/* ============================================================
   se.fragment — GLSL shader editor
   Mono-typographic instrument. v0.4
   ============================================================ */

:root {
    /* Ink & paper */
    --paper:        oklch(86% 0.025 75);
    --paper-dim:    oklch(70% 0.030 70);
    --paper-muted:  oklch(54% 0.025 65);
    --paper-faint:  oklch(40% 0.020 65);

    --ink:          oklch(11% 0.012 30);
    --ink-glass:    color-mix(in oklab, oklch(11% 0.012 30) 92%, transparent);
    --ink-card:     color-mix(in oklab, oklch(9% 0.010 30) 95%, transparent);
    --editor-panel-opacity: 0.95;
    --ink-rail:     color-mix(in oklab, oklch(8% 0.010 30) 78%, transparent);

    --rule:         oklch(35% 0.020 70);
    --rule-soft:    oklch(28% 0.015 70);
    --rule-hair:    color-mix(in oklab, var(--paper) 18%, transparent);

    /* Accent */
    --vermillion:       oklch(64% 0.20 32);
    --vermillion-dim:   oklch(48% 0.15 32);
    --gold:             oklch(72% 0.13 80);
    --wine:             oklch(35% 0.12 24);
    --sage:             oklch(72% 0.13 150);
    --sage-dim:         oklch(56% 0.10 150);

    /* Type */
    --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    /* Geometry */
    --hair: 1px;
    --inset: 28px;
    --rail-h: 48px;

    color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: #000;
    color: var(--paper);
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 400;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "tnum", "calt", "ss01";
}

/* ============================================================
   Canvas & decorative chrome
   ============================================================ */

#canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: block;
}

.grain {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 2;
    opacity: 0.05;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1  0 0 0 0 0.95  0 0 0 0 0.85  0 0 0 0.65 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.vignette {
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 3;
    background:
        radial-gradient(ellipse 140% 100% at 50% 50%, transparent 60%, rgba(0,0,0,0.45) 100%);
}

/* ============================================================
   Welcome overlay (shown once on first load)
   ============================================================ */

.welcome-overlay {
    position: fixed;
    inset: 0;
    z-index: 850;
    display: grid;
    place-items: center;
    padding: 32px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 600ms cubic-bezier(0.2, 0, 0.1, 1);
    background: rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}
.welcome-overlay.is-visible {
    opacity: 1;
    pointer-events: auto;
}
.welcome-overlay.is-dismissed {
    opacity: 0;
    pointer-events: none;
    transition: opacity 320ms ease-out;
}

.welcome-card {
    position: relative;
    width: min(580px, 100%);
    background: color-mix(in oklab, var(--ink) 78%, transparent);
    backdrop-filter: blur(24px) saturate(108%);
    -webkit-backdrop-filter: blur(24px) saturate(108%);
    border: var(--hair) solid var(--rule);
    box-shadow:
        0 32px 64px -16px rgba(0,0,0,0.6),
        inset 0 0 0 var(--hair) var(--rule-hair);
    padding: 36px 36px 28px;
    font-family: var(--mono);
    color: var(--paper);
    transform: translateY(8px);
    transition: transform 600ms cubic-bezier(0.18, 0.8, 0.25, 1);
}
.welcome-overlay.is-visible .welcome-card {
    transform: translateY(0);
}

.welcome-eyebrow {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: var(--hair) solid var(--rule-soft);
}
.welcome-eyebrow .we-mark {
    font-weight: 700;
    font-size: 14px;
    color: var(--paper);
    letter-spacing: -0.01em;
}
.welcome-eyebrow .we-mark::after {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    background: var(--vermillion);
    margin-left: 8px;
    transform: translateY(-1px);
}
.welcome-eyebrow .we-rev {
    font-size: 11px;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-weight: 500;
}

.welcome-title {
    margin: 0 0 14px;
    font-family: var(--mono);
    font-weight: 700;
    font-size: 24px;
    line-height: 1.2;
    color: var(--paper);
    letter-spacing: -0.015em;
}

.welcome-body {
    margin: 0 0 22px;
    font-family: var(--mono);
    font-size: 14px;
    line-height: 1.6;
    color: var(--paper-dim);
}

.welcome-keys {
    margin: 0 0 22px;
    display: grid;
    grid-template-columns: 140px 1fr;
    column-gap: 18px;
    row-gap: 8px;
    font-family: var(--mono);
    font-size: 13px;
}
.welcome-keys > div {
    display: contents;
}
.welcome-keys dt {
    color: var(--vermillion);
    font-weight: 600;
    letter-spacing: 0.04em;
    align-self: baseline;
}
.welcome-keys dd {
    margin: 0;
    color: var(--paper-dim);
    line-height: 1.5;
}
.welcome-keys dd em {
    font-style: normal;
    color: var(--paper);
    font-weight: 600;
    border-bottom: var(--hair) solid var(--vermillion-dim);
    padding-bottom: 1px;
}
.welcome-keys dd em[data-welcome-action] {
    cursor: pointer;
    transition: border-bottom-color 120ms ease;
}
.welcome-keys dd em[data-welcome-action]:hover {
    border-bottom-color: var(--vermillion);
}

.welcome-dismiss {
    padding-top: 16px;
    border-top: var(--hair) solid var(--rule-soft);
    font-size: 11px;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.20em;
    font-weight: 500;
}

/* ============================================================
   Menu bar
   ============================================================ */

