/* KT House — site styles. Dark premium: charcoal + gold, Cormorant Garamond + Manrope. */

:root {
  --bg: #14120F;
  --bg-2: #1C1915;
  --bg-3: #26221C;
  --line: rgba(200, 165, 90, 0.22);
  --line-soft: rgba(242, 235, 221, 0.10);
  --gold: #C8A55A;
  --gold-2: #E3C57F;
  --bronze: #9C7A3C;
  --cream: #F2EBDD;
  --sand: #A69B88;
  --on-gold: #14120F;

  --font-serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-sans: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --container: 1180px;
  --radius: 4px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--sand);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--gold); text-decoration: none; transition: color 200ms var(--ease); }
a:hover { color: var(--gold-2); }
:focus-visible { outline: 2px solid var(--gold-2); outline-offset: 3px; }

h1, h2, h3 {
  font-family: var(--font-serif);
  color: var(--cream);
  font-weight: 500;
  line-height: 1.12;
  margin: 0 0 0.5em;
  letter-spacing: 0.005em;
}
h1 { font-size: clamp(2.4rem, 5.5vw, 4.4rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.35rem, 2vw, 1.7rem); }
p { margin: 0 0 1em; }

.container { width: min(var(--container), 100% - 2.5rem); margin-inline: auto; }
.container.narrow { max-width: 820px; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 100;
  background: var(--gold); color: var(--on-gold); padding: .6rem 1rem; border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }

.eyebrow {
  font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 1rem; font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 48px; padding: 0 1.5rem; border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em; cursor: pointer;
  border: 1px solid transparent; transition: background 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--gold); color: var(--on-gold); border-color: var(--gold); }
.btn-primary:hover { background: var(--gold-2); border-color: var(--gold-2); color: var(--on-gold); }
.btn-outline { background: transparent; color: var(--cream); border-color: var(--line); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold-2); }
.btn-ghost { background: transparent; color: var(--cream); border-color: var(--line-soft); padding-inline: 1.1rem; min-height: 42px; font-size: .9rem; }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-2); }
.btn-block { width: 100%; }

.link-arrow { font-weight: 600; font-size: .95rem; letter-spacing: .02em; display: inline-flex; align-items: center; gap: .4rem; }
.link-arrow::after { content: "→"; transition: transform 200ms var(--ease); }
.link-arrow:hover::after { transform: translateX(4px); }

/* Header */
.nav-phone { display: none; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 18, 15, 0.86);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner { display: flex; align-items: center; gap: 1.5rem; min-height: 88px; }
.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--cream); }
.brand-logo { height: 72px; width: auto; }
.site-nav { margin-left: auto; }
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.6rem; }
.nav-list a { color: var(--sand); font-size: .92rem; font-weight: 500; letter-spacing: .02em; padding: .4rem 0; position: relative; }
.nav-list a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--gold); transition: right 220ms var(--ease); }
.nav-list a:hover { color: var(--cream); }
.nav-list a:hover::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 1rem; }
.lang-switch { display: inline-flex; align-items: center; gap: .35rem; color: var(--line); font-size: .85rem; }
.lang-switch button {
  background: none; border: 0; color: var(--sand); font: inherit; font-weight: 600; letter-spacing: .06em;
  cursor: pointer; padding: .5rem .3rem; min-width: 32px; min-height: 40px; transition: color 200ms var(--ease);
}
.lang-switch button[aria-pressed="true"] { color: var(--gold); }
.lang-switch button:hover { color: var(--gold-2); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-soft); border-radius: var(--radius);
  width: 44px; height: 44px; cursor: pointer; position: relative;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
  content: ""; position: absolute; left: 11px; width: 20px; height: 2px; background: var(--cream); transition: transform 200ms var(--ease), opacity 200ms;
}
.nav-toggle-bar { top: 20px; }
.nav-toggle-bar::before { top: -6px; left: 0; }
.nav-toggle-bar::after { top: 6px; left: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: clamp(5rem, 12vw, 9rem) 0 clamp(4rem, 8vw, 6rem); border-bottom: 1px solid var(--line-soft); }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(1200px 600px at 70% 0%, rgba(200,165,90,0.12), transparent 60%),
    radial-gradient(800px 500px at 10% 100%, rgba(200,165,90,0.06), transparent 60%);
}
.hero-frame { position: absolute; right: -14%; bottom: -2%; width: min(1100px, 95vw); height: auto; color: var(--gold); opacity: .4; }
.hero-inner { position: relative; max-width: 780px; }
.hero h1 { margin-bottom: 1.2rem; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); max-width: 620px; color: var(--sand); }
.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2rem 0 3rem; }
.hero-facts { list-style: none; margin: 0; padding: 1.5rem 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; border-top: 1px solid var(--line-soft); max-width: 720px; }
.hero-facts strong { display: block; font-family: var(--font-serif); color: var(--cream); font-size: 1.35rem; font-weight: 500; line-height: 1.2; margin-bottom: .2rem; }
.hero-facts span { font-size: .85rem; }

