/* ===================================================
   FileMaker Master — メインスタイルシート
   =================================================== */

/* --- CSS変数 --- */
:root {
    --color-primary:    #0052cc;
    --color-primary-h:  #0041a8;
    --color-accent:     #ff6b35;
    --color-bg:         #f7f8fa;
    --color-surface:    #ffffff;
    --color-border:     #e0e4eb;
    --color-text:       #1a1a2e;
    --color-text-muted: #6b7280;
    --color-tag-bg:     #eef2ff;
    --color-tag-text:   #3b5bdb;
    --color-danger:     #ef4444;
    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
    --shadow-md:  0 4px 12px rgba(0,0,0,.10);
    --font-sans:  'Hiragino Sans', 'Meiryo', system-ui, sans-serif;
    --font-mono:  'SFMono-Regular', 'Consolas', 'Menlo', monospace;
    --max-w:      1100px;
    --transition: .15s ease;
}

/* --- リセット --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }

/* --- レイアウト --- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ===================================================
   ヘッダー
   =================================================== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex; align-items: center; gap: 16px;
    height: 60px;
}
.site-logo {
    display: flex; align-items: center; gap: 8px;
    font-size: 1.2rem; font-weight: 700;
    color: var(--color-text); text-decoration: none;
    flex-shrink: 0;
}
.logo-icon { font-size: 1.4rem; }
.header-nav { display: flex; gap: 4px; flex: 1; }
.nav-link {
    padding: 6px 12px; border-radius: var(--radius-sm);
    color: var(--color-text-muted); font-size: .9rem; font-weight: 500;
    transition: var(--transition); white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
    background: var(--color-tag-bg);
    text-decoration: none;
}
.header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

/* ハンバーガーボタン（デスクトップでは非表示） */
.hamburger {
    display: none;
    flex-direction: column; justify-content: center; align-items: center;
    gap: 5px; width: 44px; height: 44px;
    background: none; border: none; cursor: pointer; padding: 0;
}
.hamburger span {
    display: block; width: 22px; height: 2px;
    background: var(--color-text); border-radius: 2px;
    transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* モバイルナビドロワー */
.mobile-nav {
    display: none;
    position: fixed; top: 60px; left: 0; right: 0; bottom: 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    z-index: 99; overflow-y: auto;
    padding: 16px 0 32px;
}
.mobile-nav.open { display: block; }
.mobile-nav a {
    display: block; padding: 14px 24px;
    font-size: 1rem; font-weight: 500;
    color: var(--color-text); border-bottom: 1px solid var(--color-border);
    text-decoration: none;
}
.mobile-nav a:hover { background: var(--color-bg); color: var(--color-primary); }
.mobile-nav hr { border: none; border-top: 1px solid var(--color-border); margin: 8px 0; }
.mobile-nav .mobile-nav-user {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 24px; border-bottom: 1px solid var(--color-border);
    font-weight: 700;
}

/* ===================================================
   ボタン
   =================================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 6px; padding: 8px 18px; border-radius: var(--radius-sm);
    font-size: .9rem; font-weight: 600; cursor: pointer;
    border: none; transition: var(--transition); text-decoration: none;
    white-space: nowrap; -webkit-tap-highlight-color: transparent;
}
.btn-sm { padding: 5px 14px; font-size: .85rem; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-h); text-decoration: none; color: #fff; }
.btn-ghost {
    background: transparent; color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); text-decoration: none; }
.btn-danger { background: #ef4444; color: #fff; }
.btn-danger:hover { background: #dc2626; }

