/**
 * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 *
 * Ancient Steppe & Siberia Ancestry Product Page Styling
 * Steppe-themed design with lapis lazuli and gold palette.
 * Inspired by Central Asian heritage: Silk Road, nomadic empires, and steppe civilizations.
 */

/* ========================================
   CSS Variables - Central Asia Steppe Palette (Lapis & Gold)
   ======================================== */
:root {
    --aca-deep: #0A0E14;
    --aca-dark: #0F1620;
    --aca-warm: #141C28;
    --aca-lapis: #26619C;
    --aca-lapis-light: #3B7AB8;
    --aca-gold: #D4AF37;
    --aca-gold-dim: #B8962E;
    --aca-sand: #E8E0D0;
    --aca-text: #F5F0E8;
    --aca-text-muted: rgba(245, 240, 232, 0.7);
    --aca-border: rgba(245, 240, 232, 0.12);
    --aca-shadow: rgba(0, 0, 0, 0.4);
    --aca-transition: 0.3s ease;
    --aca-transition-fast: 0.2s ease;
    --aca-transition-medium: 0.4s ease;
    --aca-transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --aca-font-display: 'Cinzel Decorative', Georgia, serif;
    --aca-font-body: 'Cormorant Garamond', Georgia, serif;
    --aca-section-padding: 120px;
    --aca-section-padding-mobile: 80px;
}

/* ========================================
   GOOGLE FONTS
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Cinzel+Decorative:wght@400;700&family=Cormorant+Garamond:ital,wght@0,400;0,600;1,400&display=swap');

/* ========================================
   BODY OVERRIDES
   ======================================== */
body:has(.aca-main) {
    background-color: var(--aca-deep) !important;
    background-image: none !important;
}

.aca-main {
    background-color: var(--aca-deep);
    color: var(--aca-text);
    font-family: var(--aca-font-body);
    font-size: 1.125rem;
    line-height: 1.75;
    overflow-x: hidden;
    min-height: 100vh;
    margin: 0;
    position: relative;
    z-index: 1;
}

body:has(.aca-main) #wrapper,
body:has(.aca-main) #content-wrapper,
body:has(.aca-main) #content-fluid,
body:has(.aca-main) > div {
    background: transparent !important;
}

body:has(.aca-main) footer {
    background-color: var(--aca-deep) !important;
}

.aca-main p {
    color: var(--aca-text-muted);
}

/* ========================================
   ACCESSIBILITY - Skip Link
   ======================================== */
.aca-skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    background: var(--aca-gold);
    color: var(--aca-deep);
    font-weight: 600;
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 8px 8px;
    transition: top var(--aca-transition-fast);
}

.aca-skip-link:focus {
    top: 0;
    outline: 3px solid var(--aca-sand);
    outline-offset: 2px;
}

/* ========================================
   SCROLL PROGRESS INDICATOR
   ======================================== */
.aca-scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--aca-lapis), var(--aca-gold));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ========================================
   PAGE NAVIGATION DOTS
   ======================================== */
.aca-page-nav {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 1000;
}

.aca-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(245, 240, 232, 0.25);
    border: 2px solid transparent;
    transition: all var(--aca-transition-fast);
    position: relative;
}

.aca-nav-dot:hover,
.aca-nav-dot.active {
    background: var(--aca-lapis);
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(38, 97, 156, 0.5);
}

.aca-nav-dot::before {
    content: attr(data-tooltip);
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    padding: 6px 14px;
    background: rgba(10, 14, 20, 0.95);
    color: var(--aca-sand);
    font-size: 12px;
    white-space: nowrap;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--aca-transition-fast);
}

.aca-nav-dot:hover::before {
    opacity: 1;
}

@media (max-width: 992px) {
    .aca-page-nav {
        display: none;
    }
}

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */
.aca-back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--aca-lapis);
    color: var(--aca-sand);
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--aca-transition-medium);
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(38, 97, 156, 0.35);
    font-size: 1rem;
}

.aca-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.aca-back-to-top:hover {
    background: var(--aca-gold);
    color: var(--aca-deep);
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(212, 175, 55, 0.5);
}

/* ========================================
   SECTION BASE STYLES
   ======================================== */
.aca-section {
    padding: var(--aca-section-padding) 0;
    position: relative;
}

.aca-chapter-header {
    text-align: center;
    margin-bottom: 60px;
}

.aca-chapter-number {
    display: inline-block;
    font-family: var(--aca-font-display);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--aca-gold);
    margin-bottom: 16px;
}

.aca-section-title {
    font-family: var(--aca-font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--aca-sand);
    margin: 0 0 16px;
    line-height: 1.2;
}

.aca-section-subtitle {
    font-size: 1.25rem;
    color: var(--aca-text-muted);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.75;
}

/* ========================================
   HERO SECTION
   ======================================== */
.aca-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.aca-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.aca-hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
    opacity: 0.18;
}

.aca-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 14, 20, 0.5) 0%,
        rgba(10, 14, 20, 0.82) 50%,
        rgba(10, 14, 20, 0.98) 100%
    );
}

