/* ========================================
   CASE STUDY TEMPLATE STYLES
   Professional UX Portfolio Design System
   ======================================== */

/* ========================================
   CSS VARIABLES - Case Study Specific
   ======================================== */
:root {
    /* Section accent colors - default */
    --cs-story-accent: #f59e0b;
    --cs-challenge-accent: #ef4444;
    --cs-research-accent: #8b5cf6;
    --cs-solution-accent: #10b981;
    --cs-design-accent: #3b82f6;
    --cs-conclusion-accent: #06b6d4;
    
    /* Project theme colors - will be overridden per project */
    --cs-primary: #60a5fa;
    --cs-primary-soft: rgba(96, 165, 250, 0.1);
    --cs-primary-glow: rgba(96, 165, 250, 0.3);
    
    /* Case study spacing */
    --cs-section-gap: clamp(80px, 12vw, 160px);
    --cs-content-gap: clamp(40px, 6vw, 80px);
}

/* ========================================
   SMOOTH PAGE LOAD ANIMATIONS
   ======================================== */
.cs-loading {
    opacity: 0;
}

.cs-loaded {
    opacity: 1;
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Hero elements stagger animation */
.cs-loaded .hero-badge {
    animation: smoothFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

.cs-loaded .hero-title {
    animation: smoothFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.cs-loaded .hero-tagline {
    animation: smoothFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

.cs-loaded .hero-meta-grid {
    animation: smoothFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.cs-loaded .hero-mockup {
    animation: smoothFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.5s both;
}

.cs-loaded .hero-tldr {
    animation: smoothFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}

@keyframes smoothFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section smooth reveal */
.cs-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.cs-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered children animation */
.cs-section.visible .context-card,
.cs-section.visible .pain-point-item,
.cs-section.visible .pain-point-card,
.cs-section.visible .method-card,
.cs-section.visible .insight-card,
.cs-section.visible .feature-block,
.cs-section.visible .metric-card,
.cs-section.visible .learning-card,
.cs-section.visible .pillar-card,
.cs-section.visible .persona-card,
.cs-section.visible .feature-card,
.cs-section.visible .outcome-card,
.cs-section.visible .goal-item,
.cs-section.visible .flow-step,
.cs-section.visible .phase-block {
    animation: staggerFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.cs-section.visible .context-card:nth-child(1),
.cs-section.visible .pain-point-item:nth-child(1),
.cs-section.visible .pain-point-card:nth-child(1),
.cs-section.visible .method-card:nth-child(1),
.cs-section.visible .insight-card:nth-child(1),
.cs-section.visible .pillar-card:nth-child(1),
.cs-section.visible .persona-card:nth-child(1),
.cs-section.visible .feature-card:nth-child(1),
.cs-section.visible .metric-card:nth-child(1),
.cs-section.visible .outcome-card:nth-child(1),
.cs-section.visible .learning-card:nth-child(1),
.cs-section.visible .goal-item:nth-child(1),
.cs-section.visible .flow-step:nth-child(1),
.cs-section.visible .phase-block:nth-child(1) { animation-delay: 0.1s; }

.cs-section.visible .context-card:nth-child(2),
.cs-section.visible .pain-point-item:nth-child(2),
.cs-section.visible .pain-point-card:nth-child(2),
.cs-section.visible .method-card:nth-child(2),
.cs-section.visible .insight-card:nth-child(2),
.cs-section.visible .pillar-card:nth-child(2),
.cs-section.visible .persona-card:nth-child(2),
.cs-section.visible .feature-card:nth-child(2),
.cs-section.visible .metric-card:nth-child(2),
.cs-section.visible .outcome-card:nth-child(2),
.cs-section.visible .learning-card:nth-child(2),
.cs-section.visible .goal-item:nth-child(2),
.cs-section.visible .flow-step:nth-child(2),
.cs-section.visible .phase-block:nth-child(2) { animation-delay: 0.2s; }

.cs-section.visible .context-card:nth-child(3),
.cs-section.visible .pain-point-item:nth-child(3),
.cs-section.visible .pain-point-card:nth-child(3),
.cs-section.visible .method-card:nth-child(3),
.cs-section.visible .insight-card:nth-child(3),
.cs-section.visible .pillar-card:nth-child(3),
.cs-section.visible .persona-card:nth-child(3),
.cs-section.visible .feature-card:nth-child(3),
.cs-section.visible .metric-card:nth-child(3),
.cs-section.visible .outcome-card:nth-child(3),
.cs-section.visible .learning-card:nth-child(3),
.cs-section.visible .goal-item:nth-child(3),
.cs-section.visible .flow-step:nth-child(3),
.cs-section.visible .phase-block:nth-child(3) { animation-delay: 0.3s; }

.cs-section.visible .context-card:nth-child(4),
.cs-section.visible .pain-point-item:nth-child(4),
.cs-section.visible .pain-point-card:nth-child(4),
.cs-section.visible .feature-card:nth-child(4),
.cs-section.visible .outcome-card:nth-child(4),
.cs-section.visible .flow-step:nth-child(4) { animation-delay: 0.4s; }

.cs-section.visible .feature-card:nth-child(5),
.cs-section.visible .flow-step:nth-child(5) { animation-delay: 0.5s; }

