:root {
  color-scheme: dark;
  --bg: #0C1115;
  --surface: #161C22;
  --surface-2: #1B2229;
  --text: #FFFFFF;
  --text-2: #E4ECF2;
  --muted: #C4D1D9;
  --dim: #7A8A95;
  --grey: #5C6B75;
  --divider: #232C36;
  --green: #66BB6A;
  --green-soft: #A5D6A7;
  --red: #EF5350;
  --red-soft: #EF9A9A;
  --gold: #C9A85C;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Roboto Mono", monospace;
  font-size: 14px;
  -webkit-tap-highlight-color: transparent;
}
button { cursor: pointer; }

/* ---------- Auth ---------- */
.auth {
  max-width: 360px;
  margin: 0 auto;
  padding: 80px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}
.auth h1 {
  text-align: center;
  margin: 0 0 24px;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--gold);
}
.auth input {
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--divider);
  color: var(--text);
  font: inherit;
  border-radius: 4px;
  outline: none;
}
.auth input:focus { border-color: var(--gold); }
.auth button.primary {
  padding: 12px;
  background: var(--gold);
  color: #0C1115;
  border: none;
  font: inherit;
  font-weight: bold;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 4px;
}
.msg { margin: 0; min-height: 1.4em; color: var(--red-soft); font-size: 12px; text-align: center; }

.pair { margin-top: 28px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.pair-divider {
  width: 100%; text-align: center; position: relative; color: var(--grey);
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.15em;
}
.pair-divider::before, .pair-divider::after {
  content: ""; position: absolute; top: 50%; width: 30%;
  border-top: 1px solid var(--divider);
}
.pair-divider::before { left: 0; }
.pair-divider::after { right: 0; }
.pair-divider span { background: var(--bg); padding: 0 10px; position: relative; }
.pair-qr {
  width: 200px; height: 200px;
  background: var(--surface);
  padding: 8px;
  border-radius: 6px;
  border: 1px solid var(--divider);
}
.pair-qr.loading { opacity: 0.4; }
.pair-status { margin: 0; color: var(--dim); font-size: 11px; }
.pair-status.success { color: var(--green-soft); }
.pair-status.error { color: var(--red-soft); }

/* ---------- App ---------- */
.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 20px 32px;
}
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0 8px;
}
.user {
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 0.02em;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}
.user:hover { background: rgba(239,154,154,0.06); color: var(--red-soft); }

.pill {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 12px;
  border-radius: 12px;
  border: 1px solid var(--divider);
  background: var(--surface);
  color: var(--muted);
}
.pill.running { color: var(--green-soft); border-color: rgba(102,187,106,0.35); background: rgba(102,187,106,0.10); }
.pill.paused  { color: var(--red-soft);   border-color: rgba(239,154,154,0.35); background: rgba(239,154,154,0.10); }

.dates { text-align: center; margin: 4px 0 4px; color: var(--dim); font-size: 11px; }
.dates #since { color: var(--muted); font-size: 13px; margin-top: 2px; }

hr { border: 0; border-top: 1px solid var(--divider); margin: 12px 0; }

.pct { text-align: center; }
#globalPct {
  font-size: clamp(28px, 9vw, 44px);
  font-weight: bold;
  vertical-align: middle;
}
#badge {
  font-size: clamp(24px, 7vw, 36px);
  margin-left: 12px;
  vertical-align: middle;
}

.big {
  font-size: clamp(28px, 9vw, 36px);
  font-weight: bold;
  text-align: center;
  margin-top: 6px;
}
.confirmed { text-align: center; color: var(--dim); font-size: 11px; min-height: 1.2em; }

.toggle {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 14px auto 0;
  padding: 14px;
  border: none;
  font: inherit;
  font-weight: bold;
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
}
.toggle.start { background: var(--green); color: #0C1115; }
.toggle.stop  { background: var(--red);   color: #fff; }
.toggle:disabled { opacity: 0.5; cursor: progress; }

.avg-row { display: flex; gap: 8px; }
.avg-btn {
  flex: 1;
  background: transparent;
  border: none;
  font: inherit;
  font-size: 11px;
  padding: 6px 8px;
  text-align: left;
  border-radius: 4px;
  color: var(--green-soft);
}
.avg-btn.pause  { color: var(--red-soft); text-align: right; }
.avg-btn:hover { background: rgba(255,255,255,0.04); }

.cols-header {
  display: grid;
  grid-template-columns: 4fr 3fr 3fr 3fr 3fr;
  padding: 6px 0 8px;
  color: var(--grey);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.cols-header span:not(:first-child) { text-align: right; }

#journal { padding-bottom: 16px; }

.day-header {
  display: grid;
  grid-template-columns: 4fr 3fr 3fr 3fr 3fr;
  padding: 8px 0;
  cursor: pointer;
  font-size: 12px;
  border-radius: 4px;
}
.day-header:hover { background: rgba(255,255,255,0.03); }
.day-header span:not(:first-child) { text-align: right; }
.d-date { color: var(--text-2); }
.d-dur { color: var(--dim); }
.d-local { color: var(--muted); }
.d-global { color: var(--text); font-weight: bold; }

.session {
  padding: 10px 0 8px;
  border-bottom: 1px solid var(--divider);
}
.s-line, .s-deltas {
  display: flex;
  justify-content: space-between;
}
.s-line { font-size: 12px; }
.s-deltas { font-size: 11px; margin-top: 3px; }
.s-range { color: var(--text-2); }
.session.pause .s-range { color: var(--dim); }
.s-dur { font-weight: bold; }
.session.active .s-dur { color: var(--green-soft); }
.session.pause  .s-dur { color: var(--red-soft); }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.78); }
.modal-content {
  position: relative;
  background: var(--surface);
  padding: 24px 22px;
  width: min(560px, 92vw);
  max-height: 86vh;
  overflow: auto;
  border-radius: 6px;
  border: 1px solid var(--divider);
}
.modal-content h2 { margin: 0 0 12px; font-size: 16px; color: var(--text); }
.modal-content .explanation {
  color: var(--dim);
  font-size: 12px;
  line-height: 1.55;
  margin: 0 0 14px;
  white-space: pre-line;
}
.formula { line-height: 1.55; word-break: break-word; }
.formula-line { padding: 2px 0; color: var(--text-2); font-size: 13px; }
.formula-line.bold { font-weight: bold; color: var(--text); }
.formula-line.muted { color: var(--grey); margin-top: 8px; font-size: 12px; }
.modal-actions {
  display: flex; gap: 8px; margin-top: 16px; justify-content: flex-end;
}
.modal-actions button {
  padding: 8px 18px;
  font: inherit;
  border: 1px solid var(--divider);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 4px;
}
.modal-actions button.primary { background: var(--gold); color: #0C1115; border-color: var(--gold); }
.modal-actions button.danger { background: #2E1414; color: var(--red-soft); border-color: rgba(239,83,80,0.4); }

.confirm-body { color: var(--muted); font-size: 13px; line-height: 1.5; margin: 0 0 8px; }