/* ==========================================================================
   COMPONENTS.CSS - The FJ Company Design System
   Fixed Vertical Sidebar, Mobile Dock & Drawer, Plate Book, Form Controls,
   Fit Checker Tool, Cookie Banner, and Support Chat Widget
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Brand & Logos
   -------------------------------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  min-height: 44px;
}

.brand img {
  height: 2.1rem;
  width: auto;
  max-width: 38vw;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   2. Desktop Sidebar Header (Vertical Shell) & Mobile Nav
   -------------------------------------------------------------------------- */
.sidebar-header {
  position: static;
  width: 100%;
  background-color: var(--surface);
  border-bottom: var(--hairline);
  padding: var(--space-4) var(--space-6);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-brand-wrap {
  display: flex;
  align-items: center;
}

.sidebar-nav-container {
  display: none;
}

.sidebar-contact-block {
  display: none;
}

/* Drawer Dialog for Mobile navigation triggered by dock Menu button */
.mobile-drawer-dialog {
  position: fixed;
  inset: 0;
  background-color: rgba(39, 42, 39, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 120;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-mechanical);
}

.mobile-drawer-dialog.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-drawer-content {
  background-color: var(--ground);
  border-top: 2px solid var(--ink);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: var(--space-6);
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform var(--duration-normal) var(--ease-snappy);
}

.mobile-drawer-dialog.is-open .mobile-drawer-content {
  transform: translateY(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: var(--hairline);
}

.mobile-drawer-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--surface);
  border: var(--hairline);
  border-radius: var(--radius-xs);
  color: var(--ink);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-mechanical),
              border-color var(--duration-fast) var(--ease-mechanical);
}

.mobile-drawer-close:hover {
  background-color: var(--surface-2);
  border-color: var(--ink);
}

.mobile-drawer-close:active {
  background-color: var(--line);
}

.mobile-drawer-close:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.mobile-drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink);
  border-radius: var(--radius-xs);
  min-height: 48px;
  transition: background-color var(--duration-fast) var(--ease-mechanical),
              color var(--duration-fast) var(--ease-mechanical);
}

.mobile-drawer-link:hover {
  background-color: var(--surface);
  color: var(--accent);
}

.mobile-drawer-link:active {
  background-color: var(--surface-2);
}

.mobile-drawer-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mobile-drawer-link[aria-current="page"] {
  background-color: var(--surface);
  color: var(--accent);
  font-weight: 800;
}

/* --------------------------------------------------------------------------
   3. Mobile Bottom Dock (Mandatory Blueprint Dock)
   -------------------------------------------------------------------------- */
.mobile-dock {
  position: fixed;
  inset: auto 0 0 0;
  height: var(--dock-height);
  padding-bottom: env(safe-area-inset-bottom);
  background-color: var(--ground);
  border-top: var(--hairline);
  box-shadow: 0 -2px 10px rgba(39, 42, 39, 0.06);
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.dock-item,
.dock-button {
  appearance: none;
  background: none;
  border: 0;
  font: inherit;
  color: var(--ink-soft);
  flex: 1 1 0;
  min-height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  gap: 3px;
  padding: 4px 2px;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-mechanical);
}

.dock-item .icon,
.dock-button .icon {
  width: 22px;
  height: 22px;
}

.dock-item .dock-label,
.dock-button .dock-label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  text-transform: capitalize;
  white-space: nowrap;
}

.dock-item:hover,
.dock-button:hover {
  color: var(--ink);
}

.dock-item:active,
.dock-button:active {
  color: var(--accent);
}

.dock-item:focus-visible,
.dock-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.dock-item[aria-current="page"] {
  color: var(--accent);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   4. Desktop Vertical Sidebar Transformation (min-width: 1024px)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  .app-shell {
    flex-direction: row;
  }

  .sidebar-header {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    max-width: var(--sidebar-w);
    min-height: 100vh;
    height: 100%;
    position: static; /* Header leaves with document - nothing pinned */
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    padding: var(--space-8) var(--space-6) var(--space-10) var(--space-6);
    border-right: var(--hairline);
    border-bottom: 0;
    flex-shrink: 0;
  }

