/**
 * Generic Off-Canvas Module Styles - Blocksy Compatible
 *
 * Follows Blocksy's standard offcanvas implementation with proper state management.
 * Uses CSS custom properties and GPU-accelerated transforms for smooth animations.
 *
 * @package BlocksyChild
 * @since 1.0.0
 */

/* ========================================
   1. CSS VARIABLES - BLOCKSY STANDARD
   ======================================== */
:root {
    /* Blocksy Standard Variables */
    --side-panel-width: 500px;
    --panel-padding: 24px;
    --side-panel-offset: 0px;
    --side-panel-border-radius: 0px;
    --theme-panel-reveal-right: 0;
    --theme-panel-reveal-left: 0;

    /* Custom Variables for Styling */
    --offcanvas-bg: #ffffff;
    --offcanvas-border-color: #e5e7eb;
    --offcanvas-text-color: #1f2937;
    --offcanvas-heading-color: #111827;
    --offcanvas-heading-size: 18px;
    --offcanvas-heading-weight: 600;
}

/* ========================================
   2. PANEL STRUCTURE - BLOCKSY STANDARD
   ======================================== */

/* Base Panel - Blocksy Standard */
.ct-panel {
    position: fixed;
    z-index: 999999;
    inset: var(--admin-bar, 0px) 0 0 0;
    opacity: 0;
    display: none;
    pointer-events: none;
    transition: opacity 0.25s ease-in-out;
}

/* Panel Active State */
body[data-panel] .ct-panel.active {
    display: flex;
}

body[data-panel*='in'] .ct-panel.active {
    opacity: 1;
    pointer-events: auto;
}

/* Panel Inner Container - Side Panels */
[data-behaviour*='side'] .ct-panel-inner {
    position: relative;
    height: 100%;
    max-width: var(--side-panel-width);
    background-color: var(--offcanvas-bg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.25s ease-in-out;
    will-change: transform;
}

/* Left Side Panel */
[data-behaviour='left-side'] .ct-panel-inner {
    transform: translate3d(calc(-100% - var(--side-panel-offset)), 0, 0);
}

body[data-panel*='in:left'] [data-behaviour='left-side'] .ct-panel-inner {
    transform: translate3d(var(--theme-panel-reveal-left), 0, 0);
}

/* Right Side Panel */
[data-behaviour='right-side'] .ct-panel-inner {
    margin-left: auto;
    transform: translate3d(calc(100% + var(--side-panel-offset)), 0, 0);
}

body[data-panel*='in:right'] [data-behaviour='right-side'] .ct-panel-inner {
    transform: translate3d(var(--theme-panel-reveal-right), 0, 0);
}

/* Modal Mode (Center) */
[data-behaviour='modal'] .ct-panel-inner {
    margin: auto;
    max-width: 600px;
    max-height: 90vh;
    border-radius: var(--side-panel-border-radius);
    transform: scale(0.95);
    opacity: 0;
    transition: transform 0.25s ease-in-out, opacity 0.25s ease-in-out;
}

body[data-panel*='in'] [data-behaviour='modal'] .ct-panel-inner {
    transform: scale(1);
    opacity: 1;
}

/* ========================================
   3. PANEL HEADER
   ======================================== */

/* Header actions bar */
.ct-panel .ct-panel-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--panel-padding);
    border-bottom: 1px solid var(--offcanvas-border-color);
    background-color: var(--offcanvas-bg);
    min-height: 60px;
    flex-shrink: 0;
}

/* Panel heading */
.ct-panel .ct-panel-heading {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--offcanvas-heading-size);
    font-weight: var(--offcanvas-heading-weight);
    color: var(--offcanvas-heading-color);
    margin: 0;
}

/* Heading icon */
.ct-panel .ct-panel-heading-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ct-panel .ct-panel-heading-icon svg,
.ct-panel .ct-panel-heading-icon .ct-icon {
    width: 32px;
    height: 32px;
}

/* Count badge */
.ct-panel .offcanvas-count {
    font-size: 14px;
    font-weight: 400;
    color: #6b7280;
}

/* Close button */
.ct-panel .ct-toggle-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.ct-panel .ct-toggle-close:hover {
    background-color: #f3f4f6;
}

.ct-panel .ct-toggle-close .ct-icon {
    width: 24px;
    height: 24px;
    fill: var(--offcanvas-text-color);
}

/* ========================================
   4. PANEL CONTENT
   ======================================== */

/* Content wrapper */
.ct-panel .ct-panel-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

/* Content inner */
.ct-panel .ct-panel-content-inner {
    padding: var(--panel-padding);
}

/* Loading state */
.ct-panel .ct-panel-content-inner.loading {
    position: relative;
    min-height: 200px;
    opacity: 0.5;
    pointer-events: none;
}

.ct-panel .ct-panel-content-inner.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid #e5e7eb;
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: offcanvas-spin 0.8s linear infinite;
}

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

/* ========================================
   5. SCROLLBAR STYLING
   ======================================== */

/* Custom scrollbar for webkit browsers */
.ct-panel .ct-panel-content::-webkit-scrollbar {
    width: 8px;
}

.ct-panel .ct-panel-content::-webkit-scrollbar-track {
    background: #f9fafb;
}

.ct-panel .ct-panel-content::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 4px;
}

.ct-panel .ct-panel-content::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* ========================================
   6. RESPONSIVE DESIGN
   ======================================== */

/* Tablet */
@media (max-width: 999px) {
    :root {
        --panel-padding: 20px;
        --offcanvas-heading-size: 16px;
    }
}

/* Mobile */
@media (max-width: 689px) {
    :root {
        --panel-padding: 16px;
        --offcanvas-heading-size: 15px;
    }

    .ct-panel .ct-toggle-close {
        width: 36px;
        height: 36px;
    }

    .ct-panel .ct-toggle-close .ct-icon {
        width: 20px;
        height: 20px;
    }
}

/* ========================================
   7. ACCESSIBILITY
   ======================================== */

/* Focus styles */
.ct-panel .ct-toggle-close:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* Inert attribute support */
.ct-panel[inert] {
    pointer-events: none;
    user-select: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .ct-panel,
    .ct-panel .ct-panel-inner {
        transition: none !important;
    }
}

/* ========================================
   8. BODY SCROLL LOCK - BLOCKSY STANDARD
   ======================================== */

/* Prevent body scroll when panel is open */
body[data-panel] {
    overflow: hidden;
}

/* ========================================
   9. BACKDROP OVERLAY
   ======================================== */

/* Backdrop for modal and side panels */
.ct-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgba(18, 21, 25, 0.6);
    opacity: 0;
    transition: opacity 0.25s ease-in-out;
    pointer-events: none;
}

body[data-panel*='in'] .ct-panel.active::before {
    opacity: 1;
    pointer-events: auto;
}

/* Modal mode - darker backdrop */
[data-behaviour='modal']::before {
    background-color: rgba(18, 21, 25, 0.8);
}