/* ============================================================
   metalfurniture.id — design system
   Warm craft gallery · reclaimed metal + wood
   Palette: ivory / graphite / oak / rust / patina / steel
   Type: Fraunces (display) · Instrument Sans (body) · IBM Plex Mono (data)
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --ivory: #F4EFE4;
  --ivory-2: #ECE4D1;
  --ivory-3: #E4DAC3;
  --graphite: #26261F;
  --graphite-soft: #4A463D;
  --oak: #A56B3B;
  --oak-deep: #8A5428;
  --rust: #C1502E;
  --rust-deep: #A34022;
  --patina: #74806F;
  --patina-deep: #5C6A58;
  --patina-light: #A7B49A; /* for text on graphite (AA ≥ 4.5:1) */
  --steel: #5B6064;
  --hairline: rgba(38, 38, 31, 0.16);
  --hairline-soft: rgba(38, 38, 31, 0.1);
  --white: #FDFCF8;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Instrument Sans", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", Consolas, monospace;

  --max-w: 1200px;
  --pad: clamp(20px, 4.5vw, 48px);
  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --space-6: 8rem;

  --radius: 3px;
  --shadow-soft: 0 18px 40px -24px rgba(38, 38, 31, 0.45);

  --z-nav: 50;
  --z-menu: 40;
  --z-overlay: 30;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--graphite);
  background: var(--ivory);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; }

::selection { background: var(--rust); color: var(--white); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; line-height: 1.08; margin: 0; letter-spacing: -0.01em; }

p { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

button { font: inherit; cursor: pointer; }

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

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

/* ---------- Layout primitives ---------- */
.container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--pad); }

.section { padding-block: var(--space-5); }
.section-tight { padding-block: var(--space-4); }

/* Mono kicker eyebrow */
.kicker {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rust-deep);
  display: inline-flex;
  align-items: center;
  gap: .6rem;
}
.kicker::before { content: ""; width: 1.4rem; height: 1px; background: var(--rust); flex: none; }

/* Provenance line — the signature element */
.provenance {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--steel);
  display: inline-flex;
  align-items: baseline;
  gap: .55rem;
  line-height: 1.5;
}
.provenance::before {
  content: "▪";
  color: var(--rust);
  font-size: .8em;
  transform: translateY(-1px);
}

/* Hairline rule */
.rule { border: 0; border-top: 1px solid var(--hairline); }

/* Section header */
.sec-head { display: grid; gap: var(--space-2); margin-bottom: var(--space-4); max-width: 720px; }
.sec-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
.sec-head .lede { color: var(--graphite-soft); max-width: 60ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .85rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: .98rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
  cursor: pointer;
}
.btn svg { width: 1.05em; height: 1.05em; flex: none; }

.btn-solid {
  background: var(--graphite);
  color: var(--white);
}
.btn-solid:hover { background: var(--rust-deep); }

.btn-rust {
  background: var(--rust);
  color: var(--white);
}
.btn-rust:hover { background: var(--rust-deep); }

.btn-ghost {
  background: transparent;
  color: var(--graphite);
  border-color: var(--hairline);
}
.btn-ghost:hover { border-color: var(--graphite); background: var(--ivory-2); }

.btn-line {
  background: transparent;
  color: var(--graphite);
  border-color: var(--graphite);
}
.btn-line:hover { background: var(--graphite); color: var(--white); }

/* Text arrow link */
.arrow-link {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--graphite);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding-block: .35rem;
}
.arrow-link .arr { transition: transform 180ms ease; }
.arrow-link:hover .arr { transform: translateX(4px); }
.arrow-link:hover { color: var(--rust-deep); }

/* ---------- Navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(244, 239, 228, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .9rem;
}
.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -.02em;
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
}
.logo .dot { color: var(--rust); }
.logo small {
  font-family: var(--font-mono);
  font-size: .62rem;
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--steel);
  text-transform: uppercase;
}

.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a {
  font-size: .92rem;
  font-weight: 500;
  color: var(--graphite);
  text-decoration: none;
  transition: color 150ms ease;
}
.nav-links a:hover { color: var(--rust-deep); }

