/* Checklist da mudanca — folha unica, sem dependencia externa.
   Direcao: calmo e denso, com hierarquia clara. Um acento apenas; o resto e
   neutro, para que prazo e criticidade sejam as unicas coisas que "gritam". */

:root {
  color-scheme: light dark;

  --bg: #f7f7f5;
  --card: #ffffff;
  --fg: #16181d;
  --dim: #5a616c;
  --faint: #8a919c;
  /* Tom para texto pequeno sobre fundo tonal (pílulas, contadores): precisa
     bater 4.5:1, senão prazo e contagem viram decoração ilegível. */
  --ink-2: #454c57;
  --line: #e8eaee;
  --line-soft: #f1f2f5;

  --accent: #2563eb;
  --accent-soft: #eff4ff;
  --done: #12a150;
  /* Tons de texto sobre o proprio fundo tonal: escurecidos para passar 4.5:1.
     O ambar "bonito" (#c2740a) dava 3.34 sobre o creme e o prazo ficava fraco. */
  --warn: #8a5300;
  --warn-soft: #fdf5e6;
  --crit: #b32126;
  --crit-soft: #fdf0f0;
  --crit-mark: #d13438;
  --warn-mark: #c2740a;

  --r: 14px;
  --shadow: 0 1px 2px rgba(16, 18, 25, .04), 0 4px 16px rgba(16, 18, 25, .05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f13;
    --card: #16191f;
    --fg: #e9ebef;
    --dim: #a2aab5;
    --faint: #7e8792;
    --ink-2: #c3cad3;
    --line: #242830;
    --line-soft: #1d2027;

    --accent: #5b8dff;
    --accent-soft: #182338;
    --done: #34d399;
    --warn: #f0b429;
    --warn-soft: #2a2213;
    --crit: #f87171;
    --crit-soft: #2c1719;
    --crit-mark: #f87171;
    --warn-mark: #f0b429;

    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 18px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 0 1rem 5rem;
  max-width: 680px;
  background: var(--bg);
  color: var(--fg);
  font: 400 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- cabecalho ---------- */

header { padding: 2.25rem 0 1.25rem; }

.head-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }

h1 {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 640;
  letter-spacing: -.025em;
}

.sub {
  margin: .3rem 0 0;
  color: var(--dim);
  font-size: .875rem;
  display: flex;
  align-items: center;
  gap: .45rem;
}

.live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--done);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--done) 18%, transparent);
  flex: 0 0 auto;
  transition: background .3s, box-shadow .3s;
}
.live.off { background: var(--faint); box-shadow: none; }

/* Anel de progresso: conic-gradient, sem SVG nem script de desenho. */
.ring {
  --p: 0;
  flex: 0 0 auto;
  width: 58px; height: 58px; border-radius: 50%;
  display: grid; place-items: center;
  background: conic-gradient(var(--done) calc(var(--p) * 1%), var(--line) 0);
  transition: background .45s ease;
}
.ring span {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--bg);
  display: grid; place-items: center;
  font-size: .95rem; font-weight: 620; letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.ring i { font-style: normal; font-size: .62rem; color: var(--dim); margin-left: 1px; }

.countdown {
  margin-top: 1rem;
  padding: .6rem .85rem;
  background: var(--accent-soft);
  border-radius: 10px;
  font-size: .84rem;
  color: var(--fg);
}
.countdown b { font-weight: 650; }

/* ---------- cartoes e secoes ---------- */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  margin-bottom: .85rem;
  overflow: hidden;
}

.sec-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .8rem 1rem .55rem;
}

h2 {
  margin: 0;
  font-size: .72rem;
  font-weight: 640;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--dim);
}

