:root {
  --color-page: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-soft: #f1f5f9;
  --color-border: #dbe3ef;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --color-heading: #0f172a;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-soft: #dbeafe;
  --color-success: #15803d;
  --color-warning: #b45309;
  --color-danger: #b91c1c;
  --color-info: #0369a1;

  --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.08);
  --radius-small: 0.5rem;
  --radius-medium: 0.85rem;
  --radius-large: 1.25rem;

  --space-xs: 0.35rem;
  --space-sm: 0.65rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  --touch-target: 48px;
  --content-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  font-size: 16px;
}

body {
  min-height: 100%;
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.12), transparent 32rem),
    var(--color-page);
  color: var(--color-text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

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

button {
  cursor: pointer;
}

img {
  max-width: 100%;
}

/* App shell */

.app-shell {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: var(--space-md);
}

.app-header {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.brand-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.brand-title {
  margin: 0;
  color: var(--color-heading);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
}

.brand-subtitle {
  margin: var(--space-xs) 0 0;
  color: var(--color-muted);
  font-size: 1rem;
}

.page-header {
  margin-bottom: var(--space-lg);
}

.page-title {
  margin: 0;
  color: var(--color-heading);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.1;
}

.page-description {
  max-width: 70ch;
  margin: var(--space-sm) 0 0;
  color: var(--color-muted);
}

/* Navigation */

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  text-decoration: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.05);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-heading);
  border-color: var(--color-primary);
  outline: none;
}

.nav-link.active {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* Cards and sections */

.grid {
  display: grid;
  gap: var(--space-md);
}

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

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

.card {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.card.compact {
  padding: var(--space-md);
}

.card-title {
  margin: 0 0 var(--space-sm);
  color: var(--color-heading);
  font-size: 1.2rem;
}

.card-text {
  margin: 0;
  color: var(--color-muted);
}

.dashboard-section {
  margin-bottom: var(--space-lg);
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.section-title {
  margin: 0;
  color: var(--color-heading);
  font-size: 1.35rem;
}

.section-kicker {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* Buttons */

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  text-decoration: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.button:hover,
.button:focus-visible {
  border-color: var(--color-primary);
  outline: none;
}

.button.primary {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--color-primary-dark);
}

.button.subtle {
  background: var(--color-surface-soft);
}

.button.danger {
  color: #ffffff;
  background: var(--color-danger);
  border-color: var(--color-danger);
}

/* Forms */

.form {
  display: grid;
  gap: var(--space-md);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.form-grid.align-start {
  align-items: start;
}

.form-subsection {
  display: grid;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
}

.compact-header {
  margin-bottom: 0;
}

.static-field {
  display: flex;
  align-items: center;
  min-height: var(--touch-target);
  margin: 0;
  padding: 0.75rem 0.9rem;
  color: var(--color-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.field {
  display: grid;
  gap: var(--space-xs);
}

.field-label {
  color: var(--color-heading);
  font-weight: 700;
}

.field-help {
  min-height: 1.35rem;
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.input,
.select,
.textarea {
  width: 100%;
  min-height: var(--touch-target);
  padding: 0.75rem 0.9rem;
  color: var(--color-text);
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.textarea {
  min-height: 8rem;
  resize: vertical;
}

.input:focus,
.select:focus,
.textarea:focus {
  border-color: var(--color-primary);
  outline: 3px solid var(--color-primary-soft);
}

/* Badges */

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.25rem 0.65rem;
  color: var(--color-text);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

.badge.info {
  color: var(--color-info);
  background: #e0f2fe;
  border-color: #bae6fd;
}

.badge.success {
  color: var(--color-success);
  background: #dcfce7;
  border-color: #bbf7d0;
}

.badge.warning {
  color: var(--color-warning);
  background: #fef3c7;
  border-color: #fde68a;
}

.badge.danger {
  color: var(--color-danger);
  background: #fee2e2;
  border-color: #fecaca;
}

/* Lists and tables */

.list {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

.list-item {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.list-item-title {
  margin: 0;
  color: var(--color-heading);
  font-weight: 800;
}

.list-item-meta {
  margin: var(--space-xs) 0 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.table-wrap {
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  color: var(--color-heading);
  background: var(--color-surface-soft);
}

.table tr:last-child td {
  border-bottom: 0;
}

/* Alerts and status messages */

.alert {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
}

.alert.info {
  color: var(--color-info);
  background: #e0f2fe;
  border-color: #bae6fd;
}

.alert.success {
  color: var(--color-success);
  background: #dcfce7;
  border-color: #bbf7d0;
}

.alert.warning {
  color: var(--color-warning);
  background: #fef3c7;
  border-color: #fde68a;
}

.alert.danger {
  color: var(--color-danger);
  background: #fee2e2;
  border-color: #fecaca;
}

