/* ==========================================
   VV Techsol - Case Study Detail Pages
   Following EurosHub project detail layout
   ========================================== */

/* Case Study Hero */
.case-study-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 80px 0 80px;
    overflow: hidden;
    background: var(--bg-primary);
}

.case-study-hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(23, 182, 178, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.case-study-hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(164, 47, 116, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.case-study-hero .container {
    position: relative;
    z-index: 2;
}

.case-study-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.case-study-hero-content {
    max-width: 600px;
}

.case-study-category {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(23, 182, 178, 0.12);
    border: 1px solid rgba(23, 182, 178, 0.25);
    border-radius: var(--radius-full);
    color: var(--accent-teal);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.case-study-category i {
    font-size: 0.75rem;
}

.case-study-hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.case-study-hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.case-study-hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.case-study-hero-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.5s ease;
}

.case-study-hero-image:hover {
    transform: perspective(1000px) rotateY(0deg);
}

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

.case-study-hero-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(10, 10, 15, 0.6) 100%);
    pointer-events: none;
}

/* Project Overview */
.case-study-overview {
    padding: 80px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

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

.overview-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s ease;
}

.overview-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(23, 182, 178, 0.2);
    transform: translateY(-4px);
}

.overview-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.overview-label i {
    color: var(--accent-teal);
}

.overview-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Content Sections */
.case-study-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

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

.case-study-section-header {
    max-width: 800px;
    margin-bottom: 48px;
}

.case-study-section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent-teal);
    margin-bottom: 16px;
}

.case-study-section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
}

.case-study-content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.case-study-text p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.case-study-text ul {
    list-style: none;
    margin-top: 24px;
}

.case-study-text li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.case-study-text li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    width: 22px;
    height: 22px;
    background: rgba(23, 182, 178, 0.15);
    color: var(--accent-teal);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
}

.case-study-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.case-study-image img {
    width: 100%;
    height: auto;
}

.case-study-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    pointer-events: none;
}

/* Results & Impact */
.case-study-results {
    padding: 100px 0;
    background: var(--bg-primary);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.result-card:hover {
    transform: translateY(-6px);
    border-color: rgba(23, 182, 178, 0.25);
    box-shadow: var(--shadow-glow);
}

.result-number {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.result-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Technologies */
.case-study-tech {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.tech-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: var(--bg-card-hover);
    border-color: rgba(23, 182, 178, 0.3);
    transform: translateY(-3px);
}

.tech-item i {
    font-size: 1.1rem;
    color: var(--accent-teal);
}

.tech-item img {
    width: 22px;
    height: 22px;
    object-fit: contain;
}

/* Next Steps CTA */
.case-study-next {
    padding: 100px 0;
    background: var(--bg-primary);
}

.next-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 60px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.next-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(23, 182, 178, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.next-content h3 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.next-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 500px;
}

.next-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* FAQ */
.case-study-faq {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(23, 182, 178, 0.2);
}

.faq-question {
    width: 100%;
    padding: 24px 28px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 700;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: var(--accent-teal);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--accent-teal);
    font-size: 0.9rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 28px 24px;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* Final CTA */
.case-study-final {
    padding: 120px 0;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.case-study-final::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(23, 182, 178, 0.08) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.case-study-final-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.case-study-final h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.case-study-final h2 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-study-final p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Breadcrumb */
.case-study-breadcrumb {
    padding: 100px 0 20px;
    background: var(--bg-primary);
}

.case-study-breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.case-study-breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.case-study-breadcrumb a:hover {
    color: var(--accent-teal);
}

.case-study-breadcrumb i {
    font-size: 0.75rem;
}

/* Navigation back link */
.case-study-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 24px;
    transition: color 0.3s ease;
}

.case-study-back:hover {
    color: var(--accent-teal);
}

/* Responsive */
@media (max-width: 1024px) {
    .case-study-hero-grid,
    .case-study-content-grid,
    .next-box {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .case-study-hero-image {
        transform: none;
        max-width: 700px;
        margin: 0 auto;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .case-study-overview-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .next-actions {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .case-study-breadcrumb {
        padding: 90px 0 16px;
    }

    .case-study-hero {
        padding: 60px 0 60px;
        min-height: auto;
    }

    .case-study-hero-actions {
        flex-direction: column;
    }

    .case-study-hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .case-study-overview-grid,
    .results-grid {
        grid-template-columns: 1fr;
    }

    .next-box {
        padding: 36px 28px;
    }

    .next-actions {
        flex-direction: column;
    }

    .next-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .case-study-section {
        padding: 70px 0;
    }

    .overview-card,
    .result-card {
        padding: 24px;
    }
}