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

@property --ai-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}
@keyframes ai-spin { to { --ai-angle: 360deg; } }
@keyframes hint-blob-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes siri-orb {
  0%   { background-position: 0% 50%;   transform: scaleX(0.9) scaleY(0.75); opacity: 0.75; }
  50%  { background-position: 100% 50%; transform: scaleX(1.1) scaleY(1.2);  opacity: 1; }
  100% { background-position: 0% 50%;   transform: scaleX(0.9) scaleY(0.75); opacity: 0.75; }
}
@keyframes stream-blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bubblePop {
  from { opacity: 0; transform: translateY(-6px) scale(0.94); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

:root {
  --color-bg: #f2f2f7;
  --color-surface: #ffffff;
  --color-border: rgba(0,0,0,0.07);
  --color-text: #1d1d1f;
  --color-muted: #8e8e93;
  --color-accent-from: #7a00df;
  --color-accent-to: #0693e3;
  --color-confirmed: #1a7a35;
  --color-video-based: #7a4500;
  --radius: 14px;
  --radius-sm: 10px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.header {
  border-bottom: 1px solid var(--color-border);
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-logo { display: flex; align-items: center; gap: 10px; }
.logo-pill {
  background: linear-gradient(135deg, var(--color-accent-from), var(--color-accent-to));
  border-radius: 8px;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo-name { font-size: 15px; font-weight: 700; letter-spacing: -0.3px; color: var(--color-text); }
.logo-name span { color: var(--color-accent-from); }
.header-back {
  font-size: 13px;
  color: var(--color-accent-from);
  text-decoration: none;
  font-weight: 600;
  opacity: 0.85;
  transition: opacity 0.15s;
}
.header-back:hover { opacity: 1; }

.page-wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 16px;
}

.product-header { margin-bottom: 20px; }
.product-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-accent-from), var(--color-accent-to));
  color: white;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.8px; text-transform: uppercase;
  padding: 4px 10px; border-radius: 20px;
  margin-bottom: 10px;
}
.product-title {
  font-size: 22px; font-weight: 700; line-height: 1.3;
  margin-bottom: 4px; letter-spacing: -0.02em;
}
.product-subtitle { font-size: 14px; color: var(--color-muted); }

.player-shell {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  background: #000;
}

.player-wrapper {
  position: relative;
  width: 100%;
}

.view-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.media-view {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
}
.media-view.active {
  display: flex;
}

.view-images {
  background: #f0f0f0;
}
.view-images img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.view-video {
  background: #000;
}
.view-video video {
  width: 100%;
  height: 100%;
  display: block;
}

.view-3d {
  background: radial-gradient(ellipse at center, #1a1a2a 0%, #0a0a0f 100%);
}
.view-3d iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.view-ar {
  background: radial-gradient(ellipse at center, #2e1a2e 0%, #0f0a12 100%);
  flex-direction: column;
  gap: 12px;
  color: #ddd;
}
.ar-qr-placeholder {
  width: 140px;
  height: 140px;
  background: #fff;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
.ar-qr-inner {
  width: 110px;
  height: 110px;
  background: repeating-conic-gradient(#333 0% 25%, #fff 0% 50%) 50%/10px 10px;
  border-radius: 4px;
}

.thumbnail-strip {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  align-items: center;
  background: #0a0a0a;
  transition: background 0.3s;
}
.player-shell.theme-light .thumbnail-strip {
  background: #fff;
  border-top: 1px solid #eee;
}

.thumb {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  flex-shrink: 0;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.15s;
  position: relative;
}
.thumb:hover { transform: scale(1.05); }
.thumb.active { border-color: var(--color-accent-from); }

