/* =====================================================
   AI活用システム (page-ai-system.php) 専用CSS
   
   既存の style.css / service-detail.css のデザイントークンを踏襲。
   ページ固有の新しいデザイン言語は増やさず、既存パーツの組み合わせで構成。
===================================================== */

/* ==========================================================================
   1. Hero — 強みバッジ + CTA
   ========================================================================== */

.ais-hero-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 2rem;
}

.ais-badge-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius, 12px);
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.ais-badge-item:hover {
    border-color: var(--neon-orange, #FF6B35);
    background: rgba(255, 107, 53, 0.08);
}

.ais-badge-icon {
    display: flex;
    color: var(--neon-orange, #FF6B35);
}

.ais-hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 2rem;
}

.cta-button--outline {
    background: transparent !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    color: rgba(255, 255, 255, 0.9) !important;
}

.cta-button--outline:hover {
    border-color: var(--neon-orange, #FF6B35) !important;
    background: rgba(255, 107, 53, 0.1) !important;
    color: #fff !important;
}

/* ==========================================================================
   2. よくある悩み
   ========================================================================== */

.ais-problems {
    padding: 80px 0;
}

.ais-problems-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 3rem;
}

.ais-problem-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-large, 20px);
    padding: 32px 28px;
    transition: all 0.3s ease;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.ais-problem-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.ais-problem-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 12px;
}

.ais-problem-body {
    flex: 1;
}

.ais-problem-text {
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 8px;
    line-height: 1.6;
}

.ais-problem-arrow {
    color: var(--neon-orange, #FF6B35);
    font-size: 1.2rem;
    margin: 4px 0;
    opacity: 0.7;
}

.ais-solution-text {
    font-size: 0.9rem;
    color: var(--neon-orange, #FF6B35);
    font-weight: 500;
    line-height: 1.6;
}

/* ==========================================================================
   3. できること — 機能カタログ
   ========================================================================== */

.ais-features {
    padding: 80px 0;
}

.ais-features-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 3rem;
}

.ais-feature-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-large, 20px);
    padding: 32px 24px;
    position: relative;
    transition: all 0.3s ease;
}

.ais-feature-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.ais-feature-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--neon-orange, #FF6B35), var(--warm-orange, #FF8C42));
    border-radius: 50%;
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.ais-feature-cat {
    display: inline-block;
    margin-left: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--neon-orange, #FF6B35);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    vertical-align: middle;
}

.ais-feature-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #fff;
    line-height: 1.5;
}

.ais-feature-desc {
    font-size: 0.88rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 16px;
}

.ais-feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ais-tag {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.72rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 100px;
    color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.03);
}

/* ==========================================================================
   4. 仕組み — アーキテクチャ図
   ========================================================================== */

.ais-architecture {
    padding: 80px 0;
}

.ais-arch-flow {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.ais-arch-step {
    flex: 0 0 auto;
    width: 180px;
    text-align: center;
    padding: 24px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius, 12px);
    transition: all 0.3s ease;
}

.ais-arch-step:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-3px);
}

.ais-arch-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.ais-arch-step h3 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.4;
}

.ais-arch-step p {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.ais-arch-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-orange, #FF6B35);
    font-size: 1.5rem;
    padding: 0 12px;
    min-height: 100px;
    font-weight: 700;
    opacity: 0.6;
}

.ais-arch-note {
    max-width: 700px;
    margin: 2rem auto 0;
    text-align: center;
    padding: 20px 24px;
    background: rgba(255, 107, 53, 0.06);
    border: 1px solid rgba(255, 107, 53, 0.15);
    border-radius: var(--border-radius, 12px);
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.ais-arch-note strong {
    color: var(--neon-orange, #FF6B35);
}

/* ==========================================================================
   5. 導入フロー — process-timeline 再利用（service-detail.css）
   ========================================================================== */

.ais-flow {
    padding: 80px 0;
}

/* ==========================================================================
   6. 導入効果
   ========================================================================== */

.ais-effects {
    padding: 80px 0;
}

.ais-effects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 3rem;
}

.ais-effect-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-large, 20px);
    padding: 32px 28px;
    transition: all 0.3s ease;
}

.ais-effect-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.ais-effect-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.ais-effect-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.5;
}

.ais-effect-card p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.8;
}

/* ==========================================================================
   7. 活用イメージ
   ========================================================================== */

.ais-cases {
    padding: 80px 0;
}

.ais-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 3rem;
}

.ais-case-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-large, 20px);
    padding: 32px 24px;
    transition: all 0.3s ease;
}

.ais-case-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-3px);
}

.ais-case-industry {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
}

.ais-case-flow,
.ais-case-point {
    margin-bottom: 12px;
}

.ais-case-flow-label,
.ais-case-point-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 6px;
}

.ais-case-flow-label {
    background: rgba(255, 107, 53, 0.12);
    color: var(--neon-orange, #FF6B35);
}

