/* ============================================================
   STACKBOU CANVAS BUILDER — builder.css
   Builder chrome = dark navy. Canvas content = user's palette.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --nav-h: 68px;
    --toolbar-h: 46px;
    --shelf-w: 220px;
    --props-w: 280px;

    --sb-bg:         #060a12;
    --sb-surface:    #0a0f1e;
    --sb-card:       #0f1b30;
    --sb-border:     #162035;
    --sb-border-lt:  #1e2d46;

    --sb-cyan:        #00d4ff;
    --sb-cyan-dim:    rgba(0,212,255,.12);
    --sb-cyan-border: rgba(0,212,255,.25);
    --sb-cyan-glow:   rgba(0,212,255,.08);

    --sb-text:   #dde5f0;
    --sb-dim:    #7a8fa8;
    --sb-muted:  #3d4e68;
    --sb-danger: #ff4444;

    --font-body:    'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Space Grotesk', var(--font-body);
    --font-mono:    'JetBrains Mono', 'Cascadia Code', monospace;

    --radius:    8px;
    --radius-sm: 4px;
    --radius-lg: 12px;

    --shadow-card: 0 1px 3px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3);
    --shadow-glow: 0 0 24px rgba(0,212,255,.15);

    --transition: 0.22s ease;
}

body.sb-builder {
    font-family: var(--font-body);
    background: var(--sb-bg);
    color: var(--sb-text);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ---- SITE NAV ---- */
.site-nav {
    height: var(--nav-h);
    background: rgba(6,10,18,0.97);
    border-bottom: 1px solid var(--sb-border);
    flex-shrink: 0;
    display: flex;
    align-items: center;
}
.nav-container {
    width: 100%;
    padding: 0 clamp(1rem, 3vw, 2rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    height: 100%;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    flex-shrink: 0;
}
.nav-logo-icon { width: 40px; height: 40px; }
.nav-brand-text {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--sb-text);
    transition: color var(--transition);
}
.nav-brand:hover .nav-brand-text { color: var(--sb-cyan); }
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    list-style: none;
}
.nav-link {
    display: block;
    padding: 0.42rem 0.8rem;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--sb-dim);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}
.nav-link:hover { color: var(--sb-text); background: rgba(255,255,255,0.05); }
.nav-link.nav-cta {
    margin-left: 0.2rem;
    padding: 0.38rem 0.85rem;
    background: rgba(255,68,68,0.1);
    border: 1.5px solid rgba(255,68,68,0.4);
    color: #ff7070;
    border-radius: var(--radius);
    font-weight: 600;
}
.nav-link.nav-cta:hover { background: rgba(255,68,68,0.2); border-color: #ff5555; color: #ff9090; }
.nav-link.nav-fresh {
    color: var(--sb-cyan);
    border: 1px solid var(--sb-cyan-border);
    border-radius: var(--radius);
    font-size: 0.84rem;
    font-weight: 600;
}
.nav-link.nav-fresh:hover { background: var(--sb-cyan-glow); border-color: var(--sb-cyan); color: #fff; }
@media (max-width: 900px) {
    .nav-menu li:not(:last-child):not(:nth-last-child(2)) { display: none; }
}
@media (max-width: 580px) {
    .nav-menu { display: none; }
}

/* ---- BUILDER TOOLBAR ---- */
.bldr-toolbar {
    height: var(--toolbar-h);
    background: var(--sb-bg);
    border-bottom: 1px solid var(--sb-border);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 clamp(0.75rem, 2vw, 1.25rem);
    flex-shrink: 0;
    z-index: 200;
}

.bldr-ctrl-label {
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--sb-muted);
    text-transform: uppercase;
    flex-shrink: 0;
}

.bldr-toolbar-mid {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.vp-group { display: flex; gap: 2px; background: var(--sb-card); border-radius: var(--radius-sm); padding: 3px; }
.vp-btn {
    width: 32px; height: 28px;
    border: none; background: transparent; cursor: pointer;
    border-radius: 4px; color: var(--sb-dim);
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.vp-btn:hover { color: var(--sb-text); background: var(--sb-border); }
.vp-btn.active { background: var(--sb-cyan-dim); color: var(--sb-cyan); }
.bldr-canvas-label { font-size: 11px; color: var(--sb-dim); min-width: 50px; text-align: left; }

.bldr-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}
.bldr-divider { width: 1px; height: 20px; background: var(--sb-border); margin: 0 4px; }

.bldr-tbtn {
    display: flex; align-items: center; gap: 6px;
    height: 32px; padding: 0 12px;
    border-radius: var(--radius-sm); font-size: 12.5px; font-weight: 500;
    border: none; cursor: pointer; transition: var(--transition);
    white-space: nowrap;
}
.bldr-tbtn svg { flex-shrink: 0; }
.bldr-tbtn:disabled { opacity: .35; cursor: default; }
.bldr-tbtn-ghost { background: transparent; color: var(--sb-dim); }
.bldr-tbtn-ghost:not(:disabled):hover { background: var(--sb-card); color: var(--sb-text); }
.bldr-tbtn-primary {
    background: var(--sb-cyan); color: #060e1c; font-weight: 700;
}
.bldr-tbtn-primary:hover { background: #22dcff; }

/* ---- MAIN BODY ---- */
.bldr-body {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* ---- LEFT SHELF ---- */
.bldr-shelf {
    width: var(--shelf-w);
    background: var(--sb-surface);
    border-right: 1px solid var(--sb-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
}
.shelf-top { padding: 12px 12px 6px; }
.shelf-hint { font-size: 11px; color: var(--sb-dim); }
.shelf-list { flex: 1; overflow-y: auto; padding: 4px 8px 16px; }
.shelf-list::-webkit-scrollbar { width: 4px; }
.shelf-list::-webkit-scrollbar-thumb { background: var(--sb-border); border-radius: 4px; }

