.input-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-textarea {
    min-height: 120px;
    resize: vertical;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.input-options {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.algorithm-section .control-group {
    margin-bottom: 2rem;
}

.input-field {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-weight: 500;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(100, 116, 139, 0.1);
}

.input-field:hover {
    border-color: var(--primary-color);
}

.key-options {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.mode-options {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
}

.radio-label input[type="radio"] {
    width: auto;
    margin: 0;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.results-header h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.results-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.hash-result {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    transition: background-color 0.2s;
}

.hash-result:hover {
    background: var(--hover-bg);
}

.hash-header {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 0.75rem;
}

.hash-algorithm {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.95rem;
}

.hash-length {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

.hash-value {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.4;
    padding: 0.5rem;
    background: var(--code-bg);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.message-container {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.message-container.success {
    background: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

.message-container.error {
    background: var(--error-bg);
    color: var(--error-text);
    border: 1px solid var(--error-border);
}

/* Define missing CSS variables for better compatibility */
:root {
    --hover-bg: rgba(100, 116, 139, 0.05);
    --code-bg: #f8fafc;
    --success-bg: #f0fdf4;
    --success-text: #15803d;
    --success-border: #bbf7d0;
    --error-bg: #fef2f2;
    --error-text: #dc2626;
    --error-border: #fecaca;
}

[data-theme="dark"] {
    --hover-bg: rgba(148, 163, 184, 0.1);
    --code-bg: #1e293b;
    --success-bg: #064e3b;
    --success-text: #86efac;
    --success-border: #047857;
    --error-bg: #7f1d1d;
    --error-text: #fca5a5;
    --error-border: #dc2626;
}

/* Verification result styles */
.verification-result.valid {
    border-left: 4px solid #10b981;
    background: linear-gradient(to right, rgba(16, 185, 129, 0.1), transparent);
}

.verification-result.invalid {
    border-left: 4px solid #ef4444;
    background: linear-gradient(to right, rgba(239, 68, 68, 0.1), transparent);
}

.verification-status {
    font-weight: 600;
    font-size: 0.9rem;
}

.verification-status.valid {
    color: #10b981;
}

.verification-status.invalid {
    color: #ef4444;
}

.verification-details {
    margin-top: 1rem;
}

.verification-message {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-weight: 500;
}

.expected-hash {
    margin-top: 1rem;
}

.expected-hash strong {
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Usage guide styles */
.usage-guide {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: left;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hmac-toggle {
    width: 100%;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.hmac-toggle:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.toggle-icon {
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.toggle-icon.expanded {
    transform: rotate(90deg);
}

.hmac-content {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.hmac-content h3 {
    margin: 0 0 1rem 0;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.hmac-content h4 {
    margin: 1.5rem 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 1rem;
}

.hmac-content p {
    margin: 0 0 1rem 0;
    line-height: 1.6;
}

.hmac-content ul, .hmac-content ol {
    margin: 1rem 0;
    padding-left: 1.8rem;
}

.hmac-content li {
    margin: 0.5rem 0;
    line-height: 1.5;
}

.hmac-content strong {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .algorithm-grid {
        grid-template-columns: 1fr;
    }
    
    .results-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .hash-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
}