/* ============================================
   CSS Variables
   ============================================ */
:root {
    --color-primary: rgb(85, 128, 156);
    --color-primary-dark: rgb(65, 108, 136);
    --color-primary-light: rgba(85, 128, 156, 0.1);
    --color-text: #2c2c2c;
    --color-text-light: #666666;
    --color-white: #ffffff;
    --color-overlay: rgba(0, 0, 0, 0.3);
    
    --font-serif: 'Cormorant Garamond', 'Georgia', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
}

/* ============================================
   Header
   ============================================ */
.site-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    max-width: 180px;
    height: auto;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    padding: 0.25rem;
    border: 1px solid rgba(85, 128, 156, 0.2);
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 50px;
    transition: all var(--transition-base);
    text-transform: uppercase;
}

.lang-btn:hover {
    background: rgba(85, 128, 156, 0.1);
}

.lang-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 2px 8px rgba(85, 128, 156, 0.3);
}

/* Dot Navigation */
.dot-nav {
    position: fixed;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.dot-nav__item {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-base);
    position: relative;
}

.dot-nav__item:hover,
.dot-nav__item:focus {
    outline: none;
}

.dot-nav__dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    background: transparent;
    transition: var(--transition-base);
    display: block;
}

.dot-nav__item[aria-current="true"] .dot-nav__dot {
    background: var(--color-primary);
    transform: scale(1.2);
}

.dot-nav__label {
    font-size: 0.875rem;
    color: var(--color-text);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-base);
    white-space: nowrap;
    position: absolute;
    right: 100%;
    margin-right: var(--spacing-sm);
    background: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.dot-nav__item:hover .dot-nav__label,
.dot-nav__item:focus .dot-nav__label {
    opacity: 1;
}

/* ============================================
   Main Scroller
   ============================================ */
.scroller {
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-snap-type: y mandatory;
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    .scroller {
        scroll-snap-type: none;
        scroll-behavior: auto;
    }
}

/* ============================================
   Section Layout
   ============================================ */
.section {
    height: 100vh;
    scroll-snap-align: start;
    display: grid;
    grid-template-columns: 5fr 7fr;
    position: relative;
    overflow: hidden;
}

.section__content {
    display: flex;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--color-white);
    position: relative;
    z-index: 2;
    overflow-y: auto;
    max-height: 100vh;
}

.section__text {
    max-width: 600px;
    margin: 0 auto;
}

.section__image {
    position: relative;
    overflow: hidden;
}

.section__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Add subtle gradient overlay on images for better text contrast */
.section__image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(255,255,255,0.1) 0%, transparent 30%);
    pointer-events: none;
}

/* ============================================
   Typography
   ============================================ */
.overline {
    display: block;
    font-size: clamp(0.75rem, 1.2vw, 0.875rem);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 4rem);
    font-weight: 500;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h2.title {
    font-size: clamp(1.75rem, 3.5vw, 3rem);
}

h3 {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.lead {
    font-size: clamp(1rem, 1.8vw, 1.125rem);
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.note {
    font-size: clamp(0.8rem, 1.5vw, 0.9375rem);
    line-height: 1.7;
    color: var(--color-text-light);
    font-style: italic;
    margin-top: var(--spacing-md);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-primary-light);
}

/* ============================================
   Lists
   ============================================ */
.feature-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.feature-list li {
    padding: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-md);
    position: relative;
    color: var(--color-text-light);
    line-height: 1.7;
    font-size: clamp(0.8rem, 1.5vw, 0.9375rem);
}

.feature-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

.feature-list--checked li::before {
    content: '✓';
}

.feature-list strong {
    color: var(--color-text);
    font-weight: 600;
}

/* ============================================
   Block Details
   ============================================ */
.block-details {
    margin: var(--spacing-md) 0;
}

.block-details h3,
.section__text h3 {
    font-family: var(--font-sans);
    font-size: clamp(0.75rem, 1.5vw, 0.95rem);
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.block-details p,
.section__text > p {
    font-size: clamp(0.8rem, 1.5vw, 0.9375rem);
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Stats
   ============================================ */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.stat {
    text-align: left;
    padding: var(--spacing-md);
    background: var(--color-primary-light);
    border-radius: 8px;
}

.stat__number {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat__label {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
    margin: var(--spacing-md) 0;
}

.timeline-block {
    margin-bottom: var(--spacing-lg);
}

.timeline-block:last-child {
    margin-bottom: 0;
}

/* ============================================
   Benefits
   ============================================ */
.benefits {
    display: grid;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.benefit {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary-light);
    border-radius: 4px;
    color: var(--color-text-light);
}

