:root {
  color-scheme: light dark;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background-color: #f1f5f9;
  color: #0b2d5c;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.sheet-open {
  overflow: hidden;
}

.app-header {
  background: linear-gradient(135deg, #2a6f97, #014f86);
  color: #fff;
  padding: 1.5rem 1rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.app-header h1 {
  margin: 0;
  font-size: 1.5rem;
}

main {
  flex: 1;
  padding: 1.5rem 1rem 2rem;
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.tab-bar {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  background-color: rgba(1, 79, 134, 0.1);
  margin: 0 1rem;
  border-radius: 999px;
}

.tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0.75rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 1rem;
  color: inherit;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.tab.active {
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.tab-panel {
  display: none;
  animation: fade-in 0.2s ease;
}

.tab-panel.active {
  display: block;
}

.daily-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.daily-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: rgba(11, 45, 92, 0.75);
}

.daily-title {
  margin: 0.25rem 0 0;
  font-size: 1.75rem;
}

.ghost {
  background: transparent;
  border: 1px solid rgba(11, 45, 92, 0.2);
  color: inherit;
  border-radius: 999px;
  padding: 0.5rem 1.25rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.ghost:hover,
.ghost:focus-visible {
  border-color: rgba(42, 111, 151, 0.8);
  background-color: rgba(42, 111, 151, 0.08);
}

.metrics-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.metric-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(233, 245, 255, 0.9));
  border-radius: 20px;
  box-shadow: 0 2px 16px rgba(15, 23, 42, 0.12);
  position: relative;
  overflow: hidden;
}

.metric-trigger {
  background: transparent;
  border: none;
  width: 100%;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  text-align: left;
  cursor: pointer;
  color: inherit;
}

.metric-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.metric-copy {
  flex: 1;
  display: grid;
  gap: 0.25rem;
}

.metric-copy h3 {
  margin: 0;
  font-size: 1rem;
}

.metric-value {
  margin: 0;
  font-size: 1.15rem;
}

.metric-copy small {
  color: rgba(11, 45, 92, 0.8);
}

.metric-status {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(11, 45, 92, 0.75);
}

.metric-card.hydration.near-limit .metric-status {
  color: #c15a11;
}

.metric-card.hydration.over-limit .metric-value,
.metric-card.hydration.over-limit .metric-status {
  color: #b21e35;
}

.metric-card.hydration.over-limit {
  box-shadow: 0 0 0 2px rgba(178, 30, 53, 0.2), 0 12px 30px rgba(178, 30, 53, 0.25);
}

.metric-card.hydration.near-limit {
  box-shadow: 0 0 0 2px rgba(193, 90, 17, 0.15), 0 12px 30px rgba(193, 90, 17, 0.2);
}

.metric-add {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2a6f97;
}

label {
  font-weight: 600;
}

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

input,
textarea,
select {
  padding: 0.65rem 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  background-color: rgba(255, 255, 255, 0.95);
  color: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: rgba(42, 111, 151, 0.8);
  box-shadow: 0 0 0 3px rgba(42, 111, 151, 0.2);
}

button {
  padding: 0.75rem 1rem;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.primary {
  background-color: #2a6f97;
  color: #fff;
}

.primary:hover,
.primary:focus-visible {
  background-color: #1d5a7c;
}

.secondary {
  background-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.sheet {
  position: fixed;
  inset: 0;
  background: rgba(11, 45, 92, 0.35);
  display: grid;
  place-items: center;
  padding: 1.5rem;
  z-index: 1000;
}

.sheet[hidden] {
  display: none;
}

.sheet-container {
  background: #fff;
  color: #0b2d5c;
  width: min(520px, 100%);
  border-radius: 24px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.25);
  max-height: 90vh;
  overflow: auto;
  padding: 1.5rem;
  display: grid;
  gap: 1.25rem;
}

.sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.sheet-close {
  background: transparent;
  border: none;
  color: inherit;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
}

.sheet-close:hover,
.sheet-close:focus-visible {
  background: rgba(11, 45, 92, 0.08);
}

.sheet form {
  background: transparent;
  padding: 0;
  box-shadow: none;
  gap: 1rem;
}

.sheet-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.quick-add {
  background: rgba(233, 245, 255, 0.6);
  border-radius: 16px;
  padding: 0.75rem;
  display: grid;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.quick-add-label {
  font-weight: 600;
}

.quick-add-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.quick-add-buttons button {
  flex: 1;
  min-width: 100px;
  border-radius: 999px;
  border: 1px solid rgba(42, 111, 151, 0.25);
  background: #fff;
}

.quick-add-buttons button:hover,
.quick-add-buttons button:focus-visible {
  background: rgba(42, 111, 151, 0.1);
  border-color: rgba(42, 111, 151, 0.5);
}

.log-description {
  margin: 0 0 1rem;
  color: rgba(11, 45, 92, 0.8);
}

.log-group {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  margin-bottom: 1rem;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.1);
  overflow: hidden;
}

.log-group summary {
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-weight: 600;
  list-style: none;
}

.log-group[open] summary {
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.log-group summary::-webkit-details-marker {
  display: none;
}

.log-list {
  list-style: none;
  margin: 0;
  padding: 0.75rem 1.25rem 1.25rem;
  display: grid;
  gap: 0.75rem;
}

.log-list li {
  background: rgba(233, 245, 255, 0.45);
  border-radius: 14px;
  padding: 0.75rem;
  display: grid;
  gap: 0.25rem;
}

.log-list li button {
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 0;
  cursor: pointer;
}

.log-list .meta {
  font-size: 0.85rem;
  color: rgba(11, 45, 92, 0.75);
}

#print-layout {
  display: none;
}

@media (max-width: 640px) {
  .daily-header {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .sheet {
    padding: 0.75rem;
  }
}

@media print {
  body {
    background-color: #fff;
    color: #000;
  }

  header,
  nav,
  main > section,
  .sheet {
    display: none !important;
  }

  #print-layout {
    display: block;
  }

  #print-layout table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
  }

  #print-layout th,
  #print-layout td {
    border: 1px solid #000;
    padding: 0.35rem 0.55rem;
    text-align: left;
  }

  #print-layout ul {
    list-style: disc;
    padding-left: 1.5rem;
  }
}

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