/* Claims support chat UI. No external resources; served under CSP default-src 'self'. */

:root {
  color-scheme: light;

  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f3f6f8;
  --ink: #17242b;
  --ink-2: #56656c;
  --line: #e1e7ea;
  --line-strong: #93a7a5;
  --brand: #1c5a55;
  --brand-strong: #13433f;
  --brand-ink: #ffffff;
  --brand-soft: #d8e9e6;
  --ok: #1b6440;
  --ok-soft: #dcefe3;
  --warn: #6f4500;
  --warn-soft: #fbefd5;
  --warn-line: #d9ac57;
  --danger: #9f2219;
  --danger-soft: #fbe5e2;
  --focus: #0b57d0;

  --font-ui: "Avenir Next", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-doc: "Iowan Old Style", "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;

  --gutter: 16px;
  --radius-bubble: 16px;
  --radius-control: 10px;
  --shell-max: 48rem;
  --marker: 1.75rem;
}

/* ---------- base ---------- */

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

[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.5;
}

h1,
p {
  margin: 0;
}

button,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 10;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-control);
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
}

.skip-link:focus {
  top: 0.5rem;
}

/* ---------- shell ---------- */

.shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: 100vh;
  height: 100dvh;
  max-width: var(--shell-max);
  margin: 0 auto;
  background: var(--surface);
  border-inline: 1px solid var(--line);
  box-shadow: 0 0 0 1px rgba(23, 36, 43, 0.02), 0 8px 32px rgba(23, 36, 43, 0.06);
}

/* ---------- masthead ---------- */

.masthead {
  padding: 0.875rem var(--gutter) 0.75rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.masthead__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.masthead__title {
  min-width: 0;
}

.masthead h1 {
  font-family: var(--font-doc);
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.005em;
}

.masthead__sub {
  margin-top: 0.125rem;
  color: var(--ink-2);
  font-size: 0.875rem;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.625rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  min-height: 1.75rem;
  padding: 0.125rem 0.625rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.3;
}

.badge--ok {
  border-color: transparent;
  background: var(--ok-soft);
  color: var(--ok);
}

.badge__icon {
  flex: none;
}

/* ---------- progress stepper ---------- */

.progress {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0.875rem 0 0;
  padding: 0;
  list-style: none;
}

.progress__step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3125rem;
  min-width: 0;
  padding: 0 0.125rem;
  text-align: center;
}

/* connector from the previous marker to this one */
.progress__step + .progress__step::before {
  content: "";
  position: absolute;
  top: calc(var(--marker) / 2 - 1px);
  right: calc(50% + var(--marker) / 2 + 0.25rem);
  left: calc(-50% + var(--marker) / 2 + 0.25rem);
  height: 2px;
  border-radius: 2px;
  background: var(--line);
}

.progress__step.is-done::before,
.progress__step.is-active::before {
  background: var(--brand);
}

.progress__marker {
  display: grid;
  place-items: center;
  width: var(--marker);
  height: var(--marker);
  border: 2px solid var(--line-strong);
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink-2);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1;
}

.progress__label {
  max-width: 100%;
  color: var(--ink-2);
  font-size: 0.8125rem;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.progress__step.is-done .progress__marker {
  border-color: var(--brand);
  background: var(--brand);
  color: var(--brand-ink);
}

.progress__step.is-active .progress__marker {
  border-color: var(--brand);
  background: var(--brand-soft);
  color: var(--brand-strong);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.progress__step.is-active .progress__label {
  color: var(--ink);
  font-weight: 700;
}

.progress__step.is-done .progress__label {
  color: var(--ink);
}

/* ---------- conversation ---------- */

.conversation {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--bg);
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0.75rem var(--gutter) 0;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--warn-line);
  border-radius: var(--radius-control);
  background: var(--warn-soft);
  color: var(--warn);
  font-size: 0.9375rem;
}

.notice__icon {
  flex: none;
  margin-top: 0.1875rem;
}

.transcript-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1rem var(--gutter) 0.75rem;
}

.transcript-scroll:focus-visible {
  outline-offset: -3px;
}

.transcript {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.msg {
  display: flex;
  flex-direction: column;
  max-width: min(85%, 36rem);
  min-width: 0;
}

.msg__text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.msg__bubble {
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-bubble);
}

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

.msg--assistant .msg__bubble {
  border: 1px solid var(--line);
  border-top-left-radius: 4px;
  background: var(--surface-2);
}

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

.msg--user .msg__bubble {
  border-top-right-radius: 4px;
  background: var(--brand);
  color: var(--brand-ink);
}

.msg__meta {
  margin-top: 0.25rem;
  color: var(--ink-2);
  font-size: 0.8125rem;
}

.msg--user.is-sending .msg__bubble {
  opacity: 0.8;
}

.msg--user.is-failed .msg__bubble {
  border: 2px dashed var(--danger);
  background: var(--danger-soft);
  color: var(--ink);
}

