* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
            text-decoration: none;
            list-style: none;
            scroll-behavior: smooth;
        }
        :root {
            --text-color: #fff;
            --bg-color: #1b1f24;
            --second-bg-color: #22282f;
            --main-color: #006bd6;
            --other-color: #c3cad5;
            --h1-font: 4.5rem;
            --h2-font: 2.9rem;
            --p-font: 1rem;
        }
        body {
            color: var(--text-color);
            background: var(--bg-color);
        }
        header {
            position: fixed;
            width: 100%;
            top: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 40px 16%;
            background: transparent;
            transition: all .50s ease;
        }
        .logo {
            font-size: 36px;
            color: var(--text-color);
            font-weight: 600;
        }
        span {
            color: var(--main-color);
        }
        .navlist {
            display: flex;
        }
        .navlist a {
            font-size: var(--p-font);
            font-weight: 500;
            color: var(--other-color);
            margin-left: 40px;
            transition: all .50s ease;
        }
        .navlist a:hover {
            color: var(--main-color);
            text-shadow: 3px 3px 20px var(--main-color), -2px 1px 30px var(--text-color);
        }
        #menu-icon {
            font-size: 35px;
            z-index: 10001;
            cursor: pointer;
            display: none;
        }
        .h-btn {
            display: inline-block;
            padding: 11px 26px;
            background: transparent;
            color: var(--main-color);
            border: 2px solid var(--main-color);
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            transition: all .50s ease;
        }
        .h-btn:hover {
            background: var(--main-color);
            color: var(--bg-color);
            box-shadow: 0 0 20px var(--main-color);
            transform: scale(1.1);
        }
        section {
            padding: 110px 16% 90px;
        }
        .hero {
            height: 100vh;
            width: 100%;
            background: var(--bg-color);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .tts-container {
            background: var(--second-bg-color);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 0 15px rgba(0, 107, 214, 0.3);
            width: 100%;
            max-width: 700px;
            margin-top: 60px;
        }
        .tts-container h1 {
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 30px;
            color: var(--text-color);
        }
        .tts-container h1 span {
            color: var(--main-color);
        }
        .input-group {
            margin-bottom: 20px;
        }
        .input-group textarea {
            width: 100%;
            padding: 15px;
            border-radius: 10px;
            border: 2px solid var(--main-color);
            background: #2d343f;
            color: var(--text-color);
            font-size: 16px;
            resize: vertical;
            min-height: 150px;
            transition: all 0.3s ease;
        }
        .input-group textarea:focus {
            outline: none;
            box-shadow: 0 0 10px var(--main-color);
        }
        .input-group textarea::placeholder {
            color: var(--other-color);
        }
        .voice-select {
            width: 100%;
            padding: 15px;
            border-radius: 10px;
            border: 2px solid var(--main-color);
            background: #2d343f;
            color: var(--text-color);
            font-size: 16px;
            margin-bottom: 20px;
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23006bd6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 15px center;
            background-size: 16px;
        }
        .voice-select:focus {
            outline: none;
            box-shadow: 0 0 10px var(--main-color);
        }
        .convert-btn {
            display: block;
            width: 100%;
            padding: 15px;
            background: var(--main-color);
            color: var(--bg-color);
            border: none;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-bottom: 20px;
        }
        .convert-btn:hover {
            background: transparent;
            color: var(--main-color);
            box-shadow: 0 0 20px var(--main-color);
        }
        .audio-player {
            width: 100%;
            margin-top: 20px;
            border-radius: 10px;
            overflow: hidden;
        }
        audio {
            width: 100%;
        }
        .footer {
            padding: 22px 16%;
            background: var(--second-bg-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
        }
        .copyright p {
            font-size: 15px;
            font-weight: 400;
            color: var(--other-color);
        }
        .scroll-top i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #075fe4;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            color: var(--text-color);
            font-size: 27px;
        }
        header.sticky {
            background: var(--bg-color);
            box-shadow: 0 .1rem 1rem rgba(0,0,0,.2);
            padding: 16px 16%;
        }
        @media(max-width:1700px) {
            header {
                padding: 20px 8%;
            }
            header.sticky {
                padding: 14px 8%;
            }
            section {
                padding: 90px 8% 80px;
            }
            .footer {
                padding: 18px 8%;
            }
            .logo {
                font-size: 25px;
            }
        }
        @media(max-width:1380px) {
            header {
                padding: 20px 5%;
            }
            header.sticky {
                padding: 14px 5%;
            }
            section {
                padding: 90px 5% 80px;
            }
            .footer {
                padding: 18px 5%;
            }
            .hero {
                height: auto;
                padding: 120px 0 60px;
            }
        }
        @media (max-width:950px) {
            :root {
                --h1-font: 3.5rem;
            }
            #menu-icon {
                display: block;
            }
            .navlist {
                position: absolute;
                top: 100%;
                right: -100%;
                width: 255px;
                min-height: 100vh;
                display: flex;
                flex-direction: column;
                background: var(--bg-color);
                transition: all .50s ease;
            }
            .navlist a {
                display: block;
                padding: 17px;
                font-size: 22px;
            }
            .navlist.active {
                right: 0;
            }
        }
        @media (max-width:680px) {
            .tts-container {
                padding: 20px;
            }
            .tts-container h1 {
                font-size: 2rem;
            }
        }
        .snowflakes {
            position: fixed;
            top: 0;
            left: 0;
            pointer-events: none;
            z-index: 9999;
        }
        .snowflake {
            position: absolute;
            top: -10px;
            color: #fff;
            font-size: 24px;
            user-select: none;
            animation: fall linear infinite;
            opacity: 0.8;
        }
        @keyframes fall {
            0% {
                transform: translateY(-10px);
            }
            100% {
                transform: translateY(100vh);
            }
        }