:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #667085;
  --border: #d9dee8;
  --accent: #1d4ed8;
  --accent-hover: #1e40af;
  --accent-soft: #eff6ff;
  --accent-border: #bfdbfe;
  --success: #166534;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --warn: #9a3412;
  --warn-bg: #fff7ed;
  --warn-border: #fed7aa;
  --danger: #991b1b;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --school: #9a6700;
  --school-line: #f59e0b;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
  --radius-small: 12px;
  --content-width: 1280px;
  --reading-width: 820px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--bg);
  font-family: "Inter", Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-hover);
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select,
input[type="checkbox"],
input[type="date"],
input[type="month"] {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(29, 78, 216, 0.26);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  transform: translateY(-160%);
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: var(--accent);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner,
.footer-inner,
.wrap {
  width: min(100% - 36px, var(--content-width));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.brand-icon {
  width: 38.64px;
  height: 38.64px;
  border-radius: 12%;
}

.brand-wordmark {
  width: auto;
  height: 21px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  flex: 0 0 auto;
  padding: 0;
  border: 1px solid var(--border);
  color: #0b2850;
  background: #fff;
}

.nav-toggle:hover {
  border-color: #b7c0cf;
  background: var(--accent-soft);
}

.nav-toggle-icon {
  display: grid;
  width: 20px;
  gap: 4px;
}

.nav-toggle-icon span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 160ms ease, opacity 160ms ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.primary-nav ul,
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav a {
  display: inline-block;
  padding: 8px 2px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--accent);
}

.wrap {
  padding-block: 38px 64px;
}

.hero {
  margin-bottom: 24px;
}

h1,
h2,
h3,
h4 {
  color: var(--text);
  font-family: "Manrope", Arial, Helvetica, sans-serif;
  line-height: 1.2;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: -0.035em;
}

h2 {
  margin: 0 0 10px;
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  letter-spacing: -0.02em;
}

h3 {
  margin: 0;
  font-size: 1.0625rem;
}

h4 {
  margin: 0 0 6px;
  font-size: 1rem;
}

p {
  margin: 0;
}

.lead {
  max-width: 870px;
  color: var(--muted);
  font-size: 1.0625rem;
}

.home-page > .hero .lead {
  max-width: 1000px;
}

.card {
  margin-top: 18px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

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

#customPeriodFields {
  grid-column: 1 / -1;
}

.field label,
.group-title {
  display: block;
  margin-bottom: 7px;
  font-weight: 700;
}

.optional {
  color: var(--muted);
  font-weight: 400;
}

select,
input[type="month"],
input[type="date"],
input[type="number"],
input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  color: var(--text);
  background: #fff;
  font-size: 16px;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

select:hover,
input:hover,
textarea:hover {
  border-color: #b7c0cf;
}

.input-with-suffix {
  display: flex;
  max-width: 210px;
  align-items: center;
  gap: 9px;
}

.input-with-suffix input {
  width: 150px;
}

.input-with-suffix span {
  font-weight: 700;
}

.hint,
.meta-note {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.8125rem;
}

.field-error {
  display: none;
  margin-top: 7px;
  color: var(--danger);
  font-size: 0.875rem;
  font-weight: 700;
}

.field-error.is-visible {
  display: block;
}

[aria-invalid="true"] {
  border-color: var(--danger) !important;
  box-shadow: 0 0 0 3px rgba(153, 27, 27, 0.1);
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.check {
  display: flex !important;
  min-height: 46px;
  align-items: center;
  gap: 8px;
  margin: 0 !important;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: #fff;
  font-weight: 500 !important;
}

.check:has(input:checked) {
  border-color: #93c5fd;
  background: var(--accent-soft);
}

.check input {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  accent-color: var(--accent);
}

.section {
  margin-top: 24px;
}

.plain-fieldset {
  margin-inline: 0;
  padding: 0;
  border: 0;
}

button {
  border: 0;
  border-radius: var(--radius-small);
  font-weight: 700;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
}

.primary {
  width: 100%;
  margin-top: 24px;
  padding: 14px 18px;
  color: #fff;
  background: var(--accent);
  font-size: 0.9375rem;
}

.primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.secondary,
.action-btn,
.add-leave,
.remove-leave {
  padding: 10px 14px;
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
}

.secondary:hover,
.action-btn:hover,
.add-leave:hover,
.remove-leave:hover {
  border-color: #aeb8c8;
  background: #fafbfc;
}

.results[hidden] {
  display: none;
}

.period-nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}

.period-title {
  text-align: center;
}

.period-title strong {
  display: block;
  font-family: "Manrope", Arial, Helvetica, sans-serif;
  font-size: 1.25rem;
}

.period-title span {
  color: var(--muted);
  font-size: 0.8125rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
}

