:root {
  color-scheme: light;
  --page: #f5f7f1;
  --ink: #2a2a2a;
  --muted: #595959;
  --panel: #ffffff;
  --line: #dfe5d8;
  --field: #fbfcf8;
  --accent: #91bd5a;
  --accent-bright: #bada7a;
  --accent-dark: #507131;
  --accent-soft: #eaf5d3;
  --sun: #f9c733;
  --flower: #d94841;
  --warning: #a33d35;
  --focus: #507131;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Zen Maru Gothic", "Noto Sans JP", system-ui, sans-serif;
  background: var(--page);
  color: var(--ink);
}

.page-shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0;
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(0, 1.18fr);
  gap: 32px;
  align-items: start;
}

.intro-panel {
  position: sticky;
  top: 24px;
  min-height: calc(100vh - 80px);
  padding: 30px;
  border: 1px solid #ccdda9;
  border-radius: 8px;
  background: var(--accent-soft);
  overflow: hidden;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-character {
  width: 92px;
  height: 92px;
  flex: 0 0 auto;
  padding: 8px;
  border: 4px solid #fff;
  border-radius: 50%;
  background: #fff;
  object-fit: contain;
  box-shadow: 0 8px 22px rgba(80, 113, 49, 0.16);
}

.brand-name,
.brand-subtitle {
  margin: 0;
}

.brand-name {
  color: var(--accent-dark);
  font-size: 1rem;
  font-weight: 700;
}

.brand-subtitle {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.78rem;
}

.intro-copy {
  margin-top: 44px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 12em;
  font-size: 2.75rem;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 span {
  color: var(--accent-dark);
}

.lead {
  margin: 20px 0 0;
  max-width: 28rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.9;
}

.calendar-illustration {
  margin-top: 38px;
  width: min(100%, 330px);
  border: 1px solid #bdce9b;
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 24px rgba(80, 113, 49, 0.1);
  overflow: visible;
}

.calendar-header {
  position: relative;
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 7px 7px 0 0;
  background: var(--accent);
}

.calendar-header strong {
  color: #2e4420;
  font-size: 0.72rem;
  letter-spacing: 0;
}

.calendar-header i {
  position: absolute;
  top: -8px;
  width: 9px;
  height: 21px;
  border: 2px solid #fff;
  border-radius: 8px;
  background: var(--accent-dark);
}

.calendar-header i:first-child {
  left: 27%;
}

.calendar-header i:nth-child(2) {
  right: 27%;
}

.calendar-weekdays,
.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  align-items: center;
  text-align: center;
}

.calendar-weekdays {
  padding: 13px 12px 6px;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 700;
}

.calendar-days {
  padding: 2px 12px 14px;
}

.calendar-days span {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  justify-self: center;
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 700;
}

.calendar-days .active {
  border-radius: 50%;
  background: var(--flower);
  color: #fff;
  box-shadow: 0 3px 0 var(--sun);
}

.form-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(54, 75, 36, 0.08);
  overflow: hidden;
}

.form-heading {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 88px;
  gap: 20px;
  align-items: center;
  padding: 24px 28px 22px;
  border-bottom: 1px solid var(--line);
  background: #fbfcf8;
}

.form-heading::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 7px;
  height: 100%;
  background: var(--sun);
}

.form-heading p,
.form-heading h2,
.form-heading span {
  margin: 0;
}

.form-heading p {
  color: var(--accent-dark);
  font-size: 0.76rem;
  font-weight: 700;
}

.form-heading h2 {
  margin-top: 4px;
  font-size: 1.35rem;
  line-height: 1.45;
  letter-spacing: 0;
}

.form-heading span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.form-character {
  width: 88px;
  height: 88px;
  justify-self: end;
  border: 3px solid var(--accent-soft);
  border-radius: 50%;
  object-fit: cover;
}

form {
  padding: 28px;
}

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

.field-span-full {
  grid-column: 1 / -1;
}

label,
fieldset {
  display: block;
}

label span,
legend {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field);
  color: var(--ink);
  font: inherit;
  padding: 10px 12px;
}

textarea {
  resize: vertical;
  line-height: 1.7;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--focus);
  outline: 3px solid rgba(186, 218, 122, 0.4);
}

form > label {
  margin-top: 20px;
}

fieldset {
  margin: 24px 0 0;
  padding: 0;
  border: 0;
}

.date-picker-instructions {
  margin: 10px 0 12px;
  padding: 10px 12px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.8;
}

.date-picker-panel {
  margin-top: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcf8;
  overflow: hidden;
}

.date-picker-toolbar {
  min-height: 56px;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 40px;
  gap: 12px;
  align-items: center;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--accent-soft);
}

.date-picker-toolbar h3 {
  margin: 0;
  color: var(--accent-dark);
  font-size: 1rem;
  text-align: center;
}

.calendar-nav,
.clear-dates {
  display: grid;
  place-items: center;
  border: 1px solid #c4d4a4;
  border-radius: 50%;
  background: #fff;
  color: var(--accent-dark);
  font: inherit;
  cursor: pointer;
}

.calendar-nav {
  width: 40px;
  height: 40px;
  font-size: 1.55rem;
  line-height: 1;
}

