:root {
    --bg: #f9f9f9;
    --text: #333;
    --accent: #4f46e5;
    --accent-light: #a5b4fc;
    --border: #ddd;
}

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

body {
    font-family: system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-width: 320px;
}

main {
    max-width: 700px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    color: var(--accent);
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
}

select,
input[type="password"],
input[type="file"],
button {
    width: 100%;
    padding: 0.6rem;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background-color: var(--bg);
}

button {
    background-color: var(--accent);
    color: white;
    border: none;
    cursor: pointer;
}

button[disabled] {
    background-color: var(--accent-light);
    cursor: not-allowed;
}

button:active {
    opacity: 0.8;
}

#notification {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 1rem;
}

#notification.error {
    background-color: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

#notification.success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

#loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--accent-light);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.hidden {
    display: none !important;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

pre {
    white-space: pre-wrap;
    background: #f3f4f6;
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
}

.result-actions {
    margin: 1rem 0;
    display: flex;
    gap: 0.5rem;
}