:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1f2430;
  --muted: #6b7280;
  --accent: #3b5bfd;
  --danger: #d1453b;
  --overdue: #d1453b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 190px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar .brand {
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.sidebar a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
}

.sidebar a:hover { background: var(--bg); }
.sidebar a.active { background: var(--accent); color: #fff; }
.sidebar-spacer { flex: 1; }
.sidebar a.logout { color: var(--muted); font-size: 0.9rem; }

.content {
  flex: 1;
  padding: 28px 36px;
  max-width: 760px;
}

h1 { margin-top: 0; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-group { margin-bottom: 28px; }
.project-group h2 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 8px;
}

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

.day-group { margin-bottom: 28px; }
.day-group h2 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

#agenda-status {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 8px;
}
#agenda-status a { color: var(--accent); text-decoration: none; }
#agenda-status a:hover { text-decoration: underline; }

.drag-handle {
  cursor: grab;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0 2px;
  user-select: none;
  flex-shrink: 0;
}
.drag-handle:active { cursor: grabbing; }

.item-row.dragging { opacity: 0.4; }

.move-to-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 8px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px dashed var(--border);
  border-radius: 10px;
}
.move-to-label { color: var(--muted); font-size: 0.85rem; margin-right: 2px; }
.move-target {
  padding: 6px 12px;
  border-radius: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text);
}
.move-target.drag-over {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.item-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 6px;
}

.item-row.overdue { border-color: var(--overdue); }
.item-row.no-date { background: #f3f0ff; border-color: #c9bdf7; }
.item-row.done { background: var(--bg); border-color: var(--border); opacity: 0.7; }

.complete-form { margin: 0; }

.check {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: #fff;
  cursor: pointer;
  color: transparent;
  line-height: 1;
}
.check:hover { border-color: #3fb84f; }
.check.checked {
  background: #3fb84f;
  border-color: #3fb84f;
  color: #fff;
}
.check.checked:hover { background: #359e42; border-color: #359e42; }
.check.preview {
  display: inline-block;
  cursor: default;
  border-style: dashed;
  background: transparent;
}

.item-title {
  flex: 1;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}
.item-title:hover { text-decoration: underline; }
.item-row.done .item-title { color: var(--muted); text-decoration: line-through; }

.due-badge, .project-badge, .recur-badge, .nodate-badge {
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--bg);
  border-radius: 6px;
  padding: 2px 8px;
  white-space: nowrap;
}

.item-row.overdue .due-badge { color: var(--overdue); font-weight: 600; }

.nodate-badge {
  color: #6b4fd8;
  background: #e6ddff;
  font-weight: 600;
}

.empty { color: var(--muted); }

.search-form { margin-bottom: 16px; display: flex; gap: 10px; align-items: center; }
.search-form input[type=search] {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 260px;
}
.clear-search { color: var(--muted); font-size: 0.9rem; }

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn.secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn.danger { background: #fff; color: var(--danger); border-color: var(--danger); }
.btn.small { padding: 4px 10px; font-size: 0.85rem; }

.item-form, .add-project-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 480px;
}

.item-form label, .add-project-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

.item-form label.inline {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  color: var(--text);
}

.item-form input[type=text],
.item-form input[type=date],
.item-form input[type=number],
.item-form select,
.item-form textarea,
.add-project-form input[type=text] {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
}

fieldset.mode-fieldset {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}
fieldset.mode-fieldset legend { color: var(--muted); font-size: 0.85rem; padding: 0 4px; }

.recurring-options {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.weekday-picker {
  flex-basis: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.weekday-picker .hint { flex-basis: 100%; margin: 6px 0 0; font-size: 0.8rem; color: var(--muted); }
.weekday.inline { background: var(--bg); padding: 4px 8px; border-radius: 6px; }

.form-actions { display: flex; gap: 10px; }

.error { color: var(--danger); font-weight: 600; }

.project-list { list-style: none; margin: 0 0 20px; padding: 0; max-width: 520px; }
.project-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.rename-form { flex: 1; margin: 0; }
.rename-form input {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 1rem;
}
.rename-form input:hover, .rename-form input:focus { border-color: var(--border); background: #fff; }
.item-count { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.delete-form { margin: 0; }

.add-project-form { flex-direction: row; max-width: 420px; }
.add-project-form input { flex: 1; }

/* Login page */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.login-form {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 280px;
}
.login-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; color: var(--muted); }
.login-form input {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

@media (max-width: 640px) {
  .layout { flex-direction: column; }
  .sidebar { width: auto; flex-direction: row; overflow-x: auto; }
  .sidebar-spacer { display: none; }
  .content { padding: 18px; }
}