/* ============================================
   ARCO — Architectural Acoustic Solutions
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-black: #111110;
  --color-black-soft: #171615;
  --color-brown: #895E43;
  --color-brown-soft: #9c7057;
  --color-text: #171615;
  --color-text-muted: #6b6863;
  --color-border: #e7e4de;
  --color-cream: #f4f1ec;
  --color-white-70: rgba(255, 255, 255, 0.7);
  --color-white-50: rgba(255, 255, 255, 0.5);

  --font-sans: 'Manrope', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Cormorant Garamond', 'Times New Roman', serif;

  --radius-xl: 40px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  --container-w: 1320px;
  --gutter: clamp(16px, 4vw, 64px);

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

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100%;
}
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }

.visually-hidden {
  position: absolute;
  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: 16px;
  top: -60px;
  background: var(--color-black);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.25s var(--ease);
}
.skip-link:focus {
  top: 16px;
}

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

.serif { font-family: var(--font-serif); font-weight: 500; }
.serif.italic, em.serif { font-style: italic; }
.sans { font-family: var(--font-sans); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 34px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
  border: 1.5px solid transparent;
  white-space: nowrap;
}
.btn-dark {
  background: var(--color-black);
  color: #fff;
}
.btn-dark:hover, .btn-dark:focus-visible {
  background: #2b2a28;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--color-black);
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid transparent;
}
.header-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 22px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo, .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-black);
}
.logo-mark {
  display: inline-flex;
  color: var(--color-black);
}
.logo-mark svg { transform: skewX(-6deg); }

.primary-nav {
  display: flex;
  align-items: center;
  gap: 40px;
  font-size: 0.95rem;
  font-weight: 500;
}
.primary-nav a {
  position: relative;
  padding: 4px 0;
  color: var(--color-text);
  transition: color 0.2s var(--ease);
}
.primary-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1.5px;
  background: currentColor;
  transition: width 0.25s var(--ease);
}
.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  width: 100%;
}
.nav-contact-mobile { display: none; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}
.contact-link {
  font-size: 0.95rem;
  font-weight: 500;
}
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-black);
  color: #fff;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
  flex-shrink: 0;
}
.icon-btn:hover, .icon-btn:focus-visible {
  background: var(--color-brown);
  transform: scale(1.06);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1.5px solid var(--color-black);
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
  z-index: 20;
}
.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.6px;
  background: var(--color-black);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5.6px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5.6px) rotate(-45deg);
}

.nav-scrim {
  display: none;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: clamp(28px, 5vw, 56px) 0 0;
}
.hero-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  text-align: center;
  line-height: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.hero-title .sans {
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  text-transform: uppercase;
}
.hero-title .mixed {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 0.28em;
}
.hero-title .mixed .serif {
  font-size: clamp(2.6rem, 7.6vw, 5rem);
  font-style: italic;
  font-weight: 500;
  text-transform: capitalize;
}
.hero-title .mixed .sans {
  font-size: clamp(2.4rem, 7vw, 4.6rem);
}

.hero-media {
  position: relative;
  width: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  isolation: isolate;
}
.hero-img {
  width: 100%;
  height: clamp(320px, 46vw, 620px);
  object-fit: cover;
  object-position: center 60%;
}

.hero-card {
  position: absolute;
  left: clamp(14px, 3vw, 40px);
  top: clamp(14px, 3vw, 40px);
  max-width: 320px;
  background: rgba(17, 17, 16, 0.88);
  color: #fff;
  padding: 22px 24px 30px 22px;
  border-radius: 22px 22px 22px 4px;
  backdrop-filter: blur(4px);
}
.hero-card p {
  font-size: 0.92rem;
  line-height: 1.5;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 40px);
  flex-wrap: wrap;
}

/* ============================================
   SELECTED WORKS
   ============================================ */
.works {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: clamp(72px, 10vw, 140px) var(--gutter) clamp(50px, 6vw, 80px);
}

