/* ═══ Writeups landing — hero + destacados + recientes (hub) ═══════════ */

.writeups-container--hub {
  max-width: min(1180px, 96vw);
  margin-left: auto;
  margin-right: auto;
}

/* Marcas de plataforma — PNG originales (repo: /images/writeups/) */
:root {
  --wu-plat-htb: url("/images/writeups/logo-hackthebox.png");
  --wu-plat-thm: url("/images/writeups/logo-tryhackme.png");
  --wu-plat-pico: url("/images/writeups/logo-picoctf.png");
}

.wu-plat-icon {
  display: block;
  flex-shrink: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.wu-platform-chip .wu-plat-icon {
  width: 22px;
  height: 22px;
}

.wu-card__icon--logo .wu-plat-icon {
  width: 40px;
  height: 40px;
}

.wu-plat-icon--hackthebox {
  background-image: var(--wu-plat-htb);
}

.wu-plat-icon--tryhackme {
  background-image: var(--wu-plat-thm);
}

.wu-plat-icon--picoctf {
  background-image: var(--wu-plat-pico);
}

/* ── Hero ── */
.wu-hero {
  margin: 0 0 2rem;
}

.wu-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  min-height: clamp(300px, 42vw, 460px);
  min-width: 0;
  border: 1px solid rgba(139, 92, 246, 0.38);
  border-radius: 1.05rem;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 22px 56px rgba(0, 2, 12, 0.5),
    0 0 28px rgba(88, 28, 135, 0.14);
}

.wu-hero__panel {
  order: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(22px, 3.5vw, 42px) clamp(20px, 3vw, 36px);
  background: linear-gradient(118deg, rgba(4, 6, 14, 0.94) 0%, rgba(6, 4, 18, 0.9) 50%, rgba(8, 10, 22, 0.88) 100%);
}

.wu-hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 14px;
  margin: 0 0 1.1rem;
  width: 100%;
}

.wu-hero__glyph {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 50%;
  color: #c4b5fd;
  background: rgba(8, 6, 20, 0.35);
  border: 1.5px solid rgba(167, 139, 250, 0.65);
  box-shadow:
    0 0 0 1px rgba(0, 255, 255, 0.08),
    0 0 36px rgba(138, 43, 226, 0.55),
    0 0 60px rgba(99, 102, 241, 0.2);
}

.wu-hero__glyph .bxf-ico {
  width: 22px;
  height: 22px;
  opacity: 0.95;
  filter: drop-shadow(0 0 6px rgba(0, 255, 255, 0.35));
}

.wu-hero__eyebrow {
  display: inline-flex;
  margin: 0;
  padding: 10px clamp(22px, 3.2vw, 36px);
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #f8fafc;
  border: 1px solid rgba(139, 92, 246, 0.45);
  border-radius: var(--bxf-radius-full, 9999px);
  background: rgba(6, 8, 22, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 0 20px rgba(88, 28, 135, 0.25);
}

.wu-hero__title {
  margin: 0 0 1rem;
  width: 100%;
  font-family: var(--font-heading, "Segoe UI", system-ui, sans-serif);
  font-size: clamp(2.5rem, 4.2vw, 3.4rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--bxf-mega-title-gradient, linear-gradient(95deg, #9ae6d4 0%, #c4b5fd 100%));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: var(--bxf-mega-title-filter, drop-shadow(0 0 20px rgba(198, 157, 255, 0.25)));
}

.wu-hero__lead {
  margin: 0 0 1.35rem;
  max-width: 38rem;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: clamp(0.84rem, 1.12vw, 0.95rem);
  line-height: 1.65;
  letter-spacing: 0.03em;
  color: rgba(226, 232, 240, 0.88);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.85);
}

.wu-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
  max-width: 36rem;
  border-radius: 14px;
  border: 1px solid rgba(167, 139, 250, 0.38);
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.06) 0%, transparent 42%),
    linear-gradient(118deg, rgba(24, 12, 40, 0.92), rgba(6, 4, 14, 0.88));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 10px 36px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(88, 28, 135, 0.22);
}

