/* Layout and component styles. All colours come from css/themes.css. */

html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    background: var(--color-canvas);
    color: var(--color-text);
    font: 12px/1.4 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    accent-color: var(--color-accent);
}

/* ---- full-window canvas behind the floating panels ---- */
main {
    position: fixed;
    inset: 0;
    background: var(--color-plot-bg);
}

#view {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

.cap {
    position: absolute;
    bottom: 8px;
    color: var(--color-plot-caption);
    font-size: 11px;
    letter-spacing: 0.01em;
    pointer-events: none;
    text-shadow: 0 1px 2px var(--color-cap-shadow);
}

.cap.left {
    left: 10px;
}

.cap.right {
    left: calc(50% + 8px);
}

/* ---- floating panels ---- */
.panel {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 10;
    max-height: calc(100vh - 16px);
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
    min-width: 180px;
    background: color-mix(in oklab, var(--color-surface-1) 86%, transparent);
    -webkit-backdrop-filter: blur(14px) saturate(150%);
    backdrop-filter: blur(14px) saturate(150%);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    box-shadow: 0 12px 32px var(--color-shadow), 0 1px 0 var(--color-highlight) inset;
    animation: panel-in 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
    animation-delay: calc(var(--i, 0) * 60ms);
    transition: box-shadow 0.2s, scale 0.2s;
}

.panel > header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    background: linear-gradient(180deg, var(--color-header-top), var(--color-header-bottom));
    color: var(--color-header-text);
    border-bottom: 1px solid var(--color-border);
    border-radius: 10px 10px 0 0;
    cursor: move;
    user-select: none;
    touch-action: none;
}

.panel > header.dragging {
    cursor: grabbing;
    background: var(--color-surface-active);
}
.panel:has(> header.dragging) {
    scale: 1.012;
    box-shadow: 0 22px 48px var(--color-shadow), 0 0 0 1px var(--color-accent-soft), 0 1px 0 var(--color-highlight) inset;
}

.panel > header .ttl {
    flex: 1;
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.panel > header .ttl::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 8px;
    border-radius: 50%;
    vertical-align: 1px;
    background: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent);
}

.panel > .body {
    padding: 8px 10px 10px;
    min-height: 0;
    overflow: auto;
    animation: body-in 0.28s ease-out backwards;
}

.panel.collapsed {
    height: auto !important;
    min-height: 0 !important;
    resize: none !important;
}

.panel.collapsed > .body {
    display: none;
}

.panel.collapsed > header {
    border-bottom: none;
    border-radius: 10px;
}

.panel.plot, .panel.resizable {
    resize: both;
    overflow: hidden;
}

.panel.plot {
    min-width: 260px;
    min-height: 220px;
}

.panel.resizable {
    min-height: 80px;
}

.panel.plot > .body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0;
    min-height: 0;
    overflow: hidden;
}

.panel.resizable > .body {
    flex: 1;
    min-height: 0;
}

.help {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    border: 1px solid var(--color-help-border);
    color: var(--color-help);
    font-size: 10px;
    font-weight: 600;
    cursor: help;
    flex: none;
    transition: border-color 0.15s, color 0.15s;
}

.help:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.tog {
    border: none;
    background: transparent;
    padding: 0 4px;
    font-size: 12px;
    color: var(--color-icon);
    box-shadow: none;
    transition: rotate 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), color 0.15s;
}

.panel.collapsed > header .tog {
    rotate: -90deg;
}

.tog:hover, .tog:active {
    background: transparent;
    color: var(--color-icon-hover);
    transform: none;
    box-shadow: none;
}