.aca-hero-particles {
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 20px,
            rgba(38, 97, 156, 0.03) 20px,
            rgba(38, 97, 156, 0.03) 40px
        ),
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 20px,
            rgba(212, 175, 55, 0.02) 20px,
            rgba(212, 175, 55, 0.02) 40px
        );
    animation: acaPatternShift 30s ease-in-out infinite;
}

@keyframes acaPatternShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.aca-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.aca-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(38, 97, 156, 0.15);
    border: 1px solid rgba(38, 97, 156, 0.35);
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--aca-lapis-light);
    margin-bottom: 32px;
}

.aca-hero-title {
    font-family: var(--aca-font-display);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 24px;
    color: var(--aca-text-muted);
}

.aca-title-prelude {
    display: block;
    font-style: italic;
}

.aca-title-accent {
    display: block;
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 700;
    font-style: normal;
    color: var(--aca-sand);
    margin-top: 16px;
    background: linear-gradient(135deg, var(--aca-sand) 0%, var(--aca-gold) 50%, var(--aca-lapis-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.aca-hero-lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--aca-text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

/* Hero Stats */
.aca-hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.aca-stat-item {
    text-align: center;
}

.aca-stat-value {
    display: block;
    font-family: var(--aca-font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--aca-gold);
}

.aca-stat-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--aca-text-muted);
    margin-top: 4px;
}

.aca-stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(245, 240, 232, 0.2);
}

/* Hero Price */
.aca-hero-price {
    margin-bottom: 32px;
}

.aca-price-tag {
    display: inline-flex;
    flex-direction: column;
    padding: 16px 32px;
    background: rgba(15, 22, 32, 0.8);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.aca-price-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--aca-text-muted);
}

.aca-price-amount {
    font-family: var(--aca-font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--aca-gold);
}

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

/* Hero CTAs */
.aca-hero-cta {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.aca-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--aca-lapis) 0%, #1A4A75 100%);
    color: var(--aca-sand);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all var(--aca-transition-medium);
    box-shadow: 0 4px 20px rgba(38, 97, 156, 0.4);
}

.aca-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(38, 97, 156, 0.55);
    color: var(--aca-sand);
    text-decoration: none;
}

.aca-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    background: transparent;
    color: var(--aca-sand);
    font-weight: 500;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 50px;
    border: 1px solid rgba(245, 240, 232, 0.35);
    cursor: pointer;
    transition: all var(--aca-transition-medium);
}

.aca-btn-secondary:hover {
    background: rgba(245, 240, 232, 0.08);
    border-color: var(--aca-gold);
    color: var(--aca-sand);
    text-decoration: none;
}

/* Trust Badges */
.aca-trust-badges {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.aca-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--aca-text-muted);
}

.aca-trust-item i {
    color: var(--aca-lapis);
}

/* Scroll Indicator */
.aca-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--aca-text-muted);
    text-decoration: none;
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: acaScrollBounce 2s ease-in-out infinite;
}

.aca-scroll-indicator:hover {
    color: var(--aca-gold);
}

@keyframes acaScrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ========================================
   ANIMATIONS
   ======================================== */
.aca-main .animate-fade-in {
    opacity: 0;
    animation: acaFadeIn 0.8s ease forwards;
}

.aca-main .animate-fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: acaFadeInUp 0.8s ease forwards;
}

.aca-main .delay-1 { animation-delay: 0.2s; }
.aca-main .delay-2 { animation-delay: 0.4s; }
.aca-main .delay-3 { animation-delay: 0.6s; }
.aca-main .delay-4 { animation-delay: 0.8s; }

@keyframes acaFadeIn {
    to { opacity: 1; }
}

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

/* ========================================
   FEATURE CARDS - 8 Cultural Periods
   ======================================== */
.aca-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.aca-feature-card {
    padding: 28px 24px;
    background: rgba(245, 240, 232, 0.03);
    border: 1px solid rgba(245, 240, 232, 0.08);
    border-radius: 12px;
    transition: all var(--aca-transition-medium);
    position: relative;
    overflow: hidden;
}

.aca-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--aca-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--aca-transition-medium);
}

.aca-feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--aca-lapis);
    background: rgba(38, 97, 156, 0.06);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.aca-feature-card:hover::before {
    transform: scaleX(1);
}

.aca-feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.35rem;
    margin-bottom: 18px;
    background: rgba(38, 97, 156, 0.2);
    color: var(--aca-lapis-light);
}

.aca-feature-card h3 {
    font-family: var(--aca-font-display);
    font-size: 1.125rem;
    color: var(--aca-sand);
    margin-bottom: 4px;
}

.aca-feature-card p {
    font-size: 0.9375rem;
    margin-top: 12px;
    line-height: 1.65;
}

/* ========================================
   MAP PLACEHOLDER
   ======================================== */
.aca-map-preview {
    background: linear-gradient(180deg, var(--aca-deep) 0%, var(--aca-dark) 100%);
}

