/* Papercuts Accordion Styles with Dynamic Customization */

/* CSS Custom Properties with Fallbacks */
.papercuts-accordion {
    /* Dynamic variables set by PHP (with fallbacks) */
    --papercuts-transition-length: 1000ms;
    --papercuts-border-width: 1px;
    --papercuts-border-color: #e0e0e0;
    --papercuts-border-radius: 8px;
    --papercuts-header-font: inherit;
    --papercuts-header-font-size: 16px;
    --papercuts-header-font-weight: 600;
    --papercuts-header-font-color: #1e1e1e;
    --papercuts-header-bg-color: #f8f9fa;
    --papercuts-body-bg-color: #ffffff;
    --papercuts-selection-color: #007cba;
    --papercuts-hover-color: #f0f8ff;
    
    /* Computed colors for hover states */
    --papercuts-header-hover-color: color-mix(in srgb, var(--papercuts-header-bg-color) 90%, #000000 10%);
    --papercuts-header-open-color: color-mix(in srgb, var(--papercuts-header-bg-color) 85%, #007cba 15%);
    
    /* Main accordion container */
    border: var(--papercuts-border-width) solid var(--papercuts-border-color);
    border-radius: var(--papercuts-border-radius);
    overflow: hidden;
    background: var(--papercuts-body-bg-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.accordion-item {
    border-bottom: var(--papercuts-border-width) solid var(--papercuts-border-color);
    background: var(--papercuts-body-bg-color);
    /* Remove any existing transitions to start fresh */
    transition: none;
}

.accordion-item:last-child {
    border-bottom: none;
}

/* DYNAMIC HEADER STYLING */
.accordion-header {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: var(--papercuts-header-bg-color);
    border: none;
    border-bottom: var(--papercuts-border-width) solid transparent;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--papercuts-header-font);
    font-size: var(--papercuts-header-font-size);
    font-weight: var(--papercuts-header-font-weight);
    text-align: left;
    outline: none;
    position: relative;
    
    /* SMOOTH BACKGROUND TRANSITION using dynamic length */
    transition: 
        background-color calc(var(--papercuts-transition-length) * 0.3) ease,
        border-color calc(var(--papercuts-transition-length) * 0.3) ease,
        transform 150ms ease;
}

/* Fallback for browsers that don't support color-mix */
.accordion-header:hover {
    background: var(--papercuts-hover-color, #e9ecef);
    transform: translateY(-1px);
}

/* Better hover for modern browsers */
@supports (color: color-mix(in srgb, red 50%, blue)) {
    .accordion-header:hover {
        background: var(--papercuts-hover-color);
    }
}

.accordion-header:focus {
    background: var(--papercuts-hover-color, #e7f3ff);
    box-shadow: inset 0 0 0 2px var(--papercuts-selection-color, #007cba);
}

.accordion-header:active {
    transform: translateY(0);
}

/* OPEN STATE HEADER with dynamic colors */
.accordion-item--open .accordion-header {
    background: var(--papercuts-hover-color, #e7f3ff);
    border-bottom-color: var(--papercuts-border-color);
}

@supports (color: color-mix(in srgb, red 50%, blue)) {
    .accordion-item--open .accordion-header {
        background: color-mix(in srgb, var(--papercuts-header-bg-color) 85%, var(--papercuts-selection-color) 15%);
    }
}

.accordion-title {
    margin: 0;
    font-weight: var(--papercuts-header-font-weight);
    font-size: var(--papercuts-header-font-size);
    color: var(--papercuts-header-font-color);
    font-family: var(--papercuts-header-font);
    flex: 1;
    padding-right: 1rem;
}

/* SMOOTH ICON ROTATION with dynamic timing */
.accordion-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: var(--papercuts-header-font-color);
    /* DYNAMIC ROTATION TIMING */
    transition: transform var(--papercuts-transition-length) cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
    opacity: 0.7;
}

.accordion-item--open .accordion-icon {
    transform: rotate(180deg);
    opacity: 1;
}

