/**
 * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 *
 * SEO upload landing pages styling. Matches Glossary layout: light theme, teal accents,
 * white cards. Shared across upload-23andme-raw, upload-ancestrydna-raw, upload-myheritage-raw,
 * upload-ftdna-raw, upload-nebula-raw, and upload-dna-data pages.
 */

/* ========================================
   FONT IMPORTS - Match Glossary
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ========================================
   CSS VARIABLES - Match Glossary Design System
   ======================================== */
:root {
    --udna-deep: #0f1419;
    --udna-deep-soft: #1a2332;
    --udna-navy: #162029;
    --udna-slate: #1e2d38;
    --udna-primary: #2c7a7b;
    --udna-primary-dark: #1a5456;
    --udna-primary-light: #81e6d9;
    --udna-teal: #319795;
    --udna-teal-light: #4fd1c5;
    --udna-white: #ffffff;
    --udna-off-white: #faf9f7;
    --udna-cream: #f5f3ef;
    --udna-gray-100: #f1f0ed;
    --udna-gray-200: #e4e2dc;
    --udna-gray-300: #c5c2ba;
    --udna-text-dark: #1a1815;
    --udna-text-body: #4a473f;
    --udna-text-muted: #706c64;
    --udna-text-light: #f0f0f2;
    --udna-text-light-muted: rgba(240, 240, 242, 0.7);
    --udna-font-serif: 'Cormorant Garamond', Georgia, serif;
    --udna-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --udna-shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.04);
    --udna-shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --udna-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08);
    --udna-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --udna-radius-sm: 4px;
    --udna-radius-md: 8px;
    --udna-radius-lg: 12px;
    --udna-radius-xl: 16px;
}

/* ========================================
   BASE PAGE - Light theme like Glossary
   ======================================== */
.udna-page {
    font-family: var(--udna-font-sans);
    color: var(--udna-text-body);
    background: var(--udna-off-white);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    line-height: 1.7;
}

.udna-page *,
.udna-page *::before,
.udna-page *::after {
    box-sizing: border-box;
}

/* Skip Link - Accessibility */
.udna-skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    background: var(--udna-primary);
    color: var(--udna-white);
    padding: 12px 24px;
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--udna-radius-sm);
    z-index: 10000;
    transition: top 0.15s var(--udna-transition);
}

.udna-skip-link:focus {
    top: 16px;
    outline: 3px solid var(--udna-primary-light);
    outline-offset: 2px;
}

/* Scroll Progress Indicator */
.udna-scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--udna-primary), var(--udna-teal-light));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* Page Navigation Dots */
.udna-page-nav {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.udna-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--udna-gray-300);
    border: 2px solid var(--udna-white);
    cursor: pointer;
    transition: all 0.15s;
    position: relative;
}

.udna-nav-dot:hover,
.udna-nav-dot.active {
    background: var(--udna-primary);
    transform: scale(1.2);
}

.udna-nav-dot::after {
    content: attr(data-tooltip);
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--udna-text-dark);
    color: var(--udna-white);
    padding: 6px 12px;
    border-radius: var(--udna-radius-sm);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s;
}

.udna-nav-dot:hover::after {
    opacity: 1;
}

/* Back to Top Button */
.udna-back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--udna-primary);
    color: var(--udna-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--udna-shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--udna-transition);
    z-index: 1000;
}

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

.udna-back-to-top:hover {
    background: var(--udna-primary-dark);
    transform: translateY(-4px);
}

/* Container */
.udna-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

.udna-container--narrow {
    max-width: 900px;
}

/* ========================================
   HERO SECTION - Dark like Glossary
   ======================================== */
.udna-hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    overflow: hidden;
}

.udna-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--udna-deep) 0%, var(--udna-navy) 50%, var(--udna-slate) 100%);
}

.udna-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(44, 122, 123, 0.3) 0%, transparent 50%);
}

.udna-hero-texture,
.udna-hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: repeating-linear-gradient(45deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px);
    opacity: 0.5;
}

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

.udna-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 9999px;
    color: var(--udna-text-light);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.udna-hero-title {
    font-family: var(--udna-font-serif);
    font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--udna-text-light);
    margin: 0 0 1rem;
}

.udna-hero-lead {
    font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
    color: var(--udna-text-light-muted);
    margin: 0 0 1.5rem;
    line-height: 1.6;
}

