* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: #0a0a0a;
    color: #f0f0f0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 24px;
    gap: 24px;
    overflow: hidden;
}

.main-container {
    display: flex;
    flex: 1;
    gap: 24px;
    height: calc(100vh - 180px);
}

/* Viewport Area */
.viewport {
    flex: 1;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    background-color: #f0f0f0;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.viewport-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 10;
    pointer-events: none;
}

/* Area label buttons floating over the room image */
#areaLabelOverlay {
    position: absolute;
    inset: 0;
    z-index: 11;
    pointer-events: none;
}

.area-label-btn {
    position: absolute;
    transform: translate(-50%, -50%);
    pointer-events: all;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    color: #000;
    border: 1.5px solid rgba(17, 17, 17, 0.14);
    border-radius: 999px;
    padding: 7px 18px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.7px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.13);
    transition: background 0.18s, color 0.18s, border-color 0.18s, box-shadow 0.18s, transform 0.18s;
    white-space: nowrap;
    text-transform: uppercase;
    user-select: none;
}

.area-label-btn:hover {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
    transform: translate(-50%, -50%) scale(1.05);
}

.area-label-btn.active {
    background: #111;
    color: #fff;
    border-color: #f0f0f0;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.28);
}


/* Left Controls (Overlay on the image) */
.view-point-switch {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    gap: 8px;
    z-index: 2;
}

.view-point-btn {
    border: 1px solid rgba(17, 17, 17, 0.12);
    background: rgba(255, 255, 255, 0.92);
    color: #f0f0f0;
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.view-point-btn.active {
    background: #111;
    color: #fff;
    border-color: #f0f0f0;
}

.left-controls {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 140px;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.1), transparent);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
}

.back-btn {
    background: #1a1a1a;
    color: #fff;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    font-size: 20px;
    transition: background 0.2s;
}

.back-btn:hover {
    background: #333;
}

.mode-toggle {
    display: flex;
    background: #111111;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mode-toggle button {
    flex: 1;
    border: none;
    background: none;
    padding: 12px 0;
    font-size: 11px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.5px;
}

.mode-toggle button.active {
    background: #f8f9fa;
    color: #f0f0f0;
}

/* Right Sidebar */
.sidebar {
    width: 340px;
    background: #111111;
    border: 1px solid #2a2a2a;
    border-radius: 16px;
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
    overflow-y: auto;
}

.control-group {
    display: flex;
    background: #161616;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    border-radius: 10px;
    padding: 4px;
}

.control-group a {
    flex: 1;
    border: none;
    background: #111;
    text-align: center;
    padding: 10px 8px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.5px;
    text-decoration: none;
}

.control-group a.active {
    background: #ffffff;
    color: #000000;
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
    font-weight: 700;
}

.control-apply {
    display: flex;
    background: #161616;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    border-radius: 10px;
    padding: 10px;
    gap: 10px;
}

.control-apply label {
    width: 100%;
    color: #aaaaaa;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    text-transform: uppercase;
}

.btn-full {
    width: 100%;
    border: none;
    background: #161616;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    padding: 16px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    color: #f0f0f0;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.5px;
}

.btn-full:hover {
    background: #1e1e1e;
}

.grout-select {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: #161616;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    color: #f0f0f0;
    letter-spacing: 0.5px;
}

/* ── Random Faces Control ───────────────────────────────────── */
.random-faces-control {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: #161616;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    color: #f0f0f0;
    letter-spacing: 0.5px;
}

.random-faces-control .rfc-label {
    white-space: nowrap;
}

.random-faces-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.random-faces-row input[type="number"] {
    width: 52px;
    padding: 5px 8px;
    border: 1.5px solid #d1d5db;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    background: #111111;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    outline: none;
    transition: border-color 0.15s;
}

.random-faces-row input[type="number"]:focus {
    border-color: #f0f0f0;
}

.rf-available {
    font-size: 10px;
    color: #6b7280;
    white-space: nowrap;
}


.grout-sizes {
    align-items: flex-start;
    gap: 12px;
}

.grout-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.grout-col span {
    font-size: 10px;
    color: #aaaaaa;
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 0;
}

.grout-col input[type="number"] {
    width: 100%;
    padding: 8px;
    text-align: center;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    background: #111111;
    border: 1px solid #2a2a2a;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    color: #f0f0f0;
    transition: border-color 0.2s;
}

