/*--------------------------------------------------------------
# Root Variables (Centralized Settings)
--------------------------------------------------------------*/
:root {
    /* Colors */
    --color-background: #121212;
    --color-surface: #1e1e1e;
    --color-text: #e0e0e0;
    --color-accent: #00B0F0;
    --color-highlight: #66FF33;
  
    /* Spacing and Sizes */
    --btn-padding: 12px 24px;
    --btn-radius: 8px;
    --input-padding: 8px 12px;
    --input-border-radius: 8px;
  
    /* Text Sizes */
    --font-size-heading: 1.5rem;
    --font-size-paragraph: 1rem;
    --font-size-button: 1.1rem;
  
    /* Image Sizes */
    --img-logo-max-width: 180px;
  }
  
  /*--------------------------------------------------------------
  # Global Styles
  --------------------------------------------------------------*/
  body {
    font-family: "Inter", sans-serif;
    color: var(--color-text);
    background-color: var(--color-background);
    margin: 0;
    padding: 0;
  }
  
  /*--------------------------------------------------------------
  # Login Page Styling
  --------------------------------------------------------------*/
  .login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: var(--color-background);
  }
  
  .login-card {
    background: var(--color-surface);
    padding: 30px;
    border-radius: var(--btn-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
  }
  
  .login-card h1 {
    font-size: var(--font-size-heading);
    color: var(--color-accent);
    margin-bottom: 15px;
  }
  
  .login-card p {
    font-size: var(--font-size-paragraph);
    color: var(--color-accent);
    margin-bottom: 20px;
  }
  
  .message {
    margin-bottom: 15px;
  }
  
  .message p {
    color: var(--color-highlight);
    margin: 0;
  }
  
  /* Form Elements */
  .form-group {
    margin-bottom: 16px;
    text-align: left;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--color-highlight);
    font-weight: bold;
  }
  
  .form-group input {
    width: 100%;
    padding: var(--input-padding);
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-accent);
    border-radius: var(--input-border-radius);
    font-size: var(--font-size-paragraph);
    box-sizing: border-box;
  }
  
  .form-group input:focus {
    border-color: var(--color-highlight);
    box-shadow: 0 0 5px var(--color-highlight);
  }
  
  /* Form Options (Remember me and Forgot password) */
  .form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
  }
  
  .form-options input[type="checkbox"] {
    margin-right: 6px;
  }
  
  .form-options label {
    margin: 0;
    color: var(--color-highlight);
  }
  
  .forgot-password {
    color: var(--color-accent);
    text-decoration: none;
  }
  
  .forgot-password:hover {
    color: var(--color-highlight);
    text-decoration: underline;
  }
  
  /* Buttons */
  .button-primary {
    background-color: var(--color-highlight);
    color: var(--color-surface);
    padding: var(--btn-padding);
    border-radius: var(--btn-radius);
    font-size: var(--font-size-button);
    font-weight: bold;
    text-transform: uppercase;
    display: inline-block;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
  }
  
  .button-primary:hover {
    background-color: var(--color-accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  }
  
  /* Logo */
  .logo-img {
    max-width: var(--img-logo-max-width);
    height: auto;
    object-fit: contain;
    filter: brightness(1.2);
    display: block;
    margin: 0 auto 10px auto;
  }

  /* Validation Feedback */
.form-group input.is-invalid {
    border-color: #ff3333; /* Red for invalid input */
    box-shadow: 0 0 5px rgba(255, 51, 51, 0.5);
}

.form-group input.is-invalid:focus {
    border-color: #ff6666; /* Darker red on focus */
    box-shadow: 0 0 5px rgba(255, 102, 102, 0.7);
}

/* QR Code Styling */
.qr-code-img {
    width: 200px; /* Adjust size for readability */
    height: auto;
    margin: 15px 0;
}

/* Form and Text Spacing */
.login-card p {
    margin-bottom: 20px;
}

.login-card .text-center {
    margin-bottom: 20px;
}

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