/* === VARIÁVEIS GERAIS === */
:root {
  --roxo-escuro: #1E1939;
  --roxo-medio: #3b3570;
  --amarelo: #E7FF14;
  --cinza-claro: #f7f7fb;
  --branco: #fff;
  --erro: #e63946;
  --sucesso: #38b000;
  --transicao: all 0.3s ease;
}

/* === RESET === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Montserrat", sans-serif;
}

/* === LAYOUT GLOBAL === */
body {
  background: var(--branco);
  color: var(--roxo-escuro);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* === CABEÇALHO FIXO === */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--branco);
  border-bottom: 2px solid #f0f0f0;
  box-shadow: 0 3px 10px rgba(0,0,0,0.05);
  z-index: 100;
  padding: 35px 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

header img {
  height: 60px;
  width: auto;
  animation: fadeInLogo 0.8s ease forwards;
}

@keyframes fadeInLogo {
  from { opacity: 0; transform: translateY(-15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === CONTEÚDO CENTRAL === */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 120px; /* compensar header fixo */
  padding-bottom: 60px;
}

/* === CARD DO FORM === */
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--branco);
  border-radius: 16px;
  padding: 40px 45px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  text-align: center;
  animation: fadeInUp 0.7s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === TÍTULO === */
.auth-card h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--roxo-escuro);
  margin-bottom: 25px;
  position: relative;
}

.auth-card h1::after {
  content: "";
  width: 60px;
  height: 3px;
  border-radius: 2px;
  background: var(--amarelo);
  display: block;
  margin: 10px auto 0;
  animation: slideBar 1s ease forwards;
}

@keyframes slideBar {
  from { width: 0; opacity: 0; }
  to { width: 60px; opacity: 1; }
}

/* === FORM === */
form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

label {
  text-align: left;
  font-weight: 600;
  color: var(--roxo-escuro);
  margin-top: 10px;
}

input {
  padding: 12px 16px;
  border-radius: 10px;
  border: 2px solid #eaeaea;
  outline: none;
  font-size: 15px;
  transition: var(--transicao);
  background: #fafafa;
}

input:focus {
  border-color: var(--amarelo);
  box-shadow: 0 0 6px rgba(231, 255, 20, 0.4);
  background: #fff;
}

/* === BOTÃO === */
button {
  margin-top: 8px;
  padding: 14px 20px;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--roxo-escuro), var(--roxo-medio));
  color: var(--branco);
  font-size: 16px;
  transition: var(--transicao);
  box-shadow: 0 6px 15px rgba(30,25,57,0.2);
}

button:hover {
  background: var(--amarelo);
  color: var(--roxo-escuro);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(231,255,20,0.25);
}

button:active {
  transform: scale(0.97);
}

/* === MENSAGEM DE STATUS === */
#msg {
  margin-top: 15px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  animation: fadeInMsg 0.5s forwards;
}

@keyframes fadeInMsg {
  to { opacity: 1; transform: translateY(0); }
}

#msg.success { color: var(--sucesso); }
#msg.error { color: var(--erro); }

/* === LINK VOLTAR === */
.back-link {
  display: inline-block;
  margin-top: 20px;
  font-weight: 600;
  color: var(--roxo-medio);
  text-decoration: none;
}

.back-link:hover {
  color: var(--amarelo);
}

/* === FOOTER (OPCIONAL) === */
footer {
  text-align: center;
  padding: 20px 0;
  font-size: 13px;
  color: #888;
}

/* === RESPONSIVIDADE === */
@media (max-width: 480px) {
  header img {
    height: 45px;
  }

  .auth-card {
    padding: 30px 25px;
  }

  .auth-card h1 {
    font-size: 20px;
  }

  button {
    font-size: 15px;
  }
}