.cs-section.visible .feature-card:nth-child(6) { animation-delay: 0.6s; }
.cs-section.visible .feature-card:nth-child(7) { animation-delay: 0.7s; }
.cs-section.visible .feature-card:nth-child(8) { animation-delay: 0.8s; }
.cs-section.visible .feature-card:nth-child(9) { animation-delay: 0.9s; }

@keyframes staggerFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   PAGE LAYOUT
   ======================================== */
.case-study-page {
    background: var(--color-bg);
    position: relative;
    overflow-x: hidden;
}

.case-study-main {
    /* Nav is now overlay - doesn't affect content */
}

/* ========================================
   FLOATING PROGRESS NAVIGATION - Compact Pill (All Screens)
   ======================================== */
.case-study-nav {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0;
    padding: 0;
    background: rgba(20, 20, 25, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.case-study-nav.visible {
    opacity: 1;
    pointer-events: auto;
}

/* Current Section Display - Always visible */
.nav-current-section {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 18px 10px 10px;
    cursor: pointer;
    transition: background 0.3s ease;
    border-radius: 50px;
}

.nav-current-section:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Progress Ring with Section Number */
.nav-progress-ring {
    display: flex;
    position: relative;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-progress-ring svg {
    position: absolute;
    transform: rotate(-90deg);
    width: 44px;
    height: 44px;
}

.progress-ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 3;
}

.progress-ring-circle {
    fill: none;
    stroke: var(--cs-primary, var(--color-accent));
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 100.5; /* 2 * PI * 16 */
    stroke-dashoffset: 100.5;
    transition: stroke-dashoffset 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Section Number */
.progress-percentage {
    position: relative;
    z-index: 1;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

/* Current Section Label */
.nav-current-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Expand Icon */
.nav-expand-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.case-study-nav.expanded .nav-expand-icon {
    transform: rotate(180deg);
}

/* Section List - Popup menu */
.nav-section-list {
    display: none;
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: 12px;
    background: rgba(20, 20, 25, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 8px;
    list-style: none;
    flex-direction: column;
    gap: 2px;
    min-width: 180px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.case-study-nav.expanded .nav-section-list {
    display: flex;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Links in Popup */
.nav-section-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-section-link:hover {
    background: rgba(255, 255, 255, 0.05);
}

.nav-section-link.active {
    background: var(--cs-primary-soft, rgba(96, 165, 250, 0.1));
}

/* Section Number in List */
.nav-section-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.nav-section-link:hover .nav-section-num {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-secondary);
}

.nav-section-link.active .nav-section-num {
    background: var(--cs-primary, var(--color-accent));
    color: var(--color-bg);
}

/* Nav Dot - Hidden, replaced by number */
.nav-dot {
    display: none;
}

/* Label in List */
.nav-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    white-space: nowrap;
    transition: color 0.3s ease;
}

.nav-section-link:hover .nav-label {
    color: var(--color-text-secondary);
}

.nav-section-link.active .nav-label {
    color: var(--color-text);
    font-weight: 600;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .case-study-nav {
        right: 16px;
        bottom: 20px;
    }
    
    .nav-current-label {
        max-width: 100px;
        font-size: 0.875rem;
    }
    
    .nav-current-section {
        padding: 8px 14px 8px 8px;
        gap: 10px;
    }
    
    .nav-progress-ring {
        width: 40px;
        height: 40px;
    }
    
    .nav-progress-ring svg {
        width: 40px;
        height: 40px;
    }
    
    .progress-percentage {
        font-size: 0.8125rem;
    }
}

@media (max-width: 400px) {
    .nav-current-label {
        display: none;
    }
    
    .nav-current-section {
        padding: 8px 12px 8px 8px;
    }
}

/* ========================================
   LIGHTBOX STYLES
   ======================================== */
.cs-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cs-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(20px);
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    z-index: 1;
    transform: scale(0.95);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cs-lightbox.active .lightbox-content {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 12px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.6);
}

/* ========================================
   HERO SECTION
   ======================================== */
.cs-hero {
    min-height: 100vh;
    padding: 120px 0 80px;
    display: flex;
    flex-direction: column;
    gap: 60px;
    position: relative;
}

.hero-content-wrapper,
.cs-hero-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Project Badge */
.hero-badge,
.cs-project-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    margin-bottom: 32px;
}

.badge-icon {
    font-size: 1rem;
}

.badge-text,
.badge-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cs-primary, var(--color-accent));
}

.badge-divider {
    color: var(--color-text-muted);
}

.badge-time,
.badge-read-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Title & Tagline */
.hero-title,
.cs-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: 24px;
}

/* Highlighted keywords in title */
.hero-highlight {
    position: relative;
    color: var(--cs-primary, var(--color-accent));
}

.hero-highlight::after {
    content: '';
    position: absolute;
    bottom: 0.05em;
    left: -0.05em;
    right: -0.05em;
    height: 0.35em;
    background: var(--cs-primary-soft, rgba(96, 165, 250, 0.15));
    border-radius: 4px;
    z-index: -1;
}

/* Story section keyword highlights */
.story-highlight {
    position: relative;
    color: var(--cs-story-accent, var(--cs-primary, var(--color-accent)));
    font-weight: 600;
}

