/* Digital Signature Generator - unique layout, mobile-first */
.dsg-tool {
    margin-bottom: 2rem;
}

.dsg-card {
    background: var(--bs-body-bg, #fff);
    border-radius: 16px;
    border: 1px solid var(--bs-border-color, #e2e8f0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    padding: clamp(1rem, 4vw, 1.75rem);
}

.dsg-step {
    margin-bottom: 1.25rem;
}

.dsg-step-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-muted, #64748b);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

.dsg-algorithm-group,
.dsg-hash-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.dsg-algo-btn,
.dsg-hash-btn {
    min-height: 44px;
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border: 1px solid var(--bs-border-color, #e2e8f0);
    border-radius: 10px;
    background: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #1e293b);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, color 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.dsg-algo-btn:hover,
.dsg-hash-btn:hover {
    border-color: var(--bs-primary, #2563eb);
    background: rgba(37, 99, 235, 0.06);
}

.dsg-algo-btn.dsg-algo-active,
.dsg-hash-btn.dsg-hash-active {
    border-color: var(--bs-primary, #2563eb);
    background: var(--bs-primary, #2563eb);
    color: #fff;
}

.dsg-algo-info {
    margin-bottom: 1.25rem;
    padding: 0.75rem 1rem;
    background: var(--bs-tertiary-bg, #f1f5f9);
    border-radius: 10px;
    font-size: 0.875rem;
    color: var(--text-muted, #64748b);
}

.dsg-algo-desc {
    margin: 0;
}

.dsg-field {
    margin-bottom: 1.25rem;
}

.dsg-label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--bs-body-color, #1e293b);
    margin-bottom: 0.375rem;
}

.dsg-textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    
    line-height: 1.5;
    border: 1px solid var(--bs-border-color, #e2e8f0);
    border-radius: 10px;
    background: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #1e293b);
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.dsg-textarea::placeholder {
    color: var(--text-muted, #94a3b8);
}

.dsg-textarea:focus {
    outline: none;
    border-color: var(--bs-primary, #2563eb);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.dsg-textarea-key {
    min-height: 88px;
}

.dsg-key-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.dsg-key-format {
    font-size: 0.75rem;
    color: var(--text-muted, #64748b);
}

.dsg-gen-key {
    min-height: 36px;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--bs-border-color, #e2e8f0);
    border-radius: 8px;
    background: var(--bs-body-bg, #fff);
    color: var(--bs-primary, #2563eb);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.dsg-gen-key:hover {
    background: rgba(37, 99, 235, 0.08);
    border-color: var(--bs-primary, #2563eb);
}

.dsg-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
    margin-bottom: 1.25rem;
}

.dsg-btn {
    min-height: 48px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: filter 0.2s, transform 0.1s;
    -webkit-tap-highlight-color: transparent;
}

.dsg-btn:active {
    transform: scale(0.98);
}

.dsg-btn-sign {
    background: var(--bs-primary, #2563eb);
    color: #fff;
}

.dsg-btn-sign:hover {
    filter: brightness(1.08);
}

.dsg-btn-verify {
    background: var(--bs-warning, #f59e0b);
    color: #fff;
}

.dsg-btn-verify:hover {
    filter: brightness(1.08);
}

.dsg-output-field {
    margin-bottom: 0;
}

.dsg-output-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
}

.dsg-copy {
    min-height: 36px;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--bs-border-color, #e2e8f0);
    border-radius: 8px;
    background: var(--bs-body-bg, #fff);
    color: var(--bs-body-color, #1e293b);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.dsg-copy:hover {
    background: var(--bs-tertiary-bg, #f1f5f9);
    border-color: var(--bs-secondary-border, #cbd5e1);
}

.dsg-output {
    min-height: 120px;
    padding: 1rem;
    font-size: 0.875rem;
    
    line-height: 1.5;
    word-break: break-all;
    white-space: pre-wrap;
    background: var(--bs-dark, #1e293b);
    color: #94a3b8;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.dsg-related {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--bs-border-color, #e2e8f0);
}

.dsg-related-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--bs-body-color, #1e293b);
}

.dsg-related-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
}

.dsg-related-link {
    font-size: 0.9375rem;
    color: var(--bs-primary, #2563eb);
    text-decoration: none;
    transition: color 0.2s, text-decoration 0.2s;
}

.dsg-related-link:hover {
    color: var(--bs-primary, #1d4ed8);
    text-decoration: underline;
}

@media (min-width: 576px) {
    .dsg-actions .dsg-btn {
        min-width: 160px;
    }
}

@media (min-width: 768px) {
    .dsg-card {
        padding: 2rem;
    }

    .dsg-step {
        margin-bottom: 1.5rem;
    }

    .dsg-field {
        margin-bottom: 1.5rem;
    }
}