.grout-col input[type="number"]:focus {
    outline: none;
    border-color: #222;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.grout-select input[type="color"],
.pickr .pcr-button {
    border: 1px solid #FFF !important;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: transparent;
    padding: 0;
}

.grout-select input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.grout-select input[type="color"]::-webkit-color-swatch {
    border: 2px solid #e5e7eb;
    border-radius: 6px;
}

.upload-btn-new {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px;
    background: #ffffff;
    color: #000000;
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.upload-btn-new:hover {
    background: #e0e0e0;
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.3);
    transform: translateY(-1px);
}

.render-btn {
    background: #ffffff;
    color: #000000;
    border: none;
    padding: 18px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    margin-top: auto;
    transition: background 0.2s;
    letter-spacing: 1px;
}

.render-btn:hover {
    background: #e0e0e0;
}

/* Dropzone Area */
.dropzone {
    background: #111;
    /* matching the dark pinkish red in screenshot */
    border-radius: 16px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 12px;
    flex-shrink: 0;
    transition: background 0.3s;
}

.dropzone.dragover {
    background: #333;
}

.dropzone-inner {
    border: 2px dashed rgba(255, 255, 255, 0.4);
    border-radius: 12px;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-align: center;
}

.dropzone-inner span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.select-btn {
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.select-btn:hover {
    background: rgba(255, 255, 255, 0.22);
}

/* Tile Selection (hidden by default) */
.tiles-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 5px;
    margin-bottom: 5px;
}

.tile-thumb {
    width: 65px;
    height: 65px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, border-color 0.2s;
}

.tile-thumb:hover {
    transform: scale(1.05);
    border-color: #f0f0f0;
}

.tile-thumb.selected {
    border-color: #f0f0f0;
    border-width: 3px;
}

/* Canvas overlay for tile rendering */
.tile-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    /* z-index: 1; */
}

#wallCanvas {
    z-index: 10;
}

#floorCanvas {
    z-index: 1;
}

/* Uploaded tile thumbnails */
.uploaded-tiles {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.uploaded-tiles .tile-item {
    width: 70px;
    height: 82px;
    /* taller to fit the name label below */
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.uploaded-tiles .tile-item:hover {
    transform: scale(1.05);
    border-color: #999;
}

.uploaded-tiles .tile-item.selected {
    border-color: #f0f0f0;
    border-width: 3px;
}

.uploaded-tiles .tile-item img {
    width: 100%;
    height: 60px;
    object-fit: cover;
    flex-shrink: 0;
}

/* Face count badge (top-right corner of thumbnail) */
.tile-face-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: rgba(176, 58, 91, 0.9);
    color: #fff;
    font-size: 8px;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 4px;
    line-height: 1.4;
    pointer-events: none;
    white-space: nowrap;
}

/* Model name below thumbnail */
.tile-name-label {
    display: block;
    width: 100%;
    text-align: center;
    font-size: 8px;
    color: var(--text-muted, #aaa);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding: 2px 2px 0;
    line-height: 1.3;
}

/* Area indicator on WALL/FLOOR buttons */
#areaToggle button.active {
    background: #111111;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    box-shadow: 0 2px 8px rgba(176, 58, 91, 0.15);
    font-weight: 700;
}

#groutColorPicker {
    width: 40px;
    height: 40px;
    border: none;
    cursor: pointer;
    background: none;
}

select.btn-full {
    appearance: none;
    width: 100%;
    border: none;
    outline: none;
}

.download-btn {
    background: #ffffff;
    color: #000000;
    border: none;
    padding: 18px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    letter-spacing: 1px;
    text-align: center;
}

.download-btn:hover {
    background: #e0e0e0;
}

/* Room Selector Overlay UI */
.room-selector-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
    gap: 12px;
    z-index: 20;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.room-thumb-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
    background: #111111;
    border: 1px solid #2a2a2a;
    border: 2px solid transparent;
    transition: all 0.25s ease;
    width: 70px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.room-thumb-btn img {
    width: 70px;
    height: 48px;
    object-fit: cover;
    transition: transform 0.2s;
}

.room-thumb-btn span {
    font-size: 9px;
    font-weight: 700;
    padding: 4px 0;
    color: #444;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.room-thumb-btn:hover {
    transform: translateY(-2px);
    border-color: #bbb;
}

.room-thumb-btn.active {
    border-color: #f0f0f0;
    box-shadow: 0 4px 12px rgba(176, 58, 91, 0.3);
}

.room-thumb-btn.active img {
    transform: scale(1.05);
}



/* ── New main-page controls (layout & rotation selects) ── */
select.btn-full {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23555' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
    cursor: pointer;
}

