/*
 * PALM interface foundation
 *
 * This layer intentionally sits after styles.css. The semantic tokens and
 * component states mirror concepts that can later become SwiftUI Color,
 * spacing, shape, ButtonStyle, and view-transition primitives.
 */

:root {
  color-scheme: light;

  /* Cross-platform semantic colors */
  --color-background-grouped: #f7f6fa;
  --color-background-primary: #ffffff;
  --color-background-secondary: #fbfafd;
  --color-label-primary: #272330;
  --color-label-secondary: #6f687b;
  --color-separator: #e8e4ed;
  --color-brand-accent: #6f4aa5;
  --color-brand-accent-pressed: #57357f;
  --color-brand-tint: #f1ecf7;
  --color-success: #28725b;
  --color-success-tint: #eaf6f1;
  --color-warning: #8a5a0a;
  --color-warning-tint: #fff5e3;
  --color-danger: #9b3f49;
  --color-danger-tint: #fff0f1;
  --color-info: #486b91;
  --color-info-tint: #edf4fb;

  /* Compatibility aliases used by the existing application */
  --canvas: var(--color-background-grouped);
  --surface: var(--color-background-primary);
  --surface-muted: var(--color-background-secondary);
  --surface-subtle: var(--color-background-secondary);
  --ink: var(--color-label-primary);
  --text: var(--color-label-primary);
  --muted: var(--color-label-secondary);
  --slate: var(--color-label-secondary);
  --line: var(--color-separator);
  --border: var(--color-separator);
  --soft: var(--color-brand-tint);
  --teal: var(--color-brand-accent);
  --teal-dark: var(--color-brand-accent-pressed);
  --teal-soft: var(--color-brand-tint);
  --blue: var(--color-info);
  --blue-soft: var(--color-info-tint);
  --amber: var(--color-warning);
  --amber-soft: var(--color-warning-tint);
  --success: var(--color-success);

  /* 4-point spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  /* Shared geometry and motion */
  --control-height: 44px;
  --radius-control: 12px;
  --radius-card: 18px;
  --radius-sheet: 24px;
  --radius: var(--radius-card);
  --shadow: 0 1px 2px rgba(39, 35, 48, 0.035), 0 10px 30px rgba(39, 35, 48, 0.045);
  --shadow-raised: 0 2px 5px rgba(39, 35, 48, 0.055), 0 16px 38px rgba(39, 35, 48, 0.08);
  --motion-fast: 150ms;
  --motion-standard: 220ms;
  --motion-curve: cubic-bezier(0.2, 0.8, 0.2, 1);
  --workspace-max: 1680px;
  --workspace-gutter: clamp(20px, 2.15vw, 42px);
}

html {
  background: var(--canvas);
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  line-height: 1.45;
  background:
    radial-gradient(circle at 78% -12%, rgba(111, 74, 165, 0.07), transparent 34rem),
    var(--canvas);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", Inter, "Avenir Next", "Segoe UI", sans-serif;
}

::selection {
  color: var(--ink);
  background: rgba(111, 74, 165, 0.2);
}

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}

button,
[role="button"] {
  touch-action: manipulation;
}

h1,
h2,
h3 {
  color: var(--ink);
  text-wrap: balance;
}

p,
li {
  text-wrap: pretty;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
dialog:focus-visible {
  outline: 3px solid rgba(111, 74, 165, 0.3);
  outline-offset: 3px;
}

/* Shared fields */

:where(.signin-form, .composer, .schedule-filter-row, .learning-request-form, .registration-tester-form, .test-lab-form, .survey-student-picker) :is(input, select, textarea),
.notification-search input {
  border-color: var(--line);
  border-radius: var(--radius-control);
  color: var(--ink);
  background: var(--surface);
  box-shadow: 0 1px 2px rgba(39, 35, 48, 0.025);
  transition:
    border-color var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease,
    background var(--motion-fast) ease;
}

:where(.signin-form, .composer, .schedule-filter-row, .learning-request-form, .registration-tester-form, .test-lab-form, .survey-student-picker) :is(input, select, textarea):hover,
.notification-search input:hover {
  border-color: #d7cede;
}

