/* =========================================
   ToolCanvas — String Randomizer Styles
   ========================================= */

.generator-card {
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    padding: 24px;
    margin-top: 15px;
}

/* Tab controls */
.config-tabs {
    display: flex;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 24px;
}

.tab-btn {
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.tab-btn:hover {
    color: var(--color-accent);
}

.tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* Workspace Grid: Inputs on Left, Outputs on Right */
.workspace-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

@media (max-width: 768px) {
    .workspace-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

.panel-input, .panel-output {
    display: flex;
    flex-direction: column;
}

.panel-input h3, .panel-output h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

/* Textareas for lists input/output */
textarea {
    width: 100%;
    height: 240px;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    background-color: #ffffff;
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    outline: none;
    resize: vertical;
    line-height: 1.5;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea[readonly] {
    background-color: #f8fafc;
    cursor: default;
}

/* Compact options grid */
.option-grid-compact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 16px;
}

/* Option fields */
.field-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field-item label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.field-item select, .field-item input[type="number"], .field-item input[type="text"] {
    padding: 8px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    background-color: #ffffff;
    font-family: inherit;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.field-item select:focus, .field-item input:focus {
    border-color: var(--color-accent);
}

/* Sliders */
.option-slider-group {
    display: flex;
    flex-direction: column;
}

.slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.slider-value {
    background-color: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    color: var(--color-accent);
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: #cbd5e1;
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

/* Checkboxes */
.checkbox-container {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 28px;
    cursor: pointer;
    font-size: var(--font-size-xs);
    user-select: none;
    color: var(--color-text-secondary);
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 3px;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.checkbox-container:hover input ~ .checkmark {
    border-color: #94a3b8;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.checkmark::after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark::after {
    display: block;
}

.checkbox-container .checkmark::after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent);
    color: #ffffff;
    font-weight: 500;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: var(--font-size-base);
    transition: background-color var(--transition-fast);
    white-space: nowrap;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    text-decoration: none;
}

/* Output actions toolbar */
.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.output-header h3 {
    margin: 0;
}

.output-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid #e2e8f0;
    background: #ffffff;
    color: #64748b;
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn-icon:hover {
    background-color: #f8fafc;
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Tooltip */
.tooltip {
    visibility: hidden;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    color: #ffffff;
    text-align: center;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: var(--font-size-xs);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
    z-index: 10;
}

.tooltip::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #1e293b transparent transparent transparent;
}

.btn-icon:hover .tooltip.show {
    visibility: visible;
    opacity: 1;
}