.tally {
  font-size: .7rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-2);
  background: var(--line-soft);
  padding: .12rem .45rem;
  border-radius: 20px;
}
.tally.full { color: var(--done); background: color-mix(in srgb, var(--done) 12%, transparent); }

ul { list-style: none; margin: 0; padding: 0; }

/* ---------- tarefa ---------- */

.task {
  display: flex; align-items: center; gap: .7rem;
  padding: .7rem 1rem;
  border-top: 1px solid var(--line-soft);
  position: relative;
  transition: background .15s;
}
.task:first-child { border-top: 0; }
@media (hover: hover) { .task:hover { background: var(--line-soft); } }

/* Criticidade como faixa lateral: le-se de relance, sem poluir o texto. */
.critical::before {
  content: '';
  position: absolute; left: 0; top: .55rem; bottom: .55rem;
  width: 3px; border-radius: 0 3px 3px 0;
  background: var(--crit-mark);
}
.critical.done::before { background: var(--faint); opacity: .5; }

.dot {
  flex: 0 0 auto;
  width: 20px; height: 20px; border-radius: 50%;
  border: 1.5px solid var(--line);
  background: transparent;
  padding: 0; cursor: pointer; position: relative;
  display: grid; place-items: center;
  transition: border-color .18s, background .18s, transform .12s;
}
.dot:active { transform: scale(.9); }
/* Alvo de toque de 44px sem alterar o desenho. */
.dot::after { content: ''; position: absolute; inset: -12px; }

.dot svg {
  width: 12px; height: 12px; fill: none;
  stroke: #fff; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round;
  opacity: 0; transform: scale(.5);
  transition: opacity .18s, transform .18s cubic-bezier(.2, 1.4, .5, 1);
}

.doing .dot { border-color: var(--warn-mark); border-style: dashed; background: var(--warn-soft); }
.done .dot { border-color: var(--done); background: var(--done); }
.done .dot svg { opacity: 1; transform: scale(1); }

.title { flex: 1 1 auto; font-size: .935rem; }
.done .title { color: var(--dim); text-decoration: line-through; text-decoration-thickness: 1px; }

.pill {
  flex: 0 0 auto;
  font-size: .72rem; font-variant-numeric: tabular-nums;
  color: var(--ink-2); background: var(--line-soft);
  padding: .14rem .42rem; border-radius: 20px;
  white-space: nowrap;
}
/* Estados aplicados pelo cliente conforme a data se aproxima. */
.pill.soon { color: var(--warn); background: var(--warn-soft); }
.pill.late { color: var(--crit); background: var(--crit-soft); font-weight: 600; }
.done .pill { color: var(--dim); background: var(--line-soft); font-weight: 400; }

.note {
  flex: 0 0 auto;
  min-width: 26px; height: 26px; padding: 0 .35rem;
  border-radius: 8px; cursor: pointer;
  border: 1px solid transparent; background: transparent;
  color: var(--faint); font-size: .74rem; font-variant-numeric: tabular-nums;
  transition: color .15s, background .15s, border-color .15s;
}
.note .plus { font-size: 1rem; line-height: 1; opacity: 0; transition: opacity .15s; }
@media (hover: hover) { .task:hover .note .plus { opacity: 1; } }
.note.has { color: var(--accent); background: var(--accent-soft); }
.note:hover { border-color: var(--line); color: var(--accent); }

/* ---------- formularios ---------- */

form { display: flex; gap: .5rem; padding: .35rem 1rem 1rem; }
.add form { flex-direction: column; }
.add .row { display: flex; gap: .5rem; flex-wrap: wrap; }

input, select, button {
  font: inherit;
  padding: .5rem .65rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--fg);
  transition: border-color .15s, box-shadow .15s;
}
input { flex: 1 1 auto; min-width: 0; }
input::placeholder { color: var(--faint); }
input:focus-visible, select:focus-visible, button:focus-visible {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
select { cursor: pointer; max-width: 42%; }
input[type=date] { flex: 0 0 auto; color: var(--dim); }

button[type=submit] {
  cursor: pointer; font-weight: 560;
  background: var(--accent); color: #fff; border-color: transparent;
  padding-inline: .9rem;
}
button[type=submit]:hover { filter: brightness(1.08); }
#cform button[type=submit], #tform button[type=submit] {
  flex: 0 0 auto; width: 38px; padding: 0; font-size: 1.05rem; line-height: 1;
}

