/*
 * Robert Perry Morris — site visual system
 *
 * The palette, type, spacing, motion, and two-panel composition intentionally
 * stay close to the original site. Semantic tokens make the light and dark
 * themes easier to maintain without duplicating component rules.
 */

/* ── TOKENS ─────────────────────────────────────────────────────────────── */
:root {
  color-scheme: dark;

  /* Brand colors stay fixed so the tri-color identity is theme-independent. */
  --brand-teal: #50a0a0;
  --brand-salmon: #cc6050;
  --brand-gold: #c09838;
  --brand-navy: #181d34;
  --brand-cream: #f0ebe0;

  /* Dark theme semantic colors. */
  --color-bg: #0b0f1c;
  --color-surface: #141830;
  --color-surface-soft: rgba(255, 255, 255, 0.045);
  --color-surface-hover: rgba(80, 160, 160, 0.15);
  --color-text: #ede8dc;
  --color-text-muted: rgba(237, 232, 220, 0.78);
  --color-text-subtle: rgba(237, 232, 220, 0.60);
  --color-display: var(--brand-cream);
  --color-accent: var(--brand-teal);
  --color-accent-bright: #72baba;
  --color-accent-soft: rgba(80, 160, 160, 0.11);
  --color-danger: var(--brand-salmon);
  --color-warning: var(--brand-gold);
  --color-rule: rgba(237, 232, 220, 0.11);
  --color-border: rgba(237, 232, 220, 0.15);
  --color-focus: #8acaca;
  --color-selection: rgba(80, 160, 160, 0.34);
  --color-primary-bg: var(--brand-teal);
  --color-primary-fg: #0b0f1c;
  --color-nav-solid: #0b0f1c;
  --color-nav-glass: rgba(11, 15, 28, 0.90);

  /* Chat remains dark in both site themes. */
  --chat-bg: #181d34;
  --chat-surface: #20263f;
  --chat-surface-user: rgba(80, 160, 160, 0.20);
  --chat-text: #ede8dc;
  --chat-text-muted: rgba(237, 232, 220, 0.68);
  --chat-text-subtle: rgba(237, 232, 220, 0.52);
  --chat-rule: rgba(237, 232, 220, 0.16);
  --chat-accent: #50a0a0;
  --chat-gold: #c09838;
  --chat-overlay: rgba(5, 8, 16, 0.58);

  /* Typography. */
  --font-sans: "IBM Plex Sans", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  /* Layout and rhythm. */
  --content-max: 1280px;
  --reading-max: 760px;
  --left-panel-width: 320px;
  --layout-gap: 80px;
  --page-gutter: 40px;
  --content-gutter-start: max(var(--page-gutter), env(safe-area-inset-left));
  --content-gutter-end: max(var(--page-gutter), env(safe-area-inset-right));
  --nav-height: 72px;
  --section-space: 104px;
  --radius-pill: 999px;
  --radius-small: 4px;

  /* Motion is limited to transforms and opacity at the component level. */
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 160ms;
  --duration-medium: 300ms;
  --duration-chat: 360ms;
}

:root[data-theme="light"] {
  color-scheme: light;
  --color-bg: #f9f7f2;
  --color-surface: #f0ede4;
  --color-surface-soft: rgba(26, 30, 44, 0.045);
  --color-surface-hover: rgba(23, 119, 119, 0.11);
  --color-text: #1a1e2c;
  --color-text-muted: rgba(26, 30, 44, 0.78);
  --color-text-subtle: rgba(26, 30, 44, 0.62);
  --color-display: #1a1e2c;
  --color-accent: #177777;
  --color-accent-bright: #1f8b8b;
  --color-accent-soft: rgba(23, 119, 119, 0.10);
  --color-danger: #a83020;
  --color-warning: #8a5f05;
  --color-rule: rgba(26, 30, 44, 0.13);
  --color-border: rgba(26, 30, 44, 0.17);
  --color-focus: #0c6c6c;
  --color-selection: rgba(23, 119, 119, 0.22);
  --color-primary-bg: #1a1e2c;
  --color-primary-fg: #f9f7f2;
  --color-nav-solid: #f9f7f2;
  --color-nav-glass: rgba(249, 247, 242, 0.91);
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

/* ── RESET AND ACCESSIBILITY ───────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--color-bg);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-wrap: break-word;
}

body.chat-open {
  overflow: hidden;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dt,
dd {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  max-width: 100%;
}

svg {
  display: block;
}

::selection {
  background: var(--color-selection);
  color: var(--color-display);
}

