/* ==========================================
   Philosophy Section - Enhanced Design
   ========================================== */

.philosophy-section {
    padding: 8rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e9ece7 50%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
    color: #333333;
}

/* 背景パターン装飾 */
.philosophy-background-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(129, 125, 108, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(129, 125, 108, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.philosophy-content-wrapper {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.08),
        0 0 1px rgba(0, 0, 0, 0.1);
}

/* 引用符装飾 */
.philosophy-quote-mark {
    font-size: 10rem;
    line-height: 0.5;
    color: rgba(129, 125, 108, 0.15);
    font-family: Georgia, serif;
    margin-bottom: -2rem;
    user-select: none;
}

.philosophy-section-title {
    font-size: 2.5rem;
    color: #2c3e50;
    font-weight: 300;
    margin-bottom: 1rem;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', Georgia, serif;
    letter-spacing: 0.05em;
    line-height: 1.4;
}

.philosophy-author {
    font-size: 1.2rem;
    color: #817d6c;
    font-style: italic;
    margin-bottom: 2.5rem;
    font-family: Georgia, serif;
    font-weight: 400;
}

/* 区切り線装飾 */
.philosophy-divider {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #817d6c, transparent);
    margin: 2rem auto;
    position: relative;
}

.philosophy-divider::before {
    content: '◆';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #817d6c;
    font-size: 0.8rem;
    background: #f8f9fa;
    padding: 0 0.5rem;
}

.philosophy-quote {
    margin: 2rem 0 2.5rem;
}

.japanese-quote {
    font-size: 1.8rem;
    color: #555;
    font-style: normal;
    text-align: center;
    margin: 0;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', 'Hiragino Mincho ProN', serif;
    font-weight: 500;
    letter-spacing: 0.08em;
    line-height: 1.8;
}

.philosophy-description {
    max-width: 750px;
    margin: 0 auto;
}

.philosophy-description p {
    font-size: 1.2rem;
    line-height: 2;
    color: #444;
    margin: 0;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', sans-serif;
    font-weight: 400;
}

.pc-only {
    display: inline;
}

/* ==========================================
   Mission Section - Enhanced Design
   ========================================== */

.mission-section {
    padding: 100px 0;
    background:
        linear-gradient(135deg, rgba(248, 249, 250, 0.95) 0%, rgba(255, 255, 255, 0.9) 50%, rgba(233, 236, 231, 0.95) 100%),
        url('../images/backk.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 背景装飾パターン */
.mission-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(158, 212, 156, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(129, 200, 217, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(244, 164, 96, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* 幾何学模様装飾 */
.mission-section::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(129, 125, 108, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.mission-section .container {
    position: relative;
    z-index: 1;
}

.mission-header {
    margin-bottom: 3rem;
}

.mission-title {
    font-size: 4rem;
    color: #000000;
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', sans-serif;
}

.mission-subtitle {
    font-size: 1.1rem;
    color: #666;
    font-weight: 400;
    margin-bottom: 0;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', serif;
    letter-spacing: 0.05em;
}

.mission-content {
    margin: 3rem auto 5rem;
    display: flex;
    justify-content: center;
}

.mission-text-wrapper {
    position: relative;
    padding: 3rem 4rem;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.9) 100%);
    backdrop-filter: blur(10px);
    border-radius: 25px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.12),
        0 1px 3px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    max-width: 800px;
    border: 2px solid rgba(129, 125, 108, 0.15);
    overflow: hidden;
}

/* コーナー装飾 - 疑似要素を使わず、.mission-text-wrapperに直接ボーダーイメージを追加 */
.mission-text-wrapper {
    background-image:
        linear-gradient(to right, #817d6c 2px, transparent 2px),
        linear-gradient(to bottom, #817d6c 2px, transparent 2px),
        linear-gradient(to right, #817d6c 2px, transparent 2px),
        linear-gradient(to bottom, #817d6c 2px, transparent 2px);
    background-size: 40px 40px, 40px 40px, 40px 40px, 40px 40px;
    background-position: 15px 15px, 15px 15px, right 15px bottom 15px, right 15px bottom 15px;
    background-repeat: no-repeat;
}

.mission-text {
    font-size: 1.8rem;
    color: #2c3e50;
    font-weight: 500;
    line-height: 2;
    margin: 0;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', 'Hiragino Mincho ProN', serif;
    letter-spacing: 0.05em;
}

/* ==========================================
   Value Section - Enhanced Card Design
   ========================================== */

.insight-section {
    margin-top: 80px;
    padding: 4rem 0;
    position: relative;
}

/* VALUEセクション背景装飾 */
.insight-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(154, 216, 76, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.insight-section::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(129, 200, 217, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.insight-header {
    margin-bottom: 4rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.insight-title {
    font-size: 3.5rem;
    color: #000000;
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', sans-serif;
}

.insight-subtitle {
    font-size: 1rem;
    color: #666;
    font-weight: 400;
    margin: 0;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', serif;
    letter-spacing: 0.05em;
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.insight-card {
    position: relative;
    perspective: 1000px;
    transition: transform 0.3s ease;
}

.insight-card:hover {
    transform: translateY(-8px);
}

.insight-card-inner {
    position: relative;
    background: #ffffff;
    border-radius: 20px;
    padding: 2.5rem 1.5rem;
    height: 100%;
    box-shadow:
        0 10px 30px rgba(0, 0, 0, 0.08),
        0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(129, 125, 108, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.insight-card:hover .insight-card-inner {
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.12),
        0 2px 5px rgba(0, 0, 0, 0.08);
    border-color: rgba(129, 125, 108, 0.3);
}

