/* ==========================================================================
   Arcus Foundation — Cambridge, UK (arcus-foundation.co.uk)
   Modernist Civic & Institutional Architecture Design System
   ========================================================================== */

:root {
  --limestone: #f4f3ef;
  --limestone-deep: #e9e6de;
  --paper: #ffffff;
  --obsidian: #0e1211;
  --obsidian-soft: #181f1d;
  --emerald: #0f5c4d;
  --emerald-dark: #0a4237;
  --emerald-tint: rgba(15, 92, 77, 0.09);
  --copper: #c86d44;
  --copper-soft: rgba(200, 109, 68, 0.14);
  --ink: #161b19;
  --ink-muted: #515956;
  --line: rgba(14, 18, 17, 0.13);
  --line-strong: rgba(14, 18, 17, 0.28);
  --line-dark: rgba(244, 243, 239, 0.16);

  --font-display: "Instrument Serif", Georgia, serif;
  --font-sans: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 1260px;
  --radius: 4px;
  --radius-lg: 12px;
  --ease: 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--limestone);
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

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

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

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

.container {
  width: min(var(--container), calc(100% - 2.5rem));
  margin-inline: auto;
}

/* ==========================================================================
   Utility Strip & Navigation
   ========================================================================== */
.civic-ribbon {
  background: var(--obsidian);
  color: rgba(244, 243, 239, 0.85);
  border-bottom: 1px solid var(--line-dark);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
}

.civic-ribbon__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1.5rem;
  padding: 0.55rem 0;
}

.civic-ribbon__group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1.5rem;
}

.civic-ribbon__tag {
  color: var(--copper);
  text-transform: uppercase;
  font-weight: 500;
}

.civic-ribbon a:hover {
  color: #ffffff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(244, 243, 239, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--ease), box-shadow var(--ease);
}

.site-header.is-scrolled {
  background: rgba(244, 243, 239, 0.97);
  box-shadow: 0 8px 24px rgba(14, 18, 17, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.brand__mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand__meta {
  display: flex;
  flex-direction: column;
  line-height: 1.08;
}

.brand__name {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--obsidian);
}

.brand__domain {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--emerald);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink-muted);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--ease);
}

.nav-links a:hover {
  color: var(--obsidian);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1.5px;
  background: var(--emerald);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--ease);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--limestone);
  padding: 1.25rem 0 1.65rem;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav__links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.mobile-nav__links a {
  font-weight: 600;
  padding: 0.3rem 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--ease), background-color var(--ease), border-color var(--ease), color var(--ease);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--emerald);
  color: #ffffff;
}

.btn--primary:hover {
  background: var(--emerald-dark);
}

.btn--obsidian {
  background: var(--obsidian);
  color: var(--limestone);
}

.btn--obsidian:hover {
  background: #232a28;
}

.btn--copper {
  background: var(--copper);
  color: #ffffff;
}

.btn--copper:hover {
  background: #b55e36;
}

.btn--outline {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--obsidian);
}

.btn--outline:hover {
  background: var(--limestone-deep);
  border-color: var(--obsidian);
}

.btn--outline-light {
  background: transparent;
  border-color: rgba(244, 243, 239, 0.3);
  color: var(--limestone);
}

.btn--outline-light:hover {
  border-color: var(--limestone);
  background: rgba(244, 243, 239, 0.08);
}

.btn--sm {
  padding: 0.52rem 1rem;
  font-size: 0.81rem;
}

/* ==========================================================================
   Architectural Sections & Type
   ========================================================================== */
.section {
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--line);
}

.section--paper {
  background: var(--paper);
}

.section--obsidian {
  background: var(--obsidian);
  color: var(--limestone);
  border-bottom: 1px solid var(--line-dark);
}

.index-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--emerald);
  margin-bottom: 1rem;
}

.section--obsidian .index-kicker {
  color: var(--copper);
}

.index-kicker__code {
  padding: 0.15rem 0.45rem;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.68rem;
}

.display-heading {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.3vw, 3.7rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin: 0 0 1.1rem;
  color: var(--obsidian);
}

.section--obsidian .display-heading {
  color: var(--limestone);
}

.section-lead {
  font-size: 1.05rem;
  color: var(--ink-muted);
  max-width: 60ch;
  margin: 0;
}

.section--obsidian .section-lead {
  color: rgba(244, 243, 239, 0.76);
}

.section-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  margin-bottom: 3rem;
}

/* ==========================================================================
   Hero — Architectural Bento Grid
   ========================================================================== */
.hero {
  padding: 3.5rem 0 4.5rem;
  border-bottom: 1px solid var(--line);
}

.hero-frame {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}

.hero-frame__left {
  padding: 3.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--line);
}

.hero-frame__title {
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 5.2vw, 4.65rem);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--obsidian);
  margin: 0 0 1.35rem;
}

.hero-frame__title em {
  font-style: italic;
  color: var(--emerald);
}

.hero-frame__copy {
  font-size: 1.05rem;
  color: var(--ink-muted);
  max-width: 50ch;
  margin: 0 0 2rem;
}

