/** * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 * 
 * HGDP K72 Ancestry Report V2 - Premium Redesign
 * A cinematic, chapter-based design for 72 global populations analysis.
 * Color theme: Scientific Global Palette - Deep blues, warm golds, and earth tones
 */

/* ==========================================
   CSS CUSTOM PROPERTIES - GLOBAL PALETTE
   ========================================== */
:root {
    /* Primary Colors - Scientific & Global */
    --k72-indigo: #2C3E7B;
    --k72-indigo-light: #4A5A99;
    --k72-indigo-dark: #1E2A5A;
    --k72-gold: #D4A44F;
    --k72-gold-light: #E8C480;
    --k72-gold-dark: #B8883A;
    --k72-teal: #26A69A;
    --k72-teal-light: #4DB6AC;
    --k72-teal-dark: #00897B;
    
    /* Neutral Colors */
    --k72-cream: #F8F6F2;
    --k72-cream-dark: #EDE9E2;
    --k72-warm-white: #FDFCFA;
    --k72-charcoal: #2D3436;
    --k72-charcoal-soft: #434A4C;
    --k72-text: #3A3A3A;
    --k72-text-muted: #6B6B6B;
    --k72-white: #FFFFFF;
    --k72-border: rgba(45, 52, 54, 0.12);
    
    /* Continental Colors - K72 Specific */
    --k72-europe: #4169E1;
    --k72-asia-east: #DC143C;
    --k72-asia-south: #FF6B35;
    --k72-africa: #2E8B57;
    --k72-americas: #9932CC;
    --k72-middle-east: #DAA520;
    --k72-oceania: #20B2AA;
    --k72-caucasus: #8B4513;
    
    /* Typography */
    --k72-font-serif: 'Cormorant Garamond', 'Georgia', 'Times New Roman', serif;
    --k72-font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Shadows */
    --k72-shadow-sm: 0 2px 8px rgba(44, 62, 123, 0.08);
    --k72-shadow-md: 0 8px 24px rgba(44, 62, 123, 0.12);
    --k72-shadow-lg: 0 16px 48px rgba(44, 62, 123, 0.16);
    --k72-shadow-xl: 0 24px 64px rgba(44, 62, 123, 0.20);
    --k72-shadow-gold: 0 8px 32px rgba(212, 164, 79, 0.25);
    --k72-shadow-indigo: 0 12px 40px rgba(44, 62, 123, 0.20);
    
    /* Borders */
    --k72-radius-sm: 8px;
    --k72-radius-md: 16px;
    --k72-radius-lg: 24px;
    --k72-radius-xl: 32px;
    
    /* Transitions */
    --k72-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --k72-transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --k72-transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================
   SKIP LINK - ACCESSIBILITY
   ========================================== */
.k72-skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--k72-indigo);
    color: var(--k72-white);
    padding: 12px 24px;
    border-radius: var(--k72-radius-sm);
    z-index: 10000;
    font-weight: 600;
    text-decoration: none;
    transition: var(--k72-transition);
}

.k72-skip-link:focus {
    top: 20px;
    color: var(--k72-white);
    text-decoration: none;
}

/* ==========================================
   SCROLL PROGRESS INDICATOR
   ========================================== */
.k72-scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, var(--k72-indigo), var(--k72-gold), var(--k72-teal));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ==========================================
   PAGE NAVIGATION DOTS
   ========================================== */
.k72-page-nav {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.k72-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(44, 62, 123, 0.25);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--k72-transition);
    position: relative;
}

.k72-nav-dot:hover,
.k72-nav-dot.active {
    background: var(--k72-gold);
    border-color: var(--k72-gold);
    transform: scale(1.3);
}

.k72-nav-dot::before {
    content: attr(data-tooltip);
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--k72-charcoal);
    color: var(--k72-white);
    padding: 6px 12px;
    border-radius: var(--k72-radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--k72-transition);
}

.k72-nav-dot:hover::before {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 991px) {
    .k72-page-nav {
        display: none;
    }
}

/* ==========================================
   BACK TO TOP BUTTON
   ========================================== */
.k72-back-to-top {
    position: fixed;
    bottom: 90px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--k72-indigo);
    color: var(--k72-white);
    border: none;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--k72-transition);
    box-shadow: var(--k72-shadow-md);
}

