/* Highline Residences — "Structural Clarity" design system per design-tokens.md
   Layout intentionally grid-driven and distinct from projects 01-03:
   spec-card hero, numbered value list, zigzag amenities, semantic data table,
   installment timeline, offset pull-quotes, form-in-band CTA. */
:root {
  --color-bg: #F4F4F3;
  --color-graphite: #2B2E30;
  --color-graphite-soft: #5A5F63;
  --color-accent: #2F5233;
  --color-accent-dark: #213B25;
  --color-accent-tint: #E4EBE5;
  --color-border: #D9DAD8;
  --color-text: #1D1F20;
  --shadow-flat: 0 2px 8px rgba(43, 46, 48, 0.08);
  --radius: 4px;
  --font-head: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --max-width: 1280px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 27px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
img { height: auto; }

h1, h2, h3 { font-family: var(--font-head); color: var(--color-graphite); margin: 0 0 16px; }
h1 { font-size: 46px; line-height: 54px; font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: 32px; line-height: 40px; font-weight: 600; }
h3 { font-size: 20px; line-height: 28px; font-weight: 600; }

p { margin: 0 0 16px; }

.caption { font-size: 14px; line-height: 20px; color: var(--color-graphite-soft); }

.num { font-variant-numeric: tabular-nums; } /* hard requirement: all figures */

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 64px; }

section { padding: 88px 0; border-top: 1px solid var(--color-border); }
section:first-of-type { border-top: none; }

/* ---------- Eyebrow ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 15px 30px;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
  border: 1px solid var(--color-accent);
}
.btn-primary:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); }
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn-secondary:hover { background: var(--color-accent-tint); }

/* ---------- Header / logo ---------- */
.site-header { padding: 20px 0; border-bottom: 1px solid var(--color-border); }
.site-header .container { display: flex; justify-content: space-between; align-items: center; }

.wordmark { display: inline-block; text-decoration: none; line-height: 1.1; }
.wordmark .wm-highline {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--color-graphite);
}
.wordmark .wm-rule {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  margin: 3px 0;
}
.wordmark .wm-residences {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--color-graphite-soft);
}

/* Language toggle — graphite chip with green underline (Highline variant) */
.lang-toggle {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-graphite);
  border: 1px solid var(--color-graphite);
  border-bottom: 2px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 8px 14px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}
.lang-toggle:hover { background: var(--color-graphite); color: #FFFFFF; }
.site-footer .lang-toggle {
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.5);
  border-bottom-color: #7FA884;
  margin-top: 16px;
}
.site-footer .lang-toggle:hover { background: rgba(255, 255, 255, 0.12); color: #FFFFFF; }

/* ---------- Hero: headline left + spec card right, render below ---------- */
.hero { padding: 72px 0 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 64px;
  align-items: start;
  margin-bottom: 64px;
}
.hero .btn-row { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 32px; }

.spec-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-flat);
}
.spec-card .spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
}
.spec-card .spec-row:last-child { border-bottom: none; }
.spec-card .spec-label {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-graphite-soft);
}
.spec-card .spec-value {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  color: var(--color-graphite);
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.spec-card .spec-value.highlight { color: var(--color-accent); font-size: 24px; }
.spec-card .spec-note { padding: 12px 24px 18px; font-size: 13px; line-height: 19px; color: var(--color-graphite-soft); }

.hero-render {
  border: 1px solid var(--color-border);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
}

/* ---------- Value proposition: numbered list, no cards ---------- */
.value-list { margin-top: 24px; }
.value-item {
  display: grid;
  grid-template-columns: 96px 1fr 2fr;
  gap: 32px;
  align-items: baseline;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}
.value-item:last-child { border-bottom: 1px solid var(--color-border); }
.value-item .v-num {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 40px;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}
.value-item h3 { margin: 0; }
.value-item p { margin: 0; color: var(--color-graphite-soft); }
.value-lead { max-width: 820px; }

/* ---------- Amenities: zigzag rows ---------- */
.amenity-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 48px 0;
}
.amenity-row + .amenity-row { border-top: 1px solid var(--color-border); }
.amenity-row.reverse .amenity-visual { order: 2; }
.amenity-visual {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.amenity-copy .amenity-index {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.amenity-copy p { color: var(--color-graphite-soft); margin: 0; }

/* ---------- Unit table (semantic <table>) ---------- */
.units .sub-copy { max-width: 720px; color: var(--color-graphite-soft); }
.unit-table-wrap { margin-top: 48px; background: #FFFFFF; border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
table.unit-table { width: 100%; border-collapse: collapse; }
.unit-table caption {
  text-align: left;
  padding: 16px 24px;
  font-size: 13px;
  line-height: 19px;
  color: var(--color-graphite-soft);
  caption-side: bottom;
  border-top: 1px solid var(--color-border);
}
.unit-table th {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-graphite-soft);
  text-align: left;
  padding: 16px 24px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.unit-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
  font-variant-numeric: tabular-nums;
}
.unit-table tbody tr:last-child td { border-bottom: none; }
.unit-table .unit-name { font-family: var(--font-head); font-weight: 600; font-size: 18px; color: var(--color-graphite); }
.unit-table .unit-price { font-family: var(--font-head); font-weight: 600; font-size: 20px; color: var(--color-accent); }
.unit-table .unit-thumb { width: 120px; }
.unit-table .unit-thumb img { border-radius: var(--radius); border: 1px solid var(--color-border); }
.unit-table th.col-price, .unit-table td.unit-price { text-align: right; }

/* ---------- Financing: schedule strip ---------- */
.financing { background: var(--color-graphite); }
.financing h2, .financing .fin-lead { color: #FFFFFF; }
.financing .fin-lead { max-width: 780px; color: rgba(255, 255, 255, 0.82); }
.fin-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 56px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
}
.fin-step { padding: 32px; border-left: 1px solid rgba(255, 255, 255, 0.22); }
.fin-step:first-child { border-left: none; }
.fin-step .fin-icon { width: 40px; height: 40px; margin-bottom: 20px; }
.fin-step .fin-value {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 30px;
  color: #FFFFFF;
  font-variant-numeric: tabular-nums;
  display: block;
  margin-bottom: 4px;
}
.fin-step .fin-label { color: rgba(255, 255, 255, 0.82); font-size: 15px; line-height: 23px; }
.phase-note {
  margin-top: 32px;
  padding: 20px 24px;
  border-left: 3px solid #7FA884;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.86);
  font-size: 15px;
  line-height: 24px;
  max-width: 820px;
}

/* ---------- Testimonials: offset pull-quotes, no cards ---------- */
.quotes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px 64px;
  margin-top: 48px;
}
.quote {
  border-left: 3px solid var(--color-accent);
  padding-left: 24px;
}
.quote:nth-child(2) { margin-top: 56px; } /* deliberate offset within the grid */
.quote blockquote {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 20px;
  line-height: 30px;
  font-weight: 500;
  color: var(--color-graphite);
}
.quote cite { font-style: normal; font-size: 14px; color: var(--color-graphite-soft); }

/* ---------- CTA band: split with lead form ---------- */
.cta-section { background: var(--color-accent-tint); }
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.lead-form {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-flat);
  padding: 32px;
}
.lead-form .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lead-form label {
  display: block;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-graphite-soft);
  margin-bottom: 6px;
}
.lead-form .field-full { grid-column: 1 / -1; }
.lead-form input, .lead-form select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.lead-form input:focus, .lead-form select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 0;
  border-color: var(--color-accent);
}
.lead-form .btn-primary { width: 100%; margin-top: 20px; text-align: center; border: none; }
.lead-form .form-note { font-size: 13px; line-height: 19px; color: var(--color-graphite-soft); margin: 12px 0 0; }
.form-confirm {
  display: none;
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--color-accent-tint);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  font-size: 15px;
}
.form-confirm.visible { display: block; }

/* ---------- FAQ: numbered data rows (accordion, animated) ---------- */
.faq-list { margin-top: 48px; }
.faq-list details {
  border-top: 1px solid var(--color-border);
  padding: 0;
}
.faq-list details:last-child { border-bottom: 1px solid var(--color-border); }
.faq-list summary {
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  color: var(--color-graphite);
  list-style: none;
  display: grid;
  grid-template-columns: 64px 1fr 32px;
  gap: 16px;
  align-items: baseline;
  padding: 24px 0;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary .q-num {
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}
.faq-list summary::after {
  content: "+";
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 500;
  color: var(--color-accent);
  justify-self: end;
  transition: transform 0.2s ease;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p {
  margin: 0;
  padding: 0 96px 24px 80px;
  color: var(--color-graphite-soft);
}
.faq-list .faq-answer {
  overflow: hidden;
  transition: height 0.4s cubic-bezier(0.33, 1, 0.68, 1),
              opacity 0.3s ease,
              transform 0.4s cubic-bezier(0.33, 1, 0.68, 1);
}
@media (prefers-reduced-motion: reduce) {
  .faq-list .faq-answer { transition: none; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-graphite);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 48px;
  font-size: 15px;
  line-height: 25px;
}
.site-footer .wordmark .wm-highline { color: #FFFFFF; }
.site-footer .wordmark .wm-rule { background: #7FA884; }
.site-footer .wordmark .wm-residences { color: rgba(255, 255, 255, 0.6); }
.site-footer a { color: #FFFFFF; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-grid h3 { font-size: 15px; color: #FFFFFF; letter-spacing: 0.08em; text-transform: uppercase; }
.site-footer .legal {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 24px;
  font-size: 13px;
  line-height: 20px;
  color: rgba(255, 255, 255, 0.65);
}

