/* ===== case study page specific styles ===== */

/* back link */
.back-link {
    position: fixed;
    top: 6rem;
    left: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    z-index: 50;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--text-primary);
}

@media (min-width: 1024px) {
    .back-link {
        left: 3rem;
    }
}

/* cinematic hero */
.case-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: flex-end;
    padding-bottom: 4rem;
    overflow: hidden;
}

.case-hero-bg {
    position: absolute;
    inset: 0;
}

.case-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--bg-primary), rgba(10, 10, 11, 0.7) 50%, transparent);
}

.case-hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
}

.case-category {
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.case-hero-logo {
    width: 100px;
    height: auto;
    margin-bottom: 1.5rem;
    border-radius: 1rem;
}

.case-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.case-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.meta-pill {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border-radius: 9999px;
    font-size: 0.875rem;
}

.meta-pill svg {
    color: var(--accent);
}

/* case sections */
.case-section {
    padding: 5rem 0;
}

.case-section-alt {
    background: var(--bg-secondary);
}

.case-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .case-grid {
        grid-template-columns: 1fr 2fr;
        gap: 4rem;
    }
}

.case-section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
}

.case-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.case-text:last-child {
    margin-bottom: 0;
}

/* problem quote */
.problem-quote {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--accent);
    border-radius: 0 0.5rem 0.5rem 0;
    margin-top: 2rem;
}

.problem-quote p {
    font-style: italic;
    color: var(--text-secondary);
}

/* goals grid */
.goals-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .goals-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.goal-card {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    transition: border-color 0.3s ease;
}

.goal-card:hover {
    border-color: rgba(212, 165, 116, 0.2);
}

.goal-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: rgba(212, 165, 116, 0.2);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.goal-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* users grid */
.users-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .users-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.user-card {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
}

.user-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.user-value {
    color: var(--text-primary);
}

/* section header center */
.section-header-center {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* innovations grid */
.innovations-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .innovations-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.innovation-card {
    padding: 2rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), transparent);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1rem;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

[data-theme="light"] .innovation-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-soft);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.innovation-card:hover {
    border-color: rgba(212, 165, 116, 0.2);
    transform: translateY(-4px);
}

.innovation-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 165, 116, 0.1);
    border-radius: 0.75rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    transition: background-color 0.3s ease;
}

.innovation-card:hover .innovation-icon {
    background: rgba(212, 165, 116, 0.2);
}

.innovation-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

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

/* design system items */
.design-system-items {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.ds-item {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0.75rem;
}

[data-theme="light"] .ds-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-soft);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ds-item-title {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.ds-item-text {
    color: var(--text-secondary);
}

.ds-colors {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ds-color-tag {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    font-size: 0.875rem;
}

[data-theme="light"] .ds-color-tag {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-soft);
    color: var(--text-primary);
}

/* showcase */
.case-showcase {
    background: var(--bg-primary);
}

.showcase-image {
    border-radius: 1rem;
    overflow: hidden;
}

.showcase-image img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

/* impact list */
.impact-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.impact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: rgba(212, 165, 116, 0.05);
    border: 1px solid rgba(212, 165, 116, 0.1);
    border-radius: 0.75rem;
}

.impact-dot {
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    margin-top: 0.5rem;
    border-radius: 50%;
    background: var(--accent);
}

.impact-item p {
    color: var(--text-primary);
    font-weight: 500;
}

/* case cta */
.case-cta {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.cta-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.case-cta .cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

/* ===== hyundai × b&o case study specific styles ===== */

/* problem cards */
.problem-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 2rem 0;
}

@media (min-width: 640px) {
    .problem-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

.problem-card {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    transition: border-color 0.3s ease;
}

.problem-card:hover {
    border-color: rgba(212, 165, 116, 0.2);
}

.problem-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: rgba(255, 133, 194, 0.15);
    color: var(--accent-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.problem-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* goal cards enhancement */
.goal-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* user personas */
.user-personas {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .user-personas {
        grid-template-columns: repeat(3, 1fr);
    }
}

.persona-card {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.persona-card:hover {
    border-color: rgba(123, 124, 255, 0.3);
    transform: translateY(-4px);
}

.persona-header {
    margin-bottom: 1.25rem;
}

.persona-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(123, 124, 255, 0.15);
    border-radius: 0.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.persona-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.persona-traits {
    list-style: none;
    padding: 0;
    margin: 0;
}

.persona-traits li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.persona-traits li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* context section */
.context-section {
    margin-bottom: 2.5rem;
}

.context-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.context-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.context-tag {
    padding: 0.5rem 1rem;
    background: rgba(123, 124, 255, 0.1);
    border: 1px solid rgba(123, 124, 255, 0.2);
    border-radius: 9999px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* constraints */
.constraints-section {
    margin-top: 2rem;
}

