/* Loop Shaping Control Design Tool Styles */
/* Using Shoelace components with custom overrides */

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: var(--sl-font-sans);
}

/* Application Menu Bar */
#menubar {
    display: flex;
    align-items: center;
    height: 40px;
    padding: 0 12px;
    background-color: var(--sl-color-neutral-100);
    border-bottom: 1px solid var(--sl-color-neutral-200);
    gap: 4px;
}

.app-icon {
    width: 20px;
    height: 20px;
}

.app-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--sl-color-neutral-700);
    padding: 0 8px 0 6px;
}

.app-home-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.app-home-link:hover .app-title {
    color: var(--sl-color-neutral-900);
}

.menubar-spacer {
    flex: 1;
}

/* Menu buttons (shared style for all menubar buttons) */
#menubar sl-button[variant="text"]::part(base) {
    font-size: 14px;
    font-weight: 500;
    padding: 6px 10px;
    height: 32px;
    line-height: 1;
    display: flex;
    align-items: center;
    color: var(--sl-color-neutral-700);
    border-radius: 6px;
}

#menubar sl-button[variant="text"]::part(base):hover {
    background-color: rgba(0, 0, 0, 0.07);
    color: var(--sl-color-neutral-900);
}

#menubar sl-button[variant="text"]::part(label) {
    line-height: 1;
    display: flex;
    align-items: center;
    gap: 4px;
}

#menubar sl-button[variant="text"]::part(caret) {
    margin-left: 2px;
}

/* Buttons without caret should have balanced padding */
#menubar sl-button[variant="text"]:not([caret])::part(base) {
    padding: 6px 8px;
}

/* Icon styling in menu buttons */
#menubar sl-button sl-icon {
    font-size: 16px;
}

/* Right side menu items */
.menu-items {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Menu separator (GitHub-style vertical line) */
.menu-separator {
    width: 1px;
    height: 20px;
    background-color: var(--sl-color-neutral-300);
    margin: 0 8px;
}

/* GitHub link */
.github-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--sl-color-neutral-600);
    border-radius: 6px;
    transition: color 0.15s, background-color 0.15s;
}

.github-link:hover {
    color: var(--sl-color-neutral-900);
    background-color: rgba(0, 0, 0, 0.07);
}

/* QR Code Dialog */
#qr-container {
    display: flex;
    justify-content: center;
    padding: 16px;
}

#qr-dialog::part(panel) {
    box-shadow: none;
    border: 1px solid var(--sl-color-neutral-300);
}

#qr-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 0 16px 16px;
}

#qr-plot-selector {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.qr-plot-label {
    font-size: 14px;
    color: var(--sl-color-neutral-700);
}

#qr-preferred-plot {
    width: 100%;
}

#qr-preferred-plot sl-radio-button {
    flex: 1;
}

#qr-preferred-plot sl-radio-button::part(button) {
    width: 100%;
}

#qr-url-size {
    font-size: 13px;
    color: var(--sl-color-neutral-600);
    text-align: center;
}

/* Dockview Container */
#dockview-container {
    width: 100vw;
    height: calc(100vh - 32px);
}

/* CLS Prevention: Hide app content until layout is ready */
body.app-loading #dockview-container,
body.app-loading #narrow-layout {
    opacity: 0;
}

body.app-ready #dockview-container,
body.app-ready #narrow-layout {
    opacity: 1;
    transition: opacity 0.15s ease-in;
}

/* Hide elements on narrow (mobile) layout */
.wide-only {
    display: inline-flex;
}

/* Panel Container */
.panel-container {
    width: 100%;
    height: 100%;
    overflow: auto;
}


/* Panel Content */
.panel-content {
    padding: 10px 12px;
    height: 100%;
    overflow: auto;
}

.panel-content.panel-plot {
    padding: 0;
    display: flex;
    flex-direction: column;
}

/* Shoelace component customizations */

/* Code textarea styling */
.code-textarea {
    --sl-input-font-family: 'Consolas', 'Monaco', monospace;
    --sl-input-font-size-small: 13px;
    --sl-input-font-size-medium: 13px;
}