/* ---- controls ---- */
label {
    display: flex;
    align-items: center;
    min-height: 24px;
    margin: 2px 0;
}

label > input[type=number],
label > select {
    margin-left: auto;
}

label > input[type=checkbox] {
    margin: 0 7px 0 0;
}

input[type=number], select {
    width: 112px;
    box-sizing: border-box;
    padding: 3px 6px;
    font: inherit;
    background: var(--color-surface-2);
    color: var(--color-text);
    border: 1px solid var(--color-border-field);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

input[type=number]:hover, select:hover {
    border-color: var(--color-border-strong);
}

input[type=number]:focus-visible, select:focus-visible {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-soft);
}

input[type=number]:disabled, select:disabled, input[type=range]:disabled {
    opacity: 0.5;
}

input[type=range] {
    width: 100%;
    margin: 6px 0 4px;
}

input[type=checkbox] {
    width: 14px;
    height: 14px;
    transition: transform 0.15s;
}
input[type=checkbox]:active {
    transform: scale(0.85);
}

button {
    font: inherit;
    background: var(--color-surface-3);
    color: var(--color-text);
    border: 1px solid var(--color-border-strong);
    border-radius: 6px;
    padding: 4px 9px;
    cursor: pointer;
    box-shadow: 0 1px 0 var(--color-highlight) inset;
    transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.2s;
}

button:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-accent);
}

button:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--color-accent-soft), 0 1px 0 var(--color-highlight) inset;
}

button:active:not(:disabled) {
    transform: translateY(1px);
    transition-duration: 0.05s;
}

button:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-accent-soft);
    border-color: var(--color-accent);
}

button.primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-on-accent);
    font-weight: 600;
}

button.primary:hover {
    background: var(--color-accent-strong);
    border-color: var(--color-accent-strong);
}
button.primary {
    position: relative;
    overflow: hidden;
}
button.primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 30%, oklch(100% 0 0 / 0.35) 50%, transparent 70%);
    transform: translateX(-120%);
    transition: transform 0.6s ease;
    pointer-events: none;
}
button.primary:hover:not(:disabled)::after {
    transform: translateX(120%);
}

button.danger:hover:not(:disabled) {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

button:disabled {
    opacity: 0.4;
    cursor: default;
    transform: none;
}

button:disabled:hover {
    background: var(--color-surface-3);
    border-color: var(--color-border-strong);
}

button.primary:disabled:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.row {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    margin-top: 6px;
}

.info {
    color: var(--color-text-muted);
    font-size: 11px;
    white-space: pre-wrap;
    font-variant-numeric: tabular-nums;
}

.body > .info {
    margin-top: 6px;
    padding: 6px 8px;
    border-radius: 6px;
    background: color-mix(in oklab, var(--color-surface-2) 70%, transparent);
    border: 1px solid var(--color-border-subtle);
}

.body > .info:empty {
    display: none;
}

.sep {
    margin: 12px 0 4px;
    padding-top: 8px;
    border-top: 1px solid var(--color-border);
    font-weight: 600;
    font-size: 10.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-heading);
}

/* ---- progress ---- */
#pbar {
    flex: 1;
    min-width: 80px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    border: none;
    border-radius: 999px;
    overflow: hidden;
    background: var(--color-surface-2);
}

#pbar::-webkit-progress-bar {
    background: var(--color-surface-2);
    border-radius: 999px;
}

#pbar::-webkit-progress-value {
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong));
    border-radius: 999px;
    transition: width 0.2s;
}

#pbar::-moz-progress-bar {
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong));
    border-radius: 999px;
}
body.busy #pbar::-webkit-progress-value {
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong), var(--color-accent));
    background-size: 200% 100%;
    animation: shimmer 1.2s linear infinite;
}
body.busy #pbar::-moz-progress-bar {
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong), var(--color-accent));
    background-size: 200% 100%;
    animation: shimmer 1.2s linear infinite;
}
body.busy #p-manifold > header .ttl::before,
body.busy #p-compute > header .ttl::before {
    animation: dot-pulse 1s ease-in-out infinite;
}

#pstat {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 260px;
}

pre {
    font: 10.5px/1.5 ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
    white-space: pre-wrap;
    margin: 0;
}

