/* Sistema visual tomado de tecxart.es: mismos tokens, mismas familias.
   Las fuentes se sirven desde aquí y no desde Google, para no enviar la IP de
   quien usa la app a un tercero. */

@font-face {
  font-family: "Outfit";
  src: url("/static/fuentes/outfit.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/static/fuentes/inter.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/static/fuentes/jetbrains-mono.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --background: #0a0a0a;
  --foreground: #ededed;
  --accent: #ef4444;
  --accent-hover: #dc2626;
  --accent-rgb: 239, 68, 68;
  --text-muted: #9ca3af;
  --text-dark: #6b7280;
  --border: rgba(255, 255, 255, 0.05);
  --border-hover: rgba(239, 68, 68, 0.2);
  --glass: rgba(17, 17, 17, 0.8);
  --font-display: "Outfit", sans-serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 4rem 1.5rem 5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--foreground);
  background: var(--background);
  /* Un solo resplandor detrás del panel: el eco más discreto del fondo animado
     de tecxart.es, que en una herramienta sería ruido. */
  background-image: radial-gradient(
    60rem 32rem at 50% -8rem,
    rgba(239, 68, 68, 0.12),
    transparent 70%
  );
  background-repeat: no-repeat;
}

main {
  max-width: 46rem;
  margin: 0 auto;
}

/* --- cabecera ------------------------------------------------------------ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: 9999px;
  background: rgba(239, 68, 68, 0.08);
  backdrop-filter: blur(6px);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0.6rem var(--accent);
}

h1 {
  margin: 1.25rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.035em;
}

h1 em {
  color: var(--accent);
  font-style: normal;
}

.lead {
  margin: 0;
  max-width: 34rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.lead strong {
  color: var(--foreground);
  font-weight: 600;
}

/* --- panel --------------------------------------------------------------- */

form {
  margin-top: 2.5rem;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--glass);
  backdrop-filter: blur(12px);
}

fieldset {
  margin: 0 0 1.75rem;
  padding: 0;
  border: 0;
}

fieldset:last-of-type {
  margin-bottom: 1.25rem;
}

legend {
  display: block;
  margin-bottom: 0.75rem;
  padding: 0;
  color: var(--text-dark);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hint {
  margin: 0.6rem 0 0;
  color: var(--text-dark);
  font-size: 0.85rem;
}

.hint code {
  color: var(--text-muted);
}

/* --- entrada de ficheros ------------------------------------------------- */

input[type="file"] {
  display: block;
  width: 100%;
  padding: 1.5rem;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

input[type="file"]:hover {
  border-color: var(--border-hover);
  background: rgba(239, 68, 68, 0.04);
}

input[type="file"]::file-selector-button {
  margin-right: 1rem;
  padding: 0.5rem 1rem;
  border: 0;
  border-radius: 8px;
  background: rgba(239, 68, 68, 0.12);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}

input[type="file"]::file-selector-button:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* --- modos --------------------------------------------------------------- */

.modos {
  display: grid;
  gap: 0.6rem;
}

.modo {
  display: block;
  position: relative;
  margin: 0;
  padding: 0.9rem 1rem 0.9rem 2.75rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.015);
  cursor: pointer;
  transition: var(--transition);
}

.modo:hover {
  border-color: var(--border-hover);
}

.modo input {
  position: absolute;
  left: 1rem;
  top: 1.15rem;
  width: 0.9rem;
  height: 0.9rem;
  margin: 0;
  accent-color: var(--accent);
}

.modo strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.modo span {
  color: var(--text-dark);
  font-size: 0.85rem;
}

.modo:has(input:checked) {
  border-color: rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.06);
}

.modo:has(input:checked) strong {
  color: var(--accent);
}

/* --- reglas -------------------------------------------------------------- */

.plantillas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 1rem;
}

.rule {
  display: grid;
  grid-template-columns: 1fr auto 2fr auto;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

input[type="text"],
input:not([type]),
select {
  min-width: 0;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--foreground);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: var(--transition);
}

input::placeholder {
  color: var(--text-dark);
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
input[type="file"]:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

input:not([type="file"]):hover,
select:hover {
  border-color: var(--border-hover);
}

select {
  font-family: var(--font-sans);
}

/* --- botones ------------------------------------------------------------- */

button {
  padding: 0.55rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}

button:hover {
  border-color: var(--border-hover);
  color: var(--foreground);
}

button.primary {
  width: 100%;
  padding: 0.95rem 1.75rem;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.3);
  color: #fff;
  font-size: 1rem;
  letter-spacing: 0.08em;
}

button.primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 26px rgba(239, 68, 68, 0.4);
}

button.primary:disabled {
  background: var(--text-dark);
  box-shadow: none;
  cursor: progress;
}

button.remove {
  padding: 0.3rem 0.6rem;
  font-size: 0.9rem;
  line-height: 1;
}

/* --- pie ----------------------------------------------------------------- */

.privacidad {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-dark);
  font-size: 0.875rem;
}

.privacidad h2 {
  margin: 0 0 0.5rem;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.privacidad p {
  margin: 0 0 0.75rem;
  max-width: 42rem;
}

.privacidad code {
  color: var(--accent);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

a {
  color: var(--accent);
}

/* --- error --------------------------------------------------------------- */

.error {
  color: var(--accent);
  font-weight: 500;
}

@media (max-width: 40rem) {
  body {
    padding: 2.5rem 1rem 3rem;
  }
  /* Nombre y tipo en una línea; el patrón, que es lo largo, en la siguiente
     con el botón de quitar al lado. */
  .rule {
    grid-template-columns: 1fr auto;
  }
  form {
    padding: 1.25rem;
  }
}

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