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

:root {
  --bg:          #f5f5f3;
  --surface:     #ffffff;
  --border:      #e5e5e3;
  --text:        #1a1a18;
  --text-2:      #6b6b68;
  --text-3:      #9a9a97;
  --accent:      #1a1a18;
  --user-bubble: #1a1a18;
  --user-text:   #ffffff;
  --radius-msg:  18px;
  --shadow-card: 0 1px 4px rgba(0,0,0,0.08), 0 2px 12px rgba(0,0,0,0.04);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}


/* ═══════════════════════════
   LANDING PAGE
══════════════════════════ */

.landing {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  background: var(--surface);
}

/* Nav */
.landing-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 48px;
  border-bottom: 1px solid var(--border);
}

.landing-logo {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text);
}

.landing-nav-right {
  font-size: 12px;
  color: var(--text-2);
  letter-spacing: 0.5px;
}

/* Body */
.landing-body {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 64px 48px 40px;
  align-items: center;
}

/* Left copy */
.landing-left {
  padding-right: 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.landing-eyebrow {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
}

.landing-headline {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--text);
}

.landing-headline em {
  font-style: italic;
  font-weight: 300;
}

.landing-sub {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 380px;
}

/* Demo login */
.demo-login {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--bg);
  border-radius: 14px;
  border: 1px solid var(--border);
  max-width: 360px;
}

.demo-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.3px;
}

.demo-label svg { width: 13px; height: 13px; }

.demo-select {
  appearance: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 14px;
  font-size: 13.5px;
  font-family: inherit;
  color: var(--text);
  cursor: pointer;
  outline: none;
  width: 100%;
  transition: border-color 0.2s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236b6b68'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.17l3.71-3.94a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

.demo-select:focus { border-color: var(--text); }

.start-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 9px;
  padding: 12px 20px;
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  letter-spacing: 0.2px;
}

.start-btn svg { width: 16px; height: 16px; }
.start-btn:hover:not(:disabled) { opacity: 0.85; }
.start-btn:active:not(:disabled) { transform: scale(0.98); }
.start-btn:disabled { opacity: 0.35; cursor: not-allowed; }

.demo-hint {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--text-2);
  line-height: 1.5;
}
.demo-hint a { color: var(--text-2); text-decoration: underline; }
.demo-hint a:hover { color: var(--text); }

/* Mosaic */
.landing-mosaic {
  display: flex;
  gap: 12px;
  height: 520px;
  overflow: hidden;
}

.mosaic-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.mosaic-col-b { margin-top: 36px; }

.mosaic-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: #f0efed;
  flex-shrink: 0;
}

.mosaic-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.4s ease;
}

.mosaic-card:hover img { transform: scale(1.03); }

.mosaic-tall { flex: 3; }
.mosaic-short { flex: 2; }

.mosaic-label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.3px;
}

/* Footer */
.landing-footer {
  display: flex;
  justify-content: space-between;
  padding: 18px 48px;
  border-top: 1px solid var(--border);
  font-size: 11.5px;
  color: var(--text-3);
}

/* Responsive */
@media (max-width: 768px) {
  .landing-nav { padding: 18px 24px; }
  .landing-body { grid-template-columns: 1fr; padding: 40px 24px 32px; }
  .landing-left { padding-right: 0; }
  .landing-mosaic { display: none; }
  .landing-footer { flex-direction: column; gap: 6px; padding: 16px 24px; align-items: center; text-align: center; }
}


/* ═══════════════════════════
   CHAT PAGE
══════════════════════════ */

/* Mobile-first: full screen */
.chat-page {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  width: 100%;
  background: var(--surface);
  overflow: hidden;
}

/* Desktop: centred card */
@media (min-width: 600px) and (min-height: 600px) {
  body.in-chat {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
  }

  .chat-page {
    max-width: 680px;
    height: min(100dvh, 860px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.06);
  }
}

/* Chat header */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.logo-btn {
  background: none;
  border: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--text);
  cursor: pointer;
  padding: 4px 0;
  font-family: inherit;
  transition: opacity 0.15s;
}

.logo-btn:hover { opacity: 0.55; }

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

.cart-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 7px 12px;
  font-family: inherit;
  font-size: 12px;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
}

.cart-btn svg { width: 16px; height: 16px; }
.cart-btn:hover { background: #ebebea; }

.cart-badge {
  background: var(--text);
  color: white;
  border-radius: 10px;
  min-width: 18px;
  padding: 1px 5px;
  font-size: 10px;
  font-weight: 700;
  text-align: center;
  line-height: 1.6;
}

/* Agent bar */
.agent-bar {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.agent-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--text);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.agent-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.agent-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
}

.agent-role {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 1px;
}

.agent-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-3);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
}

/* Chat area */
.chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px 16px;
  background: var(--bg);
  scroll-behavior: smooth;
}

.chat-area::-webkit-scrollbar { width: 4px; }
.chat-area::-webkit-scrollbar-track { background: transparent; }
.chat-area::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 2px; }

/* Message groups */
.message-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.message-group.user { align-items: flex-end; }
.message-group.assistant { align-items: flex-start; }

/* User bubble */
.user-bubble {
  background: var(--user-bubble);
  color: var(--user-text);
  border-radius: var(--radius-msg);
  border-bottom-right-radius: 4px;
  padding: 11px 16px;
  font-size: 14px;
  line-height: 1.55;
  max-width: 78%;
  word-break: break-word;
  white-space: pre-wrap;
}

/* Agent message bubble */
.agent-message-text {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-msg);
  border-bottom-left-radius: 4px;
  padding: 11px 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
  max-width: 82%;
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow: var(--shadow-card);
}

.agent-attribution {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 5px;
}

/* Product cards */
.product-cards {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
  max-width: 82%;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  width: 152px;
  flex-shrink: 0;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s, box-shadow 0.18s;
}

.product-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.product-card img {
  width: 100%;
  height: 132px;
  object-fit: cover;
  object-position: top center;
  display: block;
  background: #f0efed;
}

.product-card-info {
  padding: 10px 11px 11px;
}

.product-card-name {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
}

.product-card-meta {
  font-size: 11px;
  color: var(--text-3);
  margin-top: 2px;
  margin-bottom: 9px;
}

.select-btn {
  width: 100%;
  background: var(--text);
  color: white;
  border: none;
  padding: 7px 0;
  border-radius: 7px;
  font-size: 11.5px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s;
  letter-spacing: 0.1px;
}

.select-btn:hover { opacity: 0.75; }

/* Status banners */
.escalation-banner {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 10px;
  padding: 11px 13px;
  font-size: 13px;
  color: #92400e;
  line-height: 1.5;
  margin-top: 10px;
  max-width: 82%;
}

.escalation-banner svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 1px; }

/* Typing indicator */
.typing-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.typing-dots {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 14px 18px;
  background: var(--surface);
  border-radius: 18px;
  border-bottom-left-radius: 4px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--text-3);
  border-radius: 50%;
  animation: bounce 1.3s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-5px); opacity: 1; }
}

/* Input area */
.input-area {
  padding: 12px 16px 16px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.input-wrapper {
  flex: 1;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  padding: 10px 14px;
  transition: border-color 0.2s;
}

.input-wrapper:focus-within {
  border-color: #aaa;
  background: var(--surface);
}

.message-input {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  max-height: 120px;
  overflow-y: auto;
}

.message-input::placeholder { color: var(--text-3); }
.message-input:disabled { cursor: not-allowed; }

.send-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.15s, transform 0.1s;
}

.send-btn svg { width: 15px; height: 15px; }
.send-btn:hover:not(:disabled) { opacity: 0.75; }
.send-btn:active:not(:disabled) { transform: scale(0.93); }
.send-btn:disabled { background: #d1d1cf; cursor: not-allowed; }

.input-footer {
  text-align: center;
  font-size: 10.5px;
  color: var(--text-3);
  margin-top: 8px;
}

/* Cart panel */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.25);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.cart-overlay.active { opacity: 1; pointer-events: auto; }

.cart-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  height: 100dvh;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 100;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -8px 0 32px rgba(0,0,0,0.08);
}

.cart-panel.open { transform: translateX(0); }

.cart-panel-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.cart-panel-title { font-size: 15px; font-weight: 600; color: var(--text); }

.close-cart-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s;
}

.close-cart-btn svg { width: 13px; height: 13px; }
.close-cart-btn:hover { background: #ebebea; }

.cart-panel-body { flex: 1; overflow-y: auto; padding: 16px 20px; }

.empty-cart { text-align: center; font-size: 13px; color: var(--text-3); padding: 48px 0; }

.cart-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.cart-item:last-child { border-bottom: none; }

.cart-item-img {
  width: 52px;
  height: 52px;
  object-fit: cover;
  object-position: top center;
  border-radius: 8px;
  background: var(--bg);
  flex-shrink: 0;
}

.cart-item-name { font-size: 13px; font-weight: 500; color: var(--text); }
.cart-item-meta { font-size: 11.5px; color: var(--text-2); margin-top: 2px; }


/* ═══════════════════════════
   MOBILE OVERRIDES (< 600px)
══════════════════════════ */
@media (max-width: 599px) {

  /* Landing */
  .landing-nav { padding: 16px 20px; }
  .landing-body { padding: 32px 20px 24px; }
  .landing-headline { letter-spacing: -1px; }
  .landing-sub { font-size: 14px; }
  .demo-login { max-width: 100%; }
  .landing-footer { flex-direction: column; gap: 4px; padding: 14px 20px; align-items: center; text-align: center; }

  /* Chat header */
  .chat-header { padding: 12px 16px; }

  /* Agent bar: compact — hide role text to save vertical space */
  .agent-bar { padding: 8px 16px; gap: 8px; }
  .agent-avatar { width: 28px; height: 28px; font-size: 11px; }
  .agent-role { display: none; }
  .agent-status { font-size: 10px; }

  /* Chat area: tighter padding */
  .chat-area { padding: 14px 14px 10px; }

  /* Messages: wider bubbles on narrow screens */
  .user-bubble { max-width: 88%; }
  .agent-message-text { max-width: 92%; }
  .cart-banner,
  .escalation-banner { max-width: 92%; }

  /* Product cards: horizontal scroll row instead of wrap */
  .product-cards {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    max-width: 92%;
  }
  .product-cards::-webkit-scrollbar { display: none; }
  .product-card { width: 136px; flex-shrink: 0; }
  .product-card img { height: 116px; }

  /* Input area */
  .input-area { padding: 10px 12px 14px; }
  /* Prevent iOS Safari from zooming in when the textarea is focused */
  .message-input { font-size: 16px; }
  /* Larger send button touch target */
  .send-btn { width: 44px; height: 44px; }

  /* Cart panel: full width on phone */
  .cart-panel { width: 100%; border-left: none; }

  /* Cart button: hide label text, show icon + count only */
  .cart-btn { padding: 7px 10px; }
}