  .sidebar-brand-wrap {
    margin-bottom: var(--space-8);
  }

  .sidebar-brand-wrap .brand img {
    height: 2.25rem;
    max-width: 100%;
  }

  .sidebar-nav-container {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
  }

  .sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  .sidebar-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--ink-soft);
    border-radius: var(--radius-xs);
    min-height: 44px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: color var(--duration-fast) var(--ease-mechanical),
                background-color var(--duration-fast) var(--ease-mechanical);
  }

  .sidebar-nav-link .icon {
    width: 14px;
    height: 14px;
    opacity: 0.6;
    transition: opacity var(--duration-fast) var(--ease-mechanical),
                transform var(--duration-fast) var(--ease-snappy);
  }

  .sidebar-nav-link:hover {
    color: var(--ink);
    background-color: var(--surface-2);
  }

  .sidebar-nav-link:hover .icon {
    opacity: 1;
    transform: translateX(2px);
  }

  .sidebar-nav-link:active {
    background-color: var(--line);
  }

  .sidebar-nav-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .sidebar-nav-link[aria-current="page"] {
    color: var(--accent);
    background-color: var(--surface-2);
    font-weight: 800;
  }

  .sidebar-contact-block {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-top: var(--space-6);
    border-top: var(--hairline);
    margin-top: auto;
  }

  .sidebar-contact-line {
    font-size: var(--text-xs);
    color: var(--ink-soft);
    line-height: 1.4;
  }

  .sidebar-contact-line strong {
    color: var(--ink);
    display: block;
    margin-bottom: 2px;
  }

  .sidebar-contact-link {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--ink);
    font-weight: 600;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: color var(--duration-fast) var(--ease-mechanical);
  }

  .sidebar-contact-link:hover {
    color: var(--accent);
  }

  .sidebar-contact-link:active {
    color: var(--ink);
  }

  .sidebar-contact-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  /* Dock hidden on desktop */
  .mobile-dock {
    display: none !important;
  }

  .mobile-drawer-dialog {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   5. Buttons & Controls (Strict 3 States: hover, active, focus-visible)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  min-height: 44px;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--duration-fast) var(--ease-mechanical),
              border-color var(--duration-fast) var(--ease-mechanical),
              color var(--duration-fast) var(--ease-mechanical),
              box-shadow var(--duration-fast) var(--ease-mechanical);
}

.btn-primary {
  background-color: var(--accent);
  color: var(--accent-ink);
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background-color: #8f530d;
  border-color: #8f530d;
  box-shadow: 0 2px 6px rgba(168, 101, 21, 0.25);
}

.btn-primary:active {
  background-color: #724209;
  border-color: #724209;
  box-shadow: none;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-secondary:hover {
  background-color: var(--surface-2);
  border-color: var(--ink);
  color: var(--ink);
}

.btn-secondary:active {
  background-color: var(--line);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-outline:hover {
  border-color: var(--ink);
  background-color: rgba(39, 42, 39, 0.04);
}

.btn-outline:active {
  background-color: rgba(39, 42, 39, 0.08);
}

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

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  min-height: 44px;
}

/* --------------------------------------------------------------------------
   6. Badges, Tags & Spec Metrics
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--surface);
  color: var(--ink);
  border: var(--hairline);
  border-radius: var(--radius-xs);
  min-height: 28px;
}

.badge-accent {
  background-color: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.spec-matrix {
  width: 100%;
  border: var(--hairline);
  border-radius: var(--radius-xs);
  background: var(--surface);
  margin-top: var(--space-4);
}

.spec-matrix-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: var(--hairline);
  font-size: var(--text-sm);
}

.spec-matrix-row:last-child {
  border-bottom: 0;
}

.spec-matrix-key {
  color: var(--ink-soft);
  font-weight: 600;
}

.spec-matrix-val {
  font-family: var(--font-mono);
  color: var(--ink);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   7. Form Controls & Field Validation States
   -------------------------------------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  position: relative;
}