/* Language toggle */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
}
.lang-toggle button {
  background: transparent;
  border: 0;
  padding: .4rem .7rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--steel);
  transition: background-color 150ms ease, color 150ms ease;
}
.lang-toggle button[aria-pressed="true"] { background: var(--graphite); color: var(--white); }

/* Mobile nav */
.nav-burger { display: none; background: none; border: 0; padding: .5rem; }
.nav-burger svg { width: 22px; height: 22px; color: var(--graphite); }
.nav-close { display: none; background: none; border: 0; padding: .5rem; }
.nav-close svg { width: 22px; height: 22px; color: var(--graphite); }

@media (max-width: 820px) {
  .nav-burger { display: inline-flex; }
  .nav-links {
    position: fixed;
    inset: 0;
    z-index: var(--z-menu);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    background: var(--ivory);
    transform: translateX(100%);
    transition: transform 260ms ease;
    padding: var(--pad);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-family: var(--font-display); font-size: 1.7rem; }
  .nav-links .lang-toggle { margin-top: .5rem; }
  .nav-close { display: inline-flex; position: absolute; top: 1rem; right: 1rem; }
  .nav-close svg { width: 22px; height: 22px; }
}

/* ---------- Hero ---------- */
.hero { padding-block: var(--space-5) var(--space-4); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
}
.hero-copy { display: grid; gap: var(--space-2); align-content: start; }
.hero-copy h1 {
  font-size: clamp(2.5rem, 5.6vw, 4.6rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.hero-copy h1 em { font-style: italic; color: var(--rust-deep); }
.hero-copy .lede { max-width: 46ch; color: var(--graphite-soft); font-size: 1.12rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-2); }

.hero-fig { position: relative; }
.hero-fig .frame {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: var(--ivory-2);
}
.hero-fig img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.hero-fig .provenance { margin-top: var(--space-2); }

.hero-trust {
  margin-top: var(--space-4);
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  padding-top: var(--space-2);
}
.hero-trust .item { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); }
.hero-trust .item strong { color: var(--graphite); font-weight: 500; }

@media (max-width: 820px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-fig { order: -1; }
  .hero-fig img { aspect-ratio: 16 / 11; }
}

/* ---------- Green loop strip (signature) ---------- */
.loop { background: var(--graphite); color: var(--ivory); }
.loop .loop-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: var(--space-4); }
.loop .loop-head .kicker { color: var(--patina-light); }
.loop .loop-head .kicker::before { background: var(--patina); }
.loop h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }

.loop-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
.loop-steps::before {
  content: "";
  position: absolute;
  top: 17px; left: 4%; right: 4%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--patina) 0 6px, transparent 6px 12px);
}
.loop-step { display: grid; gap: .6rem; padding-inline: .6rem; position: relative; }
.loop-step .num {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: .72rem;
  color: var(--ivory);
  background: var(--patina-deep);
  border: 1px solid var(--patina);
  border-radius: 50%;
  z-index: 1;
}
.loop-step .step-label { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ivory); }
.loop-step .step-desc { font-size: .85rem; line-height: 1.5; color: rgba(244,239,228,.72); }

@media (max-width: 820px) {
  .loop-steps { grid-template-columns: 1fr; gap: var(--space-3); }
  .loop-steps::before { display: none; }
  .loop-step { padding-inline: 0; grid-template-columns: 34px 1fr; grid-template-areas: "num label" "num desc"; column-gap: .9rem; }
  .loop-step .num { grid-area: num; }
  .loop-step .step-label { grid-area: label; align-self: end; }
  .loop-step .step-desc { grid-area: desc; }
}

/* ---------- Collections grid (portfolio pattern) ---------- */
.col-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2.5vw, 2rem); }

