/* =============================================================
   ARCHVIZ SHOWROOM — STYLES
   Premium dark glassmorphism design for architecture presentations
   ============================================================= */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@200;300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* --- CSS Variables / Design Tokens --- */
:root {
  --accent:       #C8A96E;
  --accent-light: #E4CFA4;
  --accent-dark:  #9A7D4A;
  --bg-base:      #0A0A0C;
  --bg-surface:   #111115;
  --bg-card:      rgba(255,255,255,0.04);
  --bg-glass:     rgba(15,15,20,0.75);
  --bg-glass-hover: rgba(25,25,35,0.85);
  --border:       rgba(255,255,255,0.08);
  --border-accent: rgba(200,169,110,0.3);
  --text-primary: #F0EDE8;
  --text-secondary: rgba(240,237,232,0.55);
  --text-muted:   rgba(240,237,232,0.3);
  --shadow-sm:    0 2px 12px rgba(0,0,0,0.4);
  --shadow-md:    0 8px 32px rgba(0,0,0,0.6);
  --shadow-lg:    0 24px 64px rgba(0,0,0,0.8);
  --shadow-accent: 0 0 30px rgba(200,169,110,0.15);
  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    20px;
  --radius-xl:    28px;
  --blur-sm:      blur(8px);
  --blur-md:      blur(20px);
  --blur-lg:      blur(40px);
  --transition:   all 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: all 0.5s cubic-bezier(0.4,0,0.2,1);
  --menu-width:   340px;
  --header-h:     64px;
  --font-display: 'Outfit', sans-serif;
  --font-body:    'Inter', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* ============================================================
   LOADING SCREEN
   ============================================================ */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.6s ease;
}
#loading-screen.fade-out { opacity: 0; pointer-events: none; }
.loader-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 2rem;
  text-transform: uppercase;
}
.loader-bar {
  width: 200px;
  height: 1px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}
.loader-bar::after {
  content: '';
  position: absolute;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: loadbar 1.5s ease-in-out infinite;
}
@keyframes loadbar {
  to { left: 100%; }
}
.loader-text {
  margin-top: 1rem;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ============================================================
   LAYOUT — MAIN SHELL
   ============================================================ */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Divides the viewport into header + content row */
#content-row {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* ============================================================
   HEADER
   ============================================================ */
#header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 50;
  flex-shrink: 0;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.project-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}
.project-brand span {
  color: var(--accent);
}
.project-subtitle {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2px;
}
.header-divider {
  width: 1px;
  height: 28px;
  background: var(--border);
  margin: 0 0.5rem;
}
.status-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: rgba(200,169,110,0.06);
}
.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(200,169,110,0.4); }
  50%       { opacity: 0.8; box-shadow: 0 0 0 4px rgba(200,169,110,0); }
}
.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.header-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition);
}
.header-btn:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  background: rgba(200,169,110,0.06);
}
.header-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(200,169,110,0.1);
}
.menu-toggle-btn {
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-accent);
  background: rgba(200,169,110,0.08);
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
}
.menu-toggle-btn:hover {
  background: rgba(200,169,110,0.18);
  box-shadow: var(--shadow-accent);
}
.menu-toggle-btn svg { width: 16px; height: 16px; }

/* ============================================================
   VIEW MODE TABS (centered in header)
   ============================================================ */
.view-tabs {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.2rem;
}
.view-tab {
  padding: 0.4rem 1rem;
  border-radius: 4px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.view-tab.active {
  background: rgba(200,169,110,0.15);
  color: var(--accent);
}
.view-tab:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

/* ============================================================
   MAIN VIEWER AREA
   ============================================================ */
#viewer-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #070709;
}

/* Pannellum overrides */
#panorama-viewer {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  display: block;
}
#panorama-viewer.hidden { display: none; }

/* Pannellum control overrides */
.pnlm-ui .pnlm-controls-container { bottom: 100px !important; left: 16px !important; }
.pnlm-ui .pnlm-load-box { background: rgba(10,10,12,0.9); border: 1px solid var(--border); border-radius: var(--radius-md); }
.pnlm-load-box p { color: var(--accent); font-family: var(--font-display); }
.pnlm-load-bar > div { background: var(--accent) !important; }
.pnlm-ui .pnlm-about-msg { display: none !important; }
.pnlm-controls button { background: var(--bg-glass) !important; border: 1px solid var(--border) !important; color: var(--text-secondary) !important; }
.pnlm-controls button:hover { background: var(--bg-glass-hover) !important; color: var(--accent) !important; }

