:root {
  --bg: #eef5f2;
  --surface: #ffffff;
  --ink: #17332f;
  --muted: #4f6b66;
  --line: #d5e4df;
  --teal: #157a6e;
  --teal-dark: #0e5a52;
  --teal-soft: #d8efe9;
  --done: #0f7a4a;
  --done-ink: #ffffff;
  --shadow: 0 10px 30px rgba(21, 122, 110, 0.10);
  --radius: 1.15rem;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-l: env(safe-area-inset-left, 0px);
  --safe-r: env(safe-area-inset-right, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12201e;
    --surface: #1c2d2a;
    --ink: #e8f3f0;
    --muted: #9bb4af;
    --line: #2c4440;
    --teal: #3cbcac;
    --teal-dark: #2a9e90;
    --teal-soft: #1a3a36;
    --done: #2f9e68;
    --done-ink: #062016;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.45;
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  padding: calc(1.15rem + var(--safe-t)) calc(1.1rem + var(--safe-r)) calc(2rem + var(--safe-b)) calc(1.1rem + var(--safe-l));
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip:focus {
  left: 1rem;
  z-index: 10;
  background: var(--surface);
  color: var(--ink);
  padding: 0.4rem 0.7rem;
}

.app {
  max-width: 28rem;
  margin: 0 auto;
}

.top {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.15rem;
}

.logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  flex: none;
  box-shadow: var(--shadow);
}

h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.tagline {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

h2 {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.05rem 1.1rem 1.15rem;
  box-shadow: var(--shadow);
  margin: 0 0 1rem;
}

.tip {
  background: var(--teal-soft);
  border-color: transparent;
  color: var(--ink);
  font-size: 0.98rem;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 0.9rem 0.95rem;
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.stat-value {
  display: block;
  font-size: 2.15rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--teal-dark);
  margin-top: 0.15rem;
}

@media (prefers-color-scheme: dark) {
  .stat-value { color: var(--teal); }
}

.next {
  margin: 0 0 1rem;
  text-align: center;
  color: var(--muted);
  font-weight: 600;
}

.session {
  text-align: center;
  border: 2px solid var(--teal);
  animation: pop 0.35s ease;
}

.session-kicker {
  margin: 0 0 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--teal);
}

.session h2 {
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  margin: 0 0 0.4rem;
}

.session-detail {
  margin: 0 0 1.05rem;
  color: var(--muted);
}

@keyframes pop {
  from { transform: translateY(8px); opacity: 0; }
  to { transform: none; opacity: 1; }
}

.hint {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.times {
  list-style: none;
  margin: 0 0 0.85rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.time-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.time-row input[type="time"] {
  flex: 1;
  min-width: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 0.7rem 0.8rem;
  min-height: 52px;
  font-family: inherit;
}

.time-row input[type="time"]:focus {
  outline: 3px solid var(--teal);
  outline-offset: 1px;
  border-color: var(--teal);
}

.btn-remove {
  flex: none;
  width: 52px;
  min-height: 52px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--muted);
  border-radius: 0.85rem;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  font-family: inherit;
}

.btn-remove:hover,
.btn-remove:focus {
  color: #b42318;
  border-color: #b42318;
  outline: none;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin: 0 0 1rem;
}

.actions .hint { margin: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 54px;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 0.95rem;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  cursor: pointer;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

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

.btn-primary {
  background: var(--teal);
  color: #fff;
}

.btn-primary:hover { filter: brightness(1.05); }

.btn-secondary {
  background: var(--teal-soft);
  color: var(--teal-dark);
}

@media (prefers-color-scheme: dark) {
  .btn-primary { color: #062016; }
  .btn-secondary { color: var(--ink); }
}

.btn-done {
  background: var(--done);
  color: var(--done-ink);
  min-height: 62px;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.btn-quiet {
  background: transparent;
  color: var(--muted);
  min-height: 44px;
  font-weight: 700;
  font-size: 1rem;
}

.btn-quiet:hover { color: var(--ink); }

.btn[disabled] {
  opacity: 0.65;
  cursor: default;
}

.how ul {
  margin: 0;
  padding-left: 1.15rem;
}

.how li {
  margin: 0 0 0.7rem;
  color: var(--ink);
  font-size: 0.98rem;
}

.how li:last-child { margin-bottom: 0; }

.hidden { display: none !important; }

.empty-times {
  margin: 0 0 0.7rem;
  color: var(--muted);
}