/* Reset simples */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Tema base */
:root {
  --cor-fundo: #041528;        /* azul bem escuro */
  --cor-fundo-card: #061b34;
  --cor-primaria: #f7931e;     /* laranja */
  --cor-branco: #ffffff;
  --cor-texto: #e2e8f0;
  --cor-linha: rgba(148, 163, 184, 0.35);

  --max-width: 1200px;
  --radius: 16px;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.35);

  --font-principal: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-principal);
  background-color: var(--cor-fundo);
  color: var(--cor-texto);
  min-height: 100vh;
}

/* Container padrão */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem;
}

/* Header / Footer */
.site-header {
  border-bottom: 1px solid var(--cor-linha);
  background: rgba(4, 21, 40, 0.98);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.site-header__logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #f7931e, #f15a24);
  box-shadow: 0 0 18px rgba(247, 147, 30, 0.7);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--cor-linha);
  padding: 1.25rem 0 1.75rem;
  font-size: 0.8rem;
  color: rgba(226, 232, 240, 0.7);
  text-align: center;
}

/* Botão padrão */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.5rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn--primary {
  background: var(--cor-primaria);
  color: #04101f;
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

/* Responsivo básico */
@media (min-width: 768px) {
  .container {
    padding: 1.5rem 1.75rem;
  }
}