/* ROMISEC アカウント（romisec.com のトップページと同じ色づかい） */
:root {
  --bg: #fbfaf8;
  --ink: #16152a;
  --muted: #5d6178;
  --line: #ebe8f2;
  --card: #fff;
  --violet: #6d5efc;
  --pink: #ec4899;
  --orange: #f59e0b;
  --mint: #10b981;
  --red: #d63a4a;
  --grad: linear-gradient(120deg, #6d5efc 0%, #ec4899 55%, #f59e0b 100%);
  --radius: 20px;
  --shadow: 0 1px 2px rgba(22, 21, 42, .04), 0 12px 32px rgba(22, 21, 42, .06);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(700px 420px at 0% 0%, #ece9ff, transparent 60%), radial-gradient(600px 400px at 100% 10%, #ffe6dc, transparent 60%), var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  line-height: 1.75;
}
a { color: var(--violet); }
.container { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.main { flex: 1; padding-top: 28px; padding-bottom: 48px; }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); line-height: 1.3; margin: 0 0 12px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.center { text-align: center; }

/* ヘッダー・フッター */
.site-header { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); background: rgba(251, 250, 248, .8); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 12px; flex-wrap: wrap; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 800; letter-spacing: .06em; }
.logo small { font-weight: 600; letter-spacing: 0; color: var(--muted); }
.logo-mark { width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center; background: var(--grad); color: #fff; font-weight: 800; }
.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a, .link-button { text-decoration: none; font-size: .9rem; font-weight: 600; color: var(--muted); padding: 8px 12px; border-radius: 999px; }
.nav a:hover, .link-button:hover { background: #fff; color: var(--ink); }
.nav a.btn { color: #fff; }
.link-button { background: none; border: 0; font-family: inherit; cursor: pointer; }
.inline { display: inline; margin: 0; }
.site-footer { border-top: 1px solid var(--line); padding: 20px 0 28px; font-size: .85rem; color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-inner nav { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-inner a { color: var(--muted); }
.footer-inner p { margin: 0; }

/* ボタン */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; font: inherit; font-weight: 700;
  padding: 12px 22px; border-radius: 999px; border: 0; cursor: pointer; background: var(--ink); color: #fff; transition: transform .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--violet); outline-offset: 2px; }
.btn-grad { background: var(--grad); color: #fff; box-shadow: 0 10px 24px rgba(236, 72, 153, .22); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn-danger { background: var(--red); color: #fff; }
.btn-small { padding: 8px 14px; font-size: .88rem; }
.btn-block { width: 100%; }

/* カード・フォーム */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; margin-bottom: 20px; }
.narrow { max-width: 520px; margin-left: auto; margin-right: auto; }
.page-title { margin-bottom: 20px; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: .92rem; }
.form input[type="email"], .form input[type="password"], .form input[type="text"], .form textarea, .search-row input {
  width: 100%; font: inherit; padding: 11px 14px; border: 1px solid #d9d5e6; border-radius: 12px; background: #fff; color: var(--ink);
}
.form .check { display: flex; align-items: flex-start; gap: 8px; font-weight: 400; }
.form .check input { margin-top: 6px; }
.more summary { cursor: pointer; font-weight: 600; font-size: .92rem; color: var(--violet); }
.more[open] { display: grid; gap: 12px; }
.flash { border-radius: 14px; padding: 12px 16px; margin-bottom: 16px; border: 1px solid var(--line); background: #fff; }
.flash-success { border-color: #b6e8d3; background: #effaf5; }
.flash-error { border-color: #f3c0c6; background: #fff1f3; }
.flash-info { border-color: #d4cffc; background: #f4f2ff; }
.status-box { border-radius: 14px; padding: 12px 16px; margin: 0 0 16px; background: #f4f2ff; }
.status-box p { margin: 0; }
.status-box.ok { background: #effaf5; }
.status-box.warn { background: #fff7e6; }

/* トップ（ログイン前） */
.hero { padding: 40px 0 24px; }
.hero h1 { font-size: clamp(2rem, 6vw, 3.2rem); }
.eyebrow { display: inline-block; margin: 0 0 12px; font-size: .8rem; font-weight: 700; color: var(--violet); letter-spacing: .06em; }
.lead { color: var(--muted); font-size: 1.05rem; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.plans ul { padding-left: 1.2em; margin: 8px 0; }
.card-accent { border-color: #d4cffc; background: linear-gradient(180deg, #faf9ff, #fff); }

/* 設定 */
.plan-card { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.plan-card h2 { font-size: 1.4rem; margin: 0; }
.plan-card .eyebrow { margin-bottom: 4px; }
.plan-card.is-student { border-color: #d4cffc; background: linear-gradient(120deg, #f6f4ff, #fff5fa); }
.plan-side { max-width: 360px; }
.plan-side p { margin: 0 0 10px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.grid-2 .card { margin-bottom: 0; }
.grid-2 + .card { margin-top: 20px; }
.service-list { margin: 0; padding-left: 1.2em; }
.danger-zone { border-color: #f3c0c6; }

/* 管理 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat { margin: 0; display: grid; }
.stat span { color: var(--muted); font-size: .85rem; }
.stat strong { font-size: 1.8rem; }
.request { border-top: 1px solid var(--line); padding: 12px 0; }
.inline-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.inline-actions form { margin: 0; }
.search-row { display: flex; gap: 8px; margin-bottom: 12px; }
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th, .table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }

/* 規約 */
.legal { max-width: 820px; margin-left: auto; margin-right: auto; }
.legal h2 { margin-top: 28px; }
.legal li { margin-bottom: 4px; }

.error-code { font-size: 3rem; font-weight: 800; margin: 0; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

@media (max-width: 560px) {
  .card { padding: 18px; }
  .header-inner { padding-top: 8px; padding-bottom: 8px; }
}

/* 二段階認証 */
.qr { width: 220px; max-width: 70vw; margin: 12px auto; background: #fff; padding: 8px; border: 1px solid var(--line); border-radius: 12px; }
.qr svg { display: block; width: 100%; height: auto; }
.secret { font-size: .95rem; letter-spacing: .04em; word-break: break-all; }
.steps { padding-left: 1.3em; }
.spaced { margin-top: 24px; }
.recovery-codes { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 12px 0 20px; }
.recovery-codes code { display: block; background: #f6f5fb; border-radius: 8px; padding: 6px 10px; font-size: 1rem; text-align: center; }

/* 代理ログイン中（管理者にだけ見える） */
.impersonation-bar { background: #2b1d54; color: #fff; font-size: .88rem; }
.impersonation-bar .container { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.impersonation-bar p { margin: 0; }
.impersonation-bar .btn { background: #fff; color: #2b1d54; }

/* 管理: 利用者の詳細 */
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.kv dt { color: var(--muted); font-size: .88rem; }
.kv dd { margin: 0; word-break: break-all; }
.log-list { list-style: none; padding: 0; margin: 0; font-size: .88rem; }
.log-list li { border-top: 1px solid var(--line); padding: 6px 0; display: grid; grid-template-columns: 150px 1fr; gap: 8px; }
.form select, .form input[type="date"] { width: 100%; font: inherit; padding: 10px 12px; border: 1px solid #d9d5e6; border-radius: 12px; background: #fff; }
.admin-nav { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
@media (max-width: 560px) { .log-list li { grid-template-columns: 1fr; gap: 0; } }
.search-row .btn { white-space: nowrap; }