.code-textarea::part(textarea) {
    font-family: 'Consolas', 'Monaco', monospace;
}

/* Validation states for sl-textarea */
sl-textarea.is-valid::part(base) {
    border-color: var(--sl-color-success-600);
}

sl-textarea.is-invalid::part(base) {
    border-color: var(--sl-color-danger-600);
}

/* Spacing utilities */
.mb-0 {
    margin-bottom: 0;
}

.mt-2 {
    margin-top: 8px;
}

/* Text Colors using Shoelace variables */
.text-success {
    color: var(--sl-color-success-600) !important;
}

.text-danger {
    color: var(--sl-color-danger-600) !important;
}

.text-muted {
    color: var(--sl-color-neutral-500) !important;
}

.text-warning {
    color: var(--sl-color-warning-600) !important;
}

/* Transfer Function Display */
.tf-row {
    margin-bottom: 4px;
}

.tf-row:last-child {
    margin-bottom: 0;
}

.eq-display-inline {
    display: block;
    text-align: center;
    margin: 4px 0;
}

.eq-display-inline .katex {
    font-size: 0.9em;
}

/* Slider Styles */
#sliders-container,
#narrow-sliders-container {
    padding-top: 12px; /* Space for tooltip above first slider */
}

.slider-row {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--sl-color-neutral-100);
}

.slider-row:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Main slider row (always visible) */
.slider-main {
    display: flex;
    align-items: center;
    gap: 8px;
}

.slider-main .slider-name {
    width: 50px;
    flex-shrink: 0;
    --sl-input-height-small: 26px;
}

.slider-main .slider-name::part(input) {
    padding: 0 6px;
}

.slider-main sl-range {
    flex: 1;
    --thumb-size: 16px;
    --track-color-active: var(--sl-color-primary-600);
    --track-color-inactive: var(--sl-color-neutral-200);
}

/* Ensure slider tooltip appears above Dockview panel tabs */
.slider-main sl-range::part(tooltip) {
    z-index: 99999;
}

.slider-value {
    min-width: 60px;
    padding: 4px 6px;
    text-align: right;
    font-family: monospace;
    font-size: 12px;
    color: var(--sl-color-primary-600);
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.15s;
}

.slider-value:hover {
    background-color: var(--sl-color-neutral-100);
}

.slider-settings-toggle {
    font-size: 16px;
    color: var(--sl-color-neutral-500);
    flex-shrink: 0;
}

.slider-settings-toggle:hover {
    color: var(--sl-color-neutral-700);
}

/* Collapsible settings panel */
.slider-settings {
    display: grid;
    grid-template-columns: repeat(4, auto);
    gap: 8px 12px;
    align-items: center;
    border-top: 1px dashed var(--sl-color-neutral-200);
    overflow: hidden;
    max-height: 0;
    padding-top: 0;
    margin-top: 0;
    opacity: 0;
    transition: max-height 0.2s ease-out, opacity 0.2s ease-out,
                padding-top 0.2s ease-out, margin-top 0.2s ease-out;
}

.slider-settings.expanded {
    max-height: 60px;
    opacity: 1;
    padding-top: 10px;
    margin-top: 8px;
}

.slider-settings-row {
    display: flex;
    align-items: center;
    gap: 4px;
}

.slider-settings-row label {
    font-size: 11px;
    color: var(--sl-color-neutral-600);
    min-width: 28px;
}

.slider-settings sl-input {
    width: 70px;
    --sl-input-height-small: 26px;
}

.slider-settings sl-input::part(input) {
    padding: 0 6px;
    text-align: right;
}

.slider-settings sl-checkbox {
    --sl-font-size-small: 12px;
}

.slider-settings .remove-slider {
    font-size: 16px;
    color: var(--sl-color-danger-600);
}

/* Direct value input */
.slider-value-input {
    width: 70px;
    --sl-input-height-small: 26px;
}

.slider-value-input::part(input) {
    text-align: right;
    font-family: monospace;
    font-size: 12px;
    padding: 0 6px;
}

