/**
 * Mijn Bijbel - Canvas Styles
 * Infinite Canvas Desktop Interface
 */

/* ==========================================================================
   CSS Variables for Canvas
   ========================================================================== */

:root {
    --canvas-bg: var(--bg-primary);
    --canvas-dot: rgba(0, 0, 0, 0.08);
}

.theme-dark {
    --canvas-dot: rgba(255, 255, 255, 0.05);
}

.theme-warm {
    --canvas-dot: rgba(0, 0, 0, 0.06);
}

/* ==========================================================================
   Canvas Viewport
   ========================================================================== */

.canvas-viewport {
    display: none; /* Hidden by default, shown via media query */
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    background: var(--canvas-bg);
    /* Subtle dot grid pattern */
    background-image: radial-gradient(var(--canvas-dot) 1px, transparent 1px);
    background-size: 20px 20px;
    background-position: 0 0;
    cursor: grab;
    /* Allow scrolling within tabs but not on canvas itself */
}

.canvas-viewport.panning {
    cursor: grabbing;
}

/* ==========================================================================
   Canvas World (Infinite Surface)
   ========================================================================== */

.canvas-world {
    position: absolute;
    width: 10000px;
    height: 10000px;
    transform-origin: 0 0;
    /* Transform set via JavaScript: translate(x, y) scale(zoom) */
    will-change: transform;
    pointer-events: none; /* Let clicks pass through to viewport for panning */
}

/* Smooth transitions for programmatic moves (not during drag) */
.canvas-world.smooth-transform {
    transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Canvas Tabs
   ========================================================================== */

.canvas-tab {
    position: absolute;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: box-shadow 150ms ease, transform 150ms ease;
    pointer-events: auto; /* Tabs should receive events */
}

.canvas-tab:hover {
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

.canvas-tab.dragging {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    cursor: grabbing;
    transform: scale(1.02);
}

.canvas-tab.selected {
    box-shadow: 0 0 0 2px var(--brand-color), var(--shadow-xl);
    z-index: 100;
}

/* Tab header on canvas */
.canvas-tab .tab-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    cursor: grab;
    flex-shrink: 0;
}

.canvas-tab.dragging .tab-header {
    cursor: grabbing;
}

/* Reference input - looks like text but editable */
.canvas-tab .tab-reference-input {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    border: none;
    outline: none;
    padding: var(--space-1) var(--space-2);
    margin: calc(-1 * var(--space-1));
    margin-right: var(--space-3);
    border-radius: var(--radius-md);
    cursor: text;
    flex: 1;
    min-width: 0;
    transition: background-color var(--transition-fast);
}

.canvas-tab .tab-reference-input:hover {
    background-color: var(--bg-tertiary);
}

.canvas-tab .tab-reference-input:focus {
    background-color: var(--bg-tertiary);
}

.canvas-tab .tab-reference-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

/* Translation badge in controls */
.canvas-tab .tab-translation-badge {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    padding: 0 var(--space-3);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    height: 32px;
    display: flex;
    align-items: center;
}

/* Tab content on canvas - scrollable */
.canvas-tab .tab-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    cursor: auto;
}

/* Tab nav on canvas */
.canvas-tab .tab-nav {
    flex-shrink: 0;
}

/* ==========================================================================
   Snap Guides
   ========================================================================== */

.snap-guide {
    position: absolute;
    background: var(--brand-color);
    pointer-events: none;
    z-index: 10000;
    opacity: 0;
    transition: opacity 100ms ease;
}

.snap-guide.visible {
    opacity: 0.8;
}

.snap-guide-h {
    height: 1px;
    left: 0;
    right: 0;
}

.snap-guide-v {
    width: 1px;
    top: 0;
    bottom: 0;
}

/* ==========================================================================
   Floating Toolbar
   ========================================================================== */

.floating-toolbar {
    display: none; /* Hidden by default, shown via media query */
    position: fixed;
    left: 50%;
    top: var(--space-4);
    transform: translateX(-50%);
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.toolbar-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border: none;
    background: transparent;
    cursor: pointer;
}

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

.toolbar-btn:active {
    transform: scale(0.95);
}

.toolbar-btn.active {
    background: var(--brand-light);
    color: var(--brand-color);
}

.toolbar-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.toolbar-btn .material-symbols-outlined {
    font-size: 20px;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 0 var(--space-1);
}

.zoom-level {
    min-width: 48px;
    text-align: center;
    font-size: var(--text-sm);
    font-family: var(--font-ui);
    color: var(--text-muted);
    font-weight: 500;
    user-select: none;
}

/* ==========================================================================
   Minimap
   ========================================================================== */

.canvas-minimap {
    display: none; /* Hidden by default, shown via media query */
    position: fixed;
    right: var(--space-4);
    bottom: var(--space-4);
    width: 200px;
    height: 150px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
}

.minimap-content {
    position: relative;
    width: 100%;
    height: 100%;
}

.minimap-tab {
    position: absolute;
    background: var(--brand-light);
    border: 1px solid var(--brand-color);
    border-radius: 2px;
    pointer-events: none;
}

.minimap-viewport {
    position: absolute;
    border: 2px solid var(--brand-color);
    background: rgba(56, 108, 158, 0.15);
    border-radius: 2px;
    pointer-events: none;
}

/* ==========================================================================
   Tab Type Selector Modal
   ========================================================================== */

.tab-type-selector {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.tab-type-selector.active {
    display: flex;
}

.tab-type-grid {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
}

.tab-type-grid h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

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

.tab-type-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-type-option:hover {
    border-color: var(--brand-color);
    background: var(--brand-light);
}

.tab-type-option .material-symbols-outlined {
    font-size: 32px;
    color: var(--brand-color);
}

.tab-type-option span:last-child {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

/* ==========================================================================
   Canvas Selection
   ========================================================================== */

.canvas-selection-box {
    position: absolute;
    border: 2px solid var(--brand-color);
    background: var(--brand-light);
    pointer-events: none;
    z-index: 9999;
}

/* ==========================================================================
   Desktop Modals (Canvas-specific)
   ========================================================================== */

.canvas-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.canvas-modal.active {
    display: flex;
}

.canvas-modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    max-height: 80vh;
    width: 90%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.canvas-modal-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.canvas-modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    transition: background-color var(--transition-fast);
    border: none;
    background: transparent;
    cursor: pointer;
}

.canvas-modal-close:hover {
    background: var(--bg-tertiary);
}

.canvas-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
}

/* ==========================================================================
   Keyboard Shortcuts Overlay
   ========================================================================== */

.keyboard-shortcuts {
    position: fixed;
    bottom: var(--space-6);
    left: var(--space-6);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: var(--z-tooltip);
}

.keyboard-shortcuts.visible {
    opacity: 1;
    visibility: visible;
}

.keyboard-shortcuts kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-ui);
    font-size: var(--text-xs);
    font-weight: 600;
}