.story-highlight::after {
    content: '';
    position: absolute;
    bottom: 0.08em;
    left: -0.05em;
    right: -0.05em;
    height: 0.3em;
    background: var(--cs-primary-soft, rgba(96, 165, 250, 0.2));
    border-radius: 3px;
    z-index: -1;
    opacity: 0.8;
}

.hero-tagline,
.cs-tagline {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 720px;
    margin-bottom: 48px;
}

/* Meta Grid */
.hero-meta-grid,
.cs-meta-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.meta-item,
.cs-meta-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.meta-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.meta-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .hero-meta-grid,
    .cs-meta-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .hero-meta-grid,
    .cs-meta-grid {
        grid-template-columns: 1fr;
    }
}

/* Hero Visual / Mockup */
.hero-mockup,
.cs-hero-visual {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.mockup-wrapper {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.05) 100%);
    position: relative;
}

.mockup-wrapper::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 21px;
    padding: 1px;
    background: linear-gradient(135deg, var(--cs-primary-soft) 0%, transparent 50%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.mockup-image {
    width: 100%;
    display: block;
}

.visual-caption {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* TL;DR Section */
.hero-tldr,
.cs-tldr {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

.tldr-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--cs-primary, var(--color-accent));
    background: var(--cs-primary-soft, var(--color-accent-soft));
    padding: 8px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.tldr-icon {
    font-size: 1rem;
}

.tldr-content {
    padding: 24px;
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--cs-primary, var(--color-accent));
    border-radius: 0 12px 12px 0;
    margin-bottom: 24px;
}

.tldr-content p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin: 0;
}

.tldr-content strong {
    color: var(--color-text);
    font-weight: 600;
}

.tldr-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.tldr-metric {
    text-align: center;
    padding: 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.tldr-metric:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-2px);
}

.tldr-metric .metric-value {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--cs-primary, var(--color-accent));
    display: block;
    margin-bottom: 8px;
}

.tldr-metric .metric-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

@media (max-width: 640px) {
    .tldr-metrics {
        grid-template-columns: 1fr;
    }
}

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

.section-header,
.cs-section-header {
    max-width: 1000px;
    margin: 0 auto 60px;
    padding: 0 2rem;
    position: relative;
}

.section-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-intro {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 720px;
    margin-bottom: 48px;
    line-height: 1.8;
}

.section-number {
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--cs-primary, var(--color-accent));
    margin-bottom: 16px;
    display: block;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text);
    margin: 0;
}

/* Section-specific accent colors */
.cs-story .section-number { color: var(--cs-story-accent); }
.cs-challenge .section-number { color: var(--cs-challenge-accent); }
.cs-research .section-number { color: var(--cs-research-accent); }
.cs-solution .section-number { color: var(--cs-solution-accent); }
.cs-design .section-number { color: var(--cs-design-accent); }
.cs-reflection .section-number { color: var(--cs-conclusion-accent); }
.cs-conclusion .section-number { color: var(--cs-conclusion-accent); }

/* ========================================
   DECORATIVE ELEMENTS (Per Project)
   ======================================== */
.cs-decorative-elements {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    opacity: 0.03;
    font-size: 8rem;
    user-select: none;
}

/* Pulse - Medical themed decorations */
[data-project="pulse"] .cs-decorative-elements .floating-element:nth-child(1) {
    top: 20%;
    left: 5%;
    font-size: 10rem;
}

[data-project="pulse"] .cs-decorative-elements .floating-element:nth-child(2) {
    top: 60%;
    right: 10%;
    font-size: 6rem;
}

/* Relocate - Map themed decorations */
[data-project="relocate"] .cs-decorative-elements .floating-element:nth-child(1) {
    top: 15%;
    right: 8%;
    font-size: 8rem;
}

[data-project="relocate"] .cs-decorative-elements .floating-element:nth-child(2) {
    bottom: 25%;
    left: 5%;
    font-size: 7rem;
}

/* Resonate - Music themed decorations */
[data-project="resonate"] .cs-decorative-elements .floating-element:nth-child(1) {
    top: 25%;
    left: 3%;
    font-size: 9rem;
}

[data-project="resonate"] .cs-decorative-elements .floating-element:nth-child(2) {
    bottom: 20%;
    right: 5%;
    font-size: 7rem;
}

/* SYF - Mountain/Growth themed decorations */
[data-project="syf"] .cs-decorative-elements .floating-element:nth-child(1) {
    top: 30%;
    right: 5%;
    font-size: 10rem;
}

[data-project="syf"] .cs-decorative-elements .floating-element:nth-child(2) {
    bottom: 15%;
    left: 8%;
    font-size: 8rem;
}

/* ========================================
   PROJECT-SPECIFIC UNIQUE INTERACTIONS
   ======================================== */

/* Pulse - Heartbeat/Pulse effects */
.pulse-glow {
    animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        filter: drop-shadow(0 0 0 transparent);
    }
    50% {
        filter: drop-shadow(0 0 30px var(--cs-primary-glow));
    }
}

