@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&display=swap');

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }

        #bgVideo {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            object-fit: cover;
            z-index: -2;
            /* under the gradient overlay */
        }

        body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            position: relative;
            overflow-x: hidden;
        }

        /* Animated background */
        body::before {
            z-index: -1;
        }

        @keyframes gradientShift {
            0% {
                background-position: 0% 50%;
            }

            50% {
                background-position: 100% 50%;
            }

            100% {
                background-position: 0% 50%;
            }
        }

        .auth-container {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 450px;
            margin: 20px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .auth-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
        }

        .auth-box {
            padding: 40px 30px;
            text-align: center;
        }

        .auth-header {
            margin-bottom: 30px;
        }

        .auth-header h1 {
            color: #ffffff;
            font-size: 2.5rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .auth-header p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
            font-weight: 300;
        }

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

        .input-field {
            width: 100%;
            height: 55px;
            padding: 0 20px;
            font-size: 16px;
            background: rgba(255, 255, 255, 0.9);
            border: 2px solid transparent;
            border-radius: 50px;
            outline: none;
            transition: all 0.3s ease;
        }

        .input-field:focus {
            transform: scale(1.02);
            border-color: rgba(255, 255, 255, 0.5);
            background: rgba(255, 255, 255, 1);
        }

        .input-field::placeholder {
            color: #666;
            font-weight: 400;
        }

        .password-toggle {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            font-size: 1.2rem;
            color: #666;
            transition: color 0.3s ease;
        }

        .password-toggle:hover {
            color: #333;
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            font-size: 0.9rem;
        }

        .remember-me {
            display: flex;
            align-items: center;
            color: rgba(255, 255, 255, 0.9);
        }

        .remember-me input {
            margin-right: 8px;
            accent-color: #667eea;
        }

        .forgot-link {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .forgot-link:hover {
            color: #ffffff;
            text-decoration: underline;
        }

        .submit-btn {
            width: 100%;
            height: 55px;
            background: linear-gradient(45deg, #87CEEB, #1E90FF, #0000CD);
            border: none;
            border-radius: 50px;
            color: white;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        .submit-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: left 0.5s ease;
        }

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

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }

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

        .auth-link {
            margin-top: 25px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
        }

        .auth-link a {
            color: #ffffff;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .auth-link a:hover {
            text-decoration: underline;
            text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
        }

        .error-message {
            background: rgba(255, 0, 0, 0.1);
            border: 1px solid rgba(255, 0, 0, 0.3);
            color: #ff6b6b;
            padding: 12px;
            border-radius: 10px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            display: none;
        }

        .success-message {
            background: rgba(0, 255, 0, 0.1);
            border: 1px solid rgba(0, 255, 0, 0.3);
            color: #51cf66;
            padding: 12px;
            border-radius: 10px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            display: none;
        }

        .page {
            display: none;
        }

        .page.active {
            display: block;
        }

        .back-btn {
            background: rgba(255, 255, 255, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: white;
            padding: 12px 24px;
            border-radius: 25px;
            cursor: pointer;
            font-size: 14px;
            margin-top: 15px;
            transition: all 0.3s ease;
        }

        .back-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }

        /* Loading animation */
        .loading {
            display: none;
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: #fff;
            animation: spin 1s ease-in-out infinite;
            margin: 0 auto;
        }

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

        /* Responsive Design */
        @media (max-width: 768px) {
            .auth-container {
                margin: 10px;
                max-width: 90%;
            }

            .auth-box {
                padding: 30px 20px;
            }

            .auth-header h1 {
                font-size: 2rem;
            }

            .input-field {
                height: 50px;
                font-size: 15px;
            }

            .submit-btn {
                height: 50px;
                font-size: 15px;
            }

            .form-options {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .auth-container {
                margin: 5px;
                border-radius: 15px;
            }

            .auth-box {
                padding: 25px 15px;
            }

            .auth-header h1 {
                font-size: 1.8rem;
            }

            .input-field {
                height: 45px;
                font-size: 14px;
                padding: 0 15px;
            }

            .submit-btn {
                height: 45px;
                font-size: 14px;
            }

            .password-toggle {
                right: 15px;
                font-size: 1rem;
            }
        }

        @media (max-width: 350px) {
            .auth-header h1 {
                font-size: 1.5rem;
            }

            .auth-box {
                padding: 20px 10px;
            }
        }

        /* Landscape orientation for mobile */
        @media (max-height: 600px) and (orientation: landscape) {
            .auth-container {
                max-width: 400px;
                margin: 10px;
            }

            .auth-box {
                padding: 20px;
            }

            .auth-header {
                margin-bottom: 20px;
            }

            .auth-header h1 {
                font-size: 1.8rem;
                margin-bottom: 5px;
            }

            .form-group {
                margin-bottom: 15px;
            }
        }