body {
    font-family: Arial, sans-serif;
    max-width: 1000px;
    margin: 40px auto;
    padding: 20px;
    background: #fafafa;
    color: #222;
}

.container h1 {
    margin-bottom: 30px;
}

form {
    margin-bottom: 30px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

input[type="file"] {
    display: block;
    margin-bottom: 16px;
}

button {
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    border-radius: 6px;
    background: #2563eb;
    color: #fff;
    font-size: 15px;
}

button:hover {
    background: #1d4ed8;
}

button:disabled {
    background: #94a3b8;
    cursor: not-allowed;
}

.loading {
    text-align: center;
    padding: 40px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 16px;
    border: 4px solid #e5e7eb;
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.error {
    padding: 14px 16px;
    margin-bottom: 20px;
    background: #fef2f2;
    color: #b91c1c;
    border-radius: 6px;
    border: 1px solid #fecaca;
}

.result {
    margin-top: 20px;
}

.box {
    margin-bottom: 32px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.box h3 {
    margin-top: 0;
    margin-bottom: 12px;
}

textarea {
    width: 100%;
    height: 260px;
    padding: 10px;
    box-sizing: border-box;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    resize: vertical;
    font-family: Consolas, monospace;
    font-size: 14px;
}

.words {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.word {
    background: #f2f2f2;
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 15px;
}

.count {
    color: #666;
    margin-bottom: 15px;
}

.hidden {
    display: none;
}