/* Plot Wrapper */
.plot-wrapper {
    flex: 1;
    min-height: 100px;
    overflow: hidden;
}

.plot-wrapper canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Bode Plot Options */
.bode-options {
    display: flex;
    gap: 16px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--sl-color-neutral-200);
    align-items: center;
}

/* Checkbox label colors for L(s) - cyan */
.bode-label-L {
    --sl-color-primary-600: #0088aa;
}
.bode-label-L::part(label) {
    color: #0088aa;
    font-weight: 600;
    font-size: 13px;
}

/* Checkbox label colors for T(s) - orange */
.bode-label-T {
    --sl-color-primary-600: #dd6600;
}
.bode-label-T::part(label) {
    color: #dd6600;
    font-weight: 600;
    font-size: 13px;
}

/* Checkbox label colors for S(s) - green */
.bode-label-S {
    --sl-color-primary-600: #22aa44;
}
.bode-label-S::part(label) {
    color: #22aa44;
    font-weight: 600;
    font-size: 13px;
}

/* Pole-Zero Plot Options */
.pole-options {
    display: flex;
    gap: 16px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--sl-color-neutral-200);
    align-items: center;
}

/* Nyquist Plot Options (for narrow layout menu button) */
.nyquist-options {
    display: flex;
    gap: 16px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--sl-color-neutral-200);
    align-items: center;
    justify-content: flex-end;
}

/* Plot menu button (three-dots) in narrow layout */
.plot-menu-btn {
    margin-left: auto;
    font-size: 18px;
    color: var(--sl-color-neutral-600);
}

.plot-menu-btn:hover {
    color: var(--sl-color-neutral-900);
}

.pole-label-L {
    --sl-color-primary-600: #0088aa;
}
.pole-label-L::part(label) {
    color: #0088aa;
    font-weight: 600;
}

.pole-label-T {
    --sl-color-primary-600: #dd6600;
}
.pole-label-T::part(label) {
    color: #dd6600;
    font-weight: 600;
}

/* Step Response Plot Options */
.step-options {
    display: flex;
    gap: 16px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--sl-color-neutral-200);
    align-items: center;
}

.step-label-L {
    --sl-color-primary-600: #0088aa;
}
.step-label-L::part(label) {
    color: #0088aa;
    font-weight: 600;
}

.step-label-T {
    --sl-color-primary-600: #dd6600;
}
.step-label-T::part(label) {
    color: #dd6600;
    font-weight: 600;
}

.step-time-control {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}

.step-time-label {
    font-size: 12px;
    color: var(--sl-color-neutral-600);
}

.step-time-input {
    width: 70px;
}

.step-time-input::part(input) {
    text-align: right;
    padding: 0 6px;
}

.step-time-unit {
    font-size: 12px;
    color: var(--sl-color-neutral-500);
}

/* Nyquist Plot Mapping Overlay */
.nyquist-mapping-overlay {
    position: absolute;
    bottom: 8px;
    right: 10px;
    font-size: 11px;
    color: #666;
    background: rgba(255, 255, 255, 0.85);
    padding: 2px 6px;
    border-radius: 3px;
    pointer-events: none;
}

.nyquist-mapping-text {
    color: #888;
}

#nyquist-wrapper,
#narrow-nyquist-wrapper {
    position: relative;
}

.nyquist-s-value-overlay {
    position: absolute;
    top: 8px;
    left: 10px;
    font-size: 13px;
    color: #333333;
    pointer-events: none;
    min-height: 20px;
    line-height: 1.5;
}

.nyquist-s-value-overlay .katex {
    font-size: 14px;
}

/* Nyquist Animation Controls */
.nyquist-animation-controls {
    position: absolute;
    bottom: 8px;
    left: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 8px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Shoelace sl-icon-button for play/pause */
.nyquist-play-btn {
    font-size: 1.2rem;
    color: #0088aa;
}

/* Shoelace sl-range for seek bar */
.nyquist-seek-bar {
    width: 120px;
    --sl-color-primary-600: #0088aa;
    --thumb-size: 14px;
}