.col-card { text-decoration: none; display: block; }
.col-card .media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--ivory-2);
  border: 1px solid var(--hairline-soft);
}
.col-card .media img { width: 100%; height: 100%; object-fit: cover; transition: transform 400ms ease; }
.col-card:hover .media img { transform: scale(1.045); }
.col-card .overlay {
  position: absolute; inset: 0;
  display: flex; align-items: flex-end;
  padding: 1rem;
  background: linear-gradient(to top, rgba(38,38,31,.62), transparent 55%);
  opacity: 0;
  transition: opacity 200ms ease;
}
.col-card:hover .overlay { opacity: 1; }
.col-card .overlay span {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--white);
  display: inline-flex; align-items: center; gap: .5rem;
}
.col-card .overlay span::after { content: "→"; }
.col-card .meta { margin-top: .9rem; display: grid; gap: .3rem; }
.col-card .meta h3 { font-size: 1.35rem; }
.col-card .meta .count { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); }

@media (max-width: 820px) { .col-grid { grid-template-columns: 1fr; } }
@media (min-width: 821px) and (max-width: 1080px) { .col-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Product rows (reclaimed collection) ---------- */
.prod-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  padding-block: var(--space-4);
}
.prod-row + .prod-row { border-top: 1px solid var(--hairline-soft); }
.prod-row.flip .prod-media { order: 2; }
.prod-media { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--hairline-soft); background: var(--ivory-2); }
.prod-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.prod-info { display: grid; gap: var(--space-2); align-content: center; }
.prod-info h3 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.prod-info .badge {
  justify-self: start;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--patina-deep);
  border: 1px solid var(--patina);
  border-radius: 999px;
  padding: .3rem .7rem;
}
.prod-specs {
  display: grid; gap: .45rem;
  margin-top: .35rem;
}
.prod-specs .spec { display: flex; gap: .6rem; font-family: var(--font-mono); font-size: .78rem; color: var(--steel); }
.prod-specs .spec .k { color: var(--graphite-soft); text-transform: uppercase; letter-spacing: .06em; min-width: 6.5rem; }

@media (max-width: 820px) {
  .prod-row { grid-template-columns: 1fr; }
  .prod-row.flip .prod-media { order: 0; }
}

/* ---------- Stats strip ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.stat { border-left: 1px solid var(--hairline); padding-left: var(--space-3); }
.stat .n { font-family: var(--font-display); font-size: clamp(2.2rem, 4vw, 3.2rem); color: var(--rust-deep); line-height: 1; }
.stat .l { margin-top: .5rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--steel); }
@media (max-width: 820px) { .stats { grid-template-columns: 1fr; } }

/* ---------- Process steps (sequence) ---------- */
.proc-list { display: grid; gap: 0; counter-reset: proc; }
.proc-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: clamp(1rem, 3vw, 3rem);
  padding-block: var(--space-4);
  border-top: 1px solid var(--hairline-soft);
  counter-increment: proc;
  align-items: start;
}
.proc-item .proc-no { font-family: var(--font-mono); font-size: .86rem; color: var(--rust-deep); }
.proc-item .proc-no::before { content: "0" counter(proc) "."; }
.proc-item h3 { font-size: clamp(1.35rem, 2.4vw, 1.8rem); margin-bottom: .6rem; }
.proc-item p { color: var(--graphite-soft); max-width: 62ch; }
.proc-item .proc-tag { display: inline-block; margin-bottom: .6rem; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--patina-deep); }
@media (max-width: 820px) { .proc-item { grid-template-columns: 56px 1fr; } }

/* ---------- Journal ---------- */
.journal-grid { display: grid; gap: 0; }
.jpost {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: center;
  padding-block: var(--space-3);
  border-top: 1px solid var(--hairline-soft);
  text-decoration: none;
  transition: background-color 150ms ease;
}
.jpost:hover { background: var(--ivory-2); }
.jpost:last-of-type { border-bottom: 1px solid var(--hairline-soft); }
.jpost .no { font-family: var(--font-mono); font-size: .8rem; color: var(--rust-deep); }
.jpost h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
.jpost .ex { margin-top: .35rem; color: var(--graphite-soft); font-size: .95rem; max-width: 62ch; }
.jpost .meta { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); }
.jpost .arr { color: var(--rust-deep); }
@media (max-width: 820px) {
  .jpost { grid-template-columns: 48px 1fr; }
  .jpost .arr { display: none; }
}

