@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #4C84FF;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    --background-color: #f5f5f5;
    --text-primary: #333;
    --text-secondary: #666;
    --border-color: #e0e0e0;
}

* {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 80%;
}

body {
    background: var(--background-color);
    padding: 4rem 2rem;
}

.container {
    max-width: 90rem;
    margin: 0 auto;
}

h1 {
    font-size: 3rem;
    color: var(--text-primary);
    margin-bottom: 4rem;
    text-align: center;
}

/* Accordion Section */
.accordion-section {
    margin-bottom: 4rem;
}

.accordion-section h2 {
    font-size: 2.2rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

/* Accordion */
.accordion {
    background: #fff;
    border-radius: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* Accordion Item */
.accordion-item {
    border-bottom: 1px solid var(--border-color);
}

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

/* Accordion Header */
.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2rem 2.5rem;
    background: #fff;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.accordion-header:hover {
    background: #f8f9fa;
}

.accordion-item.active .accordion-header {
    background: #f8f9fa;
}

.accordion-title {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--text-primary);
}

.accordion-title i {
    font-size: 2rem;
    color: var(--primary-color);
}

/* Accordion Icon */
.accordion-icon {
    font-size: 1.6rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
    color: var(--primary-color);
}

/* Accordion Content */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: #fff;
}

.accordion-item.active .accordion-content {
    max-height: 100rem;
}

.accordion-content p,
.accordion-content ul {
    padding: 0 2.5rem 2rem 2.5rem;
    font-size: 1.5rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.accordion-content ul {
    padding-left: 5rem;
    padding-top: 1rem;
}

.accordion-content li {
    margin-bottom: 1rem;
}

/* Colored Variants */
.accordion-item.success .accordion-title i {
    color: var(--success-color);
}

.accordion-item.success.active .accordion-header {
    background: rgba(16, 185, 129, 0.05);
    border-left: 4px solid var(--success-color);
}

.accordion-item.success.active .accordion-icon {
    color: var(--success-color);
}

.accordion-item.warning .accordion-title i {
    color: var(--warning-color);
}

.accordion-item.warning.active .accordion-header {
    background: rgba(245, 158, 11, 0.05);
    border-left: 4px solid var(--warning-color);
}

.accordion-item.warning.active .accordion-icon {
    color: var(--warning-color);
}

.accordion-item.info .accordion-title i {
    color: var(--info-color);
}

.accordion-item.info.active .accordion-header {
    background: rgba(59, 130, 246, 0.05);
    border-left: 4px solid var(--info-color);
}

.accordion-item.info.active .accordion-icon {
    color: var(--info-color);
}

.accordion-item.danger .accordion-title i {
    color: var(--danger-color);
}

.accordion-item.danger.active .accordion-header {
    background: rgba(239, 68, 68, 0.05);
    border-left: 4px solid var(--danger-color);
}

.accordion-item.danger.active .accordion-icon {
    color: var(--danger-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.accordion-item.active .accordion-content > * {
    animation: fadeIn 0.4s ease;
}

/* Responsive */
@media (max-width: 768px) {
    html {
        font-size: 70%;
    }

    .accordion-header {
        padding: 1.5rem 2rem;
    }

    .accordion-title {
        font-size: 1.6rem;
        gap: 1rem;
    }

    .accordion-content p,
    .accordion-content ul {
        padding: 0 2rem 1.5rem 2rem;
    }

    .accordion-content ul {
        padding-left: 4rem;
    }
}

/* Accessibility */
.accordion-header:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: -3px;
}

.accordion-header:focus:not(:focus-visible) {
    outline: none;
}

/* Smooth scrolling for content */
.accordion-content {
    will-change: max-height;
}