.wu-search-wrap:focus-within {
  border-color: rgba(216, 180, 254, 0.55);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.09),
    0 0 0 1px rgba(192, 132, 252, 0.35),
    0 12px 40px rgba(76, 29, 149, 0.35),
    0 0 48px rgba(139, 92, 246, 0.22);
}

/* reboot-ui aplica border/bg a todos los input con !important — anular solo aquí */
.writeups-container--hub .wu-search-wrap .wu-search-input,
.wu-hero .wu-search-wrap .wu-search-input {
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
  min-height: 0 !important;
  border-radius: 0 !important;
}

.writeups-container--hub .wu-search-wrap .wu-search-input:focus,
.wu-hero .wu-search-wrap .wu-search-input:focus {
  border: none !important;
  box-shadow: none !important;
  outline: none !important;
}

.wu-search-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  flex-shrink: 0;
  color: rgba(216, 180, 254, 0.82);
}

.wu-search-icon svg {
  width: 20px;
  height: 20px;
}

.wu-search-input {
  flex: 1;
  min-width: 0;
  padding: 16px 12px 16px 0;
  border: none;
  background: transparent;
  color: var(--text-main, #e2e8f0);
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  outline: none;
}

.wu-search-input::placeholder {
  color: rgba(148, 163, 184, 0.65);
}

.wu-search-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  flex-shrink: 0;
  color: rgba(233, 213, 255, 0.75);
  font-size: 1.1rem;
  opacity: 0.9;
}

.wu-platform-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  max-width: 36rem;
  padding: 6px;
  border-radius: 14px;
  background: rgba(4, 2, 12, 0.55);
  border: 1px solid rgba(88, 28, 135, 0.42);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 8px 28px rgba(0, 0, 0, 0.35);
}

.wu-platform-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid rgba(55, 40, 82, 0.85);
  background: rgba(12, 8, 22, 0.72);
  color: rgba(237, 233, 254, 0.88);
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    border-color 0.2s var(--bxf-ease-out, ease),
    background 0.2s var(--bxf-ease-out, ease),
    box-shadow 0.2s var(--bxf-ease-out, ease),
    color 0.2s var(--bxf-ease-out, ease),
    transform 0.2s var(--bxf-ease-out, ease);
}

.wu-platform-chip:hover {
  border-color: rgba(167, 139, 250, 0.5);
  background: rgba(36, 22, 58, 0.75);
  color: #faf5ff;
  transform: translateY(-1px);
}

.wu-platform-chip:active {
  transform: translateY(0);
}

.wu-platform-chip.is-active {
  border-color: rgba(216, 180, 254, 0.65);
  background: linear-gradient(155deg, rgba(88, 28, 135, 0.65) 0%, rgba(30, 18, 48, 0.95) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 0 22px rgba(168, 85, 247, 0.28),
    0 0 0 1px rgba(192, 132, 252, 0.22);
  color: #faf5ff;
}

.wu-platform-chip:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px rgba(12, 6, 22, 0.95),
    0 0 0 4px rgba(192, 132, 252, 0.45) !important;
}

.wu-platform-chip__flag {
  font-size: 1rem;
  line-height: 1;
}

.wu-hero__art {
  order: 2;
  position: relative;
  min-height: 240px;
  overflow: hidden;
  isolation: isolate;
}

.wu-hero__layers,
.wu-hero__layer {
  position: absolute;
  inset: 0;
}

.wu-hero__layer--image {
  background-color: #050308;
  background-image: url("/images/writeups-hero.png");
  background-size: cover;
  background-position: 62% 42%;
  background-repeat: no-repeat;
  filter: saturate(1.06) contrast(1.06) brightness(0.93);
  transform: scale(1.04);
  transform-origin: 58% 40%;
}

