html { scroll-behavior: smooth; }

body {
  font-family: var(--fonte-principal);
  font-weight: var(--peso-regular);
  font-size: var(--texto-base);
  color: var(--cor-texto);
  background: var(--cor-bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(255, 255, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(231, 79, 28, 0.25) 0%, transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============ HEADER ============ */
.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--espaco-md);
  padding: 1rem clamp(1rem, 3vw, 2rem);
  background: rgba(237, 114, 3, 0.88);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--cor-borda-suave-sobre-laranja);
}
.app-header__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.app-header__logo {
  height: 44px;
  width: auto;
  display: block;
}
.logo-sep {
  color: rgba(255, 255, 255, 0.5);
  font-weight: var(--peso-bold);
}
.logo-sub {
  font-weight: var(--peso-medium);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}
@media (max-width: 520px) {
  .logo-sep, .logo-sub { display: none; }
  .app-header__logo { height: 36px; }
}

.app-header__progress { flex: 1; max-width: 420px; }
.progress {
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  overflow: hidden;
}
.progress__bar {
  height: 100%;
  background: var(--bild-branco);
  transition: width var(--transicao-suave);
  border-radius: 999px;
}

/* ============ SCREENS ============ */
.screens {
  flex: 1;
  position: relative;
  width: 100%;
}
.screen {
  display: none;
  animation: screenIn var(--transicao-suave) both;
}
.screen--active { display: block; }
.screen__inner {
  max-width: var(--max-conteudo);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 6rem) clamp(1.25rem, 4vw, 3rem);
}
.screen__inner--narrow { max-width: var(--max-estreito); }
.screen__inner--center {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

@keyframes screenIn {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ============ TYPOGRAPHY ============ */
.eyebrow {
  display: inline-block;
  font-weight: var(--peso-semibold);
  font-size: var(--texto-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 1rem;
  padding: 0.4rem 0.9rem;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
}
.headline {
  font-weight: var(--peso-black);
  font-size: var(--texto-3xl);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--cor-texto);
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 12px rgba(29, 2, 27, 0.12);
}
.headline strong {
  color: var(--bild-branco);
  font-weight: var(--peso-black);
  background: rgba(29, 2, 27, 0.18);
  padding: 0 0.2em;
  border-radius: 4px;
}
.lede {
  font-size: var(--texto-lg);
  color: var(--cor-texto-secundario);
  max-width: 640px;
  margin-bottom: 2.5rem;
  font-weight: var(--peso-regular);
  line-height: 1.5;
}
.fineprint {
  margin-top: 1rem;
  font-size: var(--texto-xs);
  color: var(--cor-texto-muted);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.8rem;
  font-weight: var(--peso-bold);
  font-size: var(--texto-base);
  border-radius: var(--raio-borda);
  transition: transform var(--transicao-rapida), background var(--transicao-rapida), color var(--transicao-rapida), box-shadow var(--transicao-rapida), border-color var(--transicao-rapida);
  border: 2px solid transparent;
  cursor: pointer;
  line-height: 1;
  white-space: nowrap;
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Primário sobre fundo laranja: branco invertido */
.btn--primary {
  background: var(--bild-branco);
  color: var(--bild-laranja);
  box-shadow: 0 8px 24px rgba(29, 2, 27, 0.22);
}
.btn--primary:hover:not(:disabled) {
  background: var(--bild-laranja-escuro);
  color: var(--bild-branco);
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 12px 28px rgba(29, 2, 27, 0.28);
}
.btn--primary:active:not(:disabled) {
  transform: translateY(0) scale(0.99);
}

/* Secundário sobre fundo laranja: outline branco transparente */
.btn--ghost {
  background: transparent;
  color: var(--bild-branco);
  border-color: var(--cor-borda-sobre-laranja);
}
.btn--ghost:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--bild-branco);
}

.btn--large {
  padding: 1.15rem 2.25rem;
  font-size: var(--texto-lg);
}
.btn--block { width: 100%; justify-content: center; }

/* ============ FOOTER ============ */
.app-footer {
  padding: 2rem clamp(1rem, 3vw, 2rem);
  border-top: 1px solid var(--cor-divider);
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-footer__logo {
  height: 24px;
  width: auto;
  opacity: 0.85;
}

/* ============ LOADER ============ */
.loader {
  width: 72px;
  height: 72px;
  margin-bottom: 2rem;
  display: grid;
  place-items: center;
}
.loader__ring {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.22);
  border-top-color: var(--bild-branco);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }