/* =============================================================================
   Clea: The Ethical Hacker — global styles (vanilla CSS, no build)
   Sections: tokens → reset → base → layout → components → pages → a11y → mq
   ============================================================================= */

/* --- Design tokens -------------------------------------------------------- */
:root {
  --color-bg-deep: #07060d;
  --color-bg: #0e0c14;
  --color-surface: #16131f;
  --color-surface-2: #1e1a2a;
  --color-border: rgba(120, 200, 255, 0.14);
  --color-text: #e8eef5;
  --color-text-muted: #9aa8ba;
  --color-accent-cyan: #5ee7ff;
  --color-accent-violet: #a78bfa;
  --color-accent-blue: #6b8cff;
  --color-glow: rgba(94, 231, 255, 0.22);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.45);
  --shadow-card: 0 0 0 1px var(--color-border), var(--shadow-soft);
  --font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-display: "Syne", var(--font-sans);
  --space-xs: 0.35rem;
  --space-sm: 0.65rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.25rem;
  --space-2xl: 3rem;
  --content-max: 72rem;
  --header-h: 11rem;
  --pill-visual-w: 140px;
  --pill-book-visual-w: var(--pill-visual-w);
  --transition: 0.2s ease;
}

/* --- Reset (minimal) ------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
p,
ul,
figure {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Base ----------------------------------------------------------------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg-deep);
  background-image:
    radial-gradient(1200px 600px at 12% -10%, rgba(107, 140, 255, 0.18), transparent 55%),
    radial-gradient(900px 500px at 88% 0%, rgba(167, 139, 250, 0.14), transparent 50%),
    radial-gradient(800px 400px at 50% 100%, rgba(94, 231, 255, 0.06), transparent 45%);
  background-attachment: fixed;
}

a {
  color: var(--color-accent-cyan);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-text);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: var(--space-md);
  top: var(--space-md);
}

/* --- Layout --------------------------------------------------------------- */
.site-wrap {
  position: relative;
  z-index: 0;
  isolation: isolate;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Fondo fijo entre cabecera y pie (pseudo-elementos, sin background-attachment) */
.site-wrap::before,
.site-wrap::after {
  content: "";
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.site-wrap::before {
  z-index: -2;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

html[lang="es"] .site-wrap::before {
  background-image: url("../es/img/webbg.webp");
}

html[lang="en"] .site-wrap::before {
  background-image: url("../en/img/webbg.webp");
}

.site-wrap::after {
  z-index: -1;
  background: rgba(7, 6, 13, 0.68);
}

.site-main {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: calc(var(--header-h) + var(--space-xl)) var(--space-lg) var(--space-2xl);
}

.site-main--narrow {
  max-width: 48rem;
}

/* --- Header --------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 900;
  min-height: var(--header-h);
  height: auto;
  overflow: visible;
  display: flex;
  align-items: flex-start;
  border-bottom: 1px solid var(--color-border);
  background: rgba(7, 6, 13, 0.82);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  position: relative;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1.65rem var(--space-lg) var(--space-xs);
  text-align: center;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  width: 100%;
  margin: 0;
  text-align: center;
  text-decoration: none;
  color: inherit;
}

.brand--static {
  pointer-events: none;
}

.brand:hover {
  color: inherit;
}

.brand img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(293px, 88vw);
  max-height: 6.25rem;
  margin-inline: auto;
  object-fit: contain;
}

.brand__text {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  gap: 0.1rem;
  line-height: 1.25;
}

.brand__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  letter-spacing: 0.02em;
}

.brand__tagline {
  display: block;
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 2.1vw, 1.15rem);
  font-weight: 600;
  color: var(--color-text-muted);
  text-align: center;
  letter-spacing: 0.02em;
}

.brand__mark {
  width: auto;
  height: 3rem;
  max-width: 3.25rem;
  flex-shrink: 0;
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 24px var(--color-glow);
}

.lang-switch {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-lg);
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.68rem;
  font-weight: 600;
}

.lang-switch a {
  text-decoration: none;
  color: var(--color-text-muted);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.lang-switch a:hover {
  color: var(--color-text);
  border-color: var(--color-border);
}

.lang-switch a[aria-current="page"] {
  color: var(--color-bg-deep);
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  border-color: transparent;
}

.lang-switch__sep {
  color: var(--color-text-muted);
  user-select: none;
}

/* --- Footer --------------------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-border);
  background: rgba(14, 12, 20, 0.92);
  padding: var(--space-xl) var(--space-lg);
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  justify-content: center;
  align-items: center;
}

.footer-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.35rem 0.2rem;
}

.footer-nav a:hover {
  color: var(--color-accent-cyan);
}

.footer-nav__sep {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  user-select: none;
}

.footer-legal {
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 52rem;
  margin: 0 auto;
}

/* --- Typography ----------------------------------------------------------- */
.page-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-md);
}

.lead {
  font-size: 1.08rem;
  color: var(--color-text-muted);
  max-width: 42rem;
}

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

.prose p + p {
  margin-top: var(--space-md);
}

.prose ul {
  margin: var(--space-md) 0;
  padding-left: 1.35rem;
  list-style: disc;
}

.prose li + li {
  margin-top: var(--space-xs);
}

.prose h2 {
  font-family: var(--font-display);
  color: var(--color-text);
  font-size: 1.25rem;
  margin: var(--space-xl) 0 var(--space-sm);
}

/* --- Book detail (ficha con portada) -------------------------------------- */
.book-detail::after {
  content: "";
  display: table;
  clear: both;
}

.book-detail__cover {
  float: left;
  width: 33.333%;
  max-width: 33.333%;
  height: auto;
  margin: 0.15rem var(--space-lg) var(--space-md) 0;
  object-fit: contain;
  object-position: left top;
  filter: drop-shadow(0 14px 32px rgba(0, 0, 0, 0.45));
}

.legal-section h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

/* --- Home: pill cards ----------------------------------------------------- */
.home-intro {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.home-intro .lead {
  margin: 0 auto;
}

.pill-grid {
  display: grid;
  gap: var(--space-lg);
}

.pill-card {
  display: grid;
  grid-template-columns: minmax(0, var(--pill-visual-w)) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: stretch;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--color-surface), var(--color-surface-2));
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  text-align: left;
  border: 1px solid transparent;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.pill-card:hover {
  border-color: rgba(94, 231, 255, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(94, 231, 255, 0.25), 0 22px 55px rgba(0, 0, 0, 0.5);
}

.pill-card:focus-visible {
  border-color: var(--color-accent-cyan);
}

.pill-card:has(.pill-card__book-cover) {
  grid-template-columns: minmax(0, var(--pill-visual-w)) minmax(0, 1fr);
}

.pill-card__visual {
  position: relative;
  border-radius: var(--radius-md);
  background: radial-gradient(circle at 30% 20%, rgba(94, 231, 255, 0.15), transparent 55%),
    linear-gradient(160deg, #1a1730, #0f0d18);
  border: 1px solid var(--color-border);
  min-height: 8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.pill-card__visual--scene .pill-card__scene-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.pill-card__visual--scene::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    165deg,
    rgba(94, 231, 255, 0.12) 0%,
    transparent 45%,
    rgba(15, 13, 24, 0.45) 100%
  );
  pointer-events: none;
}

.pill-card__visual--book {
  width: 100%;
  min-width: 0;
  max-width: none;
  min-height: 8rem;
  padding: 0;
  margin: 0;
  border: none;
  background: none;
  border-radius: 0;
  overflow: visible;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pill-card__visual--book .pill-card__book-cover {
  width: 120%;
  max-width: none;
  height: auto;
  display: block;
  margin: -7% auto;
  object-fit: contain;
  object-position: center center;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.5));
}

.pill-card__mockup-book {
  width: 4.25rem;
  height: 6rem;
  border-radius: 4px 10px 10px 4px;
  background: linear-gradient(90deg, #2a2540 0%, #3d3558 12%, #252036 35%, #1c1830 100%);
  box-shadow:
    inset -2px 0 0 rgba(255, 255, 255, 0.06),
    6px 10px 24px rgba(0, 0, 0, 0.5);
  transform: rotateY(-18deg) rotateZ(-2deg);
  position: relative;
}

.pill-card__mockup-book::before {
  content: "";
  position: absolute;
  inset: 0.45rem 0.55rem;
  border-radius: 2px;
  background: linear-gradient(135deg, rgba(94, 231, 255, 0.12), rgba(167, 139, 250, 0.12));
}

.pill-card__mockup-orbit {
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  border: 1px dashed rgba(94, 231, 255, 0.35);
  position: relative;
  animation: orbit-pulse 5s ease-in-out infinite;
}

.pill-card__mockup-orbit::after {
  content: "";
  position: absolute;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-accent-cyan);
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 12px var(--color-glow);
}

@keyframes orbit-pulse {
  0%,
  100% {
    opacity: 0.85;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.03);
  }
}

.pill-card__mockup-mail {
  width: 4.5rem;
  height: 3.25rem;
  border-radius: 10px;
  border: 1px solid rgba(94, 231, 255, 0.35);
  background: linear-gradient(180deg, rgba(94, 231, 255, 0.08), transparent);
  position: relative;
}

.pill-card__mockup-mail::before {
  content: "";
  position: absolute;
  inset: 0.4rem;
  border-left: 1px solid rgba(167, 139, 250, 0.35);
  border-bottom: 1px solid rgba(167, 139, 250, 0.35);
  transform: skewX(-8deg);
}

.pill-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  justify-content: center;
}

.pill-card__kicker {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent-violet);
  font-weight: 600;
}

.pill-card__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.pill-card__text {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.pill-card__cta {
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent-cyan);
}

/* --- Interior pages ------------------------------------------------------- */
.page-hero {
  margin-bottom: var(--space-xl);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  border-color: rgba(94, 231, 255, 0.45);
  background: var(--color-surface-2);
}

.btn--primary {
  border: none;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  color: #0a0812;
}