:where(.signin-form, .composer, .schedule-filter-row, .learning-request-form, .registration-tester-form, .test-lab-form, .survey-student-picker) :is(input, select, textarea):focus,
.notification-search input:focus {
  border-color: var(--teal);
  outline: none;
  box-shadow: 0 0 0 4px rgba(111, 74, 165, 0.12);
}

::placeholder {
  color: #9a94a3;
  opacity: 1;
}

/* Authentication and standalone pages */

.startup-gate,
.auth-gate {
  background:
    radial-gradient(circle at 50% 4%, rgba(111, 74, 165, 0.1), transparent 30rem),
    var(--canvas);
}

.startup-card,
.auth-card,
.signup-status-card,
.signup-form-card,
.legal-shell {
  border-radius: var(--radius-sheet);
}

.auth-card,
.signup-status-card,
.signup-form-card {
  border-color: rgba(82, 68, 101, 0.12);
  box-shadow: var(--shadow-raised);
}

.startup-card img,
.auth-card img {
  filter: drop-shadow(0 10px 24px rgba(74, 49, 111, 0.13));
}

.auth-card h1,
.signup-hero h1 {
  line-height: 1.14;
}

.auth-route-switcher,
.signup-route-switcher {
  border-radius: 14px;
  background: #efedf2;
}

.auth-choice-card,
.credential-warning,
.tutor-intake-fields {
  border-radius: 14px;
}

/* App shell */

.app-shell {
  grid-template-columns: clamp(220px, 15vw, 252px) minmax(0, 1fr);
}

.sidebar {
  padding: var(--space-5) var(--space-4) var(--space-4);
  border-color: rgba(82, 68, 101, 0.11);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 1px 0 0 rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
  scrollbar-gutter: stable;
}

.brand {
  margin: 0 0 var(--space-5);
  padding: var(--space-1) var(--space-3) var(--space-2);
}

.brand img {
  width: min(100%, 132px);
  filter: drop-shadow(0 9px 20px rgba(74, 49, 111, 0.12));
}

.navigation {
  gap: var(--space-1);
}

.nav-item {
  min-height: 48px;
  gap: var(--space-3);
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-size: 13.5px;
  font-weight: 620;
  transition:
    color var(--motion-fast) ease,
    border-color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    transform var(--motion-fast) var(--motion-curve);
}

.nav-item:hover {
  color: var(--teal-dark);
  background: rgba(111, 74, 165, 0.055);
}

.nav-item.active {
  border-color: rgba(111, 74, 165, 0.1);
  color: var(--teal-dark);
  background: var(--teal-soft);
  box-shadow: inset 3px 0 0 var(--teal);
}

.nav-item .icon,
.nav-item .icon svg {
  width: 20px;
  height: 20px;
}

.role-panel {
  padding: 13px;
  border-color: rgba(82, 68, 101, 0.12);
  border-radius: var(--radius-card);
  background: rgba(249, 248, 251, 0.92);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.role-toggle {
  gap: 3px;
  padding: 3px;
  border-radius: var(--radius-control);
  background: #eeebf1;
}

.role-toggle button {
  min-height: 38px;
  height: auto;
  border-radius: 9px;
  transition:
    color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease;
}

.role-toggle button.active {
  box-shadow: 0 1px 2px rgba(39, 35, 48, 0.07), 0 4px 12px rgba(39, 35, 48, 0.055);
}

.main-area {
  container-name: workspace;
  container-type: inline-size;
  max-width: var(--workspace-max);
  padding-top: clamp(24px, 2.4vw, 38px);
  padding-bottom: clamp(32px, 3.2vw, 52px);
}

.environment-banner {
  padding: 12px 15px;
  border-color: rgba(111, 74, 165, 0.18);
  border-radius: var(--radius-control);
  color: var(--teal-dark);
  background: rgba(241, 236, 247, 0.82);
  box-shadow: inset 3px 0 0 rgba(111, 74, 165, 0.55);
  line-height: 1.45;
}

.topbar {
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.topbar > div:first-child {
  flex: 1 1 320px;
  min-width: 0;
}

.topbar h1 {
  margin-bottom: 6px;
  font-size: 30px;
  font-weight: 760;
  line-height: 1.15;
}

