:root {
  --brand: #c20e1a;
  --brand-strong: #8f0710;
  --brand-soft: #fff1f2;
  --ink: #201b1b;
  --muted: #6f6464;
  --line: #e8dddd;
  --page: #f7f5f4;
  --surface: #ffffff;
  --success: #1f7a4d;
  --warning: #a85434;
  --error: #8f0710;
  --radius: 10px;
  --shadow: 0 12px 32px rgba(30, 20, 20, 0.08);
  --focus: 0 0 0 3px rgba(194, 14, 26, 0.18);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.portal-shell {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 16px;
}

.portal-header,
.portal-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.portal-header {
  min-height: 72px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.portal-brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.portal-brand img {
  width: 54px;
  height: 54px;
  object-fit: contain;
  flex: 0 0 auto;
}

.portal-brand p,
.portal-brand h1,
.portal-brand span,
.portal-card h2,
.portal-card p {
  margin: 0;
}

.portal-brand p {
  color: var(--brand);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.portal-brand h1 {
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1.15;
}

.portal-brand span,
.portal-card p,
.field-help {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.portal-card {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.portal-section-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.portal-form,
.portal-search,
.availability-editor,
.availability-rules,
.availability-rule-card,
.availability-rule-form,
.free-text-section {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.portal-search {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
  min-width: 0;
}

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

input,
select,
textarea {
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

textarea {
  resize: vertical;
}

button {
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 850;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--brand);
  box-shadow: var(--focus);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.primary-button {
  background: var(--brand);
  color: #fff;
}

.secondary-button {
  border-color: var(--line);
  background: #fff;
  color: var(--brand-strong);
}

.portal-results {
  display: grid;
  gap: 8px;
}

.learner-result {
  width: 100%;
  padding: 12px;
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
  text-align: left;
  display: grid;
  gap: 3px;
}

.learner-result small,
.availability-rule-text {
  color: var(--muted);
  font-weight: 650;
}

.availability-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.badge {
  display: inline-flex;
  width: fit-content;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-size: 0.82rem;
  font-weight: 900;
}

.availability-rule-card,
.availability-rule-form {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.selected-learner-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(194, 14, 26, 0.16);
  border-radius: 8px;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-weight: 850;
}

.all-time-toggle {
  width: 100%;
  min-height: 76px;
  padding: 14px;
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
  text-align: left;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: center;
}

.all-time-toggle strong,
.all-time-toggle span:not(.all-time-switch) {
  grid-column: 2;
}

.all-time-toggle span:not(.all-time-switch) {
  color: var(--muted);
  font-weight: 650;
}

.all-time-toggle.is-active {
  border-color: rgba(31, 122, 77, 0.38);
  background: rgba(31, 122, 77, 0.08);
}

.all-time-switch {
  grid-row: 1 / span 2;
  width: 44px;
  height: 26px;
  border-radius: 999px;
  background: #d8d0d0;
  position: relative;
}

.all-time-switch::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: #fff;
  transition: transform 140ms ease;
}

.all-time-toggle.is-active .all-time-switch {
  background: var(--success);
}

.all-time-toggle.is-active .all-time-switch::after {
  transform: translateX(18px);
}

.availability-calendar {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.availability-calendar h3 {
  margin: 0;
  font-size: 1rem;
}

.calendar-toolbar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.calendar-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.calendar-controls button {
  min-width: 0;
  max-width: 100%;
}

.calendar-day-picker {
  display: none;
}

.calendar-agenda {
  --calendar-columns: 64px repeat(6, minmax(0, 1fr));
  --calendar-hour-height: 40px;
  min-width: 0;
  max-height: clamp(500px, calc(100dvh - 190px), 620px);
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
}

.calendar-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: var(--calendar-columns);
  min-width: 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.calendar-header-gutter {
  border-right: 1px solid var(--line);
}

.calendar-day-header {
  min-width: 0;
  padding: 10px 6px;
  border-left: 1px solid var(--line);
  text-align: center;
}

.calendar-day-name,
.calendar-day-date {
  display: block;
  line-height: 1.2;
}

.calendar-day-name {
  color: var(--brand-strong);
  font-weight: 900;
}

.calendar-day-date {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
}

.calendar-body {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
}

.calendar-time-column,
.calendar-days {
  position: relative;
  min-height: calc(var(--calendar-hour-height) * 12);
}

.calendar-time-column {
  border-right: 1px solid var(--line);
  background: #fff;
}

.calendar-hour-label {
  height: var(--calendar-hour-height);
  padding: 3px 8px 0 0;
  border-top: 1px solid rgba(45, 42, 42, 0.08);
  color: var(--muted);
  text-align: right;
  font-size: 0.76rem;
  font-weight: 750;
}

.calendar-hour-label.is-end {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: auto;
  padding: 0 8px 2px 0;
  border-top: 0;
  background: #fff;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  min-width: 0;
}

.calendar-day-column {
  position: relative;
  min-width: 0;
  min-height: calc(var(--calendar-hour-height) * 12);
  border-left: 1px solid var(--line);
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(45, 42, 42, 0.08) 0,
      rgba(45, 42, 42, 0.08) 1px,
      transparent 1px,
      transparent var(--calendar-hour-height)
    );
}

.calendar-agenda.is-all-time .calendar-day-column {
  background:
    linear-gradient(rgba(31, 122, 77, 0.08), rgba(31, 122, 77, 0.08)),
    repeating-linear-gradient(
      to bottom,
      rgba(31, 122, 77, 0.12) 0,
      rgba(31, 122, 77, 0.12) 1px,
      transparent 1px,
      transparent var(--calendar-hour-height)
    );
}

