/* ========================================
   Component Utility Classes
   汎用的なコンポーネントクラス
   ======================================== */

/* Spacing Utilities */
.mt-1 { margin-top: calc(var(--spacing-unit) * 1); }
.mt-2 { margin-top: calc(var(--spacing-unit) * 2); }
.mt-3 { margin-top: calc(var(--spacing-unit) * 3); }
.mt-4 { margin-top: calc(var(--spacing-unit) * 4); }
.mb-1 { margin-bottom: calc(var(--spacing-unit) * 1); }
.mb-2 { margin-bottom: calc(var(--spacing-unit) * 2); }
.mb-3 { margin-bottom: calc(var(--spacing-unit) * 3); }
.mb-4 { margin-bottom: calc(var(--spacing-unit) * 4); }

.pt-1 { padding-top: calc(var(--spacing-unit) * 1); }
.pt-2 { padding-top: calc(var(--spacing-unit) * 2); }
.pt-3 { padding-top: calc(var(--spacing-unit) * 3); }
.pt-4 { padding-top: calc(var(--spacing-unit) * 4); }
.pb-1 { padding-bottom: calc(var(--spacing-unit) * 1); }
.pb-2 { padding-bottom: calc(var(--spacing-unit) * 2); }
.pb-3 { padding-bottom: calc(var(--spacing-unit) * 3); }
.pb-4 { padding-bottom: calc(var(--spacing-unit) * 4); }

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Container Sizes */
.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 2);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 2);
}

/* Feature Box */
.feature-box {
    padding: calc(var(--spacing-unit) * 3);
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.feature-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-box-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

/* Testimonial Card */
.testimonial-card {
    background: white;
    padding: calc(var(--spacing-unit) * 3);
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
}

.testimonial-quote {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--color-text);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.testimonial-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.testimonial-info p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Stats Box */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 3);
}

.stat-item {
    text-align: center;
    padding: calc(var(--spacing-unit) * 2);
}

.stat-number {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: calc(var(--spacing-unit) * 4);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(var(--spacing-unit) * -4);
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 4px solid white;
    box-shadow: 0 0 0 2px var(--color-border);
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.timeline-content h3 {
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    margin-bottom: calc(var(--spacing-unit) * 1);
    overflow: hidden;
}

.accordion-header {
    padding: calc(var(--spacing-unit) * 1.5);
    background: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background: var(--color-background-alt);
}

.accordion-title {
    font-weight: 600;
    margin: 0;
}

.accordion-icon {
    transition: transform 0.3s;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
    max-height: 500px;
}

.accordion-body {
    padding: calc(var(--spacing-unit) * 1.5);
    padding-top: 0;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
    background: var(--color-primary);
    color: white;
}

.badge-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.badge-success {
    background: #10b981;
}

.badge-warning {
    background: #f59e0b;
}

.badge-error {
    background: #ef4444;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-background-alt);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    transition: width 0.6s ease;
}

/* Image with Caption */
.image-wrapper {
    margin: calc(var(--spacing-unit) * 2) 0;
}

.image-wrapper img {
    width: 100%;
    border-radius: 12px;
    display: block;
}

.image-caption {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-top: calc(var(--spacing-unit) * 0.75);
}

/* Quote Highlight */
.quote-highlight {
    background: var(--color-background-alt);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    border-left: 4px solid var(--color-primary);
    margin: calc(var(--spacing-unit) * 2) 0;
}

.quote-highlight p {
    font-size: 1.125rem;
    font-style: italic;
    margin: 0;
}

/* Icon List */
.icon-list {
    list-style: none;
    padding: 0;
}

.icon-list li {
    display: flex;
    align-items: flex-start;
    gap: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.icon-list-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-weight: 700;
}

/* Split Content */
.split-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    align-items: center;
}

.split-content-reverse {
    direction: rtl;
}

.split-content-reverse > * {
    direction: ltr;
}

/* Hover Card Effect */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive Video */
.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
}

.video-wrapper iframe,
.video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}