.subtitle {
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.5;
}

.top-actions {
  flex: 0 1 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
}

.date-chip {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid rgba(82, 68, 101, 0.08);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.64);
  font-size: 12px;
}

.notification-button,
.avatar {
  width: var(--control-height);
  height: var(--control-height);
  flex: 0 0 var(--control-height);
}

.notification-button {
  border-color: rgba(82, 68, 101, 0.13);
  border-radius: var(--radius-control);
  box-shadow: 0 1px 2px rgba(39, 35, 48, 0.035);
  transition:
    color var(--motion-fast) ease,
    border-color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    transform var(--motion-fast) var(--motion-curve),
    box-shadow var(--motion-fast) ease;
}

.notification-button:hover {
  border-color: rgba(111, 74, 165, 0.3);
  color: var(--teal-dark);
  background: var(--teal-soft);
  box-shadow: 0 6px 18px rgba(39, 35, 48, 0.07);
}

.notification-button b,
.nav-count {
  background: var(--color-danger);
  box-shadow: 0 0 0 2px var(--surface);
}

.avatar {
  border-color: rgba(111, 74, 165, 0.12);
  color: var(--teal-dark);
  background: var(--teal-soft);
}

/* Buttons and segmented controls */

.primary-button,
.secondary-button,
.danger-button,
.text-button,
.segment,
.filter-tabs button {
  min-height: var(--control-height);
  border-radius: var(--radius-control);
  font-weight: 680;
  transition:
    color var(--motion-fast) ease,
    border-color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease,
    transform var(--motion-fast) var(--motion-curve),
    opacity var(--motion-fast) ease;
}

.primary-button {
  border-color: var(--teal);
  background: var(--teal);
  box-shadow: 0 1px 2px rgba(46, 29, 70, 0.16), 0 6px 16px rgba(111, 74, 165, 0.16);
}

.primary-button:hover:not(:disabled) {
  border-color: var(--teal-dark);
  background: var(--teal-dark);
  box-shadow: 0 2px 4px rgba(46, 29, 70, 0.16), 0 8px 20px rgba(87, 53, 127, 0.2);
}

.secondary-button {
  border-color: rgba(111, 74, 165, 0.22);
  color: var(--teal-dark);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 2px rgba(39, 35, 48, 0.035);
}

.secondary-button:hover:not(:disabled) {
  border-color: rgba(111, 74, 165, 0.38);
  background: var(--teal-soft);
}

.text-button {
  padding-inline: 10px;
  color: var(--teal-dark);
}

.text-button:hover:not(:disabled) {
  background: var(--teal-soft);
}

.danger-button {
  border-color: rgba(155, 63, 73, 0.25);
  color: var(--color-danger);
  background: var(--color-danger-tint);
}

.danger-button:hover:not(:disabled) {
  border-color: var(--color-danger);
  color: #ffffff;
  background: var(--color-danger);
}

.compact-button,
.notification-actions button {
  min-height: 38px;
}

.segmented-control,
.filter-tabs {
  gap: 3px;
  padding: 4px;
  border-color: rgba(82, 68, 101, 0.1);
  border-radius: 14px;
  background: #eeecf0;
}

.segment,
.filter-tabs button {
  min-height: 36px;
  border-radius: 10px;
}

.segment.active,
.filter-tabs button.active {
  color: var(--teal-dark);
  background: var(--surface);
  box-shadow: 0 1px 2px rgba(39, 35, 48, 0.06), 0 5px 14px rgba(39, 35, 48, 0.055);
}

button:active:not(:disabled),
[role="button"]:active {
  transform: scale(0.98);
}

/* Cards, summaries, and grouped lists */

.panel,
.metric {
  border-color: rgba(82, 68, 101, 0.11);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}

.panel {
  background: rgba(255, 255, 255, 0.94);
}

.metric {
  min-height: 108px;
  padding: 17px 18px;
  background: rgba(255, 255, 255, 0.9);
}

.metric:hover {
  border-color: rgba(111, 74, 165, 0.18);
  box-shadow: var(--shadow);
  transform: none;
}

.metric-label {
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  font-weight: 650;
}

.metric-icon {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  color: var(--teal-dark);
  background: var(--teal-soft);
}