.heartbeat-hover {
    transition: transform 0.3s ease;
}

.heartbeat-hover:hover {
    animation: heartbeat 0.6s ease;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.05); }
    50% { transform: scale(1); }
    75% { transform: scale(1.03); }
}

/* Relocate - Map/Pin effects */
.pin-drop {
    animation: pinDrop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
    animation-delay: var(--drop-delay, 0s);
}

@keyframes pinDrop {
    0% {
        opacity: 0;
        transform: translateY(-30px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.spin-once {
    animation: spinOnce 0.6s ease;
}

@keyframes spinOnce {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.2); }
    100% { transform: rotate(360deg) scale(1); }
}

/* Resonate - Sound wave effects */
.sound-wave-border {
    position: relative;
}

.sound-wave-border::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    width: 60px;
    height: 3px;
    background: repeating-linear-gradient(
        90deg,
        var(--cs-primary) 0px,
        var(--cs-primary) 4px,
        transparent 4px,
        transparent 8px
    );
    animation: soundWave 1.5s ease-in-out infinite;
}

@keyframes soundWave {
    0%, 100% {
        width: 60px;
        opacity: 0.5;
    }
    50% {
        width: 100px;
        opacity: 1;
    }
}

.note-float {
    position: relative;
}

.note-float:hover::before {
    content: '♪';
    position: absolute;
    top: -20px;
    right: 10%;
    font-size: 1.5rem;
    color: var(--cs-primary);
    animation: noteFloat 1s ease forwards;
    pointer-events: none;
}

@keyframes noteFloat {
    0% {
        opacity: 0;
        transform: translateY(0) rotate(0deg);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(-30px) rotate(20deg);
    }
}

/* SYF - Growth/Peak effects */
.growth-reveal {
    position: relative;
}

.growth-reveal::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 3px;
    height: 0;
    background: linear-gradient(to top, var(--cs-primary), transparent);
    transition: height 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: calc(var(--step-index, 0) * 0.2s);
}

.cs-section.visible .growth-reveal::before {
    height: 100%;
}

.peak-rise {
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: var(--peak-delay, 0s);
}

.cs-section.visible .peak-rise {
    transform: translateY(0);
    opacity: 1;
}

/* ========================================
   STORY SECTION STYLES
   ======================================== */
.story-opening {
    margin-bottom: 32px;
}

.lead-text {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    line-height: 1.5;
    color: var(--color-text);
}

.lead-text em {
    font-style: italic;
    color: var(--cs-primary, var(--color-accent));
}

.story-narrative {
    max-width: 720px;
}

.story-narrative p {
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.story-quote {
    padding: 32px;
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--cs-primary, var(--color-accent));
    border-radius: 0 12px 12px 0;
    margin: 48px 0;
    max-width: 720px;
}

.story-quote p {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    line-height: 1.5;
    color: var(--color-text);
    margin: 0 0 12px 0;
}

.story-quote cite {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: normal;
}

/* Story Stats */
.story-stats {
    display: flex;
    gap: 3rem;
    padding: 2rem 0;
    border-top: 1px solid var(--color-border);
    margin-top: 3rem;
}

.story-stats .stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.story-stats .stat-value {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--cs-primary, var(--color-accent));
}

.story-stats .stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Story Insight Box */
.story-insight {
    padding: 2rem;
    background: var(--cs-primary-soft, rgba(255, 255, 255, 0.03));
    border-left: 3px solid var(--cs-primary, var(--color-accent));
    border-radius: 0 12px 12px 0;
    margin-top: 2rem;
}

.story-insight .insight-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--cs-primary, var(--color-accent));
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.story-insight p {
    font-size: 1.125rem;
    color: var(--color-text);
    margin: 0;
    line-height: 1.7;
}

/* ========================================
   CHALLENGE SECTION STYLES
   ======================================== */
.challenge-statement {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 48px;
}

.hmw-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--cs-challenge-accent);
    margin-bottom: 16px;
}

.hmw-question {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    line-height: 1.4;
    color: var(--color-text);
}

/* Pain Points Grid */
.pain-points-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.pain-point-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.pain-point-card:hover {
    border-color: var(--cs-challenge-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(239, 68, 68, 0.1);
}

.pain-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
    display: block;
}

.pain-point-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.pain-point-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .pain-points-grid {
        grid-template-columns: 1fr;
    }
}

/* Design Pillars */
.design-pillars {
    margin-top: 4rem;
}

.design-pillars h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.pillar-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.pillar-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--cs-primary, var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

.pillar-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.pillar-number {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--cs-primary, var(--color-accent));
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    display: block;
}

.pillar-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

.pillar-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

@media (max-width: 900px) {
    .pillars-grid {
        grid-template-columns: 1fr;
    }
}

/* Problem Cycle */
.problem-cycle {
    margin-top: 4rem;
}

.problem-cycle h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.cycle-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    align-items: stretch;
}

.cycle-step {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.cycle-step:not(:last-child)::after {
    content: '→';
    position: absolute;
    right: -0.75rem;
    top: 50%;
    transform: translateX(50%) translateY(-50%);
    font-size: 1.25rem;
    color: var(--color-text-muted);
    z-index: 1;
}

.cycle-step:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-4px);
}

.cycle-icon {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    display: block;
}