.hero-frame__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

.hero-ledger {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
  gap: 1.25rem;
}

.hero-ledger__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 0.25rem;
}

.hero-ledger__val {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--obsidian);
}

.hero-frame__right {
  display: flex;
  flex-direction: column;
}

.hero-visual {
  position: relative;
  flex: 1;
  min-height: 360px;
  overflow: hidden;
  background: var(--obsidian);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-visual:hover img {
  transform: scale(1.025);
}

.hero-dossier {
  background: var(--obsidian);
  color: var(--limestone);
  padding: 1.5rem 1.75rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  border-top: 1px solid var(--line-dark);
}

.hero-dossier__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 0.25rem;
}

.hero-dossier__addr {
  font-size: 0.98rem;
  font-weight: 600;
}

.hero-dossier__meta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: rgba(244, 243, 239, 0.72);
  margin-top: 0.2rem;
}

/* ==========================================================================
   Interactive Mandate Matrix (4-Pillar Index + Detail Stage)
   ========================================================================== */
.mandate-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  border: 1px solid var(--line-strong);
  background: var(--limestone);
}

.mandate-list {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
}

.mandate-item {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 1.55rem 1.75rem;
  cursor: pointer;
  display: grid;
  grid-template-columns: 52px 1fr 24px;
  align-items: center;
  gap: 1rem;
  transition: background-color var(--ease), color var(--ease);
}

.mandate-item:last-child {
  border-bottom: 0;
}

.mandate-item__num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--copper);
  font-weight: 500;
}

.mandate-item__title {
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--obsidian);
}

.mandate-item__sub {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-muted);
  font-weight: 400;
  margin-top: 0.15rem;
}

.mandate-item__arrow {
  font-family: var(--font-mono);
  opacity: 0.45;
  transition: transform var(--ease), opacity var(--ease);
}

.mandate-item:hover {
  background: var(--paper);
}

.mandate-item.is-active {
  background: var(--obsidian);
  color: var(--limestone);
}

.mandate-item.is-active .mandate-item__title {
  color: var(--limestone);
}

.mandate-item.is-active .mandate-item__sub {
  color: rgba(244, 243, 239, 0.72);
}

.mandate-item.is-active .mandate-item__arrow {
  opacity: 1;
  transform: translateX(4px);
  color: var(--copper);
}

.mandate-stage {
  padding: 2.5rem;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
}

.mandate-panel {
  display: none;
}

.mandate-panel.is-active {
  display: block;
  animation: fadeUp 0.28s ease;
}

.mandate-panel__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--emerald);
  margin-bottom: 0.75rem;
  display: block;
}

.mandate-panel h3 {
  font-family: var(--font-display);
  font-size: 2.15rem;
  font-weight: 400;
  line-height: 1.1;
  margin: 0 0 1rem;
  color: var(--obsidian);
}

.mandate-panel p {
  color: var(--ink-muted);
  margin: 0 0 1.4rem;
}

.mandate-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.mandate-metric__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.2rem;
}

.mandate-metric__value {
  font-weight: 600;
  color: var(--obsidian);
  font-size: 0.94rem;
}

.mandate-photo {
  border: 1px solid var(--line);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.mandate-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   Initiatives & Briefings Cards
   ========================================================================== */
.filter-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-pill {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 0.48rem 0.95rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all var(--ease);
}

.filter-pill:hover {
  border-color: var(--obsidian);
}

.filter-pill.is-active {
  background: var(--obsidian);
  border-color: var(--obsidian);
  color: var(--limestone);
}

.initiatives-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.initiative-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 1.85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.initiative-card:hover {
  transform: translateY(-3px);
  border-color: var(--emerald);
  box-shadow: 0 14px 30px rgba(14, 18, 17, 0.08);
}

.initiative-card.is-hidden {
  display: none;
}

.initiative-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.initiative-card__code {
  color: var(--copper);
  font-weight: 500;
}

.initiative-card__cat {
  padding: 0.2rem 0.55rem;
  background: var(--emerald-tint);
  color: var(--emerald);
  border-radius: 2px;
}

.initiative-card h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1.12;
  margin: 0 0 0.7rem;
  color: var(--obsidian);
}

.initiative-card p {
  font-size: 0.92rem;
  color: var(--ink-muted);
  margin: 0 0 1.5rem;
}

.initiative-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.initiative-card__scope {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
}

/* ==========================================================================
   Cambridge Headquarters & Convening Schedule (Obsidian Band)
   ========================================================================== */
.cambridge-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 3rem;
  align-items: start;
}

.cambridge-arch {
  border: 1px solid var(--line-dark);
  background: var(--obsidian-soft);
}

.cambridge-arch__img {
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.cambridge-arch__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cambridge-arch__caption {
  padding: 1.4rem 1.5rem;
  border-top: 1px solid var(--line-dark);
}

.cambridge-arch__caption h3 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  margin: 0 0 0.45rem;
}

.cambridge-arch__caption p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(244, 243, 239, 0.75);
}

.forum-ledger {
  border: 1px solid var(--line-dark);
  background: var(--obsidian-soft);
  padding: 2rem;
}

