/* ==========================================================================
   Page: Nordhafen Assist (site/nordhafen-assist.html)
   White-label assistant. Everything below uses the semantic tokens, so a
   re-brand = override these eight-ish variables. Remove data-brand from
   <html> to see the default Cairn theme.
   Columns: ≥1180px sidebar · thread · artifact | 760–1179px sidebar · thread
   ========================================================================== */

/* Brand: Nordhafen -------------------------------------------------------- */
[data-brand="nordhafen"] {
  --canvas: #EEF2F4;
  --surface: #FFFFFF;
  --surface-2: #F6F8F9;
  --ink: #0E1B2A;
  --ink-2: #34465A;
  --ink-3: #5A6B7D;
  --hairline: #CFD8E0;
  --action: #0E5E6F;          /* brand teal: primary actions, mark */
  --on-action: #FFFFFF;
  --machine-tint: #E1ECEE;    /* AI answer surface */
  --machine-ink: #3B6470;     /* AI labels, citations */
}

/* Focus ring stays graphite in both themes (as in the original) */
*:focus-visible {
  outline-color: var(--graphite-900);
}

/* App frame: header + body fill the viewport ------------------------------ */
.assist {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100vh;
  background: var(--canvas);
  color: var(--ink);
}

/* Header ------------------------------------------------------------------- */
.assist-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 57px;                 /* 56px + border */
  padding: 0 16px;
  border-bottom: 1px solid var(--hairline);
  background: var(--surface);
}

.assist-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.assist-brand__mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--action);
  color: var(--on-action);
  font: 700 14px/1 var(--font-sans);
}

.assist-brand__name {
  font: 600 17px/1 var(--font-sans);
}

.assist-brand__powered {
  font: 400 12px/1 var(--font-mono);
  color: var(--ink-3);
}

.assist-header__tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-switch {
  display: flex;
  padding: 3px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
}

.brand-switch__option {
  height: 28px;
  padding: 0 10px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--ink);
  font: 500 12px/1 var(--font-mono);
  white-space: nowrap;
}

.brand-switch__option[aria-checked="true"] {
  background: var(--ink);
  color: var(--surface);
}

.assist-header__tokens,
.assist-header__tokens:hover {
  font: 400 12px/1 var(--font-mono);
  color: var(--ink-3);
  white-space: nowrap;
}

/* Body columns ----------------------------------------------------------- */
.assist-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 0;
}

.assist-sidebar,
.artifact {
  display: none;
  flex-direction: column;
}

@media (min-width: 760px) {
  .assist-body {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .assist-sidebar {
    display: flex;
  }
}

@media (min-width: 1180px) {
  .assist-body {
    grid-template-columns: 248px minmax(0, 1fr) 320px;
  }

  .artifact {
    display: flex;
  }
}

/* Sidebar ------------------------------------------------------------------ */
.assist-sidebar {
  gap: 4px;
  overflow: auto;
  padding: 14px 10px;
  border-right: 1px solid var(--hairline);
  background: var(--surface-2);
}

.assist-new {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
  margin-bottom: 12px;
  padding: 0 10px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  font: 500 14px/1 var(--font-sans);
}

.assist-new__key {
  font: 400 11px/1 var(--font-mono);
  color: var(--ink-3);
}

.assist-sidebar__heading {
  padding: 6px 10px;
  font: 500 11px/1 var(--font-mono);
  color: var(--ink-3);
}

.conversation {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink);
  text-align: left;
}

.conversation[aria-current="true"] {
  background: var(--hairline);
}

.conversation__title {
  font: 400 14px/1.3 var(--font-sans);
}

.conversation[aria-current="true"] .conversation__title {
  font-weight: 600;
}

.conversation__meta {
  font: 400 11px/1 var(--font-mono);
  color: var(--ink-3);
}

.assist-sidebar__footer {
  margin-top: auto;
  padding: 12px 10px 0;
  border-top: 1px solid var(--hairline);
  font: 400 11px/1.5 var(--font-mono);
  color: var(--ink-3);
}

/* Main: thread ------------------------------------------------------------- */
.assist-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.assist-thread {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 28px clamp(16px, 4vw, 48px);
}

/* User message */
.user-message {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 720px;
}

.user-message__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 11px/1 var(--font-mono);
  color: var(--ink-2);
}

.user-message__swatch {
  width: 11px;                  /* 9px + border */
  height: 11px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: var(--action);
}

.user-message__text {
  font: 400 22px/1.4 var(--font-serif);
}

.user-message__files {
  display: flex;
  gap: 6px;
}

.attachment {
  display: flex;
  align-items: center;
  height: 26px;                 /* 24px + border */
  padding: 0 8px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  font: 400 12px/1 var(--font-mono);
}

/* AI answer */
.ai-answer {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 760px;             /* 720px content + padding */
  padding: 20px;
  border-radius: 14px;
  background: var(--machine-tint);
}

.ai-answer__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.ai-answer__label {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 11px/1 var(--font-mono);
  color: var(--machine-ink);
  white-space: nowrap;
}

.ai-answer__action {
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font: 500 12px/1 var(--font-mono);
}