.constraints-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .constraints-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.constraint-item {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 0.5rem;
}

.constraint-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.constraint-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* innovation cards featured */
.innovation-featured {
    display: flex;
    flex-direction: column;
}

.innovation-label {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-secondary);
    background: rgba(255, 133, 194, 0.15);
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    margin-bottom: 0.75rem;
    width: fit-content;
}

.innovation-shift {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 1.25rem 0;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
}

[data-theme="light"] .innovation-shift {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-soft);
}

.shift-from {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: line-through;
    opacity: 0.7;
}

.shift-to {
    font-size: 0.75rem;
    color: var(--accent-tertiary);
    font-weight: 500;
}

.innovation-shift svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.innovation-outcome {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-style: italic;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: auto;
}

/* design system enhancements */
.ds-item-purpose {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.ds-typography-traits,
.ds-motion-traits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ds-trait {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

[data-theme="light"] .ds-trait {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-soft);
    color: var(--text-primary);
}

/* learnings grid */
.learnings-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .learnings-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.learning-card {
    padding: 1.5rem;
    background: rgba(111, 231, 200, 0.05);
    border: 1px solid rgba(111, 231, 200, 0.1);
    border-radius: 0.75rem;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.learning-card:hover {
    border-color: rgba(111, 231, 200, 0.3);
    transform: translateY(-4px);
}

.learning-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: rgba(111, 231, 200, 0.2);
    color: var(--accent-tertiary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.learning-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.learning-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* light mode adjustments */
[data-theme="light"] .problem-card,
[data-theme="light"] .persona-card,
[data-theme="light"] .constraint-item,
[data-theme="light"] .learning-card {
    background: var(--bg-secondary);
    border-color: var(--border-soft);
}

[data-theme="light"] .context-tag {
    background: rgba(106, 108, 255, 0.08);
    border-color: rgba(106, 108, 255, 0.15);
}

[data-theme="light"] .innovation-shift {
    background: var(--bg-tertiary);
}

[data-theme="light"] .persona-traits li {
    border-color: var(--border-subtle);
}

/* ===== bracket case study specific styles ===== */

/* gradient hero for bracket */
.case-hero-gradient {
    min-height: 60vh;
    background: var(--bg-primary);
}

.case-hero-bg-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(123, 124, 255, 0.15), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(111, 231, 200, 0.1), transparent 50%),
        var(--bg-primary);
}

[data-theme="light"] .case-hero-bg-gradient {
    background: 
        radial-gradient(circle at 30% 20%, rgba(106, 108, 255, 0.1), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(63, 209, 162, 0.08), transparent 50%),
        var(--bg-primary);
}

/* consequences section */
.impact-consequences {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(255, 133, 194, 0.05);
    border: 1px solid rgba(255, 133, 194, 0.1);
    border-radius: 0.75rem;
}

[data-theme="light"] .impact-consequences {
    background: rgba(255, 111, 177, 0.05);
    border-color: rgba(255, 111, 177, 0.15);
}

.consequences-title {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-secondary);
    margin-bottom: 1rem;
}

.consequences-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.consequence-tag {
    padding: 0.5rem 1rem;
    background: rgba(255, 133, 194, 0.1);
    border: 1px solid rgba(255, 133, 194, 0.15);
    border-radius: 9999px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

[data-theme="light"] .consequence-tag {
    background: rgba(255, 111, 177, 0.08);
    border-color: rgba(255, 111, 177, 0.2);
    color: var(--text-primary);
}

/* key learning highlight */
.key-learning-highlight {
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(123, 124, 255, 0.08), rgba(111, 231, 200, 0.05));
    border: 1px solid rgba(123, 124, 255, 0.15);
    border-radius: 1rem;
    text-align: center;
}

[data-theme="light"] .key-learning-highlight {
    background: linear-gradient(135deg, rgba(106, 108, 255, 0.06), rgba(63, 209, 162, 0.04));
    border-color: rgba(106, 108, 255, 0.15);
}

.key-learning-title {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.key-learning-text {
    font-size: 1.125rem;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.key-learning-conclusion {
    font-size: 1rem;
    color: var(--accent-tertiary);
    font-weight: 500;
    font-style: italic;
}

/* ===== harman kardon case study specific styles ===== */

/* gradient hero for harman */
.case-hero-harman {
    min-height: 60vh;
    background: var(--bg-primary);
}

.case-hero-bg-harman {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 191, 105, 0.12), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(123, 124, 255, 0.1), transparent 45%),
        var(--bg-primary);
}

[data-theme="light"] .case-hero-bg-harman {
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 166, 43, 0.1), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(106, 108, 255, 0.08), transparent 45%),
        var(--bg-primary);
}

