/* ============================================
   SECTIONS.CSS - Extensible Section System
   Add new sections easily by following patterns
   ============================================ */

/*
   HOW TO ADD A NEW SECTION:

   1. Create a <section> in HTML with class="section"
   2. Add section--dark or section--alt for background variants
   3. Use .section__header for title blocks
   4. Use existing grid classes or create custom layouts

   Example:
   <section class="section section--dark" id="new-section">
       <div class="container">
           <div class="section__header">
               <span class="section__tag">Tag</span>
               <h2 class="section__title">Title</h2>
           </div>
           <!-- Your content here -->
       </div>
   </section>
*/

/* ============================================
   TIMELINE SECTION (Example Extension)
   ============================================ */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: var(--space-3xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-2xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-3xl) - 5px);
    top: 0;
    width: 12px;
    height: 12px;
    background: var(--color-accent);
}

.timeline-item__date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.1em;
}

.timeline-item__title {
    margin-bottom: var(--space-sm);
}

.timeline-item__text {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
    width: 100%;
    background: none;
    border: none;
    padding: var(--space-xl) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.faq-item__question:hover {
    color: var(--color-accent);
}

.faq-item__icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
}

.faq-item__icon::before,
.faq-item__icon::after {
    content: '';
    position: absolute;
    background: currentColor;
    transition: transform var(--transition-base);
}

.faq-item__icon::before {
    width: 100%;
    height: 2px;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

.faq-item__icon::after {
    width: 2px;
    height: 100%;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
}

.faq-item.active .faq-item__icon::after {
    transform: translateX(-50%) rotate(90deg);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-item__answer {
    max-height: 500px;
}

.faq-item__answer-content {
    padding-bottom: var(--space-xl);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   FEATURES GRID
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--color-border);
}

.feature {
    background: var(--color-primary);
    padding: var(--space-2xl);
    text-align: center;
    transition: background var(--transition-base);
}

.feature:hover {
    background: var(--color-surface);
}

.feature__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    border: 2px solid var(--color-accent);
}

.feature__title {
    margin-bottom: var(--space-sm);
}

.feature__text {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.testimonial {
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    position: relative;
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: var(--space-md);
    left: var(--space-lg);
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.2;
    line-height: 1;
}

.testimonial__text {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.testimonial__avatar {
    width: 48px;
    height: 48px;
    background: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-accent);
}

.testimonial__name {
    font-weight: 600;
    font-size: 0.9375rem;
}

.testimonial__role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   COMPARISON TABLE
   ============================================ */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    background: var(--color-surface);
}

.comparison-table td {
    color: var(--color-text-muted);
}

.comparison-table tr:hover td {
    background: var(--color-surface);
}

.comparison-table .highlight {
    color: var(--color-accent);
    font-weight: 600;
}

.comparison-table .check {
    color: #22c55e;
}

.comparison-table .cross {
    color: var(--color-accent);
}

/* ============================================
   RESOURCE CARDS
   ============================================ */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.resource-card {
    display: block;
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.resource-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.resource-card__type {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.resource-card__title {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.resource-card__desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.resource-card__link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.resource-card__link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.resource-card:hover .resource-card__link::after {
    transform: translateX(4px);
}

@media (max-width: 768px) {
    .resources-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   PROGRESS TRACKER
   ============================================ */
.progress-tracker {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: var(--space-3xl);
}

.progress-tracker::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-border);
}

.progress-step {
    position: relative;
    text-align: center;
    flex: 1;
}

.progress-step__dot {
    width: 40px;
    height: 40px;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.progress-step.completed .progress-step__dot {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.progress-step.active .progress-step__dot {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.progress-step__label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.progress-step.active .progress-step__label,
.progress-step.completed .progress-step__label {
    color: var(--color-text);
}

/* ============================================
   ALERT / NOTIFICATION BOXES
   ============================================ */
.alert {
    padding: var(--space-lg);
    border-left: 4px solid var(--color-border);
    background: var(--color-surface);
    margin-bottom: var(--space-lg);
}

.alert--warning {
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.alert--success {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.05);
}

.alert--danger {
    border-color: var(--color-accent);
    background: rgba(220, 38, 38, 0.05);
}

.alert--info {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.05);
}

.alert__title {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.alert__text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ============================================
   TAB SYSTEM
   ============================================ */
.tabs {
    margin-bottom: var(--space-2xl);
}

.tabs__nav {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-xl);
}

.tabs__btn {
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
}

.tabs__btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tabs__btn:hover {
    color: var(--color-text);
}

.tabs__btn.active {
    color: var(--color-accent);
}

.tabs__btn.active::after {
    transform: scaleX(1);
}

.tabs__panel {
    display: none;
}

.tabs__panel.active {
    display: block;
}

/* ============================================
   BADGE / TAG SYSTEM
   ============================================ */
.badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.badge--accent {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.badge--success {
    background: #22c55e;
    border-color: #22c55e;
}

.badge--warning {
    background: #f59e0b;
    border-color: #f59e0b;
    color: #000;
}

/* ============================================
   ICON LIST
   ============================================ */
.icon-list {
    display: grid;
    gap: var(--space-md);
}

.icon-list__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.icon-list__icon {
    width: 24px;
    height: 24px;
    background: var(--color-accent);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.icon-list__text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ============================================
   NUMBER BLOCKS
   ============================================ */
.number-blocks {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.number-block {
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.number-block__value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.number-block__label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .number-blocks {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   SPLIT SECTION LAYOUT
   ============================================ */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.split--reverse {
    direction: rtl;
}

.split--reverse > * {
    direction: ltr;
}

.split__content {
    max-width: 500px;
}

.split__visual {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .split {
        grid-template-columns: 1fr;
    }

    .split--reverse {
        direction: ltr;
    }
}