:root {
  --bg: #f4faf8;
  --surface: #ffffff;
  --text: #0f1f1c;
  --text-muted: #5b6b67;
  --primary: #0f766e;
  --primary-contrast: #ffffff;
  --danger: #b3261e;
  --danger-contrast: #ffffff;
  --border: #e1ece9;
  --success-bg: #e3f6ef;
  --success-text: #0f5132;
  --info-bg: #eaf1fb;
  --info-text: #1e3a5f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1512;
    --surface: #142420;
    --text: #eef6f3;
    --text-muted: #9db3ad;
    --primary: #2dd4bf;
    --primary-contrast: #05231f;
    --danger: #f2867d;
    --danger-contrast: #350b08;
    --border: #24413a;
    --success-bg: #113328;
    --success-text: #7fe3b7;
    --info-bg: #17263a;
    --info-text: #a7c4ec;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}

.topbar {
  padding: calc(14px + env(safe-area-inset-top)) 16px 14px;
  font-weight: 700;
  font-size: 1.1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.content {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Bottom nav */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 4px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.bottom-nav a.active {
  color: var(--primary);
  font-weight: 600;
}

.icon {
  width: 1.3em;
  height: 1.3em;
  flex-shrink: 0;
  vertical-align: -0.25em;
}

.brand-icon {
  width: 1.15em;
  height: 1.15em;
  color: var(--primary);
}

.nav-icon {
  width: 22px;
  height: 22px;
}

.btn-icon {
  width: 1.1em;
  height: 1.1em;
}

.event-icon {
  width: 1em;
  height: 1em;
}

.event-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Flash messages */
.flash-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flash {
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 0.9rem;
}

.flash-success {
  background: var(--success-bg);
  color: var(--success-text);
}

.flash-info {
  background: var(--info-bg);
  color: var(--info-text);
}

/* Streak card */
.streak-card {
  background: linear-gradient(160deg, var(--primary), #0b5750);
  color: var(--primary-contrast);
  border-radius: 20px;
  padding: 28px 20px;
  text-align: center;
}

.streak-label {
  margin: 0;
  opacity: 0.85;
  font-size: 0.9rem;
}

.streak-value {
  margin: 8px 0;
  font-size: 2.2rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.streak-sub {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.85;
}

/* Personal record card (storico) */
.record-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  text-align: center;
}

.record-card h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.record-value {
  margin: 0 0 8px;
  font-size: 1.6rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--primary);
}

.record-card .hint {
  margin: 0;
}

/* Stat grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 10px;
}

.stat-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 700;
}

.stat-name {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 14px;
  padding: 16px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  list-style: none;
}

.btn::-webkit-details-marker {
  display: none;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-contrast);
}

.btn-danger {
  background: var(--danger);
  color: var(--danger-contrast);
}

/* Quick action cards (details/summary) */
.quick-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.action-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 6px;
}

.action-card summary {
  margin: 4px;
}

.action-card summary.btn-block {
  width: calc(100% - 8px);
}

.inline-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 10px 6px;
}

.inline-form label,
.stacked-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.inline-form input,
.stacked-form input {
  font-size: 1rem;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.hint {
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* Intensity picker (checkbox-style single choice) */
.intensity-select {
  display: flex;
  gap: 8px;
}

.intensity-option {
  position: relative;
  flex: 1;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

.intensity-option input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.intensity-option:has(input:checked) {
  background: var(--primary);
  color: var(--primary-contrast);
  border-color: var(--primary);
}

/* Recent events / history */
.recent h2 {
  font-size: 1rem;
  margin: 0 0 8px;
}

.event-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.event-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.88rem;
  gap: 12px;
}

.event-item time {
  color: var(--text-muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.event-trigger {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.event-relapse {
  border-color: color-mix(in srgb, var(--danger) 40%, var(--border));
}

/* Settings form */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
}

.form-card h2 {
  margin-top: 0;
}

.stacked-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 14px;
}

/* Breathing exercise */
.breathing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.breathing-circle {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary), #0b5750);
  color: var(--primary-contrast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  transition: transform 4s ease-in-out;
  transform: scale(0.75);
}

.breathing-circle.grow {
  transform: scale(1.05);
}

.breathing-outcome[hidden] {
  display: none;
}

.strategy-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.strategy-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}

.strategy-item strong {
  display: block;
  margin-bottom: 4px;
}

.strategy-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}