/* ===================================
   ClaiRe Case Study - Custom CSS
   =================================== */

/* Breadcrumb Section */
.breadcrumb-section {
    padding: 100px 0 20px;
    background: var(--color-bg);
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 8px;
}

.breadcrumb-nav li a {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.breadcrumb-nav li a:hover {
    color: var(--color-linkedin);
}

.breadcrumb-nav .separator {
    color: var(--color-text-muted);
}

.breadcrumb-nav .active {
    color: var(--color-text);
    font-weight: 500;
}

/* ===================================
   Case Study Hero
   =================================== */

.case-hero {
    padding: 60px 0 100px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    text-align: center;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.category-tag,
.year-tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--radius-lg);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-tag {
    background: var(--color-accent);
    color: white;
}

.year-tag {
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.case-hero h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--color-text);
    letter-spacing: -2px;
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--color-text-light);
    margin-bottom: 40px;
}

.hero-details {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

.detail-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}

/* ===================================
   Case Sections Common
   =================================== */

.case-section {
    padding: 80px 0;
}

.case-section:nth-child(even) {
    background: var(--color-card);
}

.case-section:nth-child(odd) {
    background: var(--color-bg);
}

/* ===================================
   Overview Section
   =================================== */

.overview-section {
    background: var(--color-card) !important;
}

.overview-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.lead-text {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===================================
   Problems Section
   =================================== */

.problem-section {
    background: var(--color-bg) !important;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.problem-card {
    background: var(--color-card);
    padding: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    position: relative;
    transition: var(--transition);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.problem-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.problem-icon i {
    font-size: 24px;
    color: white;
}

.problem-number {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 48px;
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
}

.problem-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.problem-card p {
    color: var(--color-text-light);
    line-height: 1.7;
    margin: 0;
}

/* ===================================
   Personas Section
   =================================== */

.personas-section {
    background: var(--color-card) !important;
}

.personas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.persona-card {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition);
}

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

.persona-header {
    background: var(--color-accent);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.persona-avatar {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.persona-avatar i {
    font-size: 24px;
    color: white;
}

.persona-header h3 {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.persona-body {
    padding: 24px;
}

.persona-role {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.persona-needs h4 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

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

.persona-needs li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: var(--color-text);
    font-size: 14px;
}

.persona-needs li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* ===================================
   Process Section
   =================================== */

.process-section {
    background: var(--color-bg) !important;
}

.research-block {
    margin-bottom: 60px;
}

.research-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text);
}

.research-title i {
    color: var(--color-accent);
}

.research-intro {
    color: var(--color-text-light);
    font-size: 1.1rem;
    line-height: 1.7;
    max-width: 800px;
    margin-bottom: 32px;
}

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

.finding-card {
    background: var(--color-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
}

.finding-header {
    margin-bottom: 12px;
}

.finding-number {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent);
}

.finding-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.finding-card p {
    color: var(--color-text-light);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

/* Phase Timeline */
.phase-timeline {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.phase-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    min-width: 160px;
    max-width: 200px;
    position: relative;
}

.phase-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 24px;
    width: 20px;
    height: 2px;
    background: var(--color-border);
}

.phase-marker {
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.phase-number {
    color: white;
    font-size: 18px;
    font-weight: 700;
}

.phase-content h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--color-text);
}

.phase-content p {
    font-size: 13px;
    color: var(--color-text-light);
    margin: 0;
}

/* ===================================
   Information Architecture Section
   =================================== */

.ia-section {
    background: var(--color-card) !important;
}

.ia-principle {
    max-width: 700px;
    margin: 0 auto 40px;
}

.principle-highlight {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-bg);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.principle-highlight i {
    font-size: 32px;
    color: var(--color-accent);
}

.principle-highlight p {
    margin: 0;
    color: var(--color-text-light);
    font-size: 1.1rem;
}

.ia-structure {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.ia-card {
    background: var(--color-bg);
    padding: 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.ia-card.primary {
    border-top: 4px solid var(--color-secondary-dark);
}

.ia-card.secondary {
    border-top: 4px solid var(--color-accent);
}

.ia-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.ia-card-header i {
    font-size: 24px;
    color: var(--color-accent);
}

.ia-card-header h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-text);
}

.ia-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ia-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 14px;
}

.ia-features li:last-child {
    border-bottom: none;
}

.ia-features li i {
    color: var(--color-accent);
    font-size: 14px;
}

.ia-description {
    color: var(--color-text-light);
    font-size: 14px;
    margin-bottom: 16px;
}

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

.tab-item {
    display: inline-block;
    padding: 6px 12px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-text);
}

/* ===================================
   Solutions Section
   =================================== */

.solutions-section {
    background: var(--color-bg) !important;
}

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

.solution-card {
    background: var(--color-card);
    padding: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.solution-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--color-card) 0%, var(--color-bg-alt) 100%);
    border-color: var(--color-secondary-dark);
}

.solution-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.solution-icon i {
    font-size: 24px;
    color: white;
}

.solution-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.solution-card p {
    color: var(--color-text-light);
    line-height: 1.7;
    margin: 0;
}

/* ===================================
   Impact Section
   =================================== */

.impact-section {
    background: var(--color-dark-surface-alt) !important;
    padding: 100px 0;
}

.impact-section .section-header {
    color: white;
}

.impact-section .section-label {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.impact-section .section-header h2 {
    color: white;
}

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

.metric-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px 32px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: var(--transition);
}

.metric-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.metric-value {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 8px;
    line-height: 1;
}

.metric-label {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 16px;
}

.metric-detail {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
    margin: 0;
}

/* ===================================
   Responsive Adjustments
   =================================== */

@media (max-width: 768px) {
    .case-hero {
        padding: 48px 0 72px;
    }

    .case-hero h1 {
        font-size: 2.5rem;
        letter-spacing: -1px;
    }

    .hero-tagline {
        font-size: 1.2rem;
    }

    .hero-details {
        gap: 24px;
    }

    .case-section {
        padding: 72px 0;
    }

    .problem-number {
        font-size: 36px;
    }

    .personas-grid {
        grid-template-columns: 1fr;
    }

    .phase-timeline {
        flex-direction: column;
        align-items: center;
    }

    .phase-item {
        max-width: 100%;
    }

    .phase-item:not(:last-child)::after {
        display: none;
    }

    .ia-structure {
        grid-template-columns: 1fr;
    }

    .solution-card.featured {
        grid-column: span 1;
    }

    .metric-value {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .breadcrumb-section {
        padding: 90px 0 16px;
    }

    .hero-meta {
        flex-direction: column;
        gap: 8px;
    }

    .detail-item {
        text-align: center;
    }

    .principle-highlight {
        flex-direction: column;
        text-align: center;
    }

    .findings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 425px) {
    .case-hero {
        padding: 56px 0 80px;
    }

    .case-section {
        padding: 84px 0;
    }

    .problem-card,
    .persona-card,
    .finding-card,
    .ia-card,
    .solution-card,
    .metric-card {
        padding: 28px;
    }
}

@media (max-width: 575px) {
    .case-hero {
        padding: 56px 0 80px;
    }

    .case-section {
        padding: 84px 0;
    }

    .problem-card,
    .persona-card,
    .finding-card,
    .ia-card,
    .solution-card,
    .metric-card {
        padding: 28px;
    }
}