/* ============================================================
   MedPhys — Especialistas en Radiación
   Sistema de diseño: "reporte técnico"
   Tinta sobre papel, una sola tinta de acento (naranja MedPhys),
   numeración tipo cláusula de norma, reglas finas, datos en mono.
   ============================================================ */

:root {
  --paper: #faf7f2;
  --paper-2: #f2ede4;
  --ink: #16140f;
  --ink-2: #4d473c;
  --ink-3: #8a8273;
  --rule: #d9d2c4;
  --orange: #f7941d;
  --orange-deep: #e07c00;
  --orange-ink: #b05e00;       /* naranja legible sobre papel */
  --white: #fffdf9;

  --font-display: 'Archivo', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --max: 1200px;
  --gut: clamp(1.25rem, 4vw, 3rem);
  --rad: 2px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-display);
  font-weight: 400;
  background: var(--paper);
  color: var(--ink);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--orange); color: var(--ink); }

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

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

/* ---------- tipografía utilitaria ---------- */

.mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.clause {
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--orange-ink);
  font-size: 0.8em;
  letter-spacing: 0;
}

h1, h2, h3 { font-weight: 640; letter-spacing: -0.025em; line-height: 1.04; text-wrap: balance; }

.lead { font-size: clamp(1.1rem, 1.6vw, 1.3rem); line-height: 1.55; color: var(--ink-2); max-width: 56ch; }

/* ---------- header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.site-header .bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; height: 72px;
}

.brand { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; }
.brand svg { width: 38px; height: 38px; flex: none; }
.brand .word { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.brand .word span { font-weight: 350; }
.brand .tag { font-family: var(--font-mono); font-size: 0.55rem; letter-spacing: 0.18em; color: var(--ink-3); text-transform: uppercase; margin-top: 2px; }

.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a {
  text-decoration: none; font-size: 0.95rem; font-weight: 480;
  color: var(--ink-2); padding: 0.3rem 0; border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--orange); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--orange); }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-weight: 560; font-size: 0.95rem;
  text-decoration: none; cursor: pointer;
  padding: 0.7rem 1.3rem; border-radius: var(--rad);
  border: 1.5px solid var(--ink);
  background: var(--ink); color: var(--paper);
  transition: background .15s, color .15s;
}
.btn:hover { background: var(--orange); border-color: var(--orange); color: var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.btn.orange { background: var(--orange); border-color: var(--orange); color: var(--ink); }
.btn.orange:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }

.menu-toggle { display: none; background: none; border: 1px solid var(--rule); border-radius: var(--rad); padding: 0.5rem 0.7rem; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; cursor: pointer; color: var(--ink); }

/* ---------- franja de metadatos ---------- */

.meta-strip {
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}
.meta-strip .wrap {
  display: flex; flex-wrap: wrap; gap: 0.4rem 2.5rem;
  padding-block: 0.5rem;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em;
  color: var(--ink-3); text-transform: uppercase;
}
.meta-strip b { color: var(--orange-ink); font-weight: 500; }

/* ---------- hero ---------- */

.hero { padding-block: clamp(3.5rem, 9vw, 7rem) clamp(3rem, 7vw, 5.5rem); position: relative; overflow: hidden; }

.hero h1 {
  font-size: clamp(2.5rem, 6.5vw, 5rem);
  max-width: 16ch;
}
.hero h1 em { font-style: normal; color: var(--orange-ink); }

.hero .kicker { margin-bottom: 1.4rem; color: var(--orange-ink); display: flex; align-items: center; gap: 0.8rem; }
.hero .kicker::before { content: ""; width: 2.2rem; height: 2px; background: var(--orange); }