.form-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--ink-soft);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--duration-fast) var(--ease-mechanical),
              background-color var(--duration-fast) var(--ease-mechanical);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  background-color: var(--surface-2);
  border-color: var(--ink);
}

.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  background-color: var(--ground);
  border-color: var(--accent);
}

.form-group.has-error .form-input,
.form-group.has-error .form-select,
.form-group.has-error .form-textarea {
  border-color: #a82015;
  background-color: #f7e6e5;
}

.form-error-msg {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #a82015;
  margin-top: 4px;
}

.form-group.has-error .form-error-msg {
  display: block;
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--ink-soft);
  cursor: pointer;
  min-height: 44px;
  padding-top: var(--space-2);
}

.form-checkbox {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--accent);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   8. Commission Fit Checker (Interactive Tool Styles)
   -------------------------------------------------------------------------- */
.tool-box {
  background-color: var(--surface);
  border: var(--hairline);
  border-radius: var(--radius-xs);
  padding: var(--space-8);
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tool-output-panel {
  background-color: var(--ground);
  border: var(--hairline);
  border-radius: var(--radius-xs);
  padding: var(--space-6);
}

.tool-output-header {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.tool-output-figure {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.tool-output-note {
  font-size: var(--text-sm);
  color: var(--ink-soft);
  margin-top: var(--space-2);
}

.milestone-breakdown {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: var(--hairline);
}

@media (min-width: 640px) {
  .milestone-breakdown {
    grid-template-columns: repeat(3, 1fr);
  }
}

.milestone-card {
  padding: var(--space-3);
  background-color: var(--surface);
  border: var(--hairline);
  border-radius: var(--radius-xs);
}

.milestone-card .milestone-label {
  font-size: var(--text-xs);
  color: var(--ink-soft);
  display: block;
}

.milestone-card .milestone-amount {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   9. Footer Pattern (Full Restatement + Legal + Back to Top)
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--surface);
  border-top: var(--hairline);
  padding-top: var(--space-12);
  padding-bottom: var(--space-16);
  color: var(--ink);
  margin-top: auto;
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .footer-main-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-brand-col .brand img {
  height: 2.2rem;
  margin-bottom: var(--space-4);
}

.footer-bio {
  font-size: var(--text-sm);
  color: var(--ink-soft);
  max-width: 40ch;
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: var(--space-4);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-nav-link {
  font-size: var(--text-sm);
  color: var(--ink-soft);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color var(--duration-fast) var(--ease-mechanical);
}

.footer-nav-link:hover {
  color: var(--accent);
}

.footer-nav-link:active {
  color: var(--ink);
}

.footer-nav-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.footer-contact-item {
  font-size: var(--text-sm);
  color: var(--ink-soft);
  margin-bottom: var(--space-2);
  line-height: 1.5;
}

.footer-contact-item a {
  color: var(--ink);
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-contact-item a:hover {
  color: var(--accent);
}

.footer-contact-item a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.footer-bottom-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: var(--hairline);
}

@media (min-width: 768px) {
  .footer-bottom-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--ink-soft);
}

.footer-legal-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--ink-soft);
  transition: color var(--duration-fast) var(--ease-mechanical);
}

.footer-legal-link:hover {
  color: var(--ink);
}

.footer-legal-link:active {
  color: var(--accent);
}

.footer-legal-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.footer-back-to-top {
  appearance: none;
  background: none;
  border: var(--hairline);
  border-radius: var(--radius-xs);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  transition: background-color var(--duration-fast) var(--ease-mechanical),
              border-color var(--duration-fast) var(--ease-mechanical);
}

.footer-back-to-top:hover {
  background-color: var(--surface-2);
  border-color: var(--ink);
}