.chk {
  display: flex; align-items: center; gap: .35rem;
  color: var(--dim); font-size: .82rem; white-space: nowrap; cursor: pointer;
  padding: 0 .2rem;
}
.chk input { flex: 0 0 auto; width: auto; accent-color: var(--crit-mark); }

/* ---------- comentarios ---------- */

.comments ul { padding: 0 1rem; }
.bubble { padding: .55rem 0; border-top: 1px solid var(--line-soft); }
.bubble:first-child { border-top: 0; }
.who {
  display: flex; align-items: center; gap: .4rem;
  font-size: .78rem; font-weight: 600; color: var(--dim);
}
.who time { margin-left: auto; font-weight: 400; color: var(--faint); font-size: .72rem; }
.av {
  width: 18px; height: 18px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: .62rem; color: #fff; background: var(--accent);
}
.av-nya { background: #a855f7; }
/* Apagar comentario e acao rara, entao fica apagado -- mas nunca invisivel.
   Esconder no repouso e revelar no hover deixaria o botao inalcancavel em
   qualquer aparelho que nao case com "(hover: none)", e esta lista e usada no
   celular durante a mudanca. Alvo de 44px pelo ::after, sem inchar o desenho. */
.drop {
  margin-left: .45rem; position: relative;
  /* 16px de caixa + 14px de folga de cada lado = alvo de 44px nos dois eixos.
     O "x" sozinho tem 11px de largura e ficaria abaixo do minimo. */
  width: 16px; height: 16px;
  border: 0; background: none; cursor: pointer;
  color: var(--faint); font-size: 1rem; line-height: 1;
  padding: 0; opacity: .4; transition: opacity .12s, color .12s;
}
.drop::after { content: ''; position: absolute; inset: -14px; }
.bubble:hover .drop, .drop:focus-visible { opacity: 1; }
.drop:hover, .drop:focus-visible { color: var(--crit-mark); }

.bubble p { margin: .2rem 0 0; font-size: .9rem; }
.empty { color: var(--faint); font-size: .85rem; padding: .3rem 0 .6rem; }

/* ---------- dialogo ---------- */

dialog {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--card);
  color: var(--fg);
  max-width: 460px; width: calc(100% - 2rem);
  padding: 1.15rem 0 .8rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .22);
}
dialog::backdrop { background: rgba(10, 12, 16, .5); backdrop-filter: blur(2px); }
dialog h3 { margin: 0 1rem .6rem; font-size: 1rem; font-weight: 620; letter-spacing: -.01em; }
#tdlg-list { padding: 0 1rem; max-height: 40vh; overflow-y: auto; }
.dlg-foot {
  display: flex; justify-content: space-between;
  padding: .2rem 1rem 0; border-top: 1px solid var(--line-soft); margin-top: .2rem;
}
.dlg-foot button {
  background: transparent; border-color: transparent; cursor: pointer;
  font-size: .84rem; color: var(--dim); padding: .5rem .2rem;
}
.dlg-foot .danger { color: var(--crit); }
.dlg-foot button:hover { text-decoration: underline; }

/* ---------- login ---------- */

.login { display: grid; place-items: center; min-height: 88vh; }
.login form {
  flex-direction: column; width: 270px; gap: .55rem;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r); box-shadow: var(--shadow);
  padding: 1.75rem 1.4rem;
}
.login .mark { font-size: 1.9rem; text-align: center; }
.login h1 { text-align: center; font-size: 1.3rem; }
.login .sub { justify-content: center; margin-bottom: .5rem; }
.err { color: var(--crit); font-size: .82rem; margin: 0; text-align: center; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}