global.css

@charset "UTF-8";

html, body {
    width: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    margin: 0;
    padding: 0;
}

:root {
    color-scheme: light dark;

    --accent:        #0067c0;
    --accent-light:  #60b0f4;
    --accent-subtle: rgba(0, 103, 192, 0.12);

    --bg-mica:       #f3f3f3;
    --bg-layer:      rgba(255, 255, 255, 0.72);
    --bg-layer2:     rgba(255, 255, 255, 0.55);
    --stroke:        rgba(0, 0, 0, 0.08);
    --stroke-strong: rgba(0, 0, 0, 0.16);
    --text:          #1a1a1a;
    --text-sec:      #5a5a5a;
    --fill-hover:    rgba(0, 0, 0, 0.04);
    --fill-press:    rgba(0, 0, 0, 0.06);

    --footer-bg:     rgba(240, 240, 240, 0.88);
    --footer-text:   #333;

    --shadow-card:   0 2px 4px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.06);
    --radius:        8px;
    --radius-sm:     4px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --accent:        #60b0f4;
        --accent-light:  #9cd0ff;
        --accent-subtle: rgba(96, 176, 244, 0.14);

        --bg-mica:       #202020;
        --bg-layer:      rgba(44, 44, 44, 0.78);
        --bg-layer2:     rgba(56, 56, 56, 0.60);
        --stroke:        rgba(255, 255, 255, 0.08);
        --stroke-strong: rgba(255, 255, 255, 0.14);
        --text:          #f0f0f0;
        --text-sec:      #9a9a9a;
        --fill-hover:    rgba(255, 255, 255, 0.06);
        --fill-press:    rgba(255, 255, 255, 0.04);

        --footer-bg:     rgba(28, 28, 28, 0.92);
        --footer-text:   #9a9a9a;

        --shadow-card:   0 2px 4px rgba(0,0,0,.24), 0 8px 24px rgba(0,0,0,.32);
    }
}

/* ───── ハイコントラスト ライト ───── */
@media (prefers-contrast: more) {
    :root {
        --accent:        #0050a0;
        --accent-light:  #0050a0;
        --accent-subtle: transparent;

        --bg-mica:       #ffffff;
        --bg-layer:      #ffffff;
        --bg-layer2:     #f0f0f0;
        --stroke:        #000000;
        --stroke-strong: #000000;
        --text:          #000000;
        --text-sec:      #000000;
        --fill-hover:    #e0e0e0;
        --fill-press:    #c8c8c8;

        --footer-bg:     #ffffff;
        --footer-text:   #000000;

        --shadow-card:   none;
    }

    body {
        background-image: none;
    }

    .intro-container,
    .navbar,
    .footer {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .intro-container {
        border-width: 2px;
        border-color: #000000;
    }

    .intro-container::before {
        opacity: 1;
    }

    .nav-link.active::before {
        height: 3px;
    }

    a:hover {
        text-decoration: underline;
    }
}

/* ───── ハイコントラスト ダーク ───── */
@media (prefers-color-scheme: dark) and (prefers-contrast: more) {
    :root {
        --accent:        #6cb8ff;
        --accent-light:  #6cb8ff;
        --accent-subtle: transparent;

        --bg-mica:       #000000;
        --bg-layer:      #000000;
        --bg-layer2:     #1a1a1a;
        --stroke:        #ffffff;
        --stroke-strong: #ffffff;
        --text:          #ffffff;
        --text-sec:      #ffffff;
        --fill-hover:    #2a2a2a;
        --fill-press:    #3a3a3a;

        --footer-bg:     #000000;
        --footer-text:   #ffffff;

        --shadow-card:   none;
    }

    body {
        background-image: none;
    }

    .intro-container,
    .navbar,
    .footer {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .intro-container {
        border-width: 2px;
        border-color: #ffffff;
    }

    .intro-container::before {
        opacity: 1;
    }

    .nav-link.active::before {
        height: 3px;
    }

    a:hover {
        text-decoration: underline;
    }
}

body {
    user-select: none;
    background-color: var(--bg-mica);
    background-image:
        radial-gradient(ellipse 80% 60% at 70% 20%, var(--accent-subtle) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 10% 80%, var(--accent-subtle) 0%, transparent 60%);
    color: var(--text);
    font-family: 'Segoe UI Variable', 'Segoe UI', 'メイリオ', Meiryo, 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    box-sizing: border-box;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* ───── メインカード ───── */
.intro-container {
    background: var(--bg-layer);
    backdrop-filter: blur(32px) saturate(1.8);
    -webkit-backdrop-filter: blur(32px) saturate(1.8);
    border-radius: var(--radius);
    border: 1px solid var(--stroke);
    box-shadow: var(--shadow-card);
    max-width: 760px;
    width: calc(100% - 40px);
    margin: 24px auto;
    padding: 28px 32px;
    box-sizing: border-box;
    transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* ───── 見出し ───── */
h1 {
    color: var(--text);
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 12px;
    letter-spacing: -0.01em;
    transition: color 0.25s ease;
}

h2 {
    color: var(--text);
    font-size: 15px;
    font-weight: 600;
    margin: 20px 0 8px;
    transition: color 0.25s ease;
}

