:root {
  --bg: #ffffff;
  --fg: #0a0a0a;
  --fg-muted: #8a8a8a;
  --border: #e2e2e2;
  --gap: 6px;
  --cols: 4;
  --header-h: 92px;
  --font: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --transition: 220ms ease;
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-solid: rgba(255, 255, 255, 0.22);
  --glass-border: rgba(10, 10, 10, 0.12);
  --glass-blur: blur(20px);
  --glass-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --fg: #f2f2f2;
  --fg-muted: #767676;
  --border: #232323;
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-solid: rgba(255, 255, 255, 0.16);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

.icon-sprite { display: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 0.02em;
  transition: background var(--transition), color var(--transition);
}

a { color: inherit; text-decoration: none; cursor: pointer; }
button { font-family: inherit; font-size: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; letter-spacing: 0.02em; }
p { margin: 0 0 8px; }

/* ---------- Topbar ---------- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  z-index: 40;
}
.topbar .logo,
.topbar .menu-toggle {
  color: var(--fg);
  text-transform: uppercase;
  font-weight: 500;
}
/* On the hero page only: the topbar sits over a fixed dark photo rather
   than the page's own background, so logo/menu need to stay white and
   self-invert via blend mode instead of following the theme color. */
body.has-hero .topbar .logo,
body.has-hero .topbar .menu-toggle {
  color: #fff;
  mix-blend-mode: difference;
}
.logo {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif);
  font-weight: 400;
  text-transform: none;
  font-size: 24px;
  letter-spacing: 0.02em;
}

.menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: -9px;
}
.burger {
  position: relative;
  width: 20px;
  height: 14px;
  display: block;
}
.burger-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition), top var(--transition);
}
.burger-line:nth-child(1) { top: 0; }
.burger-line:nth-child(2) { top: 6px; }
.burger-line:nth-child(3) { top: 12px; }
body.menu-open .burger-line:nth-child(1) { top: 6px; transform: rotate(45deg); }
body.menu-open .burger-line:nth-child(2) { opacity: 0; }
body.menu-open .burger-line:nth-child(3) { top: 6px; transform: rotate(-45deg); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.lang-wrap { position: relative; }
.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 10px;
  border: 1px solid var(--glass-border);
  border-radius: 0;
  background: var(--glass-bg-solid);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  color: var(--fg);
  font-size: 10px;
  letter-spacing: 0.05em;
  transition: border-color var(--transition), background var(--transition);
}
.lang-flag-icon {
  width: 16px;
  height: 11.2px;
  flex-shrink: 0;
  display: block;
  outline: 1px solid rgba(128, 128, 128, 0.35);
  outline-offset: -0.5px;
}
.lang-arrow { width: 8px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform var(--transition); }
.lang-btn.open .lang-arrow { transform: rotate(180deg); }

.lang-dd {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 170px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
  border-radius: 0;
  overflow: hidden;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.lang-dd.open { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-opt {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 11px;
  cursor: pointer;
  color: var(--fg);
}
.lang-opt:hover { background: var(--glass-border); }
.lang-opt.active { color: var(--fg-muted); text-decoration: underline; text-underline-offset: 2px; }
.lang-opt-code { color: var(--fg-muted); font-size: 9px; width: 20px; flex-shrink: 0; }

/* Sun/moon dark-mode switch — frosted-glass pill, isolated from .topbar
   blending so it stays a stable, always-legible control. */
.theme-switch {
  position: relative;
  width: 42px;
  height: 22px;
  border-radius: 0;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg-solid);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  flex-shrink: 0;
  transition: border-color var(--transition), background var(--transition);
}
.ts-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 11px;
  height: 11px;
  color: var(--fg);
  opacity: 0.5;
  pointer-events: none;
}
.ts-icon svg { width: 100%; height: 100%; display: block; }
.ts-sun-bg { left: 5px; }
.ts-moon-bg { right: 5px; }

.ts-knob {
  position: absolute;
  top: 1px;
  left: 1px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--fg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
}
[data-theme="dark"] .ts-knob { transform: translateX(20px); }

.ts-knob-icon { width: 11px; height: 11px; color: var(--bg); }
.ts-knob-moon { display: none; }
[data-theme="dark"] .ts-knob-sun { display: none; }
[data-theme="dark"] .ts-knob-moon { display: block; }

