/* =========================================================
   About Page Styles (Blue Leaf Studio)
   ========================================================= */

/* 共通設定 */
.about-main {
    padding-top: 100px; /* 固定ヘッダー分の余白 */
    overflow: hidden;
}

.page-header {
    padding: 80px 0 40px;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
    color: var(--color-main);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--color-sub);
    letter-spacing: 0.1em;
}

/* =========================================================
   Layout 1: Split Concept (2 Columns)
   ========================================================= */
.about-layout-1 {
    padding: 100px 0;
}

.split-layout-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
}

.split-image-col {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
}

.split-image-col .image-wrapper {
    width: 100%;
    max-width: 450px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-float);
    border: 8px solid var(--glass-bg);
}

.split-image-col img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.split-text-col {
    flex: 1.2;
    min-width: 300px;
    padding: 50px !important; /* glass-cardのpaddingを上書き/強調 */
}

.split-heading {
    font-size: 1.6rem;
    line-height: 1.5;
    margin-bottom: 30px;
    color: var(--color-main);
    font-weight: 600;
    border-bottom: 2px solid var(--color-sub);
    padding-bottom: 15px;
    display: inline-block;
}

.profile-text p {
    margin-bottom: 20px;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-main);
}

.profile-text p:last-child {
    margin-bottom: 0;
}

/* =========================================================
   Layout 2: Architecture Concept
   ========================================================= */
.about-layout-2 {
    padding: 0 0 100px; /* 上部パディングを消してヒーローを上に */
}

.architecture-hero {
    position: relative;
    width: 100%;
    height: 60vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 80px;
}

.hero-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 背景画像：モダンで奥行きのある風景を想定。プレビュー用にグラデーションとパターンを使用 */
    background: linear-gradient(135deg, rgba(50, 155, 167, 0.8), rgba(38, 132, 142, 0.9)), url('../images/top-1.png') center/cover;
    background-color: var(--color-main);
    z-index: 1;
}

.hero-overlay {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
    padding: 40px 60px !important;
}

.hero-catchphrase {
    font-size: 2rem;
    line-height: 1.5;
    color: var(--color-main);
}

.architecture-content {
    max-width: 900px; /* 少し狭めて読みやすく */
}

.arch-section {
    margin-bottom: 60px;
}

.arch-title {
    font-size: 1.8rem;
    color: var(--color-main);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.arch-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--color-sub);
}

.arch-body {
    padding: 40px !important;
}

.arch-lead {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-text-main);
}

/* Core Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-card {
    background: var(--glass-bg);
    border: var(--glass-border);
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.skill-card h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--color-main);
}

.skill-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* =========================================================
   Layout 3: Timeline Concept
   ========================================================= */
.about-layout-3 {
    padding: 100px 0;
}

.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 60px auto 0;
    padding: 20px 0;
}

/* 中央のライン */
.timeline-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background-color: var(--color-sub);
    transform: translateX(-50%);
    z-index: 1;
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    width: 50%;
    padding-right: 50px;
    z-index: 2;
}

.timeline-item.right {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 50px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

/* タイムラインのドット */
.timeline-dot {
    position: absolute;
    top: 30px;
    right: -10px; /* 50% line */
    width: 20px;
    height: 20px;
    background-color: var(--color-main);
    border: 4px solid var(--color-white);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(50, 155, 167, 0.2);
    z-index: 3;
}

.timeline-item.right .timeline-dot {
    right: auto;
    left: -10px;
}

.timeline-content {
    padding: 30px !important;
}

.timeline-year {
    display: inline-block;
    padding: 5px 15px;
    background-color: var(--color-main);
    color: var(--color-white);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
    letter-spacing: 0.05em;
}

.timeline-heading {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--color-text-main);
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* =========================================================
   Responsive Design
   ========================================================= */
@media (max-width: 768px) {
    /* Split Layout */
    .split-layout-container {
        flex-direction: column;
        gap: 30px;
    }
    
    .split-text-col {
        padding: 30px !important;
    }

    /* Architecture Layout */
    .architecture-hero {
        height: 40vh;
        min-height: 300px;
    }
    
    .hero-catchphrase {
        font-size: 1.4rem;
    }
    
    .hero-overlay {
        padding: 30px !important;
        margin: 0 20px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    /* Timeline Layout */
    .timeline-line {
        left: 30px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 0;
    }

    .timeline-item.right {
        margin-left: 0;
        padding-left: 70px;
    }

    .timeline-dot {
        left: 20px !important;
        right: auto !important;
    }
}