body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0d0d0d;
    color: white;
}

.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px 0;
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

.header img {
    height: 90px;
    width: auto;
}

.page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 150px 20px 60px;
}

h1 {
    text-align: center;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: #aaa;
    margin-bottom: 35px;
}

.tool-box,
.viewer-box {
    background: #111;
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 30px;
}

.tool-box h2 {
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
}

.words-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(160px, 1fr));
    gap: 12px;
}

.words-grid input {
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 12px;
    padding: 12px;
    color: white;
    font-size: 14px;
    outline: none;
}

.words-grid input:focus {
    border-color: #666;
}

.buttons {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

button {
    background: #fff;
    color: #000;
    border: none;
    border-radius: 12px;
    padding: 12px 18px;
    font-weight: bold;
    cursor: pointer;
}

button.secondary {
    background: #2a2a2a;
    color: white;
}

.message {
    margin-top: 18px;
    color: #ff8a8a;
    min-height: 20px;
    text-align: center;
}

.svg-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    overflow: auto;
}

.svg-container svg {
    max-width: 100%;
    max-height: 900px;
    height: auto;
}

@media (max-width: 900px) {
    .words-grid {
        grid-template-columns: repeat(2, minmax(140px, 1fr));
    }
}

@media (max-width: 560px) {
    .words-grid {
        grid-template-columns: 1fr;
    }
}