.aca-map-placeholder {
    padding: 60px 40px;
    background: rgba(245, 240, 232, 0.03);
    border: 1px solid rgba(245, 240, 232, 0.08);
    border-radius: 16px;
    text-align: center;
}

.aca-map-placeholder-content i {
    color: var(--aca-lapis);
    margin-bottom: 24px;
}

.aca-map-placeholder-content h3 {
    font-family: var(--aca-font-display);
    font-size: 1.5rem;
    color: var(--aca-sand);
    margin-bottom: 16px;
}

.aca-map-placeholder-content p {
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   PRICING SECTION - Theme Bridge
   ======================================== */
.aca-pricing-section {
    --rpc-bg: var(--aca-deep);
    --rpc-overlay: rgba(10, 14, 20, 0.8);
    --rpc-text-primary: var(--aca-text);
    --rpc-text-secondary: rgba(245, 240, 232, 0.9);
    --rpc-text-muted: var(--aca-text-muted);
    --rpc-accent: var(--aca-lapis);
    --rpc-accent-dim: var(--aca-gold-dim);
    --rpc-cta-bg: var(--aca-lapis);
    --rpc-cta-text: var(--aca-sand);
    --rpc-cta-hover: var(--aca-gold-dim);
    --rpc-border: var(--aca-border);
    --rpc-font-display: var(--aca-font-display);
    --rpc-font-body: var(--aca-font-body);

    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
}

.aca-pricing-section .rpc-pricing-bg img {
    opacity: 0.18;
    filter: grayscale(30%) sepia(10%);
}

.aca-pricing-section .rpc-pricing-overlay {
    background:
        radial-gradient(ellipse at center, transparent 0%, var(--rpc-bg) 70%),
        linear-gradient(0deg, var(--rpc-bg) 0%, transparent 40%);
}

/* ========================================
   FAQ SECTION
   ======================================== */
.aca-faq {
    background: linear-gradient(180deg, var(--aca-dark) 0%, var(--aca-deep) 100%);
}

.aca-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.aca-faq-item {
    border-bottom: 1px solid rgba(245, 240, 232, 0.1);
    transition: border-color var(--aca-transition-fast);
}

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

.aca-faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 24px 0;
    background: transparent;
    border: none;
    color: var(--aca-sand);
    font-family: var(--aca-font-display);
    font-size: 1.125rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: color var(--aca-transition-fast);
}

.aca-faq-question:hover {
    color: var(--aca-gold);
}

.aca-faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--aca-lapis);
    flex-shrink: 0;
    margin-left: 16px;
    transition: transform var(--aca-transition-medium);
}

.aca-faq-item.active .aca-faq-question::after {
    transform: rotate(45deg);
}

.aca-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--aca-transition-slow);
}

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

.aca-faq-answer-inner {
    padding: 0 0 24px;
}

.aca-faq-answer p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.75;
    color: var(--aca-text-muted);
}

/* ========================================
   RELATED PRODUCTS
   ======================================== */
.aca-related-products {
    padding: var(--aca-section-padding) 0;
}

.aca-related-title {
    font-family: var(--aca-font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--aca-sand);
    text-align: center;
    margin-bottom: 40px;
}

.aca-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.aca-related-card {
    background: rgba(245, 240, 232, 0.03);
    border: 1px solid rgba(245, 240, 232, 0.08);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--aca-transition-medium);
}

.aca-related-card:hover {
    border-color: var(--aca-lapis);
    transform: translateY(-4px);
}

.aca-related-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.aca-related-content {
    padding: 24px;
}

.aca-related-content h4 {
    font-family: var(--aca-font-display);
    font-size: 1.125rem;
    color: var(--aca-sand);
    margin-bottom: 12px;
}

.aca-related-content p {
    font-size: 0.9375rem;
    margin-bottom: 16px;
}

.aca-related-link {
    color: var(--aca-lapis-light);
    font-weight: 600;
    text-decoration: none;
}

.aca-related-link:hover {
    color: var(--aca-gold);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
    .aca-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .aca-section {
        padding: var(--aca-section-padding-mobile) 0;
    }

    .aca-hero {
        padding: 100px 16px 60px;
    }

    .aca-hero-stats {
        gap: 24px;
    }

    .aca-stat-value {
        font-size: 1.75rem;
    }

    .aca-stat-divider {
        display: none;
    }

    .aca-features-grid {
        grid-template-columns: 1fr;
    }

    .aca-faq-question {
        font-size: 1rem;
        padding: 20px 0;
    }
}

@media (max-width: 576px) {
    .aca-hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .aca-btn-primary,
    .aca-btn-secondary {
        width: 100%;
        max-width: 320px;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .aca-page-nav,
    .aca-back-to-top,
    .aca-scroll-progress,
    .aca-scroll-indicator {
        display: none !important;
    }

    .aca-hero {
        min-height: auto;
        padding: 40px 0;
    }

    .aca-section {
        padding: 40px 0;
    }

    .aca-hero-overlay,
    .aca-hero-particles {
        display: none;
    }

    .aca-faq-answer {
        max-height: none !important;
    }
}