-color: rgba(100, 116, 139, 0.9);
    background-color: rgba(30, 41, 59, 0.95);
}
.swatch-card-compact:hover .swatch-hover-action {
    opacity: 1;
    pointer-events: auto;
}

/* View Density Mode: Visual Chips Grid */
.swatch-chips-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(68px, 1fr));
    gap: 0.35rem;
}
.swatch-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    padding: 0.35rem 0.25rem;
    border-radius: 0.375rem;
    border: 1px solid rgba(51, 65, 85, 0.8);
    background-color: rgba(15, 23, 42, 0.9);
    cursor: pointer;
    text-align: center;
    transition: all 0.12s ease;
    position: relative;
}
.swatch-chip:hover {
    transform: translateY(-1px);
    border-color: rgba(100, 116, 139, 0.9);
    background-color: rgba(30, 41, 59, 0.95);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}
.swatch-chip:hover .swatch-hover-action {
    opacity: 1;
    pointer-events: auto;
}

/* Viewport Top Centered Floating HUD Stack */
.viewport-hud-stack {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
    z-index: 30;
    pointer-events: none;
    transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s ease;
}

.viewport-hud-stack.ribbon-fade {
    opacity: 0.15 !important;
    pointer-events: none !important;
}

/* Viewport Floating Active Swatch Ribbon HUD (Hotkeys 1-5) */
.swatch-ribbon {
    position: relative;
    pointer-events: auto;
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(51, 65, 85, 0.85);
    border-radius: 9999px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
    transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s ease;
}
.swatch-ribbon.ribbon-fade {
    opacity: 0.15 !important;
    pointer-events: none !important;
}
.ribbon-slot {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.45rem;
    border-radius: 9999px;
    border: 1px solid transparent;
    background-color: rgba(30, 41, 59, 0.6);
    cursor: pointer;
    transition: all 0.12s ease;
}
.ribbon-slot:hover {
    background-color: rgba(51, 65, 85, 0.9);
    border-color: rgba(100, 116, 139, 0.8);
    transform: translateY(-1px);
}
.ribbon-slot.active-ground {
    border-color: #14b8a6 !important;
    background-color: rgba(15, 23, 42, 0.95) !important;
    box-shadow: 0 0 0 1.5px rgba(20, 184, 166, 0.5) !important;
}
.ribbon-slot.active-cliff {
    border-color: #f59e0b !important;
    background-color: rgba(15, 23, 42, 0.95) !important;
    box-shadow: 0 0 0 1.5px rgba(245, 158, 11, 0.5) !important;
}
.ribbon-slot.active-wall {
    border-color: #3b82f6 !important;
    background-color: rgba(15, 23, 42, 0.95) !important;
    box-shadow: 0 0 0 1.5px rgba(59, 130, 246, 0.5) !important;
}
.ribbon-hotkey-badge {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 8.5px;
    font-weight: 700;
    padding: 0.1rem 0.3rem;
    border-radius: 0.25rem;
    background-color: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(71, 85, 105, 0.7);
    color: #94a3b8;
}

/* Material Wizard Header Active Glow Rings */
.mat1-card-active {
    border-color: var(--mat1-color, #10b981) !important;
    box-shadow: 0 0 0 2px var(--mat1-color, #10b981), 0 4px 14px var(--mat1-color, #10b981) !important;
}
.mat2-card-active {
    border-color: var(--mat2-color, #f59e0b) !important;
    box-shadow: 0 0 0 2px var(--mat2-color, #f59e0b), 0 4px 14px var(--mat2-color, #f59e0b) !important;
}
.mat3-card-active {
    border-color: #a855f7 !important;
    box-shadow: 0 0 0 2px #a855f7, 0 4px 14px rgba(168, 85, 247, 0.4) !important;
}

/* ==========================================================================
   9. Cliff Elevation Tier Headers & 2x2 Micro-Badges
   ========================================================================== */
.tier-header-container {
    width: 100%;
    margin-top: 0.5rem;
    margin-bottom: 0.25rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.tier-header-top {
    color: #fbbf24;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    items-center: center;
    gap: 0.375rem;
}
.tier-header-mid {
    color: #f59e0b;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    items-center: center;
    gap: 0.375rem;
}
.tier-header-base {
    color: #c084fc;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    items-center: center;
    gap: 0.375rem;
}

.badge-2x2-matrix {
    display: grid;
    grid-template-columns: repeat(2, 8px);
    grid-template-rows: repeat(2, 8px);
    gap: 1px;
    padding: 2px;
    background: #020617;
    border: 1px solid #334155;
    border-radius: 3px;
    flex-shrink: 0;
}
.badge-2x2-matrix .mat-cell-1 {
    background-color: #10b981;
    border-radius: 1px;
}
.badge-2x2-matrix .mat-cell-2 {
    background-color: #f59e0b;
    border-radius: 1px;
}
.badge-2x2-matrix .mat-cell-3 {
    background-color: #a855f7;
    border-radius: 1px;
}

