:root {
  --bg-canvas: #3b0d1a;
  --bg-surface: #521b2b;
  --bg-surface-hover: #642235;
  --bg-champagne: #e8d5a8;
  --bg-champagne-card: #dfc893;
  --text-primary: #fff6e5;
  --text-muted: #dfcbb8;
  --text-dark: #3b0d1a;
  --text-dark-muted: #5c2032;
  --accent-primary: #e8d5a8;
  --accent-secondary: #c99e67;
  --status-flown: #b8e0b8;
  --status-flown-text: #1c3b1e;
  --status-proposed: #f5d896;
  --status-proposed-text: #452906;
  --status-concept: #f2b8c6;
  --status-concept-text: #4a0e20;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-soft: 0 10px 28px -6px rgba(18, 3, 8, 0.45);
  --shadow-elevation: 0 20px 42px -8px rgba(14, 2, 6, 0.68);
  --glow-accent: 0 0 26px -6px rgba(232, 213, 168, 0.35);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  overflow-wrap: anywhere;
  hyphens: auto;
}

h1, h2, h3, h4, .heading-font {
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.2;
  margin-top: 0;
  overflow-wrap: anywhere;
  hyphens: auto;
}

h1 {
  font-size: clamp(2.1rem, 4.8vw, 3.8rem);
  letter-spacing: 0.14em;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  margin-bottom: 0.65rem;
}

p {
  margin-top: 0;
  margin-bottom: 1.15rem;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

.champagne-band :focus-visible {
  outline-color: var(--text-dark);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-primary);
  color: var(--text-dark);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.prose-width {
  max-width: 70ch;
  margin-left: auto;
  margin-right: auto;
}

.prose-left {
  max-width: 70ch;
}

/* Header: Rounded-end floating-style box in normal flow, inset from edges, left brand */
.site-header-wrap {
  position: relative;
  padding: 1.25rem 1.5rem 0;
  z-index: 50;
}

.site-header {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  background-color: var(--bg-surface);
  border-radius: 999px;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: var(--shadow-soft);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  font-size: 1.05rem;
  flex-shrink: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: var(--accent-primary);
  color: var(--text-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-primary);
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.92rem;
  position: relative;
  padding: 0.25rem 0;
  white-space: nowrap;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-primary);
  transition: width 0.3s var(--ease-kinetic);
}

.main-nav a:hover::after,
.main-nav a[aria-current="page"]::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: var(--accent-primary);
  color: var(--text-dark);
  border: none;
  border-radius: 999px;
  width: 38px;
  height: 38px;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.mobile-dropdown {
  display: none;
  max-width: 1200px;
  margin: 0.65rem auto 0;
  background-color: var(--bg-surface);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-elevation);
}

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

.mobile-dropdown nav {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.mobile-dropdown a {
  color: var(--text-primary);
  text-decoration: none;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 1rem;
  padding: 0.35rem 0;
}

/* Hero Sections */
.hero-viewport {
  min-height: calc(100vh - 5.5rem);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 4rem 1.5rem;
  background-color: #290711;
  background-image:
    radial-gradient(circle at 50% 32%, rgba(232, 213, 168, 0.16) 0%, rgba(59, 13, 26, 0.82) 55%, rgba(41, 7, 17, 0.96) 100%),
    url("images/render-lunar-cycle-atelier-hero.jpg");
  background-size: cover;
  background-position: center;
}

.hero-content {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  border-radius: 999px;
  background-color: rgba(82, 27, 43, 0.9);
  color: var(--accent-primary);
  padding: 0.38rem 1rem;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.82rem;
  margin-bottom: 1.25rem;
}

.hero-lead {
  font-size: clamp(1.08rem, 1.8vw, 1.3rem);
  color: var(--text-muted);
  max-width: 64ch;
  margin: 0 auto 2rem;
}

.hero-caption-note {
  margin-top: 2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.page-hero {
  padding: 4rem 0 3rem;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  align-items: center;
}

