/* =========================================================
   Botões do sistema: um único modelo (formato, tamanho e cor por tema).

   Variantes:  .btn-primary (ação principal)  .btn-secondary (neutro, contorno)
               .btn-danger (exclusão, contorno vermelho)
   Tamanhos:   padrão (40px)  .btn-sm (32px)  .btn-lg (46px)
   Largura:    .btn-block / .btn-full
   Ícone:      .icon-btn (editar/excluir em linhas de lista)

   Nomes antigos (btn-save, btn-filter, btn-outline, btn-danger-outline) seguem
   funcionando e caem numa das variantes acima.

   Carregado por includes/head_body.php, depois do CSS de cada tela.
   O prefixo ":root body" dá peso para vencer regras antigas de página; este
   arquivo não mexe em largura, margem nem posição (isso é layout da tela).
   ========================================================= */

:root {
  /* verde e vermelho vêm do tema (theme.css) */
  --btn-primary-bg: var(--dash-accent);
  --btn-primary-bg-hover: #4ade80;
  --btn-primary-text: #05210f;
  --btn-danger: var(--dash-negative);
  --btn-danger-text: #ffffff;
  --btn-ring: rgba(34, 197, 94, 0.5);
}

[data-theme="light"] {
  --btn-primary-bg-hover: #15803d;
  --btn-primary-text: #ffffff;
  --btn-ring: rgba(22, 163, 74, 0.45);
}

[data-theme="cream"] {
  --btn-primary-bg-hover: #1f4f36;
  --btn-primary-text: #fbf8f1;
  --btn-ring: rgba(44, 107, 74, 0.45);
}

/* ---------- forma e tamanho (todas as variantes) ---------- */

:root body :is(.btn, .btn-primary, .btn-save, .btn-filter,
               .btn-secondary, .btn-outline,
               .btn-danger, .btn-danger-outline) {
  display: inline-flex;
  box-sizing: border-box;
  max-width: 100%;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 9px 18px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 8px;
  background-image: none;
  box-shadow: none;
  transform: none;
  opacity: 1;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}

/* o JS esconde botões com a classe .hidden */
:root body :is(.btn, .btn-primary, .btn-save, .btn-filter,
               .btn-secondary, .btn-outline,
               .btn-danger, .btn-danger-outline).hidden {
  display: none;
}

:root body :is(.btn-sm) {
  min-height: 32px;
  padding: 6px 13px;
  font-size: 13px;
  border-radius: 8px;
}

:root body :is(.btn-lg) {
  min-height: 46px;
  padding: 12px 26px;
  font-size: 15px;
}

:root body :is(.btn-block, .btn-full) {
  width: 100%;
}

/* ---------- primário ---------- */

:root body :is(.btn-primary, .btn-save, .btn-filter) {
  background-color: var(--btn-primary-bg);
  border-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

:root body :is(.btn-primary, .btn-save, .btn-filter):hover:not(:disabled) {
  background-color: var(--btn-primary-bg-hover);
  border-color: var(--btn-primary-bg-hover);
  color: var(--btn-primary-text);
  transform: none;
  box-shadow: none;
}

/* ---------- secundário (contorno neutro) ---------- */

:root body :is(.btn-secondary, .btn-outline) {
  background-color: transparent;
  border-color: var(--dash-btn-outline-border);
  color: var(--dash-btn-outline-text);
}

:root body :is(.btn-secondary, .btn-outline):hover:not(:disabled) {
  background-color: var(--dash-btn-outline-hover-bg);
  border-color: var(--dash-btn-outline-border);
  color: var(--dash-title);
  transform: none;
  box-shadow: none;
}

/* ---------- perigo (contorno vermelho; preenche ao passar o mouse) ---------- */

:root body :is(.btn-danger, .btn-danger-outline) {
  background-color: transparent;
  border-color: color-mix(in srgb, var(--btn-danger) 50%, transparent);
  color: var(--btn-danger);
}

:root body :is(.btn-danger, .btn-danger-outline):hover:not(:disabled) {
  background-color: var(--btn-danger);
  border-color: var(--btn-danger);
  color: var(--btn-danger-text);
  transform: none;
  box-shadow: none;
}

/* confirmação de exclusão (modal): perigo preenchido, para destacar */
:root body .confirm-actions .btn-danger {
  background-color: var(--btn-danger);
  border-color: var(--btn-danger);
  color: var(--btn-danger-text);
}

:root body .confirm-actions .btn-danger:hover:not(:disabled) {
  background-color: color-mix(in srgb, var(--btn-danger) 85%, #000);
  border-color: color-mix(in srgb, var(--btn-danger) 85%, #000);
}

/* ---------- estados ---------- */

:root body :is(.btn, .btn-primary, .btn-save, .btn-filter,
               .btn-secondary, .btn-outline,
               .btn-danger, .btn-danger-outline):focus-visible {
  outline: 3px solid var(--btn-ring);
  outline-offset: 2px;
}

:root body :is(.btn, .btn-primary, .btn-save, .btn-filter,
               .btn-secondary, .btn-outline,
               .btn-danger, .btn-danger-outline):disabled,
:root body :is(.btn-primary, .btn-secondary, .btn-danger)[aria-disabled="true"] {
  opacity: .5;
  cursor: not-allowed;
}

/* ---------- botão de ícone (editar / excluir em listas) ---------- */

:root body .icon-btn {
  display: inline-flex;
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 15px;
  line-height: 1;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  box-shadow: none;
  transform: none;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease;
}

:root body .icon-btn:hover {
  background: var(--dash-btn-outline-hover-bg);
  border-color: var(--dash-card-border);
  transform: none;
}

:root body .icon-btn.delete:hover {
  background: color-mix(in srgb, var(--btn-danger) 14%, transparent);
  border-color: color-mix(in srgb, var(--btn-danger) 40%, transparent);
}

:root body .icon-btn:focus-visible {
  outline: 3px solid var(--btn-ring);
  outline-offset: 2px;
}