.shelf-cat-label {
    font-size: 10px; text-transform: uppercase; letter-spacing: .1em;
    color: var(--sb-dim); padding: 10px 4px 5px;
}
.shelf-block {
    display: flex; align-items: center; gap: 10px;
    padding: 9px 10px; margin-bottom: 3px;
    background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); cursor: grab;
    transition: var(--transition);
    user-select: none;
}
.shelf-block:hover {
    border-color: var(--sb-cyan); background: var(--sb-cyan-dim);
    color: var(--sb-cyan);
}
.shelf-block.dragging-shelf { opacity: .4; }
.shelf-block-icon {
    width: 28px; height: 20px;
    background: var(--sb-border); border-radius: 3px;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--sb-dim); font-size: 9px;
}
.shelf-block:hover .shelf-block-icon { background: var(--sb-cyan-dim); color: var(--sb-cyan); }
.shelf-block-label { font-size: 12.5px; font-weight: 500; }

/* ---- CANVAS WRAP ---- */
.bldr-canvas-wrap {
    flex: 1;
    background: #0d1526;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}
.bldr-canvas-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 32px 24px;
}
.bldr-canvas-scroll::-webkit-scrollbar { width: 6px; }
.bldr-canvas-scroll::-webkit-scrollbar-thumb { background: var(--sb-border); border-radius: 4px; }

.bldr-canvas-positioner {
    margin: 0 auto;
    transition: max-width 300ms ease;
    position: relative;
    min-height: 100%;
}
.bldr-canvas[data-vp="desktop"] ~ .bldr-canvas-positioner,
#bldr-canvas-positioner[data-vp="desktop"] { max-width: 1200px; }
#bldr-canvas-positioner[data-vp="tablet"]  { max-width: 768px; }
#bldr-canvas-positioner[data-vp="mobile"]  { max-width: 390px; }

.bldr-canvas {
    background: #ffffff;
    box-shadow: 0 8px 48px rgba(0,0,0,.5);
    border-radius: 6px;
    overflow: hidden;
    min-height: 200px;
    position: relative;
}
.bldr-canvas.drag-active { outline: 2px dashed var(--sb-cyan); outline-offset: 3px; }

.canvas-empty {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 64px 32px;
    text-align: center; color: #94a3b8;
    pointer-events: none;
}
.canvas-empty.hidden { display: none; }
.canvas-empty-icon { margin-bottom: 20px; opacity: .5; }
.canvas-empty h3 { font-size: 18px; font-weight: 600; color: #64748b; margin-bottom: 8px; }
.canvas-empty p { font-size: 14px; line-height: 1.6; max-width: 300px; margin-bottom: 20px; }
.canvas-empty-cta {
    padding: 10px 20px; background: var(--sb-cyan); color: #060e1c;
    border: none; border-radius: var(--radius-sm); font-weight: 700;
    font-size: 13px; cursor: pointer; pointer-events: all;
}

/* Drop indicator line */
.drop-indicator {
    height: 3px; background: var(--sb-cyan);
    border-radius: 2px; margin: 0;
    pointer-events: none;
    box-shadow: 0 0 8px var(--sb-cyan);
}

/* ---- BLOCK WRAPPER (inside canvas) ---- */
.cb-block-wrap {
    position: relative;
}
.cb-block-wrap:hover > .cb-block-controls { opacity: 1; }
.cb-block-wrap.is-selected > .cb-block-controls { opacity: 1; }
.cb-block-wrap.is-selected > .cb-block-inner { outline: 2px solid var(--sb-cyan); outline-offset: -2px; }

.cb-block-controls {
    position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    z-index: 10; display: flex; flex-direction: column; gap: 3px;
    opacity: 0; transition: opacity var(--transition);
    background: var(--sb-surface); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 4px;
    pointer-events: all;
    margin-left: -40px;
}
.cb-ctrl-btn {
    width: 28px; height: 28px;
    background: transparent; border: none; border-radius: 4px;
    color: var(--sb-dim); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
    font-size: 11px;
}
.cb-ctrl-btn:hover { background: var(--sb-card); color: var(--sb-text); }
.cb-ctrl-btn.danger:hover { background: rgba(255,79,79,.15); color: var(--sb-danger); }
.cb-ctrl-btn.drag-handle { cursor: grab; }
.cb-ctrl-btn.drag-handle:active { cursor: grabbing; }

/* Top-right block label badge */
.cb-block-badge {
    position: absolute; right: 8px; top: 8px; z-index: 10;
    background: var(--sb-surface); border: 1px solid var(--sb-border);
    color: var(--sb-dim); font-size: 10px; font-weight: 600;
    padding: 2px 7px; border-radius: 20px; letter-spacing: .05em;
    opacity: 0; transition: opacity var(--transition); pointer-events: none;
    text-transform: uppercase;
}
.cb-block-wrap:hover .cb-block-badge,
.cb-block-wrap.is-selected .cb-block-badge { opacity: 1; }

/* ---- PROPS PANEL ---- */
.bldr-props {
    width: var(--props-w);
    background: var(--sb-surface);
    border-left: 1px solid var(--sb-border);
    display: flex; flex-direction: column;
    overflow: hidden; flex-shrink: 0;
}
.props-idle {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 32px 20px; text-align: center; gap: 14px;
    color: var(--sb-dim);
}
.props-idle p { font-size: 13px; line-height: 1.6; }
.props-content {
    flex: 1; overflow-y: auto; padding: 0 0 24px;
}
.props-content::-webkit-scrollbar { width: 4px; }
.props-content::-webkit-scrollbar-thumb { background: var(--sb-border); border-radius: 4px; }

.props-block-head {
    padding: 14px 16px;
    border-bottom: 1px solid var(--sb-border);
    display: flex; align-items: center; gap: 10px;
}
.props-block-icon {
    width: 32px; height: 24px; background: var(--sb-card);
    border-radius: 4px; display: flex; align-items: center;
    justify-content: center; color: var(--sb-cyan); flex-shrink: 0;
}
.props-block-title { font-size: 13px; font-weight: 600; }
.props-block-sub { font-size: 11px; color: var(--sb-dim); margin-top: 1px; }