#inspector {
    color: var(--color-text);
}

#inspector span[data-tip] {
    border-radius: 3px;
    animation: fade-in 0.3s ease-out backwards;
}

#inspector span[data-tip]:hover {
    background: var(--color-accent-soft);
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px 12px;
    padding: 6px 8px;
    border-bottom: 1px solid var(--color-border-subtle);
}

.toolbar label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 0;
    margin: 0;
    white-space: nowrap;
}

.toolbar label > select {
    width: auto;
    max-width: 190px;
    margin-left: 4px;
}

.toolbar label > input[type=checkbox] {
    margin: 0 2px 0 0;
}

#legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 10px;
    padding: 5px 8px;
    min-height: 16px;
    font-size: 11px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border-subtle);
    font-variant-numeric: tabular-nums;
}

#cbar {
    flex: 1;
    min-width: 80px;
    height: 10px;
    border: 1px solid var(--color-border-field);
    border-radius: 4px;
    image-rendering: auto;
}

.chip {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 4px;
    vertical-align: middle;
    border-radius: 3px;
    border: 1px solid rgba(0, 0, 0, 0.4);
}

/* ---- plot surfaces ---- */
.viewport {
    position: relative;
    flex: 1;
    min-height: 0;
    background: var(--color-plot-bg-2);
    border-radius: 0 0 10px 10px;
    overflow: hidden;
}

.viewport canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
    touch-action: none;
}

/* ---- hover readout ---- */
#tip {
    position: fixed;
    z-index: 100000;
    display: none;
    pointer-events: none;
    padding: 6px 9px;
    max-width: 360px;
    background: var(--color-tip-bg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-tip-border);
    border-radius: 7px;
    box-shadow: 0 8px 24px var(--color-shadow);
    color: var(--color-tip-text);
    font: 11px/1.45 ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
    white-space: pre;
    animation: tip-in 0.14s ease-out;
}

#tip.wrap {
    white-space: pre-wrap;
    font: 11.5px/1.45 Inter, system-ui, sans-serif;
}

#legend [data-tip], #cbar {
    cursor: help;
}

/* ---- journey log ---- */
#journeyList {
    margin: 2px 0 0;
    padding: 0;
    list-style: none;
    font: 10.5px/1.45 ui-monospace, Menlo, Consolas, monospace;
}

#journeyList li {
    padding: 4px 6px;
    margin: 2px 0;
    border-radius: 6px;
    border-left: 2px solid transparent;
    white-space: pre-wrap;
    cursor: pointer;
    color: var(--color-heading);
    transition: background 0.12s, border-color 0.12s;
    animation: li-in 0.3s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
}

#journeyList li:hover {
    background: var(--color-surface-active);
    border-left-color: var(--color-border-strong);
}

#journeyList li.cur {
    background: var(--color-accent-soft);
    border-left-color: var(--color-accent);
    color: var(--color-text);
    cursor: default;
}

/* ---- scrollbars ---- */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-strong) transparent;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-strong);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::selection {
    background: var(--color-accent-soft);
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}
/* ---- theme cross-fade (class toggled briefly by src/ui/theme.js) ---- */
html.theme-anim, html.theme-anim * {
    transition: background-color 0.35s, color 0.35s, border-color 0.35s, box-shadow 0.35s !important;
}
/* ---- keyframes ---- */
@keyframes panel-in {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.98);
    }
}
@keyframes body-in {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
}
@keyframes fade-in {
    from {
        opacity: 0;
    }
}
@keyframes tip-in {
    from {
        opacity: 0;
        transform: translateY(3px);
    }
}
@keyframes li-in {
    from {
        opacity: 0;
        transform: translateX(-6px);
    }
}
@keyframes shimmer {
    to {
        background-position: -200% 0;
    }
}
@keyframes dot-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 4px var(--color-accent);
    }
    50% {
        transform: scale(1.4);
        box-shadow: 0 0 14px var(--color-accent);
    }
}