.thumb-image {
  background: #222;
}
.player-shell.theme-light .thumb-image {
  background: #eee;
  border-color: #ddd;
}
.player-shell.theme-light .thumb-image.active {
  border-color: #333;
}
.thumb-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-demoup {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border-color: #444;
}
.player-shell.theme-light .thumb-demoup {
  border-color: #ddd;
}
.thumb-demoup .thumb-icon {
  color: #fff;
  font-size: 16px;
  line-height: 1;
}
.thumb-demoup .thumb-label {
  font-size: 7px;
  color: rgba(255,255,255,0.75);
  font-weight: 600;
  letter-spacing: 0.3px;
}

.thumb-video  { background: linear-gradient(135deg, #1a1a2e, #2d2d44); }
.thumb-3d     { background: linear-gradient(135deg, #1a2e1a, #2d442d); }
.thumb-ar     { background: linear-gradient(135deg, #2e1a2e, #442d44); }

.thumb-separator {
  width: 1px;
  height: 36px;
  background: #333;
  flex-shrink: 0;
}
.player-shell.theme-light .thumb-separator {
  background: #ddd;
}

.ask-ai-btn {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  color: var(--color-text);
  border: none;
  border-radius: 20px;
  padding: 7px 15px;
  font-size: 13px; font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: filter 0.2s, transform 0.15s;
  isolation: isolate;
  --ai-angle: 0deg;
}
.ask-ai-btn::before {
  content: '';
  position: absolute; inset: -8px; border-radius: 28px;
  background: conic-gradient(from var(--ai-angle), #bf5af2, #0a84ff, #30d158, #ff9f0a, #ff375f, #bf5af2);
  z-index: -1;
  animation: ai-spin 8s linear infinite;
  filter: blur(10px);
  opacity: 0.85;
}
.ask-ai-btn::after {
  content: '';
  position: absolute; inset: 0; border-radius: 20px;
  background: rgba(255,255,255,0.92);
  z-index: -1;
}
.ask-ai-btn:hover  { filter: brightness(0.96); transform: scale(1.02); }
.ask-ai-btn:active { transform: scale(0.98); }

.atc-floating {
  position: absolute;
  bottom: 14px; right: 14px;
  z-index: 90;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 8px;
  padding: 7px 16px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s, transform 0.1s;
  font-family: inherit;
}
.atc-floating:hover { background: rgba(255,255,255,0.25); }
.atc-floating:active { transform: scale(0.97); }
.atc-floating.added {
  background: rgba(26,122,53,0.8);
  border-color: rgba(26,122,53,0.5);
}

.player-shell.theme-light .atc-floating {
  background: rgba(0,0,0,0.06);
  color: var(--color-text);
  border-color: rgba(0,0,0,0.12);
}
.player-shell.theme-light .atc-floating:hover {
  background: rgba(0,0,0,0.1);
}

.video-controls {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 20px 16px 12px;
  z-index: 80;
  display: none;
}
.video-controls.visible { display: block; }

.video-progress {
  height: 3px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
  margin-bottom: 10px;
  cursor: pointer;
  position: relative;
}
.video-progress-fill {
  height: 100%;
  background: var(--color-accent-from);
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s linear;
}

.video-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.video-controls-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.video-play-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  padding: 0;
}
.video-time {
  color: rgba(255,255,255,0.6);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.video-atc {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s;
  font-family: inherit;
}
.video-atc:hover { background: rgba(255,255,255,0.25); }

.qa-section {
  position: absolute;
  top: 0; right: 0;
  width: 360px; max-width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
}
.qa-section.open { transform: translateX(0); }

.qa-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(122,0,223,0.05) 0%, rgba(6,147,227,0.05) 100%);
}
.qa-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.qa-title::before {
  content: '✦';
  color: var(--color-accent-from);
  font-size: 13px;
}
.qa-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.qa-atc-btn {
  background: none;
  border: 1.5px solid var(--color-accent-from);
  border-radius: 16px;
  color: var(--color-accent-from);
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: background 0.15s;
  font-family: inherit;
}
.qa-atc-btn:hover { background: rgba(122,0,223,0.06); }

