/* ============================================================
   TANDA — Design System (Neumorfismo)
   ------------------------------------------------------------
   Variables, reset, tipografia y componentes reutilizables.
   Mobile-first; los breakpoints crecen hacia escritorio.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Paleta */
  --bg:            #e8ecf3;
  --surface:       #e8ecf3;
  --surface-2:     #eef2f8;
  --text:          #2d3748;
  --text-soft:     #4a5568;
  --text-muted:    #718096;
  --accent:        #ef6e6e;
  --accent-strong: #d85555;
  --accent-soft:   #fde0e0;
  --success:       #4ecb71;
  --danger:        #e53e3e;
  --warning:       #f6ad55;

  /* Sombras neumorficas */
  --sh-light:      rgba(255, 255, 255, 0.95);
  --sh-dark:       rgba(163, 177, 198, 0.55);

  --neu-out:       8px 8px 16px var(--sh-dark), -8px -8px 16px var(--sh-light);
  --neu-out-sm:    4px 4px 8px var(--sh-dark), -4px -4px 8px var(--sh-light);
  --neu-out-lg:    12px 12px 24px var(--sh-dark), -12px -12px 24px var(--sh-light);
  --neu-in:        inset 5px 5px 10px var(--sh-dark), inset -5px -5px 10px var(--sh-light);
  --neu-in-sm:     inset 3px 3px 6px var(--sh-dark), inset -3px -3px 6px var(--sh-light);

  /* Radii */
  --r-sm:    10px;
  --r-md:    18px;
  --r-lg:    24px;
  --r-xl:    32px;
  --r-pill:  999px;

  /* Espaciado */
  --sp-1: .25rem;
  --sp-2: .5rem;
  --sp-3: .75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;

  /* Tipografia */
  --font: "Inter", "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --fw-regular: 400;
  --fw-medium:  500;
  --fw-semi:    600;
  --fw-bold:    700;
}

/* ---------- Reset minimo ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }

/* ---------- Base ---------- */
body {
  font-family: var(--font);
  font-weight: var(--fw-regular);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { color: var(--text); font-weight: var(--fw-bold); line-height: 1.2; margin: 0; }
h1 { font-size: clamp(1.9rem, 4vw, 2.75rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -.015em; }
h3 { font-size: 1.2rem; }
h4 { font-size: 1rem; }
p  { margin: 0; color: var(--text-soft); }
small { color: var(--text-muted); }

.container { width: min(100% - 2rem, 1140px); margin-inline: auto; }

/* ---------- Utilidades ---------- */
.text-accent  { color: var(--accent); }
.text-muted   { color: var(--text-muted); }
.text-center  { text-align: center; }
.fw-semi      { font-weight: var(--fw-semi); }
.fw-bold      { font-weight: var(--fw-bold); }
.mt-2 { margin-top: var(--sp-2); }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mt-8 { margin-top: var(--sp-8); }

/* ---------- Componentes neumorficos ---------- */

/* Tarjetas */
.neu-card {
  background: var(--surface);
  border-radius: var(--r-lg);
  box-shadow: var(--neu-out);
  padding: var(--sp-5);
}
.neu-card.is-flat { box-shadow: var(--neu-out-sm); }
.neu-card.is-inset { box-shadow: var(--neu-in); }

/* Boton primario (coral) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: .8rem 1.6rem;
  font-weight: var(--fw-semi);
  font-size: .95rem;
  border-radius: var(--r-pill);
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn-primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 6px 6px 14px var(--sh-dark), -6px -6px 14px var(--sh-light);
}
.btn-primary:hover { background: var(--accent-strong); transform: translateY(-1px); }
.btn-primary:active { box-shadow: var(--neu-in-sm); transform: translateY(0); }

/* Boton neumorf */
.btn-neu {
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--neu-out-sm);
}
.btn-neu:hover { color: var(--accent); }
.btn-neu:active { box-shadow: var(--neu-in-sm); }

/* Boton outline / ghost */
.btn-ghost { color: var(--text-soft); padding-inline: 1rem; }
.btn-ghost:hover { color: var(--accent); }

/* Inputs */
.field { display: block; margin-bottom: var(--sp-4); }
.field > label { display: block; font-size: .85rem; color: var(--text-muted); margin-bottom: .35rem; padding-left: .5rem; }
.input,
.select,
.textarea {
  width: 100%;
  padding: .9rem 1.15rem;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 0;
  border-radius: var(--r-md);
  box-shadow: var(--neu-in-sm);
  outline: none;
  transition: box-shadow .2s ease;
}
.input::placeholder, .textarea::placeholder { color: var(--text-muted); }
.input:focus, .select:focus, .textarea:focus { box-shadow: var(--neu-in); }
.textarea { resize: vertical; min-height: 6rem; }

/* Helpers de input — convierten visualmente el contenido.
   El JS de app.js complementa cambiando tambien el valor real. */
[data-uppercase] { text-transform: uppercase; }
[data-lowercase] { text-transform: lowercase; }

/* Iconos circulares (para features y nav) */
.icon-circle {
  width: 56px; height: 56px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface);
  border-radius: 50%;
  box-shadow: var(--neu-out-sm);
  color: var(--accent);
  font-size: 1.4rem;
}
.icon-circle.is-inset { box-shadow: var(--neu-in-sm); }

/* Pills / Badges */
.pill {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .35rem .75rem;
  font-size: .8rem;
  font-weight: var(--fw-semi);
  background: var(--surface);
  border-radius: var(--r-pill);
  box-shadow: var(--neu-out-sm);
  color: var(--text-soft);
}
.pill.is-accent { color: var(--accent); }
.pill.is-danger { color: #b53030; background: rgba(229, 62, 62, .14); }
.pill.is-success { color: #2c8d4d; background: rgba(78, 203, 113, .14); }

/* Divider sutil */
.hr-soft { border: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--sh-dark), transparent); margin: var(--sp-6) 0; }

/* Foco accesible */
:focus-visible { outline: 2px dashed var(--accent); outline-offset: 3px; border-radius: var(--r-sm); }

/* ---------- Animaciones ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp .6s ease both; }
.fade-up.delay-1 { animation-delay: .12s; }
.fade-up.delay-2 { animation-delay: .24s; }
.fade-up.delay-3 { animation-delay: .36s; }

/* ---------- Reduce motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ============================================================
   Background blobs — capa de color difuso para parallax ambient
   Compartido entre landing y app/* (lo activa cualquier pagina
   que incluya <div class="bg-blobs">...</div> en el body)
   ============================================================ */
.bg-blobs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .85;
  will-change: transform;
}
.blob-1 {
  width: 520px; height: 520px;
  top: -8%; left: -10%;
  background: radial-gradient(circle, rgba(239, 110, 110, .55), transparent 65%);
}
.blob-2 {
  width: 600px; height: 600px;
  top: 22%; right: -15%;
  background: radial-gradient(circle, rgba(247, 199, 124, .50), transparent 65%);
}
.blob-3 {
  width: 480px; height: 480px;
  top: 55%; left: -12%;
  background: radial-gradient(circle, rgba(186, 144, 247, .42), transparent 65%);
}
.blob-4 {
  width: 440px; height: 440px;
  top: 80%; right: -8%;
  background: radial-gradient(circle, rgba(239, 110, 110, .45), transparent 65%);
}
.blob-5 {
  width: 360px; height: 360px;
  top: 110%; left: 30%;
  background: radial-gradient(circle, rgba(124, 200, 247, .40), transparent 65%);
}
@media (prefers-reduced-motion: reduce) {
  .blob { opacity: .3; }
}