/* --- 1. 一般設定と変数 --- */
:root {
    --primary-color: #17a2b8; /* サイバーブルー */
    --secondary-color: #6c757d; 
    --accent-color: #38c172; /* アクセントカラー */
    --text-color: #333;
    --bg-color: #f0f2f5; 
    --card-bg: #ffffff; 
    --font-family: 'Poppins', 'Noto Sans JP', sans-serif; 
    --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.08); 
}

/* ダークモード設定 */
.dark-mode {
    --text-color: #e9ecef;
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --primary-color: #00bcd4; 
    --secondary-color: #adb5bd;
    --shadow-light: 0 4px 15px rgba(0, 0, 0, 0.4); 
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.8; 
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.4s, color 0.4s; 
    padding-top: 80px; 
    letter-spacing: 0.03em; /* 文字と文字の間に少しゆとりを持たせる */
    word-break: break-all; /* 日本語の改行を自然にする */
    
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--secondary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
body.dark-mode .certmaster-table tbody tr:hover {
    background-color: rgba(23, 162, 184, 0.15); /* ライトモードより少し濃くして目立たせる */
}

body.dark-mode .lab-summary {
    background-color: rgba(23, 162, 184, 0.15);
}

/* --- 2. ヘッダーとナビゲーション --- */
.hero-section {
    background: var(--bg-color);
    padding-bottom: 30px;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-color) 70%, rgba(23, 162, 184, 0.05) 100%);
}
.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px; /* ボタン間の隙間を均等にする */
    flex-wrap: wrap; /* スマホで画面が狭い場合は縦並びになるよう配慮 */
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;    
    background-color: var(--card-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: background-color 0.4s;
    padding-left: 5%;
    padding-right: 5%;
    height: 80px;
}

.dark-mode .navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.logo a.minimal-logo {
    display: flex;
    align-items: center;
    height: 40px; 
}

.logo-icon {
    width: 40px;
    height: 40px;
    transition: transform 0.3s ease, opacity 0.3s;
}

.logo a.minimal-logo:hover .logo-icon {
    transform: rotate(5deg) scale(1.1);
    opacity: 0.9;
}

.logo-icon path, .logo-icon line { stroke: var(--primary-color); }
.logo-icon text { fill: var(--primary-color); }

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    font-weight: 600;
    padding: 5px 10px;
    font-size: 0.95rem;
}

.dark-mode-btn {
    background: none;
    border: 1px solid var(--secondary-color);
    color: var(--text-color);
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 5px;
    margin-left: 15px;
    transition: all 0.3s;
}

.dark-mode-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.burger-menu {
    display: none; 
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

.profile-picture {
    width: 180px; 
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    margin-top: 40px;
    padding: 5px; 
    border: 3px solid var(--primary-color);
    background: var(--card-bg);
    box-shadow: 0 0 0 5px rgba(23, 162, 184, 0.2), 0 10px 20px rgba(0,0,0,0.1); 
    transition: transform 0.3s;
}

.profile-picture:hover {
    transform: scale(1.05);
}

.hero-content h1 {
    font-size: 2.8rem;
    margin-top: 15px;
    font-weight: 700;
}

.tagline {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 30px;
    font-weight: 600; 
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    border-radius: 30px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.2s;
    text-align: center;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}

.primary-btn:hover {
    background-color: #138496;
    transform: translateY(-2px);
    color: white;
}

.secondary-btn {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.secondary-btn:hover {
    background-color: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

/* Resume Button Style */
.resume-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--card-bg);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}
.resume-btn:hover {
    color: white;
}

/* --- 3. セクション共通設定 --- */
.section-padding {
    padding: 80px 0;
}

.section-padding h2 {
    text-align: center;
    font-size: 2.5rem; 
    margin-bottom: 50px;
    color: var(--text-color);
    position: relative;
    padding-bottom: 15px;
}

.section-padding h2::after {
    content: '';
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.bg-light {
    background-color: var(--card-bg);
}
body:not(.dark-mode) .bg-light {
    background-color: #ffffff;
}
body:not(.dark-mode) section:not(.bg-light) {
    background-color: #f0f2f5;
}
body.dark-mode .bg-light {
    background-color: #2d2d2d;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    margin-bottom: 20px;
    text-align: justify;
    font-size: 1.05rem;
}

/* --- 4. スキル (Skills) --- */
.skills-category {
    margin-bottom: 50px;
}

.skills-category h3 {
    text-align: left;
    margin-bottom: 25px;
    font-size: 1.5rem;
    color: var(--primary-color);
    border-left: 5px solid var(--primary-color);
    padding-left: 15px;
}

.skill-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    align-items: stretch;
}

.skill-item {
    background-color: var(--bg-color);
    padding: 25px;
    border-radius: 12px; 
    box-shadow: var(--shadow-light);
    text-align: center;
    border: 1px solid transparent; 
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.skill-item p {
    margin-top: auto; /* 追加: 説明文が短い場合でもバランスを保つ */
}
.skill-item:hover .skill-icon {
    transform: scale(1.2) rotate(5deg);
    transition: transform 0.3s ease;
}
body.dark-mode .skill-item {
    background-color: #383838;
}

.skill-item:hover {
    transform: translateY(-8px); 
    border-color: var(--primary-color);
}

.skill-icon {
    font-size: 2.5rem; 
    color: var(--primary-color);
    margin-bottom: 15px;
}

.certified-skill {
    border: 2px solid var(--accent-color); 
    background-color: rgba(56, 193, 114, 0.1) !important; 
}

.certified-skill h4 {
    color: #28a745; 
}

/* --- 5. 強み・思考法 (Philosophy / Comparison) --- */
.comparison-container { 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    gap: 20px; 
    margin-top: 30px; 
}

