/* Nuvori design tokens — source: resources/docs/design.md v1.0 */
:root {
  /* Brand primitives */
  --nuvori-midnight: #132a3a;
  --nuvori-signal: #20b8aa;
  --nuvori-ink: #192e39;
  --nuvori-muted: #64737b;
  --nuvori-white: #ffffff;
  --nuvori-line: #dce4e5;
  --nuvori-pale: #f2f6f5;

  /* Semantic surfaces */
  --color-page: var(--nuvori-white);
  --color-surface: var(--nuvori-white);
  --color-surface-subtle: var(--nuvori-pale);
  --color-surface-sidebar: #f0f5f4;
  --color-surface-selected: #d9ece7;
  --color-surface-inverse: var(--nuvori-midnight);
  --color-surface-inverse-raised: #1e3747;
  --color-surface-closing: #e2f3ed;
  --color-surface-sovereign: #f0f6f4;
  --color-surface-approval: #fbfdfc;

  /* Text and interaction */
  --color-text: var(--nuvori-ink);
  --color-text-muted: var(--nuvori-muted);
  --color-text-inverse: var(--nuvori-white);
  --color-text-inverse-muted: #9fb4bf;
  --color-text-selected: #16695e;
  --color-text-accent: #0b988c;
  --color-text-accent-inverse: #7bd9ca;
  --color-link-hover: #078379;
  --color-action: var(--nuvori-midnight);
  --color-action-hover: #235065;
  --color-action-text: var(--nuvori-white);
  --color-focus: #1b9b90;
  --color-border: var(--nuvori-line);
  --color-border-inverse: #41606a;
  --color-border-approval: #bcd9d2;
  --color-status-awaiting: #947732;

  /* Participant and mention treatments */
  --color-agent-bg: #dff1ee;
  --color-agent-text: #08776c;
  --color-finance-bg: #e9eaf5;
  --color-finance-text: #62678b;
  --color-mention-bg: #e5f5f0;
  --color-mention-text: #137f70;
  --color-badge-bg: #f0f5f4;
  --color-badge-text: #68817d;
  --color-badge-border: #e2eae8;

  /* Overlays */
  --color-glass: #132a3aab;
  --color-glass-border: #ffffff24;
  --color-dialog-backdrop: #061c2bb0;
  --blur-glass: 12px;
  --blur-dialog: 5px;

  /* Typography */
  --font-body: 'DM Sans', Arial, sans-serif;
  --font-display: 'Manrope', Arial, sans-serif;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-wordmark: 800;
  --text-body: 1rem;
  --text-lead: 1.0625rem;
  --text-control: .875rem;
  --text-secondary: .8125rem;
  --text-meta: .75rem;
  --text-h1: clamp(3.25rem, 5.3vw, 5rem);
  --text-h2: clamp(2.125rem, 3.2vw, 3rem);
  --text-h3: 1.375rem;
  --text-closing: clamp(2.25rem, 4vw, 3.625rem);
  --leading-body: 1.6;
  --leading-copy: 1.8;
  --leading-h1: 1.09;
  --leading-h2: 1.2;
  --leading-h3: 1.1;
  --tracking-display: -.125rem;
  --tracking-h3: -.0375rem;
  --tracking-eyebrow: .1rem;

  /* Spacing */
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 2rem;
  --space-8: 2.5rem;
  --space-9: 3.75rem;
  --space-10: 5rem;
  --space-section: 5.9375rem;
  --space-section-mobile: 4.0625rem;

  /* Layout */
  --layout-max: 90rem;
  --layout-inner-max: 81rem;
  --layout-gutter: 5%;
  --layout-gutter-mobile: 6%;
  --layout-header-height: 6.25rem;
  --layout-header-mobile: 5rem;
  --layout-copy-max: 28.125rem;
  --layout-hero-copy-max: 30rem;
  --layout-workspace-sidebar: 16.25rem;
  --layout-identity-max: 26.875rem;
  --layout-dialog-max: 35rem;

