:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --primary: #58a6ff;
    --text-main: #c9d1d9;
    --accent: #238636;
    --error: #f85149;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

header h1 {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 5px;
}

header h1 span {
    color: var(--primary);
}

main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #8b949e;
}

select, textarea {
    width: 100%;
    background: var(--bg-color);
    border: 1px solid #30363d;
    color: white;
    padding: 12px;
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 20px;
    box-sizing: border-box;
}

select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

textarea {
    height: 120px;
    resize: vertical;
}

button {
    background-color: var(--accent);
    color: white;
    border: 1px solid rgba(240, 246, 252, 0.1);
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    width: 100%;
    transition: 0.2s;
    font-size: 1rem;
}

button:hover {
    background-color: #2ea043;
}

.output-section {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 6px;
    border: 1px solid #30363d;
    position: relative;
}

pre {
    margin: 0 0 20px 0 !important;
    border-radius: 6px;
    border: 1px solid #30363d !important;
}

.loader {
    color: var(--primary);
    text-align: center;
    padding: 40px 20px;
    font-weight: bold;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

.error-text {
    color: var(--error);
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--error);
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

#copy-btn {
    background: #21262d;
}

#copy-btn:hover {
    background: #30363d;
}