:root {
  --bg: #f0fdfa;
  --bg-strong: #dffaf5;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ecfffb;
  --line: #164e4a;
  --line-soft: #6ba59f;
  --text: #134e4a;
  --text-soft: #426764;
  --teal: #0d9488;
  --teal-soft: #ccfbf1;
  --teal-deep: #115e59;
  --orange: #f97316;
  --orange-soft: #fed7aa;
  --orange-deep: #9a3412;
  --slate-soft: #e2e8f0;
  --slate-ink: #64748b;
  --danger-soft: #fee4e2;
  --danger: #b42318;
  --today-ring: #0f766e;
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --transition-fast: 180ms ease;
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Fira Sans", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--orange-soft) 0 12%, transparent 12%),
    radial-gradient(circle at top right, #b8f3eb 0 18%, transparent 18%),
    linear-gradient(180deg, #fbfffe 0%, var(--bg) 52%, #e4fbf6 100%);
}

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

button {
  cursor: pointer;
}

a {
  color: var(--teal-deep);
}

code {
  font-family: "Fira Code", monospace;
  font-size: 0.92em;
}

.page-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px 20px 56px;
}

.hero,
.workspace-grid,
.stats-grid {
  display: grid;
  gap: 20px;
}

.hero {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  margin-bottom: 20px;
}

.workspace-grid {
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  align-items: start;
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 20px;
}

.section-card {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(8px);
}

.section-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13, 148, 136, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 148, 136, 0.07) 1px, transparent 1px);
  background-size: 18px 18px;
  opacity: 0.24;
  pointer-events: none;
}

.hero-copy,
.hero-panel,
.import-card,
.info-card,
.calendar-card,
.assignments-card,
.stat-card {
  padding: 24px;
}

.hero-copy {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(223, 250, 245, 0.96)),
    var(--surface);
}

.hero-panel {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(254, 215, 170, 0.42)),
    var(--surface);
}

.eyebrow {
  margin: 0 0 8px;
  font-family: "Fira Code", monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal-deep);
}

h1,
h2,
h3,
p {
  position: relative;
  z-index: 1;
}

h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.4rem, 4vw, 4.8rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  letter-spacing: -0.03em;
}

.hero-text,
.section-copy,
.hero-footnote-text,
.spotlight-meta,
.stat-copy,
.empty-copy,
.assignment-meta,
.assignment-notes,
.connection-meta {
  color: var(--text-soft);
}

.hero-text {
  max-width: 56ch;
  margin: 18px 0 0;
  font-size: 1.05rem;
  line-height: 1.55;
}

.hero-actions,
.form-actions,
.calendar-controls,
.filter-group,
.assignment-actions,
.hero-footnote,
.section-heading,
.section-heading.compact,
.calendar-heading,
.mini-legend {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

.hero-actions,
.form-actions,
.filter-group,
.assignment-actions,
.hero-footnote,
.mini-legend,
.auth-toggle-group,
.connection-actions {
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 24px;
}

.hero-footnote {
  margin-top: 18px;
}

.section-heading {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-heading.compact {
  align-items: flex-start;
}

.section-copy {
  margin: 0 0 18px;
  line-height: 1.5;
}

.button,
.filter-button {
  min-height: 44px;
  padding: 10px 16px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--text);
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.button:hover,
.filter-button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--teal);
  color: #f8fffd;
}

.button-secondary {
  background: var(--orange-soft);
  color: var(--orange-deep);
}

.button-ghost {
  min-height: 40px;
  padding-inline: 14px;
  background: rgba(255, 255, 255, 0.68);
}

.filter-button {
  min-height: 40px;
  background: rgba(255, 255, 255, 0.7);
}

.filter-button.is-active {
  background: var(--text);
  color: #f8fffd;
}

.inline-pill,
.status-pill,
.source-chip,
.metric-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border: 2px solid var(--line);
  border-radius: 999px;
  font-family: "Fira Code", monospace;
  font-size: 0.78rem;
  font-weight: 500;
}

.inline-pill,
.status-pill {
  background: rgba(255, 255, 255, 0.84);
}

.source-chip.canvas {
  background: var(--teal-soft);
  color: var(--teal-deep);
}

.source-chip.gradescope {
  background: var(--orange-soft);
  color: var(--orange-deep);
}

.stats-grid .section-card {
  min-height: 164px;
}

.stat-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(236, 255, 251, 0.88)),
    var(--surface);
}

.stat-card-value {
  font-family: "Fira Code", monospace;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 600;
}

.stat-copy {
  margin: 0;
  line-height: 1.4;
}

.import-column,
.board-column {
  display: grid;
  gap: 20px;
}

.import-form,
.field {
  position: relative;
  z-index: 1;
  display: grid;
}

.import-form {
  gap: 14px;
}

.field {
  gap: 8px;
}

.field span {
  font-size: 0.94rem;
  font-weight: 600;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  padding: 12px 14px;
  border: 2px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

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

.is-hidden {
  display: none;
}

.account-shell,
.account-summary,
.connection-list,
.connection-item,
.legal-copy {
  position: relative;
  z-index: 1;
}

.account-shell,
.account-summary,
.connection-list,
.legal-copy {
  display: grid;
  gap: 14px;
}

.compact-copy {
  margin: 0;
}

.auth-toggle-group {
  margin-bottom: 16px;
}

.connection-list {
  margin-top: 16px;
}

.connection-item {
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
}

.connection-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.connection-copy {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.45;
}

