/* ===== settings.css ===== */
/* Settings modal, API key, tabs layout, response length controls, custom prompt */

/* ===== Settings Modal ===== */
.settings-section {
    margin-bottom: var(--space-xl);
}

.settings-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

.settings-group {
    margin-bottom: var(--space-lg);
}

.settings-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.theme-selector {
    display: flex;
    gap: var(--space-md);
}

.theme-option {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background-color: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.theme-option:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.theme-option.active {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
    font-weight: 650;
}

.theme-option svg {
    width: 24px;
    height: 24px;
}

.accent-selector {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: var(--space-md);
}

.accent-option {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    border: 3px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.accent-option:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.accent-option.active {
    border-color: var(--color-text-primary);
    box-shadow: 0 0 0 2px var(--color-bg-secondary);
}

.accent-option.active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 20px;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* ===== API Key Settings ===== */
.settings-description {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.lesson-context-select {
    width: 100%;
    padding: 11px 36px 11px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--input-bg);
    color: var(--color-text-primary);
    font: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.lesson-context-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.api-key-input-group {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.api-key-input {
    flex: 1;
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 13px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--input-bg);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.api-key-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--input-bg);
}

/* ===== Compact AI provider cards ===== */
.ai-settings-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-lg);
}

.ai-settings-heading .panel-description {
    margin-bottom: var(--space-lg);
}

.ai-settings-badge {
    flex-shrink: 0;
    margin-top: 4px;
    padding: 5px 9px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-size: 11px;
    font-weight: 650;
    letter-spacing: 0.02em;
}

.ai-provider-settings {
    margin-bottom: var(--space-xl);
}

.ai-provider-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.ai-provider-card {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-bg-secondary);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.ai-provider-card:not(.active):hover {
    transform: translateY(-1px);
    border-color: var(--color-text-tertiary, var(--color-text-secondary));
}

.ai-provider-card.active {
    grid-column: 1 / -1;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent-light);
}

.provider-card-summary {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 11px;
    min-height: 62px;
    padding: 10px 12px;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    cursor: pointer;
}

.provider-card-summary:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -3px;
}

.provider-mark {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 750;
    box-shadow: inset 0 0 0 1px rgba(127, 127, 127, 0.16);
}

[data-provider-card="anthropic"] .provider-mark { background: #d97757; color: #fff; }
[data-provider-card="openai"] .provider-mark { background: #10a37f; color: #fff; }
[data-provider-card="gemini"] .provider-mark { background: linear-gradient(135deg, #4285f4, #9b72cb 58%, #d96570); color: #fff; }
[data-provider-card="xai"] .provider-mark { background: #151515; color: #fff; }
[data-provider-card="deepseek"] .provider-mark { background: #4d6bfe; color: #fff; }

.provider-card-copy {
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.provider-name-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.provider-name-row strong {
    overflow: hidden;
    color: var(--color-text-primary);
    font-size: 13px;
    font-weight: 650;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.provider-connection-state {
    padding: 2px 6px;
    border-radius: 999px;
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.ai-provider-card.connected .provider-connection-state {
    background: #d1fae5;
    color: #065f46;
}

.provider-model-summary {
    overflow: hidden;
    color: var(--color-text-secondary);
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.provider-card-chevron {
    flex: 0 0 auto;
    color: var(--color-text-secondary);
    transition: transform var(--transition-base);
}

.ai-provider-card.active .provider-card-chevron {
    transform: rotate(90deg);
}

.provider-card-controls {
    display: none;
    padding: 2px 14px 14px 59px;
    border-top: 1px solid var(--color-border);
}

.ai-provider-card.active .provider-card-controls {
    display: block;
}

.provider-card-controls > p {
    margin: 11px 0 12px;
    color: var(--color-text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

.provider-field-label {
    display: block;
    margin: 10px 0 6px;
    color: var(--color-text-primary);
    font-size: 11px;
    font-weight: 650;
}

.provider-select-wrap {
    position: relative;
}

.provider-model-select {
    width: 100%;
    appearance: none;
    padding: 10px 36px 10px 11px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background: var(--input-bg);
    color: var(--color-text-primary);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
}

.provider-select-wrap > svg {
    position: absolute;
    top: 50%;
    right: 11px;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    pointer-events: none;
}