  /* Shape */
  --radius-badge: .1875rem;
  --radius-control: .3125rem;
  --radius-card: .375rem;
  --radius-hero: .5625rem;
  --radius-panel: .625rem;
  --radius-dialog: .75rem;
  --border-width: 1px;
  --focus-width: 3px;
  --focus-offset: 5px;

  /* Elevation and motion */
  --shadow-workspace: 0 25px 60px #132a3a0b;
  --shadow-identity: 0 25px 70px #001b2955;
  --shadow-dialog: 0 20px 90px #0003;
  --motion-fast: 200ms;
  --motion-ease: ease;
  --motion-hover-lift: -2px;
  --scroll-anchor-offset: 90px;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--scroll-anchor-offset); }
body {
  margin: 0;
  background: var(--color-page);
  color: var(--color-text);
  font: var(--weight-regular) var(--text-body)/var(--leading-body) var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { font-family: var(--font-display); margin: 0; }
h1 { font-size: var(--text-h1); font-weight: var(--weight-medium); line-height: var(--leading-h1); letter-spacing: var(--tracking-display); }
h1 em { font-style: normal; color: var(--color-text-accent); }
h2 { font-size: var(--text-h2); font-weight: var(--weight-medium); line-height: var(--leading-h2); letter-spacing: var(--tracking-display); }
h3 { font-size: var(--text-h3); font-weight: var(--weight-semibold); line-height: var(--leading-h3); letter-spacing: var(--tracking-h3); }
p { margin: 0; }
p + p { margin-top: var(--space-4); }
a { color: inherit; }
a:hover { color: var(--color-link-hover); }
:focus-visible { outline: var(--focus-width) solid var(--color-focus); outline-offset: var(--focus-offset); }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl { margin: 0; }

.container {
  width: 100%;
  max-width: var(--layout-max);
  margin-inline: auto;
  padding-inline: var(--layout-gutter);
}
.eyebrow {
  font-size: var(--text-meta);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--color-text-accent);
  margin-bottom: var(--space-4);
}
.eyebrow-inverse { color: var(--color-text-accent-inverse); }
.centered { text-align: center; margin-inline: auto; }
.lead { font-size: var(--text-lead); line-height: var(--leading-copy); max-width: var(--layout-hero-copy-max); color: var(--color-text-muted); }
.copy { max-width: var(--layout-copy-max); line-height: var(--leading-copy); color: var(--color-text-muted); }
.skip-link { position: absolute; left: -999px; top: var(--space-2); background: var(--color-action); color: var(--color-action-text); padding: var(--space-2) var(--space-4); border-radius: var(--radius-control); z-index: 100; }
.skip-link:focus { left: var(--space-2); }

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  min-height: 44px;
  padding: 1rem 1.375rem;
  border: 0;
  border-radius: var(--radius-control);
  background: var(--color-action);
  color: var(--color-action-text);
  font: var(--weight-semibold) var(--text-control)/1.6 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}
.button:hover { background: var(--color-action-hover); color: var(--color-action-text); transform: translateY(var(--motion-hover-lift)); }
.button-compact { padding: .75rem 1.125rem; }
.text-link { font-size: var(--text-control); font-weight: var(--weight-medium); color: var(--color-text-accent); }