#menuBar.menu-bar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: stretch;
    height: var(--rail-h);
    background: var(--ink-rail);
    backdrop-filter: blur(20px) saturate(105%);
    -webkit-backdrop-filter: blur(20px) saturate(105%);
    border-bottom: var(--hair) solid var(--rule);
    box-shadow: 0 1px 0 0 var(--rule-hair) inset, 0 16px 24px -16px rgba(0,0,0,0.55);
    padding: 0 var(--inset);
    color: var(--paper);
    font-family: var(--mono);
}

#menuBar.menu-bar::before {
    content: '';
    position: absolute;
    left: 0; right: 0;
    bottom: -1px;
    height: 4px;
    background-image: repeating-linear-gradient(
        to right,
        var(--rule) 0,
        var(--rule) 1px,
        transparent 1px,
        transparent 8px
    );
    opacity: 0.4;
    pointer-events: none;
}

.masthead {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-right: 20px;
    border-right: var(--hair) solid var(--rule);
    margin-right: 20px;
}

.masthead-mark {
    font-family: var(--mono);
    font-weight: 700;
    font-size: 16px;
    color: var(--paper);
    letter-spacing: -0.02em;
}
.masthead-mark::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--vermillion);
    margin-left: 8px;
    transform: translateY(-1px);
}

.masthead-rev {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 400;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.menu-rail {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1;
}

.menu-mobile {
    display: none;
    align-items: center;
    gap: 8px;
    flex: 1;
}

/* Touch-primary devices (phones, iPads without trackpad): swap to mobile menu */
@media (hover: none) and (pointer: coarse) {
    .menu-rail { display: none; }
    .menu-mobile { display: flex; }
    /* Disable double-tap-to-zoom on interactive chrome */
    button, .menu-item, .menu-option, .shader-row, .cs-button, .cs-option,
    .category-header, .mm-btn, .font-stepper, .dock-stepper, .fs-btn, .dk-btn,
    .gear-btn, .toggle, label.toggle, .close-btn {
        touch-action: manipulation;
    }
    /* Bigger tap targets in editor header for stylus / finger */
    #editorHeader .gear-btn { width: 40px; height: 40px; }
    .font-stepper { min-height: 40px; }
    .font-stepper .fs-btn { min-width: 40px; }
    #applyBtn { min-height: 40px; padding: 10px 16px 9px; }
}
.menu-mobile .mm-btn {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    border: var(--hair) solid var(--rule);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
    text-transform: lowercase;
    letter-spacing: 0.06em;
    padding: 8px 14px 7px;
    cursor: pointer;
    touch-action: manipulation;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 38px;
}
.menu-mobile .mm-primary {
    border-color: color-mix(in oklab, var(--sage-dim) 55%, var(--rule));
}
.menu-mobile .mm-stamp { color: var(--paper); }
.menu-mobile .mm-meta {
    color: var(--paper-faint);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.menu-mobile .mm-btn:active {
    background-color: color-mix(in oklab, var(--vermillion) 12%, transparent);
}

.menu-sep {
    color: var(--paper-faint);
    font-size: 15px;
    padding: 0 2px;
    align-self: center;
    user-select: none;
}

.menu-item {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 14px;
    cursor: pointer;
    height: var(--rail-h);
    align-self: stretch;
}

.menu-item .menu-label {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--paper-dim);
    text-transform: lowercase;
    letter-spacing: 0.06em;
    position: relative;
    padding: 4px 0;
}
.menu-item:hover .menu-label,
.menu-item:focus-within .menu-label {
    color: var(--paper);
}
.menu-item .menu-label::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    bottom: -2px;
    height: var(--hair);
    background: var(--vermillion);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 220ms cubic-bezier(0.2, 0, 0.1, 1);
}
.menu-item:hover .menu-label::after { transform: scaleX(1); }

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 260px;
    background: var(--ink-card);
    backdrop-filter: blur(24px) saturate(110%);
    -webkit-backdrop-filter: blur(24px) saturate(110%);
    border: var(--hair) solid var(--rule);
    box-shadow: 0 24px 48px -12px rgba(0,0,0,0.7), 0 0 0 1px var(--rule-hair) inset;
    padding: 4px;
    display: none;
    z-index: 200;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 160ms ease-out, transform 160ms cubic-bezier(0.2, 0, 0.1, 1);
}

.dropdown.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: dropdownIn 200ms cubic-bezier(0.2, 0, 0.1, 1);
}

@keyframes dropdownIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.menu-option {
    display: grid;
    grid-template-columns: 26px 1fr auto;
    align-items: baseline;
    gap: 12px;
    padding: 10px 14px 9px;
    font-family: var(--mono);
    font-size: 14px;
    color: var(--paper-dim);
    cursor: pointer;
    transition: background-color 80ms ease-out, color 80ms ease-out;
    border-left: 2px solid transparent;
}
.menu-option:hover {
    background: rgba(217, 83, 42, 0.07);
    color: var(--paper);
    border-left-color: var(--vermillion);
}
.menu-option .opt-num {
    color: var(--paper-faint);
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    letter-spacing: 0.04em;
    font-weight: 500;
}
.menu-option:hover .opt-num { color: var(--vermillion); }
.menu-option .opt-name {
    color: inherit;
    font-weight: 500;
    text-transform: lowercase;
}
.menu-option .opt-shortcut {
    color: var(--paper-faint);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.dropdown .separator {
    height: var(--hair);
    background: var(--rule);
    margin: 4px 10px;
}