/* Sections */
.section { padding: clamp(4rem, 9vw, 7rem) 0; }
.section-alt { background: var(--bg-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.section-head { max-width: 720px; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head h2 { margin-bottom: 0; }
.section-head-row { max-width: none; display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem 1.5rem; }

.card { background: var(--bg-2); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.5rem); transition: border-color 250ms var(--ease), transform 250ms var(--ease); }
.card:hover { border-color: var(--line); transform: translateY(-2px); }
.section-alt .card { background: var(--bg); }
.card-icon { width: 52px; height: 52px; color: var(--gold); margin-bottom: 1.4rem; }
.card-service h3 { margin-bottom: .6rem; }
.check-list { list-style: none; padding: 0; margin: 1.2rem 0 1.6rem; }
.check-list li { position: relative; padding-left: 1.5rem; margin-bottom: .5rem; font-size: .95rem; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .72em; width: 12px; height: 1px; background: var(--gold); }

.feature { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.feature-num { font-family: var(--font-serif); color: var(--gold); font-size: 1.1rem; letter-spacing: .1em; display: block; margin-bottom: 1rem; }
.feature h3 { font-size: 1.35rem; }
.feature p { font-size: .95rem; margin: 0; }

/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-rows: 240px; gap: 1rem; }
.tile { margin: 0; position: relative; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--line-soft); background: var(--bg-2); }
.tile-lg { grid-column: span 2; grid-row: span 2; }
.tile-media { position: absolute; inset: 0; background: linear-gradient(160deg, var(--bg-3), var(--bg-2)); transition: transform 500ms var(--ease); }
.tile-media::after {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: repeating-linear-gradient(135deg, transparent 0 22px, rgba(200,165,90,0.08) 22px 23px);
}
.tile:hover .tile-media { transform: scale(1.03); }
.tile figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 1rem 1.2rem;
  background: linear-gradient(to top, rgba(20,18,15,.92), rgba(20,18,15,0));
  color: var(--cream); font-family: var(--font-serif); font-size: 1.25rem; display: flex; flex-direction: column;
}
.tile figcaption small { font-family: var(--font-sans); font-size: .75rem; color: var(--sand); letter-spacing: .04em; }

/* Project groups (real photos) */
.project-group + .project-group { margin-top: 2.75rem; }
.project-group-title {
  font-family: var(--font-sans); font-size: .78rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold); margin: 0 0 1.1rem;
}
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.project-grid .tile { aspect-ratio: 4 / 3; }
.tile-btn { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; margin: 0; border: 0; background: none; cursor: zoom-in; display: block; }
.tile-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }
.tile-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.project-cta { margin-top: 2.5rem; text-align: center; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: rgba(10, 9, 7, .94); padding: clamp(1rem, 4vw, 3rem);
}
.lightbox[hidden] { display: none; }
.lightbox-img { max-width: min(92vw, 1100px); max-height: 78vh; object-fit: contain; border-radius: 4px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox-caption { color: var(--sand); font-family: var(--font-sans); font-size: .9rem; margin-top: 1rem; text-align: center; max-width: 60ch; }
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute; background: rgba(255,255,255,.06); border: 1px solid var(--line); color: var(--cream);
  border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background 200ms var(--ease), color 200ms var(--ease);
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: var(--gold); color: var(--on-gold); border-color: var(--gold); }
.lightbox-close { top: clamp(.75rem, 3vw, 1.5rem); right: clamp(.75rem, 3vw, 1.5rem); width: 44px; height: 44px; font-size: 1.6rem; line-height: 1; }
.lightbox-prev, .lightbox-next { top: 50%; transform: translateY(-50%); width: 52px; height: 52px; font-size: 2rem; line-height: 1; }
.lightbox-prev { left: clamp(.5rem, 3vw, 1.5rem); }
.lightbox-next { right: clamp(.5rem, 3vw, 1.5rem); }
@media (max-width: 560px) {
  .lightbox-prev, .lightbox-next { width: 42px; height: 42px; font-size: 1.6rem; }
}