.benefit strong {
    color: var(--color-primary);
    display: block;
    margin-bottom: 0.25rem;
}

/* ============================================
   CTA Button
   ============================================ */
.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    margin-top: var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: var(--transition-base);
    border: 2px solid var(--color-primary);
}

.cta-button:hover,
.cta-button:focus {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(85, 128, 156, 0.3);
}

.cta-button--secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.cta-button--secondary:hover,
.cta-button--secondary:focus {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ============================================
   Example CTA Section
   ============================================ */
.example-cta {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-primary-light);
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
}

.example-cta h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.example-cta .note {
    border-left: none;
    padding-left: 0;
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: var(--transition-base);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

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

.back-to-top:hover,
.back-to-top:focus {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(85, 128, 156, 0.3);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Animations (disabled with prefers-reduced-motion)
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .section__content {
        opacity: 0;
        transform: translateX(-20px);
        animation: slideInLeft var(--transition-slow) forwards;
        animation-play-state: paused;
    }
    
    .section.is-visible .section__content {
        animation-play-state: running;
    }
    
    @keyframes slideInLeft {
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1400px) {
    .section__content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 1024px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .section {
        grid-template-columns: 1fr 1fr;
    }

    .section__content {
        padding: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }

    /* DISABLE SCROLL SNAP ON MOBILE - allows normal scrolling for long content */
    .scroller {
        scroll-snap-type: none;
        overflow-y: auto;
    }
    
    .section {
        scroll-snap-align: none;
        height: auto;
        min-height: 100vh;
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        display: flex;
        flex-direction: column;
    }
    
    .site-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .logo {
        max-width: 140px;
    }
    
    /* HIDE DOT NAVIGATION ON MOBILE */
    .dot-nav {
        display: none;
    }

    /* ADJUST BACK TO TOP BUTTON ON MOBILE */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
    }

    .back-to-top svg {
        width: 20px;
        height: 20px;
    }
    
    .section__content {
        padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
        min-height: auto;
        text-align: left;
        order: 2;
    }
    
    .section__image {
        min-height: 40vh;
        max-height: 40vh;
        order: 1;
        overflow: hidden;
        flex-shrink: 0;
    }

    .section__img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .section__text {
        max-width: 100%;
    }

    .section__title {
        font-size: 2rem;
        margin-bottom: var(--spacing-sm);
    }

    .section__overline {
        font-size: 0.75rem;
    }

    .section__lead {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }

    .feature-list {
        text-align: left;
        margin: var(--spacing-md) auto;
        max-width: 500px;
    }

    .block-details {
        text-align: left;
        margin: var(--spacing-md) 0;
    }

    .block-details h3 {
        font-size: 0.9rem;
    }

    .block-details p {
        font-size: 0.875rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        margin: var(--spacing-md) 0;
    }
    
    .stat {
        padding: var(--spacing-sm);
    }
    
    .stat__number {
        font-size: 2rem;
    }
}

/* Small mobile adjustments */
@media (max-width: 480px) {
    .section__content {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-lg);
    }

    .section__image {
        min-height: 35vh;
        max-height: 35vh;
    }

    .section__title {
        font-size: 1.75rem;
    }

    .section__lead {
        font-size: 0.95rem;
    }

    .feature-list {
        font-size: 0.9rem;
    }

    .feature-list li {
        padding: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-md);
    }

    .badge {
        font-size: 0.7rem;
        padding: 0.25rem 0.6rem;
    }

    .site-header {
        padding: 0.75rem;
    }

    .logo {
        width: 100px;
    }

    .dot-nav {
        right: 0.5rem;
        gap: 0.5rem;
    }

    .dot-nav__dot {
        width: 6px;
        height: 6px;
    }

    .stats {
        margin: var(--spacing-sm) 0;
    }

    .timeline-block {
        margin-bottom: var(--spacing-md);
    }

    .benefits {
        gap: var(--spacing-xs);
    }

    .example-cta {
        padding: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }
}/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .dot-nav,
    .cta-button {
        display: none;
    }
    
    .section {
        height: auto;
        page-break-inside: avoid;
    }
}

/* ============================================
   Accessibility
   ============================================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles */
*:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   High Contrast Mode Support
   ============================================ */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-text-light: #333333;
    }
    
    .section__image::after {
        display: none;
    }
}