/* ---------- Sticky mobile CTA ---------- */
.sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--color-accent);
  padding: 14px 16px;
  text-align: center;
  transform: translateY(110%);
  transition: transform 0.3s ease;
  z-index: 50;
  display: none;
}
.sticky-cta.visible { transform: translateY(0); }
.sticky-cta a {
  color: #FFFFFF;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-decoration: none;
  display: block;
}

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  body { font-size: 16px; line-height: 26px; }
  h1 { font-size: 32px; line-height: 40px; }
  h2 { font-size: 26px; line-height: 34px; }
  .container { padding: 0 24px; }
  section { padding: 48px 0; }
  .hero { padding: 40px 0 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; margin-bottom: 48px; }
  .value-item { grid-template-columns: 56px 1fr; }
  .value-item p { grid-column: 2; }
  .value-item .v-num { font-size: 28px; }
  .amenity-row { grid-template-columns: 1fr; gap: 24px; padding: 32px 0; }
  .amenity-row.reverse .amenity-visual { order: 0; }
  /* table collapses to stacked cards */
  .unit-table thead { display: none; }
  .unit-table, .unit-table tbody, .unit-table tr, .unit-table td, .unit-table caption { display: block; }
  .unit-table tr { border-bottom: 1px solid var(--color-border); padding: 16px 0; }
  .unit-table td { border: none; padding: 4px 20px; }
  .unit-table td.unit-price { text-align: left; }
  .unit-table td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-head);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-graphite-soft);
  }
  .fin-steps { grid-template-columns: 1fr; }
  .fin-step { border-left: none; border-top: 1px solid rgba(255, 255, 255, 0.22); }
  .fin-step:first-child { border-top: none; }
  .quotes-grid { grid-template-columns: 1fr; gap: 32px; }
  .quote:nth-child(2) { margin-top: 0; }
  .cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .lead-form .form-grid { grid-template-columns: 1fr; }
  .faq-list summary { grid-template-columns: 40px 1fr 24px; padding: 20px 0; }
  .faq-list details p { padding: 0 24px 20px 56px; }
  .sticky-cta { display: block; }
}

/* ---------- Scroll-reveal (activated by JS via html.anim) ---------- */
html.anim .reveal { opacity: 0; transform: translateY(24px); }
html.anim .reveal.revealed {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease var(--rd, 0ms),
              transform 0.7s cubic-bezier(0.33, 1, 0.68, 1) var(--rd, 0ms);
}

/* ---------- Hover micro-interactions (precise, restrained) ---------- */
.amenity-visual { overflow: hidden; }
.amenity-visual img, .hero-render img { transition: transform 0.5s ease; }
.amenity-visual:hover img, .hero-render:hover img { transform: scale(1.02); }
.unit-table tbody tr { transition: background 0.2s ease; }
.unit-table tbody tr:hover { background: var(--color-accent-tint); }
.spec-card .spec-row { transition: background 0.2s ease; }
.spec-card .spec-row:hover { background: var(--color-bg); }
.quote { transition: border-color 0.25s ease, transform 0.25s ease; }
.quote:hover { border-color: var(--color-accent-dark); transform: translateX(4px); }
.btn-primary, .btn-secondary { transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease; }
.btn-primary:hover, .btn-secondary:hover { transform: translateY(-2px); }
.fin-step { transition: background 0.25s ease; }
.fin-step:hover { background: rgba(255, 255, 255, 0.05); }
@media (prefers-reduced-motion: reduce) {
  .amenity-visual img, .hero-render img, .unit-table tbody tr, .spec-card .spec-row,
  .quote, .btn-primary, .btn-secondary, .fin-step { transition: none; transform: none; }
}