:root {
            --navbar-height: 56px;
            --primary-color: #2a9d8f;
            --sidebar-bg: #264653;
            --sidebar-text: #ffffff;
            --content-bg: #f0f4f8;
            --primary: #2a9d8f;
            --primary-dark: #1d7a70;
            --secondary: #264653;
            --accent: #2a9d8f;
            --success: #10b981;
            --danger: #ef4444;
            --dark: #264653;
            --light: #f0f4f8;
            --text: #264653;
            --text-muted: #5a7a7f;
            --border: #e2e8f0;
            --glass: rgba(255, 255, 255, 0.1);
            --glass-border: rgba(255, 255, 255, 0.2);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--sidebar-bg) 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }

        .auth-container {
            min-height: 100vh;
            position: relative;
        }

        /* Animated Background */
        .bg-animation {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 0;
        }

        .floating-shape {
            position: absolute;
            opacity: 0.1;
            animation: float 20s infinite linear;
        }

        .shape-1 {
            width: 300px;
            height: 300px;
            background: linear-gradient(45deg, var(--primary-color), var(--sidebar-bg));
            border-radius: 50%;
            top: -150px;
            left: -150px;
            animation-delay: 0s;
        }

        .shape-2 {
            width: 200px;
            height: 200px;
            background: linear-gradient(45deg, var(--primary-color), rgba(42, 157, 143, 0.8));
            border-radius: 30%;
            top: 20%;
            right: -100px;
            animation-delay: 5s;
        }

        .shape-3 {
            width: 250px;
            height: 250px;
            background: linear-gradient(45deg, var(--sidebar-bg), var(--primary-color));
            border-radius: 40%;
            bottom: -125px;
            left: 10%;
            animation-delay: 10s;
        }

        .shape-4 {
            width: 150px;
            height: 150px;
            background: linear-gradient(45deg, var(--primary-color), rgba(38, 70, 83, 0.8));
            border-radius: 50%;
            top: 60%;
            right: 20%;
            animation-delay: 15s;
        }

        @keyframes float {
            0% {
                transform: translateY(0px) rotate(0deg);
            }
            33% {
                transform: translateY(-30px) rotate(120deg);
            }
            66% {
                transform: translateY(20px) rotate(240deg);
            }
            100% {
                transform: translateY(0px) rotate(360deg);
            }
        }

        /* Left Side - Brand Section */
        .brand-section {
            background: linear-gradient(135deg, 
                rgba(42, 157, 143, 0.95) 0%, 
                rgba(38, 70, 83, 0.95) 100%);
            backdrop-filter: blur(20px);
            border-right: 1px solid var(--glass-border);
            position: relative;
            overflow: hidden;
        }

        .brand-content {
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 60px 40px;
            position: relative;
            z-index: 2;
        }

        .brand-logo {
            width: 120px;
            height: 120px;
            background: var(--glass);
            backdrop-filter: blur(20px);
            border-radius: 30px;
            border: 2px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 40px;
            animation: pulse 3s ease-in-out infinite;
        }

        .brand-logo i {
            font-size: 3rem;
            color: white;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.3);
            }
            50% {
                transform: scale(1.05);
                box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
            }
        }

        .brand-title {
            font-family: 'Poppins', sans-serif;
            font-size: 3.5rem;
            font-weight: 700;
            color: white;
            margin-bottom: 20px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            line-height: 1.1;
        }

        .brand-subtitle {
            font-size: 1.3rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 40px;
            font-weight: 300;
            line-height: 1.6;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            align-items: flex-start;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 15px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.1rem;
            font-weight: 400;
        }

        .feature-icon {
            width: 40px;
            height: 40px;
            background: var(--glass);
            backdrop-filter: blur(10px);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--glass-border);
        }

        /* Right Side - Form Section */
        .form-section {
            background: var(--content-bg);
            backdrop-filter: blur(20px);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            padding: 40px;
        }

        .form-container {
            width: 100%;
            max-width: 480px;
            animation: slideInRight 0.8s ease-out;
        }

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .auth-card {
            background: white;
            border-radius: 32px;
            padding: 50px 40px;
            box-shadow: 
                0 25px 50px rgba(0, 0, 0, 0.15),
                0 0 0 1px rgba(255, 255, 255, 0.3);
            position: relative;
            overflow: hidden;
        }

        .auth-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--sidebar-bg));
        }

        .form-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .form-title {
            font-family: 'Poppins', sans-serif;
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .form-subtitle {
            color: var(--text-muted);
            font-size: 1.1rem;
            font-weight: 400;
        }

        .form-group {
            margin-bottom: 28px;
            position: relative;
        }

        .form-label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
            color: var(--text);
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }

        .input-wrapper {
            position: relative;
        }

        .form-control {
            width: 100%;
            padding: 18px 20px 18px 55px;
            border: 2px solid var(--border);
            border-radius: 16px;
            font-size: 1rem;
            background: var(--light);
            transition: all 0.3s ease;
            font-weight: 400;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            background: white;
            box-shadow: 0 0 0 4px rgba(42, 157, 143, 0.1);
            transform: translateY(-2px);
        }

        .form-control::placeholder {
            color: var(--text-muted);
            font-weight: 400;
        }

        .input-icon {
            position: absolute;
            left: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: all 0.3s ease;
        }

        .form-control:focus + .input-icon {
            color: var(--primary-color);
            transform: translateY(-50%) scale(1.1);
        }

        .forgot-password {
            text-align: right;
            margin-bottom: 32px;
        }

        .forgot-password a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .forgot-password a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .btn-login {
            width: 100%;
            padding: 18px;
            background: linear-gradient(135deg, var(--primary-color), var(--sidebar-bg));
            border: none;
            border-radius: 16px;
            color: white;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(42, 157, 143, 0.3);
        }

        .btn-login::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: left 0.6s ease;
        }

        .btn-login:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 35px rgba(42, 157, 143, 0.4);
        }

        .btn-login:hover::before {
            left: 100%;
        }

        .btn-login:active {
            transform: translateY(-1px);
        }

        .auth-footer {
            text-align: center;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 1rem;
        }

        .auth-footer a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .auth-footer a:hover {
            color: var(--primary-dark);
        }

        .alert {
            border-radius: 16px;
            border: none;
            padding: 18px 24px;
            margin-bottom: 28px;
            font-size: 0.95rem;
            font-weight: 500;
            animation: slideDown 0.4s ease-out;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .alert-success {
            background: rgba(16, 185, 129, 0.1);
            color: #065f46;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .alert-danger {
            background: rgba(239, 68, 68, 0.1);
            color: #991b1b;
            border: 1px solid rgba(239, 68, 68, 0.2);
        }

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

        /* Mobile Responsive */
        @media (max-width: 768px) {
            .auth-container {
                flex-direction: column;
            }
            
            .brand-section {
                min-height: 40vh;
                border-right: none;
                border-bottom: 1px solid var(--glass-border);
            }
            
            .brand-content {
                height: auto;
                padding: 40px 20px;
            }
            
            .brand-title {
                font-size: 2.5rem;
            }
            
            .brand-subtitle {
                font-size: 1.1rem;
            }
            
            .feature-list {
                display: none;
            }
            
            .form-section {
                min-height: 60vh;
                padding: 20px;
            }
            
            .auth-card {
                padding: 30px 20px;
                border-radius: 24px;
            }
            
            .form-title {
                font-size: 1.8rem;
            }
        }

        /* Loading State */
        .btn-loading {
            position: relative;
            color: transparent !important;
        }

        .btn-loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            margin: -10px 0 0 -10px;
            border: 2px solid transparent;
            border-top-color: #ffffff;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }