:root {
  color-scheme: light;
  --bg-a: #efe4d7;
  --bg-b: #d6e6ea;
  --card: #fffdf8;
  --card-border: #ddcfbc;
  --ink: #1f1f1b;
  --muted: #686158;
  --accent: #d36934;
  --accent-soft: #fce2cf;
  --incoming: #fff0dd;
  --outgoing: #d8f1e5;
  --match: #fff8b8;
  --match-active: #ffe16a;
  --shadow: 0 12px 30px rgba(41, 30, 17, 0.1);
  --search-suggestion-row-height: 70;
  font-family: Manrope, "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: radial-gradient(circle at 15% 10%, #fff6ea 0, transparent 33%),
    radial-gradient(circle at 85% 90%, #d4ecf2 0, transparent 35%),
    linear-gradient(135deg, var(--bg-a), var(--bg-b));
  color: var(--ink);
  -webkit-text-size-adjust: 100%;
}

.app-shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 1rem auto max(1.2rem, env(safe-area-inset-bottom));
  display: grid;
  gap: 0.9rem;
}

.card {
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 1.1rem 1.2rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.25rem, 1.6vw, 1.8rem);
}

.hero p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.controls {
  padding: 0.9rem 1rem 1rem;
  display: grid;
  gap: 0.75rem;
}

.upload-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.file-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.58rem 0.95rem;
  border-radius: 11px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease;
}

.file-button:hover {
  transform: translateY(-1px);
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

button,
input[type="search"] {
  font: inherit;
}

button {
  border: 1px solid #c5b39c;
  background: #fff;
  color: var(--ink);
  border-radius: 11px;
  min-height: 2.75rem;
  padding: 0.52rem 0.85rem;
  cursor: pointer;
}

button:hover:enabled {
  background: #fff8ef;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.status-row {
  display: grid;
  gap: 0.42rem;
}

.progress-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: #eedbc7;
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #d36934, #e3954e);
  transition: width 0.2s ease;
}

.load-status {
  color: var(--muted);
  font-size: 0.94rem;
}

.chat-meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.search {
  padding: 0.85rem 1rem 1rem;
  display: grid;
  gap: 0.55rem;
}

.search-label {
  font-weight: 700;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.48rem;
}

.search-row input {
  min-height: 2.75rem;
  padding: 0.52rem 0.68rem;
  border: 1px solid #c8b8a5;
  border-radius: 11px;
  background: #fff;
  min-width: 0;
}

.search-suggestions {
  position: relative;
  border: 1px solid #d6c7b3;
  border-radius: 12px;
  background: #fff8ee;
  max-height: min(42vh, 320px);
  max-height: min(42dvh, 320px);
  overflow: auto;
  padding: 0.26rem;
  -webkit-overflow-scrolling: touch;
}

.search-suggestions-canvas {
  position: relative;
  width: 100%;
  min-height: 100%;
}

.search-suggestion {
  position: absolute;
  left: 0;
  right: 0;
  height: calc(var(--search-suggestion-row-height) * 1px);
  min-height: 0;
  display: grid;
  gap: 0.22rem;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 9px;
  padding: 0.44rem 0.52rem;
}

.search-suggestion:hover:enabled {
  background: #fff1df;
}

.search-suggestion.active,
.search-suggestion:focus-visible {
  background: #ffe9cc;
  border-color: #e3c29d;
  outline: none;
}

.search-suggestion-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.74rem;
  color: #675f56;
}

.search-suggestion-meta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-suggestion-text {
  color: var(--ink);
  font-size: 0.88rem;
  line-height: 1.28;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-suggestion-text mark {
  background: var(--match-active);
  border-radius: 3px;
  padding: 0 1px;
}

.search-status {
  color: var(--muted);
  font-size: 0.91rem;
}

.chat {
  padding: 0.85rem;
}

.chat-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.48rem;
  margin-bottom: 0.65rem;
}

.chat-viewport {
  position: relative;
  height: min(74vh, 820px);
  height: min(74dvh, 820px);
  min-height: 340px;
  overflow: auto;
  overscroll-behavior: contain;
  border-radius: 12px;
  border: 1px solid #dbcbb7;
  background: linear-gradient(180deg, #fffbf4, #f7f2e8 45%, #f5f7f0);
  -webkit-overflow-scrolling: touch;
}

.chat-canvas {
  position: relative;
  width: 100%;
  min-height: 100%;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  padding: 1rem;
  pointer-events: none;
}

.message-row {
  position: absolute;
  left: 0;
  right: 0;
  display: flex;
  padding: 0 0.7rem 0.5rem;
}

.message-row.incoming {
  justify-content: flex-start;
}

.message-row.outgoing {
  justify-content: flex-end;
}

.message-bubble {
  width: fit-content;
  max-width: min(72ch, 75%);
  border-radius: 16px;
  padding: 0.52rem 0.66rem 0.56rem;
  border: 1px solid #d2c2ad;
  box-shadow: 0 4px 10px rgba(40, 27, 15, 0.06);
}

.message-row.incoming .message-bubble {
  background: var(--incoming);
}

.message-row.outgoing .message-bubble {
  background: var(--outgoing);
}

.message-row.match .message-bubble {
  outline: 2px solid var(--match);
}

.message-row.active-match .message-bubble {
  outline: 2px solid var(--match-active);
}

.message-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: 0.76rem;
  color: #615a53;
  margin-bottom: 0.28rem;
}

.message-text {
  line-height: 1.35;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-text mark {
  background: var(--match-active);
  border-radius: 3px;
  padding: 0 1px;
}

@media (max-width: 720px) {
  .app-shell {
    width: calc(100% - 0.65rem);
    margin-top: 0.4rem;
    margin-bottom: max(0.5rem, env(safe-area-inset-bottom));
    gap: 0.62rem;
  }

  .card {
    border-radius: 14px;
    box-shadow: 0 8px 20px rgba(41, 30, 17, 0.09);
  }

  .hero,
  .controls,
  .search {
    padding-inline: 0.8rem;
  }

  .upload-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .upload-row > * {
    width: 100%;
  }

  .file-button,
  button {
    width: 100%;
  }

  .search-row {
    grid-template-columns: 1fr 1fr;
  }

  .search-row input {
    grid-column: 1 / -1;
    font-size: 16px;
  }

  .search-suggestions {
    max-height: min(34vh, 260px);
    max-height: min(34dvh, 260px);
  }

  :root {
    --search-suggestion-row-height: 66;
  }

  .search-suggestion {
    padding: 0.4rem 0.48rem;
  }

  .search-suggestion-meta {
    font-size: 0.71rem;
  }

  .search-suggestion-text {
    font-size: 0.84rem;
  }

  .chat {
    padding: 0.55rem;
  }

  .chat-toolbar {
    justify-content: stretch;
    margin-bottom: 0.55rem;
  }

  .chat-toolbar button {
    flex: 1 1 0;
  }

  .chat-viewport {
    height: min(68vh, 640px);
    height: min(68dvh, 640px);
    min-height: 50vh;
    min-height: 50dvh;
  }

  .message-row {
    padding-left: 0.35rem;
    padding-right: 0.35rem;
  }

  .message-bubble {
    max-width: 88%;
  }

  .message-meta {
    flex-wrap: wrap;
    gap: 0.24rem 0.6rem;
  }

  .chat-meta,
  .load-status,
  .search-status {
    font-size: 0.88rem;
  }
}

@media (max-width: 420px) {
  .search-row {
    grid-template-columns: 1fr;
  }

  .search-row input {
    grid-column: auto;
  }

  .message-bubble {
    max-width: 92%;
  }
}