/* Colour-mode button resets its own active highlight */
.color-mode-btn.active {
    background: #111111;
    border: 1px solid #2a2a2a;
    color: #f0f0f0;
    box-shadow: 0 2px 8px rgba(176, 58, 91, 0.15);
    font-weight: 700;
}

/* ╔══════════════════════════════════════════════════════════╗
   ║  ADMIN PANEL STYLES — Black & White Professional Theme   ║
   ╚══════════════════════════════════════════════════════════╝ */
:root {
    --a-bg: #0a0a0a;
    --a-panel: #111111;
    --a-panel2: #161616;
    --a-border: #2a2a2a;
    --a-accent: #ffffff;
    --a-accent2: #cccccc;
    --a-danger: #ff4444;
    --a-success: #ffffff;
    --a-text: #f0f0f0;
    --a-muted: #777777;
    --a-hover: #1e1e1e;
}

body.admin-body {
    background: var(--a-bg);
    padding: 0;
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Admin Header ── */
.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 52px;
    background: var(--a-panel);
    border-bottom: 1px solid var(--a-border);
    flex-shrink: 0;
    z-index: 100;
}

.admin-header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 700;
    color: var(--a-text);
    letter-spacing: 0.4px;
}

.admin-header-brand span.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--a-accent);
    display: inline-block;
}

.admin-header-actions {
    display: flex;
    gap: 8px;
}

/* ── Admin Layout ── */
.admin-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ── Left Panel ── */
.admin-left {
    width: 240px;
    background: var(--a-panel);
    border-right: 1px solid var(--a-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
}

.admin-panel-title {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--a-muted);
    padding: 14px 16px 6px;
}

.room-list-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 4px 8px;
}

.room-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    border: 1px solid transparent;
}

.room-list-item:hover {
    background: var(--a-hover);
}

.room-list-item.active {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.room-list-item .room-list-thumb {
    width: 44px;
    height: 30px;
    border-radius: 5px;
    object-fit: cover;
    border: 1px solid var(--a-border);
    flex-shrink: 0;
}

.room-list-item .room-list-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--a-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.room-list-item .room-list-del {
    opacity: 0;
    background: transparent;
    border: none;
    color: var(--a-danger);
    cursor: pointer;
    font-size: 14px;
    padding: 2px 4px;
    border-radius: 4px;
    transition: opacity 0.15s, background 0.15s;
}

.room-list-item:hover .room-list-del {
    opacity: 1;
}

.room-list-item .room-list-del:hover {
    background: rgba(239, 68, 68, 0.15);
}

.admin-left-section {
    padding: 12px 16px;
    border-top: 1px solid var(--a-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ── Center Canvas Area ── */
.admin-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #080808;
    overflow: hidden;
    position: relative;
}

.admin-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--a-panel2);
    border-bottom: 1px solid var(--a-border);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.admin-toolbar .tb-sep {
    width: 1px;
    height: 20px;
    background: var(--a-border);
    margin: 0 4px;
}

.admin-toolbar .tb-btn {
    background: transparent;
    border: 1px solid var(--a-border);
    color: var(--a-muted);
    border-radius: 6px;
    padding: 5px 10px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.admin-toolbar .tb-btn:hover {
    background: var(--a-hover);
    color: var(--a-text);
}

.admin-toolbar .tb-btn.active {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--a-accent);
    color: var(--a-accent);
}

.canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#editorCanvas,
#overlayCanvas {
    position: absolute;
    top: 0;
    left: 0;
}

#overlayCanvas {
    z-index: 10;
    cursor: crosshair;
}

.canvas-status-bar {
    height: 28px;
    background: var(--a-panel2);
    border-top: 1px solid var(--a-border);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 14px;
    font-size: 10px;
    color: var(--a-muted);
    flex-shrink: 0;
}

.canvas-status-bar span {
    font-family: 'Courier New', monospace;
}

/* ── Right Panel ── */
.admin-right {
    width: 280px;
    background: var(--a-panel);
    border-left: 1px solid var(--a-border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    flex-shrink: 0;
}

.admin-section {
    padding: 14px 16px;
    border-bottom: 1px solid var(--a-border);
}

.admin-section-title {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--a-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.admin-section-title .stitle-icon {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
}

/* ── Admin Form Controls ── */
.a-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
}

.a-field:last-child {
    margin-bottom: 0;
}

.a-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--a-muted);
    letter-spacing: 0.3px;
}