/* Header */
.site-header { position: sticky; top: 0; background: var(--color-page); border-bottom: var(--border-width) solid var(--color-border); z-index: 20; }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: var(--layout-header-height); gap: var(--space-6); }
.wordmark { display: inline-flex; align-items: center; gap: 11px; font-family: var(--font-display); font-size: 2rem; font-weight: var(--weight-wordmark); letter-spacing: -1.5px; text-decoration: none; color: var(--color-text); }
.wordmark:hover { color: var(--color-text); }
.wordmark-suffix { font-size: 1.0625rem; font-weight: var(--weight-regular); letter-spacing: -.4px; color: var(--color-text-muted); }
.site-nav { display: flex; align-items: center; gap: var(--space-7); }
.nav-list { display: flex; gap: var(--space-6); }
.nav-list a { font-size: var(--text-control); font-weight: var(--weight-medium); text-decoration: none; padding: var(--space-3) 0; display: inline-block; }
.menu-button { display: none; min-height: 44px; min-width: 44px; padding: var(--space-2) var(--space-4); background: transparent; border: var(--border-width) solid var(--color-border); border-radius: var(--radius-control); font: var(--weight-semibold) var(--text-control) var(--font-body); color: var(--color-text); cursor: pointer; }

/* Hero */
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-9); align-items: center; padding-block: var(--space-10); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-6); margin-top: var(--space-8); }
.hero-copy .lead { margin-top: var(--space-6); }
.hero-art { position: relative; min-height: 590px; border-radius: var(--radius-hero); background: var(--color-surface-inverse); overflow: hidden; }
.hero-art img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-annotation { position: absolute; top: var(--space-5); left: var(--space-5); font-size: var(--text-meta); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-inverse-muted); }
.hero-caption { position: absolute; left: var(--space-5); right: var(--space-5); bottom: var(--space-5); padding: var(--space-3) var(--space-4); background: var(--color-glass); border: var(--border-width) solid var(--color-glass-border); border-radius: var(--radius-card); backdrop-filter: blur(var(--blur-glass)); color: var(--color-text-inverse); font-size: var(--text-secondary); }

/* Principles strip */
.principles { border-top: var(--border-width) solid var(--color-border); border-bottom: var(--border-width) solid var(--color-border); }
.principles-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); padding-block: var(--space-6); font-size: var(--text-secondary); color: var(--color-text-muted); }
.principles strong { color: var(--color-text); font-weight: var(--weight-semibold); }

/* Sections */
.section { padding-block: var(--space-section); }
.section-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 100px; align-items: end; margin-bottom: var(--space-9); }

/* Workspace illustration */
.illustrative { font-size: var(--text-meta); font-weight: var(--weight-bold); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-3); }
.workspace-frame { display: grid; grid-template-columns: var(--layout-workspace-sidebar) 1fr; border: var(--border-width) solid var(--color-border); border-radius: var(--radius-panel); box-shadow: var(--shadow-workspace); overflow: hidden; background: var(--color-surface); }
.workspace-sidebar { background: var(--color-surface-sidebar); padding: var(--space-6) var(--space-5); border-right: var(--border-width) solid var(--color-border); font-size: var(--text-control); }
.sidebar-heading { font-size: var(--text-meta); font-weight: var(--weight-bold); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-muted); margin: var(--space-5) 0 var(--space-2); }
.sidebar-heading:first-child { margin-top: 0; }
.workspace-sidebar li { padding: var(--space-2) var(--space-3); border-radius: var(--radius-control); display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.workspace-sidebar li.selected { background: var(--color-surface-selected); color: var(--color-text-selected); font-weight: var(--weight-semibold); }
.conversation { display: flex; flex-direction: column; min-width: 0; }
.conversation-header { min-height: 70px; display: flex; align-items: center; padding: 0 35px; border-bottom: var(--border-width) solid var(--color-border); }
.room-name { font-weight: var(--weight-semibold); }
.room-subtitle { font-size: var(--text-secondary); color: var(--color-text-muted); margin-top: 0; }
.messages { padding: var(--space-6) 35px; display: flex; flex-direction: column; gap: var(--space-6); }
.message { display: grid; grid-template-columns: 37px 1fr; gap: 15px; font-size: var(--text-control); line-height: var(--leading-body); }
.message > div { min-width: 0; }
.avatar { width: 37px; height: 37px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--color-surface-selected); color: var(--color-text-selected); font-weight: var(--weight-semibold); }
.avatar-agent { background: var(--color-agent-bg); color: var(--color-agent-text); }
.avatar-finance { background: var(--color-finance-bg); color: var(--color-finance-text); }
.message-meta { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-1); }
.message-meta time { font-size: var(--text-meta); color: var(--color-text-muted); }
.author { font-weight: var(--weight-semibold); }
.badge { display: inline-block; font-size: var(--text-meta); font-weight: var(--weight-bold); letter-spacing: .05rem; text-transform: uppercase; padding: 1px 6px; border-radius: var(--radius-badge); background: var(--color-badge-bg); color: var(--color-badge-text); border: var(--border-width) solid var(--color-badge-border); }
.mention { background: var(--color-mention-bg); color: var(--color-mention-text); border-radius: var(--radius-badge); padding: 0 4px; font-weight: var(--weight-medium); }
.mention-finance { background: var(--color-finance-bg); color: var(--color-finance-text); }
.composer { margin: 0 35px var(--space-6); padding: var(--space-3) var(--space-4); border: var(--border-width) solid var(--color-border); border-radius: var(--radius-control); color: var(--color-text-muted); font-size: var(--text-control); }

