/* =============================================================
   Mendoza Construcciones — Archetype 07 · Brutalist Grid
   Palette: warm concrete + safety orange. Signature: hover invert.
   ============================================================= */

/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:        #f2efe9;   /* concrete white */
  --bg-2:      #e7e2d8;   /* poured concrete */
  --ink:       #16130e;   /* warm near-black */
  --ink-soft:  #3a352d;
  --ink-mute:  #6d675b;
  --accent:    #d64220;   /* safety orange */
  --accent-2:  #f2a900;   /* hi-vis amber (markers only) */
  --line:      #16130e;   /* hairlines — full opacity */
  --line-soft: rgba(22, 19, 14, 0.18);

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", "Menlo", monospace;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --wrap: 1320px;
  --gutter: clamp(1.1rem, 4vw, 2.75rem);
  --hair: 1px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.02; letter-spacing: -0.02em; font-weight: 700; }
::selection { background: var(--ink); color: var(--bg); }

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

/* =============================================================
   3. Utilities
   ============================================================= */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--ink); color: var(--bg);
  z-index: 9999; font-weight: 600; font-family: var(--mono);
}
.skip-link:focus { top: 1rem; }

.kicker {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* =============================================================
   4. Typography scale
   ============================================================= */
.hero-title {
  font-family: var(--display);
  font-size: clamp(2.9rem, 11vw, 7.4rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}
.hero-title em {
  font-style: normal;
  color: var(--accent);
}
.block-title {
  font-family: var(--display);
  font-size: clamp(1.7rem, 4.6vw, 3.1rem);
  letter-spacing: -0.03em;
}

/* =============================================================
   5. Components
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: .85rem 1.3rem;
  border: var(--hair) solid var(--line);
  background: var(--ink);
  color: var(--bg);
  transition: background .12s linear, color .12s linear;
}
.btn:hover { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.btn-block { width: 100%; justify-content: space-between; }
.btn-head { display: none; }

.wordmark {
  display: inline-flex;
  flex-direction: column;
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 0.98;
  font-size: 1.02rem;
}
.wordmark-2 { color: var(--ink-mute); }

/* =============================================================
   6. Header
   ============================================================= */
.site-head {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: var(--hair) solid var(--line);
}
.site-head.is-stuck { box-shadow: 0 1px 0 var(--line); }
.head-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 62px;
}
.nav {
  display: none;
  margin-left: auto;
  gap: .2rem;
  font-family: var(--mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav a {
  padding: .45rem .7rem;
  border: var(--hair) solid transparent;
  transition: background .1s linear, color .1s linear;
}
.nav a:hover { background: var(--ink); color: var(--bg); }

.burger {
  margin-left: auto;
  width: 44px; height: 44px;
  display: grid;
  place-content: center;
  gap: 5px;
  border: var(--hair) solid var(--line);
}
.burger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  transition: transform .2s var(--ease-out), opacity .2s;
}
.burger[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  border-top: var(--hair) solid var(--line);
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: .9rem;
}
.mobile-menu:not([hidden]) { display: grid; }
.mobile-menu a {
  padding: 1rem var(--gutter);
  border-bottom: var(--hair) solid var(--line-soft);
}
.mobile-menu a:last-child { border-bottom: 0; background: var(--ink); color: var(--bg); }
.mobile-menu a:active { background: var(--accent); color: var(--bg); }

/* =============================================================
   7. Hero
   ============================================================= */
.hero { border-bottom: var(--hair) solid var(--line); }
.hero-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-top: clamp(2.4rem, 7vw, 5rem);
  padding-bottom: clamp(2.4rem, 6vw, 4rem);
}
.hero-aside {
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
  align-items: flex-start;
  max-width: 42ch;
}
.hero-aside p { color: var(--ink-soft); font-size: 1.02rem; }

.hero-figure {
  position: relative;
  border-top: var(--hair) solid var(--line);
  background: var(--bg-2);
}
.hero-figure img {
  width: 100%;
  height: clamp(240px, 46vw, 560px);
  object-fit: cover;
  object-position: center 28%;
  filter: grayscale(1) contrast(1.06);
}
.hero-cap {
  position: absolute;
  left: 0; bottom: 0;
  max-width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: .3rem 1.4rem;
  padding: .55rem var(--gutter);
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* =============================================================
   8. Blocks / sections
   ============================================================= */
.block {
  padding-block: clamp(3rem, 9vw, 6.5rem);
  border-bottom: var(--hair) solid var(--line);
}
.block-head {
  display: grid;
  gap: .9rem;
  max-width: 34ch;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