/* Steps */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1.5rem; }
.steps li { position: relative; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.step-num { position: absolute; top: -13px; left: 0; background: var(--bg-2); padding-right: .6rem; font-family: var(--font-serif); color: var(--gold); font-size: 1.15rem; }
.steps h3 { font-size: 1.3rem; }
.steps p { font-size: .92rem; margin: 0; }

/* Investors */
.invest { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.invest-text .btn { margin-top: .6rem; }
.invest-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.invest-list li { padding: 1.2rem 0; border-bottom: 1px solid var(--line-soft); display: grid; gap: .2rem; }
.invest-list strong { color: var(--cream); font-family: var(--font-serif); font-size: 1.3rem; font-weight: 500; }
.invest-list span { font-size: .92rem; }

/* FAQ */
.faq details { border-top: 1px solid var(--line-soft); }
.faq details:last-child { border-bottom: 1px solid var(--line-soft); }
.faq summary {
  cursor: pointer; list-style: none; padding: 1.2rem 2.5rem 1.2rem 0; position: relative;
  font-family: var(--font-serif); font-size: 1.3rem; color: var(--cream); transition: color 200ms var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: .2rem; top: 50%; transform: translateY(-50%); color: var(--gold); font-size: 1.5rem; font-weight: 300; transition: transform 250ms var(--ease); }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq summary:hover { color: var(--gold-2); }
.faq p { padding-bottom: 1.2rem; max-width: 680px; margin: 0; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.contact-list { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.contact-list li { padding: 1rem 0; border-top: 1px solid var(--line-soft); display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: baseline; }
.contact-list li:last-child { border-bottom: 1px solid var(--line-soft); }
.contact-label { font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--sand); min-width: 110px; }
.contact-list a { color: var(--cream); font-size: 1.05rem; }
.contact-list a:hover { color: var(--gold-2); }
.dot { color: var(--line); }

.contact-form { background: var(--bg-2); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.5rem); }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: .45rem; color: var(--sand); font-weight: 600; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--bg); color: var(--cream); border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: .8rem .95rem; font: inherit; font-size: 1rem; min-height: 48px; transition: border-color 200ms var(--ease);
}
.field textarea { min-height: 120px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: rgba(166,155,136,.55); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--gold); }
.field select { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--gold) 50%), linear-gradient(135deg, var(--gold) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 2.5rem; }
.field.is-invalid input, .field.is-invalid textarea { border-color: #C0563E; }
.field .field-error { color: #E39A86; font-size: .8rem; margin-top: .35rem; display: none; }
.field.is-invalid .field-error { display: block; }
.form-note { font-size: .78rem; margin: .9rem 0 0; color: var(--sand); opacity: .85; }
.form-status { margin: .8rem 0 0; font-size: .95rem; color: var(--gold-2); min-height: 1.4em; }
.form-status.is-error { color: #E39A86; }

/* Footer */
.site-footer { border-top: 1px solid var(--line-soft); padding: 2.5rem 0; background: var(--bg-2); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem 3rem; }
.footer-copy { margin: 0; font-size: .85rem; flex-basis: 100%; order: 3; }
.footer-links { list-style: none; margin: 0 0 0 auto; padding: 0; display: flex; flex-wrap: wrap; gap: 1.2rem; font-size: .9rem; }
.footer-links a { color: var(--sand); }
.footer-links a:hover { color: var(--gold-2); }

/* Reveal on scroll (subtle) */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 400ms var(--ease), transform 400ms var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 220px; }
  .tile-lg { grid-column: span 2; grid-row: span 1; }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .btn-phone { display: none; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav { margin-left: auto; }
  .nav-list {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--bg-2); border-bottom: 1px solid var(--line-soft);
    flex-direction: column; gap: 0; padding: .5rem 1.25rem 1rem;
  }
  .nav-list.is-open { display: flex; }
  .nav-list a { display: block; padding: .9rem 0; font-size: 1.05rem; border-bottom: 1px solid var(--line-soft); }
  .nav-list a::after { display: none; }
  .nav-list .nav-phone a { color: var(--gold); border-bottom: 0; }
  .header-actions { order: 2; margin-left: auto; }
  .site-nav { order: 3; margin-left: 0; }
  .nav-phone { display: block; }
  .grid-2, .invest, .contact { grid-template-columns: 1fr; }
  .hero-facts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .brand-logo { height: 56px; }
  .hero-facts { grid-template-columns: 1fr; gap: 1rem; }
  .grid-4, .steps { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; grid-auto-rows: 200px; }
  .tile-lg { grid-column: span 1; }
  .project-grid { grid-template-columns: 1fr; }
  .hero-cta .btn { width: 100%; }
}