.ai-answer__head .chip {
  white-space: nowrap;
}

/* Work steps timeline */
.agent-steps {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 0 4px;
  padding: 0;
  border-left: 1px solid var(--machine-ink);
  list-style: none;
}

.agent-steps__item {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-left: 14px;
  font: 400 13px/1.3 var(--font-mono);
  color: var(--ink);
}

.agent-steps__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--machine-ink);
  border-radius: 50%;
  background: var(--machine-ink);
}

.agent-steps__time {
  color: var(--ink-3);
}

/* Step in progress: hollow dot, no time */
.agent-steps__item.is-pending::before {
  background: transparent;
}

.agent-steps__item.is-pending .agent-steps__time {
  visibility: hidden;
}

.ai-answer__text {
  max-width: 66ch;
  font: 400 16px/1.65 var(--font-sans);
}

/* Citation markers: sized like the original (content-box 18px) */
.ai-answer__text .cite {
  min-width: 28px;
  height: 20px;
  color: var(--ink-2);
  cursor: default;
}

.ai-answer__sources {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
}

.source-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 12px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.source-card__kicker {
  font: 500 11px/1 var(--font-mono);
  color: var(--machine-ink);
}

.source-card__title {
  font: 600 13px/1.3 var(--font-sans);
}

.ai-answer__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding-top: 12px;
  border-top: 1px solid var(--hairline);
}

.ai-answer__disclaimer {
  font: 400 12px/1.3 var(--font-mono);
  color: var(--ink-2);
}

.ai-answer__spacer,
.composer__spacer {
  flex: 1;
}

.ai-answer__feedback {
  display: contents;
}

.ai-answer__feedback-button {
  height: 30px;
  padding: 0 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font: 500 12px/1 var(--font-sans);
}

.ai-answer__thanks {
  font: 400 13px/1 var(--font-sans);
  color: var(--ink-2);
}

/* Hand-off card */
.handoff {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 758px;             /* 720px content + padding + border */
  padding: 18px;
  border: 1px solid var(--ink);
  border-radius: 14px;
  background: var(--surface);
}

.handoff[hidden] {
  display: none;
}

.handoff__title {
  font: 600 15px/1.3 var(--font-sans);
}

.handoff__text {
  font: 400 15px/1.5 var(--font-sans);
  color: var(--ink-2);
}

.handoff__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.handoff__button {
  height: 40px;
  padding: 0 16px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  font: 500 14px/1 var(--font-sans);
}

.handoff__button--primary {
  background: var(--action);
  color: var(--on-action);
  font-weight: 600;
}

.handoff__done {
  font: 500 14px/1.4 var(--font-sans);
}

/* Composer --------------------------------------------------------------- */
.composer-wrap {
  padding: 0 clamp(16px, 4vw, 48px) 16px;
}

.composer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 746px;             /* 720px content + padding + border */
  padding: 10px 12px;
  border: 1px solid var(--ink);
  border-radius: 14px;
  background: var(--surface);
}

.composer__input {
  height: 38px;                 /* 36px + default input padding */
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: 400 16px/1 var(--font-sans);
}

.composer__tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.composer__chip {
  display: flex;
  align-items: center;
  height: 30px;                 /* 28px + border */
  padding: 0 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  font: 500 12px/1 var(--font-sans);
  white-space: nowrap;
}

.composer__chip--pill {
  border-radius: var(--radius-pill);
}

.composer__chip--on {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--surface);
}

.composer__model {
  font: 500 12px/1 var(--font-mono);
  color: var(--ink-2);
  white-space: nowrap;
}

.composer__send {
  flex: none;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-md);
  background: var(--action);
  color: var(--on-action);
  font: 600 15px/1 var(--font-sans);
}

/* Artifact panel --------------------------------------------------------- */
.artifact {
  min-height: 0;
  border-left: 1px solid var(--hairline);
  background: var(--surface-2);
}

.artifact__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 45px;                 /* 44px + border */
  padding: 0 16px;
  border-bottom: 1px solid var(--hairline);
  font: 500 11px/1 var(--font-mono);
  color: var(--ink-3);
}

.artifact__body {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
}

.artifact__body[hidden] {
  display: none;
}

.artifact__title {
  font: 600 15px/1.3 var(--font-sans);
}

.berth-table {
  display: block;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.berth-table tbody {
  display: block;
}

.berth-table tr {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 64px;
  gap: 8px;
  padding: 9px 10px;
  border-bottom: 1px solid var(--hairline);
  font: 400 12px/1.3 var(--font-mono);
}

.berth-table tr.is-closed {
  background: var(--warning-tint);
}

.berth-table td {
  padding: 0;
}

.berth-table__ship {
  font-family: var(--font-sans);
  font-size: 13px;
}

.berth-table__eta {
  text-align: right;
}

.artifact__note {
  font: 400 11px/1.5 var(--font-mono);
  color: var(--ink-3);
}

.artifact__empty {
  margin: auto;
  padding: 24px;
  font: 400 14px/1.5 var(--font-sans);
  color: var(--ink-2);
  text-align: center;
}

/* Mobile: header wraps to two rows so nothing overflows ------------------ */
@media (max-width: 759.98px) {
  .assist-header {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
  }
}