/* --- Service rows (01) --- */
.rows { list-style: none; border-top: var(--hair) solid var(--line); }
.row {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: .3rem 1rem;
  padding: 1.5rem 0;
  border-bottom: var(--hair) solid var(--line);
  transition: background .1s linear, color .1s linear, padding .18s var(--ease-out);
}
.row-n { font-family: var(--mono); font-size: .8rem; color: var(--accent); padding-top: .35rem; }
.row-title { font-family: var(--display); font-size: clamp(1.4rem, 3.4vw, 2.1rem); }
.row-desc { grid-column: 2; color: var(--ink-mute); max-width: 60ch; }
@media (hover: hover) and (pointer: fine) {
  .row:hover { background: var(--ink); color: var(--bg); padding-inline: 1.1rem; }
  .row:hover .row-desc { color: var(--bg); }
  .row:hover .row-n { color: var(--accent-2); }
}

/* --- Obra grid (02) --- */
.obra-grid {
  display: grid;
  gap: 0;
  border: var(--hair) solid var(--line);
  border-bottom: 0;
}
.obra-cell {
  border-bottom: var(--hair) solid var(--line);
  display: grid;
}
.obra-photo { overflow: hidden; background: var(--bg-2); border-bottom: var(--hair) solid var(--line); }
.obra-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  transition: filter .3s var(--ease-out), transform .5s var(--ease-out);
}
.obra-meta { padding: 1.15rem; }
.obra-meta h3 {
  font-family: var(--display);
  font-size: 1.4rem;
  margin-bottom: .7rem;
}
.obra-meta dl {
  display: grid;
  gap: .28rem;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: 0.03em;
}
.obra-meta dl > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: var(--hair) solid var(--line-soft);
  padding-top: .28rem;
  text-transform: uppercase;
}
.obra-meta dt { color: var(--ink-mute); }
.obra-meta dd { text-align: right; }
@media (hover: hover) and (pointer: fine) {
  .obra-cell:hover .obra-photo img { filter: grayscale(0) contrast(1); transform: scale(1.03); }
}

/* --- Steps (03) --- */
.steps { list-style: none; display: grid; gap: 0; border-top: var(--hair) solid var(--line); }
.step {
  display: grid;
  gap: .4rem;
  padding: 1.6rem 0;
  border-bottom: var(--hair) solid var(--line);
}
.step-n {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 500;
  line-height: 1;
  color: var(--line-soft);
}
.step-title { font-family: var(--display); font-size: clamp(1.2rem, 2.6vw, 1.6rem); }
.step-desc { color: var(--ink-mute); max-width: 52ch; }

/* --- Numbers (04) --- */
.block-nums { background: var(--ink); color: var(--bg); }
.block-nums .kicker { color: rgba(242, 239, 233, 0.6); }
.block-nums .block-title { color: var(--bg); }
.nums {
  display: grid;
  border: var(--hair) solid var(--bg);
  border-bottom: 0;
}
.num {
  padding: 1.5rem;
  border-bottom: var(--hair) solid var(--bg);
  display: grid;
  gap: .4rem;
}
.num-value {
  font-family: var(--display);
  font-size: clamp(2.6rem, 9vw, 4.4rem);
  line-height: 0.9;
  color: var(--accent-2);
  letter-spacing: -0.03em;
}
.num-label {
  font-family: var(--mono);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(242, 239, 233, 0.75);
  max-width: 22ch;
}

/* --- Contact (05) --- */
.contact-grid { display: grid; gap: clamp(2rem, 6vw, 4rem); }
.contact-lead { color: var(--ink-mute); max-width: 46ch; margin-top: 1rem; }
.contact-list {
  margin-top: 2rem;
  display: grid;
  gap: 0;
  border-top: var(--hair) solid var(--line);
  font-family: var(--mono);
  font-size: .82rem;
}
.contact-list > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: var(--hair) solid var(--line-soft);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.contact-list dt { color: var(--ink-mute); }
.contact-list dd { text-align: right; }
.contact-list a { border-bottom: var(--hair) solid var(--accent); }

/* Form */
.form {
  display: grid;
  gap: 1.15rem;
  border: var(--hair) solid var(--line);
  padding: clamp(1.2rem, 4vw, 2rem);
  background: var(--bg-2);
  align-self: start;
}
.field { display: grid; gap: .4rem; }
.field label {
  font-family: var(--mono);
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}
.field .opt { color: var(--ink-mute); text-transform: none; letter-spacing: 0; }
.field input,
.field select,
.field textarea {
  font: inherit;
  padding: .7rem .8rem;
  border: var(--hair) solid var(--line);
  background: var(--bg);
  color: var(--ink);
  border-radius: 0;
}
.field textarea { resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; }
.field-err {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.field.is-invalid input,
.field.is-invalid textarea { border-color: var(--accent); border-width: 2px; }

