:root {
  --black: #10120f;
  --panel: #181c16;
  --panel-soft: #20251d;
  --ink: #edeee7;
  --muted: #b4b6ab;
  --line: #ffffff29;
  --accent: #c4cab5;
  --accent-dark: #20271b;
  --danger: #e3a9a0;
  --serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  background:
    radial-gradient(circle at 8% 80%, #293322 0, transparent 32rem),
    var(--black);
  color: var(--ink);
  font: 16px/1.55 Arial, Helvetica, sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(90deg, transparent 49.9%, #ffffff08 50%, transparent 50.1%);
  content: "";
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; cursor: pointer; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 18px;
  z-index: 20;
  padding: 12px 16px;
  background: var(--ink);
  color: var(--black);
}

.skip-link:focus { top: 18px; }

.chat-header {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 4.5%;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: .13em;
  white-space: nowrap;
}

.brand span {
  font-size: 18px;
  font-style: italic;
  letter-spacing: 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--muted);
  font-size: 13px;
}

.back-link span { font-size: 19px; }

.chat-layout {
  width: min(1540px, 100%);
  min-height: calc(100dvh - 170px);
  margin: 0 auto;
  padding: clamp(42px, 6vw, 92px) 5%;
  display: grid;
  grid-template-columns: minmax(280px, .74fr) minmax(560px, 1.26fr);
  gap: clamp(42px, 7vw, 120px);
  align-items: center;
}

.chat-intro { max-width: 560px; }

.eyebrow,
.card-heading > span,
.conversation-label {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 34px;
  font-size: clamp(58px, 6.4vw, 104px);
  font-weight: 400;
  line-height: .98;
  letter-spacing: -.065em;
}

h1 em {
  color: var(--accent);
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -.04em;
}

.intro-copy {
  max-width: 470px;
  margin-bottom: 44px;
  color: var(--muted);
  font-size: 15px;
}

.designer-card {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 4px 16px;
  align-items: center;
  max-width: 440px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.designer-mark {
  grid-row: span 2;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: 1px solid #ffffff55;
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 25px;
}

.designer-card div { display: flex; flex-direction: column; }
.designer-card strong { font-size: 15px; font-weight: 500; }
.designer-card div span { color: var(--muted); font-size: 11px; }
.designer-card a {
  grid-column: 2;
  width: fit-content;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 20px;
}

.chat-card {
  position: relative;
  min-width: 0;
  min-height: 630px;
  border: 1px solid var(--line);
  background: rgba(24, 28, 22, .94);
  box-shadow: 0 32px 90px #00000040;
}

.connection-line {
  min-height: 46px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 clamp(22px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.connection-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #a5ad98;
  box-shadow: 0 0 0 4px #a5ad9815;
}

.connection-dot.offline { background: var(--danger); box-shadow: 0 0 0 4px #e3a9a015; }

.start-view { padding: clamp(28px, 4vw, 52px); }

.card-heading { margin-bottom: 34px; }
.card-heading > span { display: block; margin-bottom: 16px; }
.card-heading h2 {
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: clamp(34px, 3.2vw, 49px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.035em;
}
.card-heading p { max-width: 590px; margin: 0; color: var(--muted); font-size: 13px; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.field { position: relative; display: flex; flex-direction: column; gap: 8px; }
.field > span:first-child { font-size: 12px; }
.field input,
.field textarea,
.reply-form textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid #ffffff45;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  outline: 0;
}

.field input { height: 48px; padding: 4px 0; }
.field textarea { min-height: 118px; padding: 14px 0 24px; resize: vertical; }
.field input::placeholder,
.field textarea::placeholder,
.reply-form textarea::placeholder { color: #8e9287; opacity: 1; }
.field input:focus,
.field textarea:focus,
.reply-form textarea:focus { border-bottom-color: var(--accent); }
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-bottom-color: var(--danger); }

.field-message { margin-top: 28px; }
.field-hint { min-height: 18px; color: #8e9287; font-size: 10px; }
.field-error { min-height: 18px; color: var(--danger); font-size: 11px; }
.counter { position: absolute; right: 0; bottom: 24px; color: #8e9287; font-size: 9px; }

.website-field {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.consent {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 11px;
  align-items: start;
  margin-top: 18px;
  color: var(--muted);
  cursor: pointer;
  font-size: 11px;
}

.consent input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.consent-box {
  width: 19px;
  height: 19px;
  display: grid;
  place-items: center;
  border: 1px solid #ffffff55;
}

.consent input:checked + .consent-box::after { content: "✓"; color: var(--accent); font-size: 14px; }
.consent input:focus-visible + .consent-box { outline: 2px solid var(--accent); outline-offset: 4px; }
.consent-error { display: block; margin-left: 31px; }

.form-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-top: 24px;
}

.form-footer p { max-width: 290px; margin: 0; color: #8e9287; font-size: 9px; }

.primary-button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 20px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-dark);
  transition: transform .2s, background .2s;
}