.msg--user.is-failed .msg__meta {
  color: var(--danger);
  font-weight: 600;
}

/* The response was lost: the server may or may not have taken this message. */
.msg--user.is-unconfirmed .msg__bubble {
  border: 2px dashed var(--warn-line);
  background: var(--warn-soft);
  color: var(--ink);
}

.msg--user.is-unconfirmed .msg__meta {
  color: var(--warn);
  font-weight: 600;
}

/* The email summary reads as a document, not a chat line. */
.msg--email_offer {
  max-width: min(100%, 38rem);
}

.msg--email_offer .msg__bubble {
  padding: 1rem 1.125rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  border-radius: 6px;
  background: var(--surface);
  font-family: var(--font-doc);
  font-size: 1.03125rem;
  line-height: 1.6;
}

.msg--notice {
  align-self: center;
  max-width: min(100%, 34rem);
}

.msg--notice .msg__bubble {
  padding: 0.5rem 0.875rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-control);
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 0.9375rem;
  text-align: center;
}

.email-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.625rem;
}

/* ---------- typing indicator ---------- */

.typing {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-bubble);
  border-top-left-radius: 4px;
  background: var(--surface);
  color: var(--ink-2);
  font-size: 0.875rem;
}

.typing__dots {
  display: inline-flex;
  gap: 0.25rem;
}

.typing__dots span {
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.35;
  animation: typing-pulse 1.2s ease-in-out infinite;
}

.typing__dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing__dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing-pulse {
  0%, 60%, 100% { opacity: 0.3; }
  30% { opacity: 1; }
}

/* ---------- composer ---------- */

.composer-area {
  padding: 0.75rem var(--gutter) calc(0.75rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-left: 4px solid var(--danger);
  border-radius: 6px;
  background: var(--danger-soft);
  color: var(--ink);
  font-size: 0.9375rem;
}

.banner__text {
  flex: 1 1 14rem;
  min-width: 0;
  overflow-wrap: anywhere;
}

.banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.composer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.5rem;
}

.composer__input {
  display: block;
  width: 100%;
  min-height: 2.75rem;
  max-height: 10rem;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-control);
  background: var(--surface);
  line-height: 1.4;
  resize: none;
  field-sizing: content;
}

.composer__input::placeholder {
  color: var(--ink-2);
  opacity: 1;
}

.composer__input:focus-visible {
  border-color: var(--focus);
  outline-offset: 0;
}

.composer__input:disabled {
  background: var(--surface-2);
  cursor: not-allowed;
}

.composer__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  margin-top: 0.5rem;
  color: var(--ink-2);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.composer__hint {
  flex: 1 1 16rem;
  min-width: 0;
}

.composer__count {
  flex: none;
  font-variant-numeric: tabular-nums;
}

.composer__count.is-near-limit {
  color: var(--danger);
  font-weight: 700;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: transparent;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
}

.btn--primary {
  background: var(--brand);
  color: var(--brand-ink);
}

.btn--primary:hover:not(:disabled) {
  background: var(--brand-strong);
}

.btn--quiet {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink);
}

.btn--quiet:hover:not(:disabled) {
  background: var(--surface-2);
}

.btn--small {
  min-height: 2.5rem;
  padding: 0 0.875rem;
  font-size: 0.9375rem;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ---------- small screens ---------- */

@media (max-width: 30rem) {
  :root {
    --marker: 1.625rem;
  }

  .masthead {
    padding-top: 0.75rem;
  }

  .masthead h1 {
    font-size: 1.25rem;
  }

  .masthead__sub {
    display: none;
  }

  .status-row {
    margin-top: 0.5rem;
  }

  .progress {
    margin-top: 0.75rem;
  }

  .masthead .btn {
    min-height: 2.5rem;
    padding: 0 0.75rem;
    font-size: 0.9375rem;
  }

  .progress__label {
    font-size: 0.75rem;
  }

  .msg {
    max-width: 92%;
  }

  .msg--email_offer,
  .msg--notice {
    max-width: 100%;
  }
}

/* Short viewports (phone keyboard open, landscape): keep the transcript usable. */
@media (max-height: 36rem) {
  .masthead {
    padding-block: 0.5rem;
  }

  .masthead__sub,
  .composer__meta .composer__hint {
    display: none;
  }

  .progress {
    margin-top: 0.5rem;
  }

  .progress__step:not(.is-active) .progress__label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}

/* ---------- motion and contrast preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  .typing__dots span {
    animation: none;
    opacity: 0.7;
  }
}

@media (forced-colors: active) {
  .progress__step.is-active .progress__marker,
  .progress__step.is-done .progress__marker {
    forced-color-adjust: none;
    border-color: Highlight;
    background: Highlight;
    color: HighlightText;
  }

  .msg__bubble,
  .banner,
  .notice {
    border: 1px solid CanvasText;
  }
}