* {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    margin: 0;
    padding: 40px;
    background: #0e1117;
    color: #e6e6e6;
}

.container {
    max-width: 900px;
    margin: auto;
}

.card {
    margin-bottom: 40px;
    padding: 32px;
    background: rgba(255,255,255,0.04);
    border-radius: 18px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}

h1 {
    font-size: 26px;
    margin: 0 0 20px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

label {
    display: block;
    margin: 18px 0 6px;
    font-size: 14px;
    color: #9fb3c8;
}

select, textarea, input[type=file] {
    width: 100%;
    padding: 12px 14px;
    margin-top: 6px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.06);
    color: #fff;
    outline: none;
    resize: vertical;
    font-size: 15px;
}

textarea {
    min-height: 110px;
}

button {
    margin-top: 18px;
    padding: 12px 22px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(90deg, #007aff, #00c6ff);
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 122, 255, 0.5);
}

.output {
    margin-top: 20px;
    padding: 18px;
    white-space: pre-wrap;
    background: rgba(0,0,0,0.4);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.08);
    font-size: 15px;
    line-height: 1.6em;
}