/* Edit button in menu bar (the primary "open editor" trigger) */
.menu-edit-button {
    display: flex;
    align-items: center;
    gap: 8px;
    border-left: var(--hair) solid var(--rule);
    margin-left: 16px;
    padding-left: 20px;
}
.menu-edit-button button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: var(--hair) solid var(--rule);
    cursor: pointer;
    padding: 8px 14px 7px;
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--paper);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    transition: border-color 160ms ease-out, background-color 160ms ease-out, color 160ms ease-out;
}
.menu-edit-button button:hover {
    border-color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 14%, transparent);
}
.menu-edit-button button.is-active {
    border-color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 22%, transparent);
    color: var(--paper);
}
.menu-edit-button .ed-meta {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--paper-muted);
    letter-spacing: 0.16em;
    font-weight: 500;
}

/* ============================================================
   Editor overlay & card
   ============================================================ */

#editorOverlay {
    position: fixed;
    inset: 0;
    z-index: 900;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 56px 32px;
    background: rgba(0, 0, 0, 0.50);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
#editorOverlay.open {
    display: flex;
    animation: backdropIn 240ms cubic-bezier(0.2, 0, 0.1, 1);
}
@keyframes backdropIn {
    from { background: rgba(0,0,0,0); backdrop-filter: blur(0); }
    to   { background: rgba(0,0,0,0.50); backdrop-filter: blur(8px); }
}

#editorPanel {
    position: relative;
    width: min(1200px, 100%);
    height: 100%;
    max-height: 96dvh;
    background: color-mix(in oklab, oklch(9% 0.010 30) calc(var(--editor-panel-opacity) * 100%), transparent);
    backdrop-filter: blur(28px) saturate(108%);
    -webkit-backdrop-filter: blur(28px) saturate(108%);
    border: var(--hair) solid var(--rule);
    box-shadow:
        0 40px 80px -20px rgba(0,0,0,0.7),
        inset 0 0 0 var(--hair) var(--rule-hair);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: paperSettle 360ms cubic-bezier(0.18, 0.8, 0.25, 1);
}
@keyframes paperSettle {
    from { transform: translateY(8px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}

#editorOverlay.dock-left,
#editorOverlay.dock-right {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    pointer-events: none;
    animation: none;
    padding: 16px;
    align-items: stretch;
}
#editorOverlay.dock-left  { justify-content: flex-start; }
#editorOverlay.dock-right { justify-content: flex-end; }

#editorOverlay.dock-left  #editorPanel,
#editorOverlay.dock-right #editorPanel {
    width: var(--dock-width, 640px);
    height: 100%;
    max-height: none;
    pointer-events: auto;
    animation: none;
}

/* When docked, hide the decorative path-mark (h2 has the name) and tighten header */
#editorOverlay.dock-left  #editorHeader .path-mark,
#editorOverlay.dock-right #editorHeader .path-mark { display: none; }

#editorOverlay.dock-left  #editorHeader,
#editorOverlay.dock-right #editorHeader {
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
    padding: 16px var(--inset) 14px;
}
#editorOverlay.dock-left  #editorHeader h2,
#editorOverlay.dock-right #editorHeader h2 {
    font-size: 20px;
    flex-basis: 100%;
    margin-bottom: 4px;
}

/* Resize handle on the inner edge of the docked panel */
/* Wide invisible hit area for easy grabbing; thin visible line via ::after */
.dock-resize-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 14px;
    cursor: ew-resize;
    z-index: 50;
    display: none;
    background: transparent;
    touch-action: none;
}
#editorOverlay.dock-left  .dock-resize-handle { display: block; right: 0; }
#editorOverlay.dock-right .dock-resize-handle { display: block; left:  0; }
.dock-resize-handle::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 3px;
    background: color-mix(in oklab, var(--vermillion) 30%, transparent);
    transition: background-color 120ms ease-out, width 120ms ease-out;
}
#editorOverlay.dock-left  .dock-resize-handle::after { right: 0; }
#editorOverlay.dock-right .dock-resize-handle::after { left:  0; }
.dock-resize-handle:hover::after,
.dock-resize-handle.is-dragging::after {
    background: color-mix(in oklab, var(--vermillion) 70%, transparent);
    width: 5px;
}

/* While dragging, force the resize cursor everywhere (override cm-content's text cursor) */
body.dock-resizing,
body.dock-resizing * {
    cursor: ew-resize !important;
    user-select: none !important;
}

.bracket {
    position: absolute;
    width: 14px; height: 14px;
    pointer-events: none;
    color: var(--vermillion);
    opacity: 0.7;
}
.bracket.br-tl { top: 8px;    left: 8px;    border-top: var(--hair) solid currentColor; border-left: var(--hair) solid currentColor; }
.bracket.br-tr { top: 8px;    right: 8px;   border-top: var(--hair) solid currentColor; border-right: var(--hair) solid currentColor; }
.bracket.br-bl { bottom: 8px; left: 8px;    border-bottom: var(--hair) solid currentColor; border-left: var(--hair) solid currentColor; }
.bracket.br-br { bottom: 8px; right: 8px;   border-bottom: var(--hair) solid currentColor; border-right: var(--hair) solid currentColor; }

#editorHeader {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    padding: 26px var(--inset) 18px;
    border-bottom: var(--hair) solid var(--rule);
}