.footer-back-to-top:active {
  background-color: var(--line);
}

.footer-back-to-top:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   10. Cookie Banner (Compact Bottom Dock Bar)
   -------------------------------------------------------------------------- */
.cookie-banner {
  position: fixed;
  inset: auto 0 0 0;
  background-color: var(--ground);
  border-top: 2px solid var(--ink);
  padding: var(--space-4) var(--space-6);
  z-index: 110;
  box-shadow: 0 -4px 16px rgba(39, 42, 39, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transform: translateY(0);
  transition: transform var(--duration-normal) var(--ease-snappy);
}

@media (min-width: 768px) {
  .cookie-banner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.cookie-banner[hidden] {
  display: none !important;
}

.cookie-banner-text {
  font-size: var(--text-sm);
  color: var(--ink);
  max-width: var(--max-ch);
}

.cookie-banner-text a {
  text-decoration: underline;
  color: var(--accent);
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.cookie-banner-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   11. Support Chat Widget & Launcher Button
   -------------------------------------------------------------------------- */
.chat-launcher {
  position: fixed;
  bottom: calc(var(--dock-height) + var(--space-4));
  right: var(--space-4);
  z-index: 95;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-xs);
  background-color: var(--ink);
  color: var(--ground);
  border: 1px solid var(--line);
  box-shadow: 0 4px 12px rgba(39, 42, 39, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-mechanical),
              border-color var(--duration-fast) var(--ease-mechanical),
              transform var(--duration-fast) var(--ease-snappy),
              bottom var(--duration-normal) var(--ease-mechanical);
}

@media (min-width: 1024px) {
  .chat-launcher {
    bottom: var(--space-6);
    right: var(--space-6);
  }
}

.chat-launcher:hover {
  background-color: #171917;
  border-color: var(--accent);
  transform: translateY(-2px);
}

.chat-launcher:active {
  background-color: #0b0c0b;
  transform: translateY(0);
}

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

.chat-launcher-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.chat-panel {
  position: fixed;
  bottom: calc(var(--dock-height) + var(--space-4));
  right: var(--space-4);
  width: calc(100vw - 2 * var(--space-4));
  max-width: 380px;
  height: 520px;
  max-height: calc(100vh - var(--dock-height) - 40px);
  background-color: var(--ground);
  border: 2px solid var(--ink);
  border-radius: var(--radius-xs);
  box-shadow: 0 8px 24px rgba(39, 42, 39, 0.2);
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .chat-panel {
    bottom: var(--space-6);
    right: var(--space-6);
    max-height: calc(100vh - 80px);
  }
}

.chat-panel[hidden] {
  display: none !important;
}

.chat-header {
  background-color: var(--surface);
  border-bottom: var(--hairline);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-header-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--ink);
}

.chat-close-btn {
  appearance: none;
  background: none;
  border: 0;
  color: var(--ink-soft);
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-xs);
  transition: color var(--duration-fast) var(--ease-mechanical),
              background-color var(--duration-fast) var(--ease-mechanical);
}

.chat-close-btn:hover {
  color: var(--ink);
  background-color: var(--surface-2);
}

.chat-close-btn:active {
  background-color: var(--line);
}

.chat-close-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.chat-body {
  flex: 1 1 auto;
  padding: var(--space-4);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background-color: var(--ground);
}

.chat-msg {
  max-width: 82%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  border-radius: var(--radius-xs);
  line-height: 1.45;
}

.chat-msg-operator {
  align-self: flex-start;
  background-color: var(--surface);
  color: var(--ink);
  border: var(--hairline);
}

.chat-msg-visitor {
  align-self: flex-end;
  background-color: var(--ink);
  color: var(--ground);
}

.chat-footer {
  background-color: var(--surface);
  border-top: var(--hairline);
  padding: var(--space-3);
}

.chat-form {
  display: flex;
  gap: var(--space-2);
}

.chat-input {
  flex: 1 1 auto;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  background-color: var(--ground);
  border: var(--hairline);
  border-radius: var(--radius-xs);
  font-size: var(--text-sm);
}

.chat-input:focus-visible {
  outline: 2px solid var(--accent);
}