/* ============================================================
   Barbican Castle Management Services
   ============================================================ */

:root{
  --ink-teal:      #0F3A48;
  --ink-teal-dark: #0A2830;
  --crimson:       #A32126;
  --crimson-deep:  #7C1418;
  --paper:         #F2ECDC;
  --paper-light:   #F8F5EC;
  --stone:         #6E6A5C;
  --ink:           #1A2A2E;
  --line:          rgba(15,58,72,0.16);
  --line-light:    rgba(248,245,236,0.28);

  --serif: 'Cormorant Garamond', 'Georgia', serif;
  --sans:  'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-w: 1180px;
  --pad: clamp(1.25rem, 4vw, 4rem);
}

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

html{
  scroll-behavior: smooth;
}

body{
  margin:0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a{ color: inherit; }

.wrap{
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

/* -------------------- language toggling -------------------- */
[data-lang]{ display:none; }
html[data-active-lang="en"] [data-lang="en"]{ display:block; }
html[data-active-lang="es"] [data-lang="es"]{ display:block; }
html[data-active-lang="en"] span[data-lang="en"],
html[data-active-lang="es"] span[data-lang="es"]{ display:inline; }

/* -------------------- header -------------------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(242,236,220,0.92);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 1.5rem;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}

.brand img{
  height: 34px;
  width: auto;
}

.main-nav{
  display:flex;
  align-items:center;
  gap: clamp(1.1rem, 2vw, 2.1rem);
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-teal);
}

.main-nav a{
  text-decoration:none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .2s ease, color .2s ease;
  white-space: nowrap;
}
.main-nav a:hover{ border-color: var(--crimson); color: var(--crimson-deep); }

.nav-links{ display:flex; gap: clamp(1.1rem, 2vw, 2.1rem); }

.lang-toggle{
  display:flex;
  align-items:center;
  border: 1px solid var(--ink-teal);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  font-weight: 600;
  flex-shrink: 0;
}
.lang-toggle button{
  border: none;
  background: transparent;
  color: var(--ink-teal);
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.lang-toggle button[aria-pressed="true"]{
  background: var(--ink-teal);
  color: var(--paper-light);
}

.menu-toggle{
  display:none;
  background:none;
  border:none;
  cursor:pointer;
  padding: 0.4rem;
}
.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after{
  display:block;
  width: 22px;
  height: 2px;
  background: var(--ink-teal);
  position: relative;
  transition: transform .2s ease, opacity .2s ease;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";
  position:absolute;
  left:0;
}
.menu-toggle span::before{ top: -7px; }
.menu-toggle span::after{ top: 7px; }

/* -------------------- hero -------------------- */
.hero{
  position: relative;
  min-height: 86vh;
  display:flex;
  align-items:flex-end;
  background: url('../images/hero-castle.jpg') center 62% / cover no-repeat;
  color: var(--paper-light);
}
.hero::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(0deg, rgba(10,25,30,0.82) 0%, rgba(10,25,30,0.42) 42%, rgba(10,25,30,0.06) 68%);
}
.hero .wrap{
  position: relative;
  z-index: 2;
  padding-top: 6rem;
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
  width: 100%;
}
.hero-inner{ max-width: 46rem; }
.hero-kicker{
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #E8D9B8;
  margin: 0 0 1.1rem;
  font-weight: 600;
}
.hero h1{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.3rem, 5.4vw, 3.9rem);
  line-height: 1.08;
  margin: 0 0 1.4rem;
  letter-spacing: -0.01em;
}
.hero p{
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  max-width: 34rem;
  color: #E9E5D8;
  margin: 0 0 2rem;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap: 0.6rem;
  border: 1px solid currentColor;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  text-decoration:none;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.btn-light{ color: var(--paper-light); }
.btn-light:hover{ background: var(--paper-light); color: var(--ink-teal-dark); }
.btn-solid{
  background: var(--crimson);
  border-color: var(--crimson);
  color: var(--paper-light);
}
.btn-solid:hover{ background: var(--crimson-deep); border-color: var(--crimson-deep); }

/* -------------------- generic section rhythm -------------------- */
section{ padding: clamp(3.5rem, 8vw, 6.5rem) 0; }

.section-label{
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--crimson-deep);
  margin: 0 0 0.9rem;
}

h2{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  line-height: 1.16;
  margin: 0 0 1rem;
  color: var(--ink-teal-dark);
}

/* -------------------- intro band -------------------- */
.intro{
  background: var(--paper-light);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.intro .wrap{ max-width: 900px; }
.intro h2{ font-size: clamp(1.9rem, 4vw, 2.5rem); }
.intro p{
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
  color: var(--stone);
  max-width: 42rem;
  margin: 0;
}

/* -------------------- what we do (split) -------------------- */
.split{
  display:grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.split-heading{ position: sticky; top: 6.5rem; }
.split-heading p{ color: var(--stone); max-width: 26rem; }