.hero .lead { margin-top: 1.6rem; }
.hero .cta-row { margin-top: 2.4rem; display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero .figures {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}
.hero .figures > div { padding: 1.1rem 1.4rem 0 0; border-right: 1px solid var(--rule); padding-left: 1.4rem; }
.hero .figures > div:first-child { padding-left: 0; }
.hero .figures > div:last-child { border-right: 0; }
.hero .figures .n { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 640; letter-spacing: -0.03em; }
.hero .figures .n sup { font-size: 0.5em; color: var(--orange-ink); }
.hero .figures .l { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-top: 0.2rem; }

/* onda de fondo del hero */
.hero .wave-bg {
  position: absolute; right: -6%; top: 50%; transform: translateY(-50%);
  width: min(46vw, 620px); opacity: 0.5; pointer-events: none;
}

/* ---------- secciones ---------- */

.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section.alt { background: var(--paper-2); border-block: 1px solid var(--rule); }

.sec-head { display: flex; align-items: baseline; gap: 1.2rem; margin-bottom: clamp(1.8rem, 4vw, 3rem); }
.sec-head .no { font-family: var(--font-mono); color: var(--orange-ink); font-size: 0.95rem; }
.sec-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
.sec-head .rule { flex: 1; height: 1px; background: var(--rule); align-self: center; min-width: 40px; }
.sec-head a.all { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); text-decoration: none; white-space: nowrap; }
.sec-head a.all:hover { color: var(--orange-ink); }

/* ---------- index de servicios (estilo norma) ---------- */

.svc-index { border-top: 1px solid var(--rule); }
.svc-row {
  display: grid; grid-template-columns: 5.5rem 1fr auto; gap: 1.5rem; align-items: baseline;
  padding: 1.15rem 0.4rem; border-bottom: 1px solid var(--rule);
  text-decoration: none; transition: background .12s;
}
.svc-row:hover { background: var(--white); }
.svc-row .num { font-family: var(--font-mono); font-size: 0.8rem; color: var(--orange-ink); }
.svc-row .name { font-weight: 560; font-size: 1.1rem; letter-spacing: -0.01em; }
.svc-row .name small { display: block; font-weight: 400; font-size: 0.88rem; color: var(--ink-2); margin-top: 0.15rem; letter-spacing: 0; }
.svc-row .go { font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-3); }
.svc-row:hover .go { color: var(--orange-ink); }

/* ---------- tarjetas planas con regla ---------- */

.grid { display: grid; gap: 1.5rem; }
.grid.c2 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid.c3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--rad);
  padding: 1.6rem 1.6rem 1.5rem;
  display: flex; flex-direction: column; gap: 0.7rem;
}
.card .num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--orange-ink); letter-spacing: 0.08em; }
.card h3 { font-size: 1.25rem; }
.card p { color: var(--ink-2); font-size: 0.97rem; }
.card .foot { margin-top: auto; padding-top: 0.9rem; }

/* ---------- bloque cursos (destacado) ---------- */

.course-banner {
  background: var(--ink); color: var(--paper);
  border-radius: var(--rad);
  position: relative; overflow: hidden;
}
.course-banner .inner { padding: clamp(2rem, 5vw, 3.5rem); position: relative; z-index: 1; display: grid; gap: 1.2rem; grid-template-columns: 1.4fr 1fr; align-items: center; }
.course-banner h2 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); color: var(--white); }
.course-banner h2 em { font-style: normal; color: var(--orange); }
.course-banner p { color: #c9c2b2; max-width: 52ch; }
.course-banner .mono { color: var(--orange); }
.course-banner .wave { position: absolute; inset: auto -4% -38% auto; width: 60%; opacity: 0.18; }
.course-banner .actions { display: flex; flex-direction: column; gap: 0.8rem; align-items: flex-start; justify-self: end; }

/* ---------- tablas técnicas ---------- */

.tbl { width: 100%; border-collapse: collapse; background: var(--white); border: 1px solid var(--rule); font-size: 0.95rem; }
.tbl caption { text-align: left; padding-bottom: 0.7rem; }
.tbl th {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
  font-weight: 500; color: var(--ink-3); text-align: left;
  padding: 0.7rem 1rem; border-bottom: 1.5px solid var(--ink); background: var(--paper-2);
}
.tbl td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--rule); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td.mono-cell { font-family: var(--font-mono); font-size: 0.85rem; }