.a-input {
    background: var(--a-panel2);
    border: 1px solid var(--a-border);
    color: var(--a-text);
    border-radius: 6px;
    padding: 7px 10px;
    font-size: 12px;
    font-family: 'Inter', sans-serif;
    width: 100%;
    transition: border-color 0.15s;
}

.a-input:focus {
    outline: none;
    border-color: var(--a-accent);
}

.a-select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%237d8590' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
    cursor: pointer;
}

.a-row2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.a-row3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
}

/* ── Surface Buttons ── */
.surface-btn-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
}

.surface-btn {
    background: var(--a-panel2);
    border: 1px solid var(--a-border);
    color: var(--a-muted);
    border-radius: 6px;
    padding: 7px 4px;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.4px;
    cursor: pointer;
    text-transform: uppercase;
    text-align: center;
    transition: all 0.15s;
}

.surface-btn:hover {
    border-color: var(--a-accent);
    color: var(--a-text);
}

.surface-btn.active {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--a-accent);
    color: var(--a-accent);
    font-weight: 800;
}

/* ── Layout Grid ── */
.layout-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
}

.layout-btn {
    background: var(--a-panel2);
    border: 1px solid var(--a-border);
    color: var(--a-muted);
    border-radius: 6px;
    padding: 8px 4px 6px;
    font-size: 9px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.15s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.layout-btn .layout-icon {
    font-size: 18px;
    line-height: 1;
}

.layout-btn:hover {
    border-color: var(--a-accent);
    color: var(--a-text);
}

.layout-btn.active {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--a-accent);
    color: var(--a-accent);
}

/* ── Range Sliders ── */
.a-slider-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.a-slider-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--a-muted);
    width: 60px;
    flex-shrink: 0;
}

.a-slider {
    flex: 1;
    -webkit-appearance: none;
    height: 4px;
    border-radius: 2px;
    background: var(--a-border);
    outline: none;
    cursor: pointer;
}

.a-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--a-accent);
    cursor: pointer;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.15);
}

.a-slider-val {
    font-size: 10px;
    font-weight: 700;
    color: var(--a-text);
    min-width: 32px;
    text-align: right;
    font-family: 'Courier New', monospace;
}

/* ── Colour input ── */
.a-color-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.a-color-swatch {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--a-border);
    cursor: pointer;
    overflow: hidden;
    flex-shrink: 0;
}

.a-color-swatch input[type="color"] {
    width: 200%;
    height: 200%;
    margin: -25%;
    border: none;
    cursor: pointer;
    padding: 0;
}

/* ── Toggle group ── */
.a-toggle-group {
    display: flex;
    background: var(--a-panel2);
    border: 1px solid var(--a-border);
    border-radius: 7px;
    padding: 3px;
    gap: 3px;
}

.a-toggle-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--a-muted);
    border-radius: 5px;
    padding: 6px 8px;
    font-size: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
}

.a-toggle-btn.active {
    background: var(--a-accent);
    color: #000;
    box-shadow: 0 2px 6px rgba(255, 255, 255, 0.15);
}

/* ── Tile Preview ── */
.tile-preview-area {
    background: var(--a-panel2);
    border: 1px dashed var(--a-border);
    border-radius: 8px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: pointer;
    position: relative;
    transition: border-color 0.15s;
}

.tile-preview-area:hover {
    border-color: var(--a-accent);
}

.tile-preview-area img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tile-preview-area .tpa-placeholder {
    font-size: 11px;
    color: var(--a-muted);
    text-align: center;
    line-height: 1.5;
}

/* ── Admin Buttons ── */
.a-btn {
    background: var(--a-panel2);
    border: 1px solid var(--a-border);
    color: var(--a-text);
    border-radius: 7px;
    padding: 9px 14px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    text-decoration: none;
}

.a-btn:hover {
    background: var(--a-hover);
    border-color: #484f58;
}

.a-btn.a-btn-primary {
    background: var(--a-accent);
    border-color: var(--a-accent);
    color: #000;
}

.a-btn.a-btn-primary:hover {
    background: #dddddd;
}

.a-btn.a-btn-success {
    background: var(--a-success);
    border-color: var(--a-success);
    color: #000;
}

.a-btn.a-btn-danger {
    background: var(--a-danger);
    border-color: var(--a-danger);
    color: #fff;
}

.a-btn.a-btn-sm {
    padding: 6px 10px;
    font-size: 11px;
    width: auto;
}

.a-btn.a-btn-warn {
    background: var(--a-accent2);
    border-color: var(--a-accent2);
    color: #000;
}

