/* ============================================
   FlowHaxa PAA Engine Styles
   ============================================ */

:root {
    --primary: #0d9488;
    --primary-dark: #0f766e;
    --primary-light: #5eead4;
    --accent: #f59e0b;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --max-width: 800px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    color: var(--text);
    line-height: 1.7;
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   HEADER
   ============================================ */
.paa-site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(255,255,255,0.95);
}

.paa-header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.paa-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
}

.paa-logo span { color: var(--primary); }

.paa-nav {
    display: flex;
    gap: 1.5rem;
}

.paa-nav a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s;
}

.paa-nav a:hover { color: var(--primary); }

@media (max-width: 600px) {
    .paa-nav { display: none; }
}

/* ============================================
   BREADCRUMB
   ============================================ */
.paa-breadcrumb {
    background: var(--bg-alt);
    padding: 0.75rem 1.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-light);
}

.paa-breadcrumb .paa-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.paa-breadcrumb a {
    color: var(--text-light);
    text-decoration: none;
}

.paa-breadcrumb a:hover { color: var(--primary); }

.paa-breadcrumb-sep {
    margin: 0 0.5rem;
    color: var(--border);
}

.paa-breadcrumb-current {
    color: var(--text);
    font-weight: 500;
}

/* ============================================
   CONTAINER
   ============================================ */
.paa-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   ARTICLE HEADER
   ============================================ */
.paa-header {
    padding: 2.5rem 0 1.5rem;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 2rem;
}

.paa-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.paa-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.paa-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.paa-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.paa-tag {
    background: var(--bg-alt);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-light);
}

/* ============================================
   ANSWER BOX
   ============================================ */
.paa-answer {
    margin: 2rem 0;
}

.paa-answer-box {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f0fdfa 0%, #fff 100%);
    border: 1px solid var(--primary-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
}

.paa-icon {
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.paa-answer-content p {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text);
    margin: 0;
}

/* ============================================
   SECTIONS
   ============================================ */
.paa-section {
    margin: 2.5rem 0;
}

.paa-section-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-light);
}

/* ============================================
   KEY POINTS
   ============================================ */
.paa-key-points {
    list-style: none;
    padding: 0;
}

.paa-key-points li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.6;
}

.paa-key-points li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* ============================================
   RELATED ARTICLES
   ============================================ */
.paa-related-grid {
    display: grid;
    gap: 0.75rem;
}

.paa-related-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--bg-alt);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid var(--border-light);
}

.paa-related-card:hover {
    background: var(--bg);
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
    color: var(--primary);
}

.paa-related-card svg {
    flex-shrink: 0;
    color: var(--primary);
}

/* ============================================
   CTA BOX
   ============================================ */
.paa-cta-section {
    margin: 2.5rem 0;
}

.paa-cta-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
}

.paa-cta-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.paa-cta-text {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 1.25rem;
}

.paa-cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: #fff;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.paa-cta-button:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* ============================================
   FAQ ACCORDION
   ============================================ */
.paa-faq-section {
    margin: 2.5rem 0;
}

.paa-faq-list {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

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

.paa-faq-question {
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.2s;
}

.paa-faq-question:hover {
    background: var(--bg-alt);
}

.paa-faq-question::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 400;
}

.paa-faq-item[open] .paa-faq-question::after {
    content: '−';
}

.paa-faq-answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.9375rem;
}

/* ============================================
   MORE QUESTIONS
   ============================================ */
.paa-more-questions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.paa-more-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: var(--bg-alt);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid var(--border-light);
}

.paa-more-link:hover {
    background: var(--bg);
    border-color: var(--primary-light);
    color: var(--primary);
}

.paa-more-link svg {
    flex-shrink: 0;
    color: var(--primary);
}

/* ============================================
   LISTING PAGE
   ============================================ */
.paa-listing-header {
    text-align: center;
    padding: 3rem 1.5rem 2rem;
    background: linear-gradient(135deg, var(--bg-alt) 0%, var(--bg) 100%);
    border-bottom: 1px solid var(--border);
}

.paa-listing-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.paa-listing-subtitle {
    color: var(--text-light);
    font-size: 1.125rem;
}

.paa-question-grid {
    display: grid;
    gap: 1rem;
    padding: 2rem 0;
}

.paa-question-card {
    display: block;
    padding: 1.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
}

.paa-question-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--primary-light);
}

.paa-question-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--primary-dark);
}

.paa-question-card p {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.6;
}

.paa-question-card .paa-card-meta {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   FOOTER
   ============================================ */
.paa-site-footer {
    background: var(--bg-dark);
    color: #94a3b8;
    padding: 3rem 0 0;
    margin-top: 4rem;
}

.paa-footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 2rem;
}

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

.paa-footer-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 0.5rem;
}

.paa-footer-logo span { color: var(--primary-light); }

.paa-footer-links h4 {
    color: #fff;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.paa-footer-links a {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    transition: color 0.2s;
}

.paa-footer-links a:hover { color: #fff; }

.paa-footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
}

.paa-footer-bottom a {
    color: #94a3b8;
    text-decoration: none;
    margin-left: 1rem;
}

.paa-footer-bottom a:hover { color: #fff; }

/* ============================================
   HOME PAGE
   ============================================ */
.paa-hero {
    text-align: center;
    padding: 4rem 1.5rem;
    background: linear-gradient(135deg, var(--bg-alt) 0%, #fff 100%);
}

.paa-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.paa-hero h1 span { color: var(--primary); }

.paa-hero p {
    color: var(--text-light);
    font-size: 1.125rem;
    max-width: 500px;
    margin: 0 auto 1.5rem;
}

.paa-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.paa-stat {
    text-align: center;
}

.paa-stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

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