/* Path-style section marker: "se / editor .frag ● live" */
.path-mark {
    display: flex;
    align-items: baseline;
    gap: 0;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--paper-muted);
    letter-spacing: 0.04em;
    flex-shrink: 0;
    align-self: flex-end;
    margin-bottom: 8px;
}
.path-mark .path-prefix { color: var(--paper-muted); font-weight: 500; }
.path-mark .path-slash  { color: var(--paper-faint); margin: 0 2px; }
.path-mark .path-name   { color: var(--paper); font-weight: 600; }
.path-mark .path-ext    { color: var(--vermillion); font-weight: 500; }
.path-mark .path-status {
    color: var(--sage);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-left: 14px;
    padding-left: 14px;
    border-left: var(--hair) solid var(--rule);
}

#editorHeader h2 {
    margin: 0;
    flex: 1;
    font-family: var(--mono);
    font-weight: 800;
    font-size: 30px;
    line-height: 1.05;
    color: var(--paper);
    letter-spacing: -0.03em;
    text-transform: uppercase;
    /* allow long shader names to wrap nicely */
    word-break: break-word;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

/* Font size stepper — inline in editor header */
.font-stepper {
    display: inline-flex;
    align-items: stretch;
    border: var(--hair) solid var(--rule);
    align-self: flex-end;
    margin-bottom: 4px;
    height: 34px;
    box-sizing: border-box;
    font-family: var(--mono);
    user-select: none;
}
.font-stepper .fs-btn {
    background: transparent;
    border: none;
    color: var(--paper-dim);
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 500;
    width: 28px;
    cursor: pointer;
    padding: 0;
    transition: color 120ms ease-out, background-color 120ms ease-out;
    display: grid;
    place-items: center;
}
.font-stepper .fs-btn:hover {
    color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 12%, transparent);
}
.font-stepper .fs-btn:active {
    background-color: color-mix(in oklab, var(--vermillion) 22%, transparent);
}
.font-stepper .fs-value {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 1px;
    min-width: 52px;
    padding: 0 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--paper);
    border-left: var(--hair) solid var(--rule);
    border-right: var(--hair) solid var(--rule);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
}
.font-stepper .fs-value small {
    font-size: 10px;
    font-weight: 500;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.10em;
    margin-left: 2px;
}

.dock-stepper {
    display: inline-flex;
    align-items: stretch;
    border: var(--hair) solid var(--rule);
    align-self: flex-end;
    margin-bottom: 4px;
    height: 34px;
    box-sizing: border-box;
    font-family: var(--mono);
    user-select: none;
}
.dock-stepper .dk-btn {
    background: transparent;
    border: none;
    color: var(--paper-dim);
    font-family: var(--mono);
    font-size: 14px;
    font-weight: 500;
    width: 30px;
    cursor: pointer;
    padding: 0;
    transition: color 120ms ease-out, background-color 120ms ease-out;
    display: grid;
    place-items: center;
}
.dock-stepper .dk-btn + .dk-btn {
    border-left: var(--hair) solid var(--rule);
}
.dock-stepper .dk-btn:hover {
    color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 12%, transparent);
}
.dock-stepper .dk-btn:active {
    background-color: color-mix(in oklab, var(--vermillion) 22%, transparent);
}
.dock-stepper .dk-btn.is-active {
    color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 18%, transparent);
}

#editorHeader .gear-btn {
    display: inline-grid;
    place-items: center;
    width: 34px;
    height: 34px;
    box-sizing: border-box;
    padding: 0;
    background: transparent;
    border: var(--hair) solid var(--rule);
    color: var(--paper-dim);
    cursor: pointer;
    align-self: flex-end;
    margin-bottom: 4px;
    transition: color 120ms ease-out, background-color 120ms ease-out, border-color 120ms ease-out;
}
#editorHeader .gear-btn:hover {
    color: var(--vermillion);
    border-color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 12%, transparent);
}
#editorHeader .gear-btn:active {
    background-color: color-mix(in oklab, var(--vermillion) 22%, transparent);
}
#editorHeader .gear-btn svg { display: block; }

#applyBtn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: var(--hair) solid var(--rule);
    color: var(--paper);
    cursor: pointer;
    height: 34px;
    box-sizing: border-box;
    padding: 0 14px;
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    transition: border-color 160ms ease-out, color 160ms ease-out, background-color 160ms ease-out;
    align-self: flex-end;
    margin-bottom: 4px;
}
#applyBtn:hover {
    border-color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 14%, transparent);
}
#applyBtn .ab-stamp { color: inherit; }
#applyBtn .ab-meta {
    color: var(--paper-muted);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
}

/* Error overlay */
#errorMsg {
    display: none;
    padding: 14px var(--inset);
    border-bottom: var(--hair) solid var(--vermillion-dim);
    background: linear-gradient(180deg,
        color-mix(in oklab, var(--vermillion) 15%, transparent),
        color-mix(in oklab, var(--vermillion) 8%, transparent));
    color: var(--paper);
    font-family: var(--mono);
    font-size: 13px;
    white-space: pre-wrap;
    max-height: 140px;
    overflow-y: auto;
    line-height: 1.5;
    position: relative;
}
#errorMsg.show {
    display: block;
    animation: inkBleed 220ms ease-out;
}
#errorMsg::before {
    content: 'COMPILE.ERROR';
    position: absolute;
    top: 10px;
    right: var(--inset);
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--vermillion);
}
@keyframes inkBleed {
    from { background-color: rgba(217,83,42,0.4); }
    to   { background-color: transparent; }
}