.cycle-step h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.cycle-step p {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.cycle-arrow {
    display: none; /* Hide the explicit arrows, using ::after instead */
}

@media (max-width: 900px) {
    .cycle-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cycle-step:nth-child(2)::after {
        display: none;
    }
    
    .cycle-step:nth-child(4)::after {
        display: none;
    }
}

@media (max-width: 600px) {
    .cycle-steps {
        grid-template-columns: 1fr;
    }
    
    .cycle-step::after {
        right: 50%;
        top: auto;
        bottom: -0.75rem;
        transform: translateX(50%) translateY(50%) rotate(90deg);
    }
    
    .cycle-step:last-child::after {
        display: none;
    }
}

/* Design Goals / Design Principles Cards */
.design-goals {
    margin-top: 48px;
}

.design-goals h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.goals-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.goal-item {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.goal-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--cs-primary, var(--color-accent)), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.goal-item:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.goal-item:hover::before {
    transform: scaleX(1);
}

.goal-number {
    width: 44px;
    height: 44px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--cs-primary, var(--color-accent));
    background: var(--cs-primary-soft, var(--color-accent-soft));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.goal-item:hover .goal-number {
    background: var(--cs-primary, var(--color-accent));
    color: var(--color-bg);
    transform: scale(1.05);
}

.goal-content h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.goal-content p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

@media (max-width: 900px) {
    .goals-list {
        grid-template-columns: 1fr;
    }
    
    .goal-item {
        flex-direction: row;
        align-items: flex-start;
    }
}

/* Personas Section */
.personas-section {
    margin-top: 4rem;
}

.personas-section h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.personas-intro {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    max-width: 640px;
}

.personas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.persona-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.persona-card:hover {
    border-color: var(--cs-primary, var(--color-border-hover));
    transform: translateY(-4px);
}

.persona-emoji {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    transition: transform 0.3s ease;
}

.persona-card:hover .persona-emoji {
    transform: scale(1.1);
}

.persona-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.persona-role {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--cs-primary, var(--color-accent));
    display: block;
    margin-bottom: 1rem;
}

.persona-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-style: italic;
}

@media (max-width: 900px) {
    .personas-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   RESEARCH SECTION STYLES
   ======================================== */
.research-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 3rem 0;
}

.research-stats .stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.research-stats .stat-item:hover {
    border-color: var(--cs-primary, var(--color-accent));
}

.research-stats .stat-value {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--cs-primary, var(--color-accent));
    display: block;
    margin-bottom: 0.5rem;
}

.research-stats .stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

@media (max-width: 900px) {
    .research-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .research-stats {
        grid-template-columns: 1fr;
    }
}

/* Research Methods */
.research-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.method-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.method-card:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.method-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.method-icon {
    font-size: 1.5rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cs-primary-soft, rgba(255, 255, 255, 0.05));
    border-radius: 12px;
}

.method-header h4,
.method-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.method-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
    flex: 1;
}

.method-stat {
    display: inline-block;
    padding: 4px 10px;
    background: var(--cs-primary-soft);
    color: var(--cs-primary);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.method-why {
    display: none; /* Hidden by default, shown in separate section */
}

.method-finding {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding-top: 16px;
    margin-top: 16px;
    border-top: 1px solid var(--color-border);
}

.finding-stat {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--cs-primary, var(--color-accent));
}

.finding-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Research Why Section - Separate Block */
.research-why-section {
    margin-top: 48px;
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    margin-bottom: 48px;
}

.research-why-section h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.research-why-section h3::before {
    content: '💡';
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.why-item {
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    border-left: 3px solid var(--cs-primary, var(--color-accent));
}

.why-item-header {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.why-item-header span {
    font-size: 1rem;
}

.why-item p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin: 0;
}

@media (max-width: 768px) {
    .research-methods {
        grid-template-columns: 1fr;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
    }
}

/* Key Insights */
.key-insights {
    margin-top: 48px;
}

.key-insights h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 24px;
}

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

.insight-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.insight-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.insight-number {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--cs-primary, var(--color-accent));
    margin-bottom: 12px;
    display: block;
}

.insight-card blockquote {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-style: italic;
    line-height: 1.5;
    color: var(--color-text);
    margin: 0 0 16px 0;
    padding: 0;
    border: none;
    background: none;
}

.insight-analysis {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ========================================
   SOLUTION SECTION STYLES
   ======================================== */
.solution-overview {
    margin-bottom: 48px;
}

.solution-overview h3 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    margin-bottom: 16px;
}

.solution-overview p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 720px;
}

/* Solution Flow */
.solution-flow {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.solution-flow .flow-step {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    gap: 24px;
    align-items: center;
}

.solution-flow .flow-step.reverse {
    grid-template-columns: auto 1fr 1fr;
}

.solution-flow .flow-step.reverse .flow-visual {
    order: 2;
}

.solution-flow .flow-step.reverse .flow-content {
    order: 3;
}

.flow-number {
    width: 48px;
    height: 48px;
    background: var(--cs-primary-soft, var(--color-accent-soft));
    border: 2px solid var(--cs-primary, var(--color-accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--cs-primary, var(--color-accent));
    flex-shrink: 0;
}

