/* Layout: barra superior fixa + faixa horizontal de colunas que rola de lado
   (no celular, uma coluna por tela, deslizando). Visual de prancheta de concreto. */
:root {
  --bg: #e6ebee;          /* concreto claro, viés azul */
  --surface: #f4f7f8;     /* coluna */
  --card: #ffffff;
  --fg: #1b2227;
  --muted: #5b6770;
  --line: #ccd5db;
  --accent: #1e5d8a;      /* azul de prancha */
  --accent-fg: #ffffff;
  --accent-soft: #d9e7f1;
  --danger: #b3261e;
  --danger-soft: #f7dedb;
  --overlay: rgba(18, 26, 32, .45);
  --on-user: #ffffff;  /* letra sobre a cor da pessoa */
  --shadow: 0 1px 0 rgba(20, 32, 42, .07), 0 1px 3px rgba(20, 32, 42, .10);
  --shadow-lift: 0 10px 24px rgba(20, 32, 42, .22);

  --font-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --col-w: 288px;
  --r: 8px;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12171b; --surface: #1b2227; --card: #252e34; --fg: #e3e9ed; --muted: #97a4ae;
    --line: #34414a; --accent: #6aa8d6; --accent-fg: #0c1922; --accent-soft: #1c3446;
    --danger: #f08a80; --danger-soft: #3d1f1c; --overlay: rgba(0, 0, 0, .6);
    --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 1px 3px rgba(0, 0, 0, .35);
    --shadow-lift: 0 10px 24px rgba(0, 0, 0, .55);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12171b; --surface: #1b2227; --card: #252e34; --fg: #e3e9ed; --muted: #97a4ae;
  --line: #34414a; --accent: #6aa8d6; --accent-fg: #0c1922; --accent-soft: #1c3446;
  --danger: #f08a80; --danger-soft: #3d1f1c; --overlay: rgba(0, 0, 0, .6);
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 1px 3px rgba(0, 0, 0, .35);
  --shadow-lift: 0 10px 24px rgba(0, 0, 0, .55);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 400 14px/1.45 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 10; background: var(--surface);
}
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 12.5px; }

#app { height: 100%; display: flex; flex-direction: column; }

/* ---------- Barra superior ---------- */
.topbar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5;
  background: var(--surface); border-bottom: 1px solid var(--line);
}
.topbar-in {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding-block: 10px; padding-left: var(--gutter-l); padding-right: var(--gutter-r);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark {
  width: 22px; height: 22px; flex: none; border-radius: 3px;
  /* seção de viga pré-moldada estilizada */
  background:
    linear-gradient(var(--accent), var(--accent)) top / 100% 5px no-repeat,
    linear-gradient(var(--accent), var(--accent)) center / 6px 100% no-repeat,
    linear-gradient(var(--accent), var(--accent)) bottom / 70% 5px no-repeat;
}
.brand h1 {
  margin: 0; font: 700 22px/1 var(--font-display); letter-spacing: .02em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.who {
  display: flex; align-items: center; gap: 8px; padding: 4px 10px 4px 4px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--card);
}
.who:hover { border-color: var(--accent); }
.avatar {
  display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--on-user); font: 600 13px/1 var(--font-body);
}
.who-name { font-weight: 500; }

/* ---------- Quadro ---------- */
.board {
  flex: 1; min-height: 0; display: flex; align-items: flex-start; gap: 12px;
  overflow-x: auto; overflow-y: hidden;
  padding-block: 16px; padding-left: var(--gutter-l); padding-right: var(--gutter-r);
  scroll-padding-left: var(--gutter-l);
}
.columns { display: flex; align-items: flex-start; gap: 12px; height: 100%; }

.col {
  width: var(--col-w); flex: none; max-height: 100%;
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
}
.col-head {
  display: flex; align-items: center; gap: 8px; padding: 10px 8px 6px 12px;
  cursor: grab; user-select: none;
}
.col-head:active { cursor: grabbing; }
.col-title {
  flex: 1; min-width: 0; margin: 0; padding: 2px 4px; border-radius: 4px;
  font: 700 18px/1.15 var(--font-display); letter-spacing: .03em; text-transform: uppercase;
  overflow-wrap: anywhere; cursor: text;
}
.col-title:hover { background: var(--accent-soft); }
.col-title-input {
  flex: 1; min-width: 0; padding: 2px 6px; border: 1px solid var(--accent); border-radius: 4px;
  background: var(--card); font: 700 18px/1.15 var(--font-display); letter-spacing: .03em; text-transform: uppercase;
}
.col-count {
  font: 500 12px/1 var(--font-mono); color: var(--muted);
  padding: 3px 7px; border-radius: 999px; background: var(--bg);
}
.icon-btn {
  width: 30px; height: 30px; flex: none; display: grid; place-items: center;
  border: 0; border-radius: 6px; background: transparent; color: var(--muted); font-size: 16px;
}
.icon-btn:hover { background: var(--accent-soft); color: var(--fg); }

.card-list {
  display: flex; flex-direction: column; gap: 8px;
  min-height: 12px; padding: 4px 8px 8px; overflow-y: auto;
}
.card {
  background: var(--card); border: 1px solid transparent; border-radius: 6px;
  padding: 10px 12px; box-shadow: var(--shadow); cursor: pointer;
}
.card:hover { border-color: var(--accent); }
.card-title { overflow-wrap: anywhere; }
.card-ghost { opacity: .35; }
.card-chosen { box-shadow: var(--shadow-lift); }
.card-drag { transform: rotate(2deg); }
.col-ghost { opacity: .4; }

