:root {
  --bg: #f6f7f4;
  --panel: #ffffff;
  --text: #17231a;
  --muted: #526057;
  --green: #14552c;
  --green-soft: #e6f0e9;
  --border: #cfd8d2;
  --error: #8b1e1e;
  --success: #155a32;
  --shadow: 0 12px 30px rgba(23, 35, 26, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 18px;
  line-height: 1.5;
}

.page-shell {
  width: min(920px, calc(100% - 28px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.page-shell-wide {
  width: min(1180px, calc(100% - 28px));
}

.intro {
  margin-bottom: 22px;
}

.site-name {
  margin: 0 0 6px;
  color: var(--green);
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  color: var(--green);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 8px;
  font-size: 1.45rem;
  line-height: 1.2;
}

.form-panel,
.admin-summary,
.admin-group,
.admin-login {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.form-panel {
  padding: clamp(18px, 3vw, 32px);
}

.form-section {
  padding: 22px 0;
  border-top: 1px solid var(--border);
}

.form-section:first-of-type {
  border-top: 0;
  padding-top: 0;
}

label {
  display: block;
  margin: 18px 0 8px;
  font-weight: 700;
}

.label-help,
.hint,
.privacy-note {
  display: block;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 400;
}

.required {
  color: var(--error);
  font-size: 0.95rem;
  font-weight: 700;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input:not([type]),
textarea {
  width: 100%;
  border: 2px solid var(--border);
  border-radius: 6px;
  padding: 13px 14px;
  font: inherit;
  background: #fff;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
button:focus,
a:focus {
  outline: 4px solid #f5c64d;
  outline-offset: 2px;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  min-height: 54px;
  margin: 0;
  padding: 13px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  font-weight: 700;
}

.check-row small {
  display: block;
  margin-top: 5px;
  color: var(--error);
  font-size: 0.92rem;
  font-weight: 700;
}

.already-chosen {
  border-color: #d8b24d;
  background: #fff8e7;
}

.shared-warning {
  margin-top: 14px;
  border: 2px solid #d8b24d;
  border-radius: 6px;
  padding: 13px;
  background: #fff8e7;
  color: #5e4510;
  font-weight: 700;
}

.shared-choice {
  margin-top: 14px;
  background: var(--green-soft);
}

.check-row input {
  width: 25px;
  height: 25px;
  flex: 0 0 auto;
  margin-top: 2px;
  accent-color: var(--green);
}

.consent-section .check-row {
  background: var(--green-soft);
}

.primary-button,
.secondary-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 54px;
  border-radius: 6px;
  border: 2px solid var(--green);
  padding: 13px 20px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.primary-button {
  width: 100%;
  background: var(--green);
  color: #fff;
}

.secondary-button {
  background: #fff;
  color: var(--green);
  white-space: nowrap;
}

.message {
  margin-bottom: 18px;
  border-radius: 6px;
  padding: 14px 16px;
  font-weight: 700;
}

.message.success {
  border: 2px solid var(--success);
  background: #e8f3ec;
  color: var(--success);
}

.message.error {
  border: 2px solid var(--error);
  background: #f8e7e7;
  color: var(--error);
}

.admin-intro {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.admin-summary,
.admin-login {
  margin-bottom: 16px;
  padding: 16px 18px;
}

.admin-login-row,
.admin-summary {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.admin-login-row input {
  flex: 1 1 auto;
}

.admin-login label {
  margin-top: 0;
}

.admin-summary {
  justify-content: space-between;
}

.admin-groups {
  display: grid;
  gap: 12px;
}

.admin-group {
  overflow: hidden;
}

.admin-group summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  color: var(--green);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
}

.admin-group summary strong {
  min-width: 40px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green);
  text-align: center;
}

.empty-group {
  box-shadow: none;
}

.empty-group summary {
  color: var(--muted);
}

.volunteer-list {
  display: grid;
  gap: 10px;
  padding: 0 18px 18px;
}

.volunteer-card {
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.volunteer-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
  margin: 0;
}

dt {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.empty-text {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
}

@media (max-width: 720px) {
  body {
    font-size: 17px;
  }

  .page-shell {
    width: min(100% - 18px, 920px);
    padding-top: 18px;
  }

  .checkbox-grid,
  dl {
    grid-template-columns: 1fr;
  }

  .admin-intro {
    display: block;
  }

  .secondary-button,
  .admin-login-row,
  .admin-summary {
    width: 100%;
  }

  .admin-login-row,
  .admin-summary {
    display: grid;
  }

  .secondary-button {
    margin-top: 8px;
  }
}