.prop-section { padding: 14px 16px; border-bottom: 1px solid var(--sb-border); }
.prop-label {
    font-size: 11px; font-weight: 600; text-transform: uppercase;
    letter-spacing: .07em; color: var(--sb-dim); display: block; margin-bottom: 9px;
}
.prop-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.prop-row:last-child { margin-bottom: 0; }

/* Color picker */
.prop-color-picker { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.prop-swatches { display: flex; gap: 5px; flex-wrap: wrap; }
.prop-swatch {
    width: 22px; height: 22px; border-radius: 50%; cursor: pointer;
    border: 2px solid transparent;
    transition: transform var(--transition), border-color var(--transition);
    box-shadow: 0 0 0 1px rgba(255,255,255,.15);
}
.prop-swatch:hover { transform: scale(1.15); }
.prop-swatch.active { border-color: var(--sb-cyan); }

.prop-color-custom {
    display: flex; align-items: center; gap: 6px;
    background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 4px 8px; cursor: pointer;
}
.prop-color-custom:hover { border-color: var(--sb-dim); }
.prop-color-preview { width: 16px; height: 16px; border-radius: 3px; border: 1px solid rgba(255,255,255,.2); }
.prop-color-hex { font-size: 11px; font-family: monospace; color: var(--sb-text); }
input[type="color"].hidden-color { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }

/* Layout variants */
.prop-layouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.prop-layout-opt {
    border: 1px solid var(--sb-border); border-radius: var(--radius-sm);
    padding: 6px 4px; cursor: pointer; text-align: center;
    transition: var(--transition); background: var(--sb-card);
}
.prop-layout-opt:hover { border-color: var(--sb-dim); }
.prop-layout-opt.active { border-color: var(--sb-cyan); background: var(--sb-cyan-dim); color: var(--sb-cyan); }
.prop-layout-thumb {
    height: 28px; background: var(--sb-border); border-radius: 3px;
    margin-bottom: 5px; display: flex; align-items: center; justify-content: center;
    overflow: hidden; gap: 2px; padding: 3px;
}
.plt-bar { background: rgba(255,255,255,.25); border-radius: 2px; flex: 1; height: 100%; }
.prop-layout-label { font-size: 10px; color: var(--sb-dim); }
.prop-layout-opt.active .prop-layout-label { color: var(--sb-cyan); }

/* Toggle switch */
.prop-toggle-row { display: flex; align-items: center; justify-content: space-between; }
.prop-toggle-label { font-size: 12.5px; }
.prop-toggle {
    width: 34px; height: 20px; background: var(--sb-border); border-radius: 10px;
    border: none; cursor: pointer; position: relative; transition: background var(--transition);
    flex-shrink: 0;
}
.prop-toggle.on { background: var(--sb-cyan); }
.prop-toggle::after {
    content: ''; position: absolute; width: 14px; height: 14px;
    background: #fff; border-radius: 50%; top: 3px; left: 3px;
    transition: left var(--transition);
}
.prop-toggle.on::after { left: 17px; }

/* Range slider */
.prop-range {
    width: 100%; accent-color: var(--sb-cyan);
    -webkit-appearance: none; height: 4px;
    background: var(--sb-border); border-radius: 2px; outline: none;
    cursor: pointer;
}
.prop-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px; height: 14px; border-radius: 50%;
    background: var(--sb-cyan); cursor: pointer;
    box-shadow: 0 0 4px rgba(0,212,255,.4);
}

/* Prop text input */
.prop-input {
    width: 100%; background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 7px 10px;
    color: var(--sb-text); font-size: 12.5px; outline: none;
}
.prop-input:focus { border-color: var(--sb-cyan); }

/* Danger zone */
.prop-danger { padding: 14px 16px; display: flex; gap: 8px; }
.prop-danger-btn {
    flex: 1; padding: 7px; border-radius: var(--radius-sm);
    font-size: 12px; font-weight: 500; border: 1px solid;
    cursor: pointer; transition: var(--transition);
    display: flex; align-items: center; justify-content: center; gap: 5px;
}
.prop-danger-btn.delete {
    border-color: rgba(255,79,79,.3); background: transparent; color: var(--sb-danger);
}
.prop-danger-btn.delete:hover { background: rgba(255,79,79,.1); }
.prop-danger-btn.duplicate {
    border-color: var(--sb-border); background: transparent; color: var(--sb-dim);
}
.prop-danger-btn.duplicate:hover { background: var(--sb-card); color: var(--sb-text); }

/* ============================================================
   CANVAS BLOCK STYLES — these look like a real website
   All block .cb-block-inner classes below
   ============================================================ */

.cb-block-inner {
    position: relative;
    cursor: pointer;
}

/* Contenteditable hint */
[contenteditable]:focus {
    outline: 1px dashed var(--sb-cyan);
    outline-offset: 2px;
    border-radius: 2px;
}
[contenteditable]:hover:not(:focus) { outline: 1px dashed rgba(0,212,255,.3); outline-offset: 1px; border-radius: 2px; }

/* --- NAVBAR BLOCK --- */
.cb-navbar {
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background .3s;
}
.cb-navbar-brand {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none;
}
.cb-navbar-logo {
    width: 30px; height: 30px; border-radius: 6px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    flex-shrink: 0;
}
.cb-navbar-name {
    font-size: 16px; font-weight: 700; letter-spacing: -.01em;
    color: inherit; min-width: 60px;
}
.cb-navbar-links { display: flex; gap: 24px; }
.cb-navbar-links span {
    font-size: 14px; cursor: text; color: inherit; opacity: .8; min-width: 30px; display: inline-block;
}
.cb-navbar-cta {
    padding: 8px 18px; border-radius: 6px; font-size: 13px; font-weight: 600;
    border: none; cursor: pointer; min-width: 80px;
}

/* --- HERO BLOCK --- */
.cb-hero { min-height: 420px; display: flex; align-items: center; padding: 64px 48px; position: relative; overflow: hidden; }
.cb-hero-inner { position: relative; z-index: 1; max-width: 680px; }
.cb-hero.layout-center { justify-content: center; text-align: center; }
.cb-hero.layout-center .cb-hero-inner { max-width: 760px; }
.cb-hero.layout-split { gap: 48px; }
.cb-hero-badge {
    display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 12px;
    font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
    margin-bottom: 20px; border: 1px solid currentColor; opacity: .7;
}
.cb-hero h1 { font-size: clamp(32px, 4.5vw, 56px); font-weight: 800; line-height: 1.1; margin-bottom: 18px; letter-spacing: -.02em; }
.cb-hero p { font-size: 17px; line-height: 1.7; margin-bottom: 32px; opacity: .75; max-width: 500px; }
.cb-hero.layout-center p { margin-left: auto; margin-right: auto; }
.cb-hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.cb-hero.layout-center .cb-hero-btns { justify-content: center; }
.cb-btn-primary {
    padding: 13px 26px; border-radius: 7px; font-weight: 700; font-size: 14px;
    border: none; cursor: pointer; min-width: 100px;
}
.cb-btn-secondary {
    padding: 12px 24px; border-radius: 7px; font-weight: 600; font-size: 14px;
    border: 2px solid currentColor; background: transparent; cursor: pointer; min-width: 100px;
}
.cb-hero-image {
    flex: 1; min-height: 280px; border-radius: 12px;
    background: linear-gradient(135deg, rgba(99,102,241,.2) 0%, rgba(139,92,246,.2) 100%);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; max-width: 380px;
}
.cb-img-icon { opacity: .3; }

/* --- FEATURES BLOCK --- */
.cb-features { padding: 72px 48px; }
.cb-section-head { text-align: center; max-width: 560px; margin: 0 auto 48px; }
.cb-section-tag { font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 10px; opacity: .6; display: block; }
.cb-section-head h2 { font-size: clamp(24px, 3vw, 36px); font-weight: 700; line-height: 1.2; margin-bottom: 14px; letter-spacing: -.01em; }
.cb-section-head p { font-size: 16px; line-height: 1.7; opacity: .7; }
.cb-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cb-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.cb-feature-card { padding: 28px; border-radius: 10px; border: 1px solid; }
.cb-feature-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px; font-size: 20px;
}
.cb-feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.cb-feature-card p { font-size: 14px; line-height: 1.7; opacity: .7; }

/* --- ABOUT/SPLIT BLOCK --- */
.cb-about { padding: 72px 48px; display: flex; align-items: center; gap: 64px; }
.cb-about.layout-imgright { flex-direction: row-reverse; }
.cb-about-image {
    flex: 1; min-height: 320px; border-radius: 14px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.cb-about-text { flex: 1; }
.cb-about-text h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 700; margin-bottom: 16px; line-height: 1.2; letter-spacing: -.01em; }
.cb-about-text p { font-size: 15px; line-height: 1.8; opacity: .75; margin-bottom: 24px; }
.cb-about-list { list-style: none; display: flex; flex-direction: column; gap: 8px; margin-bottom: 28px; }
.cb-about-list li { font-size: 14px; display: flex; align-items: center; gap: 8px; opacity: .8; }
.cb-about-list li::before { content: '✓'; font-weight: 700; }

/* --- PORTFOLIO/CARDS BLOCK --- */
.cb-portfolio { padding: 72px 48px; }
.cb-portfolio-card { border-radius: 10px; overflow: hidden; border: 1px solid; }
.cb-portfolio-thumb { height: 180px; display: flex; align-items: center; justify-content: center; }
.cb-portfolio-info { padding: 18px 20px; }
.cb-portfolio-cat { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; opacity: .5; margin-bottom: 6px; display: block; }
.cb-portfolio-info h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.cb-portfolio-info p { font-size: 13.5px; line-height: 1.6; opacity: .7; }

/* --- TESTIMONIALS BLOCK --- */
.cb-testimonials { padding: 72px 48px; }
.cb-testi-card { padding: 28px; border-radius: 12px; border: 1px solid; }
.cb-testi-quote { font-size: 22px; opacity: .3; line-height: 1; margin-bottom: 12px; font-family: Georgia, serif; }
.cb-testi-card p { font-size: 14.5px; line-height: 1.7; opacity: .8; margin-bottom: 20px; font-style: italic; }
.cb-testi-author { display: flex; align-items: center; gap: 12px; }
.cb-testi-avatar { width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0; }
.cb-testi-name { font-size: 13px; font-weight: 700; }
.cb-testi-role { font-size: 12px; opacity: .55; }

/* --- STATS BLOCK --- */
.cb-stats { padding: 64px 48px; }
.cb-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cb-stat-item { text-align: center; padding: 24px 16px; border-radius: 10px; border: 1px solid; }
.cb-stat-number { font-size: clamp(32px, 4vw, 48px); font-weight: 800; line-height: 1; margin-bottom: 8px; letter-spacing: -.02em; }
.cb-stat-label { font-size: 13px; opacity: .65; }

/* --- PROCESS BLOCK --- */
.cb-process { padding: 72px 48px; }
.cb-process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 16px; }
.cb-process-step { padding: 24px 20px; border-radius: 10px; border: 1px solid; position: relative; }
.cb-step-num {
    width: 36px; height: 36px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center; font-weight: 800; font-size: 14px;
    margin-bottom: 16px;
}
.cb-process-step h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.cb-process-step p { font-size: 13px; line-height: 1.7; opacity: .7; }

/* --- CTA BAND BLOCK --- */
.cb-cta { padding: 72px 48px; text-align: center; }
.cb-cta h2 { font-size: clamp(28px, 3.5vw, 44px); font-weight: 800; margin-bottom: 16px; letter-spacing: -.02em; line-height: 1.15; }
.cb-cta p { font-size: 16px; line-height: 1.7; margin-bottom: 32px; opacity: .75; max-width: 500px; margin-left: auto; margin-right: auto; }