.metric-value {
  margin-top: 13px;
  font-size: 30px;
  font-weight: 740;
  line-height: 1;
}

.panel-head {
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5) var(--space-4);
}

.panel-head h2 {
  font-size: 18px;
  font-weight: 720;
  line-height: 1.25;
}

.panel-head p {
  font-size: 12.5px;
  line-height: 1.5;
}

.dashboard-overview,
.dashboard-grid,
.lower-grid,
.help-workspace {
  gap: var(--space-4);
}

.dashboard-summary-card {
  height: 100%;
  padding: var(--space-5);
}

.dashboard-session-list,
.dashboard-message-list {
  gap: 6px;
}

.dashboard-session-row,
.dashboard-message-row {
  border-color: transparent;
  border-radius: 14px;
  background: transparent;
  transition:
    border-color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    transform var(--motion-fast) var(--motion-curve);
}

.dashboard-session-row + .dashboard-session-row,
.dashboard-message-row + .dashboard-message-row {
  box-shadow: inset 0 1px 0 var(--line);
}

.dashboard-session-row:hover,
.dashboard-message-row:hover {
  border-color: rgba(111, 74, 165, 0.12);
  background: var(--teal-soft);
}

.dashboard-session-date {
  min-width: 70px;
}

.dashboard-session-date b,
.dashboard-session-copy strong,
.dashboard-message-row strong {
  font-weight: 680;
}

.message-kind,
.pill,
.tag {
  border: 1px solid rgba(111, 74, 165, 0.09);
  border-radius: 999px;
  color: var(--teal-dark);
  background: var(--teal-soft);
}

.pill.waiting {
  border-color: rgba(138, 90, 10, 0.12);
  color: var(--color-warning);
  background: var(--color-warning-tint);
}

.pill.finished {
  border-color: rgba(72, 107, 145, 0.12);
  color: var(--color-info);
  background: var(--color-info-tint);
}

.message-thread,
.notification-stat,
.notification-settings-grid > div,
.notification-preference-card,
.phone-guide-card,
.registration-control-card,
.learning-request-card,
.feedback-task-card,
.tutor-session-card,
.student-survey-card,
.help-card {
  border-color: rgba(82, 68, 101, 0.1);
  border-radius: 16px;
  background: var(--surface-muted);
  box-shadow: none;
}

.message-thread,
.learning-request-card {
  padding: var(--space-4);
}

.message,
.notification {
  border-color: rgba(82, 68, 101, 0.09);
}

.program-thread {
  border-color: rgba(111, 74, 165, 0.16);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.78), var(--teal-soft));
}

.notification.unread {
  border-color: rgba(111, 74, 165, 0.12);
}

.notification-mark,
.announcement-mark,
.phone-guide-icon,
.help-card-icon {
  border-radius: 11px;
}

/* Schedule master-detail surface */

.week-calendar-head,
.detail-info {
  border-color: rgba(82, 68, 101, 0.09);
  border-radius: 14px;
  background: var(--surface-muted);
}

.week-day {
  border-color: rgba(82, 68, 101, 0.1);
  border-radius: 14px;
  overflow: hidden;
}

.week-day.today {
  border-color: rgba(111, 74, 165, 0.3);
  background: #faf7fd;
  box-shadow: inset 0 0 0 1px rgba(111, 74, 165, 0.06);
}

.week-session {
  border-color: transparent;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.74);
}

.week-session:hover,
.week-session.active {
  border-color: rgba(111, 74, 165, 0.22);
  background: var(--teal-soft);
}

.week-session.active {
  box-shadow: inset 0 0 0 1px rgba(111, 74, 165, 0.12);
}

.session-list {
  padding-inline: var(--space-3);
}

.session-card {
  margin-bottom: 4px;
  border-radius: 14px;
}

.session-card:hover {
  border-color: rgba(111, 74, 165, 0.13);
  background: var(--surface-muted);
  box-shadow: none;
}

.session-card.selected {
  border-color: rgba(111, 74, 165, 0.22);
  background: var(--teal-soft);
  box-shadow: inset 3px 0 0 var(--teal);
}

.calendar-block {
  border-color: rgba(82, 68, 101, 0.12);
  border-radius: 11px;
  box-shadow: 0 1px 2px rgba(39, 35, 48, 0.03);
}

