/* ==========================================================
   THE RIVENSTONE — Timeless London Hospitality
   Shared stylesheet · mobile-first
   Palette: midnight navy / charcoal ink / brass gold / stone ivory
   ========================================================== */

:root {
  --navy:        #15203A;
  --navy-deep:   #0E1626;
  --ink:         #11151E;
  --gold:        #C3A05C;
  --gold-soft:   #D8BC85;
  --ivory:       #F5F1E8;
  --stone:       #E9E2D4;
  --slate-mist:  #D9DEE8;
  --text:        #2A2F3A;
  --text-light:  #6B7180;
  --white:       #FFFFFF;

  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body:    "Jost", "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text);
  background: var(--ivory);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Type scale ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.15;
  color: var(--navy);
}

h1 { font-size: clamp(2.4rem, 9vw, 4.6rem); }
h2 { font-size: clamp(1.9rem, 6vw, 3rem); }
h3 { font-size: clamp(1.35rem, 4vw, 1.7rem); }

p  { font-size: 1rem; max-width: 62ch; }

/* Brass-plaque eyebrow — the site's signature label */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
}
.eyebrow::before,
.eyebrow::after {
  content: "";
  width: 2.2rem;
  height: 1px;
  background: var(--gold);
  opacity: 0.55;
}
.eyebrow--left::before { display: none; }

/* Gold leaf divider */
.leaf-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 0 auto;
  color: var(--gold);
}
.leaf-divider::before,
.leaf-divider::after {
  content: "";
  width: 3.4rem;
  height: 1px;
  background: var(--gold);
  opacity: 0.45;
}
.leaf-divider svg { width: 16px; height: 16px; fill: var(--gold); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 0.95rem 2.1rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  background: transparent;
  cursor: pointer;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}
.btn:hover, .btn:focus-visible { background: var(--gold); color: var(--navy-deep); }

.btn--solid { background: var(--gold); color: var(--navy-deep); }
.btn--solid:hover, .btn--solid:focus-visible { background: var(--gold-soft); border-color: var(--gold-soft); }

.btn--navy { border-color: var(--navy); color: var(--navy); }
.btn--navy:hover, .btn--navy:focus-visible { background: var(--navy); color: var(--ivory); }

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

/* ---------- Header / navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-deep);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.18);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ivory);
  white-space: nowrap;
}
.brand .mark { color: var(--gold); margin-right: 0.45rem; }

/* Mobile menu toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px;
  height: 1.5px;
  background: var(--ivory);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-links {
  position: fixed;
  inset: 0;
  background: var(--navy-deep);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.2rem;
  list-style: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}
.nav-links.open { opacity: 1; pointer-events: auto; }

.nav-links a {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ivory);
  padding: 0.4rem 0.2rem;
  border-bottom: 1px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--gold); border-color: var(--gold); }

.nav-links .nav-cta a {
  background: var(--gold);
  border: 1px solid var(--gold);
  color: var(--navy-deep);
  font-weight: 500;
  padding: 0.8rem 1.9rem;
}
.nav-links .nav-cta a:hover { background: var(--gold-soft); border-color: var(--gold-soft); }

/* ---------- Hero ---------- */
.hero {
  display: flex;
  flex-direction: column;
  background: var(--navy-deep);
}

.hero__image {
  width: 100%;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  aspect-ratio: 4 / 3;
}

.hero__band {
  background: var(--navy-deep);
  color: var(--ivory);
  text-align: center;
  padding: 3rem 1.5rem 3.4rem;
}

.hero__mark {
  width: 28px;
  margin: 0 auto 1.2rem;
  fill: var(--gold);
}

.hero h1 {
  color: var(--ivory);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 1.1rem auto 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.2rem;
}

/* ---------- Page banner (inner pages) ---------- */
.page-banner__image {
  width: 100%;
  aspect-ratio: 16 / 11;
  background-size: cover;
  background-position: center;
}
.page-banner__band {
  background: var(--navy-deep);
  color: var(--ivory);
  text-align: center;
  padding: 2.6rem 1.5rem 2.8rem;
}
.page-banner h1 {
  color: var(--ivory);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: clamp(2rem, 7vw, 3.4rem);
}
.page-banner__band .eyebrow { justify-content: center; }
.page-banner p { color: var(--stone); margin: 0.7rem auto 0; }

/* ---------- Sections ---------- */
.section { padding: 4.5rem 1.5rem; }
.section--stone { background: var(--stone); }
.section--slate-mist { background: var(--slate-mist); }
.section--compact { padding: 2.6rem 1.5rem; }
.section--navy  { background: var(--navy); color: var(--stone); }
.section--navy h2, .section--navy h3 { color: var(--ivory); }

.container { max-width: 1100px; margin: 0 auto; }
.container--narrow { max-width: 760px; margin: 0 auto; }

.section-head { text-align: center; margin-bottom: 2.8rem; }
.section-head p { margin: 0.9rem auto 0; color: var(--text-light); }
.section--navy .section-head p { color: var(--gold-soft); }

/* ---------- Welcome (split) ---------- */
.split {
  display: grid;
  gap: 2.4rem;
  align-items: center;
}
.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.split__body h2 { margin-bottom: 1.1rem; }
.split__body p + p { margin-top: 1rem; }

/* ---------- Facts strip ---------- */
.facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.8rem 1rem;
  text-align: center;
  list-style: none;
}
.facts li {
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--stone);
}
.facts li span {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--gold);
  margin-bottom: 0.35rem;
}

/* ---------- Preview cards ---------- */
.cards { display: grid; gap: 1.8rem; }

.card {
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 4 / 5;
  background: var(--navy);
}
.card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,22,38,0.85) 0%, rgba(14,22,38,0.05) 55%);
}
.card__body {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: 1.6rem;
  color: var(--ivory);
}
.card__body h3 { color: var(--ivory); letter-spacing: 0.08em; }
.card__body p { font-size: 0.92rem; color: var(--stone); margin-top: 0.3rem; }
.card__body .card-link {
  display: inline-block;
  margin-top: 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 0.25rem;
}

/* ---------- Room rows / facility rows ---------- */
.feature-row { display: grid; gap: 1.6rem; margin-bottom: 4rem; }
.feature-row:last-child { margin-bottom: 0; }
.feature-row__media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.feature-row__body h3 { margin-bottom: 0.7rem; }
.feature-row__body .eyebrow { margin-bottom: 0.6rem; }
.feature-row__body p { color: var(--text); }
.feature-row__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 1rem 0 1.4rem;
  padding: 0;
  list-style: none;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-light);
}

/* ---------- Contact / booking ---------- */
.contact-grid { display: grid; gap: 2.6rem; }

.contact-details h3 { margin-bottom: 0.8rem; }
.contact-details p { color: var(--text); }
.contact-details .detail-block { margin-bottom: 1.6rem; }
.contact-details .detail-block strong {
  display: block;
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.3rem;
}

.address-thumb {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--gold);
  margin-top: 1rem;
}

.map-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--text-light);
  background: var(--stone);
}

.form-grid { display: grid; gap: 1.2rem; }

.field label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.45rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--text);
  background: var(--white);
  border: 1px solid #CFC8B8;
  padding: 0.85rem 1rem;
  transition: border-color 0.3s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--gold);
}
.field textarea { resize: vertical; min-height: 120px; }

.form-note { font-size: 0.85rem; color: var(--text-light); }

.form-success {
  display: none;
  padding: 1.1rem 1.3rem;
  border: 1px solid var(--gold);
  color: var(--navy);
  background: rgba(195, 160, 92, 0.12);
  font-size: 0.95rem;
}
.form-success.visible { display: block; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band h2 { margin-bottom: 0.7rem; }
.cta-band p { margin: 0 auto 1.8rem; color: var(--gold-soft); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--stone);
  padding: 3.5rem 1.5rem 2rem;
}
.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 2.2rem;
}
.footer-brand .brand { font-size: 1rem; }
.footer-brand p {
  font-size: 0.85rem;
  color: #9AA0AD;
  margin-top: 0.8rem;
  max-width: 32ch;
}
.footer-col h4 {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.55rem; font-size: 0.9rem; }
.footer-col a:hover { color: var(--gold); }

.footer-base {
  max-width: 1100px;
  margin: 2.8rem auto 0;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(195, 160, 92, 0.25);
  font-size: 0.78rem;
  color: #7E8493;
  text-align: center;
}

/* ---------- Static content (no scroll animation) ---------- */
.reveal {
  opacity: 1;
  transform: none;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__image { animation: none; }
  .hero__mark, .hero h1, .hero__tagline, .hero__actions { animation: none; opacity: 1; }
  .hero__scroll::after { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card img { transition: none; }
}

/* ==========================================================
   Tablet — 720px and up
   ========================================================== */
@media (min-width: 720px) {
  .section { padding: 6rem 2.5rem; }

  .nav-toggle { display: none; }
  .nav-links {
    position: static;
    background: none;
    flex-direction: row;
    gap: 2rem;
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a { font-size: 0.72rem; padding-bottom: 0.3rem; }
  .nav-links .nav-cta a { padding: 0.6rem 1.4rem; }
  .nav-bar { padding: 1.2rem 2.5rem; }

  .split { grid-template-columns: 1fr 1fr; gap: 3.5rem; }
  .split--reverse .split__media { order: 2; }

  .facts { grid-template-columns: repeat(5, 1fr); }

  .cards { grid-template-columns: repeat(3, 1fr); }

  .feature-row {
    grid-template-columns: 1.15fr 1fr;
    gap: 3rem;
    align-items: center;
  }
  .feature-row--reverse .feature-row__media { order: 2; }

  .contact-grid { grid-template-columns: 1fr 1fr; align-items: start; gap: 3.5rem; }
  .form-grid--pair { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }

  /* Hero image: tablet — slight side frame */
  .hero__image {
    max-width: 1400px;
    margin: 0 auto;
    aspect-ratio: 16 / 11;
  }
}

/* ==========================================================
   Desktop — 1080px and up
   ========================================================== */
@media (min-width: 1080px) {
  .section { padding: 7.5rem 3rem; }
  .section--compact { padding: 3.5rem 3rem; }
  .hero__content { padding: 7rem 2rem; }
  p { font-size: 1.05rem; }

  /* Hero image: desktop — wider side frame */
  .hero__image {
    aspect-ratio: 16 / 8;
  }

  .page-intro h1 { font-size: 4.4rem; }
  .page-intro p  { font-size: 1.15rem; }
}