/* ───── テキスト ───── */
p {
    color: var(--text-sec);
    margin: 8px 0;
    font-size: 13.5px;
}

p strong {
    color: var(--text);
    font-weight: 500;
}

/* ───── リスト ───── */
ul {
    padding-left: 1.4em;
    margin: 8px 0 12px;
    color: var(--text-sec);
    font-size: 13.5px;
}

ul li {
    margin: 4px 0;
    line-height: 1.6;
}

ul strong {
    color: var(--text);
    font-weight: 500;
}

/* ───── アクセントライン (カード左境界) ───── */
.intro-container::before {
    content: '';
    display: block;
    width: 3px;
    height: calc(100% - 48px);
    background: var(--accent);
    border-radius: 2px;
    position: absolute;
    left: 0;
    top: 24px;
    opacity: 0.75;
    pointer-events: none;
}

.intro-container {
    position: relative;
    overflow: hidden;
}

/* ───── リンク (Fluent HyperlinkButton風) ───── */
a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--accent);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 4px 8px;
    margin: 2px 4px 2px 0;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease, color 0.15s ease;
    position: relative;
}

a::after {
    content: '->';
    font-size: 11px;
    opacity: 0.7;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

a:hover {
    background: var(--accent-subtle);
    color: var(--accent-light);
}

a:hover::after {
    transform: translateX(2px);
    opacity: 1;
}

a:active {
    background: var(--fill-press);
}

a.no-arrow {
    font-size: 13.5px;
    gap: 0;
    padding: 0;
    margin: 0;
}

a.no-arrow::after {
    content: none !important;
}

/* ───── アイコン ───── */
.icon {
    font-size: 2em;
    margin-bottom: 8px;
    display: block;
}

/* ───── プロフィールリンク (index.css相当) ───── */
.profile-links-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
    margin: 10px 0;
}

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    background: var(--bg-layer2);
    border: 1px solid var(--stroke);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--text);
    font-size: 13px;
    font-weight: 400;
    transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    position: relative;
    overflow: hidden;
}

.profile-link::after {
    content: none;
}

.profile-link img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex-shrink: 0;
    object-fit: cover;
}

.profile-link span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.profile-link:hover {
    background: var(--fill-hover);
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-subtle);
    color: var(--accent);
}

img {
    border-radius: 8px;
}

img:not([src]),
img[src=""],
img[src="null"],
img[src="undefined"],
img[src="./null.png"] {
    border: 1px solid var(--stroke);
}

/* ───── フォールバック (JS無効・レガシーブラウザ) ───── */
.fallback-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-mica);
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.fallback-container {
    animation: none;
}

/* ───── フッター ───── */
.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background: var(--footer-bg);
    backdrop-filter: blur(24px) saturate(1.5);
    -webkit-backdrop-filter: blur(24px) saturate(1.5);
    border-top: 1px solid var(--stroke);
    color: var(--footer-text);
    text-align: center;
    padding: 12px 0;
    font-size: 12px;
    letter-spacing: 0.04em;
    z-index: 100;
    box-sizing: border-box;
    transition: background 0.25s ease, color 0.25s ease;
}

/* ───── Navbar ───── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 48px;
    background: var(--footer-bg);
    backdrop-filter: blur(24px) saturate(1.6);
    -webkit-backdrop-filter: blur(24px) saturate(1.6);
    border-bottom: 1px solid var(--stroke);
    display: flex;
    align-items: center;
    padding: 0 16px;
    box-sizing: border-box;
    z-index: 200;
    gap: 4px;
    transition: background 0.25s ease;
}

.nav-brand-link {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.04em;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease;
    flex-shrink: 0;
}

.nav-brand-link::after { content: none; }

.nav-brand-link:hover {
    background: var(--fill-hover);
    color: var(--text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    margin: 0 0 0 8px;
    padding: 0;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-links::-webkit-scrollbar { display: none; }

.nav-link {
    display: inline-flex;
    align-items: center;
    color: var(--text-sec);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease;
    position: relative;
}

.nav-link::after { content: none; }

.nav-link:hover {
    background: var(--fill-hover);
    color: var(--text);
}

.nav-link:active {
    background: var(--fill-press);
}

.nav-link.active {
    color: var(--accent);
    background: var(--accent-subtle);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    border-radius: 2px 2px 0 0;
    background: var(--accent);
}

/* ───── ハンバーガー ───── */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 6px;
    margin-left: auto;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s ease;
}

.nav-hamburger:hover { background: var(--fill-hover); }

.nav-hamburger span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-hamburger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
.nav-hamburger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.nav-hamburger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ───── メインコンテンツ領域 ───── */
.main-content {
    padding: 72px 20px 100px;
    min-height: 100vh;
    box-sizing: border-box;
}

@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.intro-container {
    animation: pageFadeIn 0.22s ease forwards;
}

/* ───── ローダー ───── */
.page-loader {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 80px 0;
}

.page-loader.hidden { display: none; }

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-ring {
    width: 28px;
    height: 28px;
    border: 2.5px solid var(--stroke-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* ───── レスポンシブ ───── */
@media (max-width: 600px) {
    .nav-hamburger { display: flex; }

    .nav-links {
        display: none;
        position: fixed;
        top: 48px;
        left: 0;
        width: 100%;
        background: var(--footer-bg);
        backdrop-filter: blur(24px) saturate(1.6);
        -webkit-backdrop-filter: blur(24px) saturate(1.6);
        border-bottom: 1px solid var(--stroke);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 6px 8px 10px;
        margin: 0;
        overflow-x: visible;
    }

    .nav-links.open { display: flex; }

    .nav-link {
        padding: 10px 14px;
        border-radius: var(--radius-sm);
    }

    .nav-link.active::before { display: none; }

    .intro-container {
        padding: 20px 18px;
        width: calc(100% - 24px);
    }

    h1 { font-size: 17px; }
    h2 { font-size: 14px; }

    .profile-links-container {
        grid-template-columns: 1fr;
    }
}