:where(a, button, input, textarea, select, summary, [tabindex]:not([tabindex="-1"])):focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

:where(button, input, textarea, select):disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.skip-link {
  position: fixed;
  top: max(10px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  z-index: 500;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-display);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 24px;
  opacity: 0;
  transform: translateY(calc(-100% - 20px));
  transition: transform var(--duration-fast) var(--ease-premium),
    opacity var(--duration-fast) linear;
}

.skip-link:focus-visible {
  opacity: 1;
  transform: translateY(0);
}

.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;
}

/* ── BRAND STRIPE ──────────────────────────────────────────────────────── */
.top-stripe {
  position: relative;
  z-index: 300;
  height: 4px;
  flex-shrink: 0;
  background: linear-gradient(
    90deg,
    var(--brand-teal) 0%,
    var(--brand-teal) 40%,
    var(--brand-salmon) 40%,
    var(--brand-salmon) 70%,
    var(--brand-gold) 70%,
    var(--brand-gold) 100%
  );
}

/* ── TWO-PANEL LAYOUT ──────────────────────────────────────────────────── */
.site-wrapper {
  display: flex;
  align-items: flex-start;
  width: min(100%, var(--content-max));
  min-height: 100vh;
  min-height: 100svh;
  margin-inline: auto;
  padding-left: var(--content-gutter-start);
  padding-right: var(--content-gutter-end);
  gap: var(--layout-gap);
}

.panel-left {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  flex-shrink: 0;
  flex-direction: column;
  width: var(--left-panel-width);
  min-width: var(--left-panel-width);
  height: 100vh;
  height: 100dvh;
  padding: 56px 0 36px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: none;
}

.panel-left::-webkit-scrollbar {
  display: none;
}

.pl-inner {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: min-content;
}

.pl-eyebrow,
.section-eyebrow {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.pl-eyebrow {
  max-width: 300px;
  margin-bottom: 14px;
}

.pl-name {
  margin: 0 0 18px;
  color: var(--color-display);
  font-family: var(--font-sans);
  font-size: clamp(42px, 4.5vw, 56px);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.pl-desc {
  max-width: 310px;
  margin: 0 0 32px;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.62;
}

/* Pill actions retain the original shape and understated movement. */
.pl-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.pl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: fit-content;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--color-surface-soft);
  color: var(--color-text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  transition: transform var(--duration-fast) var(--ease-premium),
    opacity var(--duration-fast) linear;
}

.pl-btn.primary {
  background: var(--color-primary-bg);
  color: var(--color-primary-fg);
}

.pl-btn.outline {
  border-color: var(--color-accent);
  background: transparent;
  color: var(--color-accent);
}

.btn-icon {
  flex: 0 0 auto;
  margin-left: 2px;
  transition: transform var(--duration-fast) var(--ease-premium);
}

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

.pl-theme-toggle {
  min-width: 44px;
  min-height: 44px;
  padding: 8px 0;
  border: 0;
  background: transparent;
  color: var(--color-text-subtle);
  cursor: pointer;
  font-size: 13px;
  line-height: 1.4;
  text-align: left;
  transition: transform var(--duration-fast) var(--ease-premium),
    opacity var(--duration-fast) linear;
}

@media (hover: hover) {
  .pl-btn:hover {
    background: var(--color-surface-hover);
    color: var(--color-accent);
    transform: translateY(-1px);
  }

  .pl-btn.primary:hover {
    background: var(--color-accent-bright);
    color: var(--color-primary-fg);
    transform: translateY(-2px);
  }

  [data-theme="light"] .pl-btn.primary:hover {
    background: #303750;
  }

  .pl-btn.outline:hover {
    background: var(--color-accent-soft);
    color: var(--color-accent);
  }

  .pl-btn:hover .btn-icon {
    transform: translate(2px, -2px);
  }

  .pl-theme-toggle:hover {
    color: var(--color-accent);
    opacity: 0.92;
  }
}

/* ── CONTENT PANEL AND NAVIGATION ─────────────────────────────────────── */
.panel-right {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
  max-width: 100%;
  padding: 40px 0 60px;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 150;
  min-height: var(--nav-height);
  margin-bottom: 62px;
  padding: 14px 0;
  background: var(--color-nav-solid);
  transform: translateZ(0);
}

