/* ===========================
   Sentidos en Disputa (SED)
   Sistema gráfico v2 — rojinegro
   =========================== */

:root {
  --negro:      #1A1714;
  --rojo:       #B5151F;
  --papel:      #EFE7D8;
  --gris-ceniza:#6E6A63;
  --oxido:      #B5651D;

  --font-display: 'Libre Baskerville', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --max-width:  1100px;
  --nav-height: 64px;
  --transition: 0.22s ease;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--papel);
  color: var(--negro);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--oxido);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--rojo); }

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

/* ===========================
   TIPOGRAFÍA
   =========================== */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--negro);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1rem, 2vw, 1.3rem); }

p { color: var(--negro); max-width: 68ch; }

strong { color: var(--negro); }

/* ===========================
   LAYOUT
   =========================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

main { flex: 1; }

section { padding: 72px 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rojo);
  display: block;
  margin-bottom: 14px;
}

.divider {
  width: 48px;
  height: 3px;
  background: var(--negro);
  margin: 20px 0;
}

/* Tajo diagonal — elemento de identidad del manual */
.tajo {
  width: 100%;
  height: 14px;
  background: repeating-linear-gradient(115deg, var(--negro) 0 2px, transparent 2px 14px);
  margin: 56px 0;
}

/* ===========================
   NAVEGACIÓN
   =========================== */

.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(239, 231, 216, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--negro);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--negro);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo span { color: var(--rojo); }

.nav-logo-icon { width: 30px; height: 30px; flex-shrink: 0; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris-ceniza);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--negro); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--negro);
  transition: all var(--transition);
}

/* ===========================
   HERO
   =========================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 78% 40%, rgba(181,21,31,0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 10px;
  background: repeating-linear-gradient(115deg, var(--negro) 0 2px, transparent 2px 14px);
}

.hero-content { max-width: 680px; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rojo);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--rojo);
}

.hero h1 { margin-bottom: 24px; }

.hero h1 em { font-style: italic; color: var(--rojo); }

.hero-description {
  font-family: var(--font-body);
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--gris-ceniza);
  margin-bottom: 40px;
  max-width: 54ch;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===========================
   BOTONES
   =========================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary { background: var(--negro); color: var(--papel); }
.btn-primary:hover { background: var(--rojo); color: var(--papel); }

.btn-outline { background: transparent; color: var(--negro); border: 2px solid var(--negro); }
.btn-outline:hover { border-color: var(--rojo); color: var(--rojo); }

/* ===========================
   CARDS
   =========================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.card {
  background: #fff;
  border: 1px solid rgba(26,23,20,0.12);
  border-top: 3px solid var(--negro);
  padding: 28px;
  transition: border-top-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover { border-top-color: var(--rojo); transform: translateY(-2px); }

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rojo);
  margin-bottom: 14px;
}

.card h3 { font-size: 1.05rem; margin-bottom: 10px; }

.card p { font-size: 0.9rem; color: var(--gris-ceniza); flex: 1; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--oxido);
  margin-top: 20px;
}

.card-link::after { content: '→'; transition: transform var(--transition); }
.card:hover .card-link::after { transform: translateX(4px); }

/* ===========================
   PAGE HEADER
   =========================== */

.page-header {
  padding-top: calc(var(--nav-height) + 72px);
  padding-bottom: 56px;
  border-bottom: 2px solid var(--negro);
}

.page-header h1 { margin-bottom: 14px; }

.page-header p { font-size: 1.05rem; color: var(--gris-ceniza); max-width: 58ch; }

/* ===========================
   BLOG
   =========================== */

.post-list { margin-top: 40px; }

.post-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(26,23,20,0.15);
  align-items: start;
}

.post-item:first-child { border-top: 1px solid rgba(26,23,20,0.15); }

.post-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gris-ceniza);
  padding-top: 3px;
}

.post-body h3 { margin-bottom: 8px; transition: color var(--transition); }
.post-item:hover .post-body h3 { color: var(--rojo); }

.post-body p { font-size: 0.92rem; color: var(--gris-ceniza); }

.post-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rojo);
  border: 1px solid rgba(181,21,31,0.35);
  padding: 3px 9px;
  background: transparent;
}

/* ===========================
   SOBRE MÍ
   =========================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 56px;
  align-items: start;
  margin-top: 56px;
}

.about-photo {
  aspect-ratio: 3/4;
  background: rgba(26,23,20,0.06);
  border: 1px solid rgba(26,23,20,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gris-ceniza);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  overflow: hidden;
}

.about-photo img { width: 100%; height: 100%; object-fit: cover; }

.about-text h2 { margin-bottom: 20px; }
.about-text p + p { margin-top: 16px; }
.about-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* ===========================
   MULTIMEDIA
   =========================== */

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.media-item {
  background: #fff;
  border: 1px solid rgba(26,23,20,0.12);
  border-top: 3px solid var(--negro);
  overflow: hidden;
  transition: border-top-color var(--transition);
}

