:root {
  --blue-deep: #0d3d6e;
  --blue-mid: #1a5fa8;
  --blue-light: #e8f2fb;
  --blue-border: #b8d4ef;
  --text: #1a2b3c;
  --text-muted: #5a7088;
  --white: #ffffff;
  --notice-bg: #fff8e6;
  --notice-border: #e6c96a;
  --font: "M PLUS 1p", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: var(--white);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.brand {
  text-align: center;
  margin-bottom: 28px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 420px;
  min-height: 88px;
  margin: 0 auto 12px;
  padding: 18px 24px;
  border: 2px solid var(--blue-border);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--blue-light) 0%, var(--white) 100%);
  color: var(--blue-deep);
  font-size: clamp(18px, 4vw, 24px);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-sub {
  margin: 0;
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 0.12em;
}

.card {
  border: 1px solid var(--blue-border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 8px 28px rgba(13, 61, 110, 0.08);
}

.card-head {
  padding: 18px 24px;
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-mid) 100%);
  color: var(--white);
}

.card-head h1 {
  margin: 0;
  font-size: clamp(18px, 4.2vw, 22px);
  font-weight: 700;
  line-height: 1.55;
}

.card-body {
  padding: 28px 24px 32px;
}

.lead {
  margin: 0 0 24px;
  color: var(--text);
}

.notice {
  margin: 0 0 24px;
  padding: 18px 20px;
  border: 1px solid var(--notice-border);
  border-radius: 8px;
  background: var(--notice-bg);
}

.notice strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue-deep);
  font-size: 16px;
}

.notice p {
  margin: 0;
}

.notice a {
  color: var(--blue-mid);
  word-break: break-all;
}

.meta {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--blue-border);
  color: var(--text-muted);
  font-size: 13px;
}

.meta a {
  color: var(--blue-mid);
}

.nav-links {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
}

.nav-link {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--blue-border);
  border-radius: 8px;
  background: var(--blue-light);
  color: var(--blue-deep);
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  border-color: var(--blue-mid);
  background: #dceaf8;
}

.nav-link span {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 400;
}

.back-link {
  display: inline-block;
  margin-top: 24px;
  color: var(--blue-mid);
  font-size: 14px;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

/* ---------- Form ---------- */
.page--form {
  max-width: 760px;
}

.info-box {
  margin: 0 0 28px;
  padding: 20px 22px;
  border: 1px solid var(--blue-border);
  border-radius: 8px;
  background: var(--blue-light);
  font-size: 14px;
}

.info-box h2 {
  margin: 0 0 12px;
  color: var(--blue-deep);
  font-size: 16px;
  font-weight: 700;
}

.info-box h2 + h2,
.info-box ul + h2 {
  margin-top: 18px;
}

.info-box ul {
  margin: 0;
  padding-left: 1.2em;
}

.info-box li + li {
  margin-top: 6px;
}

.info-box a {
  color: var(--blue-mid);
}

.form-section {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--blue-border);
}

.form-section:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.form-section h2 {
  margin: 0 0 16px;
  color: var(--blue-deep);
  font-size: 17px;
  font-weight: 700;
}

.form-section p.help {
  margin: -8px 0 16px;
  color: var(--text-muted);
  font-size: 13px;
}

.form-grid {
  display: grid;
  gap: 16px;
}

.form-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-field label {
  display: block;
  margin-bottom: 6px;
  color: var(--blue-deep);
  font-size: 14px;
  font-weight: 600;
}

.form-field label .req {
  margin-left: 4px;
  color: #c0392b;
  font-size: 12px;
  font-weight: 700;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--blue-border);
  border-radius: 6px;
  background: var(--white);
  color: var(--text);
  font: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--blue-mid);
  box-shadow: 0 0 0 3px rgba(26, 95, 168, 0.15);
}