/* Buttons & Growing Underline Links */
.btn-champagne {
  display: inline-block;
  background-color: var(--accent-primary);
  color: var(--text-dark);
  text-decoration: none;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-weight: 700;
  padding: 0.95rem 2rem;
  border: none;
  border-radius: 0;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s var(--ease-kinetic), box-shadow 0.3s var(--ease-kinetic), background-color 0.3s ease;
}

.btn-champagne:hover {
  transform: translateY(-4px) scale(1.015);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
  background-color: #f3e4be;
}

.champagne-band .btn-champagne {
  background-color: var(--text-dark);
  color: var(--text-primary);
}

.champagne-band .btn-champagne:hover {
  background-color: #521b2b;
}

.link-grow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--accent-primary);
  position: relative;
  padding-bottom: 0.2rem;
  background: none;
  border: none;
  cursor: pointer;
}

.link-grow::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24%;
  height: 2px;
  background-color: currentColor;
  transition: width 0.32s var(--ease-kinetic);
}

.link-grow:hover::after {
  width: 100%;
}

.champagne-band .link-grow {
  color: var(--text-dark);
}

/* Section Bands (Square corners, alternating Burgundy & Champagne) */
.section-band {
  padding: 4.5rem 0;
  border-radius: 0;
}

.champagne-band {
  background-color: var(--bg-champagne);
  color: var(--text-dark);
}

.champagne-band p,
.champagne-band li {
  color: var(--text-dark-muted);
}

.champagne-band h2,
.champagne-band h3,
.champagne-band h4,
.champagne-band strong {
  color: var(--text-dark);
}

.section-header {
  margin-bottom: 2.5rem;
  max-width: 72ch;
}

.section-kicker {
  display: block;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.82rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
}

.champagne-band .section-kicker {
  color: var(--text-dark-muted);
  font-weight: 700;
}

/* Badges & Avatars (Rounded/Circular ONLY here) */
.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 0.26rem 0.8rem;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.74rem;
  font-weight: 700;
}

.badge-flown {
  background-color: var(--status-flown);
  color: var(--status-flown-text);
}

.badge-proposed {
  background-color: var(--status-proposed);
  color: var(--status-proposed-text);
}

.badge-concept {
  background-color: var(--status-concept);
  color: var(--status-concept-text);
}

.avatar-circle {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  background-color: var(--accent-primary);
  color: var(--text-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

/* Grids & Cards (Borderless, square corners, soft shadows lifting on hover) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.atelier-card {
  background-color: var(--bg-surface);
  border: none;
  border-radius: 0;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease-kinetic), box-shadow 0.35s var(--ease-kinetic), background-color 0.3s ease;
}

.atelier-card:hover {
  transform: translateY(-5px) scale(1.01);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
  background-color: var(--bg-surface-hover);
}

.champagne-band .atelier-card {
  background-color: #f4e6c6;
  color: var(--text-dark);
  box-shadow: 0 10px 26px -6px rgba(59, 13, 26, 0.18);
}

.champagne-band .atelier-card:hover {
  background-color: #faf0d7;
  box-shadow: 0 18px 36px -6px rgba(59, 13, 26, 0.3);
}

.card-media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #2b0812;
}

.card-media-wide {
  aspect-ratio: 16 / 9;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 0;
}

.media-label {
  position: absolute;
  bottom: 0.65rem;
  left: 0.65rem;
  background-color: rgba(41, 7, 17, 0.86);
  color: var(--text-primary);
  font-size: 0.72rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-meta-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.card-actions {
  margin-top: auto;
  padding-top: 1rem;
}

/* Specification Strips */
.spec-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1px;
  background-color: rgba(232, 213, 168, 0.16);
  margin: 1.25rem 0;
}

.champagne-band .spec-strip {
  background-color: rgba(59, 13, 26, 0.15);
}

.spec-cell {
  background-color: var(--bg-surface);
  padding: 0.75rem 0.9rem;
}

.champagne-band .spec-cell {
  background-color: #efe0bc;
}

.spec-label {
  display: block;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  color: var(--accent-primary);
}

.champagne-band .spec-label {
  color: var(--text-dark-muted);
}

.spec-val {
  display: block;
  font-weight: 700;
  font-size: 0.98rem;
  margin-top: 0.15rem;
}