/* Speed button */
.nyquist-speed-btn {
    font-size: 11px;
    font-family: Consolas, monospace;
    color: #0088aa;
    background: transparent;
    border: 1px solid #0088aa;
    border-radius: 3px;
    padding: 2px 6px;
    cursor: pointer;
    min-width: 36px;
    transition: background-color 0.15s, color 0.15s;
}

.nyquist-speed-btn:hover {
    background: #0088aa;
    color: #ffffff;
}

/* Stability Panel */
.stability-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.stability-label {
    font-weight: 600;
}

.stability-info,
.nyquist-info {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
    margin-bottom: 8px;
}

.info-row {
    font-size: 13px;
}

.poles-section {
    font-size: 13px;
}

/* Responsive adjustments for small panels */
@media (max-width: 400px) {
    .slider-main .slider-name {
        width: 45px;
    }

    .slider-main {
        gap: 4px;
    }

    .slider-value {
        min-width: 50px;
        padding: 2px 4px;
    }

    .slider-settings {
        grid-template-columns: repeat(2, auto);
        gap: 6px 8px;
    }

    .slider-settings.expanded {
        max-height: 100px;
    }
}

/* Narrow Screen Layout */
#narrow-layout {
    display: none;
}

@media (max-width: 767px) {
    body {
        overflow: auto;
        /* Prevent native pinch-to-zoom on mobile */
        touch-action: pan-x pan-y;
    }

    #dockview-container {
        display: none;
    }

    #narrow-layout {
        display: block;
        padding-bottom: 20px;
    }

    .wide-only {
        display: none !important;
    }

    /* Hide menu text labels on narrow screens (icon-only) */
    .menu-label {
        display: none;
    }

    /* Hide caret on narrow screens for compare dropdown */
    #compare-dropdown sl-button::part(caret) {
        display: none;
    }

    /* Icon-only menu buttons on narrow screens */
    #menubar sl-button[variant="text"]::part(base) {
        padding: 6px;
        min-width: 32px;
        justify-content: center;
    }

    #menubar sl-button[variant="text"]::part(label) {
        padding: 0;  /* Remove Shoelace default label padding */
    }

    .narrow-panel {
        border-bottom: 1px solid var(--sl-color-neutral-200);
    }

    .narrow-panel-header {
        padding: 8px 12px;
        background-color: var(--sl-color-neutral-100);
        font-size: 13px;
        font-weight: 600;
        color: var(--sl-color-neutral-900);
        border-bottom: 1px solid var(--sl-color-neutral-200);
    }

    .narrow-panel .panel-content {
        height: auto;
        overflow: visible;
    }

    .narrow-panel .panel-content.panel-plot {
        height: auto;
    }

    .narrow-plot-wrapper {
        height: 350px;
        flex: none;
        /* Allow vertical panning for page scroll, pinch gestures handled by JS */
        touch-action: pan-y;
    }

    .narrow-plot-tabs {
        display: flex;
        background-color: var(--sl-color-neutral-100);
        border-bottom: 1px solid var(--sl-color-neutral-200);
    }

    .narrow-tab-btn {
        flex: 1;
        padding: 10px 12px;
        border: none;
        background: transparent;
        font-size: 13px;
        font-weight: 600;
        color: var(--sl-color-neutral-600);
        cursor: pointer;
        border-bottom: 2px solid transparent;
    }

    .narrow-tab-btn.active {
        color: var(--sl-color-primary-600);
        border-bottom-color: var(--sl-color-primary-600);
        background-color: var(--sl-color-neutral-0);
    }

    .narrow-tab-btn:not(.active):hover {
        background-color: var(--sl-color-neutral-200);
    }
}

/* Context Menu */

/* Anchor for sl-popup (moved to cursor position by JS) */
.context-menu-anchor {
    position: fixed;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

#bode-context-menu,
#nyquist-context-menu {
    /* Keep above Dockview (some overlays are transparent but still capture clicks). */
    z-index: 2147483647 !important;
    pointer-events: auto !important;
}

