/* ============================================================
   Portfolio Elena Álvarez — hoja de estilos base
   Tokens de tema, resets, tipografía y reglas responsive comunes.
   Las reglas específicas de cada página viven en su propio archivo.
   ============================================================ */

:root{
  /* superficies */
  --bg:#FCFCFC; --surface:#FFFFFF; --surface-2:#F7F8FA;
  /* texto */
  --text:#111111; --text-2:#5F6368; --text-muted:#6B6F77;
  /* líneas */
  --border:#E8EAED; --divider:#F1F3F4; --hairline:#EEEFF2;
  /* acento — accent para texto/bordes, accent-strong para rellenos con texto blanco (AA) */
  --accent:#5B5CEB; --accent-hover:#4E50D8;
  --accent-strong:#5B5CEB; --accent-strong-hover:#4E50D8;
  --accent-soft:#F4F3FF; --on-accent:#FFFFFF;
  /* semánticos */
  --success:#16A34A; --warning:#CA8A04; --error:#DC2626;
  --glow:91,92,235;
  /* elevación */
  --shadow-01:0 1px 2px rgba(17,17,17,.05), 0 2px 8px rgba(17,17,17,.04);
  --shadow-02:0 12px 40px -12px rgba(17,17,17,.14);
  --ring:0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent);
  /* layout */
  --maxw:1200px; --readw:760px;
}

:root[data-theme="dark"]{
  --bg:#0A0A0D; --surface:#111114; --surface-2:#17171B;
  --text:#F4F4F5; --text-2:#A1A1AA; --text-muted:#9A9AA3;
  --border:#232329; --divider:#1B1B20; --hairline:#1A1A1F;
  --accent:#6E70F0; --accent-hover:#8486F4;
  --accent-strong:#4A4CD4; --accent-strong-hover:#5B5DE6;
  --accent-soft:#17172B; --on-accent:#FFFFFF;
  --glow:110,112,240;
  --shadow-01:0 1px 2px rgba(0,0,0,.4);
  --shadow-02:0 16px 44px -14px rgba(0,0,0,.6);
}

 /* --- Marca animada de fondo --- */
.hero-mark{
    position: absolute;
    top: 50%;
    right: -6%;
    width: min(62vw, 900px);
    height: auto;
    transform: translateY(-50%);
    opacity: 0.05;
    color: var(--text);
    pointer-events: none;
    z-index: 0;
    animation: mark-spin 120s linear infinite;
    transform-origin: 60% 50%;
  }

  .hero-mark svg{ display:block; width:100%; height:100%; }

  @keyframes mark-spin{
    0%   { transform: translateY(-50%) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(360deg); }
  }

  @media (prefers-reduced-motion: reduce){
    .hero-mark{ animation: none; }
  }

.zoomable {
  cursor: zoom-in;
  transition: transform .18s ease-out, box-shadow .18s ease-out, filter .18s ease-out;
}

img.zoomable:hover,
img.zoomable:focus-visible {
  transform: translateY(-1px);
  filter: saturate(1.05);
}

.portfolio-lightbox,
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(20px, 4vw, 48px);
  background: rgba(7, 9, 16, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.portfolio-lightbox.active,
.lightbox.active {
  display: flex;
}

.portfolio-lightbox-stage,
.lightbox-stage {
  position: relative;
  display: grid;
  place-items: center;
  width: min(1200px, 100%);
  max-height: 90vh;
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.45);
}

.portfolio-lightbox img,
.lightbox img {
  display: block;
  width: auto;
  max-width: min(95vw, 1200px);
  max-height: min(88vh, 900px);
  object-fit: contain;
  border-radius: 18px;
  background: rgba(255,255,255,0.02);
}

.portfolio-lightbox-close,
.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  background: rgba(17, 17, 17, 0.48);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
  transition: background-color .15s ease-out, border-color .15s ease-out, transform .15s ease-out;
}

.portfolio-lightbox-close:hover,
.portfolio-lightbox-close:focus-visible,
.lightbox-close:hover,
.lightbox-close:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255,255,255,0.38);
  transform: translateY(-1px);
}

body.lightbox-open {
  overflow: hidden;
}

/* --- reset --- */
*{ box-sizing:border-box; }
html,body{ margin:0; }
body{
  background:var(--bg); color:var(--text);
  font-family:'Inter',system-ui,sans-serif; font-size:18px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background-color .25s ease-out, color .25s ease-out;
}
h1,h2,h3,h4{
  font-family:'Space Grotesk','Inter',sans-serif; font-weight:600;
  line-height:1.05; letter-spacing:-0.025em; margin:0; color:var(--text);
}
p{ margin:0; }
a{ color:var(--accent); text-decoration:none; }
a:hover{ color:var(--accent-hover); }
img{ display:block; max-width:100%; }
input,textarea,button,select{ font-family:inherit; font-size:inherit; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:4px; }
::selection{ background:var(--accent-soft); color:var(--accent-hover); }

/* --- utilidades --- */
.sr-only{ position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0; }
[data-fx="spotlight"]:focus-within{ border-color:var(--accent) !important; }

/* --- animaciones --- */
@keyframes riseIn{ from{ opacity:0; transform:translateY(22px); } to{ opacity:1; transform:translateY(0); } }
@keyframes fadeIn{ from{ opacity:0; } to{ opacity:1; } }
@keyframes pulseDot{ 0%,100%{ box-shadow:0 0 0 0 rgba(var(--glow),.5);} 50%{ box-shadow:0 0 0 6px rgba(var(--glow),0);} }
@media (prefers-reduced-motion: reduce){ *,*::before,*::after{ transition:none !important; animation:none !important; } }

/* --- responsive común --- */
@media (max-width: 860px){
  nav[aria-label="Primary"]{ flex-wrap:wrap !important; gap:10px 16px !important; }
  [data-nav]{ order:3; width:100%; margin-left:0 !important; overflow-x:auto; -webkit-overflow-scrolling:touch; }
  section{ padding-left:20px !important; padding-right:20px !important; }
  /* objetivos táctiles mínimos 44px (WCAG 2.5.5) */
  nav[aria-label="Primary"] a, nav[aria-label="Primary"] button{ min-height:44px; display:inline-flex !important; align-items:center; justify-content:center; }
  nav[aria-label="Primary"] button{ width:44px !important; height:44px !important; }
  footer a{ min-height:44px; display:inline-flex; align-items:center; }
  /* rejillas auto-fit: al apilarse, los bordes verticales pasan a horizontales */
  [data-stack-grid] > div{ border-right:none !important; border-bottom:1px solid var(--divider); }
  [data-stack-grid] > div:last-child{ border-bottom:none; }
}