:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --line: #e5e7eb;
  --line-strong: #cbd5e1;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --danger: #dc2626;
  --radius: 10px;
  --slot: 44px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

.screen { min-height: 100vh; }
[hidden] { display: none !important; }

/* ---- auth ---- */
.auth-card {
  max-width: 360px;
  margin: 12vh auto;
  background: var(--panel);
  padding: 28px 24px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.auth-card h1 { margin: 0; font-size: 1.4rem; }
.auth-card p { margin: 0; color: var(--muted); font-size: .9rem; }
.auth-card input {
  padding: 11px 12px; border: 1px solid var(--line-strong);
  border-radius: 8px; font-size: 1rem;
}
.auth-card button[type=submit] {
  padding: 11px; border: 0; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 1rem; cursor: pointer;
}
.auth-err { color: var(--danger); font-size: .85rem; min-height: 1em; }
.link-btn { background: none; border: 0; color: var(--accent); cursor: pointer; font-size: .85rem; }

/* ---- topbar ---- */
#topbar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  padding: 8px 12px; background: var(--panel); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.bar-group { display: flex; align-items: center; gap: 6px; }
.bar-tools { margin-left: auto; flex-wrap: wrap; }
.cur-date { font-weight: 600; margin-left: 6px; }
.btn {
  padding: 7px 12px; border: 1px solid var(--line-strong); background: #fff;
  border-radius: 8px; cursor: pointer; font-size: .9rem; color: var(--text);
  text-decoration: none; display: inline-block;
}
.btn:hover { background: #f3f4f6; }
.btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.icon-btn { width: 34px; height: 34px; border: 1px solid var(--line-strong); background: #fff;
  border-radius: 8px; font-size: 1.2rem; cursor: pointer; line-height: 1; }
.select { padding: 7px 8px; border: 1px solid var(--line-strong); border-radius: 8px; font-size: .9rem; }
.save-status { color: var(--muted); font-size: .8rem; min-width: 60px; }
.ro-badge { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); border: 1px solid var(--line-strong); border-radius: 999px;
  padding: 3px 9px; }

/* ---- workspace ---- */
#workspace { display: flex; gap: 12px; padding: 12px; align-items: flex-start; }
#sidebar {
  width: 260px; flex: none; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 12px;
  position: sticky; top: 64px;
}
#sidebar h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); margin: 4px 0 8px; }
#board { flex: 1; min-width: 0; }

/* ---- palette ---- */
.pal-group { margin-bottom: 10px; }
.pal-head { display: flex; align-items: center; gap: 6px; font-size: .8rem;
  color: var(--muted); margin-bottom: 4px; }
.swatch { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.pal-item {
  border: 1px solid var(--line); border-left: 4px solid #ccc;
  border-radius: 6px; padding: 7px 9px; margin-bottom: 5px; background: #fff;
  font-size: .9rem; cursor: grab; touch-action: none; user-select: none;
}
.pal-item:active { cursor: grabbing; }

/* ---- timeline ---- */
.timeline { display: flex; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 8px 8px 8px 0; }
.tl-gutter { position: relative; width: 52px; flex: none; }
.tl-tick { position: absolute; right: 6px; transform: translateY(-50%);
  font-size: .72rem; color: var(--muted); }
.tl-grid { position: relative; flex: 1; min-width: 0; margin-left: 4px; }
.tl-line { position: absolute; left: 0; right: 0; border-top: 1px solid var(--line); }
.tl-line-hour { border-top-color: var(--line-strong); }

.block {
  position: absolute; border-radius: 7px; padding: 4px 7px; overflow: hidden;
  font-size: .8rem; line-height: 1.15; cursor: grab; touch-action: none;
  box-shadow: 0 1px 3px rgba(0,0,0,.18); user-select: none;
}
.block.dragging { opacity: .85; box-shadow: 0 4px 12px rgba(0,0,0,.3); z-index: 5; }
.block-time { font-size: .68rem; opacity: .85; }
.block-name { font-weight: 600; }
.block-resize { position: absolute; left: 0; right: 0; bottom: 0; height: 9px;
  cursor: ns-resize; touch-action: none; }

.drag-ghost {
  position: fixed; pointer-events: none; z-index: 999;
  background: var(--accent); color: #fff; padding: 5px 9px; border-radius: 6px;
  font-size: .85rem; box-shadow: 0 4px 12px rgba(0,0,0,.3);
}