/* DYNAMIC CONTENT TRANSITIONS */
.accordion-content {
    background: var(--papercuts-body-bg-color);
    overflow: hidden;
    
    /* DYNAMIC TRANSITION TIMING */
    transition: 
        max-height var(--papercuts-transition-length) cubic-bezier(0.4, 0, 0.2, 1),
        opacity var(--papercuts-transition-length) cubic-bezier(0.4, 0, 0.2, 1),
        padding var(--papercuts-transition-length) cubic-bezier(0.4, 0, 0.2, 1);
}

/* CLOSED STATE */
.accordion-content.accordion-content--closed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
}

/* OPEN STATE */
.accordion-content.accordion-content--open {
    max-height: 2000px; /* Large enough for most content */
    opacity: 1;
    padding-top: 0;
    padding-bottom: 0;
}

/* CONTENT INNER PADDING with dynamic background */
.accordion-content-inner {
    padding: 1.5rem;
    background: var(--papercuts-body-bg-color);
    
    /* DYNAMIC PADDING TRANSITION */
    transition: padding var(--papercuts-transition-length) cubic-bezier(0.4, 0, 0.2, 1);
}

/* When closed, reduce inner padding for smoother collapse */
.accordion-content--closed .accordion-content-inner {
    padding-top: 0;
    padding-bottom: 0;
}

/* LOADING STATE - For immediate feedback */
.accordion-item.accordion-item--transitioning .accordion-header {
    background: color-mix(in srgb, var(--papercuts-header-bg-color) 95%, #007cba 5%);
}

/* SEQUENTIAL OPERATION FEEDBACK */
.papercuts-accordion[data-sequential-in-progress="true"] .accordion-header {
    cursor: wait;
    position: relative;
}

.papercuts-accordion[data-sequential-in-progress="true"] .accordion-header:hover {
    transform: none; /* Disable hover effects during sequence */
}

/* Subtle pulse effect during sequential operations with dynamic colors */
.papercuts-accordion[data-sequential-in-progress="true"] .accordion-header:not(.accordion-item--open .accordion-header) {
    animation: subtle-pulse calc(var(--papercuts-transition-length) * 2) ease-in-out infinite;
}

@keyframes subtle-pulse {
    0%, 100% { 
        background: var(--papercuts-header-bg-color);
        opacity: 1;
    }
    50% { 
        background: color-mix(in srgb, var(--papercuts-header-bg-color) 95%, #007cba 5%);
        opacity: 0.95;
    }
}

/* Fallback animation for browsers without color-mix */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
    @keyframes subtle-pulse {
        0%, 100% { 
            background: var(--papercuts-header-bg-color, #f8f9fa);
            opacity: 1;
        }
        50% { 
            background: #f0f8ff;
            opacity: 0.95;
        }
    }
}

/* RESPONSIVE ADJUSTMENTS */
@media (max-width: 768px) {
    .accordion-header {
        padding: 1rem;
    }
    
    .accordion-content-inner {
        padding: 1rem;
    }
    
    /* Slightly faster transitions on mobile - still respects custom timing but reduces it */
    .accordion-content {
        transition-duration: calc(var(--papercuts-transition-length) * 0.8);
    }
    
    .accordion-icon {
        transition-duration: calc(var(--papercuts-transition-length) * 0.8);
    }
}

/* ACCESSIBILITY IMPROVEMENTS */
.accordion-header:focus-visible {
    outline: 2px solid var(--papercuts-selection-color, #007cba);
    outline-offset: 2px;
}

/* DYNAMIC BORDERS */
.accordion-item {
    transition: border-color calc(var(--papercuts-transition-length) * 0.3) ease;
}

.accordion-item--open {
    border-color: var(--papercuts-selection-color, #007cba);
}

/* PREMIUM FEEL - Subtle shadows with dynamic border radius */
.accordion-item--open {
    box-shadow: 
        0 2px 8px color-mix(in srgb, var(--papercuts-selection-color, rgba(0, 124, 186, 0.1)) 50%, transparent 50%),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

