/* ═══════════════════════════════════════════════════════════════════════
   DLC Software — main.css
   Traducción 1:1 desde Tailwind. Variables extraídas de globals.css.
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Variables ──────────────────────────────────────────────────────── */
:root {
  --c-ink:          #1a1a1a;
  --c-muted:        #6b6b6b;
  --c-line:         #e8e4dd;
  --c-accent:       #2d5a3d;
  --c-accent-light: #eaf3de;
  --c-bg:           #fafaf8;
  --c-white:        #ffffff;

  --font-display: 'DM Serif Display', serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  --max-w: 72rem;   /* max-w-6xl = 1152px */
  --px:    1.5rem;  /* px-6 */
}

/* ── Reset base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── Utilidades ─────────────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--px);
  width: 100%;
}

.text-accent { color: var(--c-accent); }

/* ── Botones globales ───────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: .75rem 1.5rem;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 500;
  border-radius: 2px;
  transition: opacity .2s;
}
.btn-primary:hover { opacity: .88; }

.btn-text {
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--c-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color .2s;
}
.btn-text:hover { color: var(--c-accent); }

/* ── Secciones — encabezados comunes ────────────────────────────────── */
.section-header { margin-bottom: 4rem; }

.section-label {
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4vw, 2.25rem);
  font-weight: 500;
  color: var(--c-ink);
}

/* ════════════════════════════════════════════════════════ HEADER / NAV */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background .3s, border-color .3s;
}
.site-header.scrolled {
  background: rgba(250,250,248,.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-line);
}

.nav-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--px);
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--c-ink);
  letter-spacing: -.01em;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--c-muted);
  transition: color .2s;
}
.nav-links a:hover { color: var(--c-ink); }

.nav-cta {
  display: none;
  align-items: center;
  padding: .5rem 1rem;
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 500;
  border: 1px solid var(--c-ink);
  color: var(--c-ink);
  border-radius: 2px;
  transition: background .2s, color .2s;
}
.nav-cta:hover { background: var(--c-ink); color: #fff; }

.nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--c-ink);
  padding: .5rem;
  display: flex;
}

/* Menú móvil */
.mobile-menu {
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
  padding: 1rem 1.5rem;
}
.mobile-menu[hidden] { display: none; }
.mobile-menu ul { display: flex; flex-direction: column; gap: 1rem; }
.mobile-menu a {
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--c-muted);
  transition: color .2s;
}
.mobile-menu a:hover { color: var(--c-ink); }
.mobile-menu .nav-cta {
  display: inline-flex;
  margin-top: .25rem;
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
  .nav-cta   { display: inline-flex; }
  .nav-toggle { display: none; }
}

/* ════════════════════════════════════════════════════════════════ HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 4rem;
  overflow: hidden;
  background: var(--c-bg);
}

/* Círculos decorativos */
.hero-circles {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translate(33%, -50%);
  pointer-events: none;
}
.circle {
  position: absolute;
  width: var(--s);
  height: var(--s);
  border-radius: 50%;
  border: 1px solid var(--c-line);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  opacity: var(--o);
}

.hero-content { max-width: 42rem; }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 500;
  color: var(--c-ink);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--c-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.hero-stats {
  margin-top: 4rem;
  display: flex;
  gap: 2rem;
  border-top: 1px solid var(--c-line);
  padding-top: 2rem;
}
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--c-ink);
}
.stat-label {
  display: block;
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-muted);
  margin-top: .125rem;
}

/* ═══════════════════════════════════════════════════════════ SERVICIOS */
.servicios { padding-block: 6rem; background: var(--c-bg); }

.servicios-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--c-line);
}

.servicio-card {
  background: var(--c-bg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: background .2s;
}
.servicio-card:hover { background: var(--c-white); }

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.card-num {
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-muted);
}
.card-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 2px;
  background: var(--c-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
}

.card-body { flex: 1; }
.card-body h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--c-ink);
  margin-bottom: .75rem;
}
.card-body p {
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--c-muted);
  line-height: 1.6;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-ink);
  transition: gap .2s;
}
.servicio-card:hover .card-link { gap: .75rem; }

@media (min-width: 768px) {
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .servicios-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ══════════════════════════════════════════════════════════ PORTAFOLIO */
.portafolio { padding-block: 6rem; background: var(--c-white); }

.portafolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--c-line);
}

.proyecto-card {
  position: relative;
  background: var(--c-white);
  min-height: 280px;
  overflow: hidden;
  display: flex;
  cursor: default;
}
a.proyecto-card { cursor: pointer; }

.proyecto-overlay {
  position: absolute;
  inset: 0;
  background: var(--c-accent);
  opacity: 0;
  transition: opacity .3s;
}
.proyecto-card:hover .proyecto-overlay { opacity: 1; }

.proyecto-inner {
  position: relative;
  z-index: 1;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 100%;
}