/* Use glass only when the engine supports it; the opaque fallback is clearer. */
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .top-nav {
    background: var(--color-nav-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }
}

.top-nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  list-style: none;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.top-nav-list::-webkit-scrollbar {
  display: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 3px 0;
  color: var(--color-text-subtle);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  scroll-margin-inline: 24px;
}

.nav-link::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
  content: "";
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-fast) var(--ease-premium);
}

.nav-link.active,
.nav-link[aria-current="location"] {
  color: var(--color-display);
}

.nav-link.active::after,
.nav-link[aria-current="location"]::after {
  transform: scaleX(1);
}

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

/* ── SHARED SECTION TYPOGRAPHY ────────────────────────────────────────── */
.panel-right > section {
  margin-bottom: var(--section-space);
}

.section-body {
  width: 100%;
  max-width: var(--reading-max);
}

.section-eyebrow {
  display: block;
  margin-bottom: 9px;
}

.section-heading {
  max-width: 700px;
  margin: 0 0 30px;
  color: var(--color-display);
  font-family: var(--font-sans);
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.025em;
}

.about-text p {
  margin: 0 0 24px;
  color: var(--color-text-muted);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.82;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-text strong,
.connect-sub strong {
  color: var(--color-display);
  font-weight: 500;
}

/* ── ORGANIZATION-LEVEL EXPERIENCE ───────────────────────────────────── */
.organization-list {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.organization-block {
  padding-top: 28px;
  border-top: 2px solid var(--color-border);
}

.organization-block.is-current {
  border-top-color: var(--color-accent);
}

.organization-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: start;
}

.organization-company {
  margin: 0 0 7px;
  color: var(--color-display);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.organization-heading {
  max-width: 610px;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.58;
}

.organization-current-title {
  margin: 0 0 7px;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.48;
}

.organization-dates,
.organization-role-dates {
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

.organization-dates {
  padding-top: 7px;
  white-space: nowrap;
}

.organization-focus-list,
.organization-timeline {
  margin-top: 26px;
  border-top: 1px solid var(--color-rule);
}

.organization-focus-list li {
  position: relative;
  padding: 14px 0 14px 24px;
  border-bottom: 1px solid var(--color-rule);
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.68;
}

.organization-focus-list li::before {
  position: absolute;
  top: 14px;
  left: 0;
  color: var(--color-accent);
  content: "—";
}

.organization-role {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 22px;
  padding: 13px 0;
  border-bottom: 1px solid var(--color-rule);
}

.organization-role-dates {
  padding-top: 2px;
}

.organization-role-title {
  color: var(--color-display);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.52;
}

.organization-takeaway {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 22px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.organization-takeaway-label,
.case-study-result-label,
.case-study-role span {
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  line-height: 1.45;
  text-transform: uppercase;
}

.organization-takeaway-copy {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ── EDITORIAL CASE STUDIES ──────────────────────────────────────────── */
.case-study-list {
  border-top: 1px solid var(--color-border);
}

.case-study-row {
  display: grid;
  grid-template-columns: minmax(190px, 0.76fr) minmax(0, 1.45fr);
  gap: 38px;
  padding: 32px 0 34px;
  border-bottom: 1px solid var(--color-border);
}

.case-study-row-header,
.case-study-row-body {
  min-width: 0;
}

.case-study-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 7px;
  margin: 0 0 10px;
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.055em;
  line-height: 1.45;
  text-transform: uppercase;
}

.case-study-index {
  margin-right: 3px;
  color: var(--color-warning);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.case-study-title {
  margin: 0;
  color: var(--color-display);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.34;
  letter-spacing: -0.014em;
}

.case-study-narrative {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.72;
}

.case-study-highlights {
  margin-top: 18px;
  border-top: 1px solid var(--color-rule);
}

.case-study-highlights li {
  position: relative;
  padding: 10px 0 10px 18px;
  border-bottom: 1px solid var(--color-rule);
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.62;
}

.case-study-highlights li::before {
  position: absolute;
  top: 10px;
  left: 0;
  color: var(--color-accent);
  content: "–";
}

.case-study-result {
  margin-top: 21px;
  padding-left: 17px;
  border-left: 2px solid var(--color-accent);
}

.case-study-result-label {
  margin: 0 0 5px;
  color: var(--color-accent);
}

.case-study-result-copy {
  margin: 0;
  color: var(--color-display);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.42;
  letter-spacing: -0.012em;
}

