/* Specific styles for the Base64 Tool */

nav {
    margin-bottom: 2rem;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    display: inline-block;
}

.back-link:hover {
    color: var(--text-primary);
}

.tool-interface {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.panel {
    background: var(--surface-color);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

textarea {
    width: 100%;
    min-height: 200px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: monospace;
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

textarea[readonly] {
    background: rgba(0, 0, 0, 0.4);
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

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

.btn.primary:hover {
    background: #2563eb;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

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

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}