:root {
  color-scheme: light dark;
  --bg: #faf8f5;
  --card-bg: #ffffff;
  --card-idle-bg: #f4f1ec;
  --text: #1c1917;
  --muted: #7a736b;
  --faint: #a8a29b;
  --border: #ece8e2;
  --border-strong: #ddd7cf;
  --shadow: 0 1px 2px rgba(28, 25, 23, 0.04), 0 4px 12px rgba(28, 25, 23, 0.05);
  --shadow-running: 0 2px 6px rgba(28, 25, 23, 0.07), 0 10px 26px rgba(28, 25, 23, 0.09);
  --ok: #15803d;
  --ok-bg: rgba(22, 163, 74, 0.12);
  --pending: #b45309;
  --pending-bg: rgba(217, 119, 6, 0.14);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17151b;
    --card-bg: #262330;
    --card-idle-bg: #1d1b23;
    --text: #f4f2ef;
    --muted: #a29ba6;
    --faint: #6f6877;
    --border: #302d38;
    --border-strong: #3d3a46;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 14px rgba(0, 0, 0, 0.35);
    --shadow-running: 0 2px 8px rgba(0, 0, 0, 0.4), 0 10px 28px rgba(0, 0, 0, 0.45);
    --ok: #4ade80;
    --ok-bg: rgba(74, 222, 128, 0.14);
    --pending: #fbbf24;
    --pending-bg: rgba(251, 191, 36, 0.16);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 3rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

.topbar h1 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.logo {
  height: 34px;
  width: auto;
  display: block;
}

/* The brand mark is dark green; lift it so it stays legible on the dark
   background without losing the green entirely. */
@media (prefers-color-scheme: dark) {
  .logo {
    filter: brightness(1.7) saturate(0.9);
  }
}

.icon-btn {
  background: none;
  border: none;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  color: var(--faint);
  padding: 0.3rem;
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}

.icon-btn:hover {
  color: var(--text);
  background: var(--card-idle-bg);
}

main {
  padding: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

.client-card {
  background: var(--card-idle-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.12s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.client-card:active {
  transform: scale(0.985);
}

.client-card.running {
  background: var(--card-bg);
  border-color: var(--border-strong);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-running);
}

.client-btn {
  all: unset;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 1.05rem 1.1rem;
  width: 100%;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
}

.client-card.running .dot {
  opacity: 1;
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.82); }
}

.client-name {
  font-weight: 650;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.elapsed {
  font-variant-numeric: tabular-nums;
  color: var(--faint);
  font-size: 0.92rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.client-card:not(.running) .elapsed::before {
  content: "";
  width: 0;
  height: 0;
  border-left: 8px solid currentColor;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  opacity: 0.65;
}

.client-card.running .elapsed {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.18rem;
}

.note-field {
  margin: 0 0.7rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-idle-bg);
  color: var(--text);
  padding: 0.6rem 0.7rem;
  font: inherit;
  font-size: 0.9rem;
  line-height: 1.45;
  resize: none;
  overflow: hidden;
  min-height: 2.9rem;
  transition: border-color 0.15s;
}

.note-field::placeholder {
  color: var(--faint);
}

.note-field:focus {
  outline: none;
  border-color: var(--faint);
  background: var(--card-bg);
}

.manage-clients {
  margin-bottom: 2rem;
  padding: 1.25rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}

.manage-clients.hidden {
  display: none;
}

.manage-clients h2 {
  margin-top: 0;
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.secondary-btn,
.dialog-actions button {
  background: var(--card-bg);
  border: 1px solid var(--border-strong);
  color: var(--text);
  border-radius: 10px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font: inherit;
  font-weight: 550;
  transition: background 0.15s, border-color 0.15s;
}

.secondary-btn:hover,
.dialog-actions button:hover {
  background: var(--card-idle-bg);
  border-color: var(--faint);
}

.fb-client-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.fb-client-row select {
  flex: 1;
  min-width: 130px;
  padding: 0.4rem;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text);
  font: inherit;
}

h2 {
  font-size: 0.78rem;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 650;
  margin-bottom: 0.75rem;
}

.history-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.history-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.2rem 0.75rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
}

.history-client {
  font-weight: 650;
  font-size: 0.98rem;
}

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

.history-duration {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.92rem;
  font-weight: 550;
}

.history-note {
  flex-basis: 100%;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.4;
  margin-top: 0.1rem;
}

.pill {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.16rem 0.6rem;
  border-radius: 999px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  border: 1px solid transparent;
}

.pill.running {
  color: var(--accent);
  border-color: var(--accent);
}

.pill.synced {
  color: var(--ok);
  background: var(--ok-bg);
}

.pill.pending {
  color: var(--pending);
  background: var(--pending-bg);
}

dialog {
  border: none;
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--card-bg);
  color: var(--text);
  max-width: 380px;
  width: 90vw;
  box-shadow: var(--shadow-running);
}

dialog h2 {
  color: var(--text);
  text-transform: none;
  letter-spacing: -0.01em;
  font-size: 1.15rem;
  margin-top: 0;
}

dialog::backdrop {
  background: rgba(20, 18, 16, 0.45);
}

dialog label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.85rem;
  font-size: 0.88rem;
  font-weight: 550;
}

dialog input {
  padding: 0.55rem 0.65rem;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

dialog input:focus {
  outline: none;
  border-color: var(--faint);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.dialog-actions button[value="switch"],
.dialog-actions button[value="both"],
#saveSettingsBtn {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}