.tool-page {
    display: grid;
    gap: 1.5rem;
}

.tool-heading {
    max-width: 760px;
}

.tool-kicker {
    color: var(--link-color);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.tool-heading h2 {
    margin: 0.2rem 0 0.5rem;
    font-size: 2rem;
}

.tool-layout {
    display: grid;
    grid-template-columns: minmax(220px, 320px) minmax(0, 1fr);
    gap: 1rem;
    align-items: start;
}

.tool-panel {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 1.25rem;
}

.tool-panel h3 {
    margin-bottom: 1rem;
}

.random-word-panel {
    display: grid;
    gap: 1rem;
}

.random-word-result {
    display: grid;
    min-height: 4rem;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.letter-mask {
    display: grid;
    grid-template-columns: repeat(5, minmax(44px, 64px));
    gap: 0.65rem;
    margin-bottom: 1rem;
}

.letter-mask label {
    display: grid;
    gap: 0.35rem;
    justify-items: center;
}

.letter-mask span,
.field span {
    color: color-mix(in srgb, var(--text-color), transparent 22%);
    font-size: 0.9rem;
}

.letter-input {
    width: 100%;
    aspect-ratio: 1;
    text-align: center;
    text-transform: uppercase;
    font-size: 1.35rem;
    font-weight: 700;
}

.field {
    display: grid;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

.field input,
.letter-input {
    background: var(--bg-color);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 6px;
    color: var(--text-color);
    padding: 0.7rem 0.8rem;
}

.field input:focus,
.letter-input:focus {
    border-color: var(--link-color);
    outline: 2px solid color-mix(in srgb, var(--link-color), transparent 70%);
}

.tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.tool-button {
    background: var(--link-color);
    border: 1px solid var(--link-color);
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    padding: 0.7rem 1rem;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.tool-button:hover {
    background: var(--link-hover);
    border-color: var(--link-hover);
    transform: translateY(-1px);
}

.tool-button-secondary {
    background: transparent;
    color: var(--text-color);
}

.filter-summary {
    margin-bottom: 0.75rem;
}

.filtered-word-result {
    display: block;
    max-height: 22rem;
    overflow: auto;
}

.word-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
}

.word-list li {
    background: var(--bg-color);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 6px;
    padding: 0.35rem 0.55rem;
}

@media (max-width: 768px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }

    .letter-mask {
        grid-template-columns: repeat(5, minmax(40px, 1fr));
    }
}