/* ============================================================
   CLASE EXPERTA — styles.css
   Tokens de diseño + utilidades neo-brutalistas + animaciones
   ============================================================ */

:root {
  /* Fondos */
  --bg-deep: #0A0A0B;
  --bg-surface: #13131A;
  --bg-card: #1C1C24;
  --bg-elevated: #252531;
  --border-line: #2E2E3A;

  /* Tinta */
  --ink-primary: #F5F1E8;
  --ink-secondary: #C4C0B5;
  --ink-muted: #7A7682;

  /* Marca */
  --oro-cp: #FFB81C;
  --azul-cp: #1F2C70;

  /* Acentos latinos */
  --rosa-salsa: #FF2E7E;
  --mint-cumbia: #00E0C7;
  --lima-rave: #C7FF3B;

  /* Tipografía */
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-serif: "Instrument Serif", "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

/* ------------------------------------------------------------ */
/*  Reset suave + body                                          */
/* ------------------------------------------------------------ */
* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--ink-primary);
  font-family: var(--font-display);
  font-feature-settings: "ss01", "ss02";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body { min-height: 100vh; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* Foco accesible */
:focus-visible {
  outline: 2px solid var(--oro-cp);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Scroll suave + reduce motion */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ------------------------------------------------------------ */
/*  Tipografía utilitaria                                       */
/* ------------------------------------------------------------ */
.font-display { font-family: var(--font-display); }
.font-serif   { font-family: var(--font-serif); font-style: italic; }
.font-mono    { font-family: var(--font-mono); letter-spacing: 0.02em; }

.display-xl {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 112px);
  line-height: 0.92;
  letter-spacing: -0.035em;
}
.display-lg {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 0.98;
  letter-spacing: -0.025em;
}
.display-md {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

/* ------------------------------------------------------------ */
/*  Brutalismo: sombras duras + bordes                          */
/* ------------------------------------------------------------ */
.brut-shadow-gold { box-shadow: 6px 6px 0 0 var(--oro-cp); }
.brut-shadow-rosa { box-shadow: 6px 6px 0 0 var(--rosa-salsa); }
.brut-shadow-mint { box-shadow: 6px 6px 0 0 var(--mint-cumbia); }
.brut-shadow-lima { box-shadow: 6px 6px 0 0 var(--lima-rave); }
.brut-shadow-white { box-shadow: 6px 6px 0 0 var(--ink-primary); }

.brut-border { border: 2px solid var(--ink-primary); }
.brut-border-gold { border: 2px solid var(--oro-cp); }

.brut-press {
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.brut-press:hover { transform: translate(-2px, -2px); }
.brut-press:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 0 currentColor; }

/* ------------------------------------------------------------ */
/*  Botones                                                     */
/* ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  border-radius: 4px;
  border: 2px solid var(--ink-primary);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}
.btn-primary {
  background: var(--oro-cp);
  color: #1a1300;
  box-shadow: 5px 5px 0 0 var(--ink-primary);
}
.btn-primary:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 0 var(--ink-primary); }
.btn-primary:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 0 var(--ink-primary); }

.btn-ghost {
  background: transparent;
  color: var(--ink-primary);
}
.btn-ghost:hover { background: var(--ink-primary); color: var(--bg-deep); }

.btn-rosa {
  background: var(--rosa-salsa);
  color: #2a0010;
  border-color: var(--ink-primary);
  box-shadow: 5px 5px 0 0 var(--ink-primary);
}
.btn-rosa:hover { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 0 var(--ink-primary); }

/* ------------------------------------------------------------ */
/*  Chips                                                       */
/* ------------------------------------------------------------ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
}
.chip-gold  { color: var(--oro-cp);     border-color: rgba(255,184,28,.4); }
.chip-rosa  { color: var(--rosa-salsa); border-color: rgba(255,46,126,.4); }
.chip-mint  { color: var(--mint-cumbia);border-color: rgba(0,224,199,.4); }
.chip-lima  { color: var(--lima-rave);  border-color: rgba(199,255,59,.4); }

/* ------------------------------------------------------------ */
/*  Tarjeta de curso                                            */
/* ------------------------------------------------------------ */
.course-card {
  background: var(--bg-card);
  border: 2px solid var(--border-line);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.course-card:hover {
  transform: translateY(-4px);
  border-color: var(--ink-primary);
  box-shadow: 8px 10px 0 0 var(--oro-cp);
}

/* Miniatura placeholder con bandas */
.thumb-placeholder {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    repeating-linear-gradient(135deg,
      rgba(245,241,232,.04) 0 14px,
      rgba(245,241,232,.08) 14px 28px),
    linear-gradient(135deg, var(--bg-elevated), #0e0e14);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.thumb-placeholder::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at top right, rgba(255,184,28,.12), transparent 60%);
  pointer-events: none;
}
.thumb-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 6px 10px;
  border: 1px dashed var(--border-line);
  background: rgba(10,10,11,.6);
  border-radius: 4px;
}

/* ------------------------------------------------------------ */
/*  EN VIVO pulse                                               */
/* ------------------------------------------------------------ */
.live-dot {
  width: 8px; height: 8px;
  background: var(--rosa-salsa);
  border-radius: 999px;
  box-shadow: 0 0 0 0 var(--rosa-salsa);
  animation: live-pulse 1.6s infinite;
}
@keyframes live-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255,46,126,.65); }
  70%  { box-shadow: 0 0 0 10px rgba(255,46,126,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,46,126,0); }
}

/* ------------------------------------------------------------ */
/*  Halftone / dot grid background                              */
/* ------------------------------------------------------------ */
.dot-grid {
  background-image: radial-gradient(rgba(245,241,232,.08) 1px, transparent 1px);
  background-size: 22px 22px;
}
.dot-grid-gold {
  background-image: radial-gradient(rgba(255,184,28,.18) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
}

/* Marquee */
.marquee {
  display: flex;
  gap: 48px;
  overflow: hidden;
  white-space: nowrap;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  gap: 48px;
  animation: marquee-scroll 38s linear infinite;
  flex-shrink: 0;
}
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Halftone diagonal accent bar */
.diag-stripes {
  background-image: repeating-linear-gradient(
    45deg,
    var(--ink-primary) 0 6px,
    transparent 6px 14px
  );
}

/* Subtle entry fade */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fade-up 480ms cubic-bezier(.2,.7,.2,1) both; }

/* Progress bar */
.progress {
  position: relative;
  height: 6px;
  background: var(--border-line);
  border-radius: 999px;
  overflow: hidden;
}
.progress > i {
  position: absolute; inset: 0 auto 0 0;
  background: linear-gradient(90deg, var(--mint-cumbia), var(--oro-cp));
  border-radius: 999px;
}

/* Hide scrollbar utility */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { scrollbar-width: none; }

/* Toast slide-in */
@keyframes toast-in {
  from { opacity: 0; transform: translateY(20px) translateX(20px); }
  to   { opacity: 1; transform: translateY(0) translateX(0); }
}
.toast-in { animation: toast-in 260ms cubic-bezier(.2,.7,.2,1) both; }

/* Tape sticker (neo-brutalist) */
.tape {
  position: absolute;
  background: var(--oro-cp);
  color: #1a1300;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 3px 14px;
  transform: rotate(-3deg);
  box-shadow: 2px 2px 0 0 rgba(0,0,0,.5);
}

/* Diagonal banner */
.ribbon {
  position: absolute;
  top: 14px; right: -38px;
  transform: rotate(35deg);
  background: var(--rosa-salsa);
  color: #2a0010;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 4px 44px;
}