/* Base — reset, tipografia, primitivos (button, input, label).
 *
 * Design system "Aurora" (tokens em tokens.css). Aqui ficam os primitivos
 * HTML nativos + utilitários. Componentes shared (card/badge/pill/table/
 * tabs/modal/toast/stat) vivem em components.css; o shell (topbar/sidebar/
 * login) em layout.css.
 */

/* ──────────── Reset minimalista ─────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

html {
  /* `color-scheme` é setado em tokens.css — não duplicar aqui */
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: var(--leading-normal);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01";  /* stylistic alternates quando a fonte suportar */
}

/* ──────────── Tipografia editorial ──────────────────────────────────── */

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text);
  text-wrap: balance;
}

h1 { font-size: var(--text-3xl); line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); font-weight: 800; }
h2 { font-size: var(--text-2xl); line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); font-weight: 700; }
h3 { font-size: var(--text-xl);  line-height: var(--leading-snug);  letter-spacing: var(--tracking-snug);  font-weight: 700; }
h4 { font-size: var(--text-lg);  line-height: var(--leading-snug);  letter-spacing: var(--tracking-snug);  font-weight: 600; }

p {
  margin: 0 0 var(--space-3);
  line-height: var(--leading-relaxed);
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 3px;
  transition: color var(--dur-instant) var(--ease-out);
}
a:hover { color: var(--accent); }

code, pre, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

hr {
  border: 0;
  height: 1px;
  background: var(--border);
  margin: var(--space-5) 0;
}

/* selection — tinge com o accent (violeta) suave */
::selection {
  background: var(--accent-soft);
  color: var(--text);
}

/* ──────────── Form primitives (input / textarea / select) ───────────── */

input, textarea, select, button {
  font: inherit;
  color: inherit;
  margin: 0;
  border-radius: var(--radius-md);
  outline: none;
}

input, textarea, select {
  display: block;
  width: 100%;
  height: 40px;
  padding: 0 var(--space-3);
  background: var(--surface-input);
  border: 1px solid var(--border);
  color: var(--text);
  transition:
    border-color var(--dur-instant) var(--ease-out),
    background   var(--dur-instant) var(--ease-out);
}

textarea {
  height: auto;
  min-height: 96px;
  padding: var(--space-2) var(--space-3);
  line-height: var(--leading-normal);
  resize: vertical;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: var(--space-6);
  /* chevron desenhado via background gradient — sem dependência de svg externo */
  background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%),
                    linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
  background-position: calc(100% - 18px) 18px, calc(100% - 13px) 18px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

input:hover:not(:focus):not(:disabled),
textarea:hover:not(:focus):not(:disabled),
select:hover:not(:focus):not(:disabled) {
  border-color: var(--border-strong);
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent-line);
  background: var(--surface);
}

input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 0;
  border-color: var(--accent);
}

input:disabled, textarea:disabled, select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

input[aria-invalid="true"], textarea[aria-invalid="true"], select[aria-invalid="true"] {
  border-color: var(--color-danger);
}

/* checkbox / radio — minimal */
input[type="checkbox"], input[type="radio"] {
  width: 16px;
  height: 16px;
  padding: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

/* `label` é puro HTML — modules podem usá-lo livremente.
 * .field é o wrapper canônico recomendado (label + input + helper + error).
 * Sintaxe:
 *
 *   <div class="field">
 *     <label for="x">Nome</label>
 *     <input id="x" name="x" />
 *     <span class="field-helper">helper</span>
 *     <span class="field-error">erro</span>
 *   </div>
 */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.field > label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: var(--tracking-base);
}
.field-helper {
  font-size: var(--text-xs);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
}
.field-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
}

/* ──────────── Button — 5 variants × 3 sizes ─────────────────────────── */

button {
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 36px;
  padding: 0 var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-base);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  color: var(--text);
  transition:
    background  var(--dur-instant) var(--ease-out),
    border-color var(--dur-instant) var(--ease-out),
    color       var(--dur-instant) var(--ease-out),
    transform   var(--dur-instant) var(--ease-spring);
}

button:hover:not(:disabled) {
  background: var(--surface);
  border-color: var(--border-strong);
}

button:active:not(:disabled) {
  transform: scale(0.97);
}

button:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── variants ── */

/* Primária Aurora: gradiente violeta + glow no hover */
button.primary, .btn.primary {
  background: linear-gradient(135deg, var(--accent-500), var(--accent-700));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 22px -10px rgba(124, 58, 237, 0.65);
}
button.primary:hover:not(:disabled), .btn.primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-400), var(--accent-600));
  border-color: transparent;
  box-shadow: var(--glow-accent);
}

button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-2);
}
button.ghost:hover:not(:disabled) {
  background: var(--surface-raised);
  border-color: transparent;
  color: var(--text);
}

button.danger {
  background: transparent;
  border-color: rgba(184, 88, 77, 0.40);
  color: var(--color-danger);
}
button.danger:hover:not(:disabled) {
  background: var(--color-danger-bg);
  border-color: rgba(184, 88, 77, 0.60);
}

