/* =========================================================
   Cases Page Styles - AdQuecto Ultimate Website v5.0
   事例紹介ページ専用スタイル
   ========================================================= */

/* ----------------------------------------
   Page Hero - Cases
   ---------------------------------------- */
.cases-hero {
    position: relative;
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 1.25rem 4rem;
    background: linear-gradient(135deg, var(--color-primary-deep) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
    overflow: hidden;
}

.cases-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.08) 1px, transparent 0);
    background-size: 40px 40px;
    pointer-events: none;
}

.cases-hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--content-width);
    margin: 0 auto;
    width: 100%;
    text-align: center;
}

.cases-hero-title {
    font-size: clamp(1.75rem, 6vw, 3rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.cases-hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
}

/* ----------------------------------------
   Results Highlight Section
   ---------------------------------------- */
.results-highlight {
    padding: var(--section-padding-mobile);
    background: var(--color-bg-white);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    max-width: var(--content-width);
    margin: 0 auto;
}

.result-card {
    background: linear-gradient(135deg, var(--color-primary-deep), var(--color-primary));
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    color: #fff;
}

.result-value {
    font-family: var(--font-en);
    font-size: clamp(2rem, 6vw, 2.5rem);
    font-weight: 700;
    color: var(--color-accent-gold);
    margin-bottom: 0.25rem;
}

.result-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

/* ----------------------------------------
   Case Studies Section
   ---------------------------------------- */
.case-studies {
    padding: var(--section-padding-mobile);
    background: var(--color-bg-secondary);
}

.case-studies-container {
    max-width: var(--content-width);
    margin: 0 auto;
}

.case-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.case-list {
    display: grid;
    gap: 2rem;
}

/* Case Card */
.case-card {
    background: #fff;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.case-header {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1.5rem 1.5rem 0;
}

.case-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.case-tag.industry {
    background: var(--color-bg-light-blue);
    color: var(--color-primary);
}

.case-tag.service {
    background: var(--color-accent-gold-light);
    color: var(--color-primary-deep);
}

.case-body {
    padding: 1rem 1.5rem 1.5rem;
}

.case-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary-deep);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.case-challenge {
    margin-bottom: 1.5rem;
}

.case-challenge-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.case-challenge-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.case-results {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1.25rem;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: 1.25rem;
}

.case-result {
    text-align: center;
}

.case-result-value {
    font-family: var(--font-en);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-gold);
    line-height: 1.2;
}

.case-result-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}

.case-period {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

.case-period svg {
    width: 16px;
    height: 16px;
}

/* Case Detail Expanded (Optional) */
.case-detail {
    padding: 1.5rem;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.case-detail-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary-deep);
    margin-bottom: 0.75rem;
}

.case-detail-content {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ----------------------------------------
   Client Voice Section
   ---------------------------------------- */
.client-voice {
    padding: var(--section-padding-mobile);
    background: var(--color-bg-white);
}

.voice-container {
    max-width: var(--content-width);
    margin: 0 auto;
}

.voice-list {
    display: grid;
    gap: 1.5rem;
}

.voice-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    position: relative;
}

.voice-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    font-size: 4rem;
    font-family: var(--font-en);
    color: var(--color-accent-gold);
    opacity: 0.3;
    line-height: 1;
}

.voice-content {
    position: relative;
    z-index: 1;
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    padding-top: 1rem;
}

.voice-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.voice-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary-deep), var(--color-primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.voice-avatar svg {
    width: 24px;
    height: 24px;
}

.voice-info {
    flex: 1;
}

.voice-company {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-primary-deep);
}

.voice-position {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

/* ----------------------------------------
   Cases CTA Section
   ---------------------------------------- */
.cases-cta {
    padding: var(--section-padding-mobile);
    background: linear-gradient(135deg, var(--color-primary-deep) 0%, var(--color-primary) 100%);
    position: relative;
    overflow: hidden;
}

.cases-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(201, 162, 39, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.cases-cta-content {
    position: relative;
    z-index: 1;
    max-width: var(--content-width-narrow);
    margin: 0 auto;
    text-align: center;
}

.cases-cta-title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
}

.cases-cta-desc {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 2rem;
}

/* ----------------------------------------
   Tablet Styles (768px+)
   ---------------------------------------- */
@media (min-width: 768px) {
    .cases-hero {
        min-height: 45vh;
        padding: 10rem 2rem 5rem;
    }
    
    .results-highlight {
        padding: var(--section-padding-tablet);
    }
    
    .results-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .case-studies {
        padding: var(--section-padding-tablet);
    }
    
    .case-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .client-voice {
        padding: var(--section-padding-tablet);
    }
    
    .voice-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-cta {
        padding: var(--section-padding-tablet);
    }
}

/* ----------------------------------------
   Desktop Styles (1024px+)
   ---------------------------------------- */
@media (min-width: 1024px) {
    .cases-hero {
        min-height: 50vh;
        padding: 12rem 2rem 6rem;
    }
    
    .results-highlight {
        padding: var(--section-padding-desktop);
    }
    
    .result-card {
        padding: 2rem;
    }
    
    .case-studies {
        padding: var(--section-padding-desktop);
    }
    
    .client-voice {
        padding: var(--section-padding-desktop);
    }
    
    .voice-card {
        padding: 2.5rem;
    }
    
    .cases-cta {
        padding: var(--section-padding-desktop);
    }
}

/* ----------------------------------------
   Animations
   ---------------------------------------- */
.cases-hero-title,
.cases-hero-subtitle {
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) forwards;
}

.cases-hero-subtitle {
    animation-delay: 0.2s;
}

.result-card,
.case-card,
.voice-card {
    opacity: 0;
    transform: translateY(20px);
}

.result-card.animate-in,
.case-card.animate-in,
.voice-card.animate-in {
    animation: fadeInUp 0.6s var(--ease-out) forwards;
}