.forum-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.65rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line-dark);
}

.forum-tab {
  background: transparent;
  border: 1px solid rgba(244, 243, 239, 0.24);
  color: rgba(244, 243, 239, 0.8);
  padding: 0.48rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--ease);
}

.forum-tab.is-active {
  background: var(--copper);
  border-color: var(--copper);
  color: #ffffff;
}

.forum-track {
  display: none;
  flex-direction: column;
}

.forum-track.is-active {
  display: flex;
  animation: fadeUp 0.26s ease;
}

.forum-row {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line-dark);
}

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

.forum-row__code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--copper);
}

.forum-row__title {
  font-weight: 600;
  font-size: 1rem;
}

.forum-row__meta {
  font-size: 0.85rem;
  color: rgba(244, 243, 239, 0.7);
}

.forum-row__pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.25rem 0.6rem;
  border: 1px solid rgba(244, 243, 239, 0.25);
  border-radius: 2px;
}

/* ==========================================================================
   Governance & FAQ Ledger
   ========================================================================== */
.faq-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 3.5rem;
  align-items: start;
}

.ledger-faq {
  border-top: 1px solid var(--line-strong);
}

.ledger-faq__item {
  border-bottom: 1px solid var(--line-strong);
}

.ledger-faq__btn {
  width: 100%;
  background: transparent;
  border: 0;
  padding: 1.3rem 0;
  display: grid;
  grid-template-columns: 44px 1fr 24px;
  align-items: center;
  gap: 0.85rem;
  text-align: left;
  cursor: pointer;
}

.ledger-faq__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--copper);
}

.ledger-faq__q {
  font-family: var(--font-display);
  font-size: 1.48rem;
  color: var(--obsidian);
}

.ledger-faq__plus {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  text-align: center;
  transition: transform var(--ease);
}

.ledger-faq__item.is-open .ledger-faq__plus {
  transform: rotate(45deg);
  color: var(--emerald);
}

.ledger-faq__ans {
  display: none;
  padding: 0 0 1.35rem 58px;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.ledger-faq__item.is-open .ledger-faq__ans {
  display: block;
  animation: fadeUp 0.24s ease;
}

/* ==========================================================================
   Contact & Cambridge Map Hub
   ========================================================================== */
.contact-layout {
  display: grid;
  grid-template-columns: 0.94fr 1.06fr;
  gap: 2.5rem;
}

.hq-card,
.briefing-form-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 2.15rem;
}

.hq-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}

.hq-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
}

.hq-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.hq-row__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--emerald);
  margin-bottom: 0.25rem;
}

.hq-row__val {
  font-weight: 600;
  color: var(--obsidian);
}

.copy-pill {
  background: var(--limestone);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0.3rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--ease);
}

.copy-pill:hover {
  background: var(--obsidian);
  color: var(--limestone);
  border-color: var(--obsidian);
}

.cambridge-map {
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.cambridge-map iframe {
  width: 100%;
  height: 220px;
  border: 0;
  display: block;
}

.cambridge-map__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--limestone);
  border-top: 1px solid var(--line);
}

.cambridge-map__bar a {
  color: var(--emerald);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--obsidian);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.78rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--limestone);
  font-size: 0.94rem;
  transition: border-color var(--ease), background-color var(--ease);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--emerald);
  background: var(--paper);
}

.form-footer {
  margin-top: 1.35rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.draft-box {
  margin-top: 1.25rem;
  padding: 1.15rem 1.25rem;
  background: var(--emerald-tint);
  border: 1px solid rgba(15, 92, 77, 0.35);
  display: none;
}

.draft-box.is-visible {
  display: block;
  animation: fadeUp 0.25s ease;
}

.draft-box h4 {
  margin: 0 0 0.35rem;
  color: var(--emerald-dark);
}

.draft-box p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--obsidian);
  color: rgba(244, 243, 239, 0.8);
  padding: 4rem 0 2rem;
  border-top: 3px solid var(--emerald);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--line-dark);
}

.footer-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 1rem;
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.footer-list a:hover,
.footer-list button:hover {
  color: #ffffff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-link-btn {
  background: transparent;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.65rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: rgba(244, 243, 239, 0.62);
}

/* ==========================================================================
   Modals & Toast
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(14, 18, 17, 0.68);
  backdrop-filter: blur(5px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.modal-backdrop.is-open {
  display: flex;
}

.modal-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  width: min(580px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
  box-shadow: 0 24px 60px rgba(14, 18, 17, 0.25);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line-strong);
  background: var(--limestone);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.15rem;
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--obsidian);
  color: var(--limestone);
  border: 1px solid var(--copper);
  padding: 0.78rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  z-index: 120;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

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

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .hero-frame,
  .mandate-grid,
  .cambridge-grid,
  .faq-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero-frame__left,
  .mandate-list {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .initiatives-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  .nav-links,
  .header__actions .btn--outline {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .section {
    padding: 4rem 0;
  }

  .hero-frame__left {
    padding: 2rem 1.5rem;
  }

  .hero-ledger,
  .mandate-metrics,
  .initiatives-grid,
  .form-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .forum-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}