:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --surface2: #242424;
  --border: #333;
  --accent: #f5c842;
  --accent2: #e05c3a;
  --text: #f0ede6;
  --text-muted: #888;
  --cam: #4a9eff;
  --light-el: #ffcc44;
  --person: #ff6b6b;
  --prop: #7bed9f;
  --room-bg: #fafaf7;
  --room-grid: #e8e8e0;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --r: 6px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Arial', sans-serif;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}


/* HEADER */
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
}

.logo {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent);
  white-space: nowrap;
}

.logo span {
  color: var(--text);
}

.header-sep {
  flex: 1;
}

.header-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--surface2);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn:hover {
  background: var(--border);
  border-color: #555;
}

.btn.primary {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
  font-weight: 700;
}

.btn.primary:hover {
  background: #ffd93d;
}

.btn.danger {
  background: transparent;
  border-color: var(--accent2);
  color: var(--accent2);
}

.btn.danger:hover {
  background: var(--accent2);
  color: #fff;
}


/* LAYOUT */
.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.app-body .contact-link {
  position: absolute;
  bottom: .5rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  text-decoration: none;
  transition: all .3s ease-out;
  z-index: 10;
  padding: 1rem 0;
}

.app-body .contact-link:hover {
  text-decoration: underline;
  color: var(--accent);
}

/* SIDEBAR */
.sidebar {
  width: 220px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-section {
  padding: 14px 14px 6px;
}

.sidebar-title {
  font-size: 0.8rem;
  color: var(--text);
  letter-spacing: 0.12em;
  margin-bottom: 10px;
}

.elements-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 10px;
}

.element-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px 6px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--room-bg);
  cursor: grab;
  transition: all 0.15s;
  user-select: none;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.2;
}

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

.element-btn .icon {
  max-width: 80%;
  max-height: 80%;
}

.element-btn[data-type="camera"] .icon {
  color: var(--cam);
}

.element-btn[data-type="light"] .icon {
  color: var(--light-el);
}

.element-btn[data-type="person"] .icon {
  color: var(--person);
}

.element-btn[data-type="table"] .icon {
  color: var(--prop);
}

.element-btn[data-type="chair"] .icon {
  color: var(--prop);
}

.element-btn[data-type="door"] .icon {
  color: #aaa;
}

.element-btn[data-type="window"] .icon {
  color: #aaa;
}

.element-btn[data-type="wall"] .icon {
  color: #aaa;
}

.element-btn[data-type="monitor"] .icon {
  color: var(--cam);
}

.element-btn[data-type="micro"] .icon {
  color: var(--light-el);
}

.element-btn[data-type="reflector"] .icon {
  color: var(--light-el);
}

.element-btn[data-type="tripod"] .icon {
  color: var(--cam);
}

.element-btn[data-type="arrow"] .icon {
  color: #ccc;
}

.element-btn[data-type="text"] .icon {
  color: var(--accent);
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 6px 14px;
}


/* PROPS PANEL */
.props-panel {
  padding: 14px;
}

.prop-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 8px;
}

.prop-label {
  font-size: 0.6rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.prop-input {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--r);
  padding: 7px 10px;
  width: 80px;
  text-align: right;
}

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

input[type="color"].prop-input {
  width: 40px; padding: 2px; cursor: pointer; height: 28px;
}

input[type="range"].prop-input {
  width: 80px; padding: 0; cursor: pointer; accent-color: var(--accent);
}

.prop-input-full {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--r);
  padding: 7px 10px;
}

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

.no-selection {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.68rem;
  margin-top: 20px;
  line-height: 1.7;
}


/* CANVAS AREA */
.canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #111;
  overflow: hidden;
  position: relative;
}

.canvas-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tool-btn {
  font-size: .8rem;
  padding: 5px 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  background: var(--surface2);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 5px;
}

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

.tool-btn.active {
  background: var(--accent); color: #111; border-color: var(--accent);
}

.zoom-display {
  font-size: 0.65rem;
  color: var(--text-muted);
  min-width: 44px;
  text-align: center;
}

.canvas-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
  cursor: default;
}

#main-canvas {
  position: absolute;
  top: 0; left: 0;
  cursor: crosshair;
}


/* LEGEND */
.legend {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(26,26,26,0.92);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 14px;
  font-size: 0.6rem;
  color: var(--text-muted);
  line-height: 1.9;
  backdrop-filter: blur(6px);
}

.legend b {
  color: var(--accent);
}

#ctx-menu {
  display:none;
  position:fixed;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:6px;
  padding:4px;
  z-index:200;
  min-width:140px;
  box-shadow:0 8px 24px rgba(0,0,0,0.5)
}

.ctx-item {
  padding:7px 12px;
  font-size:0.7rem;
  cursor:pointer;
  border-radius:4px;
}

.ctx-item-delete {
  color: var(--accent2);
}

/* MODAL */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 100;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  width: 380px;
  box-shadow: var(--shadow);
}

.modal h2 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.modal label {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.modal input, .modal select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 0.75rem;
  margin-bottom: 14px;
}

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

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 6px;
}

::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: var(--surface);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.snap-indicator {
  position: absolute;
  pointer-events: none;
  border: 2px dashed var(--accent);
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.1s;
}

.mobile-wrapper {
  display: none;
  position: fixed;
  top: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 1rem;
  padding: 2rem 1.5rem;
  z-index: 10;
}

.mobile-wrapper .logo {
  font-size: 2rem;
}

.mobile-wrapper p {
  font-size: 1.2rem;
  color: var(--text);
  text-align: center;
}

.mobile-wrapper .contact-link {
  color: var(--text);
  font-size: 1.2rem;
  transition: color .3s ease-out;
  cursor: pointer;
}

.mobile-wrapper .contact-link:active {
  color: var(--accent);
}

@media (max-width: 768px) {
  .mobile-wrapper {
    display: flex;
  }

  header {
    display: none;
  }

  .app-body {
    display: none;
  }
}