/* ---------- página interior ---------- */

.page-head { padding-block: clamp(2.8rem, 6vw, 4.5rem) clamp(1.6rem, 3vw, 2.4rem); border-bottom: 1px solid var(--rule); }
.page-head .crumb { margin-bottom: 1.2rem; color: var(--ink-3); }
.page-head .crumb a { color: inherit; text-decoration: none; }
.page-head .crumb a:hover { color: var(--orange-ink); }
.page-head h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); max-width: 22ch; }
.page-head .lead { margin-top: 1.2rem; }

.prose { max-width: 70ch; }
.prose h2 { font-size: 1.55rem; margin: 2.4rem 0 0.8rem; }
.prose h3 { font-size: 1.18rem; margin: 1.8rem 0 0.6rem; }
.prose p { margin-bottom: 1rem; color: var(--ink-2); }
.prose ul, .prose ol { margin: 0 0 1rem 1.2rem; color: var(--ink-2); }
.prose li { margin-bottom: 0.45rem; }
.prose strong { color: var(--ink); }

article.svc { display: grid; grid-template-columns: 5.5rem 1fr; gap: 1.5rem; padding-block: clamp(2.2rem, 5vw, 3.4rem); border-bottom: 1px solid var(--rule); }
article.svc:last-of-type { border-bottom: 0; }
article.svc > .num { font-family: var(--font-mono); color: var(--orange-ink); font-size: 0.85rem; padding-top: 0.5rem; }
article.svc h2 { font-size: clamp(1.5rem, 2.8vw, 2.1rem); margin-bottom: 0.9rem; }
article.svc .body { max-width: 68ch; }
article.svc .body p { color: var(--ink-2); margin-bottom: 0.9rem; }
article.svc .body ul { margin: 0 0 0.9rem 1.2rem; color: var(--ink-2); }
article.svc .norm-ref { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; color: var(--ink-3); text-transform: uppercase; margin-bottom: 0.8rem; }
article.svc .norm-ref b { color: var(--orange-ink); font-weight: 500; }

/* ---------- cursos ---------- */

.course-card { background: var(--white); border: 1.5px solid var(--ink); border-radius: var(--rad); overflow: hidden; display: flex; flex-direction: column; }
.course-card .head { padding: 1.5rem 1.6rem 1.2rem; border-bottom: 1px solid var(--rule); }
.course-card .head .mono { color: var(--orange-ink); }
.course-card h3 { font-size: 1.45rem; margin-top: 0.5rem; }
.course-card .specs { list-style: none; padding: 0.4rem 0; }
.course-card .specs li { display: flex; justify-content: space-between; gap: 1rem; padding: 0.55rem 1.6rem; border-bottom: 1px dashed var(--rule); font-size: 0.93rem; }
.course-card .specs li:last-child { border-bottom: 0; }
.course-card .specs .k { color: var(--ink-3); font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; padding-top: 0.2em; }
.course-card .specs .v { text-align: right; font-weight: 520; }
.course-card .price-row { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.2rem 1.6rem; background: var(--paper-2); border-top: 1px solid var(--rule); }
.course-card .price { font-size: 1.5rem; font-weight: 640; letter-spacing: -0.02em; }
.course-card .price small { font-family: var(--font-mono); font-size: 0.62rem; font-weight: 400; letter-spacing: 0.08em; color: var(--ink-3); display: block; text-transform: uppercase; }

.cohort-tag { display: inline-block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; padding: 0.25rem 0.6rem; border: 1px solid var(--rule); border-radius: 99px; color: var(--ink-2); }
.cohort-tag.open { border-color: var(--orange); color: var(--orange-ink); }

