/* ====================================
   GROWTH HACKING PRIVATE LIMITED
   Case Study Detail Page Styles
   ==================================== */

/* ====================================
   LOADING STATE
   ==================================== */
.csd-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: var(--space-4);
    color: var(--color-text-secondary);
}

.csd-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: csdSpin 0.8s linear infinite;
}

@keyframes csdSpin {
    to { transform: rotate(360deg); }
}

/* ====================================
   HERO SECTION
   ==================================== */
.csd-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-12);
    overflow: hidden;
}

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

.csd-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: csdOrbFloat 14s ease-in-out infinite;
}

.csd-hero-orb--1 {
    width: 450px; height: 450px;
    background: radial-gradient(circle, rgba(99,102,241,0.4), transparent 70%);
    top: -15%; left: -8%;
}

.csd-hero-orb--2 {
    width: 350px; height: 350px;
    background: radial-gradient(circle, rgba(34,211,238,0.3), transparent 70%);
    bottom: -10%; right: -5%;
    animation-delay: -6s;
}

@keyframes csdOrbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(15px, -10px) scale(1.04); }
    66% { transform: translate(-10px, 8px) scale(0.96); }
}

.csd-hero-mesh {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.04) 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%);
}

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

.csd-hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.csd-back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    margin-bottom: var(--space-6);
    transition: all var(--transition-base);
}

.csd-back-link:hover {
    color: var(--color-primary-light);
    transform: translateX(-4px);
}

.csd-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    border: 1px solid;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-6);
    animation: csdFadeDown 0.6s ease both;
}

.csd-hero-tag-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    animation: csdPulseDot 2s ease-in-out infinite;
}

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

@keyframes csdFadeDown {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

.csd-hero-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    animation: csdFadeUp 0.6s ease 0.1s both;
}

.csd-hero-excerpt {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-8);
    line-height: 1.7;
    animation: csdFadeUp 0.6s ease 0.2s both;
}

.csd-hero-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
    animation: csdFadeUp 0.6s ease 0.3s both;
}

.csd-meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.csd-meta-label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.csd-meta-value {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.csd-meta-divider {
    width: 1px;
    height: 32px;
    background: var(--color-dark-border);
}

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

/* ====================================
   HERO IMAGE
   ==================================== */
.csd-hero-image-section {
    padding: 0 0 var(--space-12);
}

.csd-hero-image-wrapper {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--color-dark-border);
    box-shadow: 0 25px 60px rgba(0,0,0,0.5), 0 0 40px rgba(99,102,241,0.08);
    animation: csdImageReveal 0.8s ease 0.4s both;
}

@keyframes csdImageReveal {
    from { opacity: 0; transform: translateY(30px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.csd-hero-image {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
    display: block;
}

.csd-hero-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(12,12,20,0.6) 0%, transparent 40%);
    pointer-events: none;
}

.csd-hero-chips {
    position: absolute;
    bottom: var(--space-6);
    left: var(--space-6);
    display: flex;
    gap: var(--space-3);
    z-index: 2;
}

.csd-chip {
    padding: var(--space-2) var(--space-4);
    background: rgba(12, 12, 20, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

/* ====================================
   RESULTS BANNER
   ==================================== */
.csd-results-banner {
    padding: var(--space-12) 0;
    background: rgba(26, 26, 36, 0.4);
    border-top: 1px solid var(--color-dark-border);
    border-bottom: 1px solid var(--color-dark-border);
}

.csd-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-6);
    max-width: 1100px;
    margin: 0 auto;
}

.csd-result-card {
    text-align: center;
    padding: var(--space-6);
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.csd-result-card.csd-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.csd-result-card:nth-child(2).csd-visible { transition-delay: 0.05s; }
.csd-result-card:nth-child(3).csd-visible { transition-delay: 0.1s; }
.csd-result-card:nth-child(4).csd-visible { transition-delay: 0.15s; }
.csd-result-card:nth-child(5).csd-visible { transition-delay: 0.2s; }
.csd-result-card:nth-child(6).csd-visible { transition-delay: 0.25s; }

.csd-result-card:hover {
    border-color: rgba(99,102,241,0.25);
    background: rgba(99,102,241,0.04);
    transform: translateY(-4px);
}