/* Custom Hotspot Arrows */
.custom-hotspot {
  background: none;
  border: none;
  cursor: pointer;
  position: absolute;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  pointer-events: auto;
}
.hotspot-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.2s ease;
}
.hotspot-arrow:hover { transform: scale(1.15); }
.hotspot-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(200,169,110,0.15);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: var(--blur-sm);
  animation: hotspot-pulse 2.5s ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(200,169,110,0.4), inset 0 0 20px rgba(200,169,110,0.1);
  transition: var(--transition);
}
.hotspot-circle:hover {
  background: rgba(200,169,110,0.3);
  box-shadow: 0 0 20px rgba(200,169,110,0.4);
}
.hotspot-circle svg { width: 20px; height: 20px; color: var(--accent); fill: none; stroke: currentColor; stroke-width: 2; }
@keyframes hotspot-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(200,169,110,0.5); }
  70%  { box-shadow: 0 0 0 14px rgba(200,169,110,0); }
  100% { box-shadow: 0 0 0 0 rgba(200,169,110,0); }
}
.hotspot-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-shadow: 0 1px 8px rgba(0,0,0,0.9), 0 0 20px rgba(0,0,0,0.8);
  white-space: nowrap;
  background: rgba(0,0,0,0.5);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  backdrop-filter: blur(4px);
}

/* Pannellum custom hotspot wrapper */
.pnlm-hotspot.pnlm-custom {
  background: none;
  border: none;
  width: auto;
  height: auto;
}

/* ============================================================
   STATIC IMAGE VIEWER
   ============================================================ */
#static-viewer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #050507;
  transition: opacity 0.4s ease;
}
#static-viewer.hidden { opacity: 0; pointer-events: none; }
#static-viewer img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   PLAN VIEWER
   ============================================================ */
#plan-viewer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #050507;
  transition: opacity 0.4s ease;
  overflow: hidden;
}
#plan-viewer.hidden { opacity: 0; pointer-events: none; }
.plan-container {
  position: relative;
  display: inline-block;
  max-width: 90%;
  max-height: 90%;
}
.plan-container img {
  display: block;
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}
.plan-zone {
  position: absolute;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  z-index: 50;
}

.plan-hotspot-dot {
  width: 16px;
  height: 16px;
  background: #007AFF;
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 122, 255, 0.6);
  border: 2px solid white;
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  flex-shrink: 0;
}

.plan-zone:hover .plan-hotspot-dot {
  transform: scale(1.4);
}

.plan-zone-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: #1a1a1a;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  padding: 0.3rem 0.8rem;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  white-space: nowrap;
  transform: translateY(5px);
}
.plan-zone:hover .plan-zone-label { 
  opacity: 1; 
  transform: translateY(0);
}
/* Plan tip bar */
.plan-tip {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-glass);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  backdrop-filter: var(--blur-sm);
  white-space: nowrap;
  pointer-events: none;
}

/* Viewer Containers */
.viewer-container {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  transition: opacity 0.4s ease;
  overflow: hidden;
  z-index: 10;
}

.viewer-container.hidden {
  display: none !important;
  opacity: 0;
  pointer-events: none;
  z-index: 0;
}

/* 3D View / Exterior */
#view3d-viewer {
  position: absolute;
  inset: 0;
  background: #050507;
  transition: opacity 0.4s ease;
  overflow: hidden;
}
#view3d-viewer.hidden { opacity: 0; pointer-events: none; }
#view3d-viewer > img,
#view3d-viewer > model-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
  transition: opacity 0.4s ease;
  --poster-color: transparent;
}
/* Mode Toggle (2D/3D) */
.view-mode-toggle {
  position: absolute;
  top: calc(var(--header-h) + 15px);
  left: 15px;
  z-index: 1500;
  display: flex;
  gap: 6px;
  background: var(--bg-glass);
  padding: 6px;
  border-radius: 40px;
  border: 1px solid var(--border);
  backdrop-filter: var(--blur-sm);
  box-shadow: var(--shadow-md);
  pointer-events: auto;
}

