.btn-mode {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background-color: transparent;
    color: var(--cream-muted);
    border: 1px solid var(--border-strong);
    padding: 0.6rem 2rem;
}

.btn-mode:hover {
    color: var(--gold);
    background-color: rgba(201, 168, 76, 0.08);
    border-color: var(--border-strong);
}

.btn-mode.active {
    background-color: var(--gold);
    color: var(--bg-primary);
    border-color: var(--gold);
}

.cipher-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-top: 2px solid var(--gold-dim);
    border-radius: 4px;
    overflow: hidden;
    min-height: 300px;
    display: flex;
    flex-direction: column;
}

.cipher-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border);
}

.panel-label {
    font-family: var(--font-display);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-dim);
}

.btn-panel-action {
    font-family: var(--font-display);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: none;
    border: 1px solid var(--border);
    color: var(--cream-muted);
    padding: 0.2rem 0.6rem;
    border-radius: 2px;
    cursor: pointer;
}

.btn-panel-action:hover {
    border-color: var(--gold-dim);
    color: var(--gold);
}

.cipher-textarea {
    flex: 1;
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    color: var(--cream);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.8;
    padding: 1rem;
    min-height: 200px;
}

.cipher-textarea::placeholder {
    color: var(--cream-muted);
    font-style: italic;
}

.cipher-panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    background-color: rgba(0, 0, 0, 0.15);
    border-top: 1px solid var(--border);
    min-height: 36px;
}

.key-arrow-btn {
    background-color: rgba(201, 168, 76, 0.1);
    border: none;
    color: var(--gold);
    font-size: 1.1rem;
    font-weight: 700;
    width: 36px;
    height: 42px;
    cursor: pointer;
    flex-shrink: 0;
}

.key-arrow-btn:hover {
    background-color: rgba(201, 168, 76, 0.2);
}

.key-input {
    width: 50px;
    background: transparent;
    border: none;
    outline: none;
    color: var(--gold);
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
}

.key-input::-webkit-outer-spin-button,
.key-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.cipher-output-state {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    min-height: 200px;
}

.result-text {
    font-family: var(--font-body);
    font-size: 1.05rem;
    color: var(--gold-light);
    line-height: 1.8;
    letter-spacing: 0.04em;
    word-break: break-all;
    margin: 0;
    width: 100%;
}

.brute-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 0.75rem 1rem;
    cursor: pointer;
}

.brute-card:hover {
    border-color: var(--gold-dim);
    background-color: var(--bg-card-hover);
}

.brute-card-key {
    font-family: var(--font-display);
    font-size: 0.62rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-dim);
    margin-bottom: 0.25rem;
}

.brute-card-text {
    font-size: 0.88rem;
    color: var(--cream-dim);
    word-break: break-all;
    margin: 0;
    line-height: 1.5;
}

@media (max-width: 991px) {
    .col-lg-2 .d-flex {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
}