:root {
    --primary: #6366f1;
    --bg-dark: #0f111a;
    --card: #1a1d29;
    --input: #252a3d;
    --text: #f8fafc;
}

body {
    background: var(--bg-dark);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.box {
    width: 100%;
    max-width: 800px;
    background: var(--card);
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.grid-input {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

/* Tablet/Desktop Grid */
@media (min-width: 768px) {
    .grid-input { grid-template-columns: 1fr 1fr; }
    .full-width { grid-column: span 2; }
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    background: var(--input);
    border: 1px solid #334155;
    border-radius: 8px;
    color: white;
    font-size: 15px;
}

button {
    background: var(--primary);
    color: white;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

button:hover { filter: brightness(1.2); }

#log {
    margin-top: 20px;
    background: #000;
    padding: 15px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 13px;
    max-height: 150px;
    overflow-y: auto;
    color: #94a3b8;
}

.dl-btn {
    display: none;
    background: #10b981;
    text-align: center;
    text-decoration: none;
    padding: 15px;
    margin-top: 10px;
    border-radius: 8px;
    color: white;
    font-weight: bold;
}