:root {
  --ink: #102d3c;
  --ink-soft: #526873;
  --navy: #123c59;
  --blue: #197d9b;
  --cyan: #55c8d7;
  --ice: #e9f7f8;
  --paper: #fff;
  --mist: #f3f7f7;
  --line: #d6e0e2;
  --error: #b34036;
  --shadow: 0 24px 70px rgba(16, 45, 60, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
a { color: inherit; }
[hidden] { display: none !important; }

.hero {
  position: relative; overflow: hidden; min-height: 390px;
  color: #fff; background: linear-gradient(125deg,#123c59,#176b83);
}
.hero::before {
  content: ""; position: absolute; width: 520px; height: 520px; right: -100px; top: -260px;
  border: 1px solid rgba(255,255,255,.13); border-radius: 50%;
  box-shadow: 0 0 0 66px rgba(255,255,255,.03), 0 0 0 132px rgba(255,255,255,.02);
}
.hero-inner {
  position: relative; z-index: 1; max-width: 1180px; min-height: 390px; margin: auto; padding: 64px 28px 80px;
  display: grid; grid-template-columns: 1.2fr .8fr; align-items: start; gap: 68px;
}
.eyebrow, .aside-label {
  margin: 0 0 16px; color: var(--cyan); font-size: 13px; font-weight: 800; letter-spacing: .18em;
}
.event-title { margin:0; line-height:1.1; }
.event-title > a { display:grid; width:max-content; max-width:100%; gap:5px; color:#fff; text-decoration:none; }
.event-title > a:focus-visible { outline:2px solid var(--cyan); outline-offset:7px; }
.event-title > a > span { display:block; width:max-content; max-width:100%; white-space:nowrap; }
.event-title-cohost { color:rgba(255,255,255,.78); font-size:clamp(13px,1.35vw,18px); font-weight:650; letter-spacing:.04em; }
.event-title-main { font-size:clamp(27px,4.5vw,60px); letter-spacing:-.045em; }
.event-title-sub { font-size:clamp(20px,2.35vw,31px); letter-spacing:.02em; }
.event-card { padding: 0 0 4px 32px; border-left: 1px solid rgba(255,255,255,.26); display: grid; grid-template-columns: 130px 1fr; gap: 25px; }
.event-card > div { display: grid; align-content: start; }
.event-card small, .event-card dt { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.event-card strong { margin: 4px 0; font-size: 24px; }
.event-card > div > span { color: rgba(255,255,255,.65); font-size: 13px; letter-spacing: .15em; }
.event-card dl { margin: 0; display: grid; gap: 12px; }
.event-card dl div { display: grid; gap: 3px; }
.event-card dd { margin: 0; font-size: 14px; line-height: 1.55; }
.official-site-link {
  grid-column:1/-1; width:max-content; padding-bottom:4px; border-bottom:1px solid rgba(255,255,255,.6);
  color:#fff; font-size:13px; font-weight:700; text-decoration:none; white-space:nowrap;
}

.page-wrap { position: relative; z-index: 2; margin-top: -42px; padding: 0 28px 90px; }
.registration-shell {
  max-width: 1180px; margin: auto; background: var(--paper); border-radius: 4px; box-shadow: var(--shadow);
  display: grid; grid-template-columns: 310px minmax(0,1fr); overflow: hidden;
}
.registration-shell > aside { position: relative; padding: 52px 38px; background: #eff7f7; }
.registration-shell > aside::before { content:""; position:absolute; left:0; top:0; width:5px; height:88px; background:var(--cyan); }
.registration-shell > aside h2 { margin: 0; font-size: 27px; letter-spacing: -.04em; }
.aside-copy { margin: 18px 0 0; color: var(--ink-soft); font-size: 14px; line-height: 1.8; }
.steps { margin: 44px 0; padding: 0; list-style: none; display: grid; gap: 27px; }
.steps li { position: relative; color: #91a0a6; display: flex; align-items: center; gap: 13px; font-size: 14px; font-weight: 700; }
.steps li:not(:last-child)::after { content:""; position:absolute; width:1px; height:19px; top:29px; left:13px; background:#cfdddf; }
.steps li span { width:29px; height:29px; border:1px solid #c5d4d6; border-radius:50%; display:grid; place-items:center; font-size:11px; }