.form-field textarea {
  min-height: 96px;
  resize: vertical;
}

.count-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 88px 28px;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.count-row label {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.count-row input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--blue-border);
  border-radius: 6px;
  font: inherit;
  text-align: right;
}

.count-row .unit {
  color: var(--text-muted);
  font-size: 14px;
}

.total-box {
  margin: 24px 0 0;
  padding: 18px 20px;
  border: 2px solid var(--blue-mid);
  border-radius: 8px;
  background: var(--blue-light);
}

.total-box h3 {
  margin: 0 0 10px;
  color: var(--blue-deep);
  font-size: 15px;
}

.total-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
  font-size: 14px;
}

.total-row--grand {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--blue-border);
  font-size: 18px;
  font-weight: 700;
  color: var(--blue-deep);
}

.form-errors {
  display: none;
  margin: 0 0 20px;
  padding: 14px 16px;
  border: 1px solid #e8a0a0;
  border-radius: 8px;
  background: #fff5f5;
  color: #8b1e1e;
  font-size: 14px;
}

.form-errors.is-visible {
  display: block;
}

.form-errors ul {
  margin: 8px 0 0;
  padding-left: 1.2em;
}

.confirm-panel {
  display: none;
  margin-top: 24px;
  padding: 22px;
  border: 1px solid var(--blue-border);
  border-radius: 8px;
  background: #f8fbff;
}

.confirm-panel.is-visible {
  display: block;
}

.confirm-panel h2 {
  margin: 0 0 16px;
  color: var(--blue-deep);
  font-size: 17px;
}

.confirm-dl {
  margin: 0 0 20px;
}

.confirm-dl dt {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
}

.confirm-dl dd {
  margin: 4px 0 0;
  color: var(--text);
  font-size: 15px;
  white-space: pre-line;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-mid) 100%);
  color: var(--white);
}

.btn-primary:not(:disabled):hover {
  opacity: 0.92;
}

a.btn {
  text-decoration: none;
}

.apply-entry {
  margin: 28px 0 0;
  padding: 22px;
  border: 1px solid var(--blue-border);
  border-radius: 8px;
  background: var(--blue-light);
  text-align: center;
}

.apply-entry p {
  margin: 0 0 16px;
  color: var(--text);
  font-size: 14px;
}

.btn-secondary {
  background: var(--white);
  border: 1px solid var(--blue-border);
  color: var(--blue-deep);
}

.result-panel {
  display: none;
  margin-top: 24px;
  padding: 22px;
  border-radius: 8px;
}

.result-panel.is-visible {
  display: block;
}

.result-panel--success {
  border: 1px solid #8fd4a8;
  background: #f0faf4;
  color: #1e5c34;
}

.result-panel--error {
  border: 1px solid #e8a0a0;
  background: #fff5f5;
  color: #8b1e1e;
}

.char-count {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: right;
}

.input-panel.is-hidden {
  display: none;
}

.participant-list {
  display: grid;
  gap: 16px;
}

.participant-card {
  padding: 16px;
  border: 1px solid var(--blue-border);
  border-radius: 8px;
  background: #f8fbff;
}

.participant-card h3 {
  margin: 0 0 12px;
  color: var(--blue-deep);
  font-size: 14px;
  font-weight: 700;
}

.participant-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.participant-field--wide {
  grid-column: 1 / -1;
}

.participant-grid select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--blue-border);
  border-radius: 6px;
  background: var(--white);
  color: var(--text);
  font: inherit;
}

.participant-grid select:focus {
  outline: none;
  border-color: var(--blue-mid);
  box-shadow: 0 0 0 3px rgba(26, 95, 168, 0.15);
}

@media (max-width: 560px) {
  .participant-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .form-grid--2 {
    grid-template-columns: 1fr;
  }

  .count-row {
    grid-template-columns: 1fr 72px 24px;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .page {
    padding-top: 20px;
  }

  .card-body {
    padding: 22px 18px 26px;
  }
}