.ais-case-point-label {
    background: rgba(0, 200, 150, 0.12);
    color: #00c896;
}

.ais-case-flow p,
.ais-case-point p {
    font-size: 0.85rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   8. FAQ — faq-list / faq-item 再利用（style.css）
   ========================================================================== */

.ais-faq {
    padding: 80px 0;
}

.faq-list {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 0;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: color 0.3s ease;
    gap: 16px;
}

.faq-question:hover {
    color: var(--neon-orange, #FF6B35);
}

.faq-question span {
    flex: 1;
}

.faq-toggle {
    flex-shrink: 0;
    transition: transform 0.3s ease;
    color: rgba(255, 255, 255, 0.4);
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
}

.faq-answer p {
    font-size: 0.92rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.65);
    padding-left: 0;
}

/* ==========================================================================
   9. 最終CTA
   ========================================================================== */

.ais-final-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 1.5rem;
}

/* ==========================================================================
   10. レスポンシブ — iPad
   ========================================================================== */

@media (min-width: 769px) and (max-width: 1024px) {
    .ais-problems-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .ais-features-flow {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .ais-effects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ais-cases-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .ais-arch-flow {
        gap: 0;
    }

    .ais-arch-step {
        width: 150px;
        padding: 18px 12px;
    }

    .ais-arch-arrow {
        padding: 0 6px;
        font-size: 1.2rem;
    }
}

/* ==========================================================================
   11. レスポンシブ — スマホ
   ========================================================================== */

@media (max-width: 768px) {
    .ais-hero-badges {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .ais-badge-item {
        width: 100%;
        max-width: 260px;
        justify-content: center;
    }

    .ais-hero-cta,
    .ais-final-cta {
        flex-direction: column;
        align-items: center;
    }

    .ais-hero-cta .cta-button,
    .ais-final-cta .cta-button {
        width: 100%;
        max-width: 280px;
        text-align: center;
        justify-content: center;
    }

    .ais-problems-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .ais-problem-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 24px 20px;
    }

    .ais-features-flow {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .ais-feature-card {
        padding: 24px 20px;
    }

    .ais-feature-title {
        font-size: 1rem;
    }

    /* アーキテクチャ — 縦積み */
    .ais-arch-flow {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }

    .ais-arch-step {
        width: 100%;
        max-width: 280px;
    }

    .ais-arch-arrow {
        transform: rotate(90deg);
        min-height: auto;
        padding: 8px 0;
        font-size: 1.2rem;
    }

    .ais-effects-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .ais-effect-card {
        padding: 24px 20px;
    }

    .ais-cases-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .ais-case-card {
        padding: 24px 20px;
    }

    .faq-question {
        font-size: 0.92rem;
        padding: 16px 0;
    }

    .faq-answer p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .ais-badge-item {
        font-size: 0.82rem;
        padding: 8px 16px;
    }

    .ais-problem-card {
        padding: 20px 16px;
    }

    .ais-feature-card {
        padding: 20px 16px;
    }

    .ais-arch-step {
        max-width: 240px;
    }

    .ais-arch-step h3 {
        font-size: 0.85rem;
    }
}

/* ==========================================================================
   12. デザイン強化 — AI活用システムページ固有
   ========================================================================== */

/* 悩みカード: アイコン背景グラデ + トップボーダー */
.ais-problem-card {
    position: relative;
    overflow: hidden;
}

.ais-problem-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.ais-problem-card:hover::after {
    opacity: 1;
}

.ais-problem-icon {
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.1);
}

/* 機能カード: ステップバッジのグロー */
.ais-feature-step {
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
}

.ais-feature-card:hover .ais-feature-step {
    box-shadow: 0 4px 24px rgba(255, 107, 53, 0.5);
}

/* 機能カード: 左ボーダーアクセント */
.ais-feature-card {
    position: relative;
    overflow: hidden;
}

.ais-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: transparent;
    transition: background 0.3s;
}

.ais-feature-card:hover::before {
    background: linear-gradient(180deg, var(--neon-orange, #FF6B35), transparent);
}

/* タグのホバー */
.ais-tag {
    transition: all 0.2s;
}

.ais-feature-card:hover .ais-tag {
    border-color: rgba(255, 107, 53, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

/* アーキテクチャステップ: アイコン背景 */
.ais-arch-step {
    position: relative;
    overflow: hidden;
}

.ais-arch-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    background: rgba(255, 107, 53, 0.06);
    border-radius: 50%;
}

/* 効果カード: グラデーションボーダー */
.ais-effect-card {
    position: relative;
    overflow: hidden;
}

.ais-effect-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 24px;
    right: 24px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.ais-effect-card:hover::after {
    opacity: 1;
}

.ais-effect-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 53, 0.08);
    border-radius: 12px;
}

/* 事例カード: 業種名下のアクセントライン */
.ais-case-industry::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background: var(--neon-orange, #FF6B35);
    margin-top: 12px;
    border-radius: 2px;
    opacity: 0.5;
}