:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --ink: #1b2430;
  --muted: #5a6472;
  --primary: #005f73;
  --primary-2: #0a9396;
  --danger: #b3261e;
  --ok: #245501;
  --focus: #f77f00;
  --border: #d4d9e2;
  --shadow: 0 10px 24px rgba(11, 31, 54, 0.08);
  --max-w: 960px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #d9f0f5, var(--bg) 40%);
}

body {
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 999;
  background: #fff;
  padding: 0.6rem 0.9rem;
  border: 2px solid var(--focus);
  border-radius: 0.3rem;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.site-header,
.site-footer {
  padding: 1rem 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
}

.site-header > *,
.site-footer > * {
  max-width: var(--max-w);
  margin-inline: auto;
}

.site-header h1 {
  margin: 0;
  font-size: 1.35rem;
}

.nav-list {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.nav-list a {
  color: #fff;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.35rem 0.5rem;
  border-radius: 0.25rem;
}

main {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 1.5rem 1rem;
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
}

.reveal {
  animation: fadeIn 500ms ease both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stats-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 1fr;
}

.stat-card {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.7rem;
  background: #fbfcff;
}

.stat-card h3 {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}

.stat-card p {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.chart-wrap {
  margin-top: 0.8rem;
}

.trend-chart {
  min-height: 120px;
  border: 1px dashed var(--border);
  border-radius: 0.5rem;
  padding: 0.5rem;
  display: flex;
  align-items: end;
  gap: 0.4rem;
}

.bar {
  flex: 1;
  min-width: 18px;
  background: linear-gradient(180deg, var(--primary-2), var(--primary));
  border-radius: 0.25rem 0.25rem 0 0;
  position: relative;
  transition: height 220ms ease;
}

.bar::after {
  content: attr(data-day);
  position: absolute;
  bottom: -1.2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--muted);
}

.controls,
.field,
.form-actions,
.settings-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.controls {
  margin-bottom: 1rem;
}

.inline-check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  padding: 0.5rem;
}

button,
.file-label {
  border: none;
  border-radius: 0.45rem;
  background: var(--primary);
  color: #fff;
  padding: 0.52rem 0.75rem;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

button:hover,
.file-label:hover {
  background: #004857;
}

button.secondary {
  background: #6b7280;
}

button.danger {
  background: var(--danger);
}

button.small {
  padding: 0.35rem 0.5rem;
  font-size: 0.9rem;
}

.status-msg {
  min-height: 1.2rem;
  color: var(--muted);
}

.field-error {
  min-height: 1.2rem;
  margin: 0;
  color: var(--danger);
  font-size: 0.9rem;
}

.table-wrap {
  overflow: auto;
}

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

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem;
  text-align: left;
  vertical-align: top;
}

.actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.cards {
  display: grid;
  gap: 0.7rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 0.7rem;
  background: #fbfcff;
}

.card h3 {
  margin-top: 0;
}

.card p {
  margin: 0.2rem 0;
}

mark {
  background: #ffe6a7;
  color: inherit;
  padding: 0.05em 0.1em;
}

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

.mobile-only {
  display: block;
}

.desktop-only {
  display: none;
}

#import-json-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

@media (min-width: 360px) {
  .site-header h1 {
    font-size: 1.5rem;
  }
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #record-form,
  #settings-form {
    display: grid;
    gap: 0.7rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #record-form .form-actions,
  #settings-form .form-actions,
  #settings-form fieldset {
    grid-column: 1 / -1;
  }

  .mobile-only {
    display: none;
  }

  .desktop-only {
    display: block;
  }
}

@media (min-width: 1024px) {
  main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #records,
  #settings {
    grid-column: 1 / -1;
  }

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