/* ===========================================================
   PRODITICS — hoja de estilos
   Paleta y tokens declarados en :root para fácil edición.
   =========================================================== */
:root{
  --ink:#14213D;
  --ink-soft:#2C3A5C;
  --paper:#FAF8F3;
  --paper-dim:#F1EEE4;
  --line:#E2DDCE;
  --coral:#FF6B4A;
  --coral-dark:#E4552F;
  --amber:#FFC857;
  --teal:#2A9D8F;
  --white:#FFFFFF;

  /* colores por materia */
  --mat:#3A6EA5;
  --ing:#C1447E;
  --com:#6B4E9E;
  --fis:#2A9D8F;
  --qui:#E07A5F;

  --radius:14px;
  --radius-sm:8px;
  --shadow:0 10px 30px -12px rgba(20,33,61,.25);
  --shadow-sm:0 4px 14px -6px rgba(20,33,61,.18);

  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
h1,h2,h3,h4{font-family:var(--font-display);margin:0 0 .4em;line-height:1.15;}
p{margin:0 0 1em;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
:focus-visible{outline:3px solid var(--coral);outline-offset:2px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important;}
}

/* ---------- textura de cuaderno para fondos ---------- */
.grid-bg{
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 34px 34px;
  background-position: -1px -1px;
}

/* =================== HEADER =================== */
header{
  position:sticky; top:0; z-index:50;
  background:rgba(250,248,243,.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-display); font-weight:700; font-size:1.3rem;
  text-decoration:none; color:var(--ink);
}
.logo-mark{
  width:34px;height:34px;border-radius:9px;
  background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  color:var(--amber); font-family:var(--font-mono); font-weight:600; font-size:.95rem;
  transform:rotate(-4deg);
}
.nav-links{
  display:flex; gap:30px; list-style:none; margin:0; padding:0;
  font-weight:600; font-size:.95rem;
}
.nav-links a{text-decoration:none; position:relative; padding:4px 0;}
.nav-links a:hover{color:var(--coral-dark);}
.nav-cta{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--ink); color:var(--paper);
  padding:10px 18px; border-radius:999px; font-weight:600; font-size:.9rem;
  text-decoration:none; white-space:nowrap;
  transition:transform .15s ease, background .15s ease;
}
.nav-cta:hover{background:var(--coral); transform:translateY(-1px);}
.nav-toggle{display:none; background:none; border:none; cursor:pointer; padding:6px;}
.nav-toggle span{display:block; width:24px; height:2.5px; background:var(--ink); margin:5px 0; border-radius:2px;}

@media (max-width:860px){
  .nav-links{
    position:absolute; top:100%; left:0; right:0;
    background:var(--paper); border-bottom:1px solid var(--line);
    flex-direction:column; gap:0; padding:8px 24px 18px;
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links li{border-top:1px solid var(--line);}
  .nav-links a{display:block; padding:14px 0;}
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
}

/* =================== HERO =================== */
.hero{
  padding:88px 0 70px;
  position:relative;
  overflow:hidden;
}
.hero-inner{
  display:grid; grid-template-columns:1.15fr .85fr; gap:50px; align-items:center;
}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:.78rem; font-weight:600;
  letter-spacing:.06em; text-transform:uppercase;
  background:var(--white); border:1px solid var(--line);
  padding:6px 12px; border-radius:999px; margin-bottom:18px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);}
.hero h1{
  font-size:clamp(2.3rem, 4.4vw, 3.4rem);
  letter-spacing:-.01em;
  max-width:16ch;
}
.hero h1 .accent{
  color:var(--coral-dark);
  text-decoration:underline;
  text-decoration-color:var(--amber);
  text-decoration-thickness:6px;
  text-underline-offset:4px;
}
.hero p.lead{
  font-size:1.1rem; color:var(--ink-soft); max-width:46ch;
}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap; margin:26px 0 34px;}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 24px; border-radius:999px; font-weight:600; font-size:.98rem;
  text-decoration:none; cursor:pointer; border:2px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
  font-family:var(--font-body);
}
.btn-primary{background:var(--coral); color:var(--white); box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--coral-dark); transform:translateY(-2px);}
.btn-outline{background:transparent; border-color:var(--ink); color:var(--ink);}
.btn-outline:hover{background:var(--ink); color:var(--paper);}
.btn-whatsapp svg{width:18px;height:18px;}

.hero-stats{display:flex; gap:28px; flex-wrap:wrap;}
.stat b{display:block; font-family:var(--font-display); font-size:1.6rem;}
.stat span{font-size:.82rem; color:var(--ink-soft);}