/* ===================================================
   ユーザーメニュー（デスクトップ）
   =================================================== */
.user-menu { position: relative; }
.user-menu-trigger {
    background: none; border: none; cursor: pointer; padding: 4px; display: flex;
    -webkit-tap-highlight-color: transparent;
}
.user-menu-dropdown {
    display: none; position: absolute; right: 0; top: calc(100% + 8px);
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-md); box-shadow: var(--shadow-md);
    min-width: 160px; overflow: hidden; z-index: 200;
}
.user-menu.open .user-menu-dropdown { display: block; }
.user-menu-dropdown a, .user-menu-dropdown hr {
    display: block; padding: 10px 16px;
    font-size: .88rem; color: var(--color-text);
    transition: var(--transition);
}
.user-menu-dropdown a:hover { background: var(--color-bg); text-decoration: none; }
.user-menu-dropdown hr { border: none; border-top: 1px solid var(--color-border); padding: 0; }

/* ===================================================
   アバター
   =================================================== */
.avatar { border-radius: 50%; object-fit: cover; background: var(--color-border); flex-shrink: 0; }
.avatar-sm  { width: 32px; height: 32px; }
.avatar-md  { width: 48px; height: 48px; }
.avatar-lg  { width: 80px; height: 80px; }

/* ===================================================
   メイン
   =================================================== */
.site-main { padding: 32px 0; flex: 1; }

/* ===================================================
   記事カード
   =================================================== */
.articles-grid { display: flex; flex-direction: column; gap: 0; }
.article-card {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 20px 24px;
    transition: var(--transition);
}
.article-card:first-child { border-top: 1px solid var(--color-border); border-radius: var(--radius-md) var(--radius-md) 0 0; }
.article-card:last-child  { border-radius: 0 0 var(--radius-md) var(--radius-md); }
.article-card:hover { background: #fafbff; }

.card-meta {
    display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
    margin-bottom: 8px; font-size: .82rem; color: var(--color-text-muted);
}
.card-meta .avatar { flex-shrink: 0; }
.card-title {
    font-size: 1.05rem; font-weight: 700;
    color: var(--color-text); line-height: 1.4;
    margin-bottom: 10px;
}
.card-title a:hover { color: var(--color-primary); text-decoration: none; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.card-footer {
    display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
    font-size: .82rem; color: var(--color-text-muted);
}
.card-footer .icon-count { display: flex; align-items: center; gap: 4px; }

/* ===================================================
   タグバッジ
   =================================================== */
.tag {
    display: inline-block; padding: 3px 10px;
    background: var(--color-tag-bg); color: var(--color-tag-text);
    border-radius: 999px; font-size: .78rem; font-weight: 600;
    transition: var(--transition);
}
.tag:hover { background: var(--color-primary); color: #fff; text-decoration: none; }

/* ===================================================
   2カラムレイアウト
   =================================================== */
.page-layout { display: grid; grid-template-columns: 1fr 280px; gap: 32px; align-items: start; }

/* ===================================================
   サイドバー
   =================================================== */
.sidebar-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 16px;
}
.sidebar-card h3 {
    font-size: .85rem; font-weight: 700;
    color: var(--color-text-muted); text-transform: uppercase;
    letter-spacing: .06em; margin-bottom: 12px;
}
.sidebar-tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* ===================================================
   記事詳細
   =================================================== */
.article-detail-header { margin-bottom: 32px; }
.article-detail-title { font-size: 1.8rem; font-weight: 800; line-height: 1.35; margin-bottom: 16px; }
.article-detail-meta {
    display: flex; align-items: center; flex-wrap: wrap; gap: 12px;
    font-size: .88rem; color: var(--color-text-muted);
}