/* Back Button specifically for Renders */
.back-actions {
  position: absolute;
  top: calc(var(--header-h) + 15px);
  left: 15px;
  z-index: 1500;
  display: flex;
  background: var(--bg-glass);
  border-radius: 40px;
  border: 1px solid var(--border);
  backdrop-filter: var(--blur-sm);
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  overflow: hidden;
}

.back-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.back-btn:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.mode-btn {
  padding: 6px 16px;
  border-radius: 30px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}

.mode-btn:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.mode-btn.active {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(200,169,110,0.3);
}

.view3d-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.view3d-tab {
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
}
.view3d-tab.active, .view3d-tab:hover {
  border-color: var(--border-accent);
  color: var(--accent);
  background: rgba(200,169,110,0.08);
}

/* ============================================================
   OVERLAY — INFO BAR (bottom of viewer)
   ============================================================ */
#viewer-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem 1.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
}
.current-space-info {
  pointer-events: auto;
}
.current-space-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.25rem;
  opacity: 0.8;
}
.current-space-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  text-shadow: 0 2px 12px rgba(0,0,0,0.8);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}
.breadcrumb-sep { color: var(--accent); }
.viewer-overlay-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
}
.fullscreen-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.15);
  background: var(--bg-glass);
  backdrop-filter: var(--blur-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.fullscreen-btn:hover { border-color: var(--border-accent); color: var(--accent); }
.fullscreen-btn svg { width: 16px; height: 16px; }

/* ============================================================
   RIGHT SIDE MENU
   ============================================================ */
#side-menu {
  width: var(--menu-width);
  height: 100%;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-lg);
  -webkit-backdrop-filter: var(--blur-lg);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateX(0);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1), width 0.4s cubic-bezier(0.4,0,0.2,1);
  flex-shrink: 0;
  position: relative;
  z-index: 40;
}
#side-menu.collapsed {
  width: 0;
  border-left-color: transparent;
}

.menu-header {
  padding: 1.25rem 1.25rem 0;
  flex-shrink: 0;
}
.menu-section-title {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.menu-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.menu-scroll::-webkit-scrollbar { width: 3px; }
.menu-scroll::-webkit-scrollbar-track { background: transparent; }
.menu-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.menu-scroll::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Menu Sections (collapsible) */
.menu-section {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: var(--transition);
}
.menu-section:hover { border-color: rgba(255,255,255,0.1); }
.menu-section.open { border-color: var(--border-accent); }
.section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}
.section-header:hover { background: rgba(255,255,255,0.03); }
.section-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(200,169,110,0.1);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}
.menu-section.open .section-icon { background: rgba(200,169,110,0.2); }
.section-icon svg { width: 15px; height: 15px; color: var(--accent); }
.section-text { flex: 1; }
.section-name {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
}
.section-desc {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}
.section-chevron {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.menu-section.open .section-chevron { transform: rotate(180deg); color: var(--accent); }
.section-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4,0,0.2,1);
}
.menu-section.open .section-body { max-height: 800px; }
.section-body-inner { padding: 0.5rem 0.75rem 0.75rem; display: flex; flex-direction: column; gap: 0.35rem; }

/* Menu Item Buttons */
.menu-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
  width: 100%;
  position: relative;
  overflow: hidden;
}
.menu-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.2s ease;
}
.menu-item:hover {
  background: rgba(255,255,255,0.04);
  border-color: var(--border);
  color: var(--text-primary);
}
.menu-item.active {
  background: rgba(200,169,110,0.08);
  border-color: var(--border-accent);
  color: var(--accent);
}
.menu-item.active::before { transform: scaleY(1); }
.menu-item-icon { width: 14px; height: 14px; flex-shrink: 0; stroke-width: 2; }
.menu-item-text { flex: 1; }
.menu-item-badge {
  font-size: 0.6rem;
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  background: rgba(200,169,110,0.15);
  color: var(--accent);
  border: 1px solid var(--border-accent);
  letter-spacing: 0.05em;
}

/* Levels navigation pills */
.level-pills {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.level-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
  width: 100%;
  font-family: var(--font-body);
}
.level-pill:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(200,169,110,0.3);
}
.level-pill.active {
  background: rgba(200,169,110,0.1);
  border-color: var(--accent);
}
.level-pill-badge {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(200,169,110,0.1);
  border: 1px solid var(--border-accent);
  border-radius: 4px;
  min-width: 36px;
  text-align: center;
  padding: 0.2rem 0.3rem;
}
.level-pill-info { flex: 1; }
.level-pill-name {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-primary);
}
.level-pill-area {
  font-size: 0.62rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