#codeContainer {
    flex: 1;
    min-height: 0;
    position: relative;
    overflow: hidden;
}
#codeContainer .cm-editor { height: 100%; outline: none; }
#codeContainer .cm-editor.cm-focused { outline: none; }

#editorFooter {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1.6fr;
    gap: 0;
    padding: 14px var(--inset) 16px;
    border-top: var(--hair) solid var(--rule);
    background: color-mix(in oklab, var(--ink) 60%, transparent);
    font-family: var(--mono);
}
.ef-col {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 0 16px;
    border-left: var(--hair) solid var(--rule-soft);
}
.ef-col:first-child {
    border-left: none;
    padding-left: 0;
}
.ef-label {
    font-size: 11px;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-weight: 600;
}
.ef-value {
    font-size: 12px;
    color: var(--paper-dim);
    letter-spacing: 0.01em;
}

/* ============================================================
   Settings panel
   ============================================================ */

.settings-panel {
    position: fixed;
    inset: 0;
    z-index: 1100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 48px 32px;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.settings-panel.show {
    display: flex;
    animation: backdropIn 220ms ease-out;
}

.settings-content {
    position: relative;
    width: min(720px, 100%);
    max-height: 92vh;
    background: var(--ink-card);
    backdrop-filter: blur(24px) saturate(108%);
    -webkit-backdrop-filter: blur(24px) saturate(108%);
    border: var(--hair) solid var(--rule);
    box-shadow:
        0 32px 64px -16px rgba(0,0,0,0.7),
        inset 0 0 0 var(--hair) var(--rule-hair);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: paperSettle 320ms cubic-bezier(0.18, 0.8, 0.25, 1);
}

.settings-header,
.library-panel-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 20px;
    align-items: flex-end;
    padding: 24px var(--inset) 18px;
    border-bottom: var(--hair) solid var(--rule);
}
.settings-header h2,
.library-panel-header h2 {
    margin: 0;
    font-family: var(--mono);
    font-weight: 800;
    font-size: 30px;
    line-height: 1.0;
    color: var(--paper);
    letter-spacing: -0.03em;
    text-transform: uppercase;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--paper-muted);
    cursor: pointer;
    font-family: var(--mono);
    font-size: 24px;
    font-weight: 400;
    line-height: 1;
    padding: 0 6px;
    transition: color 140ms ease-out, transform 140ms ease-out;
    align-self: flex-end;
    margin-bottom: 4px;
}
.close-btn:hover { color: var(--vermillion); transform: rotate(90deg); }

.settings-body {
    padding: 12px var(--inset);
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow-y: auto;
}

.setting-row {
    display: grid;
    grid-template-columns: 36px 1fr auto;
    grid-template-rows: auto auto;
    grid-template-areas:
        "num label   ctrl"
        ".   meta    ctrl";
    column-gap: 16px;
    row-gap: 4px;
    align-items: center;
    padding: 18px 0;
    border-bottom: var(--hair) solid var(--rule-soft);
}
.setting-row:last-child { border-bottom: none; }
.setting-num {
    grid-area: num;
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--vermillion);
    letter-spacing: 0.08em;
    font-variant-numeric: tabular-nums;
    align-self: center;
}
.setting-label {
    grid-area: label;
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--paper);
    line-height: 1.2;
    letter-spacing: 0.005em;
}
.setting-meta {
    grid-area: meta;
    font-family: var(--mono);
    font-size: 12.5px;
    color: var(--paper-muted);
    letter-spacing: 0.01em;
    font-weight: 400;
}

/* Toggle switch */
.toggle {
    grid-area: ctrl;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    align-self: center;
}
.toggle input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0; height: 0;
    pointer-events: none;
}
.toggle-track {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
    border: var(--hair) solid var(--rule);
    background: transparent;
    transition: border-color 160ms ease-out, background-color 160ms ease-out;
}
.toggle-track::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 3px;
    width: 14px;
    height: 14px;
    background: var(--paper-muted);
    transform: translateY(-50%);
    transition: left 200ms cubic-bezier(0.2, 0, 0.1, 1), background-color 200ms ease-out;
}
.toggle input:checked + .toggle-track {
    border-color: var(--vermillion);
    background: color-mix(in oklab, var(--vermillion) 12%, transparent);
}
.toggle input:checked + .toggle-track::before {
    left: calc(100% - 17px);
    background: var(--vermillion);
}

/* Range */
.range-control {
    grid-area: ctrl;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    align-self: center;
}
.range-control input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    width: 160px;
    height: 20px;
    cursor: pointer;
}
.range-control input[type="range"]::-webkit-slider-runnable-track {
    height: 1px;
    background: var(--rule);
}
.range-control input[type="range"]::-moz-range-track {
    height: 1px;
    background: var(--rule);
    border: none;
}
.range-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--vermillion);
    border: none;
    margin-top: -7px;
    cursor: grab;
    transition: transform 120ms ease-out;
}
.range-control input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--vermillion);
    border: none;
    cursor: grab;
}
.range-control input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.2); }
.range-control .value {
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 600;
    color: var(--paper);
    font-variant-numeric: tabular-nums;
    min-width: 44px;
    text-align: right;
}
.range-control .value small {
    font-size: 11px;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-left: 2px;
    font-weight: 400;
}