.calendar-block strong {
  font-weight: 680;
}

.detail-panel {
  top: var(--space-5);
  border-radius: var(--radius-card);
  scrollbar-color: #d8d2df transparent;
}

.detail-panel:focus-visible {
  outline: 3px solid rgba(111, 74, 165, 0.28);
  outline-offset: 3px;
}

/* Dialogs and transient surfaces */

.session-dialog {
  border: 1px solid rgba(82, 68, 101, 0.12);
  border-radius: var(--radius-sheet);
  box-shadow: 0 28px 90px rgba(39, 35, 48, 0.24);
}

.session-dialog::backdrop {
  background: rgba(28, 23, 35, 0.36);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

.session-dialog[open] {
  animation: palm-dialog-in var(--motion-standard) var(--motion-curve);
}

.dialog-head {
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.toast {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(39, 35, 48, 0.94);
  box-shadow: 0 18px 50px rgba(18, 14, 22, 0.22);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: palm-toast-in var(--motion-standard) var(--motion-curve);
}

.main-area[data-active-view] > [data-view-section],
.main-area[data-active-view] > .dashboard-grid[data-view-section],
.main-area[data-active-view] > .lower-grid[data-view-section] {
  animation: palm-view-in var(--motion-standard) var(--motion-curve);
}

/* Fluid computer workspaces */

.startup-gate,
.auth-gate {
  overflow-y: auto;
  overscroll-behavior: contain;
}

:where(.message, .notification, .admin-user-main, .direct-message-bubble, .test-lab-stage, .test-lab-result-card, .feature-status-card, .owner-action-card) {
  min-width: 0;
}

:where(.message p, .notification p, .admin-user-main p, .direct-message-bubble p, .test-lab-exact-copy-note, .test-lab-result-card p, .feature-status-card p, .owner-action-card p, .owner-action-card small) {
  overflow-wrap: anywhere;
}

.student-survey-explorer,
.notification-ops-card-wide {
  grid-column: 1 / -1;
}

@media (min-width: 701px) {
  .metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .schedule-workspace {
    grid-template-columns: minmax(0, 1.6fr) minmax(310px, 0.72fr);
  }

  .week-calendar {
    grid-template-columns: repeat(7, minmax(96px, 1fr));
  }

  .direct-message-workspace {
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  }

  .direct-conversation {
    min-height: clamp(420px, 56vh, 640px);
  }

  .direct-message-list {
    max-height: clamp(360px, 44vh, 540px);
  }

  .direct-message-bubble {
    max-width: min(78%, 60ch);
  }

  .insight-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .notification-operations-grid,
  .feature-alert-channels,
  .feature-status-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }

  .push-checklist-grid,
  .qa-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)) !important;
  }

  .research-participant-list {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)) !important;
  }

  .admin-activity-list {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .notification-preference-grid {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  }

  .phone-notification-guide {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .notification-summary-strip,
  .feature-status-summary,
  .qa-summary-strip,
  .owner-action-summary,
  .request-summary-strip {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .test-lab-stepper button small {
    white-space: nowrap;
  }

  @container workspace (min-width: 820px) {
    .dashboard-overview {
      grid-template-columns: repeat(2, minmax(0, 1fr));
      align-items: stretch;
    }
  }

  @container workspace (max-width: 819px) {
    .metrics {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .dashboard-overview {
      grid-template-columns: 1fr;
    }
  }

  @container workspace (max-width: 899px) {
    .lower-grid {
      grid-template-columns: 1fr;
    }

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

    .insight-card-wide {
      grid-column: 1 / -1;
    }

    .admin-user-entry {
      grid-template-columns: minmax(0, 1fr) auto;
    }

    .admin-user-main {
      grid-column: 1 / -1;
    }

    .admin-user-metrics {
      grid-column: 1;
    }

    .admin-user-entry .application-actions {
      grid-column: 2;
      justify-self: end;
    }

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

    .test-lab-account-copy {
      grid-column: 1 / -1;
    }

    .test-lab-stepper {
      grid-template-columns: repeat(5, minmax(132px, 1fr));
      overflow-x: auto;
      scrollbar-width: thin;
    }

