/* ---------- Tokens ---------- */
:root {
  --concreto-950: #201F1D;
  --concreto-800: #4A4844;
  --concreto-500: #8C8980;
  --concreto-300: #C6C3BB;
  --concreto-200: #DEDBD3;
  --concreto-100: #EFEDE7;
  --blanco: #FFFFFF;
  --oxido-600: #B24A1E;
  --oxido-700: #953B16;

  --font-display: "Archivo", sans-serif;
  --font-body: "Source Sans 3", sans-serif;

  --max-width: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--concreto-950);
  background: var(--concreto-100);
  line-height: 1.55;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0 0 0.5em 0;
}

p { margin: 0 0 1em 0; }

a { color: inherit; }

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 2px;
  font-family: var(--font-body);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-accent {
  background: var(--oxido-600);
  color: var(--blanco);
}
.btn-accent:hover { background: var(--oxido-700); }

.btn-ghost {
  background: transparent;
  color: var(--blanco);
  border-color: rgba(255,255,255,0.55);
}
.btn-ghost:hover { border-color: var(--blanco); }

.btn-large {
  padding: 18px 40px;
  font-size: 1.05rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--concreto-950);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
  gap: 24px;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--blanco);
  text-decoration: none;
  line-height: 1.2;
  white-space: nowrap;
}
.wordmark span {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.72rem;
  color: var(--concreto-300);
  letter-spacing: 0.02em;
}

.main-nav {
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  color: var(--concreto-200);
  text-decoration: none;
  font-size: 0.95rem;
}
.main-nav a:hover { color: var(--blanco); }

.header-cta { flex-shrink: 0; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--blanco);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--concreto-800);
}

.hero-media {
  position: absolute;
  inset: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(32,31,29,0.35) 0%, rgba(32,31,29,0.55) 55%, rgba(32,31,29,0.9) 100%);
}

.hero-content {
  position: relative;
  color: var(--blanco);
  padding-top: 64px;
  padding-bottom: 72px;
  max-width: 760px;
}

.eyebrow {
  font-size: 0.9rem;
  color: var(--concreto-300);
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  color: var(--blanco);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--concreto-200);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 12px;
}

/* ---------- Servicios ---------- */
.servicios {
  padding: 88px 0;
}
.servicios h2 {
  font-size: 1.9rem;
  margin-bottom: 40px;
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--concreto-300);
  border: 1px solid var(--concreto-300);
}

.servicio {
  background: var(--concreto-100);
  padding: 32px;
}
.servicio h3 {
  font-size: 1.1rem;
  color: var(--oxido-600);
}
.servicio p {
  color: var(--concreto-800);
  margin-bottom: 0;
}

/* ---------- Obras ---------- */
.obras {
  padding: 88px 0;
  background: var(--concreto-950);
  color: var(--blanco);
}
.obras h2 { color: var(--blanco); font-size: 1.9rem; }
.section-sub {
  color: var(--concreto-300);
  margin-bottom: 40px;
}

.obras-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.obras-grid figure {
  margin: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--concreto-800);
}
.obras-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Sobre mí ---------- */
.sobre-mi {
  padding: 88px 0;
}
.sobre-mi-inner {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  align-items: center;
}
.sobre-mi-foto img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
  width: 100%;
}
.sobre-mi-texto h2 {
  font-size: 1.9rem;
}
.sobre-mi-texto p {
  color: var(--concreto-800);
  max-width: 56ch;
}

/* ---------- Contacto ---------- */
.contacto {
  padding: 96px 0 80px;
  background: var(--oxido-600);
  color: var(--blanco);
  text-align: center;
}
.contacto-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.contacto h2 {
  color: var(--blanco);
  font-size: 2rem;
}
.contacto .section-sub {
  color: rgba(255,255,255,0.85);
}
.contacto .btn-large {
  background: var(--concreto-950);
}
.contacto .btn-large:hover {
  background: var(--concreto-800);
}

.tel {
  margin-top: 20px;
  font-size: 0.95rem;
}
.tel a {
  text-decoration: underline;
}

.social-row {
  margin-top: 32px;
  display: flex;
  gap: 28px;
}
.social-row a {
  color: var(--blanco);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.5);
  padding-bottom: 2px;
}
.social-row a:hover {
  border-color: var(--blanco);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--concreto-950);
  color: var(--concreto-300);
  padding: 28px 0;
  font-size: 0.85rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-inner p { margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
  .sobre-mi-inner { grid-template-columns: 1fr; }
  .sobre-mi-foto { max-width: 320px; }
}

@media (max-width: 640px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--concreto-950);
    flex-direction: column;
    align-items: flex-start;
    padding: 8px 24px 24px;
    gap: 16px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .header-cta { display: none; }
  .nav-toggle { display: flex; }

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

  .social-row { flex-direction: column; gap: 14px; }
}