.case-study-role {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 11px;
  margin: 18px 0 0;
  color: var(--color-text-subtle);
  font-size: 13.5px;
  line-height: 1.62;
}

.case-study-role span {
  padding-top: 2px;
  color: var(--color-text-subtle);
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
}

/* ── CAPABILITY-LED SKILLS ────────────────────────────────────────────── */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 46px 40px;
}

.skills-block {
  margin-bottom: 48px;
  padding-top: 19px;
  border-top: 1px dashed var(--color-rule);
}

.capabilities-grid .skills-block {
  margin-bottom: 0;
}

.skills-cat-name {
  display: block;
  margin: 0 0 18px;
  color: var(--color-display);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.35;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.skill-tag {
  padding: 5px 13px;
}

/* ── LEADERSHIP AND CONNECT ───────────────────────────────────────────── */
.lead-grid {
  display: flex;
  flex-direction: column;
  gap: 34px;
}

.lead-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 700px;
}

.lead-title {
  margin: 0;
  color: var(--color-display);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
}

.lead-desc {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.68;
}

.connect-heading {
  margin: 0 0 16px;
  color: var(--color-display);
  font-size: clamp(34px, 4vw, 42px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.connect-sub {
  max-width: 680px;
  margin: 0 0 14px;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.72;
}

.connect-sub:last-of-type {
  margin-bottom: 32px;
}

.connect-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Optional reveal hook. Content remains visible if JavaScript never initializes. */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: transform 520ms var(--ease-premium), opacity 420ms ease-out;
}

html.site-ready .reveal {
  opacity: 0;
  transform: translateY(14px);
}

html.site-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── ROBBOT ───────────────────────────────────────────────────────────── */
.chat-backdrop {
  position: fixed;
  inset: 0;
  z-index: 190;
  border: 0;
  background: var(--chat-overlay);
  cursor: default;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-chat) ease-out;
}

.chat-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.chat-panel {
  /* Reasserted locally so the dialog never inherits the light theme. */
  --color-text: var(--chat-text);
  --color-text-muted: var(--chat-text-muted);
  --color-text-subtle: var(--chat-text-subtle);
  --color-accent: var(--chat-accent);
  --color-display: var(--chat-text);
  --color-focus: #d0aa52;

  position: fixed;
  right: max(0px, env(safe-area-inset-right));
  bottom: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  width: min(380px, 100%);
  height: 70vh;
  height: min(70dvh, 580px);
  max-height: 580px;
  overflow: hidden;
  border: 1px solid var(--chat-rule);
  border-bottom: 0;
  background: var(--chat-bg);
  color: var(--chat-text);
  box-shadow: -4px -4px 40px rgba(0, 0, 0, 0.46);
  transform: translateY(calc(100% + env(safe-area-inset-bottom) + 8px));
  transition: transform var(--duration-chat) var(--ease-premium);
}

.chat-panel.open {
  transform: translateY(0);
}

.chat-header {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 10px 12px 10px 18px;
  border-bottom: 1px solid var(--chat-rule);
}

.chat-header-left {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
}

.chat-header-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--chat-gold);
  animation: chat-pulse 2s ease-in-out infinite;
  animation-play-state: paused;
}

.chat-panel.open .chat-header-dot {
  animation-play-state: running;
}

@keyframes chat-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.42; }
}

.chat-header-title {
  margin: 0;
  color: var(--chat-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.chat-header-sub {
  margin: 0;
  color: var(--chat-text-muted);
  font-size: 11px;
  line-height: 1.4;
}

.chat-close-btn,
.chat-send-btn {
  display: inline-flex;
  flex: 0 0 44px;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-premium),
    opacity var(--duration-fast) linear;
}

.chat-close-btn {
  background: transparent;
  color: var(--chat-text-muted);
  font-size: 18px;
  line-height: 1;
}

.chat-messages {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  padding: 16px 18px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: var(--chat-rule) transparent;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.chat-msg {
  max-width: 88%;
}

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

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

.chat-bubble {
  padding: 10px 14px;
  border-radius: var(--radius-small);
  color: var(--chat-text);
  font-size: 13px;
  line-height: 1.62;
}

.chat-msg.assistant .chat-bubble {
  border-left: 2px solid var(--chat-accent);
  background: var(--chat-surface);
  color: var(--chat-text);
}