/* --- FAQ BLOCK --- */
.cb-faq { padding: 72px 48px; }
.cb-faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
.cb-faq-item { border-radius: 8px; border: 1px solid; overflow: hidden; }
.cb-faq-q {
    padding: 16px 20px; font-size: 15px; font-weight: 600;
    display: flex; justify-content: space-between; align-items: center;
    cursor: pointer;
}
.cb-faq-q::after { content: '+'; font-size: 18px; opacity: .5; flex-shrink: 0; margin-left: 12px; }
.cb-faq-a { padding: 0 20px 16px; font-size: 14px; line-height: 1.7; opacity: .7; }

/* --- CONTACT BLOCK --- */
.cb-contact { padding: 72px 48px; }
.cb-contact-inner { display: grid; grid-template-columns: 1fr 1.3fr; gap: 64px; align-items: start; }
.cb-contact-info h2 { font-size: 32px; font-weight: 700; margin-bottom: 14px; }
.cb-contact-info p { font-size: 15px; line-height: 1.7; opacity: .7; margin-bottom: 24px; }
.cb-contact-detail { display: flex; align-items: center; gap: 10px; font-size: 14px; opacity: .8; margin-bottom: 10px; }
.cb-form { display: flex; flex-direction: column; gap: 14px; }
.cb-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cb-form-field { display: flex; flex-direction: column; gap: 5px; }
.cb-form-field label { font-size: 12px; font-weight: 600; opacity: .6; text-transform: uppercase; letter-spacing: .05em; }
.cb-form-field input, .cb-form-field textarea {
    padding: 10px 14px; border-radius: 7px; border: 1px solid;
    font-size: 14px; outline: none; background: transparent; width: 100%;
    font-family: inherit;
}
.cb-form-field textarea { min-height: 90px; resize: vertical; }
.cb-form-submit {
    padding: 13px 28px; border-radius: 7px; font-weight: 700;
    font-size: 14px; border: none; cursor: pointer; align-self: flex-start;
}

/* --- FOOTER BLOCK --- */
.cb-footer { padding: 56px 48px 24px; }
.cb-footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 48px; }
.cb-footer-brand { }
.cb-footer-brand-name { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.cb-footer-tagline { font-size: 13px; line-height: 1.6; opacity: .6; }
.cb-footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; opacity: .5; margin-bottom: 14px; }
.cb-footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.cb-footer-col ul li { font-size: 14px; opacity: .7; cursor: text; }
.cb-footer-bar { padding-top: 20px; border-top: 1px solid; display: flex; justify-content: space-between; align-items: center; }
.cb-footer-copy { font-size: 12px; opacity: .45; }
.cb-footer-links { display: flex; gap: 16px; }
.cb-footer-links span { font-size: 12px; opacity: .5; cursor: text; }

/* ============================================================
   PREVIEW OVERLAY
   ============================================================ */
.bldr-overlay {
    position: fixed; inset: 0; z-index: 500;
    background: #111; display: flex; flex-direction: column;
}
.bldr-overlay[hidden] { display: none; }
.preview-overlay-bar {
    height: 44px; background: var(--sb-surface);
    border-bottom: 1px solid var(--sb-border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px; flex-shrink: 0;
    font-size: 13px; color: var(--sb-dim);
}
.preview-overlay-bar button {
    background: var(--sb-card); border: 1px solid var(--sb-border);
    color: var(--sb-text); padding: 6px 14px; border-radius: var(--radius-sm);
    cursor: pointer; font-size: 12px;
}
.preview-overlay-frame { flex: 1; overflow-y: auto; background: #fff; }

/* ============================================================
   MODAL
   ============================================================ */
.bldr-modal-bg {
    position: fixed; inset: 0; z-index: 600;
    background: rgba(0,0,0,.7); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center; padding: 20px;
}
.bldr-modal-bg[hidden] { display: none; }
.bldr-modal {
    background: var(--sb-surface); border: 1px solid var(--sb-border);
    border-radius: 12px; width: 100%; max-width: 520px;
    max-height: 90vh; display: flex; flex-direction: column;
    overflow: hidden; box-shadow: 0 24px 80px rgba(0,0,0,.6);
}
.modal-head {
    padding: 20px 24px; border-bottom: 1px solid var(--sb-border);
    display: flex; align-items: center; justify-content: space-between; flex-shrink: 0;
}
.modal-head h2 { font-size: 17px; font-weight: 700; }
.modal-x {
    width: 28px; height: 28px; background: var(--sb-card);
    border: 1px solid var(--sb-border); border-radius: 5px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--sb-dim); flex-shrink: 0;
}
.modal-x:hover { color: var(--sb-text); }
.modal-body { flex: 1; overflow-y: auto; padding: 20px 24px; }
.modal-intro { font-size: 13.5px; color: var(--sb-dim); line-height: 1.6; margin-bottom: 18px; }
.modal-fields { display: flex; flex-direction: column; gap: 12px; margin-bottom: 18px; }
.modal-fields label {
    display: flex; flex-direction: column; gap: 5px;
    font-size: 12px; font-weight: 600; text-transform: uppercase;
    letter-spacing: .06em; color: var(--sb-dim);
}
.modal-fields input, .modal-fields textarea {
    background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 9px 12px;
    color: var(--sb-text); font-size: 13px; outline: none;
    font-family: inherit;
}
.modal-fields input:focus, .modal-fields textarea:focus { border-color: var(--sb-cyan); }
.modal-fields textarea { min-height: 70px; resize: vertical; }
.modal-brief-preview {
    background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 14px;
    font-size: 12px; line-height: 1.8; color: var(--sb-dim);
    white-space: pre-wrap; max-height: 200px; overflow-y: auto;
}
.modal-foot {
    padding: 16px 24px; border-top: 1px solid var(--sb-border);
    display: flex; gap: 10px; justify-content: flex-end; flex-shrink: 0;
}

/* ============================================================
   TOAST
   ============================================================ */
.bldr-toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
    background: #1e2d42; border: 1px solid var(--sb-border);
    color: var(--sb-text); padding: 10px 20px; border-radius: 8px;
    font-size: 13px; z-index: 700; pointer-events: none;
    box-shadow: 0 4px 24px rgba(0,0,0,.4);
}
.bldr-toast[hidden] { display: none; }

