/* Cases Page Styles */

/* ===== 1. CASES HERO (좌측 정렬 큰 헤드라인) ===== */
.cases-hero {
    position: relative;
    background: var(--white);
    padding: calc(var(--spacing-4xl) + 100px) 0 var(--spacing-4xl);
    overflow: hidden;
    border-bottom: 1px solid var(--gray-100);
}

.cases-hero::before {
    content: '';
    position: absolute;
    top: -150px;
    right: -150px;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(49, 130, 206, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

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

.cases-hero__eyebrow {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--accent);
    margin-bottom: var(--spacing-lg);
}

.cases-hero__title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    color: var(--gray-800);
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.cases-hero__desc {
    font-size: var(--font-size-base);
    color: var(--gray-500);
    line-height: 1.7;
    text-align: left;
    max-width: 700px;
}

.cases-hero__scroll {
    text-align: center;
    color: var(--gray-400);
    font-size: var(--font-size-xs);
    letter-spacing: 0.25em;
    margin-top: var(--spacing-2xl);
    animation: casesScroll 2s ease-in-out infinite;
}

@keyframes casesScroll {
    0%, 100% { transform: translateY(0); opacity: 0.4; }
    50% { transform: translateY(6px); opacity: 1; }
}

/* ===== 2. CASES SECTION ===== */
.cases-section {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
}

.filter-tabs__btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-600);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-tabs__btn:hover,
.filter-tabs__btn.active {
    color: var(--white);
    background: var(--primary);
    border-color: var(--primary);
}

/* Cases Grid (블로그 포스트 스타일 카드) */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

/* Thumb (사진 영역에 큰 텍스트 라벨) */
.case-card__thumb {
    aspect-ratio: 5/3;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.case-card__thumb::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
}

.case-card__thumb::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -25%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
}

.case-card__thumb--primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.case-card__thumb--navy {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: var(--white);
}

.case-card__thumb--accent {
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.case-card__thumb--light {
    background: linear-gradient(135deg, #b8d4f0 0%, #7eaee5 100%);
    color: var(--primary-dark);
}

.case-card__thumb-tagline {
    position: relative;
    z-index: 1;
    font-size: var(--font-size-xl);
    font-weight: 800;
    line-height: 1.4;
    text-align: center;
    letter-spacing: -0.02em;
}

/* Body */
.case-card__body {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.case-card__tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--accent);
    background: rgba(49, 130, 206, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
}

.case-card__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.case-card__desc {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

.case-card__result {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--primary);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-100);
}

/* ===== 3. FINAL CTA ===== */
.cases-final-cta {
    padding: var(--spacing-4xl) 0;
    background: var(--primary);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cases-final-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, var(--primary-light) 0%, var(--primary) 70%);
}

.cases-final-cta .container {
    position: relative;
    z-index: 1;
}

.cases-final-cta__title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--white);
    line-height: 1.25;
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-md);
}

.cases-final-cta__subtitle {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: var(--spacing-2xl);
}

.cases-final-cta__btns {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cases-final-cta__btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.cases-final-cta__btn--primary {
    background: var(--gray-900);
    color: var(--white);
}

.cases-final-cta__btn--primary:hover {
    transform: translateY(-2px);
    background: var(--white);
    color: var(--primary);
}

.cases-final-cta__btn--secondary {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.cases-final-cta__btn--secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cases-hero__title,
    .cases-final-cta__title {
        font-size: var(--font-size-4xl);
    }

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

    .filter-tabs {
        gap: 6px;
    }

    .filter-tabs__btn {
        font-size: var(--font-size-xs);
        padding: 6px 14px;
    }

    .cases-final-cta__btns {
        flex-direction: column;
    }

    .cases-final-cta__btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .cases-hero__title { font-size: var(--font-size-3xl); }
    .case-card__thumb-tagline { font-size: var(--font-size-lg); }
    .case-card__body { padding: var(--spacing-lg); }
    .case-card__title { font-size: var(--font-size-base); }
}