.calendar-day-background {
  position: absolute;
  inset: 0;
}

.calendar-slot {
  position: absolute;
  left: 0;
  right: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.calendar-slot:hover,
.calendar-slot:focus-visible {
  background: rgba(194, 14, 26, 0.06);
}

.availability-event {
  position: absolute;
  z-index: 2;
  min-height: 18px;
  overflow: hidden;
  padding: 6px 7px;
  border-color: rgba(31, 122, 77, 0.28);
  background: rgba(31, 122, 77, 0.16);
  color: #155f3a;
  text-align: left;
  font-size: 0.78rem;
  line-height: 1.25;
  white-space: normal;
  box-shadow: 0 5px 14px rgba(21, 95, 58, 0.12);
}

.availability-event strong,
.availability-event span,
.availability-event small {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.availability-event-all {
  inset: 8px;
  height: auto !important;
  width: auto !important;
  padding: 10px;
  border: 1px solid rgba(31, 122, 77, 0.22);
  border-radius: 10px;
  background: rgba(31, 122, 77, 0.12);
  font-weight: 900;
}

.rule-panel {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(18, 16, 16, 0.38);
}

.rule-panel[hidden] {
  display: none !important;
}

.rule-modal {
  width: min(560px, 100%);
  max-height: min(720px, calc(100vh - 36px));
  overflow-y: auto;
}

.rule-modal-card {
  padding: 18px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 18px 52px rgba(31, 24, 24, 0.24);
}

.rule-modal-card h3 {
  margin: 0 0 10px;
}

.availability-time-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.weekday-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.weekday-grid label,
.inline-check {
  position: relative;
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.weekday-grid label {
  justify-content: flex-start;
  min-height: 44px;
}

.weekday-grid input[type="checkbox"],
.inline-check input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 21px;
  inline-size: 21px !important;
  block-size: 21px !important;
  width: 21px !important;
  height: 21px !important;
  min-width: 21px !important;
  min-height: 21px !important;
  max-width: 21px !important;
  max-height: 21px !important;
  margin: 0;
  padding: 0;
  border: 2px solid #b9aeae;
  border-radius: 6px;
  background: #fff;
  box-sizing: border-box;
}

.weekday-grid input[type="checkbox"]:checked,
.inline-check input[type="checkbox"]:checked {
  border-color: var(--brand);
  background:
    linear-gradient(135deg, transparent 48%, #fff 48%, #fff 58%, transparent 58%),
    linear-gradient(45deg, transparent 38%, #fff 38%, #fff 48%, transparent 48%),
    var(--brand);
}

.weekday-grid label:has(input:checked),
.inline-check:has(input:checked) {
  border-color: rgba(194, 14, 26, 0.46);
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.weekday-grid input[type="checkbox"]:focus-visible,
.inline-check input[type="checkbox"]:focus-visible {
  outline: 3px solid rgba(194, 14, 26, 0.28);
  outline-offset: 2px;
}

.weekday-grid span,
.inline-check {
  font-weight: 800;
  line-height: 1.2;
}

.editor-actions,
.rule-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.portal-notification-region {
  position: fixed;
  right: 16px;
  top: 16px;
  z-index: 30;
  width: min(360px, calc(100vw - 32px));
}

.portal-notification {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
  color: var(--ink);
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 10px;
}

.portal-notification-error {
  border-left-color: var(--error);
}

.portal-notification-success {
  border-left-color: var(--success);
}

@media (max-width: 680px) {
  .portal-shell {
    padding: max(12px, env(safe-area-inset-top)) 12px max(18px, env(safe-area-inset-bottom));
  }

  .portal-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .portal-search,
  .availability-time-grid {
    grid-template-columns: 1fr;
  }

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

  .calendar-toolbar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .calendar-toolbar h3 {
    order: -1;
  }

  .calendar-day-picker {
    display: flex;
    gap: 8px;
    max-width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
    overscroll-behavior-inline: contain;
  }

  .calendar-day-tab {
    min-width: 86px;
    min-height: 44px;
    border-color: var(--line);
    background: #fff;
    color: var(--ink);
    font-size: 0.88rem;
    line-height: 1.25;
  }

  .calendar-day-tab.is-selected {
    border-color: var(--brand);
    background: var(--brand-soft);
    color: var(--brand-strong);
  }

  .calendar-header {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .calendar-day-header {
    display: none;
  }

  .calendar-day-header.is-selected {
    display: block;
  }

  .calendar-body {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .calendar-agenda {
    --calendar-hour-height: 38px;
    max-height: min(62vh, 560px);
  }

  .calendar-days {
    display: block;
  }

  .calendar-day-column {
    display: none;
  }

  .calendar-day-column.is-selected {
    display: block;
  }

  .calendar-hour-label {
    padding-right: 5px;
    font-size: 0.68rem;
  }

  .availability-event {
    font-size: 0.76rem;
    padding: 6px;
  }

  .rule-panel {
    align-items: end;
    padding: 0;
  }

  .rule-modal {
    width: 100%;
    max-height: min(88vh, 780px);
  }

  .rule-modal-card {
    border-radius: 18px 18px 0 0;
    padding: 16px 14px max(16px, env(safe-area-inset-bottom));
  }

  .selected-learner-summary {
    align-items: stretch;
    flex-direction: column;
  }

  .editor-actions,
  .rule-actions {
    flex-direction: column;
  }

  .editor-actions button,
  .rule-actions button,
  .portal-search button {
    width: 100%;
  }

  input,
  select,
  textarea {
    font-size: 17px !important;
    line-height: 1.25;
  }

  .portal-notification-region {
    top: auto;
    right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom));
    width: calc(100vw - 24px);
  }
}

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