/* グラデーション装飾 */
.insight-card-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #817d6c, #9AD84C, #81C8D9);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.insight-card:hover .insight-card-inner::before {
    opacity: 1;
}

.insight-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 700;
    color: rgba(129, 125, 108, 0.08);
    font-family: 'Arial', sans-serif;
    line-height: 1;
    transition: all 0.4s ease;
}

.insight-card:hover .insight-number {
    color: rgba(129, 125, 108, 0.15);
    transform: scale(1.1);
}

.insight-icon-wrapper {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, #f8f9fa, #e9ece7);
    padding: 15px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.insight-card:hover .insight-icon-wrapper {
    background: linear-gradient(135deg, #817d6c, #928c7b);
    transform: rotate(5deg) scale(1.05);
}

.insight-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: all 0.4s ease;
    filter: grayscale(20%);
}

.insight-card:hover .insight-icon {
    filter: grayscale(0%) brightness(1.1);
}

.insight-text {
    font-size: 1rem;
    color: #444;
    line-height: 1.8;
    margin: 0;
    font-family: 'Yu Kyokasho', 'YuKyokasho', '游教科書体', 'Hiragino Mincho ProN', sans-serif;
    font-weight: 400;
    letter-spacing: 0.02em;
    transition: color 0.3s ease;
}

.insight-card:hover .insight-text {
    color: #2c3e50;
}

/* ==========================================
   Responsive Design - タブレット
   ========================================== */

@media (max-width: 1024px) {
    .philosophy-section {
        padding: 6rem 0;
    }

    .philosophy-content-wrapper {
        padding: 2.5rem;
    }

    .philosophy-quote-mark {
        font-size: 8rem;
    }

    .philosophy-section-title {
        font-size: 2.2rem;
    }

    .japanese-quote {
        font-size: 1.6rem;
    }

    .philosophy-description p {
        font-size: 1.1rem;
    }

    .mission-title {
        font-size: 3.5rem;
    }

    .mission-text {
        font-size: 1.6rem;
    }

    .insight-title {
        font-size: 3rem;
    }

    .insight-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
    }
}

/* ==========================================
   Responsive Design - モバイル
   ========================================== */

@media (max-width: 767px) {
    .philosophy-section {
        padding: 4rem 0;
    }

    .philosophy-content-wrapper {
        padding: 2rem 1.5rem;
        border-radius: 20px;
        margin: 0 1rem;
    }

    .philosophy-quote-mark {
        font-size: 5rem;
        margin-bottom: -1rem;
    }

    .philosophy-section-title {
        font-size: 1.4rem;
        letter-spacing: 0.02em;
        line-height: 1.6;
    }

    .philosophy-author {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }

    .philosophy-divider {
        width: 40px;
        margin: 1.5rem auto;
    }

    .japanese-quote {
        font-size: 1.2rem;
        letter-spacing: 0.05em;
        line-height: 1.8;
    }

    .philosophy-description p {
        font-size: 0.95rem;
        line-height: 1.8;
    }

    .pc-only {
        display: none;
    }

    .mission-section {
        padding: 60px 0;
    }

    .mission-header {
        margin-bottom: 2rem;
    }

    .mission-title {
        font-size: 2.5rem;
        letter-spacing: 0.1em;
    }

    .mission-subtitle {
        font-size: 0.95rem;
    }

    .mission-content {
        margin: 2rem auto 3rem;
    }

    .mission-text-wrapper {
        padding: 2rem 1.5rem;
        border-radius: 15px;
        margin: 0 1rem;
    }

    .mission-text-wrapper::before,
    .mission-text-wrapper::after {
        width: 25px;
        height: 25px;
    }

    .mission-text-wrapper::before {
        top: 10px;
        left: 10px;
    }

    .mission-text-wrapper::after {
        bottom: 10px;
        right: 10px;
    }

    .mission-text {
        font-size: 1.2rem;
        line-height: 1.8;
        letter-spacing: 0.03em;
    }

    .insight-section {
        margin-top: 50px;
    }

    .insight-header {
        margin-bottom: 2.5rem;
    }

    .insight-title {
        font-size: 2rem;
        letter-spacing: 0.1em;
    }

    .insight-subtitle {
        font-size: 0.9rem;
    }

    .insight-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .insight-card-inner {
        padding: 2rem 1.5rem;
        border-radius: 15px;
    }

    .insight-number {
        font-size: 2.5rem;
        top: 15px;
        right: 15px;
    }

    .insight-icon-wrapper {
        width: 80px;
        height: 80px;
        margin-bottom: 1.2rem;
    }

    .insight-text {
        font-size: 0.9rem;
        line-height: 1.7;
    }
}

/* 極小デバイス用 */
@media (max-width: 480px) {
    .philosophy-section-title {
        font-size: 1.2rem;
    }

    .japanese-quote {
        font-size: 1.1rem;
    }

    .philosophy-description p {
        font-size: 0.9rem;
    }

    .mission-title {
        font-size: 2rem;
    }

    .mission-text {
        font-size: 1.1rem;
    }

    .insight-title {
        font-size: 1.8rem;
    }

    .insight-card-inner {
        padding: 1.5rem 1rem;
    }

    .insight-text {
        font-size: 0.85rem;
    }
}