:root {
  --bg: #f2f6f1;
  --bg-elev: #ffffff;
  --bg-soft: #e7efe5;
  --line: #d0ddd0;
  --text: #152816;
  --muted: #5c7260;
  --forest: #1f4d2e;
  --forest-mid: #2d6a40;
  --leaf: #4a8f5c;
  --warn: #8a6a20;
  --radius: 14px;
  --radius-sm: 10px;
  --font: "Inter", system-ui, sans-serif;
  --display: "Geist Sans", "Geist", Inter, system-ui, sans-serif;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
  height: 100%;
}

body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--text);
  background:
    radial-gradient(900px 420px at 0% -10%, rgba(74, 143, 92, 0.12), transparent 55%),
    radial-gradient(700px 380px at 100% 0%, rgba(31, 77, 46, 0.08), transparent 50%),
    var(--bg);
}

.app {
  max-width: 1120px;
  margin: 0 auto;
  height: 100%;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-bottom: var(--safe-bottom);
}

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem 0.85rem;
  flex-shrink: 0;
  background: transparent;
}

.top h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.35rem, 3.5vw, 1.7rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.2;
  color: var(--forest);
}

.top-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn {
  font: inherit;
  font-size: 0.86rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 0.55rem 1rem;
  cursor: pointer;
  background: var(--bg-elev);
  color: var(--text);
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
}

.btn:hover {
  border-color: var(--leaf);
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.55;
  cursor: wait;
}

.btn.primary {
  background: var(--forest);
  border-color: var(--forest);
  color: #f4f7f2;
  font-weight: 500;
}

.btn.primary:hover:not(:disabled) {
  background: var(--forest-mid);
  border-color: var(--forest-mid);
}

.btn.ghost {
  background: transparent;
}

.layout {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) min(340px, 34%);
  gap: 1.15rem;
  padding: 0 1.5rem 1.15rem;
  align-items: stretch;
  min-height: 0;
  overflow: hidden;
}

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.15rem 1.1rem;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(31, 77, 46, 0.03);
}

.chat-panel {
  padding: 0.85rem 0.85rem 0.9rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.98)),
    var(--bg-elev);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.panel-head h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--forest);
}

.muted {
  color: var(--muted);
  margin: 0;
  font-size: 0.85rem;
}

.chat-log {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  padding: 0.85rem 0.65rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  -webkit-overflow-scrolling: touch;
}

.chat-msg {
  display: flex;
  max-width: 66.666%;
  flex-shrink: 0;
  animation: rise 0.22s ease-out;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.chat-msg.user {
  align-self: flex-end;
}

.chat-msg.assistant,
.chat-msg.system {
  align-self: flex-start;
}

.chat-msg .bubble {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font);
  font-size: 0.95rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
  padding: 0.9rem 1.05rem;
  border-radius: 18px;
}

.chat-msg.user .bubble {
  background: var(--forest);
  color: #f5faf5;
  border-bottom-right-radius: 6px;
  box-shadow: 0 8px 20px rgba(31, 77, 46, 0.14);
}

.chat-msg.assistant .bubble {
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid transparent;
  border-bottom-left-radius: 6px;
}

.chat-msg.system .bubble {
  background: transparent;
  color: var(--muted);
  font-size: 0.86rem;
  padding: 0.35rem 0.15rem;
  border: none;
  line-height: 1.55;
}

.chat-form {
  flex-shrink: 0;
  padding: 0.35rem 0.4rem 0.2rem;
}

.composer {
  display: flex;
  gap: 0.55rem;
  align-items: flex-end;
  padding: 0.45rem 0.45rem 0.45rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fafcfa;
  box-shadow: 0 10px 28px rgba(31, 77, 46, 0.06);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.composer:focus-within {
  border-color: var(--leaf);
  box-shadow: 0 12px 30px rgba(31, 77, 46, 0.1);
}

.composer textarea {
  flex: 1;
  width: 100%;
  resize: none;
  min-height: 44px;
  max-height: 120px;
  padding: 0.55rem 0.15rem;
  border: none;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.5;
  letter-spacing: 0.01em;
}

.composer textarea:focus {
  outline: none;
}

.composer textarea::placeholder {
  color: #8aa08c;
}

.btn.send {
  flex-shrink: 0;
  min-width: 4.5rem;
  padding: 0.65rem 1.05rem;
}

.pkg-banner {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--forest);
  padding: 0.75rem 0.85rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.88rem;
  line-height: 1.55;
  letter-spacing: 0.01em;
  margin: 0 0 0.95rem;
  flex-shrink: 0;
}

.ready-pill {
  flex-shrink: 0;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #14532d;
  background: #dcfce7;
  border: 1px solid #86efac;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
}

.mode-line {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.suggestion-line {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--text);
  padding: 0.55rem 0.7rem;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--line);
}

.brief-box {
  margin: 0 0 0.85rem;
  flex-shrink: 0;
}

.brief-box .mini {
  margin-top: 0;
}

.brief-text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text);
  white-space: pre-wrap;
}

.mini {
  margin: 1rem 0 0.45rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
  flex-shrink: 0;
}

.quote-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.quote-lines,
.overlap-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.88rem;
  line-height: 1.5;
}

.quote-lines li {
  display: flex;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--line);
}

.overlap-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--line);
  line-height: 1.5;
}

.credit-id {
  display: inline-block;
  font-size: 0.68rem;
  font-family: ui-monospace, Menlo, monospace;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.08rem 0.35rem;
  margin-right: 0.3rem;
  color: var(--forest-mid);
}

.neg {
  color: var(--warn);
}

.totals {
  flex-shrink: 0;
  margin-top: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.totals > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  font-size: 0.92rem;
}

.totals dt {
  margin: 0;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.totals dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.totals .final {
  margin-top: 0.45rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--line);
}

.totals .final dd {
  color: var(--forest);
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Desktop quote fills height; middle scrolls */
.quote-panel {
  height: 100%;
}

/* Mobile: locked viewport — chat scrolls inside, quote peeks below */
@media (max-width: 860px) {
  .top {
    padding: 0.85rem 1rem 0.65rem;
  }

  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) minmax(9.5rem, 32%);
    gap: 0.75rem;
    padding: 0 0.85rem 0.85rem;
  }

  .chat-panel {
    order: 1;
    min-height: 0;
    height: auto;
  }

  .quote-panel {
    order: 2;
    min-height: 0;
  }

  .chat-msg .bubble {
    font-size: 0.92rem;
    padding: 0.85rem 0.95rem;
  }
}

@media (max-width: 480px) {
  .top h1 {
    font-size: 1.25rem;
  }

  .btn {
    padding: 0.5rem 0.85rem;
    font-size: 0.82rem;
  }

  .composer {
    padding-left: 0.7rem;
  }

  .btn.send {
    min-width: 0;
  }

  .layout {
    grid-template-rows: minmax(0, 1fr) minmax(8.5rem, 30%);
  }
}