.media-item:hover { border-top-color: var(--rojo); }

.media-thumb {
  aspect-ratio: 16/9;
  background: rgba(26,23,20,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.media-thumb iframe { width: 100%; height: 100%; border: none; }

.media-play {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(239,231,216,0.92);
  border: 2px solid var(--negro);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.media-play svg { width: 18px; height: 18px; fill: var(--negro); margin-left: 3px; }
.media-item:hover .media-play { background: var(--negro); }
.media-item:hover .media-play svg { fill: var(--papel); }

.media-info { padding: 18px 22px; }
.media-info h3 { font-size: 0.95rem; margin-bottom: 5px; }
.media-info p { font-size: 0.85rem; color: var(--gris-ceniza); }

/* ===========================
   CONTACTO
   =========================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-top: 56px;
  align-items: start;
}

.contact-info p { color: var(--gris-ceniza); margin-bottom: 28px; }

.contact-detail { display: flex; flex-direction: column; gap: 14px; }

.contact-detail a {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gris-ceniza);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.contact-detail a:hover { color: var(--rojo); }

.contact-icon {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(26,23,20,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

form { display: flex; flex-direction: column; gap: 18px; }

.form-group { display: flex; flex-direction: column; gap: 7px; }

label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris-ceniza);
}

input, textarea, select {
  background: #fff;
  border: 1px solid rgba(26,23,20,0.2);
  border-bottom: 2px solid var(--negro);
  color: var(--negro);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-bottom-color var(--transition);
  -webkit-appearance: none;
}

input:focus, textarea:focus, select:focus { border-bottom-color: var(--rojo); }

textarea { min-height: 130px; resize: vertical; }

/* ===========================
   FOOTER
   =========================== */

.site-footer {
  background: var(--negro);
  border-top: 3px solid var(--negro);
  padding: 48px 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--papel);
  font-weight: 700;
}

.footer-logo span { color: var(--rojo); }

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gris-ceniza);
  letter-spacing: 0.06em;
}

.footer-links { display: flex; gap: 24px; list-style: none; }

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris-ceniza);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--papel); }

/* ===========================
   LÍNEAS DE TRABAJO
   =========================== */

.lineas-grid { display: flex; flex-direction: column; margin-top: 40px; }

.linea-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 28px;
  padding: 36px 0;
  border-bottom: 1px solid rgba(26,23,20,0.15);
  align-items: start;
}

.linea-item:first-child { border-top: 1px solid rgba(26,23,20,0.15); }

.linea-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(26,23,20,0.12);
  line-height: 1;
  padding-top: 2px;
  transition: color var(--transition);
}

.linea-item:hover .linea-number { color: var(--rojo); }

.linea-content h3 { margin-bottom: 10px; font-size: 1.15rem; }

.linea-content p { font-size: 0.92rem; color: var(--gris-ceniza); max-width: 60ch; }

.linea-keywords { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }

/* ===========================
   PROYECTO
   =========================== */

.proyecto-body {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 56px;
  margin-top: 56px;
  align-items: start;
}

.proyecto-text p + p { margin-top: 18px; }
.proyecto-text h2 { margin-top: 40px; margin-bottom: 14px; }

.proyecto-sidebar { position: sticky; top: calc(var(--nav-height) + 28px); }

.sidebar-box {
  background: #fff;
  border: 1px solid rgba(26,23,20,0.12);
  border-top: 3px solid var(--negro);
  padding: 24px;
}

.sidebar-box h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rojo);
  margin-bottom: 14px;
}

.sidebar-box ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }

.sidebar-box li {
  font-size: 0.88rem;
  color: var(--gris-ceniza);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-family: var(--font-body);
}

.sidebar-box li::before { content: '·'; color: var(--rojo); flex-shrink: 0; line-height: 1.7; }

/* ===========================
   ANIMACIONES
   =========================== */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 0.55s ease forwards;
}

.fade-up:nth-child(2) { animation-delay: 0.1s; }
.fade-up:nth-child(3) { animation-delay: 0.2s; }
.fade-up:nth-child(4) { animation-delay: 0.3s; }

/* ===========================
   RESPONSIVE
   =========================== */

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--papel);
    border-bottom: 2px solid var(--negro);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 0;
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    pointer-events: none;
  }

  .nav-links.is-open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 24px; font-size: 0.8rem; }
  .nav-toggle { display: flex; }

  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-photo { aspect-ratio: 1/1; max-width: 260px; }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .proyecto-body { grid-template-columns: 1fr; }
  .proyecto-sidebar { position: static; }
  .post-item { grid-template-columns: 1fr; gap: 6px; }
  .linea-item { grid-template-columns: 1fr; gap: 6px; }
  .linea-number { font-size: 1.4rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  section { padding: 48px 0; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
}