.btn--primary:hover {
  color: #0a0812;
  filter: brightness(1.05);
}

.btn--ghost {
  background: transparent;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.download-box {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.download-box h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.download-box p {
  color: var(--color-text-muted);
  line-height: 1.65;
}

.download-box p + p {
  margin-top: var(--space-md);
}

.universe-char__visual {
  width: 6.5rem;
  height: 6.5rem;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(94, 231, 255, 0.25);
  background: radial-gradient(circle at 30% 20%, rgba(94, 231, 255, 0.12), transparent 55%),
    linear-gradient(160deg, #1a1730, #0f0d18);
  overflow: hidden;
}

.universe-char__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- Form (Únete) --------------------------------------------------------- */
.form-card {
  max-width: 28rem;
  margin: var(--space-xl) auto 0;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.form-card label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.form-card input[type="email"] {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-deep);
  color: var(--color-text);
  font: inherit;
  margin-bottom: var(--space-md);
}

.form-card input[type="email"].is-invalid {
  border-color: #e88a8a;
  box-shadow: 0 0 0 1px rgba(255, 180, 180, 0.35);
}

.form-card__consent {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.form-card__consent.is-invalid {
  color: #ffb4b4;
}

.form-card__consent input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
  accent-color: var(--color-accent-cyan);
  cursor: pointer;
}

.form-card__consent.is-invalid input[type="checkbox"] {
  outline: 2px solid #ffb4b4;
  outline-offset: 2px;
}

.form-card__consent label {
  display: inline;
  margin: 0;
  font-weight: 400;
  cursor: pointer;
}

.form-card__consent a {
  color: var(--color-accent-cyan);
  text-underline-offset: 0.15em;
}

.form-card__consent a:hover {
  color: var(--color-text);
}

.form-card input[type="email"]::placeholder {
  color: rgba(154, 168, 186, 0.65);
}

.form-card button[type="submit"] {
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  color: #0a0812;
}

.form-card button[type="submit"]:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-status {
  min-height: 1.5rem;
  margin-top: var(--space-md);
  font-size: 0.9rem;
}

.form-status[role="status"] {
  color: var(--color-text-muted);
}

.form-status.is-success {
  color: #7cf5c6;
}

.form-status.is-error {
  color: #ffb4b4;
}

.form-privacy-note {
  max-width: 28rem;
  margin: var(--space-md) auto 0;
  font-size: 0.75rem;
  line-height: 1.5;
  text-align: center;
  color: var(--color-text-muted);
}

.form-privacy-note a {
  color: var(--color-accent-cyan);
  text-underline-offset: 0.12em;
}

.form-privacy-note a:hover {
  color: var(--color-text);
}

/* --- Link tree ------------------------------------------------------------ */
.linktree {
  max-width: 26rem;
  margin: 0 auto;
}

.linktree__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  text-align: center;
  margin-bottom: var(--space-sm);
}

.linktree__subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-xl);
}

.linktree-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.linktree-btn {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--color-surface), var(--color-surface-2));
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  transition: border-color var(--transition), transform var(--transition);
}

.linktree-btn:hover {
  border-color: rgba(94, 231, 255, 0.4);
  transform: translateY(-1px);
  color: var(--color-text);
}

.linktree-btn__icon {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(94, 231, 255, 0.08);
  border: 1px solid rgba(94, 231, 255, 0.2);
}

.linktree-btn__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.linktree-btn__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
}

.linktree-btn__label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.linktree-btn__name {
  font-size: 1rem;
}

/* --- Reduced motion ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .pill-card__mockup-orbit {
    animation: none;
  }

  .pill-card,
  .linktree-btn,
  .btn {
    transition: none;
  }
}

/* --- Responsive ----------------------------------------------------------- */
@media (max-width: 720px) {
  .site-main {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .pill-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .pill-card:has(.pill-card__book-cover) {
    grid-template-columns: 1fr;
  }

  .pill-card__visual {
    min-height: 7rem;
    margin: 0 auto;
    max-width: 200px;
    width: 100%;
  }

  .pill-card__visual--book {
    width: var(--pill-visual-w);
    min-width: var(--pill-visual-w);
    max-width: var(--pill-visual-w);
    min-height: 7rem;
    margin: 0 auto;
  }

  .pill-card__visual--book .pill-card__book-cover {
    margin: -7% auto;
  }

  .pill-card__body {
    align-items: center;
  }

  .pill-card__text {
    max-width: 36ch;
  }

  .book-detail__cover {
    float: none;
    display: block;
    width: 14rem;
    max-width: 42%;
    margin: 0 auto var(--space-md);
  }

  .footer-nav {
    flex-direction: column;
  }

  .footer-nav__sep {
    display: none;
  }
}

@media (max-width: 480px) {
  :root {
    --header-h: 10rem;
  }

  .site-header__inner {
    padding: 1.55rem var(--space-md) var(--space-xs);
  }

  .brand img {
    max-height: 5rem;
    max-width: min(260px, 92vw);
  }

  .lang-switch {
    right: var(--space-md);
    font-size: 0.65rem;
  }

  .brand__title {
    font-size: 0.95rem;
  }
}