.calendar-nav:hover,
.clear-dates:hover {
  border-color: var(--accent-dark);
  background: #f5faeb;
}

.calendar-nav:focus-visible,
.clear-dates:focus-visible,
.date-picker-day:focus-visible {
  outline: 3px solid rgba(249, 199, 51, 0.58);
  outline-offset: 2px;
}

.calendar-nav:disabled,
.clear-dates:disabled {
  cursor: default;
  opacity: 0.35;
}

.date-picker-weekdays,
.date-picker-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.date-picker-weekdays {
  padding: 14px 16px 5px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
}

.date-picker-grid {
  min-height: 294px;
  grid-template-rows: repeat(6, 42px);
  gap: 6px 4px;
  padding: 5px 16px 12px;
}

.date-picker-cell,
.date-picker-day {
  width: 42px;
  height: 42px;
}

.date-picker-cell {
  display: grid;
  place-items: center;
  justify-self: center;
}

.date-picker-day {
  position: relative;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
}

.date-picker-day:hover {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.date-picker-day.is-today::after {
  content: "";
  position: absolute;
  right: 8px;
  bottom: 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--flower);
}

.date-picker-day.is-selected {
  background: var(--accent-dark);
  color: #fff;
  box-shadow: 0 3px 0 var(--sun);
}

.date-picker-day.is-selected::after {
  background: #fff;
}

.date-picker-day:disabled {
  cursor: default;
  color: #b6bdb1;
}

.date-picker-day:disabled:hover {
  background: transparent;
}

.date-picker-footer {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  border-top: 1px solid var(--line);
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.clear-dates {
  width: 32px;
  height: 32px;
  font-size: 1.25rem;
}

.candidate-row {
  display: grid;
  grid-template-columns: 82px minmax(150px, 1fr) minmax(190px, 1fr);
  gap: 12px;
  align-items: end;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.candidate-label {
  min-height: 48px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 800;
  font-size: 0.84rem;
}

.selected-date output {
  width: 100%;
  min-height: 48px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--field);
  color: var(--muted);
  padding: 10px 12px;
}

.candidate-row.has-date .selected-date output {
  border-color: #c5d5a7;
  background: #f8fbed;
  color: var(--ink);
  font-weight: 700;
}

select:disabled {
  cursor: not-allowed;
  color: #9ba299;
  background: #f0f2ed;
  opacity: 1;
}

.candidate-row:first-of-type .candidate-label {
  background: var(--sun);
  color: #3c351b;
}

.form-actions {
  margin-top: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}

.status {
  min-height: 1.5em;
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.status[data-type="success"] {
  color: var(--accent-dark);
  font-weight: 700;
}

.status[data-type="error"] {
  color: var(--warning);
}

button[type="submit"] {
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--accent-dark);
  color: #fff;
  font: inherit;
  font-weight: 800;
  padding: 0 22px;
  cursor: pointer;
  transition:
    background 160ms ease,
    transform 160ms ease;
}

button[type="submit"]:hover {
  background: #3f5e25;
  transform: translateY(-1px);
}

button[type="submit"]:focus-visible {
  outline: 3px solid rgba(249, 199, 51, 0.6);
  outline-offset: 3px;
}

button[type="submit"]:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
}

.submit-arrow {
  color: var(--sun);
  font-size: 1.15rem;
}

@media (max-width: 860px) {
  .page-shell {
    grid-template-columns: 1fr;
    padding: 28px 0;
  }

  .intro-panel {
    position: static;
    min-height: auto;
    padding: 24px;
  }

  h1 {
    max-width: none;
    font-size: 2.45rem;
  }

  .intro-copy {
    margin-top: 28px;
  }
}

@media (max-width: 680px) {
  .page-shell {
    width: min(100% - 20px, 1120px);
  }

  form {
    padding: 18px;
  }

  .intro-panel {
    padding: 20px;
  }

  .brand-character {
    width: 72px;
    height: 72px;
    padding: 6px;
  }

  h1 {
    font-size: 2.05rem;
  }

  .lead {
    font-size: 0.9rem;
  }

  .calendar-illustration {
    margin-top: 26px;
  }

  .calendar-header {
    min-height: 38px;
  }

  .form-heading {
    grid-template-columns: minmax(0, 1fr) 68px;
    gap: 12px;
    padding: 20px 18px 18px;
  }

  .form-character {
    width: 68px;
    height: 68px;
  }

  .field-grid,
  .candidate-row,
  .form-actions {
    grid-template-columns: 1fr;
  }

  .date-picker-toolbar {
    grid-template-columns: 38px minmax(0, 1fr) 38px;
    padding-inline: 10px;
  }

  .calendar-nav {
    width: 38px;
    height: 38px;
  }

  .date-picker-weekdays {
    padding-inline: 8px;
  }

  .date-picker-grid {
    min-height: 266px;
    grid-template-rows: repeat(6, 38px);
    gap: 6px 0;
    padding-inline: 8px;
  }

  .date-picker-cell,
  .date-picker-day {
    width: 38px;
    height: 38px;
  }

  .candidate-row {
    gap: 10px;
  }

  .candidate-label {
    place-items: start;
    align-items: center;
    padding: 0 12px;
  }

  .form-actions {
    gap: 10px;
  }

  button[type="submit"] {
    width: 100%;
  }
}