/* ── Polygon overlay visual cues ── */
.polygon-hint {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 11px;
    padding: 5px 12px;
    border-radius: 999px;
    pointer-events: none;
    backdrop-filter: blur(6px);
    white-space: nowrap;
    z-index: 20;
}

/* ── Toast ── */
.a-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--a-success);
    color: #000;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    z-index: 9999;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    transition: opacity 0.4s;
    max-width: 320px;
}

.a-toast.error {
    background: var(--a-danger);
}

.a-toast.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ── Admin scrollbar ── */
.admin-right::-webkit-scrollbar,
.room-list-scroll::-webkit-scrollbar {
    width: 4px;
}

.admin-right::-webkit-scrollbar-track,
.room-list-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.admin-right::-webkit-scrollbar-thumb,
.room-list-scroll::-webkit-scrollbar-thumb {
    background: var(--a-border);
    border-radius: 2px;
}

/* ── Wall Areas Section ── */
.wall-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--a-panel2);
    border: 1px solid var(--a-border);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 11px;
    color: var(--a-text);
    cursor: pointer;
    transition: all 0.15s;
}

.wall-list-item:hover {
    background: var(--a-hover);
    border-color: #484f58;
}

.wall-list-item.active {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--a-accent);
}

.wall-list-item.active .wall-name {
    font-weight: 700;
    color: var(--a-accent);
}

.wall-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.wall-actions {
    display: flex;
    gap: 4px;
}

.wall-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 11px;
    padding: 2px 4px;
    border-radius: 4px;
    transition: background 0.15s;
    color: var(--a-muted);
}

.wall-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--a-text);
}

.wall-btn.btn-delete:hover {
    color: var(--a-danger);
}

/* Grid Transform Widget */
#gridTransformWidget {
    position: absolute;
    display: none;
    flex-direction: column;
    gap: 8px;
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px;
    z-index: 100;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
    transform: translate(-50%, 20px);
}

.gt-row {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.gt-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: #fff;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.gt-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.25);
}

.gt-btn:active {
    background: rgba(255, 255, 255, 0.25);
}

.gt-btn.reset {
    width: auto;
    padding: 0 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}


/* Gallery Grid Hover Effects */
.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1 !important;
}

.gallery-item {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15) !important;
}

/* =========================================
   GALLERY PAGE (Black & White Theme)
   ========================================= */
.gallery-body {
    font-family: 'Inter', sans-serif !important;
    overflow: auto !important;
    height: auto !important;
    padding: 0 !important;
    display: block !important;
    background-color: #0a0a0a !important;
    /* Deep black */
    color: #f8f9fa !important;
}

.gallery-top-banner {
    background: #111111;
    color: #cccccc;
    text-align: center;
    padding: 12px;
    font-size: 13px;
    font-weight: 500;
    border-bottom: 1px solid #222222;
}

.gallery-top-banner strong {
    color: #ffffff;
}

.gallery-tabs {
    display: flex;
    border-bottom: 2px solid #222222;
    margin-bottom: 24px;
    padding-bottom: 0px;
}

.gallery-tab {
    font-weight: 600;
    color: #777777;
    cursor: pointer;
    font-size: 16px;
    padding: 10px 16px;
}

.gallery-tab.active {
    color: #ffffff;
    border-bottom: 3px solid #ffffff;
    margin-bottom: -2px;
}

.gallery-btn-primary {
    background-color: #ffffff;
    color: #000000;
    font-weight: 600;
    border: 1px solid #ffffff;
    border-radius: 8px;
    padding: 8px 24px;
    transition: all 0.2s ease;
}

.gallery-btn-primary:hover {
    background-color: #e0e0e0;
    border-color: #e0e0e0;
}

.gallery-btn-secondary {
    background-color: transparent;
    color: #ffffff;
    border: 1px solid #444444;
    font-weight: 600;
    border-radius: 8px;
    padding: 8px 24px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.gallery-btn-secondary:hover {
    background-color: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

.gallery-item {
    display: block;
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    position: relative;
    background: #111111;
    border: 1px solid #222222;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 260px;
    transition: transform 0.5s ease;
}

.gallery-item-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-badge {
    background: #ffffff;
    color: #000000;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    transform: translateY(10px);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-badge {
    transform: translateY(0);
}