.udna-hero-trust {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 1.5rem 0 2rem;
}

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

.udna-hero-trust-item i {
    color: var(--udna-teal-light);
}

.udna-hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--udna-primary);
    color: var(--udna-white);
    font-weight: 600;
    font-size: 1.125rem;
    border-radius: var(--udna-radius-md);
    text-decoration: none;
    border: 2px solid var(--udna-primary);
    transition: all var(--udna-transition);
}

.udna-hero-cta:hover {
    background: var(--udna-primary-dark);
    border-color: var(--udna-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--udna-shadow-md);
}

.udna-hero-providers {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--udna-text-light-muted);
}

.udna-hero-providers span {
    color: var(--udna-text-light);
}

/* ========================================
   CONTENT SECTIONS - Light background, white cards
   ======================================== */
.udna-section {
    padding: 4rem 0;
    background: var(--udna-off-white);
}

.udna-section--white {
    background: var(--udna-white);
    border-bottom: 1px solid var(--udna-gray-200);
}

.udna-section-title {
    font-family: var(--udna-font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--udna-text-dark);
    margin-bottom: 2rem;
    text-align: center;
}

/* ========================================
   STEPS - White cards with shadow
   ======================================== */
.udna-steps {
    display: grid;
    gap: 1rem;
}

.udna-step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--udna-white);
    border: 1px solid var(--udna-gray-200);
    border-radius: var(--udna-radius-lg);
    box-shadow: var(--udna-shadow-soft);
    transition: all var(--udna-transition);
}

.udna-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--udna-shadow-md);
    border-color: var(--udna-teal-light);
}

.udna-step-num {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--udna-primary), var(--udna-teal));
    color: var(--udna-white);
    font-weight: 700;
    border-radius: 50%;
}

.udna-step-content h4 {
    font-size: 1rem;
    color: var(--udna-text-dark);
    margin-bottom: 0.25rem;
}

.udna-step-content p {
    font-size: 0.9375rem;
    color: var(--udna-text-body);
    margin: 0;
}

.udna-step-content a {
    color: var(--udna-primary);
    text-decoration: none;
}

.udna-step-content a:hover {
    text-decoration: underline;
}

/* ========================================
   TOOLS GRID - White cards
   ======================================== */
.udna-tools {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.udna-tool-card {
    padding: 1.5rem;
    background: var(--udna-white);
    border: 1px solid var(--udna-gray-200);
    border-radius: var(--udna-radius-lg);
    box-shadow: var(--udna-shadow-soft);
    transition: all var(--udna-transition);
}

.udna-tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--udna-shadow-md);
    border-color: var(--udna-teal-light);
}

.udna-tool-card i {
    color: var(--udna-primary);
    margin-bottom: 0.5rem;
}

.udna-tool-card h4 {
    font-size: 1rem;
    color: var(--udna-text-dark);
    margin-bottom: 0.25rem;
}

.udna-tool-card p {
    font-size: 0.875rem;
    color: var(--udna-text-body);
    margin: 0;
}

/* ========================================
   PRIVACY SECTION - White cards
   ======================================== */
.udna-privacy {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
}

.udna-privacy-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--udna-white);
    border: 1px solid var(--udna-gray-200);
    border-radius: var(--udna-radius-lg);
    box-shadow: var(--udna-shadow-soft);
    transition: all var(--udna-transition);
}

.udna-privacy-item:hover {
    border-color: var(--udna-teal-light);
}

.udna-privacy-item i {
    color: var(--udna-primary);
    flex-shrink: 0;
}

.udna-privacy-item h4 {
    font-size: 0.9375rem;
    color: var(--udna-text-dark);
    margin-bottom: 0.25rem;
}

.udna-privacy-item p {
    font-size: 0.875rem;
    color: var(--udna-text-muted);
    margin: 0;
}

/* ========================================
   FAQ ACCORDION - White cards
   ======================================== */
.udna-faq {
    max-width: 720px;
    margin: 0 auto;
}

.udna-faq-item {
    border: 1px solid var(--udna-gray-200);
    border-radius: var(--udna-radius-lg);
    margin-bottom: 0.5rem;
    overflow: hidden;
    background: var(--udna-white);
    box-shadow: var(--udna-shadow-soft);
}

