/* ═══════════════════════════════════════════════
   SportSlime Kit Builder — Design System
   Brand: #00BFA5 teal on black
   ═══════════════════════════════════════════════ */

:root {
    /* ── Brand ── */
    --kb-primary:       #00BFA5;
    --kb-primary-hover: #00a896;
    --kb-primary-dark:  #008c76;
    --kb-primary-glow:  rgba(0, 191, 165, 0.35);

    /* ── Status ── */
    --kb-success: #10b981;
    --kb-danger:  #ef4444;
    --kb-warning: #f59e0b;
    --kb-info:    #38bdf8;

    /* ── Backgrounds ── */
    --kb-bg:        #000000;
    --kb-surface-1: #0d0d0d;
    --kb-surface-2: #141414;
    --kb-surface-3: #1a1a1a;
    --kb-surface-4: #222222;

    /* Legacy aliases (used in JS) */
    --kb-bg-2: #0d0d0d;
    --kb-bg-3: #141414;
    --kb-bg-4: #1a1a1a;

    /* ── Glass / borders ── */
    --kb-glass:        rgba(0, 191, 165, 0.04);
    --kb-glass-hover:  rgba(0, 191, 165, 0.10);
    --kb-border:       rgba(255, 255, 255, 0.07);
    --kb-border-hover: rgba(0, 191, 165, 0.40);

    /* ── Text ── */
    --kb-text:      #ffffff;
    --kb-text-dim:  rgba(255, 255, 255, 0.55);
    --kb-text-muted:rgba(255, 255, 255, 0.30);

    /* ── Layout ── */
    --sidebar-nav-w:   68px;
    --sidebar-panel-w: 320px;
    --topbar-h:        56px;

    /* ── Fonts ── */
    --kb-font-main:  'Inter', sans-serif;
    --kb-font-title: 'Outfit', sans-serif;
    --kb-font-sport: 'Rajdhani', sans-serif;
}

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

html, body {
    height: 100%;
    font-family: var(--kb-font-main);
    background: var(--kb-bg);
    color: var(--kb-text);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--kb-font-title); }
a { color: var(--kb-primary); text-decoration: none; }

/* ══ LOADING SCREEN ══════════════════════════════ */
#kb-loading {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--kb-bg);
}

.kb-loading-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.ss-logo-mark {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 191, 165, 0.08);
    border: 1px solid rgba(0, 191, 165, 0.25);
    border-radius: 18px;
}

.ss-brand-name {
    font-family: var(--kb-font-title);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--kb-primary);
    text-transform: uppercase;
}

.kb-loader-ring {
    width: 40px;
    height: 40px;
    border: 3px solid var(--kb-border);
    border-top-color: var(--kb-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.kb-loader-ring.small { width: 24px; height: 24px; border-width: 2px; }

#kb-loading p {
    color: var(--kb-text-dim);
    font-size: 0.8rem;
    letter-spacing: 0.06em;
}

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

/* ══ APP SHELL ═══════════════════════════════════ */
#kb-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* ══ TOPBAR ══════════════════════════════════════ */
.kb-topbar {
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 1rem;
    background: var(--kb-surface-1);
    border-bottom: 1px solid var(--kb-border);
    z-index: 100;
    flex-shrink: 0;
}

.kb-topbar-left  { display: flex; align-items: center; gap: 1rem; flex: 1; min-width: 0; }
.kb-topbar-center { display: flex; align-items: center; }
.kb-topbar-right  { display: flex; align-items: center; gap: 6px; }

.kb-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.kb-logo-text {
    font-family: var(--kb-font-title);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    color: var(--kb-primary);
    text-transform: uppercase;
}

/* Active part badge */
.kb-active-part {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(0, 191, 165, 0.08);
    border: 1px solid rgba(0, 191, 165, 0.25);
    padding: 5px 12px;
    border-radius: 99px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--kb-primary);
}

.kb-ap-dot {
    width: 6px;
    height: 6px;
    background: var(--kb-primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--kb-primary-glow);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* View tabs */
.kb-view-tabs {
    display: flex;
    gap: 3px;
    background: var(--kb-surface-2);
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    padding: 3px;
}

.kb-view-tab {
    padding: 5px 14px;
    border: none;
    background: transparent;
    color: var(--kb-text-dim);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s;
}

.kb-view-tab:hover { background: var(--kb-glass-hover); color: var(--kb-text); }
.kb-view-tab.active { background: var(--kb-primary); color: #000; font-weight: 700; }

/* Tool buttons */
.kb-tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 11px;
    border: 1px solid var(--kb-border);
    border-radius: 7px;
    background: var(--kb-glass);
    color: var(--kb-text-dim);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s;
    white-space: nowrap;
}

.kb-tool-btn:hover { background: var(--kb-glass-hover); border-color: var(--kb-border-hover); color: var(--kb-text); }
.kb-tool-btn.active { border-color: var(--kb-primary); color: var(--kb-primary); background: var(--kb-glass); }
.kb-undo-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    background: var(--kb-primary);
    color: #000;
    font-size: 0.65rem;
    font-weight: 800;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    line-height: 1;
}
.kb-tool-success { border-color: rgba(16,185,129,0.4); color: var(--kb-success); }
.kb-tool-danger  { border-color: rgba(239,68,68,0.3); color: var(--kb-danger); }

/* ══ MAIN LAYOUT ═════════════════════════════════ */
.kb-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

/* ══ SIDEBAR NAV ═════════════════════════════════ */
.kb-sidebar-nav {
    width: var(--sidebar-nav-w);
    background: var(--kb-surface-1);
    border-right: 1px solid var(--kb-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 0;
    gap: 4px;
    flex-shrink: 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.kb-nav-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: 52px;
    padding: 0.55rem 0;
    border: none;
    background: transparent;
    color: var(--kb-text-muted);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.18s;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.kb-nav-tab:hover { background: var(--kb-glass-hover); color: var(--kb-text); }
.kb-nav-tab.active { background: var(--kb-glass); color: var(--kb-primary); }
.kb-nav-tab.active svg { stroke: var(--kb-primary); }

/* ══ SIDEBAR PANEL ═══════════════════════════════ */
.kb-sidebar-panel {
    width: var(--sidebar-panel-w);
    background: var(--kb-surface-1);
    border-right: 1px solid var(--kb-border);
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
}

.kb-sidebar-panel::-webkit-scrollbar { width: 4px; }
.kb-sidebar-panel::-webkit-scrollbar-track { background: transparent; }
.kb-sidebar-panel::-webkit-scrollbar-thumb { background: var(--kb-border); border-radius: 99px; }
.kb-sidebar-panel::-webkit-scrollbar-thumb:hover { background: var(--kb-primary-dark); }

.kb-tab-content { display: none; }
.kb-tab-content.active { display: block; }

.kb-panel-header {
    padding: 1.25rem 1rem 0.75rem;
    border-bottom: 1px solid var(--kb-border);
}

.kb-panel-header h3 {
    font-family: var(--kb-font-title);
    font-size: 1rem;
    font-weight: 700;
    color: var(--kb-text);
    margin-bottom: 3px;
}

.kb-panel-header p {
    font-size: 0.72rem;
    color: var(--kb-text-dim);
}

.kb-panel-section {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--kb-border);
}

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

.kb-section-title {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--kb-text-dim);
    margin-bottom: 0.6rem;
}

/* ══ FORM ELEMENTS ═══════════════════════════════ */
.kb-input, .kb-select {
    width: 100%;
    padding: 8px 12px;
    background: var(--kb-surface-3);
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    color: var(--kb-text);
    font-size: 0.82rem;
    font-family: var(--kb-font-main);
    outline: none;
    transition: border-color 0.18s;
}

.kb-input:focus, .kb-select:focus {
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 2px rgba(0, 191, 165, 0.15);
}

.kb-input::placeholder { color: var(--kb-text-muted); }
.kb-select { cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

.kb-select option { background: var(--kb-surface-2); }
.kb-input-micro { width: 52px; text-align: center; padding: 4px 6px; font-size: 0.72rem; }
.kb-input-sm { padding: 6px 10px; font-size: 0.78rem; }

.kb-form-group { margin-bottom: 0.65rem; }
.kb-form-group:last-child { margin-bottom: 0; }
.kb-label { display: block; font-size: 0.72rem; font-weight: 600; color: var(--kb-text-dim); margin-bottom: 5px; }

.kb-product-search-wrap input { margin-bottom: 0; }

/* ══ BUTTONS ═════════════════════════════════════ */
.kb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 16px;
    border: none;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--kb-font-main);
    cursor: pointer;
    transition: all 0.18s;
    text-decoration: none;
}

