/* ==========================================================================
   Aethelgard Tools — Design System
   Single source of truth for all tool UI styling.
   ========================================================================== */

/* --- Design Tokens --- */
:root {
    /* Background layers (dark → light) */
    --t-bg-base:     #1a1a2e;
    --t-bg-surface:  #16213e;
    --t-bg-inset:    #0f3460;
    --t-bg-deep:     #0a0f1e;
    --t-bg-canvas:   #0a0a1a;
    --t-bg-hover:    rgba(255, 255, 255, 0.05);

    /* Text */
    --t-text:        #e0e0e0;
    --t-text-bright: #ffffff;
    --t-text-muted:  #888888;
    --t-text-dim:    #555555;
    --t-text-label:  #666666;

    /* Accent */
    --t-accent:      #4cc9f0;
    --t-accent-dim:  rgba(76, 201, 240, 0.10);

    /* Semantic */
    --t-success:     #4CAF50;
    --t-error:       #F44336;
    --t-warning:     #FFB300;
    --t-info:        #42A5F5;

    /* Borders */
    --t-border:      #333333;
    --t-border-dim:  #222222;
    --t-border-section: #2a2a4a;

    /* Radius */
    --t-radius:      4px;
    --t-radius-lg:   8px;

    /* Font */
    --t-font:        -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --t-font-mono:   'SF Mono', 'Cascadia Code', 'Consolas', monospace;
    --t-font-size:   14px;

    /* Transitions */
    --t-speed:       0.15s;
}

/* --- Base resets for tools scope --- */
.tools-shell {
    font-family: var(--t-font);
    font-size: var(--t-font-size);
    color: var(--t-text);
    background: var(--t-bg-base);
}

/* --- Buttons --- */
.t-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 5px 10px;
    background: var(--t-bg-inset);
    color: var(--t-text);
    border: 1px solid #444;
    border-radius: var(--t-radius);
    cursor: pointer;
    font-size: 12px;
    font-family: var(--t-font);
    transition: background var(--t-speed), border-color var(--t-speed), color var(--t-speed);
    white-space: nowrap;
}

.t-btn:hover { background: #1a5276; }
.t-btn:disabled { opacity: 0.4; cursor: default; }
.t-btn:disabled:hover { background: var(--t-bg-inset); }

.t-btn.active,
.t-btn[aria-pressed="true"] {
    background: #1a5276;
    border-color: var(--t-accent);
    color: var(--t-accent);
}

.t-btn-primary {
    background: #1565C0;
    color: #fff;
    border-color: #1565C0;
}
.t-btn-primary:hover { background: #1976D2; }

.t-btn-success {
    background: var(--t-success);
    color: #fff;
    border-color: var(--t-success);
}
.t-btn-success:hover { background: #45a049; }

.t-btn-danger {
    background: transparent;
    color: var(--t-error);
    border-color: var(--t-error);
}
.t-btn-danger:hover { background: rgba(244, 67, 54, 0.1); }

.t-btn-ghost {
    background: transparent;
    border: 1px dashed var(--t-text-dim);
    color: var(--t-text-muted);
}
.t-btn-ghost:hover { border-color: var(--t-accent); color: var(--t-accent); }

/* Button groups */
.t-btn-group { display: flex; gap: 3px; flex-wrap: wrap; }

/* --- Inputs --- */
.t-input,
.t-select,
.t-textarea {
    width: 100%;
    padding: 5px 8px;
    background: var(--t-bg-inset);
    color: var(--t-text);
    border: 1px solid #444;
    border-radius: var(--t-radius);
    font-size: 13px;
    font-family: var(--t-font);
    transition: border-color var(--t-speed);
}

.t-input:focus,
.t-select:focus,
.t-textarea:focus {
    outline: none;
    border-color: var(--t-accent);
}

.t-input:disabled { opacity: 0.5; }

.t-textarea {
    font-family: var(--t-font-mono);
    font-size: 11px;
    resize: vertical;
}

.t-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--t-text-muted);
    cursor: pointer;
}
.t-checkbox input { margin: 0; accent-color: var(--t-accent); }

/* --- Labels --- */
.t-label {
    display: block;
    font-size: 11px;
    color: var(--t-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 3px;
}

