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

body {
    font-family: 'Poppins', sans-serif;
    text-align: center;
    color: #ffffff;
    margin: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(-0deg, #5d4040, #8b0000, #000000, #000000);
    background-size: 300% 300%;
    animation: gradientShift 8s ease infinite;
    position: relative;
}

/* Background Animation */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Floating Particles */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    top: 0;
    left: 0;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    opacity: 0.6;
    animation: floatParticles 8s infinite linear;
}

@keyframes floatParticles {
    0% { transform: translateY(100vh) translateX(0); opacity: 0.3; }
    50% { opacity: 0.8; }
    100% { transform: translateY(-10vh) translateX(50px); opacity: 0; }
}

/* Generate multiple particles */
.particle:nth-child(1) { left: 10%; animation-duration: 6s; }
.particle:nth-child(2) { left: 25%; animation-duration: 7s; }
.particle:nth-child(3) { left: 40%; animation-duration: 5s; }
.particle:nth-child(4) { left: 55%; animation-duration: 6.5s; }
.particle:nth-child(5) { left: 70%; animation-duration: 7.5s; }
.particle:nth-child(6) { left: 85%; animation-duration: 5.5s; }

/* Navbar */
nav {
    position: absolute;
    top: 10px;
    width: 95%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: rgba(248, 101, 101, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    z-index: 2;
}

nav h1 {
    font-size: 2.5rem;
    font-family: 'Poppins', sans-serif;
    text-shadow: 2px 2px 15px rgba(130, 130, 130, 0.6);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline;
}

nav ul li a {
    text-decoration: none;
    font-size: 1.3rem;
    font-family: 'Poppins', sans-serif;
    color: rgb(255, 255, 255);
    padding: 12px 18px;
    border-radius: 8px;
    transition: background 0.3s ease, transform 0.2s;
}

nav ul li a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

/* Main Container - Scaled Up */
.container {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 14px;
    backdrop-filter: blur(10px);
    box-shadow: 0px 0px 20px rgba(255, 255, 255, 0.15);
    position: relative;
    z-index: 2;
    width: 80%;
    max-width: 900px;
}

h2 {
    font-size: 2rem;
}

p {
    font-size: 1.5rem;
}

/* Buttons - Styled & Scaled Up */
button {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 18px 50px;
    font-size: 1.7rem;
    color: white;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}

button:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.4);
}

/* Intro Page Start Typing Button */
.intro-button {
    display: inline-block;
    padding: 18px 50px;
    font-size: 1.7rem;
    color: white;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s, background 0.3s;
    border: none;
}

.intro-button:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.4);
}

/* Textarea - Scaled Up */
textarea {
    width: 90%;
    height: 200px;
    font-size: 1.8rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 15px;
    resize: none;
    outline: none;
}

/* Character coloring */
.correct {
    color: lightgreen;
}

.incorrect {
    color: red;
}