/* ============================================================
   DISCLAIMER BANNER
   ============================================================ */
.bldr-disclaimer {
    background: linear-gradient(135deg, rgba(0,212,255,.055) 0%, rgba(99,102,241,.055) 100%);
    border-bottom: 1px solid rgba(0,212,255,.18);
    flex-shrink: 0;
    max-height: 120px;
    overflow: hidden;
    transition: max-height 400ms ease, opacity 350ms ease, padding 350ms ease;
}
.bldr-disclaimer.dismissed {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
}
.disclaimer-inner {
    display: flex; align-items: center; gap: 14px;
    padding: 10px 16px;
}
.disclaimer-spark {
    font-size: 22px; color: var(--sb-cyan); flex-shrink: 0;
    animation: spark-pulse 3s ease-in-out infinite;
    will-change: opacity, transform;
}
@keyframes spark-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: .6; transform: scale(.85) rotate(20deg); }
}
.disclaimer-copy {
    flex: 1; font-size: 12px; line-height: 1.65; color: var(--sb-dim);
}
.disclaimer-copy strong {
    color: var(--sb-text); font-weight: 700;
    display: block; margin-bottom: 3px; font-size: 12.5px;
}
.disclaimer-cta {
    flex-shrink: 0; white-space: nowrap;
    background: transparent; border: 1px solid rgba(0,212,255,.4);
    color: var(--sb-cyan); padding: 7px 14px; border-radius: 20px;
    font-size: 11.5px; font-weight: 700; cursor: pointer; letter-spacing: .01em;
    transition: background var(--transition), color var(--transition);
}
.disclaimer-cta:hover { background: var(--sb-cyan); color: #060e1c; }

@media (max-width: 640px) {
    .disclaimer-inner { flex-direction: column; align-items: flex-start; gap: 8px; padding: 10px 12px; }
    .disclaimer-spark { display: none; }
    .bldr-disclaimer { max-height: 180px; }
}

/* ============================================================
   PROPS PANEL TABS
   ============================================================ */
.props-tab-bar {
    display: flex; border-bottom: 1px solid var(--sb-border);
    flex-shrink: 0;
}
.ptab {
    flex: 1; padding: 11px 8px; font-size: 12px; font-weight: 600;
    background: transparent; border: none; cursor: pointer;
    color: var(--sb-dim); border-bottom: 2px solid transparent;
    transition: var(--transition); margin-bottom: -1px;
}
.ptab:hover { color: var(--sb-text); }
.ptab.active { color: var(--sb-cyan); border-bottom-color: var(--sb-cyan); }

.props-tab-pane { display: flex; flex-direction: column; flex: 1; overflow: hidden; }
.props-tab-pane[hidden] { display: none; }

/* ============================================================
   BRIEF PANEL
   ============================================================ */
.brief-panel { flex: 1; overflow-y: auto; padding: 0 0 32px; }
.brief-panel::-webkit-scrollbar { width: 4px; }
.brief-panel::-webkit-scrollbar-thumb { background: var(--sb-border); border-radius: 4px; }

.brief-section {
    padding: 14px 16px;
    border-bottom: 1px solid var(--sb-border);
}
.brief-section:last-child { border-bottom: none; }
.brief-section-title {
    font-size: 11px; font-weight: 700; text-transform: uppercase;
    letter-spacing: .08em; color: var(--sb-dim);
    display: block; margin-bottom: 11px;
}
.brief-field {
    display: flex; flex-direction: column; gap: 5px; margin-bottom: 10px;
}
.brief-field:last-child { margin-bottom: 0; }
.brief-field label { font-size: 11px; color: var(--sb-dim); }
.brief-field input, .brief-field textarea, .brief-field select {
    width: 100%; background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 8px 10px;
    color: var(--sb-text); font-size: 12.5px; outline: none;
    font-family: inherit; resize: vertical;
}
.brief-field input:focus, .brief-field textarea:focus, .brief-field select:focus { border-color: var(--sb-cyan); }
.brief-field select { background-image: none; }
.brief-field textarea { min-height: 72px; }

/* Budget buttons */
.brief-budget-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.brief-budget-btn {
    padding: 7px 6px; border-radius: var(--radius-sm); font-size: 11.5px; font-weight: 500;
    border: 1px solid var(--sb-border); background: var(--sb-card);
    color: var(--sb-dim); cursor: pointer; transition: var(--transition); text-align: center;
}
.brief-budget-btn:hover { border-color: var(--sb-dim); color: var(--sb-text); }
.brief-budget-btn.active { border-color: var(--sb-cyan); background: var(--sb-cyan-dim); color: var(--sb-cyan); }

/* Vibe sliders */
.brief-vibe { margin-bottom: 12px; }
.brief-vibe:last-child { margin-bottom: 0; }
.brief-vibe-labels { display: flex; justify-content: space-between; margin-bottom: 5px; }
.brief-vibe-labels span { font-size: 10.5px; color: var(--sb-dim); }
.brief-vibe-labels strong { font-size: 10.5px; color: var(--sb-text); }

/* Mood board */
.mb-image-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 8px; }
.mb-image-item {
    aspect-ratio: 1; border-radius: 5px; overflow: hidden;
    position: relative; background: var(--sb-card); border: 1px solid var(--sb-border);
}
.mb-image-item img { width: 100%; height: 100%; object-fit: cover; display: block; }
.mb-image-remove {
    position: absolute; top: 3px; right: 3px;
    width: 18px; height: 18px; border-radius: 50%;
    background: rgba(0,0,0,.6); color: #fff; border: none;
    font-size: 10px; cursor: pointer; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity var(--transition);
}
.mb-image-item:hover .mb-image-remove { opacity: 1; }
.mb-upload-btn {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px; border-radius: var(--radius-sm); font-size: 12px; font-weight: 500;
    border: 1px dashed var(--sb-border); background: transparent;
    color: var(--sb-dim); cursor: pointer; width: 100%;
    transition: var(--transition);
}
.mb-upload-btn:hover { border-color: var(--sb-cyan); color: var(--sb-cyan); }
.mb-upload-btn input { display: none; }