.k72-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.k72-back-to-top:hover {
    background: var(--k72-gold);
    transform: translateY(-4px);
    box-shadow: var(--k72-shadow-lg);
}

@media (max-width: 767px) {
    .k72-back-to-top {
        bottom: 100px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
}

/* ==========================================
   MOBILE BOTTOM NAVIGATION
   ========================================== */
.k72-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--k72-border);
    padding: 8px 0;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
    z-index: 1000;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.k72-bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--k72-text-muted);
    font-size: 0.7rem;
    padding: 6px 12px;
    border-radius: var(--k72-radius-sm);
    transition: var(--k72-transition);
}

.k72-bottom-nav-item i {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.k72-bottom-nav-item span {
    font-weight: 500;
}

.k72-bottom-nav-item.active,
.k72-bottom-nav-item:hover {
    color: var(--k72-indigo);
    background: rgba(44, 62, 123, 0.08);
}

.k72-bottom-nav-item.active i {
    color: var(--k72-gold);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.k72-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 100px 24px 80px;
}

.k72-hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/img/reports/ancestry/hgdpk72/hgdpk72-hero.webp');
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.k72-hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        var(--k72-indigo-dark) 0%, 
        var(--k72-indigo) 30%,
        #1a2a50 60%,
        #0f1a30 100%);
    opacity: 0.85;
}

.k72-hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(212, 164, 79, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(38, 166, 154, 0.1) 0%, transparent 40%);
    z-index: 1;
}

.k72-hero-particles {
    position: absolute;
    inset: 0;
    z-index: 2;
    overflow: hidden;
}

.k72-hero-particles::before,
.k72-hero-particles::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(212, 164, 79, 0.6);
    border-radius: 50%;
    animation: k72-float 8s infinite ease-in-out;
}

.k72-hero-particles::before {
    top: 20%;
    left: 15%;
    animation-delay: 0s;
}

.k72-hero-particles::after {
    top: 60%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes k72-float {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.6; }
    50% { transform: translateY(-30px) scale(1.2); opacity: 1; }
}

.k72-hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.k72-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    padding: 10px 24px;
    border-radius: 50px;
    color: var(--k72-gold-light);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 24px;
    border: 1px solid rgba(212, 164, 79, 0.3);
}

.k72-hero-badge i {
    font-size: 1rem;
}

.k72-hero-title {
    font-family: var(--k72-font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 600;
    line-height: 1.15;
    color: var(--k72-white);
    margin-bottom: 24px;
}

.k72-title-line {
    display: block;
    color: rgba(255, 255, 255, 0.9);
}

.k72-title-accent {
    display: block;
    background: linear-gradient(135deg, var(--k72-gold), var(--k72-gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.k72-hero-subtitle {
    font-family: var(--k72-font-sans);
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.75);
    max-width: 700px;
    margin: 0 auto 32px;
}

.k72-hero-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.k72-stat-item {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    padding: 20px 28px;
    border-radius: var(--k72-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.12);
    min-width: 140px;
    transition: var(--k72-transition);
}

.k72-stat-item:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--k72-gold);
}

.k72-stat-value {
    display: block;
    font-family: var(--k72-font-serif);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--k72-gold);
    margin-bottom: 4px;
}

.k72-stat-label {
    display: block;
    font-family: var(--k72-font-sans);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.k72-trust-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.k72-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

.k72-trust-item i {
    color: var(--k72-teal);
}

/* Hero Animations */
.k72-animate-fade-in {
    animation: k72FadeIn 0.8s ease-out forwards;
    opacity: 0;
}

.k72-animate-fade-in-up {
    animation: k72FadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

.k72-delay-1 { animation-delay: 0.2s; }
.k72-delay-2 { animation-delay: 0.4s; }
.k72-delay-3 { animation-delay: 0.6s; }

@keyframes k72FadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes k72FadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================
   MAIN CONTENT & SECTIONS
   ========================================== */
.k72-main {
    background: var(--k72-cream);
}