/* ---------- Side panel ---------- */
.panel {
  position: fixed;
  top: 0; left: 0;
  width: min(320px, 84vw);
  height: 100vh;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  border-right: 1px solid var(--glass-border);
  transform: translateX(-100%);
  transition: transform var(--transition);
  z-index: 30;
  overflow-y: auto;
  padding: calc(var(--header-h) + 12px) 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}
body.menu-open .panel { transform: translateX(0); }

.panel-section { display: flex; flex-direction: column; gap: 2px; }
.panel-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
}
.panel-row a { flex: 1; }
.panel-row:hover { color: var(--fg); }
.panel-row.active a { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Main content ---------- */
.content { padding-top: calc(var(--header-h) + 80px); min-height: 100vh; }

[hidden] { display: none !important; }

/* Grid view */
.grid-view {
  display: grid;
  grid-template-columns: repeat(var(--cols), 1fr);
  gap: var(--gap);
  padding: 0 var(--gap) var(--gap);
}
.tile {
  cursor: pointer;
  padding-bottom: 20px;
}
.tile-media {
  position: relative;
  aspect-ratio: 1417 / 2126;
  overflow: hidden;
  background: var(--border);
}
.tile-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 500ms ease, filter 500ms ease;
  filter: grayscale(0.15);
}
.tile:hover .tile-media img { transform: scale(1.035); filter: grayscale(0); }
.tile-caption {
  padding: 10px 2px 0;
  text-transform: uppercase;
  line-height: 1.6;
  font-size: 9px;
  letter-spacing: 0.01em;
}
.tc-title { color: var(--fg); }
.tc-cat { color: var(--fg-muted); }

/* ---------- Hero (home) ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  background-image: url('../images/hero-placeholder.svg');
  background-size: cover;
  background-position: center;
  background-color: #141414;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
}
.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 16px;
}
.hero-btn {
  padding: 14px 32px;
  border: 1px solid #fff;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 12px;
  transition: background var(--transition), color var(--transition);
}
.hero-btn:hover { background: #fff; color: #0a0a0a; }
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; max-width: 240px; }
}

/* ---------- Plain gallery (Galería) ---------- */
.plain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px 32px;
  padding: 0 24px 60px;
}
.plain-grid figure { margin: 0; cursor: pointer; overflow: hidden; }
.plain-grid img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 500ms ease, filter 500ms ease;
  filter: grayscale(0.15);
}
.plain-grid figure:hover img { transform: scale(1.02); filter: grayscale(0); }
@media (max-width: 700px) {
  .plain-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- About ---------- */
.about-content {
  max-width: 640px;
  padding: 0 24px 60px;
}
.about-content h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(32px, 6vw, 56px);
  margin: 0 0 24px;
}
.about-content p { line-height: 1.7; max-width: 60ch; }
.about-content .contact-links {
  margin-top: 24px;
  text-transform: uppercase;
  line-height: 2;
}
.about-content .contact-links a { border-bottom: 1px solid var(--border); }
.about-content .contact-links a:hover { color: var(--fg-muted); }

.about-content--center {
  margin: 0 auto;
  text-align: center;
}
.about-content--center p { margin-left: auto; margin-right: auto; }

/* ---------- Footer ---------- */
.sitefooter {
  padding: 24px 20px 40px;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 50;
  display: none;
  padding: calc(var(--header-h) + 12px) 24px 40px;
  overflow-y: auto;
}
.lightbox.open { display: block; }
.lb-close {
  position: fixed;
  top: 20px; right: 20px;
  text-transform: uppercase;
  z-index: 51;
}
.lb-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  font-size: 32px;
  z-index: 51;
  color: var(--fg-muted);
}
.lb-nav:hover { color: var(--fg); }
.lb-prev { left: 20px; }
.lb-next { right: 20px; }
.lb-body {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.lb-image { width: 100%; }
.lb-image img { width: 100%; height: auto; display: block; }
.lb-title { text-transform: uppercase; font-weight: 500; font-size: 14px; }
.lb-sub { text-transform: uppercase; color: var(--fg-muted); margin-top: 4px; }
.lb-desc { margin-top: 12px; color: var(--fg-muted); max-width: 60ch; line-height: 1.6; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  :root { --cols: 3; }
}
@media (max-width: 600px) {
  :root { --cols: 2; --gap: 4px; }
  :root { --header-h: 76px; }
  .logo { font-size: 13px; }
  .panel-row { padding: 12px 0; }
  .lb-nav { font-size: 26px; }
  .lb-prev { left: 8px; }
  .lb-next { right: 8px; }
  .lb-close { top: 12px; right: 12px; }
}