/* ==========================================================================
   10. Resizable Sidebar & Drag Handle
   ========================================================================== */
.sidebar-resizer {
    width: 5px;
    height: 100%;
    background-color: #1e293b;
    border-left: 1px solid #334155;
    border-right: 1px solid #0f172a;
    cursor: col-resize;
    z-index: 30;
    transition: background-color 0.15s ease;
    flex-shrink: 0;
}
.sidebar-resizer:hover, .sidebar-resizer.is-resizing {
    background-color: #3b82f6;
    border-color: #60a5fa;
}

/* Collapsed Sidebar Dock Mode */
.sidebar-collapsed {
    width: 3.5rem !important; /* 56px collapsed width */
    min-width: 3.5rem !important;
}
.sidebar-collapsed .hide-on-collapse {
    display: none !important;
}

/* ==========================================================================
   11. Smart Contextual Viewport HUD
   ========================================================================== */
.hud-glass-panel {
    background-color: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(51, 65, 85, 0.8);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

/* Tool category tab active header */
.tool-tab-active {
    border-bottom: 2px solid #3b82f6 !important;
    color: #f8fafc !important;
    background-color: #1e293b !important;
    font-weight: 700 !important;
}

/* ==========================================================================
   12. Tileset Pop-Out Window & Bottom Dock Styles
   ========================================================================== */
.tileset-popout-window {
    position: fixed;
    z-index: 50;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(51, 65, 85, 0.9);
    border-radius: 0.5rem;
    box-shadow: 0 20px 35px -5px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    resize: both;
    min-width: 450px;
    min-height: 320px;
}

.tileset-popout-header {
    cursor: move;
    user-select: none;
}

.tileset-bottom-dock {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 30;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid #334155;
    box-shadow: 0 -10px 25px -5px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    transition: height 0.15s ease-out;
}

.dock-resizer {
    height: 5px;
    width: 100%;
    cursor: row-resize;
    background: #1e293b;
    border-top: 1px solid #334155;
    transition: background-color 0.15s;
}
.dock-resizer:hover {
    background: #3b82f6;
}

/* Right Live Tile Properties Inspector Panel */
.right-inspector-panel {
    width: 310px;
    background-color: rgba(15, 23, 42, 0.96);
    border-left: 1px solid #334155;
    display: flex;
    flex-direction: column;
    z-index: 25;
    transition: width 0.15s ease-out, min-width 0.15s ease-out;
    overflow: hidden;
}

.right-inspector-panel.right-sidebar-collapsed {
    width: 36px !important;
    min-width: 36px !important;
}

.right-inspector-panel.right-sidebar-collapsed #right-inspector-header {
    padding-left: 4px !important;
    padding-right: 4px !important;
    justify-content: center !important;
}

.right-inspector-panel.right-sidebar-collapsed .hide-on-collapse {
    display: none !important;
}

.right-inspector-panel.right-sidebar-collapsed #right-inspector-body {
    display: none !important;
}

/* ==========================================================================
   10. Smart-Anchor Tile Variation Manager Styling
   ========================================================================== */
.input-var-slider {
    -webkit-appearance: none;
    appearance: none;
    background: #1e293b;
    outline: none;
    border-radius: 9999px;
}

.input-var-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #14b8a6;
    cursor: pointer;
    border: 2px solid #042f2e;
    box-shadow: 0 0 4px rgba(20, 184, 166, 0.6);
    transition: transform 0.1s, background-color 0.1s;
}

.input-var-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: #2dd4bf;
}

.btn-var-preset {
    transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.btn-var-preset:hover {
    background-color: #042f2e !important;
    color: #5eead4 !important;
    border-color: #0f766e !important;
}

/* ==========================================================================
   11. Project Digital Asset Vault & Upload Wizard Styling
   ========================================================================== */
.asset-card {
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.asset-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px -2px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(59, 130, 246, 0.15);
}

.upload-choice-card {
    transition: transform 0.12s ease, border-color 0.12s ease, background-color 0.12s ease, box-shadow 0.12s ease;
}

.upload-choice-card:hover {
    transform: translateX(2px);
}

.bg-slate-750 {
    background-color: #243248;
}

.border-slate-750 {
    border-color: #243248;
}

.bg-slate-850 {
    background-color: #162032;
}

/* Custom smooth scrollbar for Asset Vault */
.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.6);
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(51, 65, 85, 0.8);
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 116, 139, 1);
}