.qa-info-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: #d0a0f0;
  font-size: 13px;
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  transition: color 0.15s, background 0.15s;
  padding: 0;
  margin-left: 2px;
  flex-shrink: 0;
  font-family: inherit;
}
.qa-info-btn:hover { color: var(--color-accent-from); background: rgba(0,0,0,0.05); }
.qa-info-popover {
  display: none;
  position: absolute;
  top: 52px; right: 14px; left: 14px;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0,0,0,0.09);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 11.5px; line-height: 1.5;
  color: #3c3c43;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  z-index: 300;
  animation: fadeIn 0.18s ease;
}
.qa-info-popover.visible { display: block; }
.qa-info-popover strong { color: var(--color-text); }

.qa-close {
  background: rgba(0,0,0,0.06);
  border: none;
  color: #3c3c43;
  cursor: pointer;
  font-size: 14px;
  width: 26px; height: 26px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s;
  padding: 0; line-height: 1;
}
.qa-close:hover { background: rgba(0,0,0,0.12); }

.ai-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.ai-tab {
  flex: 1;
  padding: 10px 16px;
  background: none;
  border: none;
  color: var(--color-muted);
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  font-family: inherit;
}
.ai-tab.active { color: var(--color-accent-from); border-bottom-color: var(--color-accent-from); }
.ai-tab:hover { color: var(--color-text); }
.ai-tab.active:hover { color: var(--color-accent-from); }

.topics-tab, .chat-tab { display: none; flex: 1; min-height: 0; }
.topics-tab.active { display: block; overflow-y: auto; }
.chat-tab.active { display: flex; flex-direction: column; overflow: hidden; }

.ai-content {
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.15) transparent;
  padding: 12px 14px;
}
.ai-content::-webkit-scrollbar { width: 4px; }
.ai-content::-webkit-scrollbar-track { background: transparent; }
.ai-content::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 2px; }

.topic-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 11px 13px;
  margin-bottom: 7px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.topic-card:hover { background: #f9f9fb; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.topic-card.active {
  border-color: rgba(122,0,223,0.4);
  background: rgba(122,0,223,0.05);
  box-shadow: 0 0 0 3px rgba(122,0,223,0.1);
}
.topic-timestamp { font-size: 11px; color: var(--color-accent-from); font-weight: 600; margin-bottom: 3px; font-variant-numeric: tabular-nums; }
.topic-title { font-size: 13px; font-weight: 600; color: var(--color-text); margin-bottom: 3px; line-height: 1.3; }
.topic-summary { font-size: 12px; color: var(--color-muted); line-height: 1.4; }

.chat-messages {
  flex: 1; min-height: 0; overflow-y: auto;
  padding: 12px 14px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.15) transparent;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 2px; }

.suggested-questions { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.suggested-chip {
  background: var(--color-surface);
  border: 1px solid rgba(0,0,0,0.1);
  color: #3c3c43;
  padding: 9px 13px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 12.5px;
  text-align: left;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  font-family: inherit;
}
.suggested-chip:hover {
  background: rgba(122,0,223,0.07);
  border-color: rgba(122,0,223,0.3);
  color: var(--color-accent-from);
}

.chat-message { margin-bottom: 10px; animation: fadeIn 0.22s ease; }
.chat-message.user { text-align: right; }
.chat-message.user .chat-bubble {
  background: linear-gradient(135deg, var(--color-accent-from) 0%, var(--color-accent-to) 100%);
  color: #fff;
  display: inline-block;
  text-align: left;
  border-radius: 18px 18px 5px 18px;
  box-shadow: 0 2px 10px rgba(122,0,223,0.35);
}
.chat-message.assistant .chat-bubble {
  background: var(--color-surface);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 18px 18px 18px 5px;
  color: var(--color-text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  display: inline-block;
  max-width: 95%;
}
.chat-bubble { padding: 10px 14px; font-size: 13.5px; line-height: 1.5; max-width: 95%; }