.rule-list{ list-style:none; margin:0; padding:0; }
.rule-list li{
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
  display:flex;
  gap: 1.1rem;
  align-items:flex-start;
  font-size: 1.06rem;
}
.rule-list li:first-child{ padding-top: 0; }
.rule-mark{
  flex-shrink:0;
  width: 22px;
  height: 22px;
  margin-top: 0.15rem;
  color: var(--crimson);
}
.rule-mark svg{ width:100%; height:100%; }

.what-we-do{ background: var(--paper); }
.what-we-do .rule-list{ border-top: 1px solid var(--line); }

.side-image{
  margin-top: clamp(2.5rem, 6vw, 4rem);
  border-radius: 2px;
  overflow:hidden;
}
.side-image img{ width:100%; height: auto; }

/* -------------------- tech band -------------------- */
.tech{
  background: var(--ink-teal-dark);
  color: var(--paper-light);
}
.tech .section-label{ color: #E8D9B8; }
.tech h2{ color: var(--paper-light); }
.tech-grid{
  display:grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items:center;
}
.tech .rule-list li{ border-bottom-color: var(--line-light); font-size: 1.04rem; }
.tech .rule-mark{ color: #E8D9B8; }
.tech-image{
  border-radius: 2px;
  overflow:hidden;
  box-shadow: 0 1.5rem 3rem rgba(0,0,0,0.35);
}
.tech-image img{ width:100%; height:100%; object-fit:cover; }

/* -------------------- why us (triptych) -------------------- */
.why{ position:relative; }
.why-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap: 2rem;
  flex-wrap:wrap;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.why-head img{
  width: 210px;
  height: 150px;
  object-fit: cover;
  border-radius: 2px;
  flex-shrink:0;
}
.triptych{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.triptych > div{
  padding: 0 clamp(1.2rem, 3vw, 2.4rem);
  border-left: 1px solid var(--line);
}
.triptych > div:first-child{ border-left: none; padding-left: 0; }
.triptych p{ color: var(--stone); font-size: 1rem; margin: 0.6rem 0 0; }
.triptych .num{
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 600;
  font-style: italic;
  color: var(--crimson-deep);
  line-height:1.25;
  display:block;
  margin-bottom: 0.6rem;
}

/* -------------------- gallery strip -------------------- */
.gallery{ padding: 0; background: var(--paper-light); }
.gallery-strip{
  display:grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
  gap: 4px;
}
.gallery-strip img{
  width:100%;
  height: clamp(220px, 30vw, 340px);
  object-fit: cover;
}

/* -------------------- contact -------------------- */
.contact{
  position: relative;
  background: url('../images/castle-day.jpg') center 70% / cover no-repeat;
  color: var(--paper-light);
}
.contact::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(10,25,30,0.86), rgba(10,25,30,0.72));
}
.contact .wrap{ position:relative; z-index:2; text-align:center; max-width: 720px; }
.contact .section-label{ color:#E8D9B8; }
.contact h2{ color: var(--paper-light); font-size: clamp(2.1rem, 4.2vw, 3rem); }
.contact-email{
  display:inline-block;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin: 1.2rem 0 2.2rem;
  color: var(--paper-light);
  text-decoration:none;
  border-bottom: 1px solid var(--crimson);
  padding-bottom: 0.2rem;
}
.contact-email:hover{ color: #E8D9B8; }
.contact-address{
  font-size: 0.88rem;
  color: #C9C3B3;
  line-height: 1.7;
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line-light);
}

/* -------------------- footer -------------------- */
footer{
  background: var(--ink-teal-dark);
  color: #9FAEB2;
  padding: 2rem 0;
  font-size: 0.82rem;
}
footer .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
footer img{ height: 26px; opacity: 0.85; }

/* -------------------- responsive -------------------- */
@media (max-width: 900px){
  .split{ grid-template-columns: 1fr; }
  .split-heading{ position:static; }
  .tech-grid{ grid-template-columns: 1fr; }
  .tech-image{ order: -1; }
  .triptych{ grid-template-columns: 1fr; gap: 1.8rem; }
  .triptych > div{ border-left:none; padding-left:0; border-top: 1px solid var(--line); padding-top: 1.6rem; }
  .triptych > div:first-child{ border-top:none; padding-top:0; }
  .gallery-strip{ grid-template-columns: 1fr 1fr; }
  .why-head img{ display:none; }
}

@media (max-width: 720px){
  .main-nav{
    position: absolute;
    top: 100%; left:0; right:0;
    background: var(--paper-light);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem var(--pad) 1.5rem;
    gap: 1.1rem;
    display:none;
  }
  .main-nav.open{ display:flex; }
  .nav-links{ flex-direction:column; gap: 0.9rem; }
  .lang-toggle{ align-self:flex-start; }
  .menu-toggle{ display:block; }
  .gallery-strip{ grid-template-columns: 1fr 1fr; }
  .gallery-strip img{ height: 44vw; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ transition:none !important; }
}