.k72-main.dna-content-hidden {
    opacity: 0;
    visibility: hidden;
}

.k72-section {
    padding: 80px 0;
    position: relative;
}

.k72-section-cream {
    background: var(--k72-cream);
}

.k72-section-light {
    background: var(--k72-warm-white);
}

.k72-section-warm {
    background: linear-gradient(180deg, var(--k72-cream-dark) 0%, var(--k72-cream) 100%);
}

/* ==========================================
   CHAPTER HEADERS
   ========================================== */
.k72-chapter-header {
    text-align: center;
    margin-bottom: 48px;
}

.k72-chapter-number {
    display: inline-block;
    font-family: var(--k72-font-serif);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--k72-gold);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 12px;
}

.k72-section-title {
    font-family: var(--k72-font-serif);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--k72-charcoal);
    margin-bottom: 16px;
    line-height: 1.3;
}

.k72-section-subtitle {
    font-family: var(--k72-font-sans);
    font-size: 1.1rem;
    color: var(--k72-text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ==========================================
   ALERTS
   ========================================== */
.k72-alert {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    border-radius: var(--k72-radius-md);
    margin-bottom: 24px;
}

.k72-alert-info {
    background: linear-gradient(135deg, rgba(44, 62, 123, 0.08) 0%, rgba(38, 166, 154, 0.06) 100%);
    border: 1px solid rgba(44, 62, 123, 0.2);
}

.k72-alert-success {
    background: linear-gradient(135deg, rgba(46, 139, 87, 0.08) 0%, rgba(38, 166, 154, 0.06) 100%);
    border: 1px solid rgba(46, 139, 87, 0.2);
}

.k72-alert-warning {
    background: linear-gradient(135deg, rgba(212, 164, 79, 0.1) 0%, rgba(255, 193, 7, 0.06) 100%);
    border: 1px solid rgba(212, 164, 79, 0.3);
}

.k72-alert-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.k72-alert-info .k72-alert-icon { color: var(--k72-indigo); }
.k72-alert-success .k72-alert-icon { color: var(--k72-teal); }
.k72-alert-warning .k72-alert-icon { color: var(--k72-gold); }

.k72-alert-content h5 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--k72-charcoal);
    margin-bottom: 8px;
}

.k72-alert-content p {
    color: var(--k72-text-muted);
    margin-bottom: 12px;
    line-height: 1.6;
}

.k72-alert-content p:last-child {
    margin-bottom: 0;
}

/* ==========================================
   K72 POPULATIONS OVERVIEW
   ========================================== */
.k72-populations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.k72-population-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-md);
    padding: 24px;
    box-shadow: var(--k72-shadow-sm);
    border: 1px solid var(--k72-border);
    transition: var(--k72-transition);
}

.k72-population-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--k72-shadow-md);
}

.k72-population-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.k72-region-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--k72-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.k72-region-icon i {
    font-size: 1.4rem;
    color: var(--k72-white);
}

.k72-population-title {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--k72-charcoal);
    margin: 0;
}

.k72-population-count {
    font-size: 0.85rem;
    color: var(--k72-text-muted);
    margin-top: 2px;
}

.k72-population-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.k72-population-tag {
    display: inline-block;
    padding: 6px 12px;
    background: var(--k72-cream);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--k72-text);
    font-weight: 500;
    transition: var(--k72-transition);
}

.k72-population-tag:hover {
    background: var(--k72-cream-dark);
}

.k72-population-tag.more {
    background: linear-gradient(135deg, var(--k72-indigo-light), var(--k72-indigo));
    color: var(--k72-white);
}

/* ==========================================
   COMPOSITION CARD
   ========================================== */
.k72-composition-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-lg);
    overflow: hidden;
    box-shadow: var(--k72-shadow-lg);
}

.k72-composition-header {
    background: linear-gradient(135deg, var(--k72-indigo) 0%, var(--k72-indigo-dark) 100%);
    padding: 28px 32px;
    color: var(--k72-white);
}

.k72-composition-header h4 {
    font-family: var(--k72-font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--k72-white);
}

