/* Clock */
.nowtime {
  position: absolute;
  top: 15px;
  left: 15px;
  background: rgba(0, 0, 0, 0.7);
  padding: 15px 25px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 9998;
  transform: translateZ(0);
  transition: all 0.3s ease;
  display: none;
}

.nowtime.visible {
  display: block;
}

.nowtime:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: translateY(-2px) translateZ(0);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

#time {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: white;
  letter-spacing: 2px;
  margin: 0;
  line-height: 1;
}

#colon {
  animation: blink 1s infinite;
  opacity: 1;
  margin: 0 5px;
}

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

/* Background library */
#bgLibrary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

#bgLibrary img {
  width: 100%;
  height: 64px;
  object-fit: cover;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.15);
}

#bgLibrary img.selected {
  outline: 3px solid #007bff;
  outline-offset: 0;
}

/* Fullscreen viewer */
.bg-viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  display: none;
  z-index: 10003;
  align-items: center;
  justify-content: center;
}

.bg-viewer-overlay.visible {
  display: flex;
}

.bg-viewer-overlay img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.6);
}

.bg-viewer-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: #333;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}

.bg-viewer-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: #333;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px 14px;
  cursor: pointer;
}

.bg-viewer-nav.prev { left: 20px; }
.bg-viewer-nav.next { right: 20px; }

.bg-viewer-counter {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  color: #ddd;
  font-size: 12px;
  background: rgba(255,255,255,0.08);
  padding: 4px 8px;
  border-radius: 6px;
}

/* Model gallery */
.model-gallery-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  display: none;
  z-index: 10020;
  overflow: auto;
}

.model-gallery-overlay.visible {
  display: block;
}

.model-gallery-close {
  position: fixed;
  top: 16px;
  right: 20px;
  background: #333;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}

.model-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  padding: 80px 24px 24px;
}

.model-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.model-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-accent);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.06);
}

.model-thumb {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: #000;
}

.model-name {
  padding: 10px 12px;
  color: #eee;
  font-size: 14px;
  text-align: center;
}

/* Tutorial overlay */
.tutorial-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  display: none;
  z-index: 10002;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

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

.tutorial-overlay.visible {
  display: flex;
}

.tutorial-modal {
  background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
  color: #fff;
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  padding: 0;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.tutorial-modal h3 {
  margin: 0;
  padding: 24px;
  font-size: 22px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 12px;
}

.tutorial-controls {
  display: flex;
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  justify-content: flex-end;
}

.tutorial-controls button {
  background: #007bff;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 24px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.tutorial-controls button:hover {
  background: #0056b3;
  transform: translateY(-1px);
}

.tutorial-controls #tutorialPrevBtn,
.tutorial-controls #tutorialNextBtn {
  display: none;
}

#tutorialBody {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
}

#tutorialBody h4 {
  margin: 24px 0 12px 0;
  font-size: 18px;
  color: #4da3ff;
  border-bottom: 1px solid rgba(77, 163, 255, 0.2);
  padding-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

#tutorialBody h4:first-child {
  margin-top: 0;
}

.settings-tutorial-content {
  padding: 0;
  color: #eee;
}

.tutorial-doc-link-card {
  margin-bottom: 16px;
}

.tutorial-doc-link {
  margin-top: 10px;
}

.tutorial-step-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.2s ease;
}

.tutorial-step-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
}

.tutorial-step-card h4,
.settings-tutorial-content h4 {
  margin: 0 0 8px 0;
  font-size: 15px;
  color: #4da3ff;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.settings-tutorial-content h4:first-child {
  margin-top: 0;
}

.settings-tutorial-content p {
  font-size: 13px;
  line-height: 1.5;
  margin: 0;
  color: #bbb;
}

.tutorial-details-section {
  margin-top: 24px;
  padding: 16px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.tutorial-details-section h4 {
  font-size: 14px;
  color: #88c0ff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 16px 0 8px 0;
}

.tutorial-details-section h4:first-child {
  margin-top: 0;
}

.tutorial-details-section p {
  font-size: 12px;
  color: #999;
  margin-bottom: 12px;
}