    .test-lab-workspace,
    .test-lab-results {
      grid-template-columns: 1fr;
    }

    .test-lab-progress {
      border-right: 0;
      border-bottom: 1px solid var(--line);
    }
  }

  @container workspace (max-width: 1100px) {
    .schedule-workspace {
      grid-template-columns: 1fr;
    }

    .detail-panel {
      position: static;
      max-height: none;
      overflow: visible;
      overscroll-behavior: auto;
    }

    .notification-toolbar {
      grid-template-columns: minmax(0, 1fr) auto;
    }

    #notification-status-filters {
      justify-self: start;
    }

    #notification-type-filters {
      grid-column: 1 / -1;
      max-width: 100%;
      flex-wrap: nowrap;
      overflow-x: auto;
      scrollbar-width: thin;
    }

    .notification-search {
      grid-column: 1;
    }

    #mark-displayed-read {
      grid-column: 2;
    }

    .learning-request-form {
      grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1.3fr) auto;
    }

    .learning-request-form > div:first-child {
      grid-column: 1 / -1;
    }

    .notification-ledger-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
    }

    .notification-ledger-row .notification-type-label {
      order: 0;
    }

    .notification-ledger-row strong {
      order: 1;
      flex: 1 1 240px;
    }

    .notification-ledger-row .pill {
      order: 2;
    }

    .notification-ledger-row p {
      order: 3;
      flex: 1 0 100%;
    }
  }

  @container workspace (max-width: 840px) {
    .notification-toolbar,
    .learning-request-form,
    .direct-message-workspace {
      grid-template-columns: 1fr;
    }

    .notification-toolbar > *,
    #notification-type-filters,
    .notification-search,
    #mark-displayed-read,
    .learning-request-form > div:first-child {
      grid-column: 1;
    }

    #mark-displayed-read {
      justify-self: start;
    }

    .direct-thread-list {
      max-height: 260px;
    }

    .direct-conversation {
      min-height: 420px;
    }

    .research-participant-list {
      grid-template-columns: 1fr !important;
    }
  }

  @container workspace (min-width: 1260px) {
    .help-grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .help-card-wide {
      grid-column: auto;
    }
  }
}

@keyframes palm-view-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes palm-dialog-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes palm-toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Medium layouts */

@media (max-width: 1480px) {
  #last-refreshed {
    display: none;
  }
}

@media (min-width: 901px) and (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 188px minmax(0, 1fr);
  }

  .sidebar {
    padding: 16px 12px 14px;
  }

  .sidebar > .brand img {
    width: 76px;
  }

  .sidebar .brand {
    margin-bottom: 14px;
  }

  .sidebar .nav-item,
  .sidebar .nav-item:not(.active) {
    justify-content: flex-start;
    gap: 10px;
    min-height: 44px;
    padding: 0 11px;
    font-size: 12.5px;
  }

  .sidebar .nav-item {
    border-radius: 13px;
  }

  .sidebar .nav-item.active {
    box-shadow: inset 3px 0 0 var(--teal);
  }

  .sidebar .nav-count {
    position: static;
    margin-left: auto;
  }

  .sidebar .role-panel {
    padding: 9px;
  }

  .sidebar .role-panel .label {
    margin-bottom: 8px;
    font-size: 10px;
  }

  .sidebar .role-panel .compact {
    font-size: 11px;
  }

  .sidebar .role-toggle {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 8px;
  }

  .sidebar .role-toggle button {
    min-height: 34px;
    padding-inline: 2px;
    overflow: hidden;
    font-size: 9.5px;
    text-overflow: ellipsis;
  }
}

@media (min-width: 701px) and (max-width: 900px) {
  .app-shell {
    grid-template-columns: 82px minmax(0, 1fr);
  }

  .sidebar {
    padding: 15px 11px 12px;
  }

  .sidebar .brand {
    margin-bottom: 16px;
    padding-inline: 2px;
  }

  .sidebar > .brand img {
    width: 56px;
  }

  .sidebar .nav-item,
  .sidebar .nav-item:not(.active) {
    justify-content: center;
    gap: 0;
    min-height: 47px;
    padding: 0;
    border-radius: 13px;
    font-size: 0;
  }