.k72-composition-header p {
    opacity: 0.8;
    margin: 0;
}

.k72-composition-body {
    padding: 0;
}

/* Region Group Headers */
.k72-region-header {
    background: linear-gradient(135deg, var(--k72-cream) 0%, var(--k72-white) 100%);
    padding: 16px 24px;
    border-left: 4px solid;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.k72-region-name {
    font-family: var(--k72-font-sans);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.k72-region-total {
    font-family: var(--k72-font-serif);
    font-size: 1.2rem;
    font-weight: 700;
}

/* Composition Items */
.k72-composition-item {
    display: flex;
    align-items: center;
    padding: 14px 24px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--k72-transition);
    background: var(--k72-white);
    cursor: pointer;
}

.k72-composition-item.sub-item {
    padding-left: 36px;
    background: rgba(248, 246, 242, 0.5);
}

.k72-composition-item:hover {
    background: var(--k72-cream);
}

.k72-composition-item:last-child {
    border-bottom: none;
}

.k72-composition-label {
    display: flex;
    align-items: center;
    min-width: 200px;
    flex: 0 0 200px;
}

.k72-composition-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    margin-right: 14px;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.k72-composition-label span {
    font-family: var(--k72-font-sans);
    font-weight: 500;
    color: var(--k72-charcoal);
    font-size: 0.95rem;
}

.k72-percentage-bar {
    flex: 1;
    height: 10px;
    background: var(--k72-cream-dark);
    border-radius: 5px;
    overflow: hidden;
    margin: 0 20px;
}

.k72-percentage-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.6s ease-out;
}

.k72-percentage-value {
    font-family: var(--k72-font-serif);
    font-weight: 700;
    font-size: 1rem;
    color: var(--k72-indigo);
    min-width: 65px;
    text-align: right;
}

/* ==========================================
   SUMMARY CARDS
   ========================================== */
.k72-summary-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-lg);
    overflow: hidden;
    box-shadow: var(--k72-shadow-md);
    margin-bottom: 32px;
}

.k72-summary-header {
    background: linear-gradient(135deg, var(--k72-gold) 0%, var(--k72-gold-dark) 100%);
    padding: 20px 24px;
}

.k72-summary-header h5 {
    color: var(--k72-white);
    font-family: var(--k72-font-sans);
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.k72-summary-body {
    padding: 28px;
}

.k72-top-regions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.k72-top-region-item {
    text-align: center;
    padding: 20px 16px;
    background: var(--k72-cream);
    border-radius: var(--k72-radius-md);
    transition: var(--k72-transition);
}

.k72-top-region-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--k72-shadow-sm);
}

.k72-top-region-percentage {
    font-family: var(--k72-font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--k72-indigo);
    margin-bottom: 4px;
}

.k72-top-region-name {
    font-family: var(--k72-font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--k72-charcoal);
}

.k72-top-region-continent {
    font-size: 0.75rem;
    color: var(--k72-text-muted);
    margin-top: 2px;
}

.k72-quick-insights {
    background: linear-gradient(135deg, rgba(44, 62, 123, 0.04) 0%, rgba(38, 166, 154, 0.03) 100%);
    padding: 20px;
    border-radius: var(--k72-radius-md);
    border-left: 4px solid var(--k72-gold);
}

.k72-quick-insights h5 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1rem;
    color: var(--k72-charcoal);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.k72-quick-insights h5 i {
    color: var(--k72-gold);
}

.k72-quick-insights ul {
    margin: 0;
    padding-left: 20px;
}

.k72-quick-insights li {
    color: var(--k72-text-muted);
    margin-bottom: 6px;
    line-height: 1.5;
}

.k72-quick-insights li:last-child {
    margin-bottom: 0;
}

/* ==========================================
   INFO SIDEBAR
   ========================================== */
.k72-info-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-md);
    padding: 24px;
    box-shadow: var(--k72-shadow-sm);
    margin-bottom: 20px;
}

.k72-info-card h5 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--k72-charcoal);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.k72-info-card h5 i {
    color: var(--k72-gold);
}

.k72-info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.k72-info-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--k72-text);
    font-size: 0.95rem;
}

.k72-info-list li i {
    color: var(--k72-teal);
}

/* Region Legend */
.k72-region-legend {
    margin-top: 8px;
}

.k72-legend-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--k72-text);
}

.k72-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 12px;
    flex-shrink: 0;
}

