/**
 * About Page Mobile Optimization
 *
 * Aboutページのモバイル専用スタイル
 * 可読性重視・プロフェッショナルなデザイン
 */

/* ==========================================================================
   Hero Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .about-hero {
        min-height: 70vh;
        padding: 80px 0 60px;
    }

    /* 背景エフェクト簡素化 */
    .hero-background::before {
        animation: none;
    }

    .hero-particles {
        animation: none;
        opacity: 0.3;
    }

    .hero-content {
        padding: 1.5rem 0;
    }

    .hero-catchphrase {
        font-size: 0.95rem;
        letter-spacing: 1.5px;
        margin-bottom: 1rem;
    }

    .hero-title {
        margin-bottom: 1.5rem;
    }

    .title-main {
        font-size: 2.25rem;
        letter-spacing: -0.5px;
        margin-bottom: 0.5rem;
    }

    .title-sub {
        font-size: 1.35rem;
    }

    .hero-description {
        font-size: 1rem;
        line-height: 1.85;
        margin: 0 auto 2rem;
        max-width: 100%;
        padding: 0 10px;
    }

    .hero-description br {
        display: none;
    }

    /* スクロールインジケーター */
    .hero-scroll {
        display: none;
    }

    /* ウェーブ */
    .hero-wave {
        height: 60px;
    }
}

@media (max-width: 480px) {
    .about-hero {
        min-height: 60vh;
        padding: 60px 0 50px;
    }

    .title-main {
        font-size: 1.85rem;
    }

    .title-sub {
        font-size: 1.15rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-wave {
        height: 40px;
    }
}

/* ==========================================================================
   CEO Message Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .ceo-message-section {
        padding: 60px 0;
    }

    .ceo-content {
        display: flex;
        flex-direction: column;
        gap: 2.5rem;
    }

    .ceo-image-wrapper {
        position: static;
        text-align: center;
    }

    .ceo-image {
        width: 180px;
        height: 180px;
        margin: 0 auto 1.5rem;
        border-width: 5px;
    }

    .image-placeholder {
        font-size: 4rem;
    }

    .ceo-info {
        text-align: center;
    }

    .ceo-role {
        font-size: 0.8rem;
        letter-spacing: 0.5px;
    }

    .ceo-name {
        font-size: 1.35rem;
    }

    .ceo-name-en {
        font-size: 0.9rem;
    }

    /* メッセージテキスト */
    .ceo-text {
        padding: 0;
    }

    .message-quote {
        font-size: 2.5rem;
        text-align: center;
        margin-bottom: 1.5rem;
    }

    .message-content {
        padding-left: 1rem;
        border-left-width: 3px;
    }

    .message-paragraph {
        font-size: 0.95rem;
        line-height: 1.9;
        margin-bottom: 1.25rem;
    }

    .message-paragraph br {
        display: none;
    }

    .message-signature {
        margin-top: 2rem;
        padding-top: 1.5rem;
        text-align: center;
    }

    .message-signature p {
        font-size: 0.875rem;
    }

    .signature-name {
        font-size: 1rem !important;
    }
}

@media (max-width: 480px) {
    .ceo-message-section {
        padding: 48px 0;
    }

    .ceo-image {
        width: 150px;
        height: 150px;
    }

    .image-placeholder {
        font-size: 3rem;
    }

    .ceo-name {
        font-size: 1.25rem;
    }

    .message-content {
        padding-left: 0.75rem;
    }

    .message-paragraph {
        font-size: 0.9rem;
    }
}

/* ==========================================================================
   Vision/Mission/Purpose Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .vision-mission-section {
        padding: 60px 0;
    }

    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .philosophy-card {
        padding: 2rem 1.5rem;
    }

    /* ホバー効果無効化 */
    .philosophy-card:hover {
        transform: none;
    }

    /* アクセントライン常時表示 */
    .philosophy-card::before {
        transform: scaleX(1);
    }

    .card-icon {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .card-title {
        margin-bottom: 1rem;
    }