#notes-wrap { margin-top: 10px; display: flex; flex-direction: column; gap: 4px; }
#notes-wrap label { font-size: .8rem; color: var(--muted); }
#notes { width: 100%; border: 1px solid var(--line-strong); border-radius: 8px;
  padding: 8px; font: inherit; resize: vertical; }

/* ---- stats ---- */
.stat-box { margin-bottom: 12px; }
.stat-title { font-weight: 600; font-size: .85rem; display: flex; justify-content: space-between; }
.stat-total { color: var(--accent); }
.stat-row { display: flex; align-items: center; gap: 6px; font-size: .82rem; padding: 2px 0; }
.stat-name { flex: 1; }
.stat-val { color: var(--muted); }

/* ---- week view ---- */
#week-view { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.wk-col { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 6px; }
.wk-head { width: 100%; border: 0; background: none; cursor: pointer;
  font-size: .72rem; font-weight: 600; padding: 2px 0 6px; }
.wk-head:hover { color: var(--accent); }
.wk-timeline { --slot: 22px; }
.wk-timeline .tl-gutter { width: 30px; }
.wk-timeline .tl-tick { font-size: .6rem; }
.wk-timeline .block { font-size: .6rem; padding: 1px 3px; }
.wk-timeline .block-time { display: none; }

/* ---- modal ---- */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.35);
  display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal-card { background: #fff; border-radius: 12px; padding: 18px; width: min(360px, 92vw);
  box-shadow: 0 12px 40px rgba(0,0,0,.25); display: flex; flex-direction: column; gap: 10px; }
.modal-card h3 { margin: 0; font-size: 1rem; }
.modal-card h3 small { color: var(--muted); font-weight: 400; }
.modal-card input { padding: 9px 10px; border: 1px solid var(--line-strong); border-radius: 8px; font-size: 1rem; }
.modal-card label { font-size: .8rem; color: var(--muted); }
.modal-actions { display: flex; justify-content: space-between; gap: 8px; }

/* The week-view slot height override needs the block math to use it too;
   timeline.js uses a fixed JS constant, so week mini-view simply scrolls. */

/* ---- palette manager ---- */
.manage-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4);
  display: flex; align-items: flex-start; justify-content: center; z-index: 200;
  overflow: auto; padding: 18px; }
.manage-panel { background: #fff; border-radius: 12px; width: min(820px, 100%);
  box-shadow: 0 16px 50px rgba(0,0,0,.3); }
.manage-head { display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--line); position: sticky; top: 0;
  background: #fff; border-radius: 12px 12px 0 0; }
.manage-head h2 { margin: 0; font-size: 1.05rem; }
.manage-body { padding: 14px 18px 20px; }

.mg-cat { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 12px; overflow: hidden; }
.mg-cathead { display: flex; align-items: center; gap: 6px; padding: 8px; background: #f8fafc;
  border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.mg-catbody { padding: 8px; display: flex; flex-direction: column; gap: 6px; }
.mg-newcat { border-style: dashed; }
.mg-newcat .mg-row { padding: 8px; }

.mg-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.mg-row.archived { opacity: .5; }
.mg-add { border-top: 1px dashed var(--line); padding-top: 8px; }
.mg-ord { display: inline-flex; flex-direction: column; gap: 1px; }
.mg-ord .btn { padding: 0 5px; line-height: 1.1; font-size: .65rem; }
.mg-in { flex: 1 1 110px; min-width: 80px; padding: 6px 8px;
  border: 1px solid var(--line-strong); border-radius: 6px; font-size: .85rem; }
.mg-num { flex: 0 0 70px; }
.mg-color { width: 34px; height: 30px; border: 1px solid var(--line-strong);
  border-radius: 6px; padding: 0; background: none; }
.btn.small { padding: 4px 8px; font-size: .78rem; }

/* ---- responsive ---- */
@media (max-width: 760px) {
  #workspace { flex-direction: column; }
  #sidebar { width: 100%; position: static; }
  #palette { display: flex; flex-wrap: wrap; gap: 6px; }
  .pal-group { margin: 0; }
  .bar-tools { width: 100%; }
  #week-view { grid-template-columns: repeat(7, minmax(90px, 1fr)); overflow-x: auto; }
}