/* ====================================================================
   TILE FACE PICKER MODAL
   ==================================================================== */
.tile-picker-modal-content {
    background: #111111;
    border: 1px solid #2a2a2a;
    border-radius: 16px;
    color: #f0f0f0;
}

.tile-picker-modal-content .modal-header {
    background: #111111;
    border-bottom: 1px solid #2a2a2a;
    border-radius: 16px 16px 0 0;
    padding: 16px 24px;
}

.tile-picker-modal-content .modal-title {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.tile-picker-modal-content .modal-body {
    padding: 24px;
    max-height: 65vh;
    overflow-y: auto;
}

.tile-picker-modal-content .modal-footer {
    background: #111111;
    border-top: 1px solid #2a2a2a;
    border-radius: 0 0 16px 16px;
    padding: 14px 24px;
    gap: 10px;
}

/* Face grid inside the modal */
.tile-modal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 16px;
}

.tile-modal-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(0, 0, 0, 0.09);
    border: 1.5px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px 10px 14px;
    transition: border-color 0.2s, background 0.2s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.tile-modal-cell:has(.tile-modal-input:not([value="0"])):has(.tile-modal-input[value]) {
    border-color: rgba(0, 0, 0, 0.5);
}

.tile-modal-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 8px;
}

.tile-modal-label {
    font-size: 11px;
    font-weight: 600;
    color: #000;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Spread count input under each face */
.tile-modal-input {
    width: 64px;
    padding: 6px 10px;
    border: 1.5px solid #2a2a2a;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.08);
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    text-align: center;
    outline: none;
    transition: border-color 0.15s, background 0.15s;
}

.tile-modal-input:focus {
    border-color: #000;
    background: rgba(0, 0, 0, 0.15);
}

/* Apply button in modal footer */
.tile-modal-apply-btn {
    background: #ffffff;
    color: #000;
    border: none;
    border-radius: 8px;
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

.tile-modal-apply-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Scrollbar inside modal body */
.tile-picker-modal-content .modal-body::-webkit-scrollbar {
    width: 6px;
}

.tile-picker-modal-content .modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.tile-picker-modal-content .modal-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.btn-close-white {
    filter: invert(1);
}

/* Custom Upload Modal Styling */
.custom-upload-modal {
    background: #111111;
    color: #f0f0f0;
    border: 1px solid #2a2a2a;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.custom-upload-header {
    border-bottom: 1px solid #2a2a2a;
    padding: 20px 24px;
}

.custom-upload-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: #f0f0f0;
}

.custom-upload-body {
    padding: 24px;
}

.custom-upload-label {
    font-weight: 500;
    font-size: 0.9rem;
    color: #aaaaaa;
}

.custom-upload-input {
    background: #f8f9fa;
    border: 1px solid #dde2e5;
    border-radius: 8px;
    padding: 10px 14px;
}

.custom-upload-progress-bg {
    height: 8px;
    background: #eef2f5;
    border-radius: 4px;
    overflow: hidden;
}

.custom-upload-progress-bar {
    background-color: #222;
}

.custom-upload-status {
    font-size: 0.8rem;
}

.custom-upload-footer {
    border-top: 1px solid #2a2a2a;
    padding: 16px 24px;
    background: #111111;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

.custom-upload-btn-secondary {
    background: #aaaaaa;
    color: #ffffff;
    border: none;
    font-weight: 500;
    border-radius: 8px;
    padding: 8px 16px;
}

.custom-upload-btn-primary {
    background: #ffffff;
    border: none;
    font-weight: 500;
    border-radius: 8px;
    padding: 8px 20px;
    color: #000000;
}

.custom-upload-btn-primary:hover {
    background: #f8f9fa;
    color: #000000;
}

/* AI Preloader Overlay - ChatGPT Style Dotted Shimmer */
.ai-preloader {
    position: absolute;
    inset: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.ai-preloader::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(0, 0, 0, 0.5) 2px, transparent 2px);
    background-size: 24px 24px;
    background-position: center;
    -webkit-mask-image: linear-gradient(120deg, rgba(0, 0, 0, 0.1) 30%, rgba(0, 0, 0, 1) 50%, rgba(0, 0, 0, 0.1) 70%);
    -webkit-mask-size: 300% 300%;
    animation: ai-shimmer 2s infinite linear;
}

.ai-preloader.active {
    opacity: 1;
    visibility: visible;
}

@keyframes ai-shimmer {
    0% {
        -webkit-mask-position: 100% 0;
    }

    100% {
        -webkit-mask-position: -50% 0;
    }
}