/* ===== About Us Page Styles ===== */

/* スクリーンリーダー専用テキスト */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== ヒーローセクション ===== */
.hero-section {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.hero-content {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 62, 94, 0.8) 0%,
        rgba(0, 90, 158, 0.6) 50%,
        rgba(128, 192, 255, 0.4) 100%
    );
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.hero-text-container {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 60px 20px;
    z-index: 3;
}

.hero-title {
    margin: 0 0 24px 0;
    line-height: 1.2;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    transition: var(--transition);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(0, 62, 94, 0.8) 0%,
        rgba(0, 90, 158, 0.6) 50%,
        rgba(128, 192, 255, 0.4) 100%
    );
    z-index: 2;
}

.hero-title-main {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 12px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.02em;
    animation: slideInUp 1s ease-out;
}

.hero-title-sub {
    display: block;
    font-size: clamp(1rem, 2vw, 1.5rem);
    font-weight: 300;
    opacity: 0.9;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
    animation: slideInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin: 0;
    opacity: 0.95;
    line-height: 1.8;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
    animation: slideInUp 1s ease-out 0.4s both;
}

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

/* ===== Mission, Vision, Value セクション ===== */
.mission-vision-value {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--background-light) 0%, var(--background-color) 100%);
    position: relative;
}

.mission-vision-value::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--border-color) 50%, transparent 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.mvv-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-xl);
    background: var(--background-color);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.mvv-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    transition: var(--transition);
}

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

.mvv-card:focus-within {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* カード別のアクセントカラー */
.mission-card::before {
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.vision-card::before {
    background: linear-gradient(180deg, var(--secondary-color) 0%, var(--accent-color) 100%);
}

.value-card::before {
    background: linear-gradient(180deg, var(--accent-color) 0%, var(--primary-color) 100%);
}

/* アイコン */
.mvv-icon {
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.icon-circle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    opacity: 0.1;
    transition: var(--transition);
}

.mission-icon {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.vision-icon {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
}

.value-icon {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
}

.icon-text {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.mvv-card:hover .icon-circle {
    transform: scale(1.1);
}

/* コンテンツ */
.mvv-content {
    flex: 1;
    min-width: 0;
}

.mvv-category {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 0 var(--spacing-sm) 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mvv-title {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.4;
}

.mvv-description {
    font-size: var(--font-size-base);
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

/* ===== Value画像スタイル ===== */
.value-image-container {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    width: 100%;
    box-sizing: border-box;
}

.value-image {
    max-width: 50%;
    height: auto;
    border: none;
    border-radius: 0;
    box-shadow: none;
    transition: var(--transition);
    display: block;
    margin: 0 auto;
}

.value-image:hover {
    transform: scale(1.02);
    opacity: 0.95;
}

/* ===== アニメーション ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* フェードインアニメーション */
.fade-in-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== レスポンシブデザイン ===== */
@media (max-width: 768px) {
    .hero-section {
        min-height: 400px;
    }

    .hero-title {
        font-size: clamp(2rem, 6vw, 3rem);
    }

    .hero-subtitle {
        font-size: clamp(1rem, 3vw, 1.2rem);
    }

    .mission-vision-value {
        padding: var(--spacing-xl) 0;
    }

    .mvv-card {
        flex-direction: column;
        text-align: left;
        gap: var(--spacing-md);
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-xl);
    }

    .mvv-icon {
        align-self: center;
        margin-top: 0;
    }

    .icon-circle {
        width: 60px;
        height: 60px;
    }

    .icon-text {
        font-size: 1.5rem;
    }

    .mvv-title {
        font-size: clamp(1.2rem, 4vw, 1.5rem);
    }

    .mvv-description {
        font-size: var(--font-size-small);
    }

    .breadcrumb-list {
        padding: 0 var(--spacing-sm);
    }

    .value-image-container {
        padding: var(--spacing-sm);
    }

    .value-image {
        max-width: 95%;
    }
}

@media (max-width: 480px) {
    .hero-section {
        min-height: 350px;
    }

    .mvv-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .value-image-container {
        padding: var(--spacing-xs);
        margin-top: var(--spacing-md);
    }

    .value-image {
        max-width: 100%;
    }
}

@media (max-width: 360px) {
    .value-image-container {
        padding: var(--spacing-xs);
    }

    .value-image {
        max-width: 100%;
    }
}

/* ===== 高コントラストモード対応 ===== */
@media (prefers-contrast: high) {
    .mvv-card {
        border: 2px solid var(--text-color);
    }

    .hero-overlay {
        background: rgba(0, 0, 0, 0.8);
    }

    .icon-circle {
        border: 2px solid white;
    }

    .value-image {
        border: 2px solid var(--text-color);
    }
}

/* ===== 動きを減らす設定 ===== */
@media (prefers-reduced-motion: reduce) {
    .hero-title,
    .hero-subtitle,
    .fade-in-element,
    .mvv-card,
    .icon-circle,
    .value-image {
        animation: none;
        transition: none;
    }

    .mvv-card:hover {
        transform: none;
    }

    .icon-circle:hover {
        transform: none;
    }

    .value-image:hover {
        transform: none;
    }
}

/* ===== フォーカス管理 ===== */
.mvv-card:focus-within .mvv-title {
    color: var(--secondary-color);
}

/* ===== プリント用スタイル ===== */
@media print {
    .hero-section {
        background: white;
        color: black;
        min-height: 200px;
    }

    .hero-overlay {
        display: none;
    }

    .hero-image {
        opacity: 0.1;
    }

    .mvv-card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
        margin-bottom: var(--spacing-md);
    }

    .icon-circle {
        background: #f0f0f0 !important;
        color: black !important;
    }

    .icon-text {
        color: black !important;
        text-shadow: none;
    }

    .value-image {
        max-width: 80%;
        margin: 0 auto;
        display: block;
    }
}