.kb-btn-primary {
    background: var(--kb-primary);
    color: #000;
}
.kb-btn-primary:hover {
    background: var(--kb-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--kb-primary-glow);
}
.kb-btn-primary:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.kb-btn-outline {
    background: transparent;
    border: 1px solid var(--kb-primary);
    color: var(--kb-primary);
}
.kb-btn-outline:hover { background: var(--kb-primary); color: #000; }

.kb-btn-ghost {
    background: var(--kb-glass);
    border: 1px solid var(--kb-border);
    color: var(--kb-text-dim);
}
.kb-btn-ghost:hover { background: var(--kb-glass-hover); border-color: var(--kb-border-hover); color: var(--kb-text); }

.kb-btn-danger {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--kb-danger);
}
.kb-btn-danger:hover { background: rgba(239, 68, 68, 0.22); }

.kb-btn-sm { padding: 5px 12px; font-size: 0.75rem; }
.kb-btn-xs { padding: 3px 9px; font-size: 0.7rem; border-radius: 6px; }

/* ══ FILL TABS / PLACEMENT TABS ══════════════════ */
.kb-fill-type-tabs, .kb-placement-tabs {
    display: flex;
    gap: 4px;
    background: var(--kb-surface-2);
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    padding: 3px;
}

.kb-fill-tab, .kb-place-tab {
    flex: 1;
    padding: 6px 4px;
    border: none;
    background: transparent;
    color: var(--kb-text-dim);
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s;
    text-align: center;
}

.kb-fill-tab:hover, .kb-place-tab:hover { color: var(--kb-text); background: var(--kb-glass); }
.kb-fill-tab.active, .kb-place-tab.active { background: var(--kb-primary); color: #000; }

/* ══ PRODUCT GRID ════════════════════════════════ */
.kb-product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 10px;
}

.kb-product-card {
    background: var(--kb-surface-2);
    border: 1px solid var(--kb-border);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.kb-product-card:hover { border-color: var(--kb-border-hover); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0, 191, 165, 0.12); }
.kb-product-card.active { border-color: var(--kb-primary); box-shadow: 0 0 0 2px rgba(0, 191, 165, 0.25); }

.kb-product-thumb {
    width: 100%;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--kb-surface-3);
    color: var(--kb-text-dim);
}

.kb-product-thumb svg { width: 36px; height: 36px; opacity: 0.3; }

.kb-product-cat-badge {
    position: absolute;
    top: 6px;
    left: 6px;
    background: rgba(0, 191, 165, 0.15);
    border: 1px solid rgba(0, 191, 165, 0.3);
    color: var(--kb-primary);
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.05em;
}

.kb-product-name-label {
    padding: 6px 8px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--kb-text);
    background: var(--kb-surface-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ══ COLOUR TAB ══════════════════════════════════ */
.kb-swatch-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 0.6rem;
}

.kb-swatch {
    width: 24px;
    height: 24px;
    border-radius: 5px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.15s;
}

.kb-swatch:hover { transform: scale(1.2); border-color: rgba(255,255,255,0.4); }
.kb-swatch.active { border-color: var(--kb-primary); box-shadow: 0 0 0 2px rgba(0,191,165,0.4); }

.kb-color-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.kb-color-input-row input[type="color"] {
    width: 36px;
    height: 36px;
    border: 1px solid var(--kb-border);
    border-radius: 7px;
    padding: 2px;
    cursor: pointer;
    background: var(--kb-surface-3);
    flex-shrink: 0;
}

.kb-color-input-row input[type="color"]:focus {
    outline: none;
    border-color: var(--kb-primary);
}

.kb-gradient-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
}

.kb-grad-stop { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.kb-grad-stop label { font-size: 0.65rem; color: var(--kb-text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.kb-grad-arrow { color: var(--kb-text-muted); font-size: 1.2rem; }

.kb-grad-dir-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5px;
}

.kb-grad-dir {
    padding: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    background: var(--kb-glass);
    border: 1px solid var(--kb-border);
    border-radius: 6px;
    color: var(--kb-text-dim);
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
}

.kb-grad-dir:hover { border-color: var(--kb-border-hover); color: var(--kb-text); }
.kb-grad-dir.active { border-color: var(--kb-primary); color: var(--kb-primary); background: rgba(0,191,165,0.08); }