.answer-source-label {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 10.5px; font-weight: 500; margin-bottom: 6px; padding: 0; opacity: 0.7;
}
.answer-source-label.confirmed { color: var(--color-muted); }
.answer-source-label.video-based { color: var(--color-muted); }

.timestamp-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 8px;
  background: linear-gradient(135deg, rgba(122,0,223,0.1), rgba(6,147,227,0.1));
  border: 1px solid rgba(122,0,223,0.25);
  color: var(--color-accent-from);
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600;
  cursor: pointer; font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}
.timestamp-link:hover {
  background: linear-gradient(135deg, rgba(122,0,223,0.18), rgba(6,147,227,0.18));
  border-color: rgba(122,0,223,0.45);
}

.siri-indicator { display: flex; align-items: center; justify-content: center; padding: 6px 4px; }
.siri-orb {
  width: 96px; height: 22px; border-radius: 20px;
  background: linear-gradient(90deg, #bf5af2, #0a84ff, #30d158, #ff9f0a, #ff375f, #bf5af2);
  background-size: 300% 100%;
  animation: siri-orb 2.8s ease-in-out infinite;
  filter: blur(5px);
}

.chat-input-wrapper {
  padding: 10px 14px 12px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}
.question-input-row {
  display: flex; gap: 8px; align-items: center;
  background: rgba(0,0,0,0.04);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 22px;
  padding: 4px 5px 4px 14px;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.question-input-row:focus-within {
  border-color: rgba(122,0,223,0.5);
  box-shadow: 0 0 0 3px rgba(122,0,223,0.1);
  background: var(--color-surface);
}
.question-input {
  flex: 1; background: none; border: none; color: var(--color-text);
  font-size: 13px; outline: none; padding: 7px 0; font-family: inherit;
}
.question-input::placeholder { color: #aeb0b5; }
.send-button {
  background: linear-gradient(135deg, var(--color-accent-from) 0%, var(--color-accent-to) 100%);
  border: none; color: #fff;
  width: 30px; height: 30px; border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: filter 0.15s, transform 0.1s;
  flex-shrink: 0; padding: 0;
}
.send-button:hover  { filter: brightness(1.1); }
.send-button:active { transform: scale(0.93); }
.send-button:disabled { background: #c7c7cc; cursor: default; filter: none; }
.send-button svg { width: 14px; height: 14px; }

.fallback-card p { font-size: 13.5px; color: var(--color-text); line-height: 1.5; margin-bottom: 8px; }
.fallback-link {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--color-accent-from), var(--color-accent-to));
  color: white; text-decoration: none;
  border-radius: 20px; padding: 6px 12px; font-size: 12px; font-weight: 600;
}

.cart-cta-wrapper {
  margin-top: 12px; padding: 10px 12px;
  background: rgba(0,0,0,0.025);
  border: 1px dashed rgba(122,0,223,0.3);
  border-radius: 12px;
  animation: fadeIn 0.3s ease;
}
.cart-cta-label {
  font-size: 10.5px; font-weight: 600; color: var(--color-muted);
  letter-spacing: 0.3px; text-transform: uppercase;
  margin-bottom: 7px; text-align: center;
}
.cart-cta-btn {
  width: 100%; background: #fff;
  border: 1.5px solid var(--color-accent-from);
  border-radius: 20px; color: var(--color-accent-from);
  font-size: 12.5px; font-weight: 600;
  padding: 8px 14px;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, transform 0.1s;
  letter-spacing: -0.01em; font-family: inherit;
}
.cart-cta-btn:hover  { background: rgba(122,0,223,0.06); }
.cart-cta-btn:active { transform: scale(0.98); }
.cart-cta-btn.added { background: #1a7a35; border-color: #1a7a35; color: #fff; }

.powered-by {
  text-align: right;
  padding: 6px 12px 0;
  font-size: 9px;
  color: #888;
  letter-spacing: 0.2px;
}
.powered-by a { color: var(--color-accent-from); text-decoration: none; }