/* FAQ Section Styles */
:root {
    /* Color System */
    --primary: #4361EE;
    --primary-dark: #3F37C9;
    --primary-light: #4895EF;
    --primary-hover: #3A56E5;
    
    /* Text Colors */
    --text-primary: #333;
    --text-secondary: #8f9cb3;
    --text-muted: #6B7280;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-hover: #f8fafc;
    
    /* Border Colors */
    --border-light: #dfe1e5;
    --border-dark: #cdd1d5;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    
    /* Z-index layers */
    --z-base: 1;
    --z-above: 2;
    --z-modal: 1000;
}

/* Common FAQ Section Styles */
.faq-section, .tools-faq {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, var(--bg-primary), var(--bg-secondary));
    position: relative;
    isolation: isolate;
}

.faq-section::before, .tools-faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-light), transparent);
    z-index: var(--z-base);
}

.faq-container, .tools-faq .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
}

.faq-header, .tools-faq-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.faq-title, .tools-faq-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.faq-title::after, .tools-faq-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

.faq-title:hover::after, .tools-faq-title:hover::after {
    width: 80px;
    background: var(--primary-dark);
}

.faq-subtitle, .tools-faq-subtitle {
    font-size: clamp(0.875rem, 2vw, 1.1rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* FAQ List Styles */
.faq-list, .tools-faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    position: relative;
}

/* FAQ Card Style */
.faq-item, .tools-faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s ease-out forwards;
    box-shadow: var(--shadow-sm);
    will-change: transform, opacity;
}

.faq-item:hover, .tools-faq-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.faq-item.active, .tools-faq-item.active {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

/* Vertical accent line */
.faq-item::before, .tools-faq-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--primary);
    border-radius: var(--radius-sm);
    transition: height var(--transition-normal);
    z-index: var(--z-above);
}

.faq-item:hover::before, .tools-faq-item:hover::before {
    height: 100%;
}

/* Question Styles */
.faq-question, .tools-faq-question {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-normal);
    position: relative;
    z-index: var(--z-base);
}

.faq-question:hover, .tools-faq-question:hover {
    background: var(--bg-hover);
    padding-left: calc(var(--spacing-md) + var(--spacing-sm));
}

.faq-question h3, .tools-faq-question h3 {
    margin: 0;
    font-size: clamp(1rem, 2vw, 1.1rem);
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.4;
}

.faq-question i, .tools-faq-question i {
    color: var(--primary);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.faq-item.active .faq-question i, .tools-faq-item.active .tools-faq-question i {
    transform: rotate(180deg);
    color: var(--primary-dark);
}

/* Answer Styles */
.faq-answer, .tools-faq-answer {
    padding: 0;
    color: var(--text-secondary);
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
    z-index: var(--z-base);
}

.faq-item.active .faq-answer, .tools-faq-item.active .tools-faq-answer {
    padding: 0 var(--spacing-md) var(--spacing-md);
    max-height: 500px;
}

.faq-answer p, .tools-faq-answer p {
    margin-bottom: var(--spacing-sm);
}

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

.faq-answer ul, .tools-faq-answer ul {
    list-style-type: disc;
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

.faq-answer li, .tools-faq-answer li {
    margin-bottom: var(--spacing-xs);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Staggered Animation Delays */
.faq-item:nth-child(1), .tools-faq-item:nth-child(1) { animation-delay: 0.1s; }
.faq-item:nth-child(2), .tools-faq-item:nth-child(2) { animation-delay: 0.2s; }
.faq-item:nth-child(3), .tools-faq-item:nth-child(3) { animation-delay: 0.3s; }
.faq-item:nth-child(4), .tools-faq-item:nth-child(4) { animation-delay: 0.4s; }
.faq-item:nth-child(5), .tools-faq-item:nth-child(5) { animation-delay: 0.5s; }

/* Responsive Design */
@media (max-width: 768px) {
    .faq-section, .tools-faq {
        padding: var(--spacing-lg) 0;
    }

    .faq-container, .tools-faq .container {
        padding: 0 var(--spacing-md);
    }

    .faq-question, .tools-faq-question {
        padding: var(--spacing-md);
    }

    .faq-answer, .tools-faq-answer {
        font-size: 0.95rem;
    }
}

/* Accessibility */
.faq-question, .tools-faq-question {
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.faq-question:focus, .tools-faq-question:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.faq-question:focus:not(:focus-visible), .tools-faq-question:focus:not(:focus-visible) {
    outline: none;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .faq-item, .tools-faq-item,
    .faq-question, .tools-faq-question,
    .faq-answer, .tools-faq-answer,
    .faq-question i, .tools-faq-question i {
        transition: none;
        animation: none;
    }
}

/* Print Styles */
@media print {
    .faq-section, .tools-faq {
        padding: 0;
        background: none;
    }

    .faq-item, .tools-faq-item {
        break-inside: avoid;
        border: 1px solid var(--border-dark);
        box-shadow: none;
    }

    .faq-item.active .faq-answer, .tools-faq-item.active .tools-faq-answer {
        max-height: none;
    }

    .faq-question i, .tools-faq-question i {
        display: none;
    }
}

/* High Contrast Mode */
@media (forced-colors: active) {
    .faq-item, .tools-faq-item {
        border: 1px solid CanvasText;
    }

    .faq-question:focus, .tools-faq-question:focus {
        outline: 2px solid CanvasText;
    }
}