/* Keywords */
.brief-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 8px; min-height: 10px; }
.brief-tag {
    display: flex; align-items: center; gap: 5px;
    padding: 3px 8px 3px 10px; background: var(--sb-cyan-dim);
    border: 1px solid rgba(0,212,255,.25); border-radius: 20px;
    font-size: 11px; color: var(--sb-cyan);
}
.brief-tag button {
    background: none; border: none; color: inherit; cursor: pointer;
    font-size: 13px; line-height: 1; padding: 0; opacity: .7;
}
.brief-tag button:hover { opacity: 1; }
.brief-tag-input {
    display: flex; gap: 6px;
}
.brief-tag-input input {
    flex: 1; background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 6px 9px;
    color: var(--sb-text); font-size: 12px; outline: none;
}
.brief-tag-input input:focus { border-color: var(--sb-cyan); }
.brief-tag-add {
    padding: 6px 10px; background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); color: var(--sb-dim); cursor: pointer;
    font-size: 13px; transition: var(--transition);
}
.brief-tag-add:hover { color: var(--sb-cyan); border-color: var(--sb-cyan); }

/* Ref URLs */
.brief-url-list { display: flex; flex-direction: column; gap: 5px; margin-bottom: 8px; }
.brief-url-item { display: flex; align-items: center; gap: 6px; }
.brief-url-item span {
    flex: 1; font-size: 11px; color: var(--sb-dim); overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap;
    background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: 4px; padding: 4px 8px;
}
.brief-url-item button {
    background: none; border: none; color: var(--sb-dim); cursor: pointer; font-size: 14px;
    flex-shrink: 0; transition: var(--transition);
}
.brief-url-item button:hover { color: var(--sb-danger); }
.brief-url-add { display: flex; gap: 6px; }
.brief-url-add input {
    flex: 1; background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); padding: 6px 9px;
    color: var(--sb-text); font-size: 12px; outline: none;
}
.brief-url-add input:focus { border-color: var(--sb-cyan); }
.brief-url-add button {
    padding: 6px 10px; background: var(--sb-card); border: 1px solid var(--sb-border);
    border-radius: var(--radius-sm); color: var(--sb-dim); cursor: pointer;
    font-size: 11px; white-space: nowrap; transition: var(--transition);
}
.brief-url-add button:hover { color: var(--sb-cyan); border-color: var(--sb-cyan); }

/* Colour swatches in brief */
.brief-color-row { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 6px; }
.brief-color-swatch {
    width: 24px; height: 24px; border-radius: 50%; cursor: pointer; position: relative;
    border: 2px solid transparent; box-shadow: 0 0 0 1px rgba(255,255,255,.15);
    transition: transform var(--transition);
}
.brief-color-swatch:hover { transform: scale(1.15); }
.brief-color-swatch.selected::after {
    content: '✓'; position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 10px; color: #fff; text-shadow: 0 0 3px rgba(0,0,0,.5);
}
.brief-add-color {
    width: 24px; height: 24px; border-radius: 50%;
    border: 1px dashed var(--sb-border); background: transparent;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    color: var(--sb-dim); font-size: 14px;
    transition: var(--transition);
}
.brief-add-color:hover { border-color: var(--sb-cyan); color: var(--sb-cyan); }

/* ============================================================
   CANVAS BLOCK — RESPONSIVE via container queries
   ============================================================ */
.bldr-canvas { container-type: inline-size; container-name: page-canvas; }

@container page-canvas (max-width: 640px) {
    .cb-grid-3, .cb-grid-2 { grid-template-columns: 1fr !important; }
    .cb-stats-grid          { grid-template-columns: 1fr 1fr !important; }
    .cb-process-steps       { grid-template-columns: 1fr 1fr !important; }
    .cb-about               { flex-direction: column !important; }
    .cb-about.layout-imgright { flex-direction: column !important; }
    .cb-about-image         { min-height: 180px !important; max-width: 100% !important; }
    .cb-contact-inner       { grid-template-columns: 1fr !important; }
    .cb-footer-grid         { grid-template-columns: 1fr 1fr !important; }
    .cb-navbar              { padding: 0 16px !important; }
    .cb-navbar-links        { display: none !important; }
    .cb-hero                { padding: 40px 20px !important; min-height: 300px !important; }
    .cb-hero.layout-split   { flex-direction: column !important; }
    .cb-hero-image          { max-width: 100% !important; min-height: 160px !important; }
    .cb-features,
    .cb-portfolio,
    .cb-testimonials,
    .cb-process,
    .cb-stats,
    .cb-about,
    .cb-contact,
    .cb-faq,
    .cb-cta,
    .cb-footer              { padding: 40px 20px !important; }
    .cb-hero-btns           { flex-direction: column !important; gap: 8px !important; }
    .cb-btn-primary,
    .cb-btn-secondary       { width: 100% !important; text-align: center !important; }
    .cb-footer-grid         { grid-template-columns: 1fr !important; }
    .cb-footer-bar          { flex-direction: column !important; gap: 8px !important; }
    .cb-form-row            { grid-template-columns: 1fr !important; }
    .cb-section-head        { margin-bottom: 28px !important; }
}

@container page-canvas (max-width: 420px) {
    .cb-stats-grid          { grid-template-columns: 1fr 1fr !important; }
    .cb-process-steps       { grid-template-columns: 1fr !important; }
    .cb-hero h1             { font-size: 28px !important; }
}

/* ============================================================
   MOBILE BUILDER UI
   ============================================================ */
.mobile-shelf-toggle {
    display: none;
    position: fixed; bottom: 80px; right: 20px; z-index: 300;
    width: 52px; height: 52px; border-radius: 50%;
    background: var(--sb-cyan); color: #060e1c;
    border: none; cursor: pointer; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(0,212,255,.4);
    transition: transform var(--transition);
}
.mobile-shelf-toggle:hover { transform: scale(1.08); }