.steps li.active { color: var(--ink); }
.steps li.active span { color:#fff; background:var(--blue); border-color:var(--blue); }
.steps li.done { color:var(--blue); }
.steps li.done span { border-color:var(--blue); }
.aside-note { padding-top:22px; border-top:1px solid var(--line); display:grid; gap:7px; font-size:13px; }
.aside-note strong { color:var(--blue); font-size:12px; letter-spacing:.1em; }
.aside-note span:last-child { color:var(--ink-soft); }

.form-panel { min-width: 0; padding: 58px 64px 68px; }
.form-heading { margin-bottom: 42px; }
.form-heading > span { color:var(--blue); font-size:12px; font-weight:800; letter-spacing:.18em; }
.form-heading h2 { margin:9px 0 11px; font-size:29px; letter-spacing:-.035em; }
.form-heading p { margin:0; color:var(--ink-soft); font-size:14px; line-height:1.7; }
.required {
  display:inline-flex; margin-left:6px; padding:3px 6px; border-radius:2px; vertical-align:middle;
  color:#186d85; background:#e6f4f5; font-size:11px; font-style:normal; font-weight:800; line-height:1;
}
.field-section { min-width:0; margin:0; padding:33px 0; border:0; border-top:1px solid var(--line); }
.field-section legend { width:100%; padding:0; font-size:17px; font-weight:750; }
.field-section legend em, label span em { margin-left:8px; color:#7f9299; font-size:12px; font-style:normal; font-weight:500; }
.attendance-notice { margin:16px 0 0; color:var(--error); font-size:14px; font-weight:700; line-height:1.75; }
.choice-grid, .input-grid, .input-stack, .choice-list { margin-top:20px; }
.choice-grid, .input-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:13px; }
.choice-card {
  min-height:60px; padding:0 17px; border:1px solid var(--line); border-radius:3px;
  display:flex; align-items:center; gap:11px; cursor:pointer; transition:.16s ease;
}
.choice-card:has(input:checked) { border-color:var(--blue); background:var(--ice); }
.choice-card:hover { border-color:#83b9c6; transform:translateY(-1px); }
.choice-card input, .choice-list input, .consent input { width:18px; height:18px; margin:0; accent-color:var(--blue); }
.choice-card span { font-size:15px; font-weight:650; }
.input-grid label, .input-stack label, .conditional-input { display:grid; gap:8px; }
.input-grid label > span, .input-stack label > span, .conditional-input > span { color:var(--ink-soft); font-size:13px; font-weight:700; }
.followup { margin-top:20px; }
input:not([type=radio]):not([type=checkbox]), select, textarea {
  width:100%; min-height:51px; padding:0 13px; border:1px solid #c9d5d8; border-radius:2px;
  outline:0; background:#fff; color:var(--ink); font-size:15px; transition:.16s ease;
}
textarea { min-height:130px; padding-top:12px; padding-bottom:12px; line-height:1.7; resize:vertical; }
input::placeholder { color:#a4b2b7; }
input:focus, select:focus, textarea:focus { border-color:var(--blue); box-shadow:0 0 0 3px rgba(25,125,155,.12); }
.input-stack { display:grid; gap:18px; }
.choice-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px 20px; }
.choice-list label { min-height:29px; display:flex; align-items:flex-start; gap:9px; color:#2f4b59; cursor:pointer; font-size:14px; line-height:1.5; }
.choice-list input { flex:0 0 auto; margin-top:1px; }
.conditional-input { margin-top:18px; }
.privacy-section { margin-bottom:12px; padding:32px 26px; border:1px solid #cfe1e3; background:#f6fbfb; }
.privacy-section > p { margin:17px 0; color:var(--ink-soft); font-size:14px; line-height:1.8; }
.privacy-section a { margin:0 3px; color:var(--blue); text-underline-offset:3px; }
.registration-notes { margin:18px 0; padding-left:1.4em; color:var(--ink-soft); font-size:14px; line-height:1.85; }
.registration-notes li + li { margin-top:5px; }
.privacy-link-row strong { color:var(--ink); }
.consent { display:flex; align-items:center; gap:10px; cursor:pointer; font-size:15px; font-weight:700; }
.consent:has(input:disabled) { color:#82949b; cursor:not-allowed; }
.consent-hint { margin:10px 0 0 !important; color:#7b6260 !important; font-size:13px !important; }
.field-error { margin:8px 0 0; color:var(--error); font-size:13px; }
.error-summary { margin:-20px 0 28px; padding:13px 15px; border-left:3px solid var(--error); background:#fff3f1; color:#8e3029; font-size:14px; }
.honeypot { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
.primary-button, .secondary-button, .button-link {
  min-height:56px; padding:0 23px; border-radius:2px; display:inline-flex; align-items:center; justify-content:center;
  gap:30px; cursor:pointer; font-size:15px; font-weight:750; text-decoration:none; transition:.16s ease;
}
.primary-button { width:100%; border:0; background:var(--navy); color:#fff; box-shadow:0 10px 24px rgba(18,60,89,.18); }
.primary-button:hover:not(:disabled) { background:#0d334d; transform:translateY(-1px); }
.primary-button:disabled, button.submitting { cursor:wait; opacity:.65; }
.secondary-button { width:100%; border:1px solid var(--line); background:#fff; color:var(--ink); }
.button-row { margin-top:32px; display:grid; grid-template-columns:.75fr 1.25fr; gap:13px; }
.button-row form { margin:0; }
.confirmation-list { margin:0; border-top:1px solid var(--line); }
.confirmation-list div { padding:19px 0; border-bottom:1px solid var(--line); display:grid; grid-template-columns:160px 1fr; gap:20px; }
.confirmation-list dt { color:var(--ink-soft); font-size:13px; font-weight:650; }
.confirmation-list dd { margin:0; overflow-wrap:anywhere; font-size:15px; line-height:1.6; }
.complete-panel { max-width:600px; min-height:610px; margin:auto; padding:35px 0; text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.closed-panel { min-height:500px; padding:60px 20px; text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.closed-panel .eyebrow { color:var(--blue); }
.closed-panel h2 { margin:0 0 16px; font-size:28px; }
.closed-panel p { max-width:520px; margin:0; color:var(--ink-soft); font-size:13px; line-height:1.8; }
.complete-mark { width:64px; height:64px; margin-bottom:26px; border-radius:50%; background:var(--ice); color:var(--blue); display:grid; place-items:center; font-size:26px; font-weight:800; }
.complete-panel .eyebrow { margin-bottom:11px; color:var(--blue); }
.complete-panel h2 { margin:0 0 15px; font-size:29px; letter-spacing:-.04em; }
.complete-panel > p { margin:0; color:var(--ink-soft); font-size:15px; line-height:1.8; }
.registration-number { width:100%; margin:30px 0 21px; padding:20px; border:1px solid #cde2e4; background:#f3fafa; display:grid; gap:6px; }
.registration-number span { color:var(--ink-soft); font-size:10px; font-weight:700; letter-spacing:.1em; }
.registration-number strong { color:var(--navy); font-size:23px; letter-spacing:.06em; }
.event-reminder { width:100%; margin-top:30px; padding:20px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); display:grid; gap:7px; }
.event-reminder strong { font-size:15px; }
.event-reminder span { color:var(--ink-soft); font-size:13px; }
.text-button { margin-top:26px; padding:6px; border-bottom:1px solid #8fa3aa; color:var(--ink-soft); font-size:13px; text-decoration:none; }
.site-footer { min-height:140px; padding:34px max(28px,calc((100vw - 1124px)/2)); background:#0d2c3d; color:#fff; display:flex; align-items:center; justify-content:space-between; gap:26px; }
.site-footer div { display:grid; gap:5px; }
.site-footer strong { font-size:14px; }