  .sidebar .nav-item.active {
    box-shadow: inset 3px 0 0 var(--teal);
  }

  .sidebar .nav-count {
    position: absolute;
    top: 5px;
    right: 7px;
    margin: 0;
    font-size: 9px;
  }

  .sidebar .role-panel {
    padding: 5px;
  }

  .sidebar .role-panel .label,
  .sidebar .role-panel .compact {
    display: none;
  }

  .sidebar .role-toggle {
    grid-template-columns: 1fr;
    margin: 0;
  }

  .sidebar .role-toggle button {
    min-height: 34px;
    font-size: 0;
  }

  .sidebar .role-toggle button::after {
    font-size: 10px;
    font-weight: 800;
  }

  .sidebar .role-toggle button[data-role="student"]::after {
    content: "S";
  }

  .sidebar .role-toggle button[data-role="tutor"]::after {
    content: "T";
  }

  .sidebar .role-toggle button[data-role="faculty"]::after {
    content: "F";
  }

  .sidebar .role-toggle button[data-role="founder"]::after {
    content: "A";
  }
}

@media (max-width: 900px) {
  .topbar {
    gap: var(--space-3);
  }

  .top-actions {
    justify-content: flex-start;
  }
}

@media (min-width: 701px) and (max-height: 800px) {
  .sidebar {
    padding-top: 12px;
    padding-bottom: 10px;
  }

  .sidebar .brand {
    margin-bottom: 8px;
  }

  .sidebar > .brand img {
    width: min(88px, 100%);
  }

  .sidebar .nav-item,
  .sidebar .nav-item:not(.active) {
    min-height: 42px;
  }

  .sidebar .role-panel {
    margin-top: 10px;
  }

  .sidebar .role-panel .compact {
    display: none;
  }

  .sidebar .role-toggle button {
    min-height: 30px;
  }
}

@media (max-height: 720px) {
  .startup-gate,
  .auth-gate {
    align-items: start;
  }

  .startup-card,
  .auth-card {
    margin-block: auto;
  }
}

/* Phone / hosted iOS wrapper */

@media (max-width: 700px) {
  .app-shell {
    padding-bottom: calc(74px + env(safe-area-inset-bottom));
  }

  .sidebar {
    height: calc(74px + env(safe-area-inset-bottom));
    padding:
      8px
      max(10px, env(safe-area-inset-right))
      max(8px, env(safe-area-inset-bottom))
      max(10px, env(safe-area-inset-left));
    border-color: rgba(82, 68, 101, 0.12);
    background: rgba(252, 251, 253, 0.91);
    box-shadow: 0 -8px 28px rgba(39, 35, 48, 0.07);
    backdrop-filter: blur(22px) saturate(145%);
    -webkit-backdrop-filter: blur(22px) saturate(145%);
  }

  .navigation {
    gap: 4px;
    scroll-padding-inline: 8px;
    scroll-snap-type: inline proximity;
  }

  .nav-item,
  .nav-item:not(.active) {
    flex-basis: clamp(72px, 22vw, 88px);
    min-height: 56px;
    height: 56px;
    gap: 2px;
    padding: 5px 3px;
    border-radius: 14px;
    font-size: 10.5px;
    font-weight: 650;
    scroll-snap-align: start;
  }

  .nav-item.active {
    border-color: rgba(111, 74, 165, 0.1);
    background: rgba(111, 74, 165, 0.1);
    box-shadow: none;
  }

  .nav-item .icon,
  .nav-item .icon svg {
    width: 21px;
    height: 21px;
  }

  .main-area {
    padding-top: max(18px, env(safe-area-inset-top));
    padding-right: max(14px, env(safe-area-inset-right));
    padding-bottom: 32px;
    padding-left: max(14px, env(safe-area-inset-left));
  }

  .environment-banner {
    margin-bottom: var(--space-4);
    padding: 11px 13px;
    font-size: 12px;
  }

  .topbar {
    gap: var(--space-3);
    margin-bottom: var(--space-5);
  }

  .topbar h1 {
    font-size: 26px;
    line-height: 1.12;
  }

  .top-actions {
    justify-content: flex-start;
  }

  .notification-button,
  .avatar {
    width: var(--control-height);
    height: var(--control-height);
    flex-basis: var(--control-height);
  }