.add-card {
  margin: 0 8px 8px; padding: 8px 10px; text-align: left; border: 0; border-radius: 6px;
  background: transparent; color: var(--muted);
}
.add-card:hover { background: var(--accent-soft); color: var(--fg); }

.col-add {
  width: var(--col-w); flex: none; padding: 12px 14px; text-align: left;
  border: 1px dashed var(--line); border-radius: var(--r); background: transparent; color: var(--muted);
  font-weight: 500;
}
.col-add:hover { border-color: var(--accent); color: var(--accent); }
.col-new { padding: 10px; gap: 8px; }

.composer { padding: 0 8px 8px; display: flex; flex-direction: column; gap: 8px; }
.composer-input {
  width: 100%; padding: 8px 10px; resize: vertical;
  border: 1px solid var(--accent); border-radius: 6px; background: var(--card);
}
.composer-actions { display: flex; gap: 6px; }

/* ---------- Botões ---------- */
.btn {
  padding: 8px 14px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--card); font-weight: 500;
}
.btn.sm { padding: 5px 10px; font-size: 13px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--fg); background: var(--accent-soft); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: var(--card); }
.btn.danger-ghost { background: transparent; border-color: transparent; color: var(--danger); margin-right: auto; }
.btn.danger-ghost:hover { background: var(--danger-soft); }

/* ---------- Janelas ---------- */
.overlay {
  position: fixed; inset: 0; z-index: 50; background: var(--overlay);
  display: grid; place-items: start center; overflow-y: auto;
  padding: max(48px, env(safe-area-inset-top, 0px)) var(--gutter-r) 24px var(--gutter-l);
}
.dialog {
  width: min(480px, 100%); background: var(--surface); border-radius: 10px;
  box-shadow: var(--shadow-lift); border: 1px solid var(--line);
}
.dialog-wide { width: min(720px, 100%); }
.dialog-head { display: flex; align-items: center; gap: 8px; padding: 12px 12px 4px 18px; }
.dialog-head h3 { flex: 1; margin: 0; font: 700 20px/1.2 var(--font-display); letter-spacing: .02em; }
.dialog-body { padding: 8px 18px 16px; }
.dialog-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 18px; border-top: 1px solid var(--line); }
.confirm-msg { margin: 4px 0; }

.field-label {
  display: block; margin-bottom: 4px; color: var(--muted);
  font-size: 11.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
}
.field-input {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--card); resize: vertical;
}
.field-input:focus { border-color: var(--accent); outline: none; }
.title-input { font-weight: 600; font-size: 16px; }
.meta-line { margin: 10px 0 0; color: var(--muted); }
.meta-line strong { color: var(--fg); font-weight: 500; }
.hint { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

.who-list { display: flex; flex-direction: column; gap: 8px; }
.who-list .hint { margin: 0 0 4px; }
.who-option {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; text-align: left;
  border: 1px solid var(--line); border-radius: 8px; background: var(--card); font-weight: 500;
}
.who-option:hover, .who-option.is-me { border-color: var(--accent); }

/* ---------- Menu e avisos ---------- */
.menu {
  position: fixed; z-index: 60; min-width: 170px; padding: 4px;
  background: var(--card); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow-lift);
}
.menu-item {
  display: block; width: 100%; padding: 8px 10px; text-align: left;
  border: 0; border-radius: 5px; background: transparent;
}
.menu-item:hover, .menu-item:focus-visible { background: var(--accent-soft); outline: none; }
.menu-item.danger { color: var(--danger); }
.menu-item.danger:hover { background: var(--danger-soft); }

.toast {
  position: fixed; z-index: 70; left: 50%; transform: translateX(-50%);
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  max-width: calc(100% - 32px); padding: 10px 16px; border-radius: 8px;
  background: var(--fg); color: var(--bg); box-shadow: var(--shadow-lift);
  transition: opacity .3s;
}
.toast-error { background: var(--danger); color: var(--card); }
.toast.out { opacity: 0; }
.fatal { padding: 24px; color: var(--danger); }

/* ---------- Celular: uma coluna por tela ---------- */
@media (max-width: 600px) {
  :root { --col-w: calc(100vw - 48px); }
  .board { scroll-snap-type: x mandatory; gap: 10px; }
  .columns { gap: 10px; }
  .col, .col-add { scroll-snap-align: start; }
  .brand h1 { font-size: 20px; }
}

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

/* folga à direita no fim da rolagem horizontal */
.board::after { content: ""; flex: 0 0 1px; }
.topbar-actions { display: flex; align-items: center; gap: 6px; }

/* ---------- Login ---------- */
.login { flex: 1; display: grid; place-items: center; padding-block: 24px; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
.login-box { width: min(360px, 100%); display: flex; flex-direction: column; gap: 6px; padding: 28px 24px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); }
.login-brand { margin-bottom: 14px; }
.login-box .field-label { margin-top: 8px; }
.login-btn { margin-top: 14px; padding: 10px; }
.login-error { margin: 6px 0 0; color: var(--danger); }