/* Select dropdown — terminal-style, matches font-stepper / range aesthetic */
.select-control {
    grid-area: ctrl;
    display: inline-flex;
    align-items: center;
    align-self: center;
    position: relative;
}
.select-control::after {
    content: '▾';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--vermillion);
    pointer-events: none;
    font-size: 11px;
    line-height: 1;
}
.select-control select {
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    border: var(--hair) solid var(--rule);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: 7px 32px 7px 12px;
    cursor: pointer;
    min-width: 180px;
    transition: border-color 160ms ease-out, color 160ms ease-out, background-color 160ms ease-out;
}
.select-control select:hover {
    border-color: var(--vermillion);
    color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 8%, transparent);
}
.select-control select:focus {
    outline: none;
    border-color: var(--vermillion);
}
.select-control select option {
    background: var(--ink-card);
    color: var(--paper);
}

/* ============================================================
   Shader library
   ============================================================ */

.shader-library-panel {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 48px 32px;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.shader-library-panel.show {
    display: flex;
    animation: backdropIn 220ms ease-out;
}
.library-panel-content {
    position: relative;
    width: min(900px, 100%);
    max-height: 94vh;
    background: var(--ink-card);
    backdrop-filter: blur(24px) saturate(108%);
    -webkit-backdrop-filter: blur(24px) saturate(108%);
    border: var(--hair) solid var(--rule);
    box-shadow: 0 32px 64px -16px rgba(0,0,0,0.7), inset 0 0 0 var(--hair) var(--rule-hair);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: paperSettle 320ms cubic-bezier(0.18, 0.8, 0.25, 1);
}

.library-content {
    overflow-y: auto;
    flex: 1;
}

.library-header {
    padding: 14px var(--inset) 0;
    background: var(--ink-card);
    position: sticky;
    top: 0;
    z-index: 5;
}
.library-controls {
    display: grid;
    grid-template-columns: 220px 1fr auto;
    gap: 14px;
    padding-bottom: 14px;
    border-bottom: var(--hair) solid var(--rule);
    align-items: end;
}

.lib-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.lib-field-label {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--paper-muted);
    text-transform: uppercase;
    letter-spacing: 0.22em;
}
.lib-field input {
    background: transparent;
    border: none;
    border-bottom: var(--hair) solid var(--rule);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 15px;
    padding: 4px 0 6px;
    width: 100%;
    transition: border-color 160ms ease-out;
}
.lib-field input:focus {
    outline: none;
    border-bottom-color: var(--vermillion);
}
.lib-field input::placeholder { color: var(--paper-faint); }

.lib-field select.cs-native {
    position: absolute;
    pointer-events: none;
    opacity: 0;
    width: 0;
    height: 0;
}

/* Custom select */
.custom-select { position: relative; }
.cs-button {
    display: flex;
    align-items: baseline;
    gap: 10px;
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: var(--hair) solid var(--rule);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 15px;
    padding: 4px 0 6px;
    cursor: pointer;
    text-align: left;
    transition: border-color 160ms ease-out;
}
.cs-button:hover,
.custom-select.is-open .cs-button {
    border-bottom-color: var(--vermillion);
}
.cs-value { flex: 1; }
.cs-chevron {
    font-size: 11px;
    color: var(--paper-muted);
    transition: transform 200ms ease-out, color 160ms ease-out;
    margin-left: 8px;
}
.custom-select.is-open .cs-chevron {
    transform: rotate(180deg);
    color: var(--vermillion);
}

.cs-popup {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    min-width: 220px;
    margin: 4px 0 0;
    padding: 4px;
    list-style: none;
    background: var(--ink-card);
    backdrop-filter: blur(24px) saturate(110%);
    -webkit-backdrop-filter: blur(24px) saturate(110%);
    border: var(--hair) solid var(--rule);
    box-shadow: 0 24px 48px -12px rgba(0,0,0,0.7), 0 0 0 1px var(--rule-hair) inset;
    z-index: 200;
    display: none;
}
.custom-select.is-open .cs-popup {
    display: block;
    animation: dropdownIn 200ms cubic-bezier(0.2, 0, 0.1, 1);
}

.cs-option {
    display: grid;
    grid-template-columns: 26px 1fr auto;
    align-items: baseline;
    gap: 12px;
    padding: 10px 14px 9px;
    font-family: var(--mono);
    font-size: 14px;
    color: var(--paper-dim);
    cursor: pointer;
    transition: background-color 80ms ease-out, color 80ms ease-out;
    border-left: 2px solid transparent;
}
.cs-option:hover {
    background: rgba(217, 83, 42, 0.07);
    color: var(--paper);
    border-left-color: var(--vermillion);
}
.cs-option.is-selected {
    color: var(--paper);
    border-left-color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 6%, transparent);
}
.cs-option .opt-num {
    color: var(--paper-faint);
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    letter-spacing: 0.04em;
    font-weight: 500;
}
.cs-option.is-selected .opt-num,
.cs-option:hover .opt-num { color: var(--vermillion); }
.cs-option .opt-shortcut {
    color: var(--paper-faint);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.cs-option.is-selected .opt-shortcut { color: var(--vermillion); }

#saveCurrentShader {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    border: var(--hair) solid var(--rule);
    color: var(--paper);
    cursor: pointer;
    padding: 9px 14px 8px;
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    transition: border-color 160ms ease-out, background-color 160ms ease-out;
    align-self: end;
    margin-bottom: 1px;
}
#saveCurrentShader:hover {
    border-color: var(--vermillion);
    background-color: color-mix(in oklab, var(--vermillion) 14%, transparent);
}
#saveCurrentShader .b-meta {
    color: var(--paper-muted);
    font-size: 13px;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.library-sections {
    padding: 8px var(--inset) 24px;
}