.works-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: clamp(40px, 6vw, 64px);
}

.works-title {
  display: flex;
  flex-direction: column;
  line-height: 0.95;
  flex-shrink: 0;
}
.works-title .sans {
  font-size: clamp(2.4rem, 5.2vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}
.works-title .serif {
  font-size: clamp(2.6rem, 5.6vw, 3.9rem);
  font-weight: 500;
  text-transform: capitalize;
}

.works-intro {
  max-width: 340px;
  text-align: left;
}
.works-intro p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}
.dash-rule {
  display: flex;
  gap: 6px;
  margin-top: 16px;
}
.dash-rule span {
  display: block;
  height: 2px;
  width: 28px;
  background: var(--color-black);
}
.dash-rule span:last-child { width: 10px; opacity: 0.5; }

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.5vw, 28px);
}

.work-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.work-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}
.work-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.work-card:hover .work-media img {
  transform: scale(1.05);
}
.work-number {
  position: absolute;
  top: 16px;
  right: 20px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2.2rem;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
}
.work-tag {
  position: absolute;
  left: 16px;
  bottom: 20px;
  transform: rotate(-90deg);
  transform-origin: left bottom;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: #fff;
  text-transform: uppercase;
  font-weight: 600;
  text-shadow: 0 1px 6px rgba(0,0,0,0.4);
}
.work-info {
  padding: 0 2px;
}
.work-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.work-info p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.works-cta {
  display: flex;
  justify-content: center;
  margin-top: clamp(40px, 6vw, 64px);
}

/* ============================================
   PRODUCTS (BLACK SECTION)
   ============================================ */
.products {
  background: var(--color-black);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-xl) var(--radius-xl);
  max-width: calc(var(--container-w) + 40px);
  margin: 0 auto;
  padding: clamp(64px, 9vw, 110px) clamp(18px, 4vw, 56px) clamp(64px, 8vw, 100px);
  color: #fff;
  position: relative;
  z-index: 1;
}

.products-title {
  text-align: center;
  line-height: 1.05;
  margin-bottom: clamp(48px, 7vw, 80px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.products-title .sans {
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.products-title .serif {
  font-style: italic;
  font-weight: 500;
  font-size: clamp(2.1rem, 5.6vw, 3.8rem);
}
.products-title-line2 {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 0.28em;
  font-size: clamp(2.1rem, 5.6vw, 3.8rem);
}
.products-title-line2 .sans {
  font-size: clamp(2rem, 5.4vw, 3.6rem);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 24px);
}

.product-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
}
.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.product-card:hover img {
  transform: scale(1.05);
}
.product-overlay {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: clamp(14px, 2vw, 20px);
  background: linear-gradient(to top, rgba(0,0,0,0.82) 0%, rgba(0,0,0,0.55) 45%, transparent 100%);
}
.product-name {
  display: inline-block;
  background: rgba(17,17,16,0.85);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.product-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.product-meta div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.product-meta span:first-child {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.72);
}
.product-meta span:last-child {
  font-size: 0.76rem;
  font-weight: 600;
  color: #fff;
  text-transform: uppercase;
}

/* ============================================
   CTA
   ============================================ */
.cta {
  background: var(--color-brown);
  color: #fff;
  padding: clamp(80px, 12vw, 140px) var(--gutter);
  text-align: center;
  margin-top: calc(-1 * var(--radius-xl));
  margin-bottom: calc(-1 * var(--radius-xl));
  padding-top: calc(clamp(80px, 12vw, 140px) + var(--radius-xl));
  padding-bottom: calc(clamp(80px, 12vw, 140px) + var(--radius-xl));
  position: relative;
  z-index: 0;
}
.cta-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  line-height: 1.05;
  margin-bottom: clamp(40px, 6vw, 56px);
}
.cta-title .sans {
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.cta-title .serif {
  font-size: clamp(2.1rem, 5.8vw, 3.9rem);
  font-style: italic;
  font-weight: 500;
}

