:root {
    --primary-color: #2563eb;
    --bg-color: #fafafa;
    --card-bg: #ffffff;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --shadow: 0 10px 40px -10px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

header {
    background-color: var(--card-bg);
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

header h1 {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    color: var(--text-dark);
    text-transform: uppercase;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

section[name="halloo"] {
    background-color: var(--card-bg);
    width: 100%;
    max-width: 420px;
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid #f0f0f0;
}

section h1 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    color: var(--text-dark);
}

form p {
    text-align: left;
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: 0.7rem;
    margin-top: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

input[type="text"] {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    background-color: lightgray;
    border: 2px solid dimgray;
    border-radius: 12px;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    outline: none;
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.btn-play {
    display: block;
    width: 100%;
    margin-top: 2rem;
    padding: 16px;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background-color: var(--primary-color);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-play:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
}

.btn-play:active {
    transform: translateY(0);
}
footer {
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}