:root {
  --sap-blue: #1676d2;
  --sap-blue-dark: #f5f8fa;
  --sap-backgrounddark: #095caf;
  --sap-background: #ace0fa;
  --sap-logout: #08abfc;
  --sap-logoutdark: #024669;
  --glass: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.3);
  --text-dark: #1e2d3a;
}

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

html, body {
  height: 100%;
  overflow-x: hidden;
}

body.login-page {
  background: linear-gradient(120deg, var(--sap-backgrounddark), var(--sap-background));
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  padding: 20px;
  overflow: hidden;
  position: relative;
}

.login-wrapper {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 0;
  position: relative;
  margin: 0 auto;
}

.login-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  padding: 40px 35px;
  text-align: center;
  animation: fadeInUp 0.6s ease-out;
  width: 100%;
  max-width: 100%;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  box-sizing: border-box;
  margin: 0 auto;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.logo {
  margin-bottom: 15px;
}

.logo img {
  width: 60px;
  height: 60px;
  margin-bottom: 10px;
  object-fit: contain;
}

.login-card h1 {
  font-size: 20px;
  margin: 0 0 5px 0;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.3;
}

.login-card h2 {
  font-size: 16px;
  font-weight: 400;
  margin-bottom: 30px;
  color: rgba(30, 45, 58, 0.7);
  line-height: 1.4;
}

.form-group {
  text-align: left;
  margin-bottom: 18px;
  font-weight: 600;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-dark);
}

.form-group input {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #d0d5dc;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.95);
  font-size: 14px;
  color: #333;
  transition: 0.3s ease;
  box-sizing: border-box;
}

.form-group input:focus {
  border-color: var(--sap-blue);
  outline: none;
  background-color: #fff;
  box-shadow: 0 0 8px rgba(22, 118, 210, 0.2);
}

.btn-login {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(55deg, var(--sap-logout), var(--sap-logoutdark));
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s ease;
  margin-top: 10px;
}

.btn-login:hover {
  transform: translateY(-1px);
  background: linear-gradient(to right, var(--sap-logoutdark), var(--sap-logout));
  box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

.btn-login:active {
  transform: translateY(0);
}

.error-message {
  background: rgba(255, 0, 0, 0.08);
  color: #d93025;
  padding: 10px 12px;
  margin-bottom: 15px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid rgba(217, 48, 37, 0.2);
}

/* ================
   RESPONSIVE DESIGN
   ================ */

/* Large tablets and small desktops */
@media (max-width: 768px) {
  body.login-page {
    padding: 15px;
  }
  
  .login-wrapper {
    max-width: 380px;
  }
  
  .login-card {
    padding: 35px 30px;
    border-radius: 16px;
  }
  
  .logo img {
    width: 55px;
    height: 55px;
  }
  
  .login-card h1 {
    font-size: 19px;
  }
  
  .login-card h2 {
    font-size: 15px;
    margin-bottom: 25px;
  }
  
  .form-group {
    margin-bottom: 16px;
  }
}

/* Small tablets and large phones */
@media (max-width: 576px) {
  body.login-page {
    padding: 15px;
    align-items: center;
    justify-content: center;
  }
  
  .login-wrapper {
    max-width: 100%;
    width: 100%;
    margin: 0;
  }
  
  .login-card {
    padding: 30px 25px;
    border-radius: 14px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    max-height: calc(100vh - 30px);
    margin: 0;
    width: 100%;
    max-width: 100%;
  }
  
  .logo {
    margin-bottom: 12px;
  }
  
  .logo img {
    width: 50px;
    height: 50px;
  }
  
  .login-card h1 {
    font-size: 18px;
    margin-bottom: 3px;
  }
  
  .login-card h2 {
    font-size: 14px;
    margin-bottom: 20px;
  }
  
  .form-group {
    margin-bottom: 14px;
  }
  
  .form-group label {
    font-size: 13px;
    margin-bottom: 5px;
  }
  
  .form-group input {
    padding: 11px 12px;
    font-size: 14px;
    border-radius: 8px;
  }
  
  .btn-login {
    padding: 11px;
    font-size: 14px;
    border-radius: 8px;
    margin-top: 8px;
  }
  
  .error-message {
    padding: 9px 10px;
    margin-bottom: 12px;
    font-size: 13px;
    border-radius: 6px;
  }
}

/* Extra small phones */
@media (max-width: 400px) {
  body.login-page {
    padding: 10px;
  }
  
  .login-card {
    padding: 25px 20px;
    border-radius: 12px;
    max-height: calc(100vh - 20px);
  }
  
  .logo img {
    width: 45px;
    height: 45px;
  }
  
  .login-card h1 {
    font-size: 17px;
  }
  
  .login-card h2 {
    font-size: 13px;
    margin-bottom: 18px;
  }
  
  .form-group {
    margin-bottom: 12px;
  }
  
  .form-group input {
    padding: 10px;
    font-size: 13px;
  }
  
  .btn-login {
    padding: 10px;
    font-size: 13px;
  }
}

/* Ultra small screens */
@media (max-width: 320px) {
  body.login-page {
    padding: 8px;
  }
  
  .login-card {
    padding: 20px 15px;
    border-radius: 10px;
  }
  
  .logo img {
    width: 40px;
    height: 40px;
  }
  
  .login-card h1 {
    font-size: 16px;
  }
  
  .login-card h2 {
    font-size: 12px;
    margin-bottom: 15px;
  }
  
  .form-group input {
    padding: 9px;
    font-size: 12px;
  }
  
  .btn-login {
    padding: 9px;
    font-size: 12px;
  }
}

/* Landscape orientation for small devices */
@media (max-height: 600px) and (orientation: landscape) {
  body.login-page {
    padding: 10px;
    align-items: center;
  }
  
  .login-card {
    padding: 20px 25px;
    max-height: calc(100vh - 20px);
  }
  
  .logo {
    margin-bottom: 8px;
  }
  
  .logo img {
    width: 35px;
    height: 35px;
  }
  
  .login-card h1 {
    font-size: 16px;
    margin-bottom: 2px;
  }
  
  .login-card h2 {
    font-size: 12px;
    margin-bottom: 15px;
  }
  
  .form-group {
    margin-bottom: 10px;
  }
  
  .form-group input {
    padding: 8px 10px;
  }
  
  .btn-login {
    padding: 8px;
    margin-top: 5px;
  }
}

/* Focus states for better accessibility */
.form-group input:focus,
.btn-login:focus {
  outline: 2px solid var(--sap-blue);
  outline-offset: 2px;
}

/* Prevent zoom on iOS */
@media screen and (max-width: 768px) {
  .form-group input {
    font-size: 16px;
  }
}