:root {
  --bg:        #0d1117;
  --card:      #161b22;
  --border:    #30363d;
  --text:      #e6edf3;
  --muted:     #8b949e;
  --accent:    #58a6ff;
  --today:     #1f3a5f;
  --today-border: #388bfd;
  --danger:    #f85149;
  --warning-bg: #2d1f1f;

  --c-shift:    #f85149;
  --c-work:     #d29922;
  --c-class:    #bc8cff;
  --c-exercise: #3fb950;
  --c-sleep:    #388bfd;
  --c-travel:   #6e7681;
  --c-study:    #79c0ff;
  --c-meal:     #ffa657;
  --c-other:    #8b949e;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  min-height: 100vh;
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
  gap: 8px;
}

.app-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
  margin-right: 10px;
}

.week-range {
  color: var(--muted);
  font-size: 13px;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-nav {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
.btn-nav:hover { background: var(--border); }

.btn-today { color: var(--accent); border-color: var(--accent); }

.btn-add {
  background: var(--accent);
  color: #0d1117;
  border: none;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}
.btn-add:hover { opacity: 0.85; }

/* ── Weekly stats bar ── */
.weekly-stats {
  display: flex;
  gap: 20px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  background: var(--card);
}

.stat-item strong { color: var(--text); }

/* ── Week grid ── */
.week-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(160px, 1fr));
  gap: 8px;
  padding: 12px;
  overflow-x: auto;
  align-items: start;
}

.loading {
  color: var(--muted);
  padding: 40px;
  text-align: center;
  grid-column: 1 / -1;
}

/* ── Day card ── */
.day-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.day-card.today {
  border-color: var(--today-border);
  background: var(--today);
}

.day-header {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 10px 6px;
  border-bottom: 1px solid var(--border);
}

.day-name {
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.day-date {
  font-size: 13px;
  font-weight: 600;
  flex: 1;
}

.today-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--today-border);
  letter-spacing: 0.05em;
}

.day-add-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  width: 20px;
  height: 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.day-add-btn:hover { color: var(--text); border-color: var(--muted); }

/* ── Timeline bar ── */
.timeline {
  position: relative;
  height: 28px;
  background: #1c2128;
  overflow: hidden;
  flex-shrink: 0;
}

.tl-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255,255,255,0.07);
}

.tl-block {
  position: absolute;
  top: 0;
  bottom: 0;
  min-width: 2px;
  opacity: 0.85;
}

/* ── Event list ── */
.event-list {
  padding: 6px 0;
  flex: 1;
}

.event-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
}
.event-item:hover { background: rgba(255,255,255,0.04); }

.event-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.event-time {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.event-title {
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.no-events {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 12px;
}

/* ── Day footer (free time + insights) ── */
.day-footer {
  border-top: 1px solid var(--border);
  padding: 6px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.free-time {
  font-size: 11px;
  color: var(--muted);
}

.insight {
  font-size: 11px;
  line-height: 1.4;
}

.insight.sleep   { color: var(--c-sleep); }
.insight.exercise { color: var(--c-exercise); }
.insight.study   { color: var(--c-study); }
.insight.warning {
  color: var(--danger);
  background: var(--warning-bg);
  padding: 2px 4px;
  border-radius: 3px;
}

/* ── Modal ── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal.hidden { display: none; }

.modal-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 15px;
  flex-shrink: 0;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 16px;
  cursor: pointer;
  padding: 2px 4px;
}
.modal-close:hover { color: var(--text); }

.modal-body {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-body label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 2px;
  display: block;
}

.modal-body input[type="text"],
.modal-body input[type="date"],
.modal-body input[type="time"],
.modal-body select,
.modal-body textarea {
  width: 100%;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 7px 10px;
  font-size: 13px;
  outline: none;
}

.modal-body input:focus,
.modal-body select:focus,
.modal-body textarea:focus {
  border-color: var(--accent);
}

.modal-body select option {
  background: #0d1117;
}

.time-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.check-label {
  display: flex !important;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px !important;
  color: var(--text) !important;
}

.check-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.day-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.day-checks label {
  display: flex !important;
  align-items: center;
  gap: 4px;
  font-size: 12px !important;
  color: var(--text) !important;
  cursor: pointer;
}

.day-checks input[type="checkbox"] {
  accent-color: var(--accent);
}

.hidden { display: none !important; }

.muted { color: var(--muted); font-size: 11px; }

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px 14px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-footer-right {
  display: flex;
  gap: 8px;
}

.modal-footer button {
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
}
.modal-footer button:hover { background: var(--border); }

.btn-primary {
  background: var(--accent) !important;
  color: #0d1117 !important;
  border-color: var(--accent) !important;
  font-weight: 600;
}
.btn-primary:hover { opacity: 0.85; }

.btn-danger {
  background: transparent !important;
  color: var(--danger) !important;
  border-color: var(--danger) !important;
}
.btn-danger:hover { background: var(--warning-bg) !important; }

/* ── Recurring indicator ── */
.recur-icon {
  font-size: 10px;
  color: var(--muted);
  margin-left: 3px;
  vertical-align: middle;
}

/* ── Scope picker ── */
.scope-picker {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 16px;
}
.scope-picker.hidden { display: none !important; }

.scope-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 100%;
  max-width: 320px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.scope-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

.scope-section-label {
  padding: 8px 14px 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}
.scope-section-danger { color: var(--danger); }

.scope-btn {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  border-top: 1px solid var(--border);
  color: var(--text);
  text-align: left;
  padding: 10px 14px;
  font-size: 13px;
  cursor: pointer;
}
.scope-btn:first-of-type { border-top: none; }
.scope-btn:hover { background: rgba(255,255,255,0.04); }
.scope-btn-danger { color: var(--danger); }
.scope-btn-danger:hover { background: var(--warning-bg); }

.scope-cancel {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
  padding: 10px 14px;
  font-size: 13px;
  cursor: pointer;
  margin-top: 4px;
}
.scope-cancel:hover { color: var(--text); }

/* ── Responsive: stack on narrow screens ── */
@media (max-width: 700px) {
  .week-grid {
    grid-template-columns: 1fr;
    padding: 8px;
  }
  .app-title { font-size: 14px; }
}