.csd-result-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-primary-light);
    line-height: 1.2;
    margin-bottom: var(--space-1);
}

.csd-result-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.csd-result-detail {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    line-height: 1.5;
}

/* ====================================
   SECTIONS
   ==================================== */
.csd-section {
    padding: var(--space-16) 0;
}

.csd-section--alt {
    background: rgba(26, 26, 36, 0.25);
}

.csd-content-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.csd-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.csd-section-number {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.csd-section-title {
    font-size: var(--text-2xl);
    font-weight: 700;
}

/* ====================================
   OVERVIEW
   ==================================== */
.csd-overview-text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 850px;
}

/* ====================================
   CHALLENGES
   ==================================== */
.csd-challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4);
}

.csd-challenge-item {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-5);
    background: rgba(255,70,70,0.03);
    border: 1px solid rgba(255,70,70,0.12);
    border-radius: var(--radius-lg);
    opacity: 0;
    transform: translateX(-15px);
    transition: all var(--transition-base);
}

.csd-challenge-item.csd-visible {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.csd-challenge-item:nth-child(2).csd-visible { transition-delay: 0.06s; }
.csd-challenge-item:nth-child(3).csd-visible { transition-delay: 0.12s; }
.csd-challenge-item:nth-child(4).csd-visible { transition-delay: 0.18s; }
.csd-challenge-item:nth-child(5).csd-visible { transition-delay: 0.24s; }
.csd-challenge-item:nth-child(6).csd-visible { transition-delay: 0.3s; }

.csd-challenge-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.csd-challenge-item p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ====================================
   SOLUTION
   ==================================== */
.csd-solution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.csd-solution-card {
    padding: var(--space-8);
    background: rgba(26, 26, 36, 0.6);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.csd-solution-card.csd-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.csd-solution-card:nth-child(2).csd-visible { transition-delay: 0.1s; }
.csd-solution-card:nth-child(3).csd-visible { transition-delay: 0.2s; }
.csd-solution-card:nth-child(4).csd-visible { transition-delay: 0.3s; }

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

.csd-solution-card:hover {
    border-color: rgba(99,102,241,0.2);
    transform: translateY(-4px);
}

.csd-solution-card:hover::before {
    opacity: 1;
}

.csd-solution-index {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: rgba(99,102,241,0.12);
    position: absolute;
    top: var(--space-4);
    right: var(--space-6);
    line-height: 1;
}

.csd-solution-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.csd-solution-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ====================================
   TIMELINE
   ==================================== */
.csd-timeline {
    position: relative;
    padding-left: var(--space-2);
}

.csd-timeline-item {
    display: flex;
    gap: var(--space-6);
    padding-bottom: var(--space-8);
    opacity: 0;
    transform: translateY(15px);
}

.csd-timeline-item.csd-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.csd-timeline-item:nth-child(2).csd-visible { transition-delay: 0.08s; }
.csd-timeline-item:nth-child(3).csd-visible { transition-delay: 0.16s; }
.csd-timeline-item:nth-child(4).csd-visible { transition-delay: 0.24s; }
.csd-timeline-item:nth-child(5).csd-visible { transition-delay: 0.32s; }
.csd-timeline-item:nth-child(6).csd-visible { transition-delay: 0.4s; }

.csd-timeline-item--last {
    padding-bottom: 0;
}

.csd-timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    width: 20px;
}

.csd-timeline-dot {
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(99,102,241,0.4);
    flex-shrink: 0;
    margin-top: 4px;
}

.csd-timeline-item--last .csd-timeline-dot {
    background: var(--gradient-primary);
    box-shadow: 0 0 20px rgba(99,102,241,0.6);
}

.csd-timeline-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, var(--color-primary), rgba(99,102,241,0.15));
    margin-top: var(--space-2);
}

.csd-timeline-content {
    flex: 1;
    padding-bottom: var(--space-2);
}

.csd-timeline-period {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-2);
    background: rgba(99,102,241,0.08);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.csd-timeline-title {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.csd-timeline-desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ====================================
   CHARTS
   ==================================== */
.csd-charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.csd-chart-card {
    background: rgba(26, 26, 36, 0.6);
    border: 1px solid var(--color-dark-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    opacity: 0;
    transform: translateY(20px);
}

