/* ==========================================================================
   MERIDIAN DESIGN SYSTEM — Componentes
   Reproduz as secoes 5.1 a 5.5 de meridian-design-system.md.
   ========================================================================== */

/* ==========================================================================
   5.1. BOTOES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  box-shadow: var(--shadow-xs);
  text-decoration: none;
  white-space: nowrap;
}

/* Variantes */
.btn-primary { background-color: var(--brand-600); color: #ffffff; border-color: var(--brand-600); }
.btn-primary:hover { background-color: var(--brand-700); }

.btn-secondary { background-color: var(--surface-100); color: var(--surface-800); border-color: var(--surface-300); }
.btn-secondary:hover { background-color: var(--surface-200); }

.btn-danger { background-color: var(--danger-600); color: #ffffff; border-color: var(--danger-600); }
.btn-danger:hover { background-color: var(--danger-700); }

.btn-outline { background-color: #ffffff; color: var(--brand-700); border-color: var(--brand-300); }
.btn-outline:hover { background-color: var(--brand-50); }

/* Adicao ao design system: variante "fantasma", sem preenchimento nem borda.
   Existe para os gatilhos de menu (a engrenagem do cabecalho, o "..." do
   artigo), que sao acoes secundarias e nao devem competir com o conteudo ao
   redor. Mantem as mesmas medidas e estados de .btn. */
.btn-ghost {
  background-color: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--surface-500);
}

.btn-ghost:hover { background-color: var(--surface-100); color: var(--surface-800); }
.btn-ghost[aria-expanded="true"] { background-color: var(--surface-200); color: var(--surface-800); }

/* Tamanhos */
.btn-sm { height: 32px; padding: 0 10px; font-size: 12px; }
.btn-lg { height: 40px; padding: 0 16px; font-size: 14px; }

/* Estados (adicao de layout, mantendo os tokens do sistema) */
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
}

.btn-block { width: 100%; }

/* ==========================================================================
   5.2. FORMULARIOS E ENTRADAS
   ========================================================================== */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--surface-700);
}

.form-label .required {
  color: var(--danger-600);
  margin-left: 2px;
}

.input {
  width: 100%;
  height: 36px;
  padding: 0 12px;
  font-family: inherit;
  font-size: 14px;
  color: var(--surface-800);
  background-color: #ffffff;
  border: 1px solid var(--surface-300);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  transition: border-color 0.15s ease;
}

.input:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: var(--focus-ring);
}

.input-error {
  border-color: var(--danger-500);
}

.form-hint {
  font-size: 12px;
  color: var(--surface-500);
}

.form-error {
  font-size: 12px;
  color: var(--danger-600);
}

/* Variantes do .input para textarea e select, mantendo o mesmo desenho */
textarea.input {
  height: auto;
  min-height: 96px;
  padding: 10px 12px;
  line-height: 20px;
  resize: vertical;
}

select.input {
  appearance: none;
  padding-right: 30px;
  background-image: linear-gradient(45deg, transparent 50%, var(--surface-500) 50%),
                    linear-gradient(135deg, var(--surface-500) 50%, transparent 50%);
  background-position: calc(100% - 15px) 15px, calc(100% - 11px) 15px;
  background-size: 4px 4px, 4px 4px;
  background-repeat: no-repeat;
}

/* ==========================================================================
   5.3. BADGES E STATUS
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* Variantes */
.badge-success { background-color: var(--success-50); color: var(--success-600); border-color: var(--success-100); }
.badge-success .badge-dot { background-color: var(--success-500); }

.badge-warning { background-color: var(--warning-50); color: var(--warning-600); border-color: var(--warning-100); }
.badge-warning .badge-dot { background-color: var(--warning-500); }

.badge-danger { background-color: var(--danger-50); color: var(--danger-600); border-color: var(--danger-100); }
.badge-danger .badge-dot { background-color: var(--danger-500); }

.badge-info { background-color: var(--info-50); color: var(--info-600); border-color: var(--info-100); }
.badge-info .badge-dot { background-color: var(--info-500); }

.badge-neutral { background-color: var(--surface-100); color: var(--surface-600); border-color: var(--surface-200); }
.badge-neutral .badge-dot { background-color: var(--surface-400); }

/* ==========================================================================
   5.4. TABELAS DE ALTA DENSIDADE
   ========================================================================== */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--surface-200);
  border-radius: var(--radius-md);
  background-color: #ffffff;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.table th {
  height: 40px;
  padding: 0 12px;
  background-color: var(--surface-50);
  color: var(--surface-600);
  font-weight: 600;
  font-size: 12px;
  border-bottom: 1px solid var(--surface-200);
  white-space: nowrap;
}

.table td {
  height: 44px;
  padding: 0 12px;
  color: var(--surface-800);
  border-bottom: 1px solid var(--surface-100);
  white-space: nowrap;
}

.table tr:hover {
  background-color: var(--surface-50);
}

.table .font-mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

.table .text-right {
  text-align: right;
}

/* ==========================================================================
   5.5. MODAIS E OVERLAYS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(16, 24, 40, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  padding: 16px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-200);
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--surface-200);
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  background-color: var(--surface-50);
  border-top: 1px solid var(--surface-200);
}