/* Primary: ensure the popup panel itself is above everything */
#bode-context-menu::part(popup),
#nyquist-context-menu::part(popup) {
    z-index: 2147483647 !important;
    pointer-events: auto !important;
}

#bode-context-menu-inner,
#nyquist-context-menu-inner {
    min-width: 220px;
    background: var(--sl-color-neutral-0);
    border: 1px solid var(--sl-color-neutral-200);
    border-radius: var(--sl-border-radius-medium);
    box-shadow: var(--sl-shadow-large);
}

/* Bode Custom Range Panel */
.bode-custom-range-panel {
    padding: 8px 16px;
    background: var(--sl-color-neutral-50);
}

.range-input-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.range-input-row:last-child {
    margin-bottom: 0;
}

.range-label {
    font-size: 12px;
    color: var(--sl-color-neutral-700);
    min-width: 70px;
}

.range-input {
    width: 70px;
}

.range-input::part(input) {
    text-align: right;
    padding: 0 6px;
}

.range-separator {
    color: var(--sl-color-neutral-500);
    font-size: 12px;
}

.range-unit {
    color: var(--sl-color-neutral-500);
    font-size: 11px;
    margin-left: 2px;
}

/* Export Code Dialog */
#export-dialog::part(panel) {
    box-shadow: none;
    border: 1px solid var(--sl-color-neutral-300);
    max-width: 600px;
}

#export-dialog::part(body) {
    padding: 0;
}

.export-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--sl-color-neutral-200);
}

.export-tab-btn {
    padding: 10px 20px;
    border: none;
    background: transparent;
    font-size: 13px;
    font-weight: 600;
    color: var(--sl-color-neutral-600);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color 0.15s, border-color 0.15s, background-color 0.15s;
}

.export-tab-btn.active {
    color: var(--sl-color-primary-600);
    border-bottom-color: var(--sl-color-primary-600);
    background-color: var(--sl-color-neutral-50);
}

.export-tab-btn:not(.active):hover {
    background-color: var(--sl-color-neutral-100);
    color: var(--sl-color-neutral-900);
}

.export-content {
    padding: 0;
    max-height: 400px;
    overflow: auto;
}

.export-code {
    margin: 0;
    padding: 16px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.5;
    background-color: var(--sl-color-neutral-50);
    color: var(--sl-color-neutral-900);
    white-space: pre;
    overflow-x: auto;
    min-height: 200px;
    user-select: text;
}

.export-code::selection {
    background-color: var(--sl-color-primary-200);
}

/* Examples Dialog */
#examples-dialog::part(panel) {
    box-shadow: none;
    border: 1px solid var(--sl-color-neutral-300);
    max-width: 600px;
}

#examples-dialog::part(body) {
    padding: 0;
}

.examples-content {
    padding: 0;
}

.examples-section {
    border-bottom: 1px solid var(--sl-color-neutral-200);
}

.examples-section:last-child {
    border-bottom: none;
}

.examples-section-title {
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--sl-color-neutral-700);
    background-color: var(--sl-color-neutral-100);
    border-bottom: 1px solid var(--sl-color-neutral-200);
}

.examples-list {
    padding: 8px 0;
}

.example-item {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    cursor: pointer;
    transition: background-color 0.15s;
    gap: 12px;
}

.example-item:hover {
    background-color: var(--sl-color-neutral-100);
}

.example-name {
    min-width: 140px;
    font-size: 13px;
    font-weight: 500;
    color: var(--sl-color-neutral-800);
}

.example-formula {
    flex: 1;
    display: flex;
    align-items: center;
    overflow: visible;
}

.example-formula .katex {
    font-size: 1em;
    white-space: nowrap;
}

.example-copy-icon {
    color: var(--sl-color-neutral-500);
    font-size: 16px;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
}

.example-item:hover .example-copy-icon {
    opacity: 1;
}

.example-item-copied {
    background-color: var(--sl-color-success-100) !important;
}

.example-item-copied .example-copy-icon {
    color: var(--sl-color-success-600);
    opacity: 1;
}