/* Variante "danger-ghost": deliberadamente *neutra* em repouso, vira vermelha
 * só no hover. Pra ações irreversíveis (Excluir projeto) que não devem
 * gritar visualmente — mas viram danger ao chegar perto. Reduz ansiedade
 * visual mas mantém o sinal antes do clique. */
button.danger-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-2);
}
button.danger-ghost:hover:not(:disabled) {
  background: var(--color-danger-bg);
  border-color: rgba(184, 88, 77, 0.60);
  color: var(--color-danger);
}
button.danger-ghost:focus-visible {
  box-shadow: 0 0 0 2px var(--color-danger-bg);
  color: var(--color-danger);
}

button.link {
  background: transparent;
  border-color: transparent;
  color: var(--accent);
  padding: 0;
  height: auto;
  font-weight: 500;
}
button.link:hover:not(:disabled) {
  background: transparent;
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--accent-hover);
}

/* ── sizes ── */

button.sm  { height: 28px; padding: 0 var(--space-3); font-size: var(--text-xs); }
button.lg  { height: 44px; padding: 0 var(--space-5); font-size: var(--text-md); }

/* ── modifiers ── */

button.icon {
  width: 36px;
  height: 36px;
  padding: 0;
}
button.icon.sm { width: 28px; height: 28px; }
button.icon.lg { width: 44px; height: 44px; }

button.block {
  display: flex;
  width: 100%;
}

/* pílula opt-in (ações compactas estilo Aurora) */
.btn-pill, button.pill-btn { border-radius: var(--radius-full); }

/* ──────────── Focus-visible padrão para qualquer interativo ─────────── */

:where(a, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ──────────── Scrollbars (webkit + firefox) ─────────────────────────── */

* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

::-webkit-scrollbar         { width: 10px; height: 10px; }
::-webkit-scrollbar-track   { background: transparent; }
::-webkit-scrollbar-thumb   {
  background: var(--border-strong);
  border-radius: var(--radius-full);
  border: 2px solid transparent;       /* inset via padding-box (independe do bg) */
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}
::-webkit-scrollbar-corner  { background: transparent; }

/* ──────────── Skip link — a11y mandatório ──────────────────────────── */

.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -200%);
  z-index: var(--z-toast);
  background: var(--accent);
  color: var(--accent-fg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translate(-50%, var(--space-2));
}

/* ──────────── Utilitários (helpers — usar com moderação) ────────────── */

.muted { color: var(--text-muted); }
.dim   { color: var(--text-dim); }
.mono  { font-family: var(--font-mono); }

.flex     { display: flex; }
.flex-1   { flex: 1; min-width: 0; }
.row      { display: flex; align-items: center; gap: var(--space-3); }
.col      { display: flex; flex-direction: column; gap: var(--space-3); }

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }

.tnum  { font-variant-numeric: tabular-nums; }

/* respeita hidden mesmo dentro de flex/grid */
[hidden] { display: none !important; }
.hidden-attr[hidden] { display: none !important; }

/* eyebrow — micro-label editorial (substitui o style="font-size:11px" inline) */
/* eyebrow — micro-label (linha própria, acima do título) */
.eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

/* ─────────────────────────────────────────────────────────────────────────
 * View transitions
 *
 * Duas camadas:
 *   A) Fallback CSS (qualquer browser): classes .is-leaving / .is-entering
 *      controladas por services/transitions.js
 *   B) View Transitions API nativa (Chrome 111+, FF 129+): customização
 *      dos pseudo-elementos ::view-transition-old/new
 *
 * Ambas usam --dur-base + --ease-out (vindos de tokens.css). Reduced
 * motion override global em tokens.css já desabilita.
 * ──────────────────────────────────────────────────────────────────── */

/* (A) Fallback CSS — fade-out + slide pequeno */
.is-leaving {
  opacity: 0;
  transform: translateY(-4px);
  transition:
    opacity   var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}
.is-entering {
  animation: view-enter var(--dur-base) var(--ease-out);
}
@keyframes view-enter {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* (B) View Transitions API nativa — customização do crossfade.
 *
 * `root` é a transição global default; `main-area` é a região central
 * (em layout.css). `topbar` e `sidebar` recebem nomes para que o
 * browser PRESERVE o snapshot (sem animação) entre rotas. */

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: var(--dur-base);
  animation-timing-function: var(--ease-out);
}
::view-transition-old(root) { animation-name: vt-leave; }
::view-transition-new(root) { animation-name: vt-enter; }

/* topbar / sidebar / project-head / project-tabs:
 * snapshots persistentes — sem animação. Quando o conteúdo desses
 * elementos não muda (mesmo projeto, troca de tab) o browser mantém o
 * snapshot estável e o menu NÃO pisca. */
::view-transition-old(topbar),
::view-transition-new(topbar),
::view-transition-old(sidebar),
::view-transition-new(sidebar),
::view-transition-old(project-head),
::view-transition-new(project-head),
::view-transition-old(project-tabs),
::view-transition-new(project-tabs) {
  animation: none;
}

/* project-tab-panel: SÓ ESSE bloco anima quando troca de tab.
 * Fade + leve translate, sem afetar header/tabs acima. */
::view-transition-old(project-tab-panel),
::view-transition-new(project-tab-panel) {
  animation-duration: var(--dur-base);
  animation-timing-function: var(--ease-out);
}
::view-transition-old(project-tab-panel) { animation-name: vt-leave; }
::view-transition-new(project-tab-panel) { animation-name: vt-enter; }

@keyframes vt-leave {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-4px); }
}
@keyframes vt-enter {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}