.mobile-shelf-overlay {
    position: fixed; inset: 0; z-index: 400;
    background: rgba(0,0,0,.5); -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
}
.mobile-shelf-overlay[hidden] { display: none; }
.mobile-shelf-panel {
    position: absolute; bottom: 0; left: 0; right: 0;
    background: var(--sb-surface); border-top: 1px solid var(--sb-border);
    border-radius: 16px 16px 0 0;
    max-height: 70vh; display: flex; flex-direction: column;
}
.mobile-shelf-head {
    padding: 14px 16px; display: flex; align-items: center;
    justify-content: space-between; border-bottom: 1px solid var(--sb-border);
    font-size: 14px; font-weight: 600; flex-shrink: 0;
}
.mobile-shelf-head button {
    width: 28px; height: 28px; background: var(--sb-card);
    border: 1px solid var(--sb-border); border-radius: 5px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--sb-dim);
}
.mobile-shelf-list { overflow-y: auto; padding: 8px; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.mobile-shelf-list .shelf-block { margin: 0; }

/* ---- FONT SELECTOR ---- */
.prop-font-opts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5px;
}
.prop-font-btn {
    padding: 7px 6px; border-radius: var(--radius-sm);
    font-size: 11.5px; font-weight: 500;
    border: 1px solid var(--sb-border); background: var(--sb-card);
    color: var(--sb-dim); cursor: pointer; transition: var(--transition);
    text-align: center; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.prop-font-btn:hover { border-color: var(--sb-dim); color: var(--sb-text); }
.prop-font-btn.active { border-color: var(--sb-cyan); background: var(--sb-cyan-dim); color: var(--sb-cyan); }

.prop-apply-all {
    width: 100%; margin-top: 8px;
    padding: 6px 8px; border-radius: var(--radius-sm);
    font-size: 11px; font-weight: 600; letter-spacing: 0.02em;
    border: 1px dashed var(--sb-border); background: transparent;
    color: var(--sb-dim); cursor: pointer; transition: var(--transition);
    text-align: center;
}
.prop-apply-all:hover { border-color: var(--sb-cyan); color: var(--sb-cyan); background: var(--sb-cyan-glow); }

.prop-auto-btn {
    padding: 4px 8px; border-radius: var(--radius-sm);
    font-size: 10.5px; font-weight: 600;
    border: 1px solid var(--sb-border); background: transparent;
    color: var(--sb-dim); cursor: pointer; transition: var(--transition);
    white-space: nowrap;
}
.prop-auto-btn:hover { border-color: var(--sb-cyan); color: var(--sb-cyan); }

/* ============================================================
   MOBILE BUILDER UI
   ============================================================ */
.mobile-shelf-toggle { display: none; }
.mobile-tab-bar      { display: none; }

@media (max-width: 900px) {
    :root { --shelf-w: 0px; --props-w: 0px; }
    .bldr-shelf       { display: none; }
    .bldr-toolbar-mid { display: none; }
    .bldr-ctrl-label  { display: none; }

    /* Props panel becomes a bottom sheet */
    .bldr-props {
        display: flex !important;
        position: fixed;
        bottom: 58px; left: 0; right: 0;
        width: 100%;
        max-height: 72vh;
        border-left: none;
        border-top: 1px solid var(--sb-border);
        border-radius: 14px 14px 0 0;
        transform: translateY(110%);
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 350;
        overflow: hidden;
        flex-direction: column;
        box-shadow: 0 -8px 40px rgba(0,0,0,.5);
    }
    .bldr-props.mobile-open { transform: translateY(0); }

    /* Drag handle at top of sheet */
    .bldr-props::before {
        content: '';
        display: block;
        width: 36px; height: 4px;
        background: var(--sb-border);
        border-radius: 2px;
        margin: 10px auto 0;
        flex-shrink: 0;
    }

    /* Backdrop — stops at the tab bar so the bar stays tappable */
    .mobile-props-backdrop {
        position: fixed; top: 0; left: 0; right: 0; bottom: 58px;
        background: rgba(0,0,0,.55);
        z-index: 340;
        -webkit-backdrop-filter: blur(2px);
        backdrop-filter: blur(2px);
    }
    .mobile-props-backdrop[hidden] { display: none; }

    /* Bottom tab bar — always on top so tabs are never blocked */
    .mobile-tab-bar {
        display: flex;
        position: fixed;
        bottom: 0; left: 0; right: 0;
        height: 58px;
        background: var(--sb-surface);
        border-top: 1px solid var(--sb-border);
        z-index: 360;
        padding-bottom: env(safe-area-inset-bottom, 0);
    }
    .mtab {
        flex: 1; position: relative;
        display: flex; flex-direction: column;
        align-items: center; justify-content: center;
        gap: 3px;
        background: transparent; border: none;
        color: var(--sb-dim); font-size: 9px; font-weight: 700;
        cursor: pointer; letter-spacing: 0.04em; text-transform: uppercase;
        transition: color var(--transition);
    }
    .mtab:hover  { color: var(--sb-text); }
    .mtab.active { color: var(--sb-cyan); }
    .mtab.selection-ready { color: var(--sb-cyan); }
    .mtab.selection-ready::after {
        content: '';
        position: absolute;
        top: 7px;
        width: 6px; height: 6px;
        background: var(--sb-cyan);
        border-radius: 50%;
        box-shadow: 0 0 6px var(--sb-cyan);
        animation: tab-dot-pulse 1.4s ease-in-out infinite;
    }
    @keyframes tab-dot-pulse {
        0%, 100% { opacity: 1; transform: scale(1); }
        50%       { opacity: 0.4; transform: scale(0.65); }
    }

    /* Canvas extra padding so last block isn't behind the tab bar */
    .bldr-canvas-scroll { padding-bottom: 80px; }
}

@media (max-width: 640px) {
    .bldr-toolbar { padding: 0 10px; gap: 6px; }
    .bldr-tbtn { padding: 0 8px; font-size: 11.5px; }
    .bldr-canvas-scroll { padding: 12px 8px 80px; }
}