.kb-palette-presets { display: flex; flex-direction: column; gap: 6px; }

.kb-palette-preset {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--kb-glass);
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s;
}

.kb-palette-preset:hover { border-color: var(--kb-border-hover); background: var(--kb-glass-hover); }
.kb-pal-dot { width: 14px; height: 14px; border-radius: 3px; }
.kb-pal-name { font-size: 0.72rem; color: var(--kb-text-dim); margin-left: 2px; }

/* ══ SLIDERS / CONTROL ROWS ══════════════════════ */
.kb-control-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
}

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

.kb-control-row label {
    font-size: 0.67rem;
    color: var(--kb-text-dim);
    width: 44px;
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.kb-control-row input[type="range"] {
    flex: 1;
    height: 4px;
    border-radius: 99px;
    cursor: pointer;
    accent-color: var(--kb-primary);
    background: var(--kb-surface-3);
    border: none;
}

.kb-control-row span {
    font-size: 0.7rem;
    color: var(--kb-text-dim);
    min-width: 34px;
    text-align: right;
}

/* Center button */
.kb-btn-center {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--kb-border);
    background: var(--kb-glass);
    border-radius: 5px;
    cursor: pointer;
    color: var(--kb-text-dim);
    transition: all 0.15s;
    padding: 0;
}

.kb-btn-center svg { width: 12px; height: 12px; }
.kb-btn-center:hover { border-color: var(--kb-primary); color: var(--kb-primary); }

/* ══ PATTERNS TAB ════════════════════════════════ */
.kb-pattern-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5px;
}

.kb-pattern-btn {
    padding: 8px 6px;
    border: 1px solid var(--kb-border);
    background: var(--kb-glass);
    color: var(--kb-text-dim);
    border-radius: 7px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
}

.kb-pattern-btn:hover { border-color: var(--kb-border-hover); color: var(--kb-text); }
.kb-pattern-btn.active { border-color: var(--kb-primary); color: var(--kb-primary); background: rgba(0,191,165,0.08); }

/* ══ TEXT TAB ════════════════════════════════════ */
.kb-text-style-btns { display: flex; gap: 5px; }

.kb-style-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--kb-border);
    background: var(--kb-glass);
    color: var(--kb-text-dim);
    border-radius: 7px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kb-style-btn:hover { border-color: var(--kb-border-hover); color: var(--kb-text); }
.kb-style-btn.active { border-color: var(--kb-primary); color: var(--kb-primary); background: rgba(0,191,165,0.08); }

.kb-text-presets { display: flex; gap: 4px; flex-wrap: wrap; }

/* ══ LOGOS TAB ═══════════════════════════════════ */
.kb-upload-zone {
    border: 2px dashed var(--kb-border);
    border-radius: 10px;
    padding: 1.5rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--kb-text-dim);
}

.kb-upload-zone:hover, .kb-upload-zone.drag-over {
    border-color: var(--kb-primary);
    background: rgba(0, 191, 165, 0.04);
    color: var(--kb-primary);
}

.kb-upload-zone svg { margin-bottom: 0.5rem; opacity: 0.5; }
.kb-upload-zone p { font-size: 0.8rem; margin-bottom: 0.25rem; }
.kb-upload-zone span { color: var(--kb-primary); font-weight: 600; }
.kb-upload-zone small { font-size: 0.68rem; color: var(--kb-text-muted); }

.kb-logo-preview-container {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--kb-surface-3);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 0.75rem;
    border: 1px solid var(--kb-border);
}

.kb-logo-preview-container img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* Sponsor slots */
.kb-sponsor-slots { display: flex; flex-direction: column; gap: 6px; }

.kb-sponsor-slot {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: var(--kb-glass);
    border: 1px solid var(--kb-border);
    border-radius: 8px;
}

.kb-sponsor-slot-thumb {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    background: var(--kb-surface-3);
    border: 1px solid var(--kb-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--kb-text-muted);
    overflow: hidden;
    flex-shrink: 0;
}

/* ══ ORDER TAB ═══════════════════════════════════ */
.kb-squad-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}

.kb-squad-table th {
    padding: 6px 4px;
    text-align: left;
    color: var(--kb-text-dim);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--kb-border);
}

.kb-squad-table td {
    padding: 5px 4px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.kb-squad-table tr:last-child td { border-bottom: none; }

