:root {
    --primary-color: #4e73df;
    --primary-dark: #3a5ccc;
    --primary-light: #6f8be4;
    --secondary-color: #f6c23e;
    --secondary-dark: #dda20a;
    --secondary-light: #ffd66e;
    --success-color: #1cc88a;
    --error-color: #e74a3b;
    --background-color: #f8f9fc;
    --text-color: #5a5c69;
    --card-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
    --card-hover-shadow: 0 0.5rem 2.5rem 0 rgba(58, 59, 69, 0.25);
    --transition-speed: 0.3s;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
  }
  
  body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
  }
  
  body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("https://images.unsplash.com/photo-1517248135467-4c7edcad34c4?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxzZWFyY2h8Mnx8cmVzdGF1cmFudHxlbnwwfHwwfHx8MA%3D%3D&w=1000&q=80");
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: -1;
  }
  
  .login-container {
    width: 100%;
    max-width: 450px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    transform-style: preserve-3d;
    position: relative;
  }
  
  .login-container:hover {
    transform: translateY(-10px) rotateY(2deg);
    box-shadow: var(--card-hover-shadow);
  }
  
  .login-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  
  .login-header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 70%);
    transform: rotate(30deg);
    pointer-events: none;
  }
  
  .login-header h2 {
    font-size: 28px;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
  }
  
  .login-header p {
    font-size: 16px;
    opacity: 0.9;
  }
  
  .login-form {
    padding: 30px;
  }
  
  .form-group {
    margin-bottom: 25px;
    position: relative;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
    transition: all var(--transition-speed);
  }
  
  .form-group .input-with-icon {
    position: relative;
    transition: all var(--transition-speed);
  }
  
  .form-group .input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
    transition: all var(--transition-speed);
  }
  
  .form-group input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all var(--transition-speed);
    background-color: #f9fafc;
  }
  
  .form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(78, 115, 223, 0.25);
    background-color: white;
  }
  
  .form-group input:focus + i {
    color: var(--primary-color);
  }
  
  .form-group .error-text {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
    display: none;
    animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
  }
  
  @keyframes shake {
    10%,
    90% {
      transform: translate3d(-1px, 0, 0);
    }
    20%,
    80% {
      transform: translate3d(2px, 0, 0);
    }
    30%,
    50%,
    70% {
      transform: translate3d(-4px, 0, 0);
    }
    40%,
    60% {
      transform: translate3d(4px, 0, 0);
    }
  }
  
  .form-group.error input {
    border-color: var(--error-color);
    background-color: rgba(231, 74, 59, 0.05);
  }
  
  .form-group.error .error-text {
    display: block;
  }
  
  .login-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(78, 115, 223, 0.3);
  }
  
  .login-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s;
  }
  
  .login-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(78, 115, 223, 0.4);
  }
  
  .login-btn:hover::before {
    left: 100%;
  }
  
  .login-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(78, 115, 223, 0.3);
  }
  
  .login-footer {
    text-align: center;
    padding: 0 30px 30px;
  }
  
  .login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
    position: relative;
  }
  
  .login-footer a::after {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-color);
    transition: width var(--transition-speed);
  }
  
  .login-footer a:hover {
    color: var(--primary-dark);
  }
  
  .login-footer a:hover::after {
    width: 100%;
  }
  
  .error-message {
    background-color: rgba(231, 74, 59, 0.1);
    color: var(--error-color);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
    transform: translate3d(0, 0, 0);
    border-left: 4px solid var(--error-color);
  }
  
  .error-message i {
    font-size: 20px;
  }
  
  /* Floating shapes for background */
  .shape {
    position: absolute;
    z-index: -1;
    opacity: 0.1;
    animation: float 15s infinite ease-in-out;
  }
  
  .shape-1 {
    top: 10%;
    left: 10%;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--primary-color);
    animation-delay: 0s;
  }
  
  .shape-2 {
    top: 20%;
    right: 10%;
    width: 150px;
    height: 150px;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: var(--secondary-color);
    animation-delay: 2s;
  }
  
  .shape-3 {
    bottom: 10%;
    left: 20%;
    width: 80px;
    height: 80px;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: var(--success-color);
    animation-delay: 4s;
  }
  
  .shape-4 {
    bottom: 20%;
    right: 20%;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--primary-light);
    animation-delay: 6s;
  }
  
  @keyframes float {
    0% {
      transform: translateY(0) rotate(0deg);
    }
    50% {
      transform: translateY(-20px) rotate(10deg);
    }
    100% {
      transform: translateY(0) rotate(0deg);
    }
  }
  
  /* Role-specific styles */
  .admin-theme {
    --primary-color: #4e73df;
    --primary-dark: #3a5ccc;
    --primary-light: #6f8be4;
  }
  
  .chef-theme {
    --primary-color: #e74a3b;
    --primary-dark: #c0392b;
    --primary-light: #e57373;
  }
  
  .waiter-theme {
    --primary-color: #1cc88a;
    --primary-dark: #16a085;
    --primary-light: #4cd3a5;
  }
  
  .courier-theme {
    --primary-color: #f6c23e;
    --primary-dark: #f39c12;
    --primary-light: #ffd66e;
  }
  
  /* Animations */
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  @keyframes fadeInLeft {
    from {
      opacity: 0;
      transform: translateX(-20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  @keyframes fadeInRight {
    from {
      opacity: 0;
      transform: translateX(20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  @keyframes pulse {
    0% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.05);
    }
    100% {
      transform: scale(1);
    }
  }
  
  .animate-fadeInUp {
    animation: fadeInUp 0.8s ease-out;
  }
  
  .animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease-out;
  }
  
  .animate-fadeInRight {
    animation: fadeInRight 0.8s ease-out;
  }
  
  .animate-pulse {
    animation: pulse 2s infinite;
  }
  
  /* Responsive Styles */
  @media (max-width: 576px) {
    body {
      padding: 10px;
    }
  
    .login-container {
      max-width: 100%;
      border-radius: 10px;
    }
  
    .login-header {
      padding: 20px;
    }
  
    .login-header h2 {
      font-size: 24px;
    }
  
    .login-form {
      padding: 20px;
    }
  
    .form-group input {
      padding: 12px 12px 12px 40px;
    }
  }
  
  /* Password visibility toggle */
  .password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
    cursor: pointer;
    transition: all var(--transition-speed);
  }
  
  .password-toggle:hover {
    color: var(--primary-color);
  }
  
  /* Loading spinner */
  .spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
  }
  
  @keyframes spin {
    to {
      transform: rotate(360deg);
    }
  }
  
  /* Role icon */
  .role-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    color: white;
    background: rgba(255, 255, 255, 0.2);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    animation: pulse 2s infinite;
  }