/**
 * FAQ Accordion Modern Animations
 * 
 * Advanced CSS animations for FAQ accordion with smooth transitions,
 * micro-interactions, and modern UI patterns
 * 
 * @package STEPJAM_Theme
 * @version 1.0.0
 */

/* ============================================
   Core Animation Variables & Settings
   ============================================ */

:root {
    --faq-animation-duration: 400ms;
    --faq-animation-easing: cubic-bezier(0.4, 0, 0.2, 1);
    --faq-animation-easing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --faq-stagger-delay: 50ms;
    --faq-hover-scale: 1.02;
    --faq-focus-glow: 0 0 0 3px rgba(0, 247, 255, 0.3);
}

/* ============================================
   FAQ Container Animations
   ============================================ */

/* Staggered entrance animation for FAQ items */
.faq-container {
    opacity: 0;
    transform: translateY(20px);
    animation: faqContainerFadeIn 600ms var(--faq-animation-easing) forwards;
}

@keyframes faqContainerFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Individual FAQ item staggered animation */
.faq-accordion-item {
    opacity: 0;
    transform: translateY(15px);
    animation: faqItemSlideIn var(--faq-animation-duration) var(--faq-animation-easing) forwards;
}

.faq-accordion-item:nth-child(1) { animation-delay: 100ms; }
.faq-accordion-item:nth-child(2) { animation-delay: 150ms; }
.faq-accordion-item:nth-child(3) { animation-delay: 200ms; }
.faq-accordion-item:nth-child(4) { animation-delay: 250ms; }
.faq-accordion-item:nth-child(5) { animation-delay: 300ms; }
.faq-accordion-item:nth-child(6) { animation-delay: 350ms; }
.faq-accordion-item:nth-child(7) { animation-delay: 400ms; }
.faq-accordion-item:nth-child(8) { animation-delay: 450ms; }
.faq-accordion-item:nth-child(n+9) { animation-delay: 500ms; }

@keyframes faqItemSlideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Question Button Advanced Interactions
   ============================================ */

.faq-question-button {
    position: relative;
    overflow: hidden;
    transition: all var(--faq-animation-duration) var(--faq-animation-easing);
    transform-origin: center;
    will-change: transform, background-color, box-shadow;
}

/* Hover state with subtle scale and glow */
.faq-question-button:hover {
    transform: translateY(-1px);
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(0,247,255,0.05) 100%);
    box-shadow: 0 4px 20px rgba(0, 247, 255, 0.1);
}

/* Focus state accessibility */
.faq-question-button:focus {
    outline: none;
    box-shadow: var(--faq-focus-glow);
}

/* Active state micro-interaction */
.faq-question-button:active {
    transform: translateY(0) scale(0.98);
}

/* Ripple effect on click */
.faq-question-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 247, 255, 0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 400ms ease-out, height 400ms ease-out;
    pointer-events: none;
    z-index: 0;
}

.faq-question-button.ripple-active::before {
    width: 300px;
    height: 300px;
}

/* Ensure content stays above ripple */
.faq-question-button > * {
    position: relative;
    z-index: 1;
}

/* ============================================
   Question Text Advanced Typography
   ============================================ */

.faq-question-text h3 {
    transition: all 300ms var(--faq-animation-easing);
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.faq-question-button:hover .faq-question-text h3 {
    background: linear-gradient(135deg, #00f7ff 0%, #ffffff 50%, #00f7ff 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: faqTextShimmer 2s ease-in-out infinite;
}

@keyframes faqTextShimmer {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* ============================================
   Icon Advanced Animations
   ============================================ */

.faq-toggle-icon {
    transition: all var(--faq-animation-duration) var(--faq-animation-easing-bounce);
    transform-origin: center;
}

.faq-question-button:hover .faq-toggle-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Plus icon animations */
.faq-icon-plus {
    transition: all var(--faq-animation-duration) var(--faq-animation-easing);
    transform-origin: center;
}

/* Minus icon animations */
.faq-icon-minus {
    transition: all var(--faq-animation-duration) var(--faq-animation-easing);
    transform-origin: center;
    position: absolute;
    top: 0;
    left: 0;
}

/* Enhanced icon states */
.faq-accordion-item[data-expanded="true"] .faq-icon-plus {
    opacity: 0;
    transform: rotate(180deg) scale(0.5);
}

.faq-accordion-item[data-expanded="true"] .faq-icon-minus {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.faq-accordion-item[data-expanded="false"] .faq-icon-plus {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.faq-accordion-item[data-expanded="false"] .faq-icon-minus {
    opacity: 0;
    transform: rotate(-180deg) scale(0.5);
}