.article-body {
    font-size: 1rem; line-height: 1.85;
    color: var(--color-text);
    overflow-wrap: break-word; word-break: break-word;
}
.article-body h1, .article-body h2, .article-body h3 {
    font-weight: 700; margin: 2em 0 .8em;
    padding-bottom: .3em; border-bottom: 1px solid var(--color-border);
}
.article-body h1 { font-size: 1.6rem; }
.article-body h2 { font-size: 1.35rem; }
.article-body h3 { font-size: 1.15rem; border: none; }
.article-body p  { margin: 1em 0; }
.article-body pre {
    background: #1e1e2e; color: #cdd6f4;
    border-radius: var(--radius-md); padding: 16px 20px;
    overflow-x: auto; margin: 1.5em 0;
    font-family: var(--font-mono); font-size: .85rem;
    -webkit-overflow-scrolling: touch;
}
.article-body code {
    font-family: var(--font-mono); font-size: .88em;
    background: #f0f2f7; padding: 2px 6px; border-radius: 4px;
    word-break: break-all;
}
.article-body pre code { background: none; padding: 0; font-size: inherit; color: inherit; word-break: normal; }
.article-body blockquote {
    border-left: 4px solid var(--color-primary);
    background: var(--color-tag-bg); padding: 12px 16px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 1.5em 0; color: var(--color-text-muted);
}
.article-body a { color: var(--color-primary); text-decoration: underline; }
.article-body ul, .article-body ol { padding-left: 1.5em; margin: 1em 0; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin: .4em 0; }
.article-body table {
    width: 100%; border-collapse: collapse; margin: 1.5em 0;
    font-size: .9rem; display: block; overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.article-body th, .article-body td {
    border: 1px solid var(--color-border);
    padding: 8px 12px; text-align: left; white-space: nowrap;
}
.article-body th { background: var(--color-bg); font-weight: 700; }

/* ===================================================
   いいねボタン
   =================================================== */
.like-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 24px; border-radius: 999px;
    border: 2px solid var(--color-border);
    background: var(--color-surface); color: var(--color-text-muted);
    font-size: .9rem; font-weight: 600; cursor: pointer; transition: var(--transition);
    min-height: 44px;
}
.like-btn:hover, .like-btn.liked {
    border-color: #ef4444; color: #ef4444; background: #fff5f5;
}

/* ===================================================
   エディター
   =================================================== */
.editor-layout {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 0; min-height: 60vh;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md); overflow: hidden;
}
.editor-pane, .preview-pane { padding: 24px; }
.editor-pane { border-right: 1px solid var(--color-border); }
.editor-pane label {
    display: block; font-size: .8rem; font-weight: 700;
    color: var(--color-text-muted); text-transform: uppercase; margin-bottom: 6px;
}
.editor-textarea {
    width: 100%; height: 100%; min-height: 50vh;
    border: none; outline: none; resize: none;
    font-family: var(--font-mono); font-size: .9rem; line-height: 1.7;
    color: var(--color-text);
}
.preview-pane { background: var(--color-bg); overflow-y: auto; }

/* ===================================================
   フォーム
   =================================================== */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 6px; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 10px 14px;
    border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    font-family: var(--font-sans); font-size: .95rem; color: var(--color-text);
    background: var(--color-surface); transition: var(--transition);
    min-height: 44px; /* タッチターゲット確保 */
    -webkit-appearance: none;
    appearance: none;
}
select.form-input { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7280' d='M1 1l5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none; border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 82, 204, .12);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-error { font-size: .82rem; color: #ef4444; margin-top: 4px; }

/* ===================================================
   認証ページ
   =================================================== */
.auth-page {
    display: flex; align-items: center; justify-content: center;
    min-height: calc(100vh - 60px); padding: 24px 0;
}
.auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 40px; width: 100%; max-width: 420px;
}
.auth-card h1 { font-size: 1.4rem; font-weight: 800; text-align: center; margin-bottom: 28px; }

/* ===================================================
   アラート
   =================================================== */
.alert {
    padding: 12px 16px; border-radius: var(--radius-sm);
    font-size: .9rem; margin-bottom: 16px;
}
.alert-error   { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.alert-info    { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }

/* ===================================================
   ページネーション
   =================================================== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 32px; flex-wrap: wrap; }
.pagination a, .pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: var(--radius-sm);
    font-size: .88rem; font-weight: 600;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted); background: var(--color-surface);
    transition: var(--transition);
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); text-decoration: none; }
.pagination .current { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ===================================================
   フッター
   =================================================== */
.site-footer {
    background: #2d2d2d;
    color: #ccc;
    padding: 32px 0 16px;
}
.footer-inner {
    display: grid;
    grid-template-columns: 220px repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}
.footer-brand { display: flex; flex-direction: column; gap: 8px; }
.footer-logo  { font-size: 1.4rem; font-weight: 800; color: #fff; }
.footer-tagline { font-size: .82rem; color: #999; line-height: 1.5; }
.footer-copy  { font-size: .78rem; color: #777; margin-top: auto; padding-top: 16px; }
.footer-col h4 { font-size: .8rem; font-weight: 700; color: #fff; margin-bottom: 12px; text-transform: uppercase; letter-spacing: .06em; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col ul li a { font-size: .82rem; color: #aaa; text-decoration: none; transition: color .15s; }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 16px;
    font-size: .78rem; color: #666;
    text-align: center;
}

/* ===================================================
   レスポンシブ — タブレット（〜900px）
   =================================================== */
@media (max-width: 900px) {
    .page-layout { grid-template-columns: 1fr 240px; gap: 20px; }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 24px; }
}

/* ===================================================
   レスポンシブ — モバイル（〜768px）
   =================================================== */
@media (max-width: 768px) {
    /* コンテナ余白を狭める */
    .container { padding: 0 16px; }

    /* サイトメイン */
    .site-main { padding: 20px 0; }

    /* ヘッダー：デスクトップ要素を隠す */
    .header-nav { display: none; }
    .header-actions .btn { display: none; } /* 「記事を書く」「ログイン」「登録」ボタン */
    .header-actions .user-menu { display: none; } /* デスクトップドロップダウンも非表示 */
    .hamburger { display: flex; }

    /* 2カラム → 1カラム */
    .page-layout { grid-template-columns: 1fr; gap: 20px; }
    .sidebar { order: 2; }

    /* 記事カード */
    .article-card { padding: 16px; }
    .card-title { font-size: 1rem; }

    /* 記事詳細 */
    .article-detail-title { font-size: 1.4rem; }

    /* エディター：分割解除 */
    .editor-layout { grid-template-columns: 1fr; min-height: auto; }
    .editor-pane { border-right: none; border-bottom: 1px solid var(--color-border); padding: 16px; }
    .preview-pane { padding: 16px; }

    /* 認証カード */
    .auth-card { padding: 28px 20px; margin: 0 4px; }

    /* フッター */
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 20px; }
    .footer-brand { grid-column: 1 / -1; }
}

/* ===================================================
   レスポンシブ — スマートフォン（〜480px）
   =================================================== */
@media (max-width: 480px) {
    html { font-size: 15px; }
    .container { padding: 0 12px; }

    /* ロゴ文字を短く */
    .logo-text { font-size: 1rem; }

    /* 記事カード */
    .article-card { padding: 14px 12px; }
    .card-title { font-size: .95rem; }
    .card-meta  { font-size: .78rem; }
    .card-footer { font-size: .78rem; gap: 10px; }

    /* 記事詳細 */
    .article-detail-title { font-size: 1.2rem; }
    .article-detail-meta { font-size: .82rem; gap: 8px; }
    .article-body { font-size: .95rem; }
    .article-body h1 { font-size: 1.3rem; }
    .article-body h2 { font-size: 1.1rem; }
    .article-body pre { padding: 12px 14px; font-size: .8rem; }

    /* 認証カード */
    .auth-page { padding: 16px 0; align-items: flex-start; }
    .auth-card { padding: 24px 16px; border-radius: var(--radius-md); }

    /* フォーム入力：フォントを16px以上にしてiOSの自動ズーム防止 */
    .form-input, .form-select, .form-textarea, input, select, textarea {
        font-size: 16px;
    }

    /* フッター */
    .footer-inner { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .site-footer { padding: 24px 0 12px; }

    /* ボタン タッチターゲット */
    .btn { min-height: 44px; }
    .btn-sm { min-height: 38px; }

    /* ページネーション */
    .pagination a, .pagination span { width: 36px; height: 36px; font-size: .8rem; }
}