.metric-label {
  color: var(--muted);
  font-size: 0.8125rem;
}

.metric-value {
  margin-top: 4px;
  font-family: "Manrope", Arial, Helvetica, sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
}

.callout {
  margin-top: 14px;
  padding: 15px 16px;
  border: 1px solid var(--accent-border);
  border-radius: 14px;
  background: var(--accent-soft);
}

.callout.is-below {
  border-color: var(--warn-border);
  background: var(--warn-bg);
}

.callout.is-above {
  border-color: var(--success-border);
  background: var(--success-bg);
}

.callout strong {
  display: inline-block;
  margin-top: 2px;
  font-family: "Manrope", Arial, Helvetica, sans-serif;
  font-size: 1.25rem;
}

.requirement-status {
  margin-top: 4px;
  font-weight: 700;
}

.data-warning,
.form-message {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--warn-border);
  border-radius: var(--radius-small);
  color: var(--warn);
  background: var(--warn-bg);
  font-size: 0.875rem;
}

.form-message[hidden],
.data-warning[hidden] {
  display: none;
}

.breakdown {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.breakdown-card {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: #fff;
}

.breakdown-card .numbers {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.8125rem;
}

details {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: #fff;
}

summary {
  padding: 12px 14px;
  cursor: pointer;
  font-weight: 700;
}

.selected-list {
  display: grid;
  gap: 10px;
  padding: 0 14px 14px;
}

.selected-month {
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.selected-month:first-child {
  padding-top: 0;
  border-top: 0;
}

.selected-month strong {
  display: block;
  margin-bottom: 3px;
  font-size: 0.875rem;
}

.selected-month span {
  color: var(--muted);
  font-size: 0.8125rem;
}

.calendars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.month-card {
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
}

.month-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.month-title span {
  color: var(--muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.calendar-head,
.calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}

.calendar-head {
  color: var(--muted);
  font-size: 0.625rem;
  font-weight: 700;
  text-align: center;
}

.calendar {
  margin-top: 4px;
}

.day {
  position: relative;
  min-width: 0;
  min-height: 58px;
  overflow: hidden;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  background: #fff;
  font-size: 0.6875rem;
  text-align: left;
}

button.day {
  width: 100%;
  font-weight: 400;
}

.day.office {
  border-color: #93c5fd;
  background: var(--accent-soft);
}

.day.school-holiday {
  box-shadow: inset 0 -4px 0 var(--school-line);
}

.day.selectable:hover {
  transform: translateY(-1px);
  border-color: #60a5fa;
  box-shadow: 0 3px 10px rgba(15, 23, 42, 0.08);
}

.day.muted {
  color: #7b8492;
  background: #f9fafb;
}

.day-num {
  font-weight: 700;
}

.day-label {
  margin-top: 4px;
  overflow-wrap: anywhere;
  font-size: 0.5625rem;
  font-weight: 600;
  line-height: 1.15;
}

.school-label {
  margin-top: 3px;
  color: var(--school);
  font-size: 0.5rem;
  font-weight: 700;
  line-height: 1.1;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.8125rem;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-mark {
  display: inline-block;
  min-width: 40px;
  padding: 2px 7px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  background: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  text-align: center;
}

.legend-mark.office {
  border-color: #93c5fd;
  color: var(--accent);
  background: var(--accent-soft);
}

.legend-mark.school {
  border-bottom: 3px solid var(--school-line);
  color: var(--school);
}

.holiday-list {
  display: grid;
  gap: 5px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.8125rem;
}

.leave-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.leave-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: #fff;
}

.leave-row label {
  margin-bottom: 5px;
  font-size: 0.8125rem;
}

.add-leave {
  margin-top: 10px;
}

.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.reset-btn {
  padding: 10px 14px;
  border: 1px solid var(--danger-border);
  color: var(--danger);
  background: #fff;
}

.reset-btn:hover {
  background: var(--danger-bg);
}

.save-note,
.notice {
  color: var(--muted);
  font-size: 0.8125rem;
}

.save-note {
  margin-top: 10px;
}

.notice {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.content-page {
  max-width: var(--reading-width);
}

.content-page .card {
  padding: clamp(22px, 4vw, 36px);
}

.prose > * + * {
  margin-top: 16px;
}

.prose h2 {
  margin-top: 34px;
}

.prose > h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin-top: 24px;
}

.prose ul,
.prose ol {
  margin-block: 14px 0;
  padding-left: 24px;
}

.prose li + li {
  margin-top: 7px;
}

.prose .callout {
  margin-top: 24px;
}

.formula {
  overflow-x: auto;
  padding: 14px 16px;
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-small);
  background: var(--accent-soft);
  font-weight: 700;
  white-space: nowrap;
}

.step-list {
  counter-reset: steps;
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.step-list li {
  counter-increment: steps;
  position: relative;
  min-height: 44px;
  padding: 2px 0 0 56px;
}