.udna-faq-item:hover {
    border-color: var(--udna-gray-300);
}

.udna-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: transparent;
    border: none;
    color: var(--udna-text-dark);
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    transition: var(--udna-transition);
}

.udna-faq-question:hover {
    background: var(--udna-gray-100);
}

.udna-faq-question i {
    color: var(--udna-primary);
    transition: transform var(--udna-transition);
}

.udna-faq-item.open .udna-faq-question i {
    transform: rotate(45deg);
}

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

.udna-faq-item.open .udna-faq-answer {
    max-height: 500px;
}

.udna-faq-answer-inner {
    padding: 0 1.25rem 1rem;
    color: var(--udna-text-body);
    font-size: 0.9375rem;
}

/* ========================================
   CTA SECTION - Cream gradient like Glossary
   ======================================== */
.udna-cta {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--udna-cream) 0%, var(--udna-white) 100%);
}

.udna-cta-content {
    text-align: center;
}

.udna-cta-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--udna-primary), var(--udna-teal));
    border-radius: 50%;
    color: var(--udna-white);
    font-size: 2rem;
}

.udna-cta-title {
    font-family: var(--udna-font-serif);
    font-size: clamp(1.75rem, 3vw + 0.5rem, 2.75rem);
    font-weight: 600;
    color: var(--udna-text-dark);
    margin: 0 0 1rem;
}

.udna-cta-lead {
    font-size: 1rem;
    color: var(--udna-text-body);
    margin: 0 0 1.5rem;
}

.udna-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--udna-primary);
    color: var(--udna-white);
    font-weight: 600;
    font-size: 1.125rem;
    border-radius: var(--udna-radius-md);
    text-decoration: none;
    border: 2px solid var(--udna-primary);
    transition: all var(--udna-transition);
}

.udna-cta-btn:hover {
    background: var(--udna-primary-dark);
    border-color: var(--udna-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--udna-shadow-md);
}

/* ========================================
   PROVIDER CARDS (generic page) - White cards
   ======================================== */
.udna-providers {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.udna-provider-card {
    display: block;
    padding: 1.5rem;
    background: var(--udna-white);
    border: 1px solid var(--udna-gray-200);
    border-radius: var(--udna-radius-lg);
    text-decoration: none;
    color: var(--udna-text-body);
    box-shadow: var(--udna-shadow-soft);
    transition: all var(--udna-transition);
}

.udna-provider-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--udna-shadow-md);
    border-color: var(--udna-primary);
    color: var(--udna-text-dark);
}

.udna-provider-card h4 {
    font-size: 1rem;
    color: var(--udna-text-dark);
    margin-bottom: 0.25rem;
}

.udna-provider-card p {
    font-size: 0.875rem;
    color: var(--udna-text-muted);
    margin: 0;
}

/* ========================================
   RELATED PAGES - Pill links like Glossary
   ======================================== */
.udna-related {
    padding: 3rem 0;
}

.udna-related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.udna-related-links a {
    padding: 6px 16px;
    background: var(--udna-gray-100);
    color: var(--udna-primary);
    text-decoration: none;
    border-radius: var(--udna-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--udna-transition);
}

.udna-related-links a:hover {
    background: var(--udna-primary);
    color: var(--udna-white);
    transform: translateY(-1px);
}

/* ========================================
   BREADCRUMB
   ======================================== */
.udna-breadcrumb {
    padding: 1.5rem 0;
}

.udna-breadcrumb .breadcrumb {
    background: transparent;
    margin: 0;
}

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

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

.udna-breadcrumb .breadcrumb-item.active {
    color: var(--udna-text-muted);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .udna-container {
        padding: 0 1.5rem;
    }

    .udna-hero {
        min-height: 60vh;
        padding: 5rem 0 3rem;
    }

    .udna-page-nav {
        display: none;
    }

    .udna-back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }

    .udna-hero-trust {
        flex-direction: column;
        gap: 0.75rem;
    }

    .udna-section {
        padding: 3rem 0;
    }

    .udna-step {
        flex-direction: column;
        gap: 1rem;
    }

    .udna-tools {
        grid-template-columns: 1fr;
    }

    .udna-privacy {
        grid-template-columns: 1fr;
    }

    .udna-providers {
        grid-template-columns: 1fr;
    }

    .udna-cta-buttons {
        flex-direction: column;
    }
}