body {
  margin: 0;
  font-family: 'SF Pro Display', 'Inter', system-ui, sans-serif;
  background: linear-gradient(135deg, #f8fbff 0%, #eff7f1 50%, #e2f2ea 100%);
  color: #0f1a1a;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-shell {
  width: min(1100px, 92vw);
  background: rgba(255,255,255,0.92);
  border-radius: 34px;
  box-shadow: 0 30px 80px rgba(18, 25, 32, 0.15);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  overflow: hidden;
}

.login-left {
  padding: 60px 48px;
  background: #26986B;
  color: #fff;
}
.login-left img {
  filter: drop-shadow(0 12px 30px rgba(0,0,0,0.35));
}
.login-left h1,
.login-left p {
  color: #fff;
}
.login-left img {
  width: 160px;
  margin-bottom: 48px;
}
.login-left h1 {
  font-size: 48px;
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.login-left p {
  margin-top: 12px;
  font-size: 18px;
  color: #4a5b59;
  letter-spacing: 0.2em;
}

.login-right {
  padding: 60px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.login-right h2 {
  margin: 0;
  letter-spacing: 0.4em;
  font-size: 16px;
  color: #60736f;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-field label {
  font-size: 13px;
  font-weight: 600;
  color: #60736f;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.form-field input {
  border: none;
  border-radius: 18px;
  padding: 16px 18px;
  background: rgba(15,26,26,0.04);
  font-size: 15px;
  outline: none;
}
.form-field input:focus {
  box-shadow: 0 0 0 2px rgba(38,152,107,0.5);
}

.btn-submit {
  border: none;
  border-radius: 18px;
  padding: 16px;
  background: linear-gradient(135deg, #1c6f4f, #26a86f);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.32em;
  cursor: pointer;
  transition: transform .2s ease;
  margin-top: 18px;
}
.btn-submit:hover {
  transform: translateY(-1px);
}

.error-box {
  background: rgba(228,71,71,0.12);
  color: #c0392b;
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 13px;
  display: none;
}

@media (max-width: 900px) {
  .login-shell {
    grid-template-columns: 1fr;
  }
  .login-left {
    display: none;
  }
}