.hero-visual{
  position:relative; aspect-ratio:1/1.05;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow);
  padding:22px;
}
.hero-visual .grid-bg{position:absolute; inset:0; border-radius:20px; opacity:.6;}
.hero-card{
  position:relative; z-index:2;
  background:var(--ink); color:var(--paper);
  border-radius:14px; padding:20px;
  font-family:var(--font-mono); font-size:.82rem;
}
.hero-card .row{display:flex; justify-content:space-between; margin-bottom:10px; opacity:.85;}
.hero-chip-row{position:relative; z-index:2; display:flex; flex-wrap:wrap; gap:8px; margin-top:16px;}
.hero-chip{
  font-family:var(--font-mono); font-size:.75rem; font-weight:600;
  padding:7px 12px; border-radius:999px; color:var(--white);
}

@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;}
  .hero{padding:56px 0 40px;}
  .hero-visual{max-width:380px; margin:0 auto;}
}

/* =================== MATERIAS STRIP =================== */
.materias{padding:50px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--paper-dim);}
.section-head{margin-bottom:30px; max-width:640px;}
.section-head .tag{
  font-family:var(--font-mono); font-size:.78rem; font-weight:600; text-transform:uppercase;
  letter-spacing:.06em; color:var(--coral-dark);
}
.materias-grid{
  display:grid; grid-template-columns:repeat(5,1fr); gap:14px;
}
.materia-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px 16px; text-align:center;
  border-top:4px solid var(--m-color);
}
.materia-card .ico{
  width:44px;height:44px;margin:0 auto 10px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:var(--m-color); color:var(--white);
  font-family:var(--font-mono); font-weight:700; font-size:.85rem;
}
.materia-card h4{font-size:.98rem; margin-bottom:4px;}
.materia-card p{font-size:.82rem; color:var(--ink-soft); margin:0;}

@media (max-width:900px){ .materias-grid{grid-template-columns:repeat(3,1fr);} }
@media (max-width:560px){ .materias-grid{grid-template-columns:repeat(2,1fr);} }

/* =================== TIPOS DE TUTOR (credencial) =================== */
.tipos{padding:70px 0;}
.tipos-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.tipo-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px 24px 26px;
  box-shadow:var(--shadow-sm);
}
.tipo-card::before{
  content:"";
  position:absolute; top:0; left:20px; right:20px; height:14px;
  background-image: radial-gradient(circle at 8px 8px, var(--paper) 4px, transparent 4.5px);
  background-size:16px 16px;
  background-repeat:repeat-x;
  background-position:top;
}
.tipo-badge{
  display:inline-block; font-family:var(--font-mono); font-size:.72rem; font-weight:600;
  letter-spacing:.05em; text-transform:uppercase; color:var(--white);
  background:var(--t-color); padding:5px 11px; border-radius:6px; margin-bottom:14px;
}
.tipo-card h3{font-size:1.22rem; margin-bottom:8px;}
.tipo-price{
  font-family:var(--font-display); font-weight:700; font-size:1.5rem; color:var(--ink);
  margin-bottom:12px;
}
.tipo-price span{font-family:var(--font-body); font-weight:500; font-size:.85rem; color:var(--ink-soft);}
.tipo-card p.desc{font-size:.92rem; color:var(--ink-soft); margin-bottom:16px;}
.tipo-niveles{display:flex; flex-wrap:wrap; gap:6px;}
.niv-chip{
  font-size:.74rem; font-weight:600; padding:5px 10px; border-radius:999px;
  background:var(--paper-dim); border:1px solid var(--line); color:var(--ink-soft);
}

@media (max-width:900px){ .tipos-grid{grid-template-columns:1fr;} }

/* =================== DOCENTES / FILTROS =================== */
.docentes{padding:70px 0 90px; background:var(--paper-dim); border-top:1px solid var(--line);}
.filters{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; margin-bottom:32px; box-shadow:var(--shadow-sm);
  position:sticky; top:78px; z-index:20;
}
.filter-row{display:flex; align-items:flex-start; gap:18px; flex-wrap:wrap; margin-bottom:14px;}
.filter-row:last-child{margin-bottom:0;}
.filter-label{
  font-family:var(--font-mono); font-size:.72rem; font-weight:600; text-transform:uppercase;
  letter-spacing:.05em; color:var(--ink-soft); min-width:88px; padding-top:9px;
}
.pill-group{display:flex; flex-wrap:wrap; gap:8px; flex:1;}
.pill{
  font-family:var(--font-body); font-size:.85rem; font-weight:600;
  padding:8px 15px; border-radius:999px; border:1.5px solid var(--line);
  background:var(--white); cursor:pointer; color:var(--ink-soft);
  transition:all .15s ease;
}
.pill[aria-pressed="true"]{
  background:var(--p-color, var(--ink)); border-color:var(--p-color, var(--ink)); color:var(--white);
}
.pill:hover{border-color:var(--p-color, var(--ink));}
.filter-reset{
  background:none; border:none; text-decoration:underline; font-size:.85rem; font-weight:600;
  color:var(--coral-dark); cursor:pointer; padding:9px 4px;
}
.results-count{font-size:.86rem; color:var(--ink-soft); margin-bottom:18px;}