.btn-submit {
  justify-content: center;
  padding: 1rem;
  margin-top: .3rem;
}
.btn-check { display: none; }
.btn-submit.is-done { background: var(--accent); border-color: var(--accent); }
.btn-submit.is-done .btn-check { display: block; }
.form-note {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--ink-soft);
  min-height: 1.2em;
}
.form-note.is-error { color: var(--accent); }

/* =============================================================
   9. Footer
   ============================================================= */
.site-foot { background: var(--bg); }
.foot-grid {
  display: grid;
  gap: 2rem;
  padding-block: clamp(2.5rem, 7vw, 4rem);
}
.foot-brand p { color: var(--ink-mute); margin-top: .8rem; max-width: 32ch; font-size: .9rem; }
.foot-h {
  font-family: var(--mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  margin-bottom: .7rem;
}
.foot-col { display: grid; gap: .35rem; align-content: start; font-size: .92rem; }
.foot-col a { border-bottom: var(--hair) solid transparent; width: fit-content; }
.foot-col a:hover { border-color: var(--accent); }
.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 2rem;
  justify-content: space-between;
  padding-block: 1.1rem;
  border-top: var(--hair) solid var(--line);
  font-family: var(--mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
}
.footer-credits a { color: var(--ink); border-bottom: var(--hair) solid var(--accent); }

/* =============================================================
   10. Coords readout (signature support — desktop only)
   ============================================================= */
.coords {
  position: fixed;
  right: .7rem;
  bottom: .7rem;
  z-index: 90;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  background: var(--bg);
  border: var(--hair) solid var(--line-soft);
  padding: .25rem .45rem;
  display: none;
  pointer-events: none;
  transition: opacity .3s linear;
}

/* =============================================================
   11. Reveal (non-intrusive — content shows even without JS/anim)
   ============================================================= */
.is-ready [data-reveal] { opacity: 0; transform: translateY(14px); }
.is-ready [data-reveal].is-in { opacity: 1; transform: none; transition: opacity .5s var(--ease-out), transform .5s var(--ease-out); }

/* =============================================================
   12. Responsive
   ============================================================= */
@media (min-width: 720px) {
  .steps { grid-template-columns: 1fr 1fr; }
  .step { padding-inline: 1.4rem; border-right: var(--hair) solid var(--line); }
  .step:nth-child(2n) { border-right: 0; }
  .nums { grid-template-columns: 1fr 1fr; }
  .num { border-right: var(--hair) solid var(--bg); }
  .num:nth-child(2n) { border-right: 0; }
  .obra-grid { grid-template-columns: 1fr 1fr; }
  .obra-cell { border-right: var(--hair) solid var(--line); }
  .obra-cell:nth-child(2n) { border-right: 0; }
  .foot-grid { grid-template-columns: 2fr 1fr 1fr; }
  .hero-cap { font-size: .72rem; }
}

@media (min-width: 960px) {
  .burger { display: none; }
  .mobile-menu { display: none !important; }
  .nav { display: flex; }
  .btn-head { display: inline-flex; margin-left: .4rem; }
  .head-inner .nav { margin-left: auto; }

  .hero-grid {
    grid-template-columns: 1.55fr 1fr;
    align-items: end;
  }
  .hero-aside { border-left: var(--hair) solid var(--line); padding-left: clamp(1.5rem, 3vw, 2.5rem); }

  .row { grid-template-columns: 4rem 20ch 1fr; align-items: baseline; }
  .row-desc { grid-column: 3; }

  .contact-grid { grid-template-columns: 1fr 1fr; align-items: start; }

  .is-ready .coords { display: block; }
}

@media (min-width: 1280px) {
  .obra-grid { grid-template-columns: repeat(3, 1fr); }
  .obra-cell:nth-child(2n) { border-right: var(--hair) solid var(--line); }
  .obra-cell:nth-child(3n) { border-right: 0; }
}

/* =============================================================
   13. Reduced motion — only kill intrusive stuff.
   Hover invert, grayscale reveal, count-ups: all stay.
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .is-ready [data-reveal] { opacity: 1; transform: none; transition: none; }
  .obra-photo img { transition: filter .2s linear; }
}