.empty-state {
  padding: var(--space-lg);
  color: var(--color-muted);
  text-align: center;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-large);
}

/* Utility */

.hidden {
  display: none !important;
}

.muted {
  color: var(--color-muted);
}

.stack {
  display: grid;
  gap: var(--space-md);
}

.inline-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.status-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 999px;
  background: var(--color-muted);
}

.status-dot.good {
  background: var(--color-success);
}

.status-dot.warning {
  background: var(--color-warning);
}

.status-dot.danger {
  background: var(--color-danger);
}

/* Checkbox cards */

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  min-height: var(--touch-target);
  padding: var(--space-sm);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.checkbox-row input,
.checkbox-card input {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.15rem;
  accent-color: var(--color-primary);
}

.checkbox-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: var(--space-sm);
}

.checkbox-card {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: var(--touch-target);
  padding: var(--space-sm);
  font-weight: 700;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.checkbox-card:hover,
.checkbox-card:focus-within {
  border-color: var(--color-primary);
}

.block {
  display: block;
}

.event-list-item {
  display: grid;
  gap: var(--space-md);
}

.event-list-item-header {
  align-items: flex-start;
}

.event-actions {
  justify-content: flex-end;
}

.inline-edit-form {
  display: grid;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
}

/* Dashboard event cards */

.dashboard-event-card {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.dashboard-event-main {
  display: grid;
  gap: 0.15rem;
}

/* Calendar views */

.calendar-toolbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-md);
}

.calendar-toolbar .section-title {
  text-align: center;
}

.calendar-toolbar .section-kicker {
  text-align: center;
}

.calendar-view-buttons {
  justify-content: flex-end;
}

.calendar-month-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: var(--space-xs);
}

.calendar-weekday {
  padding: var(--space-sm);
  color: var(--color-heading);
  font-weight: 800;
  text-align: center;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
}

.calendar-day {
  display: grid;
  align-content: start;
  gap: var(--space-xs);
  min-height: 10rem;
  padding: var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.calendar-day.today,
.calendar-week-day.today {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.calendar-day.outside-month {
  background: var(--color-surface-soft);
  opacity: 0.75;
}

.calendar-day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs);
  color: var(--color-heading);
  font-weight: 800;
}

.calendar-day-events {
  display: grid;
  gap: var(--space-xs);
}

.calendar-event-pill {
  display: grid;
  gap: 0.1rem;
  padding: var(--space-sm);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-left: 0.35rem solid var(--color-primary);
  border-radius: var(--radius-small);
}

.calendar-event-pill.compact {
  padding: 0.45rem 0.55rem;
}

.calendar-event-title {
  margin: 0;
  color: var(--color-heading);
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1.25;
}

.calendar-event-meta {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.8rem;
  line-height: 1.25;
}

.calendar-empty-day {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.calendar-week-grid {
  display: grid;
  gap: var(--space-md);
}

.calendar-week-day {
  display: grid;
  gap: var(--space-md);
}

/* Responsive layout */

@media (max-width: 800px) {
  .app-shell {
    padding: var(--space-sm);
  }

  .brand-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid.two-column,
  .grid.three-column,
  .form-grid,
  .checkbox-card-grid {
    grid-template-columns: 1fr;
  }

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

  .calendar-toolbar .section-title,
  .calendar-toolbar .section-kicker {
    text-align: left;
  }

  .calendar-view-buttons {
    justify-content: flex-start;
  }

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

  .calendar-weekday {
    display: none;
  }

  .calendar-day {
    min-height: auto;
  }

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

  .nav-link {
    border-radius: var(--radius-medium);
  }
}

@media (min-width: 801px) and (max-width: 1100px) {
  .grid.three-column {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .primary-nav {
    grid-template-columns: 1fr;
  }

  .section-header,
  .inline-between {
    align-items: flex-start;
    flex-direction: column;
  }

  .button,
  .nav-link {
    width: 100%;
  }

  .card {
    padding: var(--space-md);
  }

  .page-title {
    font-size: 1.55rem;
  }

  .brand-title {
    font-size: 1.8rem;
  }
}

/* Email preview */
.email-preview-frame {
  margin-top: var(--space-md);
  overflow: hidden;
  background: var(--color-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
}

.email-text-preview {
  margin: var(--space-md) 0 0;
  padding: var(--space-md);
  overflow-x: auto;
  white-space: pre-wrap;
  color: var(--color-text);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}


.email-log-stack {
  margin-top: var(--space-md);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

/* Settings refinements */

.compact-checkbox-row {
  height: 100%;
}

.settings-card-actions {
  margin-top: var(--space-md);
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(100%, 440px);
}

.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.button.small {
  min-height: auto;
  padding: 7px 10px;
  font-size: 0.85rem;
}

.form-message {
  min-height: 1.4em;
  color: #475569;
  font-weight: 700;
}

.form-message.error {
  color: #dc2626;
}