:root {
  --paper: #eaefec;
  --paper-card: #ffffff;
  --ink: #1f2b24;
  --ink-soft: #55635b;
  --line: #cfd8d1;
  --accent-amber: #a9781f;
  --accent-indigo: #2b4b6f;
  --accent-moss: #3f6355;
  --danger: #a13c2c;
  --radius: 3px;
  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.masthead {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.masthead h1 {
  font-family: 'Newsreader', serif;
  font-weight: 600;
  font-size: 2.4rem;
  margin: 0;
  letter-spacing: -0.01em;
}

.today-line {
  margin: 0.15rem 0 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.notify-toggle {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.notify-toggle:hover { background: var(--ink); color: var(--paper); }
.notify-toggle.on {
  background: var(--accent-moss);
  border-color: var(--accent-moss);
  color: #fff;
}

.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.5rem;
}

.tab {
  background: none;
  border: none;
  padding: 0.6rem 0.2rem;
  margin-right: 1.3rem;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transform: translateY(1px);
}
.tab.active {
  color: var(--ink);
  border-bottom-color: var(--accent-amber);
}

.panel { display: none; }
.panel.active { display: block; }

.entry-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.entry-row input[type="text"] {
  flex: 1 1 220px;
}

.entry-row input,
.entry-row select {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-card);
  color: var(--ink);
}

.entry-row button {
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
}
.entry-row button:hover { background: var(--accent-moss); }

.list-head {
  font-size: 0.78rem;
  text-transform: none;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.35rem;
  margin: 1.2rem 0 0.5rem;
}
.list-head-muted { opacity: 0.7; }

.task-list, .reminder-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.65rem 0.2rem;
  border-bottom: 1px solid var(--line);
}

.task-check {
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  position: relative;
}
.task-check.checked { background: var(--accent-moss); border-color: var(--accent-moss); }
.task-check.checked::after {
  content: '';
  position: absolute;
  left: 3px; top: 5px;
  width: 8px; height: 4px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}

.task-body { flex: 1; }
.task-title { font-weight: 500; }
.done-list .task-title { text-decoration: line-through; color: var(--ink-soft); }

.task-meta {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 0.15rem;
  display: flex;
  gap: 0.6rem;
}

.priority-high { color: var(--danger); }
.priority-medium { color: var(--accent-amber); }
.priority-low { color: var(--accent-moss); }

.task-delete {
  background: none;
  border: none;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.2rem;
}
.task-delete:hover { color: var(--danger); }

.reminder-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-indigo);
  border-radius: var(--radius);
  background: var(--paper-card);
  margin-bottom: 0.6rem;
}

.reminder-when {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 0.1rem;
}

.reminder-tag {
  font-size: 0.72rem;
  color: var(--accent-indigo);
  border: 1px solid var(--accent-indigo);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  margin-left: 0.5rem;
}

.empty-state {
  color: var(--ink-soft);
  font-style: italic;
  padding: 1.2rem 0.2rem;
}
.hidden { display: none !important; }

.alarm-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(21, 29, 24, 0.72);
  backdrop-filter: blur(3px);
}

.alarm-card {
  width: min(100%, 420px);
  padding: 1.5rem;
  background: var(--paper-card);
  border: 3px solid var(--danger);
  border-radius: 8px;
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.28);
}

.alarm-kicker {
  color: var(--danger);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.alarm-card h2 { margin: 0.35rem 0 0.5rem; }
.alarm-status { color: var(--ink-soft); }
.alarm-actions { display: flex; gap: 0.65rem; margin-top: 1.25rem; }
.alarm-actions button {
  flex: 1;
  padding: 0.7rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: white;
  font: inherit;
  cursor: pointer;
}
.alarm-actions button:disabled { cursor: not-allowed; opacity: 0.45; }
.alarm-actions .alarm-cancel { background: var(--danger); border-color: var(--danger); }

/* Calculator */
.calc {
  max-width: 340px;
  margin: 0 auto;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem;
}

.calc-display {
  width: 100%;
  text-align: right;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 2rem;
  border: none;
  background: transparent;
  color: var(--ink);
  padding: 0.6rem 0.3rem 1rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.calc-key {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.1rem;
  padding: 0.85rem 0;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
}
.calc-key:hover { background: #dfe6e1; }
.calc-key-op { color: var(--accent-indigo); }
.calc-key-wide { grid-column: span 2; }
.calc-key-equals { background: var(--accent-moss); color: #fff; border-color: var(--accent-moss); }
.calc-key-equals:hover { background: #345548; }

@media (max-width: 480px) {
  .masthead h1 { font-size: 1.9rem; }
  .entry-row { flex-direction: column; }
  .entry-row input, .entry-row select, .entry-row button { width: 100%; }
}