.docentes-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:26px;
}
@media (max-width:980px){ .docentes-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:680px){ .docentes-grid{grid-template-columns:1fr;} .filters{position:static;} }

.docente-card{
  position:relative;
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow-sm);
  display:flex; flex-direction:column;
  transition:transform .18s ease, box-shadow .18s ease;
}
.docente-card:hover{transform:translateY(-4px); box-shadow:var(--shadow);}
.docente-card::before{
  content:"";
  position:absolute; top:0; left:0; right:0; height:14px; z-index:2;
  background-image: radial-gradient(circle at 8px 8px, var(--paper-dim) 4px, transparent 4.5px);
  background-size:16px 16px; background-repeat:repeat-x; background-position:top;
}
.docente-photo-wrap{
  position:relative; padding:20px 20px 0;
}
.docente-photo{
  width:100%; aspect-ratio:4/3.1; object-fit:cover; border-radius:10px;
  border:1px solid var(--line);
}
.tipo-tab{
  position:absolute; top:30px; left:32px;
  font-family:var(--font-mono); font-size:.68rem; font-weight:700; text-transform:uppercase;
  letter-spacing:.04em; color:var(--white);
  padding:5px 10px; border-radius:6px 6px 0 0;
  box-shadow:0 -2px 6px rgba(0,0,0,.15);
}
.nuevo-tag{
  position:absolute; top:30px; right:32px;
  background:var(--amber); color:var(--ink);
  font-family:var(--font-mono); font-size:.66rem; font-weight:700;
  padding:5px 9px; border-radius:6px;
}
.docente-body{padding:16px 20px 20px; flex:1; display:flex; flex-direction:column;}
.docente-body h3{font-size:1.12rem; margin-bottom:2px;}
.docente-subtitle{font-size:.82rem; color:var(--ink-soft); margin-bottom:12px;}

.docente-meta{list-style:none; margin:0 0 14px; padding:0; display:flex; flex-direction:column; gap:6px;}
.docente-meta li{display:flex; gap:8px; font-size:.84rem; color:var(--ink-soft);}
.docente-meta li b{color:var(--ink); font-weight:600; min-width:auto;}
.docente-meta .mono{font-family:var(--font-mono); font-size:.78rem; background:var(--paper-dim); padding:1px 6px; border-radius:4px;}

.docente-chips{display:flex; flex-wrap:wrap; gap:6px; margin-bottom:14px;}
.mini-chip{
  font-size:.72rem; font-weight:600; padding:4px 9px; border-radius:999px;
  color:var(--white);
}
.mini-chip.modalidad{background:var(--ink); }

.video-toggle{
  display:flex; align-items:center; gap:8px; cursor:pointer;
  font-size:.85rem; font-weight:600; color:var(--ink);
  background:var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:10px 12px; margin-bottom:12px; user-select:none;
}
.video-toggle svg{width:16px;height:16px; transition:transform .2s ease;}
.video-toggle.open svg{transform:rotate(180deg);}
.video-frame{display:none; margin-bottom:14px; border-radius:var(--radius-sm); overflow:hidden; aspect-ratio:16/9; background:var(--ink);}
.video-frame.show{display:block;}
.video-frame iframe{width:100%; height:100%; border:0;}
.video-empty{
  display:none; align-items:center; justify-content:center; height:100%;
  color:var(--paper); font-size:.82rem; font-family:var(--font-mono); text-align:center; padding:20px;
}
.video-frame.empty .video-empty{display:flex;}

.btn-agendar{
  margin-top:auto;
  display:flex; align-items:center; justify-content:center; gap:8px;
  background:var(--coral); color:var(--white); text-decoration:none;
  font-weight:700; font-size:.92rem; padding:13px 18px; border-radius:var(--radius-sm);
  transition:background .15s ease, transform .15s ease;
}
.btn-agendar:hover{background:var(--coral-dark); transform:translateY(-2px);}
.btn-agendar svg{width:17px;height:17px;}

.no-results{
  text-align:center; padding:60px 20px; color:var(--ink-soft);
  background:var(--white); border:1px dashed var(--line); border-radius:var(--radius);
  display:none;
}
.no-results.show{display:block;}
.no-results h3{color:var(--ink); margin-bottom:6px;}

/* =================== CTA BAND =================== */
.cta-band{
  background:var(--ink); color:var(--paper); padding:60px 0; text-align:center;
}
.cta-band h2{color:var(--paper); font-size:clamp(1.6rem,3vw,2.2rem);}
.cta-band p{color:#C9D0E0; max-width:52ch; margin:0 auto 26px;}

/* =================== FOOTER =================== */
footer{padding:44px 0 30px; background:var(--paper);}
.footer-inner{
  display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:24px;
  padding-bottom:24px; border-bottom:1px solid var(--line); margin-bottom:20px;
}
.footer-note{font-size:.84rem; color:var(--ink-soft); max-width:420px;}
.footer-bottom{display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:.8rem; color:var(--ink-soft);}