.library-category { margin-top: 14px; }

.category-header {
    display: grid;
    grid-template-columns: auto auto 1fr auto auto;
    gap: 14px;
    align-items: baseline;
    padding: 12px 0 10px;
    cursor: pointer;
    border-bottom: var(--hair) solid var(--rule);
    user-select: none;
}
.category-header:hover .category-name { color: var(--vermillion); }

.category-num {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--vermillion);
    letter-spacing: 0.06em;
    min-width: 32px;
    font-variant-numeric: tabular-nums;
}
.category-name {
    font-family: var(--mono);
    font-size: 22px;
    font-weight: 800;
    color: var(--paper);
    letter-spacing: -0.02em;
    text-transform: uppercase;
    transition: color 140ms ease-out;
}
.category-rule {
    height: var(--hair);
    background: repeating-linear-gradient(to right,
        var(--rule-soft) 0,
        var(--rule-soft) 1px,
        transparent 1px,
        transparent 4px);
    align-self: center;
    margin: 0 4px;
}
.category-count {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--paper-muted);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.04em;
    font-weight: 500;
}
.category-count small {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    margin-left: 4px;
    color: var(--paper-faint);
    font-weight: 400;
}
.category-chevron {
    font-size: 13px;
    color: var(--paper-muted);
    transition: transform 200ms ease-out;
    width: 14px;
    text-align: center;
}
.library-category.is-collapsed .category-chevron {
    color: var(--vermillion);
}

.category-items { margin: 6px 0 4px; }

.shader-row {
    display: grid;
    grid-template-columns: 32px 1fr auto;
    gap: 16px;
    padding: 14px 0;
    border-bottom: var(--hair) solid var(--rule-soft);
    align-items: baseline;
    transition: background-color 100ms ease-out;
}
.shader-row:hover {
    background-color: color-mix(in oklab, var(--vermillion) 4%, transparent);
}

.row-num {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--paper-faint);
    font-variant-numeric: tabular-nums;
    align-self: center;
    letter-spacing: 0.04em;
    font-weight: 500;
}

.shader-row-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}
.shader-row-name {
    font-family: var(--mono);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.2;
    color: var(--paper);
    letter-spacing: -0.005em;
}
.shader-row-desc {
    font-family: var(--mono);
    font-size: 12.5px;
    color: var(--paper-muted);
    line-height: 1.4;
    letter-spacing: 0.005em;
}

.shader-row-actions {
    display: flex;
    gap: 10px;
    align-self: center;
}
.shader-row-actions button {
    background: transparent;
    border: var(--hair) solid var(--rule);
    color: var(--paper-dim);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
    padding: 7px 14px 6px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    transition: border-color 140ms ease-out, color 140ms ease-out, background-color 140ms ease-out;
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
}
.shader-row-actions .load-btn {
    border-color: color-mix(in oklab, var(--sage-dim) 55%, var(--rule));
    color: var(--paper);
}
.shader-row-actions .load-btn:hover {
    border-color: var(--sage);
    color: var(--paper);
    background-color: color-mix(in oklab, var(--sage) 14%, transparent);
}
.shader-row-actions .load-btn .b-meta {
    font-size: 13px;
    color: var(--sage);
    font-weight: 500;
}
.shader-row:hover .load-btn {
    border-color: var(--sage-dim);
    background-color: color-mix(in oklab, var(--sage) 6%, transparent);
}
.shader-row-actions .delete-btn:hover {
    border-color: var(--wine);
    color: var(--vermillion);
}

/* Custom badge */
.shader-row.is-custom .shader-row-name::after {
    content: 'CUSTOM';
    display: inline-block;
    margin-left: 12px;
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 700;
    color: var(--vermillion);
    letter-spacing: 0.22em;
    vertical-align: middle;
    border: var(--hair) solid var(--vermillion-dim);
    padding: 2px 6px 1px;
}

/* ============================================================
   Vim indicator
   ============================================================ */

.vim-indicator {
    position: fixed;
    bottom: 18px;
    left: 18px;
    z-index: 200;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px 5px;
    background: color-mix(in oklab, var(--ink) 80%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--hair) solid var(--rule);
    font-family: var(--mono);
    font-size: 11.5px;
    font-weight: 600;
    color: var(--paper-dim);
    text-transform: uppercase;
    letter-spacing: 0.20em;
}
.vim-indicator::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--vermillion);
    box-shadow: 0 0 0 2px color-mix(in oklab, var(--vermillion) 22%, transparent);
    animation: vimPulse 2400ms ease-in-out infinite;
}
@keyframes vimPulse {
    0%, 100% { box-shadow: 0 0 0 2px color-mix(in oklab, var(--vermillion) 22%, transparent); }
    50%      { box-shadow: 0 0 0 5px color-mix(in oklab, var(--vermillion) 0%, transparent); }
}

.ui-restore-hint {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    padding: 6px 14px;
    background: color-mix(in oklab, var(--ink) 80%, transparent);
    backdrop-filter: blur(10px);
    border: var(--hair) solid var(--rule);
    color: var(--paper-dim);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    cursor: pointer;
    transition: opacity 600ms ease-in-out, color 140ms ease-out;
}
.ui-restore-hint:hover {
    color: var(--paper);
    opacity: 1 !important;
}

