/* Base styles (Desktop default) */
body {
  font-family: 'Source Serif Pro', serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f9;
  color: #333;
  position: relative;
  height: 100vh;
  overflow: hidden;
}

#login-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.login-container {
  position: absolute;
  top: 0;
  right: 0;
  width: 425px;
  height: 100vh;
  background: #ffffff;
  padding: 30px 64px;
  box-shadow: 0px 0 6px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
  z-index: 1;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

form {
  width: 100%;
}

.login-header {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  margin-bottom: 56px;
}

#PTSI-logo {
  width: 75px;
  height: auto;
  margin-bottom: 8px;
}

h1.login-text {
  font-size: 32px;
  color: #000000;
  margin: 0;
  margin-bottom: 16px;
}

/* Login Type Toggle */
.login-type-toggle {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
  background-color: #f0f0f0;
  border-radius: 8px;
  padding: 4px;
  width: 100%;
  max-width: 300px;
}

.login-type-btn {
  flex: 1;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: #666;
  font-family: 'Source Serif Pro', serif;
  font-size: 16px;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.login-type-btn.active {
  background-color: #000099;
  color: white;
  font-weight: 600;
}

.login-type-btn:not(.active):hover {
  background-color: #e0e0e0;
}

input[type="text"],
input[type="password"] {
  width: 85%;
  padding: 16px;
  margin: 10px auto 16px auto;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
  display: block;
}

input::placeholder {
  font-family: 'Source Serif Pro', serif;
  font-size: 16px;
  color: #888;
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: #007bff;
  outline: none;
  box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
}

button {
  width: 93%;
  padding: 16px;
  margin: 56px auto 8px auto;
  border-radius: 8px;
  font-size: 16px;
  display: block;
  background-color: #000099;
  color: #fff;
  cursor: pointer;
  transition: background-color 0.3s ease;
  border: none;
  font-family: 'Source Serif Pro', serif;
}

button:hover {
  background-color: #000000;
}

a {
  color: #0056b3;
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
}

a:hover {
  text-decoration: underline;
  color: #0056b3;
}

/* Input Groups */
.input-group {
    position: relative;
    margin-bottom: 1rem;
}

.password-container {
    position: relative;
    display: flex;
    align-items: center;
}

#togglePassword {
    position: absolute;
    left: 190px;
    font-size: 16px;
    margin-bottom: 60px;
    background: none;
    border: none;
    cursor: pointer;
    color: #888;
}

/* Password Strength Indicator */
.password-strength {
    height: 4px;
    margin-top: 5px;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.strength-1 { background-color: #ff4444; width: 25%; }
.strength-2 { background-color: #ffbb33; width: 50%; }
.strength-3 { background-color: #00C851; width: 75%; }
.strength-4 { background-color: #007E33; width: 100%; }

/* Validation Messages */
.validation-message {
    font-size: 0.8rem;
    margin-top: 5px;
    min-height: 1.2em;
}

.validation-message.valid {
    color: #00C851;
}

.validation-message.invalid {
    color: #ff4444;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 20px;
    border-radius: 5px;
    width: 80%;
    max-width: 500px;
    position: relative;
}

.close-modal {
    position: absolute;
    right: 10px;
    top: 10px;
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

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

/* Message Animations */
.error-message, .success-message {
    padding: 10px;
    border-radius: 4px;
    margin-top: 10px;
    animation: slideIn 0.3s ease-out;
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
    border: 1px solid #ffcdd2;
}

.success-message {
    background-color: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #c8e6c9;
}

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

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* Remember Me Checkbox */
.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.remember-me input[type="checkbox"] {
    margin-right: 0.5rem;
}

/* Links Section */
.links {
    margin-top: 1rem;
    text-align: center;
}

.links a {
    color: #4a90e2;
    text-decoration: none;
}

.links a:hover {
    text-decoration: underline;
}

/* Responsive Styles */

/* Mobile phones (up to 480px) */
@media (max-width: 480px) {
  body {
    display: flex;
    justify-content: center; /* horizontal center */
    align-items: center;     /* vertical center */
    height: 100vh;           /* full viewport height */
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
    overflow: visible;
  }
  
  .login-container {
    position: relative;
    width: 87%;
    max-width: 480px;
    height: auto;
    padding: 40px 24px;
    box-shadow: none;
    overflow: visible;
    text-align: left;
    display: block;
    border-radius: 12px;
    background: #fff;
    margin: 0 auto;       /* Center horizontally */
  }

  #login-bg {
    display: block;
    background-image: url('../img/BG.png');
    background-size: cover;
    background-position: center;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: -1;
  }

  input[type="text"],
  input[type="password"],
  button {
    width: 87%;            /* slightly bigger inputs and buttons */
    margin: 10px 0;        /* adjusted margin */
    padding: 14px 16px;    /* bigger padding */
    font-size: 16px;       /* bigger font */
    border-radius: 8px;    /* bigger radius */
  }

  h1.login-text {
    font-size: 24px;       /* bigger heading */
    margin-bottom: 20px;
  }

  #PTSI-logo {
    width: 60px;           /* bigger logo */
    margin-bottom: 16px;
  }

  .login-header {
    margin-bottom: 32px;   /* more space */
  }

  button {
    margin-top: 32px;
    margin-bottom: 12px;
    width: 100%;
  }

  a {
    font-size: 16px;
  }
}



/* Tablets (481px to 768px) */
@media (min-width: 481px) and (max-width: 768px) {
  .login-container {
    position: absolute;
    right: 0;
    width: 320px;
    height: 100vh;
    padding: 120px 40px;
    box-shadow: 0px 0 4px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
  }

  #PTSI-logo {
    width: 60px;
  }

  h1.login-text {
    font-size: 28px;
  }

  input[type="text"],
  input[type="password"] {
    width: 90%;
    padding: 14px;
    font-size: 14px;
  }

  button {
    width: 90%;
    padding: 14px;
    font-size: 14px;
    margin: 40px auto 8px auto;
  }
}

/* Desktops (769px and up) */
@media (min-width: 769px) {
  /* Already styled as default */
}

/* Responsive Design */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}