.primary-button:hover:not(:disabled) { transform: translateY(-2px); background: #e2e6d8; }
.primary-button:disabled, .send-button:disabled { cursor: wait; opacity: .55; }
.form-status { min-height: 20px; margin: 14px 0 -20px; color: var(--danger); font-size: 11px; }

.conversation-view { height: calc(100dvh - 270px); min-height: 584px; max-height: 760px; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }
.conversation-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 25px clamp(22px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
}
.conversation-label { display: block; margin: 0 0 7px; }
.conversation-header h2 { margin: 0; font-family: var(--serif); font-size: 24px; font-weight: 400; }
.conversation-header h2 span { color: var(--accent); }
.visitor-summary { display: flex; flex-direction: column; align-items: flex-end; font-size: 11px; }
.visitor-summary strong { font-weight: 500; }
.visitor-summary span { color: var(--muted); }

.messages {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 28px clamp(18px, 4vw, 42px);
  scrollbar-width: thin;
  scrollbar-color: #6f7568 transparent;
}
.messages-loading, .messages-empty { padding: 50px 10%; color: var(--muted); text-align: center; font-size: 12px; }
.message { max-width: min(78%, 560px); margin-bottom: 20px; }
.message.visitor { margin-left: auto; }
.message-bubble { padding: 14px 17px; border: 1px solid var(--line); background: var(--panel-soft); }
.message.visitor .message-bubble { background: #dce1cf; color: #252a20; border-color: #dce1cf; }
.message p { margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; font-size: 14px; }
.message-meta { display: flex; gap: 9px; margin-top: 6px; color: #8e9287; font-size: 9px; }
.message.visitor .message-meta { justify-content: flex-end; }
.message.admin .message-meta { color: var(--muted); }

.reply-form {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px;
  gap: 14px;
  align-items: end;
  padding: 18px clamp(18px, 4vw, 42px) 22px;
  border-top: 1px solid var(--line);
}
.reply-form textarea { min-height: 48px; max-height: 140px; padding: 13px 0; resize: none; }
.send-button {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-dark);
  font-size: 23px;
}
.reply-status { position: absolute; right: 42px; bottom: 3px; margin: 0; color: var(--danger); font-size: 9px; }

.chat-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 25px 4.5%;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 1050px) {
  .chat-layout { grid-template-columns: 1fr; align-items: start; }
  .chat-intro { max-width: 760px; }
  h1 { max-width: 800px; font-size: clamp(58px, 10vw, 92px); }
  .intro-copy { margin-bottom: 30px; }
  .chat-card { width: 100%; }
  .conversation-view { height: min(760px, calc(100dvh - 165px)); }
}

@media (max-width: 650px) {
  body::before { display: none; }
  .chat-header { min-height: 78px; padding: 0 max(20px, env(safe-area-inset-right)) 0 max(20px, env(safe-area-inset-left)); }
  .brand { gap: 8px; font-size: 20px; letter-spacing: .09em; }
  .brand span { font-size: 15px; }
  .back-link { font-size: 12px; }
  .chat-layout { min-height: 0; padding: 36px 0 0; gap: 34px; }
  .chat-intro { padding: 0 max(20px, env(safe-area-inset-right)) 0 max(20px, env(safe-area-inset-left)); }
  .eyebrow { margin-bottom: 17px; }
  h1 { margin-bottom: 23px; font-size: clamp(49px, 15.5vw, 67px); }
  .intro-copy { font-size: 14px; }
  .designer-card { display: none; }
  .chat-card { min-height: 0; border-right: 0; border-left: 0; box-shadow: none; }
  .connection-line { padding: 0 20px; }
  .start-view { padding: 27px max(20px, env(safe-area-inset-right)) 36px max(20px, env(safe-area-inset-left)); }
  .card-heading { margin-bottom: 28px; }
  .card-heading h2 { font-size: 35px; }
  .field-row { grid-template-columns: 1fr; gap: 20px; }
  .field-message { margin-top: 20px; }
  .consent { font-size: 10px; }
  .form-footer { align-items: stretch; flex-direction: column; }
  .form-footer p { order: 2; }
  .primary-button { width: 100%; }
  .form-status { margin-bottom: 0; }
  .conversation-view { height: calc(100dvh - 124px); min-height: 540px; max-height: none; }
  .conversation-header { align-items: flex-start; padding: 20px; }
  .conversation-header h2 { font-size: 20px; }
  .visitor-summary { max-width: 42%; text-align: right; }
  .messages { padding: 24px 17px; }
  .message { max-width: 88%; }
  .reply-form { padding: 14px max(16px, env(safe-area-inset-right)) max(20px, calc(12px + env(safe-area-inset-bottom))) max(16px, env(safe-area-inset-left)); }
  .reply-status { right: 70px; bottom: 3px; }
  .chat-footer { display: none; }
}

@media (max-width: 370px) {
  .back-link { font-size: 0; }
  .back-link span { font-size: 23px; }
  .conversation-header { gap: 12px; }
  .visitor-summary { font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}