/* Approval card */
.approval-card { max-width: 530px; margin-top: var(--space-2); padding: 15px 18px; background: var(--color-surface-approval); border: var(--border-width) solid var(--color-border-approval); border-radius: var(--radius-card); }
.approval-title { font-weight: var(--weight-semibold); }
.approval-status { display: flex; align-items: center; gap: var(--space-2); color: var(--color-status-awaiting); font-weight: var(--weight-medium); margin-block: var(--space-3); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-status-awaiting); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 45px; }
.step { border-top: var(--border-width) solid var(--color-border); padding-top: var(--space-6); }
.step-number { font-family: var(--font-display); font-weight: var(--weight-bold); color: var(--color-text-accent); margin-bottom: var(--space-4); }
.step h3 { margin-bottom: var(--space-3); }
.step p { font-size: .9375rem; line-height: var(--leading-copy); color: var(--color-text-muted); }
.capability { font-size: var(--text-meta); font-weight: var(--weight-bold); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-accent); }

/* Connectivity band */
.connectivity { background: var(--color-surface-inverse); color: var(--color-text-inverse); padding-block: var(--space-section); }
.connectivity-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 100px; align-items: center; }
.copy-inverse p { color: var(--color-text-inverse-muted); line-height: var(--leading-copy); max-width: var(--layout-copy-max); }
.copy-inverse h2 { margin-bottom: var(--space-6); }
.copy-inverse a:hover { color: var(--color-text-accent-inverse); }
.identity-card { max-width: var(--layout-identity-max); margin-left: auto; padding: 32px; background: var(--color-surface-inverse-raised); border: var(--border-width) solid var(--color-border-inverse); border-radius: var(--radius-panel); box-shadow: var(--shadow-identity); }
.identity-label { font-size: var(--text-meta); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-text-inverse-muted); margin-top: var(--space-5); }
.identity-name { font-family: var(--font-display); font-size: var(--text-h3); font-weight: var(--weight-semibold); margin-top: var(--space-1); }
.identity-description { font-size: var(--text-control); color: var(--color-text-inverse-muted); margin-top: var(--space-2); }
.identity-card dl { margin-top: var(--space-6); font-size: var(--text-control); }
.identity-card dl div { display: flex; justify-content: space-between; gap: var(--space-4); padding-block: var(--space-3); border-top: var(--border-width) solid var(--color-glass-border); }
.identity-card dt { color: var(--color-text-inverse-muted); }
.identity-card dd { margin: 0; text-align: right; }

/* Trust */
.trust h2 { max-width: 40rem; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 45px; margin-top: var(--space-9); }
.feature h3 { margin-bottom: var(--space-3); }
.feature p { font-size: .9375rem; line-height: var(--leading-copy); color: var(--color-text-muted); }
.sovereign { margin-top: var(--space-9); padding: var(--space-6) var(--space-7); background: var(--color-surface-sovereign); border-radius: var(--radius-card); text-align: center; color: var(--color-text-muted); }