.flow-content {
    flex: 1;
}

.flow-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.flow-content p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.flow-rationale {
    font-size: 0.8125rem;
    color: var(--cs-primary, var(--color-accent));
    font-style: italic;
}

.flow-visual {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.flow-visual:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: scale(1.02);
}

.flow-visual img {
    width: 100%;
    display: block;
}

@media (max-width: 900px) {
    .solution-flow .flow-step,
    .solution-flow .flow-step.reverse {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .solution-flow .flow-step.reverse .flow-visual,
    .solution-flow .flow-step.reverse .flow-content {
        order: unset;
    }
    
    .flow-number {
        margin: 0 auto;
    }
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-card:hover {
    border-color: var(--cs-solution-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.1);
}

.feature-icon {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.feature-card > p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.feature-persona {
    font-size: 0.75rem;
    color: var(--cs-primary, var(--color-accent));
    font-weight: 500;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Solution Features with Visuals */
.solution-features {
    display: flex;
    flex-direction: column;
    gap: 4rem;
    margin-top: 3rem;
}

.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.feature-block.reverse {
    direction: rtl;
}

.feature-block.reverse > * {
    direction: ltr;
}

.feature-block .feature-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-tag {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--cs-solution-accent);
    font-weight: 600;
}

.feature-block h4 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-text);
}

.feature-block > .feature-content > p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.feature-rationale {
    padding: 1.25rem;
    background: var(--cs-primary-soft, rgba(255, 255, 255, 0.03));
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--color-text);
}

.feature-rationale strong {
    color: var(--cs-primary, var(--color-accent));
}

.feature-visual {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-visual:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: scale(1.02);
}

.feature-visual img {
    width: 100%;
    display: block;
}

@media (max-width: 900px) {
    .feature-block,
    .feature-block.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }
}

/* Screens Showcase */
.screens-showcase {
    margin-top: 64px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 2rem;
}

.screens-showcase h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.showcase-intro {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    max-width: 720px;
}

.screens-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.screen-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen-item:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.screen-image {
    overflow: hidden;
    aspect-ratio: 9 / 16;
    background: rgba(0, 0, 0, 0.2);
}

.screen-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen-item:hover .screen-image img {
    transform: scale(1.03);
}

.screen-info {
    padding: 16px;
}

.screen-info h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.screen-info p {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

@media (max-width: 900px) {
    .screens-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .screens-showcase {
        padding: 0 1.25rem;
    }
    
    .screens-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .screen-info {
        padding: 12px;
    }
    
    .screen-info h4 {
        font-size: 0.875rem;
    }
    
    .screen-info p {
        display: none;
    }
}

/* ========================================
   DESIGN SECTION STYLES
   ======================================== */
.process-phases {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.phase-block {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 32px;
}

.phase-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.phase-number {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cs-design-accent);
    background: rgba(59, 130, 246, 0.15);
    padding: 8px 14px;
    border-radius: 6px;
}

.phase-header h4 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-text);
}

.phase-desc {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 720px;
    margin-bottom: 24px;
}

.phase-learnings {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

.phase-learnings h5 {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cs-design-accent);
    margin-bottom: 12px;
}

.phase-learnings ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.phase-learnings li {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
    line-height: 1.6;
}

.phase-learnings li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--cs-design-accent);
}

.phase-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.phase-image {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.phase-image:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: scale(1.02);
}

.phase-image img {
    width: 100%;
    display: block;
}

/* Design System Preview */
.design-system-preview {
    margin-top: 4rem;
}

.design-system-preview h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.design-system-image {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.design-system-image img {
    width: 100%;
    display: block;
}

.design-system-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .design-system-images {
        grid-template-columns: 1fr;
    }
}

/* Design Principles - "App Is / App Is Not" Cards */
.design-principles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 3rem 0;
}

.principle-column {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.principle-column:first-child {
    border-color: rgba(34, 197, 94, 0.3);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.05) 0%, transparent 100%);
}

.principle-column:first-child h4 {
    color: #22c55e;
}

.principle-column:first-child h4::before {
    content: '✓';
    margin-right: 0.5rem;
}

.principle-column:first-child li::before {
    color: #22c55e;
}

.principle-column:last-child {
    border-color: rgba(239, 68, 68, 0.3);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, transparent 100%);
}

.principle-column:last-child h4 {
    color: #ef4444;
}

.principle-column:last-child h4::before {
    content: '✗';
    margin-right: 0.5rem;
}

.principle-column:last-child li::before {
    color: #ef4444;
}

.principle-column h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.principle-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.principle-column li {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.principle-column li:last-child {
    margin-bottom: 0;
}

.principle-column li::before {
    content: '•';
    position: absolute;
    left: 0;
}

@media (max-width: 768px) {
    .design-principles {
        grid-template-columns: 1fr;
    }
}

/* Prototype Section */
.prototype-section {
    margin-top: 64px;
    text-align: center;
}

.prototype-section h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.prototype-section > p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.prototype-embed {
    max-width: 1000px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.prototype-embed iframe {
    width: 100%;
    aspect-ratio: 16 / 10;
    border: none;
}

.prototype-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    color: var(--cs-primary, var(--color-accent));
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.prototype-link:hover {
    opacity: 0.7;
}

/* ========================================
   REFLECTION SECTION STYLES
   ======================================== */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

/* For 3-item grids, ensure full width span */
.outcomes-grid:has(.outcome-card:nth-child(3):last-child) {
    grid-template-columns: repeat(3, 1fr);
}

/* For 4-item grids */
.outcomes-grid:has(.outcome-card:nth-child(4):last-child) {
    grid-template-columns: repeat(4, 1fr);
}

.outcome-card {
    text-align: center;
    padding: 28px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.outcome-card:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.outcome-icon {
    font-size: 1.75rem;
    margin-bottom: 16px;
    display: block;
}

.outcome-value {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--cs-primary, var(--color-accent));
    display: block;
    margin-bottom: 8px;
    line-height: 1.3;
}

.outcome-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

@media (max-width: 1024px) {
    .outcomes-grid,
    .outcomes-grid:has(.outcome-card:nth-child(4):last-child) {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .outcomes-grid:has(.outcome-card:nth-child(3):last-child) {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .outcomes-grid:has(.outcome-card:nth-child(3):last-child) {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .outcomes-grid,
    .outcomes-grid:has(.outcome-card:nth-child(4):last-child) {
        grid-template-columns: 1fr;
    }
}

/* Learnings Block */
.learnings-block {
    margin-bottom: 48px;
}

.learnings-block h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.learnings-intro {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    max-width: 720px;
}

.learnings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.learning-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.learning-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.learning-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.learning-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.learning-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

@media (max-width: 900px) {
    .learnings-grid {
        grid-template-columns: 1fr;
    }
}

/* Comparison Table */
.results-comparison {
    margin-bottom: 4rem;
}

.results-comparison h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.comparison-table {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1.5fr;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row.header {
    background: rgba(255, 255, 255, 0.02);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    font-weight: 600;
}

.comparison-row span:first-child {
    color: var(--color-text);
    font-weight: 500;
}

.comparison-row span:nth-child(2) {
    color: var(--color-text-muted);
}

.comparison-row span.highlight {
    color: var(--cs-primary, var(--color-accent));
    font-weight: 600;
}

@media (max-width: 768px) {
    .comparison-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .comparison-row.header {
        display: none;
    }
}

/* Reflection Quote */
.reflection-quote {
    margin-bottom: 3rem;
}

.reflection-quote blockquote {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-style: italic;
    line-height: 1.5;
    color: var(--color-text);
    text-align: center;
    padding: 2rem;
    background: var(--color-bg-card);
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

/* Next Steps - Visual Roadmap Style */
.next-steps {
    margin-top: 64px;
    position: relative;
}

.next-steps-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.next-steps-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--cs-primary-soft) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 1px solid var(--cs-primary, var(--color-accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.next-steps h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin: 0;
    color: var(--color-text);
}

.next-steps-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.next-steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    position: relative;
}

/* Connecting line decoration */
.next-steps-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, 
        var(--cs-primary, var(--color-accent)) 0%, 
        transparent 100%);
    opacity: 0.2;
    display: none;
}

@media (min-width: 769px) {
    .next-steps-grid::before {
        display: block;
    }
}

.next-step-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    gap: 16px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.next-step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--cs-primary, var(--color-accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.next-step-card:hover {
    border-color: var(--cs-primary, var(--color-accent));
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2),
                0 0 0 1px var(--cs-primary-soft);
}

.next-step-card:hover::before {
    opacity: 1;
}

.next-step-number {
    width: 36px;
    height: 36px;
    background: var(--cs-primary-soft, rgba(255, 255, 255, 0.05));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--cs-primary, var(--color-accent));
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.next-step-card:hover .next-step-number {
    background: var(--cs-primary, var(--color-accent));
    color: var(--color-bg);
    transform: scale(1.1);
}

.next-step-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.next-step-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.4;
}

.next-step-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.next-step-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--cs-primary, var(--color-accent));
    background: var(--cs-primary-soft, rgba(255, 255, 255, 0.03));
    padding: 4px 10px;
    border-radius: 6px;
    width: fit-content;
    margin-top: 4px;
}

.next-step-tag-icon {
    font-size: 0.75rem;
}

@media (max-width: 768px) {
    .next-steps-grid {
        grid-template-columns: 1fr;
    }
    
    .next-step-card {
        padding: 20px;
    }
}

/* Animation for next-step cards on section reveal */
.cs-section.visible .next-step-card {
    animation: staggerFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.cs-section.visible .next-step-card:nth-child(1) { animation-delay: 0.1s; }
.cs-section.visible .next-step-card:nth-child(2) { animation-delay: 0.2s; }
.cs-section.visible .next-step-card:nth-child(3) { animation-delay: 0.3s; }
.cs-section.visible .next-step-card:nth-child(4) { animation-delay: 0.4s; }

/* Legacy support for simple list format */
.next-steps-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.next-steps-list li {
    font-size: 1rem;
    color: var(--color-text-secondary);
    padding-left: 28px;
    position: relative;
    line-height: 1.7;
}

.next-steps-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--cs-primary, var(--color-accent));
    font-weight: 600;
}