.cta-form {
  max-width: 560px;
  margin: 0 auto;
}
.cta-field {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.98);
  border-radius: var(--radius-pill);
  padding: 6px 6px 6px 26px;
  transition: box-shadow 0.25s var(--ease);
}
.cta-field:focus-within {
  box-shadow: 0 0 0 3px rgba(255,255,255,0.55);
}
.cta-field input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  padding: 12px 8px;
  min-width: 0;
}
.cta-field input::placeholder {
  color: var(--color-text-muted);
}
.cta-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-black);
  color: #fff;
  border: none;
  flex-shrink: 0;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}
.cta-submit:hover, .cta-submit:focus-visible {
  background: #2b2a28;
  transform: translateX(2px);
}
.cta-field.field-error {
  box-shadow: 0 0 0 3px rgba(220, 90, 60, 0.55);
}
.cta-form-msg {
  margin-top: 14px;
  font-size: 0.85rem;
  min-height: 1.2em;
  font-weight: 600;
}
.cta-form-msg[data-state="error"] { color: #ffe3d8; }
.cta-form-msg[data-state="success"] { color: #eafff1; }

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-black);
  color: #fff;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: clamp(32px, 4vw, 40px) var(--gutter);
  position: relative;
  z-index: 1;
}
.footer-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.footer-links {
  display: flex;
  gap: 28px;
  font-size: 0.9rem;
}
.footer-links a, .footer-social a {
  color: rgba(255,255,255,0.75);
  transition: color 0.2s var(--ease);
}
.footer-links a:hover, .footer-social a:hover,
.footer-links a:focus-visible, .footer-social a:focus-visible {
  color: #fff;
}
.footer-logo {
  color: #fff;
  font-size: 1.2rem;
}
.footer-logo .logo-mark { color: #fff; }
.footer-social {
  display: flex;
  gap: 28px;
  font-size: 0.9rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .works-grid .work-card:last-child { grid-column: 1 / -1; }
  .works-grid .work-card:last-child .work-media { aspect-ratio: 16/9; }

  .products-grid { grid-template-columns: repeat(2, 1fr); }

  .works-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .works-intro { max-width: 100%; }
}

@media (max-width: 900px) {
  .primary-nav { gap: 26px; }
  .header-inner { padding: 18px var(--gutter); }
}

/* Mobile nav */
@media (max-width: 760px) {
  .menu-toggle { display: flex; }

  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 30px;
    padding: 32px clamp(24px, 8vw, 40px);
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    z-index: 15;
    box-shadow: -12px 0 40px rgba(0,0,0,0.08);
  }
  .primary-nav.is-open {
    transform: translateX(0);
  }
  .primary-nav a {
    font-size: 1.4rem;
    font-weight: 600;
  }
  .nav-contact-mobile {
    display: block;
    margin-top: 10px;
  }
  .nav-contact-link {
    font-size: 1.1rem !important;
    font-weight: 500 !important;
    color: var(--color-text-muted);
  }

  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(17,17,16,0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--ease);
    z-index: 12;
  }
  .nav-scrim.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .header-actions .contact-link { display: none; }

  .work-tag { display: none; }
}

/* Small tablet / large mobile */
@media (max-width: 640px) {
  .works-grid { grid-template-columns: 1fr; }
  .works-grid .work-card:last-child .work-media { aspect-ratio: 4/5; }

  .products-grid { grid-template-columns: 1fr; }
  .product-card { aspect-ratio: 4/3; }

  .hero-card {
    position: static;
    max-width: 100%;
    border-radius: var(--radius-md);
    margin-top: 14px;
  }
  .hero-media { display: flex; flex-direction: column; }

  .footer-inner {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .footer-links, .footer-social {
    justify-content: center;
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  :root {
    --radius-xl: 28px;
    --radius-lg: 20px;
  }
  .btn { padding: 15px 26px; font-size: 0.9rem; }
  .hero-actions { gap: 12px; }
  .cta-field { padding-left: 18px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}