/* Menu Footer — specs */
.menu-footer {
  flex-shrink: 0;
  padding: 0.75rem;
  border-top: 1px solid var(--border);
}
.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}
.spec-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  text-align: center;
}
.spec-value {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}
.spec-label {
  font-size: 0.58rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.15rem;
}

/* ============================================================
   THUMBNAILS STRIP (bottom of viewer)
   ============================================================ */
#thumb-strip {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 100%);
  overflow-x: auto;
  overflow-y: hidden;
  z-index: 15;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
#thumb-strip::-webkit-scrollbar { height: 3px; }
#thumb-strip::-webkit-scrollbar-track { background: transparent; }
#thumb-strip::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
#thumb-strip.hidden { opacity: 0; pointer-events: none; transform: translateY(10px); }
.thumb-item {
  flex-shrink: 0;
  width: 88px;
  height: 56px;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  position: relative;
}
.thumb-item:hover { border-color: rgba(200,169,110,0.5); transform: scale(1.05); }
.thumb-item.active { border-color: var(--accent); }
.thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.thumb-item-type {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.thumb-item-type svg { width: 10px; height: 10px; color: var(--accent); }

/* ============================================================
   MODAL — Full Image Lightbox
   ============================================================ */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  backdrop-filter: var(--blur-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
#modal-overlay.open { opacity: 1; pointer-events: all; }
.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}
.modal-content img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}
.modal-close {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: var(--blur-sm);
  transition: var(--transition);
}
.modal-close:hover { border-color: var(--border-accent); color: var(--accent); }
.modal-close svg { width: 16px; height: 16px; }

/* ============================================================
   INFO PANEL — Level details flyout
   ============================================================ */
#info-panel {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--blur-md);
  padding: 1.25rem;
  width: 240px;
  z-index: 20;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
#info-panel.hidden { opacity: 0; pointer-events: none; transform: translateX(-10px); }
.info-level-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.info-level-area {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 200;
  color: var(--accent);
  letter-spacing: 0.04em;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.info-level-desc {
  font-size: 0.7rem;
  color: var(--text-secondary);
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 0.65rem;
}

/* ============================================================
   FADE TRANSITION (between views)
   ============================================================ */
.view-transition {
  position: absolute;
  inset: 0;
  background: var(--bg-base);
  z-index: 30;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.view-transition.active { opacity: 1; pointer-events: all; }

/* ============================================================
   PLACEHOLDER (no image)
   ============================================================ */
.no-image-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--text-muted);
  text-align: center;
  height: 100%;
}
.no-image-placeholder svg { width: 48px; height: 48px; opacity: 0.3; }
.no-image-placeholder p { font-size: 0.8rem; letter-spacing: 0.1em; }
.placeholder-path {
  font-family: monospace;
  font-size: 0.65rem;
  color: var(--accent);
  opacity: 0.6;
  background: rgba(200,169,110,0.05);
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  border: 1px solid var(--border-accent);
}

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
#toast-container {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  z-index: 500;
  pointer-events: none;
}
.toast {
  background: var(--bg-glass);
  border: 1px solid var(--border-accent);
  backdrop-filter: var(--blur-md);
  border-radius: 100px;
  padding: 0.5rem 1.25rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-transform: uppercase;
  animation: toast-in 0.3s ease, toast-out 0.3s ease 2s forwards;
  white-space: nowrap;
}
@keyframes toast-in  { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toast-out { from { opacity: 1; } to { opacity: 0; } }

/* ============================================================
   WELCOME SCREEN
   ============================================================ */
#welcome-viewer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-base);
  z-index: 50;
}
#welcome-viewer.hidden {
  display: none;
}
#welcome-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.8;
}
.welcome-overlay {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
#welcome-title {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: #fff;
  text-transform: uppercase;
  text-shadow: 0 4px 20px rgba(0,0,0,0.8);
  margin: 0;
}
#welcome-subtitle {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
  text-shadow: 0 2px 10px rgba(0,0,0,0.8);
  margin: 0;
}
.welcome-actions {
  display: flex;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}
.welcome-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(0,0,0,0.4);
  color: white;
  backdrop-filter: blur(8px);
}
.welcome-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
  transform: translateY(-2px);
}
.welcome-btn.btn-gold {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
  font-weight: 600;
}
.welcome-btn.btn-gold:hover {
  background: var(--accent-light);
  box-shadow: 0 0 20px rgba(200,169,110,0.4);
}
.welcome-btn svg { width: 18px; height: 18px; }