/* ==========================================
   MAP CONTAINER
   ========================================== */
.k72-map-container {
    background: var(--k72-white);
    border-radius: var(--k72-radius-lg);
    overflow: hidden;
    box-shadow: var(--k72-shadow-md);
    margin-top: 32px;
}

.k72-map-wrapper {
    position: relative;
    width: 100%;
}

.k72-map {
    width: 100%;
    height: 500px;
    border-radius: var(--k72-radius-lg) var(--k72-radius-lg) 0 0;
    background: var(--k72-cream);
}

.k72-map-disclaimer {
    padding: 16px 24px;
    background: linear-gradient(135deg, rgba(44, 62, 123, 0.04) 0%, rgba(212, 164, 79, 0.04) 100%);
    border-top: 1px solid var(--k72-border);
}

.k72-map-disclaimer small {
    color: var(--k72-text-muted);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.k72-map-disclaimer i {
    color: var(--k72-gold);
}

/* ==========================================
   UNDERSTANDING SECTION
   ========================================== */
.k72-understanding-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.k72-understanding-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-md);
    padding: 32px;
    text-align: center;
    box-shadow: var(--k72-shadow-sm);
    border: 1px solid var(--k72-border);
    transition: var(--k72-transition);
}

.k72-understanding-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--k72-shadow-lg);
}

.k72-understanding-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--k72-indigo-light), var(--k72-indigo));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.k72-understanding-icon i {
    font-size: 1.75rem;
    color: var(--k72-white);
}

.k72-understanding-card h4 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--k72-charcoal);
    margin-bottom: 12px;
}

.k72-understanding-card p {
    color: var(--k72-text-muted);
    line-height: 1.6;
    margin: 0;
}

/* ==========================================
   TECHNICAL / METHODOLOGY SECTION
   ========================================== */
.k72-methodology-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-lg);
    overflow: hidden;
    box-shadow: var(--k72-shadow-md);
}

.k72-methodology-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    cursor: pointer;
    transition: var(--k72-transition);
    background: linear-gradient(135deg, var(--k72-cream) 0%, var(--k72-white) 100%);
}

.k72-methodology-header:hover {
    background: var(--k72-cream);
}

.k72-methodology-header h5 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--k72-charcoal);
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0;
}

.k72-methodology-header h5 i:first-child {
    color: var(--k72-gold);
}

.k72-methodology-header > i {
    color: var(--k72-text-muted);
    transition: var(--k72-transition);
}

.k72-methodology-header[aria-expanded="true"] > i {
    transform: rotate(180deg);
}

.k72-methodology-body {
    padding: 28px;
    border-top: 1px solid var(--k72-border);
}

.k72-methodology-body h6 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1rem;
    color: var(--k72-charcoal);
    margin: 24px 0 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.k72-methodology-body h6:first-child {
    margin-top: 0;
}

.k72-methodology-body h6 i {
    color: var(--k72-indigo);
}

.k72-methodology-body p {
    color: var(--k72-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

.k72-methodology-body p:last-child {
    margin-bottom: 0;
}

/* ==========================================
   FAQ SECTION
   ========================================== */
.k72-faq-section {
    margin-top: 40px;
}

.k72-faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.k72-faq-item {
    background: var(--k72-white);
    border-radius: var(--k72-radius-md);
    overflow: hidden;
    box-shadow: var(--k72-shadow-sm);
    border: 1px solid var(--k72-border);
}

.k72-faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: var(--k72-transition);
}

.k72-faq-question:hover {
    background: var(--k72-cream);
}

.k72-faq-question span {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1rem;
    color: var(--k72-charcoal);
}

.k72-faq-question span i {
    color: var(--k72-gold);
}

.k72-faq-question > i {
    color: var(--k72-text-muted);
    transition: var(--k72-transition);
}

.k72-faq-question:not(.collapsed) > i {
    transform: rotate(180deg);
}

.k72-faq-answer {
    padding: 0 24px 24px;
}

.k72-faq-answer p {
    color: var(--k72-text-muted);
    line-height: 1.7;
    margin-bottom: 12px;
}

.k72-faq-answer p:last-child {
    margin-bottom: 0;
}

.k72-faq-answer ul {
    margin: 12px 0;
    padding-left: 24px;
}

.k72-faq-answer li {
    color: var(--k72-text-muted);
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ==========================================
   AI ASSISTANT SECTION
   ========================================== */
.k72-ai-section {
    background: linear-gradient(135deg, rgba(44, 62, 123, 0.06) 0%, rgba(212, 164, 79, 0.04) 100%);
    border: 2px solid var(--k72-indigo);
    border-radius: var(--k72-radius-lg);
    padding: 32px;
    margin-top: 40px;
}

.k72-ai-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.k72-ai-title h4 {
    font-family: var(--k72-font-sans);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--k72-charcoal);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.k72-ai-title h4 i {
    color: var(--k72-indigo);
}

.k72-ai-title small {
    color: var(--k72-text-muted);
    font-weight: 400;
}

.k72-ai-badge {
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.k72-ai-badge.enabled {
    background: linear-gradient(135deg, var(--k72-teal), var(--k72-teal-dark));
    color: var(--k72-white);
}

.k72-ai-badge.disabled {
    background: linear-gradient(135deg, var(--k72-gold), var(--k72-gold-dark));
    color: var(--k72-white);
}

.k72-ai-info {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--k72-white);
    padding: 16px 20px;
    border-radius: var(--k72-radius-md);
    margin-bottom: 24px;
}

.k72-ai-info i {
    color: var(--k72-indigo);
    font-size: 1.1rem;
    margin-top: 2px;
}

.k72-ai-info p {
    color: var(--k72-text-muted);
    margin: 0;
    line-height: 1.6;
}

.k72-suggested-prompts {
    margin-bottom: 24px;
}

.k72-suggested-prompts p {
    font-size: 0.9rem;
    color: var(--k72-text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.k72-suggested-prompts p i {
    color: var(--k72-gold);
}

.k72-prompt-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--k72-white);
    border: 1px solid var(--k72-border);
    border-radius: 50px;
    color: var(--k72-charcoal);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--k72-transition);
    margin-right: 10px;
    margin-bottom: 10px;
}

.k72-prompt-btn:hover {
    background: var(--k72-indigo);
    color: var(--k72-white);
    border-color: var(--k72-indigo);
    transform: translateY(-2px);
}

.k72-prompt-btn i {
    font-size: 0.85rem;
}

.k72-ai-main-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--k72-white);
    border: 2px solid var(--k72-indigo);
    border-radius: var(--k72-radius-md);
    color: var(--k72-indigo);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--k72-transition);
}

.k72-ai-main-btn img {
    width: 24px;
    height: 24px;
}

.k72-ai-main-btn:hover {
    background: var(--k72-indigo);
    color: var(--k72-white);
    transform: translateY(-2px);
    box-shadow: var(--k72-shadow-indigo);
}

.k72-ai-results {
    background: var(--k72-white);
    border: 1px solid var(--k72-border);
    border-radius: var(--k72-radius-md);
    padding: 24px;
    margin-top: 20px;
    min-height: 50px;
}

.k72-ai-results:empty {
    display: none;
}

.k72-ai-result-content {
    line-height: 1.8;
    color: var(--k72-text);
}

.k72-ai-sample-output {
    background: var(--k72-white);
    border: 2px solid var(--k72-gold);
    border-radius: var(--k72-radius-md);
    padding: 24px;
}

.k72-ai-sample-output h6 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    color: var(--k72-indigo);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.k72-ai-sample-output h6 i {
    color: var(--k72-gold);
}

.k72-ai-sample-content {
    background: var(--k72-cream);
    padding: 20px;
    border-radius: var(--k72-radius-sm);
    margin-bottom: 20px;
}

.k72-ai-sample-content p {
    color: var(--k72-text-muted);
    line-height: 1.7;
    margin-bottom: 12px;
}

.k72-ai-sample-content p:last-child {
    margin-bottom: 0;
}

.k72-ai-unlock-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--k72-teal), var(--k72-teal-dark));
    color: var(--k72-white);
    border-radius: var(--k72-radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: var(--k72-transition);
}

.k72-ai-unlock-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--k72-shadow-md);
    color: var(--k72-white);
    text-decoration: none;
}

