:root {
  --bg: #0f172a;
  --bg-grad-1: #0f172a;
  --bg-grad-2: #1e293b;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --border: #e2e8f0;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #b91c1c;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background: radial-gradient(1200px 600px at 20% -10%, #1e3a8a 0%, transparent 55%),
              linear-gradient(160deg, var(--bg-grad-1), var(--bg-grad-2));
  color: var(--text);
}

.login-wrap {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  border-radius: 18px;
  padding: 36px 32px 28px;
  box-shadow: 0 24px 60px rgba(2, 6, 23, 0.45);
  animation: surge 0.4s ease;
}

@keyframes surge {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.brand {
  text-align: center;
  margin-bottom: 26px;
}

.brand-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #1e40af);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.brand-sub {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #334155;
}

.field input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.senha-box {
  position: relative;
}

.senha-box input {
  padding-right: 78px;
}

.toggle-senha {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 8px;
}

.erro {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 14px;
}

.btn-entrar {
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background 0.15s, transform 0.05s;
}

.btn-entrar:hover { background: var(--primary-hover); }
.btn-entrar:active { transform: scale(0.99); }
.btn-entrar:disabled { opacity: 0.7; cursor: not-allowed; }

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.rodape {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin: 22px 0 0;
}