.site-footer span, .site-footer a { color:rgba(255,255,255,.72); font-size:13px; }

/* Installer and admin */
.setup-body, .admin-body { background:#eef4f4; }
.setup-card, .login-card { width:min(680px,calc(100% - 32px)); margin:64px auto; padding:40px; background:#fff; box-shadow:var(--shadow); }
.setup-card h1, .login-card h1 { margin:0 0 10px; font-size:26px; }
.setup-card > p, .login-card > p { color:var(--ink-soft); font-size:13px; line-height:1.7; }
.setup-section { margin:28px 0; padding-top:25px; border-top:1px solid var(--line); }
.setup-section h2 { margin:0 0 16px; font-size:17px; }
.setup-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.setup-grid .wide { grid-column:1/-1; }
.notice-success { margin:20px 0; padding:18px; border-left:4px solid #2d9a73; background:#edf9f4; color:#216f55; font-size:13px; }
.notice-error { margin:20px 0; padding:18px; border-left:4px solid var(--error); background:#fff2f0; color:#8e3029; font-size:13px; }
.admin-header { min-height:68px; padding:0 32px; background:#102d3c; color:#fff; display:flex; align-items:center; justify-content:space-between; }
.admin-header > a { display:flex; align-items:baseline; gap:12px; text-decoration:none; }
.admin-header strong { font-size:18px; }
.admin-header span { color:rgba(255,255,255,.63); font-size:11px; }
.admin-header nav { display:flex; align-items:center; gap:20px; }
.admin-header nav > a { color:rgba(255,255,255,.82); font-size:11px; text-decoration:none; }
.admin-header nav > a:hover { color:#fff; text-decoration:underline; text-underline-offset:4px; }
.logout-form { margin:0; }
.logout-form button { padding:0; border:0; border-bottom:1px solid rgba(255,255,255,.5); background:transparent; color:#fff; cursor:pointer; font-size:11px; }
.admin-main { max-width:1280px; margin:auto; padding:42px 28px 70px; }
.admin-titlebar { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:28px; }
.admin-titlebar h1 { margin:0 0 5px; font-size:27px; }
.admin-titlebar p { margin:0; color:var(--ink-soft); font-size:12px; }
.button-link { min-height:45px; border:0; background:var(--navy); color:#fff; }
.admin-actions { display:flex; align-items:center; gap:10px; }
.secondary-link {
  min-height:45px; padding:0 20px; border:1px solid #bfcfd2; background:#fff; color:var(--ink);
  display:inline-flex; align-items:center; justify-content:center; text-decoration:none; font-size:12px; font-weight:700;
}
.status-badge { padding:9px 14px; border-radius:99px; font-size:11px; font-weight:800; }
.status-badge.is-open { background:#dff4eb; color:#1d7555; }
.status-badge.is-closed { background:#f8e7e4; color:#9b3d34; }
.settings-card { margin-bottom:22px; padding:28px; border:1px solid #dce6e7; background:#fff; }
.settings-card h2 { margin:0 0 20px; font-size:19px; }
.settings-card > p { color:var(--ink-soft); font-size:12px; line-height:1.75; }
.settings-subheading { margin:26px 0 14px; padding-bottom:9px; border-bottom:1px solid var(--line); font-size:14px; }
.toggle-setting {
  margin-bottom:24px; padding:17px; border:1px solid #d9e5e6; background:#f6fafa;
  display:flex; align-items:flex-start; gap:12px; cursor:pointer;
}
.toggle-setting input { width:19px; height:19px; margin:2px 0 0; accent-color:var(--blue); }
.toggle-setting span { display:grid; gap:4px; }
.toggle-setting strong { font-size:13px; }
.toggle-setting small { color:var(--ink-soft); font-size:11px; line-height:1.6; }
.settings-grid { margin-bottom:20px; display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.settings-grid label, .danger-card form > label { display:grid; gap:8px; }
.settings-grid label > span, .danger-card label > span { color:var(--ink-soft); font-size:11px; font-weight:700; }
.settings-grid em { margin-left:5px; color:#82949b; font-size:10px; font-style:normal; font-weight:500; }
.settings-grid .wide { grid-column:1/-1; }
.danger-card { border-color:#e6cbc7; }
.danger-card h2 { color:#8f332c; }
.danger-card form { max-width:520px; margin-top:20px; }
.danger-button {
  min-height:45px; margin-top:14px; padding:0 20px; border:0; background:#a23f36; color:#fff;
  cursor:pointer; font-size:12px; font-weight:750;
}
.stats-grid { margin-bottom:24px; display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.stat-card { padding:20px; background:#fff; border:1px solid #e0e8e9; }
.stat-card span { color:var(--ink-soft); font-size:11px; }
.stat-card strong { margin-top:7px; display:block; font-size:25px; }
.filters { margin-bottom:18px; padding:16px; background:#fff; display:grid; grid-template-columns:1fr 210px auto; gap:10px; }
.filters button { min-height:45px; padding:0 22px; border:0; background:var(--blue); color:#fff; cursor:pointer; }
.table-wrap { overflow:auto; background:#fff; border:1px solid #e0e8e9; }
.admin-table { width:100%; min-width:1000px; border-collapse:collapse; font-size:11px; }
.admin-table th { padding:13px 12px; background:#f1f6f6; color:var(--ink-soft); text-align:left; white-space:nowrap; }
.admin-table td { padding:14px 12px; border-top:1px solid #e5ebec; vertical-align:top; line-height:1.5; }
.admin-table tr:hover td { background:#f9fcfc; }
.mail-sent { color:#237a5c; }
.mail-failed { color:var(--error); }
.pagination { margin-top:20px; display:flex; justify-content:center; gap:6px; }
.pagination a, .pagination span { min-width:35px; height:35px; border:1px solid var(--line); background:#fff; display:grid; place-items:center; text-decoration:none; font-size:11px; }
.pagination span { background:var(--navy); color:#fff; border-color:var(--navy); }
.empty-state { padding:48px; text-align:center; color:var(--ink-soft); }

@media (max-width:900px) {
  .hero-inner { grid-template-columns:1fr; gap:35px; }
  .event-card { max-width:580px; }
  .registration-shell { grid-template-columns:1fr; }
  .registration-shell > aside { padding:34px 38px; }
  .steps { margin:26px 0; grid-template-columns:repeat(3,1fr); }
  .steps li:not(:last-child)::after { width:calc(100% - 35px); height:1px; top:13px; left:33px; }
  .stats-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:640px) {
  .hero-inner { min-height:auto; padding:52px 20px 75px; }
  .event-card { padding-left:0; border-left:0; grid-template-columns:110px 1fr; }
  .page-wrap { margin-top:-32px; padding:0 12px 60px; }
  .registration-shell > aside { padding:30px 22px; }
  .form-panel { padding:38px 21px 46px; }
  .form-heading h2 { font-size:25px; }
  .choice-grid, .input-grid, .choice-list, .button-row, .setup-grid, .filters { grid-template-columns:1fr; }
  .privacy-section { padding:26px 18px; }
  .confirmation-list div { grid-template-columns:1fr; gap:6px; }
  .button-row form:last-child { order:-1; }
  .site-footer { padding:31px 22px; align-items:flex-start; flex-direction:column; }
  .setup-card, .login-card { margin:24px auto; padding:26px 20px; }
  .admin-header { padding:0 18px; }
  .admin-header nav span { display:none; }
  .admin-main { padding:30px 14px 55px; }
  .admin-titlebar { align-items:flex-start; flex-direction:column; }
  .admin-actions { width:100%; align-items:stretch; flex-direction:column; }
  .admin-actions a { width:100%; }
  .stats-grid { grid-template-columns:1fr 1fr; gap:9px; }
  .settings-grid { grid-template-columns:1fr; }
  .settings-grid .wide { grid-column:auto; }
}
@media (prefers-reduced-motion:reduce) {
  *, *::before, *::after { scroll-behavior:auto !important; transition:none !important; }
}