/* ---------- Split image/text band ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 4rem); align-items: center; }
.split img { border-radius: var(--radius); width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border: 1px solid var(--hairline-soft); }
.split .body { display: grid; gap: var(--space-2); }
.split .body p { color: var(--graphite-soft); max-width: 58ch; }
.split .body ul { display: grid; gap: .6rem; margin-top: .35rem; }
.split .body li { display: flex; gap: .7rem; align-items: baseline; color: var(--graphite-soft); }
.split .body li::before { content: "—"; color: var(--rust); flex: none; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }
.split.flip img { order: 2; }
.split-list .split { padding-block: var(--space-4); }
.split-list .split + .split { border-top: 1px solid var(--hairline-soft); }
.split .body h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: .35rem; }
.split .body .count { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--rust-deep); }

/* ---------- CTA band ---------- */
.cta-band {
  text-align: center;
  padding-block: var(--space-6);
  border-top: 1px solid var(--hairline-soft);
}
.cta-band h2 { font-size: clamp(2rem, 4.4vw, 3.4rem); max-width: 22ch; margin-inline: auto; }
.cta-band h2 em { font-style: italic; color: var(--rust-deep); }
.cta-band p { color: var(--graphite-soft); max-width: 52ch; margin: var(--space-2) auto 0; }
.cta-band .btn-row { display: flex; justify-content: center; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-3); }

/* ---------- Contact form ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2rem, 5vw, 5rem); }
.contact-side { display: grid; gap: var(--space-2); align-content: start; }
.contact-side .block { border-top: 1px solid var(--hairline); padding-top: var(--space-2); margin-top: var(--space-2); }
.contact-side .block h4 { font-size: 1.05rem; margin-bottom: .4rem; }
.contact-side .block p, .contact-side .block a { color: var(--graphite-soft); font-size: .95rem; }
.contact-side .block a { text-decoration: none; border-bottom: 1px solid var(--hairline); }
.contact-side .block a:hover { color: var(--rust-deep); border-color: var(--rust); }

.form { display: grid; gap: var(--space-3); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2); }
.form .field { display: grid; gap: .45rem; }
.form label { display: grid; gap: .4rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--graphite-soft); }
.form input, .form select, .form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--graphite);
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: .8rem .9rem;
  transition: border-color 150ms ease;
  width: 100%;
}
.form textarea { min-height: 130px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none;
  border-color: var(--rust);
  box-shadow: 0 0 0 3px rgba(193, 80, 46, 0.14);
}
.form .note { font-family: var(--font-mono); font-size: .72rem; color: var(--steel); }
.form .form-status[hidden] { display: none; }
.form .form-status { font-family: var(--font-mono); font-size: .78rem; padding: .8rem 1rem; border-radius: var(--radius); }
.form .form-status.ok { background: rgba(116,128,111,.16); color: var(--patina-deep); }
.form .form-status.err { background: rgba(193,80,46,.14); color: var(--rust-deep); }
@media (max-width: 820px) {
  .contact-grid { grid-template-columns: 1fr; }
  .form .row { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--hairline); padding-block: var(--space-4) var(--space-3); margin-top: var(--space-5); }
.footer-grid { display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between; align-items: flex-start; }
.footer-brand { max-width: 34ch; display: grid; gap: .8rem; }
.footer-brand .tagline { font-family: var(--font-display); font-style: italic; color: var(--graphite-soft); }
.footer-green { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--patina-deep); }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); font-size: .92rem; }
.footer-links a { color: var(--graphite-soft); text-decoration: none; }
.footer-links a:hover { color: var(--rust-deep); }
.footer-meta { margin-top: var(--space-4); padding-top: var(--space-2); border-top: 1px solid var(--hairline-soft); display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); }
.footer-meta .green { color: var(--patina-deep); }

/* ---------- Reveal (scroll) ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 500ms ease, transform 500ms ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Page hero (interior pages) ---------- */
.page-hero { padding-block: var(--space-5) var(--space-4); border-bottom: 1px solid var(--hairline-soft); }
.page-hero .kicker { margin-bottom: var(--space-2); }
.page-hero h1 { font-size: clamp(2.2rem, 4.8vw, 3.8rem); max-width: 22ch; }
.page-hero .lede { margin-top: var(--space-2); color: var(--graphite-soft); max-width: 60ch; font-size: 1.1rem; }