.kb-size-summary { display: flex; flex-wrap: wrap; gap: 5px; }

.kb-size-chip {
    background: rgba(0, 191, 165, 0.1);
    border: 1px solid rgba(0, 191, 165, 0.25);
    color: var(--kb-primary);
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
}

.kb-receipt-lines { display: flex; flex-direction: column; gap: 5px; }

.kb-receipt-line {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--kb-text-dim);
    padding: 4px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.kb-receipt-total {
    display: flex;
    justify-content: space-between;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--kb-primary);
    padding-top: 8px;
    margin-top: 4px;
    border-top: 1px solid var(--kb-border);
}

.kb-badge-accent {
    background: rgba(0, 191, 165, 0.12);
    border: 1px solid rgba(0, 191, 165, 0.25);
    color: var(--kb-primary);
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 0.68rem;
    font-weight: 700;
}

/* ══ EXPORT TAB ══════════════════════════════════ */
#export-preview-container {
    border-radius: 8px;
    overflow: hidden;
    background: #0d0d0d;
    margin-bottom: 0;
}

.kb-summary-list { display: flex; flex-direction: column; gap: 4px; }

.kb-summary-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.75rem;
    color: var(--kb-text-dim);
}

.kb-sum-dot {
    width: 6px;
    height: 6px;
    background: var(--kb-primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.kb-empty-summary {
    color: var(--kb-text-muted);
    font-size: 0.75rem;
    text-align: center;
    padding: 12px 0;
}

/* ══ VIEWPORT ════════════════════════════════════ */
.kb-viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--kb-bg);
    min-width: 0;
}

#kb-canvas-container {
    width: 100%;
    height: 100%;
    position: relative;
}

#three-canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

#kb-no-model {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--kb-text-muted);
    z-index: 10;
    pointer-events: none;
}

#kb-no-model svg { opacity: 0.15; }
#kb-no-model p { font-size: 0.9rem; font-weight: 600; }
#kb-no-model small { font-size: 0.75rem; }

#kb-overlay-loading {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    z-index: 20;
    backdrop-filter: blur(2px);
}

#kb-overlay-loading span {
    font-size: 0.8rem;
    color: var(--kb-primary);
    font-weight: 600;
}

/* Viewport controls */
.kb-viewport-controls {
    position: absolute;
    bottom: 16px;
    right: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 10;
}

.kb-vp-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--kb-border);
    border-radius: 7px;
    background: rgba(0,0,0,0.7);
    color: var(--kb-text-dim);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    backdrop-filter: blur(4px);
}

.kb-vp-btn:hover { background: rgba(0,191,165,0.15); border-color: var(--kb-primary); color: var(--kb-primary); }
.kb-vp-btn.active { background: rgba(0,191,165,0.2); border-color: var(--kb-primary); color: var(--kb-primary); }

/* ══ GIZMO ═══════════════════════════════════════ */
.kb-gizmo {
    position: absolute;
    border: 1.5px solid var(--kb-primary);
    border-radius: 6px;
    pointer-events: auto;
    display: none;
    z-index: 50;
}

.kb-gizmo-handle {
    position: absolute;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--kb-bg);
    border: 1.5px solid var(--kb-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--kb-primary);
    transition: all 0.15s;
}

.kb-gizmo-handle svg { width: 12px; height: 12px; }
.kb-gizmo-handle:hover { background: var(--kb-primary); color: #000; }

.kb-gizmo-rotate  { top: -14px; right: -14px; }
.kb-gizmo-resize  { bottom: -14px; right: -14px; }
.kb-gizmo-delete  { top: -14px; left: -14px; border-color: var(--kb-danger); color: var(--kb-danger); }
.kb-gizmo-delete:hover { background: var(--kb-danger); color: #fff; }

.kb-gizmo-label {
    position: absolute;
    top: 120%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.55rem;
    color: var(--kb-text-muted);
    white-space: nowrap;
    pointer-events: none;
}

/* ══ TOAST ═══════════════════════════════════════ */
.kb-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--kb-surface-3);
    border: 1px solid var(--kb-border);
    color: var(--kb-text);
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.25s, transform 0.25s;
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.kb-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.kb-toast.success { border-color: rgba(16,185,129,0.5); background: rgba(16,185,129,0.12); color: #10b981; }
.kb-toast.error   { border-color: rgba(239,68,68,0.5); background: rgba(239,68,68,0.12); color: #ef4444; }
.kb-toast.info    { border-color: rgba(0,191,165,0.4); background: rgba(0,191,165,0.08); color: var(--kb-primary); }