.proyecto-cat {
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-muted);
  margin-bottom: 1rem;
  transition: color .3s;
}
.proyecto-card:hover .proyecto-cat { color: rgba(255,255,255,.7); }

.proyecto-nombre {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--c-ink);
  transition: color .3s;
}
.proyecto-card:hover .proyecto-nombre { color: #fff; }

.proyecto-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.proyecto-año {
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-muted);
  transition: color .3s;
}
.proyecto-card:hover .proyecto-año { color: rgba(255,255,255,.6); }

.proyecto-link {
  font-family: var(--font-body);
  font-size: .75rem;
  color: var(--c-muted);
  transition: color .3s;
}
.proyecto-card:hover .proyecto-link { color: rgba(255,255,255,.7); }

@media (min-width: 768px) {
  .portafolio-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ═══════════════════════════════════════════════════════════ CONTACTO */
.contacto {
  padding-block: 6rem;
  background: #1a1a1a;
}

.contacto .section-label { color: rgba(255,255,255,.4); }
.contacto .section-title { color: #fff; }

.contacto-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
}
@media (min-width: 768px) {
  .contacto-grid { grid-template-columns: repeat(2, 1fr); }
}

.contacto-info p {
  font-family: var(--font-body);
  color: rgba(255,255,255,.6);
  line-height: 1.7;
}

.info-items { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 2rem; }

.info-item { display: flex; align-items: flex-start; gap: 1rem; }

.info-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 2px;
  background: rgba(255,255,255,.05);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: .125rem;
}

.info-label {
  font-family: var(--font-body);
  font-size: .75rem;
  color: rgba(255,255,255,.4);
  margin-bottom: .25rem;
}
.info-value {
  font-family: var(--font-body);
  font-size: .875rem;
  color: rgba(255,255,255,.8);
}

/* Formulario */
.contacto-form { display: flex; flex-direction: column; gap: 1.25rem; }

.field-group { display: flex; flex-direction: column; }

.field-group label {
  font-family: var(--font-body);
  font-size: .75rem;
  color: rgba(255,255,255,.4);
  margin-bottom: .5rem;
}
.field-group label small { color: rgba(255,255,255,.2); }

.field-group input,
.field-group textarea {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 2px;
  padding: .75rem 1rem;
  font-family: var(--font-body);
  font-size: .875rem;
  color: #fff;
  outline: none;
  transition: border-color .2s;
  resize: none;
}
.field-group input::placeholder,
.field-group textarea::placeholder { color: rgba(255,255,255,.2); }
.field-group input:focus,
.field-group textarea:focus { border-color: var(--c-accent); }

.field-error {
  font-family: var(--font-body);
  font-size: .75rem;
  color: #f87171;
  margin-top: .25rem;
  min-height: 1rem;
}

.btn-submit {
  width: 100%;
  padding: .75rem;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: .875rem;
  font-weight: 500;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: opacity .2s;
}
.btn-submit:hover  { opacity: .88; }
.btn-submit:disabled { opacity: .5; cursor: not-allowed; }

.form-toast {
  font-family: var(--font-body);
  font-size: .875rem;
  text-align: center;
  margin-top: .5rem;
}
.form-toast.success { color: #4ade80; }
.form-toast.error   { color: #f87171; }
.form-toast[hidden] { display: none; }

/* ════════════════════════════════════════════════════════════ FOOTER */
.site-footer {
  padding-block: 2rem;
  background: #1a1a1a;
  border-top: 1px solid rgba(255,255,255,.08);
}

.footer-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
@media (min-width: 768px) {
  .footer-inner { flex-direction: row; justify-content: space-between; }
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
}
.footer-copy {
  font-family: var(--font-body);
  font-size: .75rem;
  color: rgba(255,255,255,.4);
}

/* ════════════════════════════════════════════════ CASO ESTUDIO (página) */
.caso-estudio { padding-block: 8rem 6rem; }

.breadcrumb { margin-bottom: 3rem; }
.breadcrumb a {
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--c-muted);
  transition: color .2s;
}
.breadcrumb a:hover { color: var(--c-ink); }

.caso-header { margin-bottom: 3rem; }
.caso-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 500;
  color: var(--c-ink);
  margin: .5rem 0;
}
.caso-año {
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--c-muted);
}

.caso-body {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--c-muted);
  line-height: 1.8;
  max-width: 42rem;
}

/* ═══════════════════════════════════════════════════════ ANIMACIONES */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp .6s forwards;
}
.fade-up[data-delay="1"] { animation-delay: .12s; }
.fade-up[data-delay="2"] { animation-delay: .24s; }
.fade-up[data-delay="3"] { animation-delay: .36s; }

@keyframes fadeUp {
  to { opacity: 1; transform: none; }
}

.fade-in-view {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}
.fade-in-view.visible {
  opacity: 1;
  transform: none;
}