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

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: #e2e8f0;
  padding: 16px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: rgba(30, 41, 59, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 24px;
  padding: 40px 32px 36px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
}

.login-card .logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-card .logo .icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #fff;
}

.login-card .logo .brand-image {
  width: 110px;
  height: 110px;
  margin: 0 auto 12px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.6);
  object-fit: cover;
  box-shadow: 0 12px 26px rgba(2, 6, 23, 0.45);
  display: block;
}

.login-card .logo h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #f1f5f9;
}

.login-card .logo p {
  font-size: 13px;
  color: #94a3b8;
  margin-top: 4px;
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 12px;
  color: #f1f5f9;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.field input::placeholder { color: #64748b; }

.btn-login {
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  margin-top: 4px;
}

.btn-login:hover { opacity: 0.92; }
.btn-login:active { transform: scale(0.98); }
.btn-login:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-error {
  background: rgba(220, 38, 38, 0.15);
  border: 1px solid rgba(220, 38, 38, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #86efac;
}

.alert-info {
  background: rgba(59, 130, 246, 0.16);
  border: 1px solid rgba(96, 165, 250, 0.32);
  color: #bfdbfe;
}

.lock-info {
  text-align: center;
  font-size: 13px;
  color: #94a3b8;
  margin-top: 12px;
}

.lock-info strong { color: #f87171; }