/* verizon hero gradient */
.case-hero-verizon {
    min-height: 70vh;
}

.case-hero-bg-verizon {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(238, 0, 0, 0.15), transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(0, 0, 0, 0.3), transparent 50%),
        linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
}

[data-theme="light"] .case-hero-bg-verizon {
    background: 
        radial-gradient(circle at 30% 40%, rgba(238, 0, 0, 0.1), transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(0, 0, 0, 0.03), transparent 50%),
        linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
}

/* 3-column goals grid */
.goals-grid-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .goals-grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 2x2 innovations grid */
.innovations-grid-2x2 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .innovations-grid-2x2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* showcase placeholder */
.showcase-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(255, 191, 105, 0.08), rgba(123, 124, 255, 0.05));
    border: 1px dashed rgba(255, 255, 255, 0.15);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .showcase-placeholder {
    background: linear-gradient(135deg, rgba(255, 166, 43, 0.06), rgba(106, 108, 255, 0.04));
    border-color: var(--border-soft);
}

.showcase-placeholder-text {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: lowercase;
}

/* ===== visual-first case study styles ===== */

/* quick stats bar */
.case-stats {
    padding: 2rem 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .case-stats {
    border-color: var(--border-soft);
}

.stats-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
}

@media (min-width: 768px) {
    .stats-row {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-primary);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* visual sections */
.visual-section {
    text-align: center;
}

.visual-header,
.visual-header-center {
    text-align: center;
    margin-bottom: 3rem;
}

.visual-header .case-section-title,
.visual-header-center .case-section-title {
    margin-top: 0.5rem;
}

/* problem visual grid */
.problem-visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (min-width: 768px) {
    .problem-visual-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
}

.problem-visual-card {
    padding: 1.5rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    text-align: center;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.problem-visual-card:hover {
    border-color: rgba(255, 133, 194, 0.3);
    transform: translateY(-4px);
}

[data-theme="light"] .problem-visual-card {
    background: var(--bg-secondary);
    border-color: var(--border-soft);
}

.problem-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.75rem;
}

.problem-visual-card h4 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.problem-visual-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* user journey image */
.user-journey-image {
    width: 100%;
    margin: 2rem 0;
}

.user-journey-image .journey-img {
    width: 100%;
    border-radius: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .user-journey-image .journey-img {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

/* user journey flow visual */
.user-journey-flow {
    background: var(--bg-secondary);
    border-radius: 1.5rem;
    padding: 3rem 2rem;
    text-align: center;
}

.journey-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.journey-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.journey-icon {
    font-size: 2rem;
}

.journey-label {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: lowercase;
}

.journey-arrow {
    font-size: 1.25rem;
    color: var(--text-muted);
    opacity: 0.5;
}

.journey-insight {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .journey-steps {
        gap: 0.75rem;
    }
    
    .journey-icon {
        font-size: 1.5rem;
    }
    
    .journey-label {
        font-size: 0.75rem;
    }
    
    .journey-arrow {
        font-size: 1rem;
    }
    
    .journey-insight {
        font-size: 0.875rem;
    }
}

/* image placeholders */
.image-placeholder,
.image-placeholder-wide {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(123, 124, 255, 0.05), rgba(111, 231, 200, 0.03));
    border: 2px dashed rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .image-placeholder,
[data-theme="light"] .image-placeholder-wide {
    background: linear-gradient(135deg, rgba(106, 108, 255, 0.04), rgba(63, 209, 162, 0.02));
    border-color: var(--border-soft);
}

.placeholder-content {
    text-align: center;
    padding: 2rem;
}

.placeholder-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.placeholder-label {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.placeholder-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.image-caption {
    font-size: 0.75rem;
    color: var(--accent-primary);
    text-align: center;
    margin-top: 1rem;
    font-style: italic;
}

/* solution flow visual */
.solution-visual {
    text-align: center;
}

.solution-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .solution-flow {
        gap: 1rem;
    }
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: rgba(123, 124, 255, 0.1);
    border: 1px solid rgba(123, 124, 255, 0.2);
    border-radius: 0.75rem;
}

[data-theme="light"] .flow-step {
    background: rgba(106, 108, 255, 0.08);
    border-color: rgba(106, 108, 255, 0.15);
}

.flow-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.flow-label {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.solution-tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* screen showcase with rationale */
.screen-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
    align-items: start;
}

@media (min-width: 768px) {
    .screen-showcase {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
    
    .screen-showcase-reverse {
        direction: rtl;
    }
    
    .screen-showcase-reverse > * {
        direction: ltr;
    }
}

.screen-image .image-placeholder {
    aspect-ratio: 4/3;
}

.screen-image .screen-img {
    width: 100%;
    border-radius: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .screen-image .screen-img {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.screen-rationale {
    padding: 1.5rem 0;
}

