:root {
  --paper: #eef1ec;
  --paper-raised: #f7f9f5;
  --ink: #17231c;
  --ink-soft: #4d5c52;
  --line: #ccd6c8;
  --line-strong: #a9b8a2;

  --billable: #2f6f4f;
  --billable-bg: #e2efe6;
  --account: #5b4a8f;
  --account-bg: #eae5f5;
  --custom: #b2601f;
  --custom-bg: #f5e7d7;

  --danger: #a3402f;

  --radius: 10px;
  --font-ui: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--ink);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 34px,
    var(--line) 34px,
    var(--line) 35px
  );
  min-height: 100vh;
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  font-size: 28px;
  line-height: 1;
}

.brand-text h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.01em;
}

.brand-text p {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.topbar-stat {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
}

.topbar-stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 22px;
}

.topbar-stat-label {
  font-size: 11.5px;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Buttons */
.btn {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 13.5px;
  border-radius: var(--radius);
  border: 1.5px solid var(--ink);
  padding: 10px 16px;
  cursor: pointer;
  background: var(--paper-raised);
  color: var(--ink);
  transition: transform 0.08s ease, background 0.15s ease;
}

.btn:hover { background: #ffffff; }
.btn:active { transform: scale(0.96); }

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: #24352a; }

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--danger);
}
.btn-ghost:hover { border-color: var(--danger); background: #fbeae6; }

/* Add customer bar */
.add-customer {
  display: flex;
  gap: 10px;
  margin-bottom: 28px;
}

.add-customer input {
  flex: 1;
  font-family: var(--font-ui);
  font-size: 14px;
  padding: 11px 14px;
  border-radius: var(--radius);
  border: 1.5px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
}

.add-customer input:focus {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}

/* Customer grid */
.customer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

.card {
  background: var(--paper-raised);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 10px;
}

.card-title {
  font-weight: 700;
  font-size: 16px;
  word-break: break-word;
}

.card-total {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.card-remove {
  background: none;
  border: none;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 13px;
  padding: 2px 4px;
}
.card-remove:hover { color: var(--danger); }

/* Task rows */
.task-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--paper);
}

.task-row.billable { box-shadow: inset 3px 0 0 var(--billable); }
.task-row.account { box-shadow: inset 3px 0 0 var(--account); }
.task-row.custom { box-shadow: inset 3px 0 0 var(--custom); }

.task-info {
  flex: 1;
  min-width: 0;
}

.task-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.task-time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 500;
}

.task-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pill-btn {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  color: #ffffff;
  transition: transform 0.08s ease;
}
.pill-btn:active { transform: scale(0.88); }

.task-row.billable .pill-btn.add { background: var(--billable); }
.task-row.account .pill-btn.add { background: var(--account); }
.task-row.custom .pill-btn.add { background: var(--custom); }

.pill-btn.subtract {
  background: transparent;
  color: var(--ink-soft);
  border: 1.5px solid var(--line-strong);
  width: 26px;
  height: 26px;
}
.pill-btn.subtract:hover { border-color: var(--danger); color: var(--danger); }

.task-remove {
  background: none;
  border: none;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 12px;
  padding: 4px;
}
.task-remove:hover { color: var(--danger); }

/* Add custom task */
.add-task-row {
  display: flex;
  gap: 6px;
  margin-top: 2px;
}

.add-task-row input {
  flex: 1;
  font-family: var(--font-ui);
  font-size: 12.5px;
  padding: 7px 10px;
  border-radius: 7px;
  border: 1.3px dashed var(--line-strong);
  background: transparent;
  color: var(--ink);
}
.add-task-row input:focus {
  outline: none;
  border-color: var(--ink);
}

.add-task-btn {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 7px;
  border: 1.3px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  color: var(--ink-soft);
  white-space: nowrap;
}
.add-task-btn:hover { border-color: var(--ink); color: var(--ink); }

/* Empty state */
.empty-state {
  text-align: center;
  color: var(--ink-soft);
  font-size: 14px;
  margin-top: 60px;
}

.foot-note {
  text-align: center;
  color: var(--ink-soft);
  font-size: 11.5px;
  margin-top: 48px;
  line-height: 1.5;
}

/* Pulse feedback when a timer updates */
@keyframes stamp {
  0% { transform: scale(1); }
  40% { transform: scale(1.12); }
  100% { transform: scale(1); }
}
.task-time.pulse {
  animation: stamp 0.22s ease;
}

@media (max-width: 520px) {
  .topbar-stat { margin-left: 0; align-items: flex-start; text-align: left; }
  .add-customer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .btn, .pill-btn, .task-time.pulse { transition: none; animation: none; }
}