.t-section-label {
    font-size: 11px;
    color: var(--t-text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* --- Panels --- */
.t-panel {
    background: var(--t-bg-surface);
    padding: 20px;
    border-radius: var(--t-radius-lg);
    border: 1px solid var(--t-border);
}

.t-panel h3 {
    margin: 0 0 14px;
    font-size: 16px;
    color: var(--t-text-bright);
}

/* --- Sidebar section (for WorldEditor, CliffDebugger style sidebars) --- */
.t-sidebar-section {
    padding: 10px 12px;
    border-bottom: 1px solid var(--t-border-section);
}

.t-sidebar-section h3 {
    font-size: 11px;
    margin: 0 0 6px;
    color: var(--t-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Tables --- */
.t-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.t-table th,
.t-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--t-border-dim);
    text-align: left;
}

.t-table th {
    background: var(--t-bg-deep);
    color: var(--t-text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

.t-table .compact td { padding: 6px 8px; font-size: 12px; }

.t-table tr[data-selectable] { cursor: pointer; transition: background var(--t-speed); }
.t-table tr[data-selectable]:hover { background: var(--t-bg-hover); }
.t-table tr.selected { background: var(--t-accent-dim); }

.t-cell-name { color: var(--t-text-bright); font-weight: 500; }
.t-cell-accent { color: var(--t-accent); font-weight: bold; }
.t-cell-muted { color: var(--t-text-dim); font-style: italic; }

/* --- Tabs --- */
.t-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--t-border);
}

.t-tab {
    padding: 10px 18px;
    background: none;
    border: none;
    color: var(--t-text-muted);
    cursor: pointer;
    font-size: 14px;
    font-family: var(--t-font);
    border-bottom: 2px solid transparent;
    transition: color var(--t-speed);
}

.t-tab:hover { color: var(--t-text-bright); }
.t-tab.active {
    color: var(--t-accent);
    border-bottom-color: var(--t-accent);
}

/* --- Filter row --- */
.t-filter-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    align-items: center;
}

.t-filter-row .t-select {
    width: auto;
    padding: 6px 10px;
}

/* --- Status / Toast --- */
.t-status {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: var(--t-radius);
}

.t-status-success { color: var(--t-success); }
.t-status-error { color: var(--t-error); }
.t-status-warning { color: var(--t-warning); }
.t-status-info { color: var(--t-info); }

.t-toast {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 20px;
    background: rgba(76, 175, 80, 0.9);
    color: #fff;
    font-size: 12px;
    border-radius: 6px;
    z-index: 10;
    animation: t-fadeout 2s forwards;
}
.t-toast.error { background: rgba(244, 67, 54, 0.9); }

@keyframes t-fadeout { 0%, 70% { opacity: 1; } 100% { opacity: 0; } }

/* --- Badge --- */
.t-badge {
    display: inline-block;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
}

.t-badge-warning {
    color: var(--t-warning);
    background: rgba(255, 179, 0, 0.15);
}

.t-badge-cat {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 3px;
    text-transform: uppercase;
}

/* --- Loading / Hint --- */
.t-loading { color: var(--t-text-muted); }
.t-error { color: var(--t-error); }
.t-hint { font-size: 13px; color: var(--t-text-label); }
.t-hint-small { font-size: 10px; color: var(--t-text-dim); }

/* --- Dropzone --- */
.t-dropzone {
    border: 2px dashed var(--t-border);
    border-radius: var(--t-radius-lg);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    color: var(--t-text-dim);
    transition: border-color var(--t-speed), color var(--t-speed);
}
.t-dropzone:hover,
.t-dropzone.dragover {
    border-color: var(--t-accent);
    color: var(--t-accent);
}

/* --- Overlay on canvas areas --- */
.t-canvas-status {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.7);
    color: var(--t-text-muted);
    font-size: 10px;
    font-family: var(--t-font-mono);
}

.t-canvas-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 16px 32px;
    background: rgba(0, 0, 0, 0.85);
    color: var(--t-accent);
    font-size: 14px;
    border-radius: var(--t-radius-lg);
    z-index: 10;
}