.provider-model-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.provider-key-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 7px;
}

.provider-key-row .api-key-input {
    width: 100%;
    padding: 10px 11px;
}

.provider-key-row .btn {
    min-height: 38px;
    padding: 8px 12px;
}

.provider-key-toggle {
    width: 38px;
    padding: 8px !important;
}

.provider-card-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-top: 9px;
    font-size: 11px;
}

.provider-card-actions a,
.provider-disconnect {
    color: var(--color-accent);
    font: inherit;
    text-decoration: none;
}

.provider-card-actions a:hover {
    text-decoration: underline;
}

.provider-disconnect {
    padding: 0;
    border: 0;
    background: none;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.provider-disconnect:hover {
    color: #c0392b;
}

.provider-card-status {
    margin: 8px 0 0 !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    font-size: 11px;
}

.provider-card-status.validating { color: #92400e; }
.provider-card-status.valid { color: #08714f; }
.provider-card-status.invalid { color: #c0392b; }

.provider-privacy-note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin: 11px 2px 0;
    color: var(--color-text-secondary);
    font-size: 11px;
    line-height: 1.45;
}

.provider-privacy-note svg {
    flex: 0 0 auto;
    margin-top: 1px;
}

.api-key-input-group .btn {
    padding: var(--space-md) var(--space-lg);
    white-space: nowrap;
}

.api-key-status {
    padding: var(--space-md);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 14px;
}

.api-key-status.validating {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.api-key-status.valid {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.api-key-status.invalid {
    background-color: #fee;
    color: #c00;
    border: 1px solid #fcc;
}

.status-icon {
    font-size: 16px;
}

.status-icon svg {
    display: block;
    vertical-align: middle;
}

/* Spinner animation for validating state */
.status-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.api-key-help {
    padding: var(--space-lg);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
}

.api-key-help p {
    margin-bottom: var(--space-md);
}

.api-key-help strong {
    color: var(--color-text-primary);
}

.api-key-help ol {
    margin: var(--space-md) 0;
    padding-left: var(--space-xl);
}

.api-key-help ol li {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.api-key-help a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.api-key-help a:hover {
    border-bottom-color: var(--color-accent);
}

.cost-info {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    font-size: 13px;
    line-height: 1.8;
}

/* ===== Settings Tabs Layout ===== */
.settings-container {
    display: grid;
    grid-template-columns: 200px 1fr;
    min-height: 400px;
    max-height: 600px;
}

.settings-tabs {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background-color: var(--color-bg-tertiary);
    border-right: 1px solid var(--color-border);
}

.settings-tab {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: left;
}

.settings-tab:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.settings-tab.active {
    background-color: var(--color-accent-hover);
    color: #fff;
    font-weight: 650;
}

.settings-tab svg {
    flex-shrink: 0;
}

.settings-content {
    position: relative;
    overflow: hidden;
}

.settings-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: var(--space-xl);
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.settings-panel.active {
    opacity: 1;
    pointer-events: auto;
}

.settings-panel h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.panel-description {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

/* About Tab Styles */
.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.about-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.about-section p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.about-section ul {
    list-style: none;
    padding: 0;
}

.about-section ul li {
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
}

.about-section ul li::before {
    content: '';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}


/* ===== Response Length Controls ===== */
.token-limit-control {
    margin: var(--space-md) 0;
}

.token-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border);
    outline: none;
    -webkit-appearance: none;
    margin-bottom: var(--space-md);
}

.token-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.token-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.token-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
}

.token-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.token-display {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.token-display #maxTokensValue {
    color: var(--color-accent);
    font-size: 1.3rem;
}

.token-hint {
    font-size: 0.9rem;
    font-weight: normal;
    color: var(--color-text-secondary);
}

.token-presets {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.preset-btn {
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preset-btn:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.preset-btn.active {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
    font-weight: 650;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

/* ===== Custom Prompt Textarea ===== */
.custom-prompt-textarea {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.6;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--input-bg);
    color: var(--color-text-primary);
    resize: vertical;
    min-height: 120px;
    transition: all var(--transition-base);
}

.custom-prompt-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--input-bg);
}

.custom-prompt-textarea::placeholder {
    color: var(--color-text-tertiary);
    font-style: italic;
}

.prompt-tips {
    margin-top: var(--space-md);
    font-size: 14px;
}

.prompt-tips details {
    background-color: var(--color-bg-tertiary);
    padding: var(--space-md);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
}

.prompt-tips summary {
    font-weight: 600;
    color: var(--color-text-primary);
    user-select: none;
}

.prompt-tips ul {
    margin-top: var(--space-md);
    padding-left: var(--space-xl);
}

.prompt-tips li {
    margin: var(--space-sm) 0;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.prompt-tips strong {
    color: var(--color-text-primary);
}

.prompt-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.prompt-actions .btn {
    flex: 1;
}


/* ===== Pen Feel Settings ===== */

.settings-hint {
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.pen-feel-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.pen-feel-label-min,
.pen-feel-label-max {
    font-size: 12px;
    color: var(--color-text-tertiary);
    white-space: nowrap;
    width: 52px;
    flex-shrink: 0;
}

.pen-feel-label-max {
    text-align: right;
}

/* Taper selector */
.taper-selector {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.taper-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 80px;
}

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

.taper-btn.active {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
    font-weight: 650;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

.taper-btn svg {
    opacity: 0.7;
}

.taper-btn.active svg {
    opacity: 1;
}

/* Toggle switch */
.toggle-label {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    user-select: none;
}

.toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-track {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    background-color: var(--color-border);
    border-radius: 12px;
    transition: background-color var(--transition-fast);
    flex-shrink: 0;
}

.toggle-input:checked + .toggle-track {
    background-color: var(--color-accent);
}

.toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background-color: white;
    border-radius: 50%;
    transition: transform var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle-input:checked + .toggle-track .toggle-thumb {
    transform: translateX(20px);
}

.toggle-text {
    font-size: 14px;
    color: var(--color-text-primary);
}

.output-setting-status {
    margin-top: var(--space-sm);
    color: var(--color-text-tertiary);
    font-size: 12px;
    line-height: 1.5;
}

.output-layout-options {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-md);
}

.output-layout-option {
    position: relative;
    cursor: pointer;
}

.output-layout-option > input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.output-layout-card {
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background: var(--color-bg-secondary);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.output-layout-option:hover .output-layout-card {
    border-color: var(--color-accent);
    background: var(--color-bg-tertiary);
}

.output-layout-option > input:checked + .output-layout-card {
    border-color: var(--color-accent);
    background: var(--color-bg-tertiary);
    box-shadow: 0 0 0 1px var(--color-accent);
}

.output-layout-option > input:focus-visible + .output-layout-card {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

.output-layout-preview {
    width: 58px;
    height: 44px;
    flex: 0 0 58px;
    padding: 5px;
    border-radius: 5px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
}

.output-layout-preview-standard {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.output-layout-preview-standard span {
    width: 100%;
    flex: 1;
    border-radius: 3px;
    background: var(--color-accent);
    opacity: 0.8;
}

.output-layout-preview-storyboard {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3px;
}

.output-layout-preview-storyboard span {
    border-radius: 2px;
    background: var(--color-accent);
    opacity: 0.72;
}

.output-layout-preview-roller {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1px;
    perspective: 90px;
}

.output-layout-preview-roller span {
    width: 14px;
    height: 27px;
    border-radius: 2px;
    background: var(--color-accent);
    opacity: 0.58;
}

.output-layout-preview-roller span:first-child {
    transform: rotateY(38deg);
    transform-origin: right center;
}

.output-layout-preview-roller span:nth-child(2) {
    height: 34px;
    opacity: 0.9;
    transform: translateZ(8px);
}

.output-layout-preview-roller span:last-child {
    transform: rotateY(-38deg);
    transform-origin: left center;
}

.output-layout-copy {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.output-layout-copy strong {
    color: var(--color-text-primary);
    font-size: 14px;
}

.output-layout-copy > span {
    color: var(--color-text-secondary);
    font-size: 12px;
    line-height: 1.4;
}

@media (max-width: 900px) {
    .output-layout-options {
        grid-template-columns: 1fr;
    }

    .ai-provider-grid {
        grid-template-columns: 1fr;
    }

    .ai-provider-card.active {
        grid-column: auto;
    }

    .provider-card-controls {
        padding-left: 14px;
    }
}