/* ============================================
   Answer Container Advanced Animations
   ============================================ */

.faq-answer-container {
    transition: all var(--faq-animation-duration) var(--faq-animation-easing);
    transform-origin: top;
    overflow: hidden;
    position: relative;
}

/* Collapsed state */
.faq-answer-container[data-state="collapsed"] {
    height: 0 !important;
    opacity: 0;
    transform: scaleY(0.95) translateY(-10px);
    visibility: hidden;
}

/* Expanding state */
.faq-answer-container[data-state="expanding"] {
    opacity: 1;
    transform: scaleY(1) translateY(0);
    visibility: visible;
    /* Height is set dynamically by JavaScript */
}

/* Expanded state */
.faq-answer-container[data-state="expanded"] {
    height: auto !important;
    opacity: 1;
    transform: scaleY(1) translateY(0);
    visibility: visible;
}

/* Collapsing state */
.faq-answer-container[data-state="collapsing"] {
    opacity: 0;
    transform: scaleY(0.95) translateY(-10px);
    visibility: visible;
    /* Height transitions to 0 */
}

/* ============================================
   Answer Content Typography & Effects
   ============================================ */

.faq-answer-content {
    transition: all calc(var(--faq-animation-duration) + 100ms) ease-out;
    transform: translateY(0);
}

.faq-answer-container[data-state="collapsed"] .faq-answer-content,
.faq-answer-container[data-state="collapsing"] .faq-answer-content {
    transform: translateY(-20px);
    opacity: 0.5;
}

.faq-answer-container[data-state="expanding"] .faq-answer-content,
.faq-answer-container[data-state="expanded"] .faq-answer-content {
    transform: translateY(0);
    opacity: 1;
}

/* Content text effects */
.faq-answer-text {
    line-height: 1.7;
    transition: color 300ms ease;
}

.faq-answer-text p {
    margin-bottom: 1em;
    transition: transform 200ms ease;
}

.faq-answer-text p:last-child {
    margin-bottom: 0;
}

/* Content hover effects */
.faq-accordion-item:hover .faq-answer-text {
    color: rgba(255, 255, 255, 0.95);
}

/* ============================================
   Border & Divider Animations
   ============================================ */

.faq-accordion-item {
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: border-color var(--faq-animation-duration) ease;
}

.faq-accordion-item::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00f7ff, transparent);
    transition: width var(--faq-animation-duration) var(--faq-animation-easing);
}

.faq-accordion-item:hover::after {
    width: 100%;
}

.faq-accordion-item[data-expanded="true"]::after {
    width: 100%;
    background: linear-gradient(90deg, #00f7ff, #00f7ff, #00f7ff);
}

/* ============================================
   Responsive Animation Adjustments
   ============================================ */

@media (max-width: 767px) {
    :root {
        --faq-animation-duration: 350ms;
        --faq-hover-scale: 1.01;
    }
    
    .faq-question-button:hover {
        transform: none; /* Disable hover transform on mobile */
        background: rgba(255,255,255,0.05);
        box-shadow: none;
    }
    
    .faq-question-button:active {
        transform: scale(0.99);
        background: rgba(0, 247, 255, 0.1);
    }
}

/* ============================================
   Accessibility & Motion Preferences
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    :root {
        --faq-animation-duration: 200ms;
        --faq-stagger-delay: 25ms;
    }
    
    .faq-question-button:hover {
        transform: none;
    }
    
    .faq-toggle-icon {
        transition: opacity 200ms ease;
    }
    
    @keyframes faqTextShimmer {
        0%, 100% { background-position: 0% 50%; }
        50% { background-position: 0% 50%; }
    }
}

/* ============================================
   Performance Optimizations
   ============================================ */

.faq-accordion-item {
    contain: layout style paint;
}

.faq-answer-container {
    will-change: height, opacity, transform;
}

.faq-question-button {
    backface-visibility: hidden;
    perspective: 1000px;
}

.faq-toggle-icon {
    backface-visibility: hidden;
}

/* ============================================
   Loading States
   ============================================ */

.faq-loading .faq-accordion-item {
    opacity: 0.3;
    pointer-events: none;
}

.faq-loading .faq-accordion-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(0, 247, 255, 0.1), transparent);
    animation: faqShimmer 1.5s infinite;
    z-index: 1;
}

@keyframes faqShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}