.csd-chart-card.csd-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.csd-chart-card:nth-child(2).csd-visible { transition-delay: 0.15s; }

.csd-chart-title {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-5);
    color: var(--color-text-primary);
}

.csd-chart-container {
    position: relative;
}

/* ====================================
   SERVICES TAGS
   ==================================== */
.csd-services-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.csd-service-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: rgba(255,255,255,0.02);
    border: 1px solid;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    opacity: 0;
    transform: scale(0.9);
}

.csd-service-tag.csd-visible {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.csd-service-tag:nth-child(2).csd-visible { transition-delay: 0.04s; }
.csd-service-tag:nth-child(3).csd-visible { transition-delay: 0.08s; }
.csd-service-tag:nth-child(4).csd-visible { transition-delay: 0.12s; }
.csd-service-tag:nth-child(5).csd-visible { transition-delay: 0.16s; }
.csd-service-tag:nth-child(6).csd-visible { transition-delay: 0.2s; }

.csd-service-check {
    font-weight: 700;
}

/* ====================================
   TESTIMONIAL
   ==================================== */
.csd-testimonial-section {
    padding: var(--space-16) 0;
}

.csd-testimonial-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-2xl);
    padding: var(--space-12);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
}

.csd-testimonial-card.csd-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.csd-testimonial-quote-mark {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 6rem;
    line-height: 1;
    color: rgba(99,102,241,0.12);
    position: absolute;
    top: var(--space-4);
    left: var(--space-8);
    user-select: none;
}

.csd-testimonial-text {
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-8);
    position: relative;
    z-index: 1;
}

.csd-testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.csd-testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: 700;
    flex-shrink: 0;
}

.csd-testimonial-name {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.csd-testimonial-role {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

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

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

.csd-cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.csd-cta-orb--1 {
    width: 350px; height: 350px;
    background: rgba(99,102,241,0.35);
    top: -25%; right: 10%;
    animation: csdOrbFloat 14s ease-in-out infinite;
}

.csd-cta-orb--2 {
    width: 280px; height: 280px;
    background: rgba(139,92,246,0.3);
    bottom: -20%; left: 5%;
    animation: csdOrbFloat 11s ease-in-out infinite reverse;
}

.csd-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;
}

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

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

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

/* ====================================
   RESPONSIVE
   ==================================== */
@media (max-width: 1024px) {
    .csd-solution-grid {
        grid-template-columns: 1fr;
    }

    .csd-charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .csd-hero {
        padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-8);
    }

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

    .csd-hero-meta {
        gap: var(--space-4);
    }

    .csd-meta-divider {
        display: none;
    }

    .csd-hero-meta {
        justify-content: center;
    }

    .csd-meta-item {
        text-align: center;
    }

    .csd-hero-image {
        max-height: 300px;
    }

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

    .csd-challenge-grid {
        grid-template-columns: 1fr;
    }

    .csd-section {
        padding: var(--space-10) 0;
    }

    .csd-section-header {
        margin-bottom: var(--space-6);
    }

    .csd-testimonial-card {
        padding: var(--space-8);
    }

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

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

    .csd-results-grid {
        grid-template-columns: 1fr;
    }

    .csd-result-value {
        font-size: var(--text-2xl);
    }

    .csd-hero-chips {
        gap: var(--space-2);
    }

    .csd-chip {
        font-size: var(--text-xs);
        padding: var(--space-1) var(--space-3);
    }

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

/* ====================================
   REDUCED MOTION
   ==================================== */
@media (prefers-reduced-motion: reduce) {
    .csd-hero-orb,
    .csd-cta-orb {
        animation: none;
    }

    .csd-hero-tag,
    .csd-hero-title,
    .csd-hero-excerpt {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .csd-hero-image-wrapper {
        animation: none;
        opacity: 1;
        transform: none;
    }

    .csd-result-card,
    .csd-challenge-item,
    .csd-solution-card,
    .csd-timeline-item,
    .csd-chart-card,
    .csd-service-tag,
    .csd-testimonial-card {
        opacity: 1;
        transform: none;
    }
}