/* ==========================================
   SCROLL REVEAL ANIMATIONS
   ========================================== */
.k72-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.k72-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   PROCESSING & NO DATA STATES
   ========================================== */
.k72-state-container {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: linear-gradient(180deg, var(--k72-cream) 0%, var(--k72-warm-white) 100%);
}

.k72-state-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-xl);
    overflow: hidden;
    box-shadow: var(--k72-shadow-xl);
    max-width: 600px;
    width: 100%;
}

.k72-state-header {
    background: linear-gradient(135deg, var(--k72-indigo) 0%, var(--k72-indigo-dark) 100%);
    padding: 32px;
    text-align: center;
    color: var(--k72-white);
}

.k72-state-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.k72-state-icon i {
    font-size: 2.5rem;
    color: var(--k72-gold);
}

.k72-state-header h2 {
    font-family: var(--k72-font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
}

.k72-state-body {
    padding: 40px 32px;
    text-align: center;
}

.k72-state-body p {
    color: var(--k72-text-muted);
    line-height: 1.7;
    margin-bottom: 24px;
}

/* Processing Animation */
.k72-processing-animation {
    margin: 32px 0;
}

.k72-spinner-container {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto;
}

.k72-spinner-ring {
    position: absolute;
    inset: 0;
    border: 4px solid transparent;
    border-radius: 50%;
}

.k72-spinner-ring:nth-child(1) {
    border-top-color: var(--k72-indigo);
    animation: k72Spin 1.5s linear infinite;
}

.k72-spinner-ring:nth-child(2) {
    inset: 10px;
    border-right-color: var(--k72-gold);
    animation: k72SpinReverse 2s linear infinite;
}

.k72-spinner-ring:nth-child(3) {
    inset: 20px;
    border-bottom-color: var(--k72-teal);
    animation: k72Spin 2.5s linear infinite;
}

.k72-spinner-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--k72-gold), var(--k72-gold-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.k72-spinner-center i {
    color: var(--k72-white);
    font-size: 1.25rem;
}

@keyframes k72Spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes k72SpinReverse {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

/* Processing Steps */
.k72-processing-steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px;
    text-align: left;
}

.k72-step {
    background: var(--k72-cream);
    padding: 20px;
    border-radius: var(--k72-radius-md);
}

.k72-step-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.k72-step-number {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--k72-indigo), var(--k72-indigo-dark));
    color: var(--k72-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.k72-step-title {
    font-weight: 600;
    color: var(--k72-charcoal);
}

.k72-step-desc {
    color: var(--k72-text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

/* Time Estimate */
.k72-time-estimate {
    background: linear-gradient(135deg, rgba(38, 166, 154, 0.1) 0%, rgba(38, 166, 154, 0.05) 100%);
    border: 1px solid var(--k72-teal);
    border-radius: var(--k72-radius-md);
    padding: 20px;
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.k72-time-estimate i {
    font-size: 1.5rem;
    color: var(--k72-teal);
}

.k72-time-estimate-text strong {
    display: block;
    color: var(--k72-charcoal);
    margin-bottom: 4px;
}

.k72-time-estimate-text span {
    color: var(--k72-text-muted);
    font-size: 0.9rem;
}

/* Action Buttons */
.k72-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.k72-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--k72-radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--k72-transition);
    cursor: pointer;
    border: none;
}

.k72-btn-primary {
    background: linear-gradient(135deg, var(--k72-indigo), var(--k72-indigo-dark));
    color: var(--k72-white);
}

.k72-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--k72-shadow-indigo);
    color: var(--k72-white);
    text-decoration: none;
}

.k72-btn-outline {
    background: transparent;
    border: 2px solid var(--k72-border);
    color: var(--k72-text);
}

.k72-btn-outline:hover {
    border-color: var(--k72-indigo);
    color: var(--k72-indigo);
    text-decoration: none;
}

/* About Section for NoData/Processing */
.k72-about-section {
    margin-top: 40px;
    max-width: 600px;
    width: 100%;
}

.k72-about-card {
    background: var(--k72-white);
    border-radius: var(--k72-radius-lg);
    overflow: hidden;
    box-shadow: var(--k72-shadow-md);
}