/* Accessible Terrain Tabs */
.tabs-wrap {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-soft);
  padding: 1.75rem;
}

.champagne-band .tabs-wrap {
  background-color: #f4e6c6;
  box-shadow: 0 12px 28px -8px rgba(59, 13, 26, 0.22);
}

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.75rem;
}

.tab-btn {
  background-color: rgba(59, 13, 26, 0.12);
  color: inherit;
  border: none;
  padding: 0.7rem 1.2rem;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.tab-btn[aria-selected="true"] {
  background-color: var(--text-dark);
  color: var(--text-primary);
}

.burgundy-tabs .tab-btn {
  background-color: rgba(255, 246, 229, 0.09);
  color: var(--text-primary);
}

.burgundy-tabs .tab-btn[aria-selected="true"] {
  background-color: var(--accent-primary);
  color: var(--text-dark);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

/* Engineering Accordions */
.accordion-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-soft);
}

.champagne-band .accordion-item {
  background-color: #f4e6c6;
  box-shadow: 0 8px 22px -6px rgba(59, 13, 26, 0.16);
}

.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  color: inherit;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
}

.accordion-icon {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background-color: rgba(232, 213, 168, 0.18);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: transform 0.3s var(--ease-kinetic);
}

.champagne-band .accordion-icon {
  background-color: rgba(59, 13, 26, 0.14);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.5rem;
}

.accordion-content.is-open {
  display: block;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  box-shadow: var(--shadow-soft);
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-surface);
  text-align: left;
}

.champagne-band table {
  background-color: #f4e6c6;
}

th, td {
  padding: 1rem 1.15rem;
}

th {
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.85rem;
  background-color: rgba(0, 0, 0, 0.22);
  color: var(--accent-primary);
}

.champagne-band th {
  background-color: var(--text-dark);
  color: var(--text-primary);
}

tr:nth-child(even) td {
  background-color: rgba(255, 246, 229, 0.03);
}

.champagne-band tr:nth-child(even) td {
  background-color: rgba(59, 13, 26, 0.05);
}

/* Horizontal Split Panel */
.split-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.25rem;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-soft);
  padding: 2rem;
  align-items: center;
  margin-bottom: 2rem;
}

.champagne-band .split-panel {
  background-color: #f4e6c6;
}

/* Contact Workshop Tool */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.field-group {
  margin-bottom: 1.25rem;
}

.field-group label {
  display: block;
  font-family: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  margin-bottom: 0.45rem;
  font-weight: 700;
}

.field-group input,
.field-group select,
.field-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background-color: #310a15;
  color: var(--text-primary);
  border: none;
  border-radius: 0;
  font-family: inherit;
  font-size: 1rem;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.35);
}

.field-group textarea {
  min-height: 130px;
  resize: vertical;
}

.preview-box {
  background-color: #290711;
  color: var(--accent-primary);
  padding: 1.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
  white-space: pre-wrap;
  min-height: 180px;
  margin-bottom: 1.25rem;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.status-toast {
  font-size: 0.9rem;
  color: var(--accent-primary);
  min-height: 1.4rem;
  margin-top: 0.75rem;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--ease-kinetic), transform 0.65s var(--ease-kinetic);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* Footer */
.site-footer {
  background-color: #260610;
  color: var(--text-muted);
  padding: 4rem 0 2.5rem;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.25rem;
  margin-bottom: 2.5rem;
}

.footer-heading {
  color: var(--accent-primary);
  font-size: 0.9rem;
  margin-bottom: 0.9rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.footer-legal {
  padding-top: 1.75rem;
  background-color: rgba(255, 246, 229, 0.03);
  padding: 1.5rem;
  font-size: 0.84rem;
}

/* Responsive Breakpoints */
@media (max-width: 767px) {
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .site-header-wrap {
    padding: 0.85rem 1rem 0;
  }
  .site-header {
    padding: 0.65rem 1rem;
  }
  .section-band {
    padding: 3.25rem 0;
  }
  .hero-viewport {
    min-height: 78vh;
    padding: 3rem 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  .tabs-wrap,
  .split-panel,
  .card-body {
    padding: 1.2rem;
  }
}