.chat-msg.user .chat-bubble {
  border-right: 2px solid var(--chat-accent);
  background: var(--chat-surface-user);
  color: var(--chat-text);
  text-align: right;
}

.chat-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
}

.chat-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--chat-accent);
  animation: chat-dot 1.2s ease-in-out infinite;
}

.chat-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.chat-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes chat-dot {
  0%, 80%, 100% { opacity: 0.4; transform: scale(0.6); }
  40% { opacity: 1; transform: scale(1); }
}

.chat-disclosure {
  flex: 0 0 auto;
  margin: 0;
  padding: 9px 18px;
  border-top: 1px solid var(--chat-rule);
  color: var(--chat-text-muted);
  font-size: 11px;
  line-height: 1.45;
}

.chat-input-area {
  display: flex;
  flex-shrink: 0;
  align-items: flex-end;
  gap: 8px;
  padding: 12px 14px max(12px, env(safe-area-inset-bottom)) 18px;
  border-top: 1px solid var(--chat-rule);
}

.chat-textarea {
  flex: 1;
  min-width: 0;
  min-height: 44px;
  max-height: 120px;
  padding: 10px 12px;
  resize: none;
  border: 1px solid var(--chat-rule);
  border-radius: var(--radius-small);
  background: rgba(255, 255, 255, 0.055);
  color: var(--chat-text);
  caret-color: var(--chat-accent);
  font-size: 14px;
  line-height: 1.5;
}

.chat-textarea::placeholder {
  color: var(--chat-text-subtle);
  opacity: 1;
}

.chat-send-btn {
  border-radius: var(--radius-small);
  background: var(--chat-accent);
  color: var(--chat-bg);
  font-weight: 700;
}

.chat-panel :where(button, textarea):focus-visible {
  outline-color: var(--color-focus);
}

@media (hover: hover) {
  .chat-close-btn:hover,
  .chat-send-btn:hover {
    opacity: 0.82;
    transform: translateY(-1px);
  }
}

/* ── SHORT DESKTOP WINDOWS ────────────────────────────────────────────── */
@media (min-width: 1100px) and (max-height: 850px) {
  .panel-left {
    padding: 28px 0 20px;
  }

  .pl-eyebrow {
    margin-bottom: 9px;
  }

  .pl-name {
    margin-bottom: 12px;
    font-size: 38px;
  }

  .pl-desc {
    margin-bottom: 18px;
  }

  .pl-actions {
    gap: 7px;
  }

  .pl-footer {
    padding-top: 12px;
  }
}

@media (min-width: 1100px) and (max-height: 700px) {
  .panel-left {
    padding-top: 26px;
  }

  .pl-eyebrow {
    margin-bottom: 9px;
  }

  .pl-desc {
    margin-bottom: 16px;
    line-height: 1.48;
  }
}

/* ── TABLET AND MOBILE ────────────────────────────────────────────────── */
@media (max-width: 1099px) {
  :root {
    --page-gutter: 24px;
    --layout-gap: 38px;
    --section-space: 88px;
  }

  .site-wrapper {
    flex-direction: column;
  }

  .panel-left {
    position: relative;
    top: auto;
    width: 100%;
    min-width: 0;
    height: auto;
    padding: 46px 0 0;
    overflow: visible;
  }

  .pl-inner,
  .section-body {
    max-width: var(--reading-max);
  }

  .pl-name {
    font-size: 50px;
  }

  .pl-desc {
    max-width: 540px;
    font-size: 16px;
  }

  .pl-actions {
    flex-flow: row wrap;
  }

  .pl-footer {
    margin-top: 16px;
    padding-top: 8px;
  }

  .panel-right {
    width: 100%;
    padding-top: 0;
  }

  .top-nav {
    min-height: 70px;
    margin-right: calc(-1 * var(--content-gutter-end));
    margin-bottom: 46px;
    margin-left: calc(-1 * var(--content-gutter-start));
    padding: 13px var(--content-gutter-end) 13px var(--content-gutter-start);
    border-bottom: 1px solid var(--color-rule);
  }

  .top-nav-list {
    width: 100%;
    gap: 28px;
    scroll-padding-left: var(--content-gutter-start);
    scroll-padding-right: var(--content-gutter-end);
  }

}

@media (max-width: 700px) {
  .organization-header {
    grid-template-columns: 1fr;
    grid-template-areas:
      "dates"
      "summary";
    gap: 9px;
  }