/* ========================================
   FOOTER NAVIGATION
   ======================================== */
.case-footer {
    padding: 64px 2rem;
    border-top: 1px solid var(--color-border);
    margin-top: 80px;
}

.footer-nav {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 24px;
}

.footer-link {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 20px 28px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    min-width: 200px;
}

.footer-link:hover {
    border-color: var(--cs-primary, var(--color-accent));
    background: var(--cs-primary-soft, var(--color-accent-soft));
    transform: translateY(-2px);
}

.footer-link.next {
    text-align: right;
}

.footer-link-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.footer-link-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
}

@media (max-width: 640px) {
    .footer-nav {
        flex-direction: column;
    }
    
    .footer-link {
        min-width: auto;
    }
    
    .footer-link.next {
        text-align: left;
    }
}

/* ========================================
   VISUAL PLACEHOLDERS
   ======================================== */
.visual-placeholder,
.cs-visual-placeholder {
    margin-top: 48px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 2px dashed var(--color-border);
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.visual-placeholder:hover,
.cs-visual-placeholder:hover {
    border-color: var(--cs-primary, var(--color-accent));
    background: linear-gradient(135deg, var(--cs-primary-soft) 0%, rgba(96, 165, 250, 0.08) 100%);
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.placeholder-icon {
    font-size: 2.5rem;
    opacity: 0.6;
}

.placeholder-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ========================================
   REDUCED MOTION
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    .cs-loaded .hero-badge,
    .cs-loaded .hero-title,
    .cs-loaded .hero-tagline,
    .cs-loaded .hero-meta-grid,
    .cs-loaded .hero-mockup,
    .cs-loaded .hero-tldr {
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .cs-section {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .cs-section.visible .context-card,
    .cs-section.visible .pain-point-item,
    .cs-section.visible .pain-point-card,
    .cs-section.visible .method-card,
    .cs-section.visible .insight-card,
    .cs-section.visible .feature-block,
    .cs-section.visible .metric-card,
    .cs-section.visible .learning-card,
    .cs-section.visible .pillar-card,
    .cs-section.visible .persona-card,
    .cs-section.visible .feature-card,
    .cs-section.visible .outcome-card,
    .cs-section.visible .goal-item,
    .cs-section.visible .flow-step,
    .cs-section.visible .phase-block {
        animation: none;
    }
    
    .pulse-glow,
    .heartbeat-hover:hover,
    .pin-drop,
    .spin-once,
    .sound-wave-border::after,
    .note-float:hover::before {
        animation: none;
    }
}

/* ========================================
   RESPONSIVE UTILITIES
   ======================================== */
@media (max-width: 480px) {
    .hero-title,
    .cs-title {
        font-size: clamp(2.25rem, 10vw, 3rem);
    }
    
    .section-title {
        font-size: clamp(1.75rem, 6vw, 2rem);
    }
    
    .hero-content-wrapper,
    .cs-hero-content,
    .section-header,
    .cs-section-header,
    .section-content,
    .cs-content-block {
        padding: 0 1.25rem;
    }
    
    .hero-mockup,
    .cs-hero-visual,
    .hero-tldr,
    .cs-tldr {
        padding: 0 1.25rem;
    }
    
    .story-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* ========================================
   MOBILE-SPECIFIC IMPROVEMENTS
   ======================================== */
@media (max-width: 640px) {
    .cs-hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .prototype-embed iframe {
        aspect-ratio: 9 / 16;
        min-height: 500px;
    }
    
    /* Better touch targets for mobile */
    .nav-section-link {
        padding: 14px 18px;
        min-height: 48px;
    }
    
    .footer-link {
        padding: 16px 20px;
        min-height: 72px;
    }
    
    /* Scroll indicator for screens grid on mobile */
    .screens-grid {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        gap: 12px;
        padding-bottom: 16px;
        -webkit-overflow-scrolling: touch;
    }
    
    .screen-item {
        flex: 0 0 70%;
        scroll-snap-align: start;
    }
}

/* Landscape phone improvements */
@media (max-height: 500px) and (orientation: landscape) {
    .cs-hero {
        min-height: auto;
        padding: 80px 0 40px;
    }
    
    .hero-meta-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   ACCESSIBILITY ENHANCEMENTS
   ======================================== */
/* Focus states for all interactive elements */
.nav-section-link:focus-visible,
.footer-link:focus-visible,
.phase-image:focus-visible,
.screen-item:focus-visible {
    outline: 2px solid var(--cs-primary, var(--color-accent));
    outline-offset: 3px;
    border-radius: 8px;
}

/* Make images clickable for lightbox with keyboard */
.phase-image[tabindex]:focus-visible,
.screen-image[tabindex]:focus-visible {
    outline: 2px solid var(--cs-primary, var(--color-accent));
    outline-offset: 2px;
}

/* Better visible focus for prototype link */
.prototype-link:focus-visible {
    outline: 2px solid var(--cs-primary, var(--color-accent));
    outline-offset: 4px;
    border-radius: 4px;
}

/* High contrast mode improvements */
@media (prefers-contrast: high) {
    .pain-point-card,
    .method-card,
    .insight-card,
    .learning-card,
    .outcome-card,
    .next-step-card {
        border-width: 2px;
    }
    
    .section-number {
        font-weight: 800;
    }
}