/* Base64 Converter Styles */

/* Textarea Styling */
.textarea-mono {
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
    word-wrap: break-word;
    white-space: pre-wrap;
}

/* Converter Section */
.converter-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

/* Action Buttons */
.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-secondary);
    border-color: var(--primary);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* Utility Section */
.utility-section {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.char-info {
    font-size: 0.875rem;
    color: var(--text-muted);
    min-height: 1.25rem;
}

/* Error Message */
.error-message {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background-color: #fee;
    color: #c33;
    border-radius: 4px;
    font-size: 0.875rem;
    display: none;
    border-left: 4px solid #c33;
}

.error-message.show {
    display: block;
}

/* Results Section */
.result-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    display: none;
}

.result-section.show {
    display: block;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.result-info {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.result-output {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    word-break: break-all;
    white-space: pre-wrap;
    margin: 0;
    max-height: 400px;
    overflow-y: auto;
}

.code-text {
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
    color: var(--primary);
}

/* Quick Reference Section */
.quick-reference {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: 6px;
}

.quick-reference h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.quick-ref-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.quick-ref-section {
    padding: 1rem;
    background-color: var(--bg-primary);
    border-radius: 4px;
    border-left: 4px solid var(--primary);
}

.quick-ref-section p {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.ref-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.ref-list li {
    padding: 0.25rem 0;
    word-break: break-word;
}

.code {
    color: var(--primary);
    font-weight: 600;
}

/* Unit Definition Styling */
.unit-definition {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--primary);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 6px;
}

.unit-definition h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary);
}

.unit-definition p {
    margin-bottom: 0.5rem;
    line-height: 1.6;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.unit-definition p:last-child {
    margin-bottom: 0;
}

.unit-definition strong {
    color: var(--text-primary);
}

/* Sidebar Tips */
.tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.tips-list li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .button-group {
        grid-template-columns: repeat(2, 1fr);
    }

    .utility-section {
        flex-direction: column;
        align-items: flex-start;
    }

    .quick-ref-grid {
        grid-template-columns: 1fr;
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .button-group {
        grid-template-columns: 1fr;
    }

    .result-output {
        max-height: 300px;
    }
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}