/* Drag-over */
body.drag-over::after {
    content: 'DROP FRAGMENT';
    position: fixed;
    inset: 24px;
    z-index: 2000;
    display: grid;
    place-items: center;
    border: 2px dashed var(--vermillion);
    font-family: var(--mono);
    font-size: 32px;
    font-weight: 800;
    color: var(--vermillion);
    letter-spacing: 0.10em;
    text-transform: uppercase;
    background: color-mix(in oklab, var(--ink) 70%, transparent);
    backdrop-filter: blur(10px);
    pointer-events: none;
}

/* ============================================================
   Scrollbars & selection
   ============================================================ */

* { scrollbar-width: thin; scrollbar-color: var(--rule) transparent; }
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
    background: var(--rule);
    border: 2px solid transparent;
    background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--vermillion-dim); background-clip: padding-box; }

::selection {
    background: color-mix(in oklab, var(--vermillion) 30%, transparent);
    color: var(--paper);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 720px) {
    :root { --inset: 14px; --rail-h: 52px; }

    #menuBar.menu-bar { padding: 0 var(--inset); overflow: visible; }
    .masthead { padding-right: 12px; margin-right: 12px; gap: 8px; }
    .masthead-rev { display: none; }
    .masthead-mark { font-size: 14px; }

    .menu-rail { display: none; }
    .menu-mobile { display: flex; }
    .menu-edit-button {
        margin-left: 8px;
        padding-left: 12px;
        border-left: var(--hair) solid var(--rule);
    }
    .menu-edit-button button {
        padding: 8px 12px 7px;
        font-size: 12px;
        min-height: 38px;
        touch-action: manipulation;
    }

    #editorOverlay, .settings-panel { padding: 0; }
    .shader-library-panel { padding: 0; }
    #editorOverlay.dock-left,
    #editorOverlay.dock-right {
        justify-content: center;
        pointer-events: auto;
        background: rgba(0, 0, 0, 0.50);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        padding: 0;
    }
    #editorOverlay #editorPanel,
    #editorOverlay.dock-left  #editorPanel,
    #editorOverlay.dock-right #editorPanel {
        width: 100%;
        height: 100dvh;
        max-height: 100dvh;
        border: none;
    }
    .dock-stepper { display: none; }
    .dock-resize-handle { display: none !important; }
    #editorHeader { padding: 14px var(--inset) 10px; flex-wrap: wrap; gap: 12px; }
    #editorHeader h2 {
        font-size: 22px;
        flex: 0 0 100%;
        word-break: normal;
        overflow-wrap: anywhere;
    }
    #editorHeader .gear-btn,
    .font-stepper { min-height: 40px; }
    .font-stepper .fs-btn { min-width: 40px; touch-action: manipulation; }
    #editorHeader .gear-btn { width: 40px; height: 40px; touch-action: manipulation; }
    #applyBtn { padding: 10px 14px 9px; min-height: 40px; touch-action: manipulation; }
    #applyBtn .ab-meta { display: none; }
    #editorFooter { grid-template-columns: 1fr; gap: 10px; }
    .ef-col { border-left: none; padding-left: 0; border-top: var(--hair) solid var(--rule-soft); padding-top: 8px; }
    .ef-col:first-child { border-top: none; padding-top: 0; }

    .settings-header h2, .library-panel-header h2 { font-size: 20px; }
    .library-controls { grid-template-columns: 1fr; }

    /* Library — full-screen sheet with chunky tap targets */
    .library-panel-content {
        width: 100%;
        max-height: 100dvh;
        height: 100dvh;
        border: none;
        border-radius: 0;
    }
    .library-content { padding-bottom: 24px; }
    .shader-row {
        grid-template-columns: 28px 1fr auto;
        gap: 12px;
        padding: 16px 0;
        align-items: center;
        cursor: pointer;
        touch-action: manipulation;
    }
    .shader-row-name { font-size: 15px; }
    .shader-row-desc { font-size: 12px; }
    /* Hide the load button on mobile — the whole row is tappable */
    .shader-row-actions .load-btn { display: none; }
    .shader-row-actions .delete-btn { padding: 8px 12px 7px; min-height: 36px; }
    .shader-row:active {
        background-color: color-mix(in oklab, var(--vermillion) 8%, transparent);
    }
    .category-header { padding: 14px 0; min-height: 44px; touch-action: manipulation; }
}

/* ============================================================
   WebGL-unavailable notice
   Shown when the browser can't start a WebGL context (e.g. Chrome
   with hardware acceleration disabled). The editor stays usable;
   this only explains the blank preview behind it.
   ============================================================ */
.webgl-unsupported {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    pointer-events: none;
}
.webgl-unsupported .wu-card {
    pointer-events: auto;
    max-width: 460px;
    padding: 28px 32px;
    background: var(--ink-card);
    border: var(--hair) solid var(--rule);
    box-shadow: inset 0 0 0 var(--hair) var(--rule-hair);
    color: var(--paper);
}
.webgl-unsupported .wu-title {
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--vermillion);
    margin-bottom: 12px;
}
.webgl-unsupported .wu-body {
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 14px;
}
.webgl-unsupported .wu-hint {
    font-size: 12px;
    line-height: 1.6;
    color: var(--paper-muted);
    margin: 0;
}
.webgl-unsupported .wu-hint code {
    color: var(--paper-dim);
    font-family: var(--mono);
}