    .title-en {
        font-size: 1.35rem;
    }

    .title-ja {
        font-size: 0.8rem;
    }

    .card-main-text {
        font-size: 1.1rem;
    }

    .card-sub-text {
        font-size: 0.9rem;
    }

    .card-description {
        font-size: 0.9rem;
        line-height: 1.75;
    }

    .card-description br {
        display: none;
    }
}

@media (max-width: 480px) {
    .vision-mission-section {
        padding: 48px 0;
    }

    .philosophy-card {
        padding: 1.5rem 1.25rem;
    }

    .card-icon {
        width: 56px;
        height: 56px;
        font-size: 1.35rem;
    }

    .title-en {
        font-size: 1.25rem;
    }

    .card-main-text {
        font-size: 1rem;
    }
}

/* ==========================================================================
   Three Harmonies Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .three-harmonies-section {
        padding: 60px 0;
    }

    .harmonies-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .harmony-card {
        padding: 2rem 1.5rem;
    }

    /* ホバー効果無効化 */
    .harmony-card:hover {
        transform: none;
    }

    .harmony-number {
        font-size: 2.5rem;
        top: 1rem;
        right: 1rem;
        opacity: 0.1;
    }

    .harmony-icon {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
        margin-bottom: 1.25rem;
    }

    .harmony-title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }

    .harmony-description {
        font-size: 0.9rem;
        line-height: 1.8;
        margin-bottom: 1.25rem;
    }

    .harmony-description br {
        display: none;
    }

    .harmony-features {
        padding-top: 0.5rem;
    }

    .harmony-features li {
        font-size: 0.875rem;
        padding: 0.4rem 0;
        gap: 0.5rem;
    }

    .harmony-features i {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .three-harmonies-section {
        padding: 48px 0;
    }

    .harmony-card {
        padding: 1.5rem 1.25rem;
    }

    .harmony-icon {
        width: 56px;
        height: 56px;
        font-size: 1.35rem;
    }

    .harmony-title {
        font-size: 1.15rem;
    }

    .harmony-description {
        font-size: 0.875rem;
    }
}

/* ==========================================================================
   Values Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .values-section {
        padding: 60px 0;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .value-card {
        padding: 2rem 1.5rem;
    }

    /* ホバー効果無効化 */
    .value-card:hover {
        transform: none;
    }

    .value-icon {
        width: 56px;
        height: 56px;
        font-size: 1.35rem;
        margin-bottom: 1rem;
    }

    .value-title {
        font-size: 1.25rem;
        margin-bottom: 0.5rem;
    }

    .value-subtitle {
        font-size: 0.9rem;
        margin-bottom: 0.75rem;
    }

    .value-description {
        font-size: 0.9rem;
        line-height: 1.8;
    }

    .value-description br {
        display: none;
    }
}

@media (max-width: 480px) {
    .values-section {
        padding: 48px 0;
    }

    .value-card {
        padding: 1.5rem 1.25rem;
    }

    .value-icon {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .value-title {
        font-size: 1.15rem;
    }

    .value-subtitle {
        font-size: 0.85rem;
    }

    .value-description {
        font-size: 0.875rem;
    }
}

/* ==========================================================================
   History Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .history-section {
        padding: 60px 0;
    }

    .history-narrative {
        max-width: 100%;
    }

    .narrative-content {
        padding: 2rem 1.5rem;
        border-radius: 12px;
    }

    .narrative-content::before {
        width: 3px;
    }

    .narrative-paragraph {
        font-size: 0.95rem;
        line-height: 1.9;
        margin-bottom: 1.5rem;
        padding-left: 0.25rem;
    }

    .narrative-paragraph br {
        display: none;
    }

    .narrative-emphasis {
        font-size: 1.05rem;
        padding-top: 1rem;
        margin-top: 0.75rem;
    }

    /* タイムライン（旧形式）対応 */
    .timeline::before {
        left: 16px;
    }

    .timeline-item {
        grid-template-columns: 40px 1fr;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .timeline-item:nth-child(even) .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content {
        grid-column: 2;
        text-align: left;
    }

    .timeline-item:nth-child(even) .timeline-marker,
    .timeline-item:nth-child(odd) .timeline-marker {
        grid-column: 1;
    }

    .marker-dot {
        width: 16px;
        height: 16px;
        border-width: 3px;
    }

