:root {
  --primary-green: #2c6e49;
  --secondary-green: #4c9a6f;
  --light-green-bg: rgba(44, 110, 73, 0.04);
  --white-bg: #ffffff;
  --light-gray-bg: #f8f9fa;
  --text-dark: #1a1a1a;
  --text-muted: #666666;
  --border-color: #e2e8f0;
  --border-focus: #2c6e49;
}

* { 
  box-sizing: border-box; 
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  color: var(--text-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 420px;
  background: var(--white-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06);
  animation: fadeIn 0.6s ease;
}

.brand-header {
  text-align: center;
  margin-bottom: 32px;
}

.brand-logo-img {
  height: 65px;
  width: auto;
  margin-bottom: 12px;
  object-fit: contain;
}

.brand-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 0;
  color: var(--primary-green);
}

.brand-subtitle {
  font-size: 10px;
  color: var(--secondary-green);
  font-weight: 700;
  letter-spacing: 3px;
  margin-top: 4px;
  text-transform: uppercase;
}

.alert {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 13px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.8px;
}

.input-wrapper {
  position: relative;
}

.input-wrapper i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: #a0aec0;
  font-size: 14px;
  transition: color 0.3s ease;
}

.form-control {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--light-gray-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-dark);
  font-size: 14px;
  outline: none;
  transition: all 0.3s ease;
}

.form-control:focus {
  background: var(--white-bg);
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px rgba(44, 110, 73, 0.12);
}

.form-control:focus + i {
  color: var(--primary-green);
}

.btn-submit {
  width: 100%;
  padding: 14px;
  background: var(--primary-green);
  color: #ffffff;
  border: none;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 10px;
  transition: all 0.3s ease;
  box-shadow: 0 8px 20px rgba(44, 110, 73, 0.2);
}

.btn-submit:hover {
  background: var(--secondary-green);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(44, 110, 73, 0.3);
}

.footer-credit {
  margin-top: 30px;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

.footer-credit strong {
  color: var(--primary-green);
  font-weight: 600;
}

.back-to-home {
  display: inline-block;
  margin-top: 18px;
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
}

.back-to-home:hover {
  color: var(--primary-green);
}

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