  .organization-header > div {
    grid-area: summary;
  }

  .organization-dates {
    grid-area: dates;
    padding-top: 0;
  }

  .organization-role,
  .organization-takeaway {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 16px;
  }

  .case-study-row {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 28px 0 30px;
  }

  .capabilities-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .pl-btn {
    flex: 1 1 145px;
    width: auto;
  }
}

/* iPhone-scale tuning, including Safari's input zoom and safe areas. */
@media (max-width: 480px) {
  :root {
    --page-gutter: 20px;
    --section-space: 74px;
  }

  .panel-left {
    padding-top: 36px;
  }

  .pl-eyebrow {
    max-width: 330px;
    margin-bottom: 12px;
    font-size: 10px;
  }

  .pl-name {
    margin-bottom: 16px;
    font-size: clamp(40px, 13vw, 48px);
  }

  .pl-desc {
    margin-bottom: 28px;
    font-size: 15px;
    line-height: 1.62;
  }

  .pl-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    gap: 9px;
  }

  .pl-btn {
    width: 100%;
    min-width: 0;
    padding-inline: 14px;
  }

  .top-nav {
    margin-bottom: 40px;
  }

  .top-nav-list {
    gap: 24px;
  }

  .nav-link {
    min-height: 44px;
    font-size: 14px;
  }

  .section-heading {
    margin-bottom: 25px;
    font-size: 27px;
  }

  .about-text p {
    font-size: 16px;
    line-height: 1.76;
  }

  .organization-list {
    gap: 52px;
  }

  .organization-block {
    padding-top: 23px;
  }

  .organization-company {
    font-size: 26px;
  }

  .organization-heading {
    font-size: 16px;
  }

  .organization-role,
  .organization-takeaway {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 13px;
  }

  .case-study-title {
    font-size: 20px;
  }

  .lead-desc,
  .organization-focus-list li,
  .organization-takeaway-copy,
  .case-study-narrative {
    font-size: 14.5px;
    line-height: 1.74;
  }

  .case-study-result-copy {
    font-size: 18px;
  }

  .skills-block {
    padding-top: 17px;
  }

  .skills-cat-name {
    margin-bottom: 15px;
    font-size: 17px;
  }

  .skill-tag {
    font-size: 12.5px;
  }

  .connect-heading {
    font-size: 36px;
  }

  .connect-sub {
    font-size: 16px;
  }

  .chat-panel {
    right: 0;
    left: 0;
    width: auto;
    height: 88vh;
    height: min(88dvh, 680px);
    max-height: calc(100dvh - env(safe-area-inset-top) - 8px);
    border-right: 0;
    border-left: 0;
  }

  .chat-header {
    min-height: 62px;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }

  .chat-messages {
    padding-right: max(16px, env(safe-area-inset-right));
    padding-left: max(16px, env(safe-area-inset-left));
  }

  .chat-bubble {
    font-size: 14px;
  }

  .chat-disclosure {
    padding-right: max(16px, env(safe-area-inset-right));
    padding-left: max(16px, env(safe-area-inset-left));
    font-size: 11.5px;
  }

  .chat-input-area {
    padding-right: max(12px, env(safe-area-inset-right));
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    padding-left: max(16px, env(safe-area-inset-left));
  }

  .chat-textarea {
    font-size: 16px;
  }
}

@media (max-width: 360px) {
  .pl-btn {
    gap: 6px;
    padding-inline: 10px;
    font-size: 13px;
  }
}

/* ── REDUCED MOTION ───────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  html.site-ready .reveal,
  html.site-ready .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  .chat-header-dot {
    opacity: 1;
  }
}

@media print {
  :root {
    color-scheme: light;
    --color-bg: #ffffff;
    --color-text: #11131b;
    --color-text-muted: #343640;
    --color-text-subtle: #51535d;
    --color-display: #11131b;
  }

  html,
  body {
    background: #ffffff;
  }

  .top-stripe,
  .top-nav,
  .pl-actions,
  .pl-footer,
  .chat-panel,
  .chat-backdrop {
    display: none !important;
  }

  .site-wrapper {
    display: block;
    padding: 0;
  }

  .panel-left {
    position: static;
    width: auto;
    height: auto;
    padding: 24px 0 32px;
  }

  .panel-right {
    padding: 0;
  }

  section,
  .organization-block,
  .case-study-row,
  .skills-block,
  .lead-item {
    break-inside: avoid;
  }
}