/* ====== Tokens ====== */
:root{
  --bg: #ffffff;
  --bg-2: #f6f7f8;
  --fg: #121212;
  --muted: #5f6770;
  --brand: #e51e2a;
  --ink: #111111;
  --card: #ffffff;
  --shadow: 0 10px 18px rgba(0,0,0,.08);
}
html[data-theme="dark"]{
  --bg: #0f1115;
  --bg-2: #0b0d11;
  --fg: #f4f6f8;
  --muted: #aab0b6;
  --ink: #f8f9fa;
  --card:#12151b;
  --shadow: 0 10px 20px rgba(0,0,0,.35);
}

/* ====== Base ====== */
* { box-sizing: border-box; }
body{
  margin:0;
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans";
  color: var(--fg);
  background-color: var(--bg);
  background-image: radial-gradient(#d7d7d7 1px, transparent 1px);
  background-size: 16px 16px;
  background-attachment: fixed;
}
html[data-theme="dark"] body{
  background-image: radial-gradient(#2a2f36 1px, transparent 1px);
}
.container{ width:min(1140px, 92%); margin-inline:auto; }
.center{ text-align:center; }
.muted{ color:var(--muted); }
.section{ padding: 64px 0; }

/* ====== Header & Nav (desktop) ====== */
.site-header{
  position: sticky; top:0; z-index: 30;
  backdrop-filter: saturate(180%) blur(8px);
  background: color-mix(in oklab, var(--bg), transparent 10%);
  border-bottom: 1px solid color-mix(in oklab, var(--fg), transparent 92%);
}
.header__inner{ display:flex; align-items:center; gap:16px; padding:10px 0; }
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--fg); }
.brand__logo{ height:100px; width:auto; }
.nav{ margin-left:auto; display:flex; gap:18px; }
.nav a{
  color:var(--fg); text-decoration:none; font-weight:500;
  padding:8px 10px; border-radius:10px;
}
.nav a:hover{ background: color-mix(in oklab, var(--fg), transparent 94%); }

/* ====== Theme toggle (sin cambios) ====== */
.theme-btn{
  margin-left:8px;
  width:40px; height:40px;
  display:inline-grid; place-items:center;
  border-radius:999px; cursor:pointer;
  border:1px solid color-mix(in oklab, var(--fg), transparent 85%);
  background: var(--card); color: var(--fg);
  position: relative;
}
.theme-btn .icon{
  position:absolute; width:22px; height:22px;
  transition: opacity .22s ease, transform .25s ease;
}
.theme-btn .sun{ opacity:1; transform: scale(1) rotate(0deg); }
.theme-btn .moon{ opacity:0; transform: scale(.85) rotate(-20deg); }
html[data-theme="dark"] .theme-btn .sun{ opacity:0; transform: scale(.85) rotate(20deg); }
html[data-theme="dark"] .theme-btn .moon{ opacity:1; transform: scale(1) rotate(0deg); }

/* ===================== MENÚ HAMBURGUESA ===================== */

/* Botón (oculto en desktop) */
.nav-toggle{
  margin-left:auto;
  width:44px; height:44px;
  border-radius:12px;
  border:1px solid color-mix(in oklab, var(--fg), transparent 85%);
  background:var(--card); color:var(--fg);
  display:none;                 /* visible sólo en móvil */
  flex-direction:column; align-items:center; justify-content:center;
  gap:5px; line-height:0;
  transition:background .2s, border-color .2s, transform .05s;
}
.nav-toggle:active{ transform:translateY(1px); }
.nav-toggle .bar{
  width:22px; height:2px; background:currentColor; border-radius:2px; display:block;
  transition:transform .2s, opacity .2s;
}

/* Animación a X cuando está abierto */
.nav-open .nav-toggle .bar:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-open .nav-toggle .bar:nth-child(2){ opacity:0; }
.nav-open .nav-toggle .bar:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* Overlay */
.nav-overlay{
  position:fixed; inset:0; background:rgba(0,0,0,.35); backdrop-filter:blur(2px);
  z-index:25; opacity:0; pointer-events:none; transition:opacity .2s ease;
}
.nav-overlay.is-visible{ opacity:1; pointer-events:auto; }

/* Panel móvil (dropdown desde el header) */
@media (max-width:980px){
  :root{ --header-h:64px; }
  .brand__logo{ height:80px; }
  .nav-toggle{ display:flex; }

  .nav{
    position:fixed; left:0; right:0; top:var(--header-h);
    z-index:26;
    display:flex; flex-direction:column; gap:6px;
    padding:12px; background:var(--card);
    border-top:1px solid color-mix(in oklab, var(--fg), transparent 88%);
    box-shadow:0 12px 24px rgba(0,0,0,.10);
    transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
  }
  .nav a{ display:block; padding:12px 10px; border-radius:10px; }
  .nav a:active{ background: color-mix(in oklab, var(--fg), transparent 94%); }

  .nav.is-open{ transform:translateY(0); opacity:1; pointer-events:auto; }
  body.no-scroll{ overflow:hidden; }
}

/* ====== Footer ====== */
.site-footer{
  border-top:1px solid color-mix(in oklab, var(--fg), transparent 90%);
  padding:18px 0; background: color-mix(in oklab, var(--bg), #000 4%);
}
.footer__inner{
  display:flex; align-items:center; justify-content:center; gap:12px; flex-wrap:wrap; text-align:center;
}