/* Closing */
.closing { background: var(--color-surface-closing); padding-block: var(--space-section); text-align: center; }
.closing h2 { font-size: var(--text-closing); max-width: 44rem; margin-inline: auto; }
.closing p { max-width: 32rem; margin: var(--space-6) auto var(--space-8); color: var(--color-text-muted); }

/* Footer */
.site-footer { border-top: var(--border-width) solid var(--color-border); padding-block: var(--space-8); font-size: var(--text-control); color: var(--color-text-muted); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-4); }
.footer-inner .wordmark { font-size: 1.5rem; }
.copyright { font-size: var(--text-secondary); }

/* Dialog */
.dialog { width: min(var(--layout-dialog-max), calc(100vw - 32px)); padding: 40px; border: 0; border-radius: var(--radius-dialog); box-shadow: var(--shadow-dialog); color: var(--color-text); }
.dialog::backdrop { background: var(--color-dialog-backdrop); backdrop-filter: blur(var(--blur-dialog)); }
.dialog h2 { font-size: var(--text-h3); margin-bottom: var(--space-4); }
.dialog p { color: var(--color-text-muted); line-height: var(--leading-copy); margin-bottom: var(--space-6); }

/* Responsive */
@media (max-width: 1350px) {
  .hero { gap: 35px; }
  .hero-art { min-height: 540px; }
  .workspace-frame { grid-template-columns: 230px 1fr; }
  .section-intro, .connectivity-inner { gap: 50px; }
}
@media (max-width: 950px) {
  h1 { font-size: 3.375rem; }
  .hero-art { min-height: 520px; }
  .workspace-frame { grid-template-columns: 190px 1fr; }
  .nav-list { gap: var(--space-4); }
  .site-nav { gap: var(--space-4); }
  .room-subtitle { display: none; }
  .principles-inner { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .container { padding-inline: var(--layout-gutter-mobile); }
  .header-inner { min-height: var(--layout-header-mobile); }
  .wordmark { font-size: 1.8125rem; }
  .menu-button { display: inline-flex; align-items: center; justify-content: center; }
  .nav-list, .nav-cta { display: none; }
  .site-nav.is-open .nav-list { display: flex; flex-direction: column; position: absolute; left: 0; right: 0; top: var(--layout-header-mobile); background: var(--color-page); border-bottom: var(--border-width) solid var(--color-border); padding: var(--space-4) var(--layout-gutter-mobile); gap: 0; }
  .site-nav.is-open .nav-list a { display: block; padding: var(--space-3) 0; min-height: 44px; }
  .section { padding-block: var(--space-section-mobile); }
  .connectivity, .closing { padding-block: var(--space-section-mobile); }
  .hero, .section-intro, .connectivity-inner, .steps, .features, .principles-inner { grid-template-columns: 1fr; }
  .hero { padding-block: var(--space-8); gap: var(--space-7); }
  h1 { font-size: clamp(2.9375rem, 11vw, 4.25rem); }
  h2 { font-size: 2.125rem; }
  .closing h2 { font-size: 2.25rem; }
  .hero-art { min-height: 430px; }
  .section-intro { gap: var(--space-6); margin-bottom: var(--space-8); }
  .steps { gap: 32px; }
  .workspace-frame { grid-template-columns: 1fr; }
  .workspace-sidebar { display: none; }
  .conversation-header, .messages { padding-inline: 16px; }
  .composer { margin-inline: 16px; }
  .message { grid-template-columns: 30px 1fr; }
  .avatar { width: 30px; height: 30px; font-size: var(--text-secondary); }
  .approval-card .button { width: 100%; }
  .identity-card { max-width: 100%; }
  .dialog { padding: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
  .button:hover { transform: none; }
}