.compact-empty {
  padding: 18px;
}

.info-list,
.spotlight-list,
.assignment-list {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.info-list {
  display: grid;
  gap: 10px;
}

.info-list li {
  padding: 14px 16px;
  border: 2px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  line-height: 1.45;
}

.spotlight-list {
  display: grid;
  gap: 12px;
}

.spotlight-item {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border: 2px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
}

.spotlight-row,
.assignment-row,
.assignment-title-line,
.calendar-day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.spotlight-title,
.assignment-title {
  font-size: 1rem;
  font-weight: 600;
}

.spotlight-meta {
  font-size: 0.95rem;
}

.calendar-card {
  padding-bottom: 20px;
}

.calendar-heading {
  align-items: center;
}

.month-label {
  min-width: 180px;
  text-align: center;
  font-family: "Fira Code", monospace;
  font-size: 0.95rem;
  font-weight: 600;
}

.calendar-weekdays,
.calendar-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
}

.calendar-weekdays {
  margin-bottom: 10px;
  padding-inline: 4px;
  color: var(--text-soft);
  font-family: "Fira Code", monospace;
  font-size: 0.82rem;
}

.calendar-cell {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 148px;
  padding: 12px;
  border: 2px solid var(--line-soft);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
}

.calendar-cell.is-outside {
  opacity: 0.56;
}

.calendar-cell.is-today {
  border-color: var(--today-ring);
  background: rgba(204, 251, 241, 0.72);
}

.calendar-day-number {
  width: 34px;
  height: 34px;
  border: 2px solid var(--line);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Fira Code", monospace;
  font-size: 0.86rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.9);
}

.calendar-events {
  display: grid;
  gap: 6px;
}

.calendar-chip {
  padding: 7px 9px;
  border-radius: 12px;
  border: 2px solid transparent;
  font-size: 0.8rem;
  line-height: 1.25;
}

.calendar-chip.canvas {
  background: var(--teal-soft);
  color: var(--teal-deep);
  border-color: rgba(13, 148, 136, 0.3);
}

.calendar-chip.gradescope {
  background: var(--orange-soft);
  color: var(--orange-deep);
  border-color: rgba(249, 115, 22, 0.28);
}

.calendar-chip.is-complete {
  background: var(--slate-soft);
  color: var(--slate-ink);
  border-color: rgba(100, 116, 139, 0.28);
  text-decoration: line-through;
}

.calendar-more {
  padding: 6px 9px;
  border-radius: 12px;
  background: rgba(20, 20, 20, 0.06);
  color: var(--text-soft);
  font-size: 0.78rem;
}

.assignment-list {
  display: grid;
  gap: 14px;
}

.assignment-card {
  display: grid;
  gap: 14px;
  padding: 16px 18px;
  border: 2px solid var(--line-soft);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.assignment-card:hover {
  transform: translateY(-1px);
  border-color: var(--line);
}

.assignment-card.is-complete {
  border-color: #94a3b8;
  background: rgba(226, 232, 240, 0.92);
}

.assignment-card.is-complete .assignment-title,
.assignment-card.is-complete .assignment-meta,
.assignment-card.is-complete .assignment-notes {
  color: var(--slate-ink);
}

.assignment-card.is-complete .assignment-title {
  text-decoration: line-through;
}

.assignment-main {
  display: grid;
  gap: 10px;
}

.assignment-row {
  align-items: flex-start;
}

.assignment-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.assignment-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--teal);
}

.assignment-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  font-size: 0.95rem;
}

.assignment-notes {
  margin: 0;
  line-height: 1.45;
}

.remove-button {
  min-height: 40px;
  padding: 8px 12px;
  border: 2px solid var(--danger);
  border-radius: 999px;
  background: var(--danger-soft);
  color: var(--danger);
}

.empty-state {
  display: grid;
  gap: 12px;
  padding: 28px;
  border: 2px dashed var(--line-soft);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.56);
}

.empty-copy {
  margin: 0;
  line-height: 1.5;
}

.page-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
  padding: 20px 4px 0;
  color: var(--text-soft);
}

.page-footer a {
  font-family: "Fira Code", monospace;
  font-size: 0.84rem;
  text-decoration: none;
}

.legal-shell {
  max-width: 960px;
}

.legal-card {
  padding: 28px;
}

.legal-copy p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.6;
}

.toast-stack {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 20;
  display: grid;
  gap: 12px;
  max-width: min(360px, calc(100vw - 32px));
}

.toast {
  padding: 14px 16px;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid rgba(249, 115, 22, 0.55);
  outline-offset: 3px;
}

@media (max-width: 1120px) {
  .hero,
  .workspace-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .month-label {
    min-width: auto;
  }
}

@media (max-width: 760px) {
  .page-shell {
    padding-inline: 14px;
    padding-top: 20px;
  }

  .hero-copy,
  .hero-panel,
  .import-card,
  .info-card,
  .calendar-card,
  .assignments-card,
  .stat-card {
    padding: 18px;
  }

  h1 {
    max-width: none;
  }

  .section-heading,
  .calendar-heading,
  .calendar-controls,
  .assignment-row,
  .spotlight-row,
  .connection-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .calendar-weekdays {
    display: none;
  }

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

  .calendar-cell {
    min-height: 112px;
  }

  .assignment-checkbox {
    align-items: flex-start;
  }

  .toast-stack {
    left: 14px;
    right: 14px;
    max-width: none;
  }

  .page-footer {
    justify-content: flex-start;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}