:root {
  --bg: #fafafa;
  --panel: #ffffff;
  --side: #f4f4f5;
  --text: #18181b;
  --muted: #71717a;
  --border: #e4e4e7;
  --hover: #ececee;
  --primary: #18181b;
  --primary-text: #ffffff;
  --bad: #dc2626;
  --bad-bg: #fef2f2;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --good: #15803d;
  --good-bg: #f0fdf4;
  --link: #2563eb;
  --radius: 10px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --panel: #18181b;
    --side: #141416;
    --text: #f4f4f5;
    --muted: #a1a1aa;
    --border: #2a2a2e;
    --hover: #232327;
    --primary: #f4f4f5;
    --primary-text: #18181b;
    --bad: #f87171;
    --bad-bg: #2a1515;
    --warn: #fbbf24;
    --warn-bg: #2a2213;
    --good: #4ade80;
    --good-bg: #13261a;
    --link: #60a5fa;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--link); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.pad { padding: 0 12px; }
.warn { color: var(--warn); }
.bad-text { color: var(--bad); font-weight: 600; }
.splash { display: grid; place-items: center; min-height: 100vh; color: var(--muted); gap: 12px; }

/* buttons */
.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 500;
  white-space: nowrap;
}
.btn:hover { background: var(--hover); }
.btn.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.btn.primary:hover { opacity: 0.9; }
.btn.danger { color: var(--bad); }
.btn.sm { padding: 5px 10px; font-size: 13px; }
.link-btn { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 6px 0; font-size: 13px; text-align: left; }
.link-btn:hover { color: var(--text); }
.icon-btn { background: none; border: 0; font-size: 18px; color: var(--muted); cursor: pointer; padding: 4px 8px; border-radius: 6px; }
.icon-btn:hover { background: var(--hover); }

/* inputs */
input:not([type="checkbox"]), select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 8px;
  padding: 9px 11px;
  outline: none;
  font-size: 16px; /* stops iOS zooming in on focus */
}
input:focus, select:focus, textarea:focus { border-color: var(--muted); }
textarea { resize: vertical; }
label { display: grid; gap: 4px; font-size: 13px; font-weight: 500; color: var(--muted); }
label > input, label > select, label > textarea { color: var(--text); font-weight: 400; }
label .muted { font-weight: 400; }
.check-row { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 14px; font-weight: 400; }
.check-row input { width: 18px; height: 18px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

/* layout */
.layout { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--side);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 14px 10px;
  padding-top: max(14px, env(safe-area-inset-top));
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; padding: 4px 10px 14px; }
nav { display: grid; gap: 2px; }
.nav-heading { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; padding: 16px 10px 6px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; border: 0; background: none; text-align: left;
  padding: 7px 10px; border-radius: 8px; cursor: pointer;
}
.nav-item:hover { background: var(--hover); }
.nav-item.active { background: var(--panel); box-shadow: 0 0 0 1px var(--border); font-weight: 600; }
.nav-item.add { color: var(--muted); }
.nav-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.count { font-size: 12px; color: var(--muted); min-width: 20px; text-align: center; }
.count.bad { background: var(--bad); color: #fff; border-radius: 10px; padding: 0 6px; font-weight: 600; }
.sidebar-foot { margin-top: auto; padding: 16px 10px 4px; display: grid; gap: 2px; padding-bottom: max(4px, env(safe-area-inset-bottom)); }

.avatar {
  --hue: 220;
  display: inline-grid; place-items: center; flex: none;
  width: 26px; height: 26px; border-radius: 50%;
  background: hsl(var(--hue) 70% 88%); color: hsl(var(--hue) 55% 30%);
  font-size: 11px; font-weight: 700;
}
@media (prefers-color-scheme: dark) {
  .avatar { background: hsl(var(--hue) 35% 25%); color: hsl(var(--hue) 70% 85%); }
}
.avatar.icon { background: var(--hover); color: var(--muted); font-size: 14px; }
.avatar.lg { width: 38px; height: 38px; font-size: 14px; }
.avatar.xs { width: 16px; height: 16px; font-size: 8px; }

.main { min-width: 0; }
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 28px 10px;
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.topbar h1 { margin: 0; font-size: 22px; line-height: 1.2; }
.topbar .sub { color: var(--muted); font-size: 13px; }
.menu-btn { display: none; border: 0; background: none; font-size: 22px; padding: 4px 8px; margin-left: -8px; cursor: pointer; }
.content { padding: 6px 28px 80px; max-width: 820px; }

/* quick add */
.quick { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; margin-bottom: 22px; }
.quick-row { display: flex; gap: 8px; }
.quick-row input { border: 0; padding: 8px 6px; }
.quick-more { display: none; gap: 10px; padding: 10px 4px 4px; }
.quick.open .quick-more { display: grid; }
.more-toggle { padding: 4px 6px 0; }

/* tasks */
.group { margin-bottom: 22px; }
.group h2 { font-size: 13px; font-weight: 600; color: var(--muted); margin: 0 0 6px; display: flex; gap: 8px; align-items: center; }
.group h2 span { font-weight: 400; }
.group.bad h2 { color: var(--bad); }
.task {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 11px 12px; margin-bottom: 6px; cursor: pointer;
}
.task:hover { border-color: var(--muted); }
.task.is-overdue { border-left: 3px solid var(--bad); }
.check {
  flex: none; width: 22px; height: 22px; margin-top: 1px;
  border-radius: 50%; border: 2px solid var(--muted); background: none;
  display: grid; place-items: center; cursor: pointer; font-size: 12px; font-weight: 700; padding: 0;
}
.check:hover { border-color: var(--good); background: var(--good-bg); }
.task.is-done .check { background: var(--good); border-color: var(--good); color: #fff; }
.task.is-done .task-title { text-decoration: line-through; color: var(--muted); }
.task-body { min-width: 0; flex: 1; }
.task-title { font-weight: 500; overflow-wrap: anywhere; }
.meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; padding: 2px 8px; border-radius: 999px;
  background: var(--hover); color: var(--muted); text-decoration: none; max-width: 100%;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.chip.bad { background: var(--bad-bg); color: var(--bad); font-weight: 600; }
.chip.warn { background: var(--warn-bg); color: var(--warn); font-weight: 600; }
.chip.link { color: var(--link); }
.chip.link:hover { text-decoration: underline; }
.chip.ghost { background: none; padding-left: 0; }
.empty { color: var(--muted); padding: 30px 0; text-align: center; }
.done-toggle { margin: 4px 0 10px; }
.group.done .task { opacity: 0.75; }

/* dialog */
dialog {
  border: 1px solid var(--border); border-radius: 14px; padding: 0;
  background: var(--panel); color: var(--text);
  width: min(560px, calc(100vw - 32px)); max-height: calc(100vh - 48px);
  box-shadow: 0 20px 60px rgb(0 0 0 / 0.25);
}
dialog::backdrop { background: rgb(0 0 0 / 0.35); }
.sheet { display: grid; gap: 14px; padding: 18px 20px 20px; }
dialog.wide { width: min(680px, calc(100vw - 32px)); }
.sheet-head { display: flex; align-items: center; justify-content: space-between; }
.sheet-head h2 { margin: 0; font-size: 18px; }
.sheet h3 { margin: 10px 0 0; font-size: 15px; }
.sheet-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.notes-preview { font-size: 14px; white-space: pre-wrap; overflow-wrap: anywhere; background: var(--hover); border-radius: 8px; padding: 8px 10px; }
.people-list { display: grid; gap: 8px; }
.person-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; }
.person-row.archived { opacity: 0.6; }
.person-info { flex: 1; min-width: 160px; }
.person-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 11px; background: var(--hover); color: var(--muted); padding: 1px 7px; border-radius: 999px; font-weight: 600; }
.tag.good { background: var(--good-bg); color: var(--good); }
.tag.bad { background: var(--bad-bg); color: var(--bad); }
.email-log { display: grid; gap: 8px; max-height: 260px; overflow: auto; }
.email-row { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: min(380px, 100%); text-align: center; display: grid; gap: 10px; justify-items: center; }
.login-card h1 { margin: 6px 0 0; }
.login-card p { margin: 0; }
.login-card form { display: grid; gap: 10px; width: 100%; margin-top: 6px; }

#toast {
  position: fixed; left: 50%; bottom: max(24px, env(safe-area-inset-bottom)); transform: translate(-50%, 20px);
  background: var(--primary); color: var(--primary-text); padding: 10px 16px; border-radius: 10px;
  font-size: 14px; opacity: 0; pointer-events: none; transition: 0.2s; z-index: 50; max-width: calc(100vw - 32px);
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

.scrim { display: none; }

/* phone */
@media (max-width: 760px) {
  .layout { display: block; }
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: 280px; z-index: 30;
    transform: translateX(-100%); transition: transform 0.22s ease, visibility 0.22s;
    visibility: hidden;
  }
  body.nav-open .sidebar { transform: none; visibility: visible; box-shadow: 0 0 40px rgb(0 0 0 / 0.2); }
  body.nav-open .scrim { display: block; position: fixed; inset: 0; background: rgb(0 0 0 / 0.35); z-index: 20; }
  .menu-btn { display: block; }
  .topbar { padding: 12px 16px 8px; padding-top: max(12px, env(safe-area-inset-top)); }
  .topbar h1 { font-size: 19px; }
  .content { padding: 4px 12px 80px; }
  .grid2 { grid-template-columns: 1fr 1fr; }
  .grid2 label:first-child { grid-column: 1 / -1; }
  dialog {
    width: 100vw; max-width: 100vw; max-height: 92vh; margin: auto 0 0; border-radius: 16px 16px 0 0;
    border-bottom: 0;
  }
  .sheet { padding-bottom: max(20px, env(safe-area-inset-bottom)); }
  dialog.wide { width: 100vw; }
}