  .mobile-role select {
    min-height: var(--control-height);
    max-width: 110px;
    padding-inline: 9px;
    border-radius: var(--radius-control);
    font-size: 16px;
  }

  .metrics {
    gap: var(--space-2);
    margin-bottom: var(--space-3);
  }

  .metric {
    min-height: 104px;
    padding: 14px;
    border-radius: 16px;
  }

  .metric-label {
    align-items: flex-start;
    font-size: 11px;
    line-height: 1.3;
  }

  .metric-icon {
    width: 26px;
    height: 26px;
    flex: 0 0 26px;
  }

  .metric-value {
    margin-top: 12px;
    font-size: 26px;
  }

  .panel,
  .dashboard-summary-card {
    border-radius: 17px;
  }

  .dashboard-summary-card {
    padding: var(--space-4);
  }

  .dashboard-summary-card .panel-head {
    margin-bottom: var(--space-3);
  }

  .panel-head {
    padding: var(--space-4) var(--space-4) var(--space-3);
  }

  .dashboard-session-row {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    padding: 12px 10px;
  }

  .dashboard-session-row > .pill {
    grid-column: 2;
    justify-self: start;
  }

  .dashboard-session-date {
    min-width: 62px;
  }

  .session-card {
    min-height: 76px;
    border-radius: 13px;
  }

  .primary-button,
  .secondary-button,
  .danger-button,
  .text-button,
  .segment,
  .filter-tabs button,
  .compact-button,
  .notification-actions button,
  .role-toggle button,
  .week-calendar-actions .secondary-button {
    min-height: var(--control-height);
  }

  :where(.signin-form, .composer, .schedule-filter-row, .learning-request-form, .registration-tester-form, .test-lab-form, .survey-student-picker) :is(input, select, textarea),
  .notification-search input {
    min-height: 48px;
    font-size: 16px;
  }

  textarea {
    line-height: 1.45;
  }

  .session-dialog {
    width: 100%;
    max-width: none;
    max-height: min(92dvh, calc(100dvh - env(safe-area-inset-top)));
    margin: auto 0 0;
    padding: 0;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: var(--radius-sheet) var(--radius-sheet) 0 0;
  }

  .session-dialog .session-form {
    padding: 0 16px max(18px, env(safe-area-inset-bottom));
  }

  .session-dialog[open] {
    animation-name: palm-sheet-in;
  }

  .session-dialog .dialog-head {
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 18px 0 12px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }

  .auth-gate,
  .startup-gate {
    padding:
      max(20px, env(safe-area-inset-top))
      max(16px, env(safe-area-inset-right))
      max(20px, env(safe-area-inset-bottom))
      max(16px, env(safe-area-inset-left));
  }

  .auth-card {
    padding: 26px 22px;
    border-radius: 22px;
  }

  .auth-card img {
    width: 82px;
    height: 82px;
  }

  .toast-region {
    bottom: calc(84px + env(safe-area-inset-bottom));
  }

  @keyframes palm-sheet-in {
    from {
      opacity: 0;
      transform: translateY(24px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (min-width: 350px) and (max-width: 400px) {
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (hover: hover) and (pointer: fine) {
  .week-calendar {
    padding-bottom: 20px;
    scrollbar-width: thin;
    scrollbar-color: rgba(111, 74, 165, 0.28) transparent;
  }

  .week-calendar::-webkit-scrollbar {
    display: block;
    height: 6px;
  }

  .week-calendar::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: rgba(111, 74, 165, 0.28);
  }

  .week-calendar::-webkit-scrollbar-track {
    background: transparent;
  }

  .primary-button:hover:not(:disabled),
  .secondary-button:hover:not(:disabled),
  .notification-button:hover,
  .avatar:hover,
  .dashboard-session-row:hover,
  .dashboard-message-row:hover,
  .week-session:hover,
  .session-card:hover {
    transform: translateY(-1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .main-area[data-active-view] > [data-view-section],
  .main-area[data-active-view] > .dashboard-grid[data-view-section],
  .main-area[data-active-view] > .lower-grid[data-view-section],
  .session-dialog[open],
  .toast {
    animation: none;
  }
}