/* Fallback for browsers without color-mix */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
    .accordion-item--open {
        box-shadow: 
            0 2px 8px rgba(0, 124, 186, 0.1),
            inset 0 1px 0 rgba(255, 255, 255, 0.8);
    }
}

/* ADVANCED: Dynamic border radius inheritance */
.accordion-item:first-child .accordion-header {
    border-top-left-radius: calc(var(--papercuts-border-radius) - var(--papercuts-border-width));
    border-top-right-radius: calc(var(--papercuts-border-radius) - var(--papercuts-border-width));
}

.accordion-item:last-child:not(.accordion-item--open) .accordion-header {
    border-bottom-left-radius: calc(var(--papercuts-border-radius) - var(--papercuts-border-width));
    border-bottom-right-radius: calc(var(--papercuts-border-radius) - var(--papercuts-border-width));
}

.accordion-item:last-child .accordion-content {
    border-bottom-left-radius: calc(var(--papercuts-border-radius) - var(--papercuts-border-width));
    border-bottom-right-radius: calc(var(--papercuts-border-radius) - var(--papercuts-border-width));
}

/* PRINT STYLES */
@media print {
    .accordion-content {
        max-height: none !important;
        opacity: 1 !important;
        display: block !important;
    }
    
    .accordion-item--open .accordion-icon {
        transform: none;
    }
    
    /* Use custom colors for print */
    .accordion-header {
        background: var(--papercuts-header-bg-color) !important;
        color: var(--papercuts-header-font-color) !important;
    }
    
    .accordion-content {
        background: var(--papercuts-body-bg-color) !important;
    }
}

/* REDUCED MOTION PREFERENCE - respect but still use custom timing (just faster) */
@media (prefers-reduced-motion: reduce) {
    .accordion-content,
    .accordion-icon,
    .accordion-header,
    .accordion-content-inner {
        transition-duration: min(200ms, calc(var(--papercuts-transition-length) * 0.2)) !important;
    }
}

/* HIGH CONTRAST MODE with dynamic colors */
@media (prefers-contrast: high) {
    .accordion-header {
        border: calc(var(--papercuts-border-width) * 2) solid var(--papercuts-header-font-color);
    }
    
    .accordion-item--open .accordion-header {
        background: HighlightText;
        color: Highlight;
    }
    
    .accordion-title {
        color: var(--papercuts-header-font-color);
    }
}

/* DARK THEME SUPPORT - enhance custom colors for dark mode */
@media (prefers-color-scheme: dark) {
    .papercuts-accordion {
        /* Slightly adjust box shadow for dark mode */
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    /* Ensure text remains readable in dark mode */
    .accordion-title {
        color: var(--papercuts-header-font-color);
    }
    
    .accordion-icon {
        color: var(--papercuts-header-font-color);
    }
}

/* EDITOR PREVIEW ENHANCEMENTS - make editor match frontend styles */
.editor-styles-wrapper .papercuts-accordion {
    /* Inherit all the same custom properties in editor */
    border: var(--papercuts-border-width) solid #e0e0e0;
    border-radius: var(--papercuts-border-radius);
    background: var(--papercuts-body-bg-color);
}

.editor-styles-wrapper .accordion-header {
    font-family: var(--papercuts-header-font);
    font-size: var(--papercuts-header-font-size);
    font-weight: var(--papercuts-header-font-weight);
    background: var(--papercuts-header-bg-color);
    color: var(--papercuts-header-font-color);
}

.editor-styles-wrapper .accordion-title {
    font-family: var(--papercuts-header-font);
    font-size: var(--papercuts-header-font-size);
    font-weight: var(--papercuts-header-font-weight);
    color: var(--papercuts-header-font-color);
}

.editor-styles-wrapper .accordion-content {
    background: var(--papercuts-body-bg-color);
}