.comparison-card { 
    flex: 1; 
    min-width: 280px; 
    background: var(--card-bg); 
    border-radius: 10px; 
    box-shadow: var(--shadow-light); 
    overflow: hidden; 
}

.comp-header { 
    padding: 15px; 
    text-align: center; 
    color: white; 
    font-weight: bold; 
    font-size: 1.1rem;
}
.construction-card .comp-header { background: #6c757d; }
.cyber-card .comp-header { background: var(--primary-color); }

.comp-body { padding: 20px; }
.comp-body ul { list-style: none; }
.comp-body li { 
    margin-bottom: 12px; 
    color: var(--secondary-color); 
    font-size: 0.95rem; 
    display: flex;
    align-items: center;
}
.comp-body li i { margin-right: 10px; }
.dark-mode .comp-body li { color: #ccc; }

.transfer-icon { 
    font-size: 2rem; 
    color: var(--text-color); 
    opacity: 0.6; 
    transition: transform 0.3s;
}

/* --- 6. ラボ・研究実績 (Portfolio Summary & Tables) --- */
.portfolio-summary {
    text-align: center;
    margin-bottom: 50px;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.portfolio-summary p {
    font-size: 1.05rem;
    margin-bottom: 25px;
}

.tech-tags {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.tech-tag {
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 6px 20px;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    background-color: transparent;
}
/* 進捗バーのベース */
.progress-bar-container {
    width: 100%;
    background-color: rgba(128, 128, 128, 0.2);
    border-radius: 4px;
    height: 8px;
    margin-top: 5px;
    overflow: hidden;
}

/* 100%のバー */
.progress-bar-fill-100 {
    height: 100%;
    background-color: var(--accent-color); /* 緑色 */
    width: 100%;
}

/* 進行中のバー */
.progress-bar-fill-other {
    height: 100%;
    background-color: var(--primary-color); /* 青色 */
}

/* 横並びレイアウト用のコンテナ */
.certmaster-container {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    margin-bottom: 40px;
}

.certmaster-card {
    flex: 1;
    min-width: 0; /* 子要素（テーブル等）が親の幅を押し広げるのを防ぐ */
    background-color: var(--card-bg);
    padding: 30px 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    border: 1px solid transparent;
}

/* Accordion (Details/Summary) Styles */
.lab-details {
    width: 100%;
}

.lab-summary {
    cursor: pointer;
    padding: 12px 20px;
    background-color: rgba(23, 162, 184, 0.08);
    color: var(--primary-color);
    border-radius: 8px;
    font-weight: 600;
    list-style: none; /* Hide default arrow */
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s, transform 0.2s;
    user-select: none;
}

.lab-summary::-webkit-details-marker {
    display: none; /* Hide default arrow in Safari */
}

.lab-summary:hover {
    background-color: rgba(23, 162, 184, 0.15);
}

.lab-summary i {
    transition: transform 0.3s ease;
}

/* Rotate icon when open */
.lab-details[open] .lab-summary i {
    transform: rotate(180deg);
}

/* Table Styles */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.certmaster-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    min-width: 500px;
}

.certmaster-table th {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

.certmaster-table td {
    padding: 10px;
    border-bottom: 1px solid rgba(128, 128, 128, 0.2);
    color: var(--text-color);
    font-size: 0.9rem;
}

.certmaster-table tbody tr {
    transition: background-color 0.2s;
}

.certmaster-table tbody tr:hover {
    background-color: rgba(23, 162, 184, 0.08);
}

.progress-100 { 
    color: var(--accent-color); 
    font-weight: 700; 
}

.progress-other { 
    color: var(--primary-color); 
    font-weight: 700; 
}

.lab-type-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.8em;
    font-weight: 600;
    background-color: rgba(23, 162, 184, 0.1);
    color: var(--primary-color);
    white-space: nowrap;
}

/* --- 7. 目標 (Goals) --- */
.goal-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.goal-item {
    flex: 1 1 300px;
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    text-align: center;
}
body.dark-mode .goal-item {
    background-color: #383838;
}

.goal-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* --- 8. 連絡先とフッター --- */
.contact-info { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.contact-btn {
    padding: 10px 20px; border-radius: 5px;
    border: 1px solid #ddd; color: var(--text-color);
    display: flex; align-items: center; gap: 10px;
}
.contact-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }

/* --- 9. モバイル対応 (Mobile Responsive) --- */
@media (max-width: 992px) {
    /* タブレット・スマホ幅では横並びを解除して縦並びにする */
    .certmaster-container {
        flex-direction: column;
    }
    
    .certmaster-card {
        width: 100%;
    }
}

@media (max-width: 768px) {
    /* Navbar Styles */
    .navbar {
        padding: 10px 20px;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 80px; 
        left: 0;
        background-color: var(--card-bg);
        border-bottom: 1px solid rgba(0,0,0,0.1);
        padding: 20px;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
        animation: slideDown 0.3s ease forwards;
    }
    
    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .nav-links li {
        margin: 15px 0;
        width: 100%;
        text-align: center;
    }
    
    .dark-mode-btn {
        margin-left: 0;
        margin-top: 10px;
    }

    .burger-menu {
        display: block;
    }

    /* Hero Section */
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
        padding: 0 10px;
    }

    .profile-picture {
        width: 150px;
        height: 150px;
    }

    /* Philosophy Section Mobile Layout */
    .comparison-container {
        flex-direction: column; 
    }

    .comparison-card {
        width: 100%;
        min-width: auto;
    }

    .transfer-icon {
        transform: rotate(90deg); 
        margin: 15px 0;
    }

    /* General Adjustments */
    .section-padding h2 {
        font-size: 2rem;
    }
} 
/*スクロール時の「フワッと」表示（フェードイン）*/
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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