.k72-about-header {
    background: linear-gradient(135deg, var(--k72-cream) 0%, var(--k72-white) 100%);
    padding: 20px 24px;
    border-bottom: 1px solid var(--k72-border);
}

.k72-about-header h5 {
    font-family: var(--k72-font-sans);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--k72-charcoal);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.k72-about-header h5 i {
    color: var(--k72-gold);
}

.k72-about-body {
    padding: 24px;
}

.k72-about-body p {
    color: var(--k72-text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

.k72-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.k72-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    color: var(--k72-text);
}

.k72-feature-list li i {
    color: var(--k72-teal);
    margin-top: 4px;
}

.k72-feature-list li strong {
    color: var(--k72-charcoal);
}

/* ==========================================
   RESPONSIVE ADJUSTMENTS
   ========================================== */
@media (max-width: 991px) {
    .k72-hero {
        min-height: 100vh;
        padding: 80px 20px 60px;
    }
    
    .k72-hero-stats {
        gap: 16px;
    }
    
    .k72-stat-item {
        padding: 16px 20px;
        min-width: 120px;
    }
    
    .k72-stat-value {
        font-size: 1.75rem;
    }
    
    .k72-section {
        padding: 60px 0;
    }
    
    .k72-composition-label {
        min-width: 160px;
        flex: 0 0 160px;
    }
}

@media (max-width: 767px) {
    .k72-hero {
        min-height: auto;
        padding: 70px 16px 40px;
    }
    
    .k72-hero-badge {
        font-size: 0.75rem;
        padding: 8px 16px;
    }
    
    .k72-hero-title {
        font-size: 2rem;
    }
    
    .k72-hero-subtitle {
        font-size: 1rem;
    }
    
    .k72-hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .k72-stat-item {
        width: 100%;
        max-width: 200px;
        padding: 16px;
    }
    
    .k72-trust-badges {
        flex-direction: column;
        gap: 12px;
    }
    
    .k72-section {
        padding: 40px 0;
    }
    
    .k72-chapter-header {
        margin-bottom: 32px;
    }
    
    .k72-composition-item {
        flex-wrap: wrap;
        padding: 16px;
    }
    
    .k72-composition-label {
        min-width: 100%;
        flex: 1 0 100%;
        margin-bottom: 10px;
    }
    
    .k72-percentage-bar {
        margin: 0;
        flex: 1 0 calc(100% - 80px);
    }
    
    .k72-percentage-value {
        min-width: 70px;
    }
    
    .k72-map {
        height: 350px;
    }
    
    .k72-processing-steps {
        grid-template-columns: 1fr;
    }
    
    .k72-ai-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    /* Add padding for mobile bottom nav */
    .k72-main {
        padding-bottom: 80px;
    }
}

/* ==========================================
   PRINT STYLES
   ========================================== */
@media print {
    .k72-scroll-progress,
    .k72-page-nav,
    .k72-back-to-top,
    .k72-bottom-nav,
    .k72-ai-section,
    .k72-btn,
    .k72-actions {
        display: none !important;
    }
    
    .k72-hero {
        min-height: auto;
        padding: 40px 20px;
    }
    
    .k72-hero-bg,
    .k72-hero-overlay,
    .k72-hero-particles {
        display: none;
    }
    
    .k72-hero-content {
        color: black;
    }
    
    .k72-hero-title,
    .k72-title-line,
    .k72-title-accent {
        color: black !important;
        -webkit-text-fill-color: black !important;
    }
    
    .k72-hero-subtitle,
    .k72-hero-badge {
        color: #333 !important;
    }
    
    .k72-stat-item {
        background: #f5f5f5 !important;
        border: 1px solid #ddd !important;
    }
    
    .k72-stat-value {
        color: #333 !important;
    }
    
    .k72-section {
        padding: 30px 0;
        break-inside: avoid;
    }
    
    .k72-composition-card,
    .k72-summary-card,
    .k72-info-card,
    .k72-methodology-card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
    
    .k72-map-container {
        break-inside: avoid;
    }
    
    .k72-reveal {
        opacity: 1 !important;
        transform: none !important;
    }
}