/* ====================================
   GROWTH HACKING PRIVATE LIMITED
   Case Studies Page Styles
   ==================================== */

/* ====================================
   HERO SECTION
   ==================================== */
.cs-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-16);
    overflow: hidden;
    min-height: 420px;
    display: flex;
    align-items: center;
}

.cs-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.cs-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.7;
    animation: csOrbFloat 12s ease-in-out infinite;
}

.cs-hero-orb--1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(99,102,241,0.45), transparent 70%);
    top: -20%; left: -10%;
}

.cs-hero-orb--2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(34,211,238,0.35), transparent 70%);
    bottom: -15%; right: -5%;
    animation-delay: -5s;
}

@keyframes csOrbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -15px) scale(1.05); }
    66% { transform: translate(-15px, 10px) scale(0.95); }
}

.cs-hero-mesh {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.cs-hero .container {
    position: relative;
    z-index: 1;
}

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

.cs-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-8);
    animation: csFadeDown 0.6s ease;
}

.cs-hero-tag-dot {
    width: 8px; height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: csPulseDot 2s ease-in-out infinite;
}

@keyframes csPulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.7); }
}

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

.cs-hero-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: var(--space-6);
    animation: csFadeUp 0.6s ease 0.1s both;
}

.cs-hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-8);
    animation: csFadeUp 0.6s ease 0.2s both;
    text-shadow: 0 0 20px rgba(99, 102, 241, 0.2), 0 0 40px rgba(139, 92, 246, 0.1);
}

.cs-hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    animation: csFadeUp 0.6s ease 0.3s both;
}

.cs-hero-stat {
    text-align: center;
}

.cs-hero-stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
}

.cs-hero-stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.12);
}

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

/* ====================================
   FILTER TABS
   ==================================== */
.cs-filter-section {
    padding: var(--space-10) 0 var(--space-6);
    position: sticky;
    top: var(--header-height);
    z-index: 50;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-dark-border);
}

.cs-filters {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
}

.cs-filter-btn {
    padding: var(--space-2) var(--space-5);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    font-family: var(--font-base);
    cursor: pointer;
    transition: all var(--transition-base);
}

.cs-filter-btn:hover {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
    color: var(--color-text-primary);
}

.cs-filter-btn.active {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--color-primary-light);
}

/* ====================================
   CASE STUDIES GRID
   ==================================== */
.cs-grid-section {
    padding: var(--space-16) 0 var(--space-20);
}

.cs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.cs-card {
    background: rgba(26, 26, 36, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

a.cs-card {
    display: flex;
}

a.cs-card:visited {
    color: inherit;
}

.cs-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(99, 102, 241, 0.08);
}

.cs-card:hover .cs-card-image img {
    transform: scale(1.05);
}

.cs-card-image {
    height: 260px;
    overflow: hidden;
    position: relative;
}

.cs-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.cs-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(18, 18, 26, 0.9), transparent);
}

.cs-card-category {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 2;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cs-card-category.cat-marketing {
    background: rgba(99,102,241,0.2);
    color: #818cf8;
    border: 1px solid rgba(99,102,241,0.3);
}

.cs-card-category.cat-staffing {
    background: rgba(139,92,246,0.2);
    color: #c084fc;
    border: 1px solid rgba(139,92,246,0.3);
}

.cs-card-category.cat-technology {
    background: rgba(6,182,212,0.2);
    color: #22d3ee;
    border: 1px solid rgba(6,182,212,0.3);
}

.cs-card-stat-overlay {
    position: absolute;
    bottom: var(--space-4);
    right: var(--space-4);
    z-index: 2;
    display: flex;
    gap: var(--space-3);
}

.cs-card-stat-chip {
    padding: var(--space-1) var(--space-3);
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-primary);
}

.cs-card-body {
    padding: var(--space-6) var(--space-6) var(--space-8);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cs-card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
    line-height: 1.3;
}

.cs-card-excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.6;
    flex: 1;
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.08);
}

.cs-card-metrics {
    display: flex;
    gap: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-dark-border);
}

.cs-card-metric {
    text-align: left;
}

.cs-card-metric-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary-light);
    line-height: 1.2;
}

.cs-card-metric-label {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    text-shadow: 0 0 8px rgba(99, 102, 241, 0.1);
}

.cs-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary-light);
    margin-top: var(--space-4);
    transition: gap var(--transition-base);
}

.cs-card:hover .cs-card-link {
    gap: var(--space-3);
}

/* Featured card (full-width) */
.cs-card.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
}

.cs-card.featured .cs-card-image {
    height: 100%;
    min-height: 350px;
}

.cs-card.featured .cs-card-body {
    padding: var(--space-10);
    justify-content: center;
}

.cs-card.featured .cs-card-title {
    font-size: var(--text-2xl);
}

/* ====================================
   CTA SECTION
   ==================================== */
.cs-cta-section {
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
}

.cs-cta-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.cs-cta-bg .orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
}

.cs-cta-bg .orb--1 {
    width: 400px; height: 400px;
    background: rgba(99,102,241,0.4);
    top: -30%; right: 10%;
    animation: csOrbFloat 15s ease-in-out infinite;
}

.cs-cta-bg .orb--2 {
    width: 300px; height: 300px;
    background: rgba(139,92,246,0.35);
    bottom: -20%; left: 5%;
    animation: csOrbFloat 12s ease-in-out infinite reverse;
}

.cs-cta-container {
    position: relative;
    z-index: 1;
    background: rgba(26, 26, 36, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-16);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cs-cta-container h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-6);
}

.cs-cta-container > p {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.cs-cta-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* ====================================
   RESPONSIVE
   ==================================== */
@media (max-width: 1024px) {
    .cs-card.featured {
        grid-template-columns: 1fr;
    }
    
    .cs-card.featured .cs-card-image {
        min-height: 260px;
    }
}

@media (max-width: 768px) {
    .cs-hero {
        padding: calc(var(--header-height) + var(--space-12)) 0 var(--space-10);
        min-height: auto;
    }

    .cs-hero-title {
        font-size: var(--text-3xl);
    }

    .cs-hero-stats {
        gap: var(--space-6);
    }

    .cs-hero-stat-value {
        font-size: var(--text-2xl);
    }

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

    .cs-card.featured {
        grid-column: 1;
    }

    .cs-cta-container {
        padding: var(--space-10);
    }

    .cs-filter-section {
        padding: var(--space-6) 0 var(--space-4);
    }
}

@media (max-width: 480px) {
    .cs-hero-title {
        font-size: var(--text-2xl);
    }

    .cs-hero-stats {
        flex-direction: column;
        gap: var(--space-4);
    }

    .cs-cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* ====================================
   REDUCED MOTION
   ==================================== */
@media (prefers-reduced-motion: reduce) {
    .cs-hero-orb,
    .cs-cta-bg .orb {
        animation: none;
    }
    
    .cs-hero-tag,
    .cs-hero-title,
    .cs-hero-description,
    .cs-hero-stats {
        animation: none;
        opacity: 1;
        transform: none;
    }
}