/* ============================================================
   Max Álvarez — portfolio de fotografía
   Estilo minimalista (inspirado en la web original de Adobe Portfolio)
   ============================================================ */

:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #8a8a8a;
  --line: #e8e8e8;
  --pad: 2rem;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
               Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

/* ---------- Cabecera ---------- */
.site-header {
  padding: 2.4rem 0 1.6rem;
  text-align: center;
}

.brand {
  display: inline-block;
  margin-bottom: 1.4rem;
}

.brand img.logo {
  height: 52px;
  width: auto;
}

.brand .brand-text {
  font-size: 1.9rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.6rem;
  margin-bottom: 0.4rem;
}

.nav a {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.3rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav a:hover { color: var(--fg); border-bottom-color: var(--fg); }
.nav a.active { color: var(--fg); border-bottom-color: var(--fg); }

.social {
  display: flex;
  justify-content: center;
  gap: 1.1rem;
  margin-top: 0.9rem;
}

.social a {
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  color: var(--muted);
}

.social a:hover { color: var(--fg); }

/* ---------- Rejilla de portada (home) ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.4rem 2rem;
  padding: 2.6rem 0 3rem;
}

.tile { text-align: center; }

.tile .thumb {
  display: block;
  overflow: hidden;
  background: #f4f4f4;
}

.tile .thumb img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.5s ease, opacity 0.3s ease;
}

.tile .thumb:hover img { transform: scale(1.03); }

.tile .title {
  display: inline-block;
  margin-top: 0.85rem;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tile .subtitle {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.74rem;
  color: var(--muted);
}

/* ---------- Páginas de galería ---------- */
.page-title {
  padding: 2.2rem 0 0.6rem;
  text-align: center;
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-sub {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.8rem;
}

.gallery {
  columns: 3;
  column-gap: 1.6rem;
  padding: 0.6rem 0 3.4rem;
}

.gallery figure {
  break-inside: avoid;
  margin: 0 0 1.6rem;
  cursor: zoom-in;
}

.gallery figure img {
  width: 100%;
  transition: opacity 0.3s ease;
}

.gallery figure:hover img { opacity: 0.85; }

.gallery figure figcaption {
  margin-top: 0.45rem;
  font-size: 0.74rem;
  color: var(--muted);
}

/* ---------- Páginas de texto (About / Contact / Blog) ---------- */
.page {
  max-width: 660px;
  margin: 0 auto;
  padding: 2.4rem var(--pad) 4rem;
}

.page h2 {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 1.6rem 0 0.8rem;
}

.page p { margin-bottom: 1rem; }

.blog-post .cover {
  width: 100%;
  margin: 1.2rem 0 1.6rem;
}

.blog-post .cover img { width: 100%; }

/* ---------- Formulario de contacto ---------- */
.contact-form { margin-top: 1.4rem; }

.contact-form label {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 1.1rem 0 0.35rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fafafa;
  padding: 0.7rem 0.8rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--fg);
  border-radius: 0;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #bbb;
  background: #fff;
}

.contact-form textarea { min-height: 140px; resize: vertical; }

.contact-form button {
  margin-top: 1.3rem;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: #fff;
  padding: 0.7rem 2rem;
  font: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.contact-form button:hover { background: #fff; color: var(--fg); }

.form-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  cursor: zoom-out;
  padding: 3rem;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  box-shadow: 0 8px 60px rgba(0,0,0,0.5);
}

.lightbox .close {
  position: absolute;
  top: 1.4rem;
  right: 1.8rem;
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

/* ---------- Pie ---------- */
.site-footer {
  padding: 2.4rem 0 3rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--fg); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .gallery { columns: 2; }
}

@media (max-width: 560px) {
  :root { --pad: 1.2rem; }
  .grid { grid-template-columns: 1fr; }
  .gallery { columns: 1; }
  .brand img.logo { height: 40px; }
  .nav { gap: 0.3rem 1.1rem; }
}