.rationale-intro {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.rationale-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.ux-rationale-box {
    padding: 1.25rem;
    background: rgba(111, 231, 200, 0.08);
    border-left: 3px solid var(--accent-tertiary);
    border-radius: 0 0.5rem 0.5rem 0;
    margin-bottom: 1.5rem;
}

[data-theme="light"] .ux-rationale-box {
    background: rgba(63, 209, 162, 0.06);
}

.rationale-label {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-tertiary);
    margin-bottom: 0.5rem;
}

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

.rationale-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.rationale-text:last-child {
    margin-bottom: 0;
}

.rationale-text strong {
    color: var(--text-primary);
}

.ui-callouts {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.callout-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.callout-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--accent-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.callout-item p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.callout-item p strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

/* decisions grid */
.decisions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .decisions-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

.decision-card {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    text-align: center;
}

[data-theme="light"] .decision-card {
    background: var(--bg-secondary);
    border-color: var(--border-soft);
}

.decision-before-after {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.decision-before {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: line-through;
    opacity: 0.7;
}

.decision-arrow {
    color: var(--accent-tertiary);
    font-weight: 600;
}

.decision-after {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-tertiary);
}

.decision-reason {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* results visual */
.results-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .results-visual {
        grid-template-columns: repeat(4, 1fr);
    }
}

.result-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(111, 231, 200, 0.08);
    border: 1px solid rgba(111, 231, 200, 0.15);
    border-radius: 0.5rem;
}

[data-theme="light"] .result-item {
    background: rgba(63, 209, 162, 0.06);
    border-color: rgba(63, 209, 162, 0.15);
}

.result-icon {
    color: var(--accent-tertiary);
    font-weight: 600;
    font-size: 1rem;
}

.result-text {
    font-size: 0.8125rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ===== comparison visual ===== */
.comparison-visual {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    align-items: center;
}

@media (min-width: 768px) {
    .comparison-visual {
        grid-template-columns: 1fr auto 1fr;
        gap: 2rem;
    }
}

.comparison-side {
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
}

.comparison-before {
    background: rgba(255, 133, 194, 0.08);
    border: 1px solid rgba(255, 133, 194, 0.15);
}

.comparison-after {
    background: rgba(111, 231, 200, 0.08);
    border: 1px solid rgba(111, 231, 200, 0.15);
}

[data-theme="light"] .comparison-before {
    background: rgba(255, 111, 177, 0.06);
    border-color: rgba(255, 111, 177, 0.15);
}

[data-theme="light"] .comparison-after {
    background: rgba(63, 209, 162, 0.06);
    border-color: rgba(63, 209, 162, 0.15);
}

.comparison-label {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.comparison-before .comparison-label {
    color: var(--accent-secondary);
}

.comparison-after .comparison-label {
    color: var(--accent-tertiary);
}

.comparison-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.comparison-items span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.comparison-before .comparison-items span {
    text-decoration: line-through;
    opacity: 0.7;
}

.comparison-after .comparison-items span {
    font-weight: 500;
    color: var(--text-primary);
}

.comparison-arrow {
    font-size: 2rem;
    color: var(--accent-primary);
    font-weight: 300;
    display: none;
}

@media (min-width: 768px) {
    .comparison-arrow {
        display: block;
    }
}

/* ===== innovations visual ===== */
.innovations-visual {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .innovations-visual {
        grid-template-columns: repeat(3, 1fr);
    }
}

.innovation-visual-card {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    text-align: center;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.innovation-visual-card:hover {
    border-color: rgba(123, 124, 255, 0.3);
    transform: translateY(-4px);
}

[data-theme="light"] .innovation-visual-card {
    background: var(--bg-secondary);
    border-color: var(--border-soft);
}

.innovation-number {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(123, 124, 255, 0.15);
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    margin-bottom: 1rem;
}

.innovation-visual-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.innovation-short {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.innovation-shift-visual {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .innovation-shift-visual {
    border-color: var(--border-subtle);
}

.innovation-shift-visual .shift-from {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.innovation-shift-visual .shift-to {
    font-size: 0.8125rem;
    color: var(--accent-tertiary);
    font-weight: 500;
}

/* ===== design language visual ===== */
.design-language-visual {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .design-language-visual {
        grid-template-columns: repeat(3, 1fr);
    }
}

.dl-item-visual {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    text-align: center;
}

[data-theme="light"] .dl-item-visual {
    background: var(--bg-secondary);
    border-color: var(--border-soft);
}

.dl-item-visual h4 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.dl-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.dl-tags span {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 9999px;
    color: var(--text-secondary);
}

[data-theme="light"] .dl-tags span {
    background: var(--bg-tertiary);
}

.dl-purpose {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}