/* ══ MOBILE ══════════════════════════════════════ */
@media (max-width: 768px) {
    :root {
        --topbar-h: 50px;
        --mobile-nav-h: 62px;
    }

    /* ── Topbar ── */
    .kb-topbar { padding: 0 0.75rem; gap: 0.5rem; }
    .kb-logo-text { display: none; }
    .kb-active-part { display: none !important; }
    .kb-tool-btn span { display: none; }
    .kb-tool-btn { padding: 6px 9px; min-width: 34px; justify-content: center; }
    /* Hide Reset on mobile — destructive, panel is more compact */
    #btn-reset { display: none; }

    /* ── Main layout ── */
    .kb-main {
        position: relative;
        overflow: visible;
    }

    /* ── Sidebar nav → sticky bottom tab bar ── */
    .kb-sidebar-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: var(--mobile-nav-h);
        flex-direction: row;
        justify-content: space-around;
        padding: 0 4px;
        gap: 0;
        border-right: none;
        border-top: 1px solid var(--kb-border);
        z-index: 200;
        overflow: visible;
        flex-shrink: 0;
    }

    .kb-nav-tab {
        flex: 1;
        width: auto;
        flex-direction: column;
        gap: 2px;
        padding: 0.5rem 0 0.4rem;
        font-size: 0.56rem;
        border-radius: 0;
    }

    .kb-nav-tab span { display: block; }
    .kb-nav-tab svg { width: 20px; height: 20px; }

    /* ── Sidebar panel → bottom sheet ── */
    .kb-sidebar-panel {
        position: fixed;
        bottom: var(--mobile-nav-h);
        left: 0;
        right: 0;
        width: 100%;
        max-height: 68vh;
        min-height: 0;
        border-right: none;
        border-top: 1px solid var(--kb-border);
        border-radius: 18px 18px 0 0;
        transform: translateY(calc(100% + var(--mobile-nav-h)));
        transition: transform 0.33s cubic-bezier(0.32, 0.72, 0, 1);
        z-index: 180;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .kb-sidebar-panel.mobile-open {
        transform: translateY(0);
    }

    /* Drag handle pill */
    .kb-sidebar-panel::before {
        content: '';
        display: block;
        width: 40px;
        height: 4px;
        background: var(--kb-border);
        border-radius: 99px;
        margin: 10px auto 2px;
    }

    /* ── Mobile backdrop ── */
    .kb-mobile-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        bottom: var(--mobile-nav-h);
        background: rgba(0, 0, 0, 0.55);
        z-index: 170;
        backdrop-filter: blur(2px);
        -webkit-backdrop-filter: blur(2px);
    }

    .kb-mobile-backdrop.visible {
        display: block;
    }

    /* ── Viewport: full width, pad bottom for nav bar ── */
    .kb-viewport {
        width: 100%;
        height: calc(100vh - var(--topbar-h));
        padding-bottom: var(--mobile-nav-h);
    }

    /* ── Compact product grid ── */
    .kb-product-grid { grid-template-columns: 1fr 1fr; gap: 6px; padding: 8px; }
    .kb-product-thumb { height: 75px; }

    /* ── Placement tabs: scrollable on narrow screens ── */
    .kb-placement-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    .kb-place-tab { flex: none; white-space: nowrap; }

    /* ── Control rows: slightly taller touch targets ── */
    .kb-control-row input[type="range"] { height: 6px; }

    /* ── Panel sections get a bit more breathing room ── */
    .kb-panel-header { padding: 0.75rem 1rem 0.65rem; }
    .kb-panel-section { padding: 0.75rem 1rem; }
}

/* ── Extra small (≤ 480px): streamline topbar further ── */
@media (max-width: 480px) {
    .kb-topbar-center {
        /* Shrink view tabs so they fit */
    }
    .kb-view-tab { padding: 5px 10px; font-size: 0.7rem; }

    /* Larger touch target for nav tabs */
    .kb-nav-tab svg { width: 22px; height: 22px; }

    .kb-panel-header h3 { font-size: 0.9rem; }
}