    .marker-dot.active {
        width: 24px;
        height: 24px;
    }

    .timeline-content {
        padding: 1.25rem;
    }

    .timeline-date {
        font-size: 0.8rem;
        padding: 0.2rem 0.75rem;
    }

    .timeline-title {
        font-size: 1.1rem;
    }

    .timeline-description {
        font-size: 0.9rem;
        line-height: 1.75;
    }
}

@media (max-width: 480px) {
    .history-section {
        padding: 48px 0;
    }

    .narrative-content {
        padding: 1.5rem 1rem;
    }

    .narrative-paragraph {
        font-size: 0.9rem;
    }

    .narrative-emphasis {
        font-size: 1rem;
    }

    .timeline-content {
        padding: 1rem;
    }

    .timeline-title {
        font-size: 1rem;
    }

    .timeline-description {
        font-size: 0.875rem;
    }
}

/* ==========================================================================
   Company Info Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .company-info-section {
        padding: 60px 0;
    }

    .company-info-card {
        max-width: 100%;
        padding: 2rem 1.5rem;
        border-radius: 12px;
    }

    .info-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 1.25rem 0;
    }

    .info-item dt {
        font-size: 0.85rem;
        gap: 0.4rem;
    }

    .info-item dt i {
        font-size: 1rem;
    }

    .info-item dd {
        font-size: 0.95rem;
        line-height: 1.75;
        padding-left: 0;
    }

    .info-item dd br {
        display: inline;
    }
}

@media (max-width: 480px) {
    .company-info-section {
        padding: 48px 0;
    }

    .company-info-card {
        padding: 1.5rem 1rem;
    }

    .info-item {
        padding: 1rem 0;
    }

    .info-item dd {
        font-size: 0.9rem;
    }
}

/* ==========================================================================
   About CTA Section Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .about-cta {
        padding: 60px 0;
    }

    .about-cta::before {
        opacity: 0.5;
    }

    .cta-content {
        max-width: 100%;
        padding: 0 10px;
    }

    .cta-title {
        font-size: 1.5rem;
        line-height: 1.5;
        margin-bottom: 1.25rem;
    }

    .cta-text {
        font-size: 0.95rem;
        line-height: 1.8;
        margin-bottom: 2rem;
    }

    .cta-text br {
        display: none;
    }

    .btn-large {
        width: 100%;
        max-width: 300px;
        padding: 1rem 2rem;
        font-size: 1rem;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .about-cta {
        padding: 48px 0;
    }

    .cta-title {
        font-size: 1.35rem;
    }

    .cta-text {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }

    .btn-large {
        max-width: 100%;
        padding: 0.9rem 1.5rem;
        font-size: 0.95rem;
    }
}

/* ==========================================================================
   Touch Device Optimizations
   ========================================================================== */
@media (hover: none) and (pointer: coarse) {
    /* ホバー効果完全無効化 */
    .philosophy-card:hover,
    .harmony-card:hover,
    .value-card:hover,
    .timeline-item:hover .timeline-content,
    .btn-large:hover {
        transform: none;
        box-shadow: inherit;
    }

    .philosophy-card:hover .card-icon,
    .harmony-card:hover .harmony-icon,
    .value-card:hover .value-icon {
        transform: none;
        background: inherit;
        color: inherit;
    }

    /* タッチターゲットサイズ */
    .btn-large,
    .info-item dd a {
        min-height: 48px;
    }

    /* アクティブ状態 */
    .btn-large:active {
        opacity: 0.9;
        transform: scale(0.98);
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .about-hero *,
    .hero-background::before,
    .hero-particles,
    .marker-dot.active {
        animation: none !important;
    }

    .philosophy-card,
    .harmony-card,
    .value-card,
    .timeline-content,
    .btn-large {
        transition: none !important;
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */
@media (max-width: 768px) {
    /* フォーカス状態 */
    .btn-large:focus,
    .info-item dd a:focus {
        outline: 2px solid #ffffff;
        outline-offset: 3px;
    }

    /* 十分なコントラスト */
    .message-paragraph,
    .card-description,
    .harmony-description,
    .value-description,
    .narrative-paragraph {
        color: #374151;
    }

    /* リンクの可視性 */
    .info-item dd a {
        text-decoration: underline;
        text-underline-offset: 2px;
    }
}