/* pasos de inscripción */
.steps { counter-reset: step; display: grid; gap: 0; border: 1px solid var(--rule); border-radius: var(--rad); background: var(--white); }
.step { counter-increment: step; padding: 1.4rem 1.6rem; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; }
.step:last-child { border-bottom: 0; }
.step::before { content: counter(step, decimal-leading-zero); font-family: var(--font-mono); color: var(--orange-ink); font-size: 0.85rem; padding-top: 0.2rem; }
.step h3 { font-size: 1.1rem; margin-bottom: 0.3rem; }
.step p { color: var(--ink-2); font-size: 0.95rem; }

/* formulario */
.form-grid { display: grid; gap: 1rem; grid-template-columns: 1fr 1fr; }
.form-grid .full { grid-column: 1 / -1; }
label.fld { display: flex; flex-direction: column; gap: 0.35rem; }
label.fld .t { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }
label.fld input, label.fld select, label.fld textarea {
  font: inherit; padding: 0.65rem 0.8rem; border: 1px solid var(--rule); border-radius: var(--rad);
  background: var(--white); color: var(--ink); width: 100%;
}
label.fld input:focus, label.fld select:focus, label.fld textarea:focus { outline: 2px solid var(--orange); outline-offset: -1px; border-color: var(--orange); }

.notice {
  border: 1px dashed var(--orange); background: color-mix(in srgb, var(--orange) 7%, var(--white));
  border-radius: var(--rad); padding: 0.9rem 1.1rem; font-size: 0.9rem; color: var(--ink-2);
}
.notice b { color: var(--orange-ink); }

/* ---------- contacto ---------- */

.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2rem, 5vw, 4rem); }
.contact-list { list-style: none; }
.contact-list li { padding: 1.1rem 0; border-bottom: 1px solid var(--rule); }
.contact-list .k { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.3rem; }
.contact-list .v { font-size: 1.1rem; font-weight: 520; }
.contact-list .v a { text-decoration: none; }
.contact-list .v a:hover { color: var(--orange-ink); }

/* ---------- footer ---------- */

.site-footer { background: var(--ink); color: #b3ac9c; margin-top: clamp(3rem, 7vw, 5rem); position: relative; overflow: hidden; }
.site-footer .wave { position: absolute; right: -5%; top: -40%; width: 50%; opacity: 0.07; }
.site-footer .top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.5rem; padding-block: clamp(2.5rem, 6vw, 4rem); position: relative; z-index: 1; }
.site-footer h4 { font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--orange); margin-bottom: 1rem; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 0.55rem; }
.site-footer a { color: #b3ac9c; text-decoration: none; font-size: 0.95rem; }
.site-footer a:hover { color: var(--white); }
.site-footer .brandline { color: var(--white); font-weight: 700; font-size: 1.3rem; letter-spacing: -0.02em; }
.site-footer .brandline span { font-weight: 350; }
.site-footer .legal { border-top: 1px solid #2e2a21; padding-block: 1.1rem; display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.08em; text-transform: uppercase; color: #6e685b; position: relative; z-index: 1; }

/* ---------- divisor de onda ---------- */

.wave-divider { display: block; width: 100%; height: 46px; color: var(--rule); }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--rule); flex-direction: column; align-items: flex-start; padding: 1rem var(--gut) 1.4rem; gap: 1rem; }
  .nav.open { display: flex; }
  .menu-toggle { display: block; }
  .course-banner .inner { grid-template-columns: 1fr; }
  .course-banner .actions { justify-self: start; flex-direction: row; flex-wrap: wrap; }
  .contact-grid { grid-template-columns: 1fr; }
  .site-footer .top { grid-template-columns: 1fr 1fr; }
  article.svc { grid-template-columns: 1fr; gap: 0.4rem; }
  .svc-row { grid-template-columns: 3.4rem 1fr; }
  .svc-row .go { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .hero .wave-bg { display: none; }
}