/* ============================================================
   DAY / NIGHT TOGGLE HEADER BUTTON & CROSSFADE
   ============================================================ */
.icon-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  display: flex !important;
  align-items: center;
  justify-content: center;
  border-radius: 50% !important;
}
.icon-btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}
.icon-btn:hover svg {
  transform: rotate(15deg) scale(1.1);
}
.header-btn.hidden {
  display: none !important;
}

/* 3D / 2D PLAN TOGGLE */
.plan-toggle-container {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 50;
  display: flex;
}
.plan-toggle {
  display: flex;
  background: var(--bg-glass);
  border-radius: 30px;
  padding: 4px;
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.plan-btn {
  padding: 0.35rem 1rem;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.plan-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Crossfade Cinematic Effect */
.crossfade-in {
  animation: cinematicFadeIn 1s ease-in-out forwards;
}
.render-fading-out {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  animation: cinematicFadeOut 1s ease-in-out forwards;
}

/* EXTERIOR HOTSPOT */
.exterior-hotspot {
  background: none;
  border: none;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 200;
  outline: none;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.exterior-hotspot:hover {
  transform: scale(1.4);
}

.hotspot-core {
  width: 18px;
  height: 18px;
  background: #007AFF; /* Bright blue as requested */
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 15px rgba(0, 122, 255, 0.6);
  border: 2px solid white;
}

.hotspot-ring {
  position: absolute;
  width: 32px;
  height: 32px;
  border: 3px solid #007AFF;
  border-radius: 50%;
  animation: pulse-ring 2s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
  opacity: 0.8;
}
.exterior-hotspot:hover .hotspot-core {
  transform: scale(1.2);
}
@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

/* VERTICAL LEVEL SELECTOR */
.level-selector-vertical {
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 0.75rem 0.5rem;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  z-index: 100;
  max-height: 85vh;
  overflow-y: auto;
  scrollbar-width: none;
}
.level-selector-vertical::-webkit-scrollbar { display: none; }

.level-btn {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-main);
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
  text-transform: uppercase;
  flex-shrink: 0;
}
.level-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: scale(1.1);
}
.level-btn.active {
  background: #fff;
  color: #1a1a1a;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

/* ============================================================
   DRONE FLIGHT — LEVEL TRANSITION SLIDE ANIMATIONS
   Minimal directional slide, like a drone changing altitude.
   ============================================================ */

/* Going UP: content slides in from below */
@keyframes droneSlideUp {
  from { transform: translateY(28px); opacity: 0; filter: blur(3px); }
  to   { transform: translateY(0);    opacity: 1; filter: blur(0); }
}
/* Going DOWN: content slides in from above */
@keyframes droneSlideDown {
  from { transform: translateY(-28px); opacity: 0; filter: blur(3px); }
  to   { transform: translateY(0);     opacity: 1; filter: blur(0); }
}
/* Entry from exterior: gentle drop + slight scale */
@keyframes droneEntry {
  from { transform: translateY(-18px) scale(0.98); opacity: 0; filter: blur(4px); }
  to   { transform: translateY(0)     scale(1);    opacity: 1; filter: blur(0); }
}

.plan-container.slide-up    { animation: droneSlideUp   0.38s cubic-bezier(0.25,0.46,0.45,0.94) both; }
.plan-container.slide-down  { animation: droneSlideDown 0.38s cubic-bezier(0.25,0.46,0.45,0.94) both; }
.plan-container.slide-entry { animation: droneEntry     0.42s cubic-bezier(0.25,0.46,0.45,0.94) both; }

@keyframes cinematicFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes cinematicFadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  :root { --menu-width: 290px; }
  .view-tabs { display: none; }
  .header-btn { display: none; }
  #info-panel { width: 180px; }
  .thumb-item { width: 72px; height: 46px; }
}