/**
 * Cognitive Studio Intent Palette Styles
 * ITERATION 293: Categorized, collapsible intent blocks with oversized background icons
 * 
 * This file contains all styles for the intent blocks panel including:
 * - Category headers with collapsible sections
 * - Intent block styling
 * - Macro blocks styling
 * - Search functionality
 */

/* ===================================
   INTENT PALETTE CONTAINER
   =================================== */
.blocks-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-3);
    background: var(--bg-primary);
}

/* Palette Controls (Search + Collapse All) */
.palette-controls {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    padding: 0 var(--space-2);
}

.blocks-search {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.collapse-all-btn {
    padding: var(--space-2) var(--space-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.collapse-all-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--accent);
    color: var(--text-primary);
}

/* ===================================
   SECTION SEPARATORS (Intents vs Macros)
   =================================== */
.palette-section {
    margin-bottom: var(--space-6);
}

.palette-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    padding: var(--space-3) var(--space-2);
    margin-bottom: var(--space-3);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.palette-section-icon {
    font-size: 20px;
}

/* ===================================
   CATEGORY GROUPS
   =================================== */
.intent-category-group {
    margin-bottom: var(--space-4);
}

.intent-category-group.hidden {
    display: none;
}

/* Category Header with Oversized Background Icon - DARK BLUE */
.category-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    background: linear-gradient(135deg, #1e3a5f 0%, #2a4a6f 100%); /* Dark blue gradient */
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 15px; /* Slightly larger */
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
    margin-bottom: var(--space-2);
    user-select: none;
    border: 1px solid rgba(66, 153, 225, 0.3); /* Subtle blue border */
}

.category-header:hover {
    background: linear-gradient(135deg, #2a4a6f 0%, #3a5a7f 100%); /* Lighter blue on hover */
    border-color: rgba(66, 153, 225, 0.5);
    box-shadow: 0 2px 8px rgba(66, 153, 225, 0.2);
}

/* Oversized Background Icon - CENTERED and LESS FADED */
.category-header::before {
    content: attr(data-icon);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 90px; /* Larger icon */
    opacity: 0.15; /* Less faded - was 0.08 */
    pointer-events: none;
    line-height: 1;
}

.category-header-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    z-index: 1;
    position: relative;
}

.category-icon {
    font-size: 20px; /* Slightly larger */
    opacity: 0.9;
}

.category-name {
    font-weight: 600;
    color: var(--text-primary);
}

.category-count {
    margin-left: auto;
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.category-toggle {
    z-index: 1;
    position: relative;
    font-size: 14px;
    color: var(--text-primary);
    transition: transform var(--transition);
}

.category-header.collapsed .category-toggle {
    transform: rotate(-90deg);
}

/* Category Blocks Container */
.category-blocks {
    display: flex;
    flex-direction: column;
    gap: var(--space-2); /* Increased gap between blocks */
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    max-height: 5000px;
    opacity: 1;
}

.category-blocks.collapsed {
    max-height: 0;
    opacity: 0;
    margin: 0;
}

/* ===================================
   INTENT BLOCK STYLES - LARGER & MORE PADDING
   =================================== */
.intent-block {
    display: flex;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: grab;
    transition: all var(--transition);
    overflow: hidden;
}

.intent-block:hover {
    border-color: var(--accent);
    transform: translateX(2px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.intent-block:active {
    cursor: grabbing;
}

.intent-block.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.intent-block-content {
    flex: 1;
    padding: var(--space-5) var(--space-6); /* More padding - was space-3 space-4 */
    min-width: 0;
}

.intent-block-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 15px; /* Larger text - was var(--font-size-md) which is 13px */
    margin-bottom: var(--space-1);
}

.intent-block-description {
    font-size: 13px; /* Larger - was var(--font-size-sm) which is 11px */
    color: var(--text-muted);
    line-height: var(--line-height-normal);
}

.intent-block-icon-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 28px; /* Increased right padding from 12px to 16px */
    background: rgba(255, 255, 255, 0.05);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 0;
}

.intent-block-icon {
    font-size: 48px; /* Large base size */
    line-height: 1;
    display: block;
}

/* For taller blocks, make icon even bigger */
.intent-block:has(.intent-block-description) .intent-block-icon {
    font-size: 54px;
}

/* Special Intent Type Styling */
.intent-block--gate {
    border-left: 3px solid #8B5CF6;
}

.intent-block--monitor {
    border-left: 3px solid #F59E0B;
}

.intent-block--object {
    border-left: 3px solid #10B981;
}

.intent-block--memory {
    border-left: 3px solid #3B82F6;
}

.intent-block--loop {
    border-left: 3px solid #EC4899;
}

.intent-block--communication {
    border-left: 3px solid #14B8A6;
}

.intent-block--decision {
    border-left: 3px solid #F97316;
}

.intent-block--router {
    border-left: 3px solid #8B5CF6;
}

/* ===================================
   MACRO BLOCKS
   =================================== */
.macro-block {
    border-left: 3px solid #667eea;
}

.macro-block .intent-block-icon {
    font-size: 24px;
}

/* ===================================
   LOADING & EMPTY STATES
   =================================== */
.loading-blocks {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    color: var(--text-muted);
}

.loading-spinner {
    font-size: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.empty-blocks {
    text-align: center;
    padding: var(--space-6);
    color: var(--text-muted);
}

.empty-category {
    text-align: center;
    padding: var(--space-4);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* Special Intent Type Styling */
.intent-block--gate {
    border-left: 3px solid #8B5CF6; /* Purple for gates */
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(139, 92, 246, 0.08) 100%); /* Light purple tint */
}

.intent-block--gate:hover {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, rgba(139, 92, 246, 0.15) 100%); /* Brighter on hover */
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1200px) {
    .category-header::before {
        font-size: 70px;
    }
}