/* --- Utility --- */
.t-flex { display: flex; }
.t-flex-col { display: flex; flex-direction: column; }
.t-gap-sm { gap: 4px; }
.t-gap { gap: 8px; }
.t-gap-lg { gap: 16px; }
.t-grow { flex: 1; }
.t-shrink-0 { flex-shrink: 0; }
.t-overflow-auto { overflow: auto; }
.t-overflow-hidden { overflow: hidden; }
.t-mono { font-family: var(--t-font-mono); }

/* --- Threat level colors (BalanceViewer) --- */
.t-threat-trivial   { background: #1a2e1a; }
.t-threat-easy      { background: #1e2e1a; }
.t-threat-fair      { background: #2e2e1a; }
.t-threat-dangerous { background: #2e1e1a; }
.t-threat-deadly    { background: #3e1010; }

.t-threat-trivial   .t-threat-badge { color: #6f6; }
.t-threat-easy      .t-threat-badge { color: #8f8; }
.t-threat-fair      .t-threat-badge { color: #ff0; }
.t-threat-dangerous .t-threat-badge { color: #f80; }
.t-threat-deadly    .t-threat-badge { color: #f44; }

/* Threat matrix cells */
.t-cell-trivial   { background: #1a3a1a; color: #6f6; }
.t-cell-easy      { background: #1e3e1a; color: #8f8; }
.t-cell-fair      { background: #3e3e1a; color: #ff0; }
.t-cell-dangerous { background: #3e1e1a; color: #f80; }
.t-cell-deadly    { background: #4e1010; color: #f44; }

/* --- Height level colors (WorldEditor, HeightGrid) --- */
.t-h-0 { background: #1a1a2e; }
.t-h-1 { background: #2d5a27; }
.t-h-2 { background: #4a8a3a; }
.t-h-3 { background: #66BB6A; }

/* --- Category badges (EconomyViewer) --- */
.t-cat-processing { background: #2a3a2a; color: #8f8; }
.t-cat-weapon     { background: #3a2a2a; color: #f88; }
.t-cat-armor      { background: #2a2a3a; color: #88f; }
.t-cat-tool       { background: #3a3a2a; color: #ff8; }

/* --- Flow items (EconomyViewer Material Flow) --- */
.t-flow-raw       { background: #1a2a1a; color: #8c8; }
.t-flow-processed { background: #2a2a1a; color: #cc8; }
.t-flow-equip     { background: #1a1a2a; color: #88c; }

/* --- Gallery Picker (DataGalleryPicker) --- */
.gp-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--t-bg-inset);
    border: 1px solid var(--t-border);
    border-radius: var(--t-radius);
    padding: 4px 10px;
    color: var(--t-text);
    cursor: pointer;
    font-size: 13px;
    min-width: 120px;
}
.gp-trigger:hover { border-color: var(--t-accent); }

.gp-trigger-thumb {
    width: 24px;
    height: 24px;
    image-rendering: pixelated;
    border-radius: 2px;
    flex-shrink: 0;
}

.gp-trigger-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gp-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 300;
}

.gp-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 680px;
    max-width: 90vw;
    max-height: 80vh;
    background: var(--t-bg-surface);
    border: 1px solid var(--t-border);
    border-radius: var(--t-radius-lg);
    z-index: 301;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.gp-toolbar {
    display: flex;
    gap: 8px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--t-border);
    align-items: center;
    flex-shrink: 0;
}

.gp-search { flex: 1; }
.gp-filter { max-width: 140px; }
.gp-close-btn { padding: 2px 8px; font-size: 14px; }

.gp-grid {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 6px;
    align-content: start;
}

.gp-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 4px;
    border: 2px solid transparent;
    border-radius: var(--t-radius);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.gp-cell:hover { background: rgba(76, 201, 240, 0.05); border-color: var(--t-border); }
.gp-cell.selected { border-color: var(--t-accent); background: rgba(76, 201, 240, 0.10); }

.gp-cell canvas {
    width: 48px;
    height: 48px;
    image-rendering: pixelated;
}

.gp-cell-info {
    text-align: center;
    min-width: 0;
    width: 100%;
}

.gp-cell-name {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--t-text-bright, #fff);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gp-cell-id {
    display: block;
    font-size: 10px;
    color: var(--t-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.gp-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 32px;
    color: var(--t-text-muted);
    font-size: 14px;
}