.step-list li::before {
  content: counter(steps);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 50%;
  color: var(--accent);
  background: var(--accent-soft);
  font-family: "Manrope", Arial, Helvetica, sans-serif;
  font-weight: 800;
}

.faq details {
  margin-top: 10px;
}

.faq details p {
  padding: 0 14px 14px;
  color: var(--muted);
}

.email-address {
  display: inline-block;
  padding: 12px 15px;
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-small);
  color: #0b2850;
  background: var(--accent-soft);
  font-family: "Manrope", Arial, Helvetica, sans-serif;
  font-size: clamp(1rem, 3vw, 1.15rem);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.copy-email-row {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.copy-status {
  margin: 0;
  min-height: 1.35em;
  color: var(--success);
  font-size: 0.875rem;
  font-weight: 700;
}

.site-footer {
  padding-block: 28px;
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px 32px;
}

.footer-copy {
  color: var(--muted);
  font-size: 0.8125rem;
}

.footer-nav a {
  color: var(--muted);
  font-size: 0.8125rem;
}

.dialog {
  width: min(92vw, 480px);
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.24);
}

.dialog::backdrop {
  background: rgba(15, 23, 42, 0.56);
}

.dialog-body {
  padding: 24px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
}

.dialog .reset-btn {
  color: #fff;
  background: var(--danger);
}

.dialog .reset-btn:hover {
  background: #7f1d1d;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}

@media (max-width: 1000px) {
  .calendars,
  .breakdown {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .check-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .header-inner {
    position: relative;
    min-height: 68px;
    align-items: center;
    flex-direction: row;
    gap: 12px;
    padding-block: 11px;
  }

  .brand {
    gap: 8px;
    min-width: 0;
  }

  .brand-icon {
    display: block;
    width: 33.12px;
    height: 33.12px;
    flex: 0 0 auto;
    border-radius: 12%;
  }

  .brand-wordmark {
    width: min(235px, calc(100vw - 142px));
    height: auto;
    min-width: 0;
  }

  .navigation-ready .nav-toggle {
    display: grid;
    margin-left: auto;
  }

  .navigation-ready .primary-nav {
    position: absolute;
    top: 100%;
    right: -18px;
    left: -18px;
    display: none;
    width: auto;
    padding: 8px 18px 14px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: #fff;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.1);
  }

  .navigation-ready .primary-nav.is-open {
    display: block;
  }

  .primary-nav ul {
    align-items: stretch;
    flex-direction: column;
    gap: 0;
  }

  .primary-nav a {
    display: block;
    padding: 11px 2px;
    border-bottom: 1px solid var(--border);
  }

  .primary-nav li:last-child a {
    border-bottom: 0;
  }

  .grid,
  .metrics,
  .calendars,
  .breakdown {
    grid-template-columns: 1fr;
  }

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

  .leave-row {
    grid-template-columns: 1fr;
  }

  .period-nav {
    grid-template-columns: 1fr 1fr;
  }

  .period-title {
    grid-row: 1;
    grid-column: 1 / -1;
    text-align: left;
  }

  .secondary {
    width: 100%;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-nav {
    order: -1;
  }

  .day {
    min-height: 52px;
    padding: 4px;
  }

  .day-label {
    font-size: 0.5rem;
  }
}

@media (max-width: 430px) {
  .header-inner,
  .footer-inner,
  .wrap {
    width: min(100% - 24px, var(--content-width));
  }

  .wrap {
    padding-block: 28px 48px;
  }

  .card {
    padding: 18px;
    border-radius: 15px;
  }

  .navigation-ready .primary-nav {
    right: -12px;
    left: -12px;
    padding-inline: 12px;
  }

  .check-grid {
    grid-template-columns: 1fr;
  }

  .calendar-head,
  .calendar {
    gap: 3px;
  }

  .day {
    min-height: 48px;
  }

  .school-label {
    font-size: 0.45rem;
  }

  .dialog-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  @page {
    margin: 14mm;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 10pt;
  }

  .site-header,
  .site-footer,
  .calculator-form,
  .action-bar,
  .save-note,
  .notice,
  .period-nav button,
  .data-warning,
  .skip-link {
    display: none !important;
  }

  .wrap {
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .hero {
    margin-bottom: 10mm;
  }

  .card {
    margin-top: 8mm;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .results[hidden] {
    display: none !important;
  }

  .period-nav {
    display: block;
  }

  .period-title {
    text-align: left;
  }

  .metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .month-card,
  .metric,
  .callout,
  details {
    break-inside: avoid;
    box-shadow: none;
  }

  .day {
    min-height: 11mm;
  }

  details {
    display: block;
  }

  details summary {
    display: none;
  }

  details > * {
    display: block !important;
  }

  a {
    color: #000;
    text-decoration: none;
  }
}