.wu-hero__layer--glow {
  background:
    radial-gradient(ellipse 85% 65% at 75% 25%, rgba(168, 85, 247, 0.2), transparent 50%),
    radial-gradient(ellipse 60% 55% at 15% 85%, rgba(198, 157, 255, 0.08), transparent 45%);
  mix-blend-mode: screen;
  opacity: 0.82;
}

.wu-hero__layer--vignette {
  background:
    linear-gradient(90deg, rgba(2, 4, 12, 0.5) 0%, rgba(2, 4, 12, 0.12) 32%, rgba(2, 4, 12, 0) 55%),
    radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.5) 100%);
}

.wu-hero__layer--noise {
  opacity: 0.055;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 160px 160px;
}

@media (max-width: 900px) {
  .wu-hero__split {
    grid-template-columns: 1fr;
  }

  .wu-hero__art {
    min-height: min(44vw, 260px);
  }

  .wu-hero__layer--image {
    background-position: 50% 38%;
    transform: scale(1.02);
  }
}

/* ── Section labels ── */
.wu-section-head {
  margin: 0 0 1rem;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(248, 250, 252, 0.88);
}

/* ── Destacados ── */
.wu-featured {
  margin-bottom: 2.25rem;
}

.wu-featured-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 18px);
}

@media (max-width: 820px) {
  .wu-featured-grid {
    grid-template-columns: 1fr;
  }
}

.wu-card {
  position: relative;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 12px;
  min-height: 118px;
  padding: 18px 16px 18px 20px;
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(155deg, rgba(16, 14, 24, 0.95), rgba(6, 6, 10, 0.98));
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.4);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.wu-card:hover {
  transform: translateY(-3px);
  border-color: rgba(168, 85, 247, 0.4);
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.45),
    0 0 36px rgba(124, 58, 237, 0.12);
}

.wu-card__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  min-width: 0;
}

.wu-card__title {
  margin: 0;
  font-family: var(--font-heading, system-ui, sans-serif);
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #f8fafc;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.9);
}

.wu-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.wu-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.wu-pill--easy {
  color: #86efac;
  border-color: rgba(74, 222, 128, 0.45);
  background: rgba(22, 101, 52, 0.2);
}

.wu-pill--medium {
  color: #fcd34d;
  border-color: rgba(251, 191, 36, 0.45);
  background: rgba(120, 53, 15, 0.25);
}

.wu-pill--linux {
  color: #e9d5ff;
  border-color: rgba(167, 139, 250, 0.45);
  background: rgba(88, 28, 135, 0.22);
}

.wu-pill--web {
  color: #e9d5ff;
  border-color: rgba(167, 139, 250, 0.45);
  background: rgba(58, 28, 88, 0.35);
}

.wu-pill--hard {
  color: #fca5a5;
  border-color: rgba(248, 113, 113, 0.45);
  background: rgba(127, 29, 29, 0.22);
}

.wu-card__icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  align-self: center;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}

.wu-card__icon--logo {
  padding: 6px;
  background: rgba(4, 4, 6, 0.96);
  border-color: rgba(255, 255, 255, 0.1);
}

/* ── Recientes (lista fila) ── */
.wu-recent {
  scroll-margin-top: 88px;
  margin-bottom: 1.75rem;
}

.writeups-container--hub .wu-recents-list {
  display: block;
  list-style: none;
  padding: 0;
  margin: 0;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.writeups-container--hub .wu-recents-list .writeup-item {
  opacity: 1;
  transform: none;
  margin: 0;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: none;
  background: transparent;
}

.writeups-container--hub .wu-recents-list .writeup-item:last-child {
  border-bottom: none;
}

.writeups-container--hub .wu-recents-list .writeup-item::before,
.writeups-container--hub .wu-recents-list .writeup-item::after {
  display: none;
}

.writeups-container--hub .wu-recents-list .writeup-item:hover {
  transform: none;
  background: rgba(88, 28, 135, 0.08);
  border-color: transparent;
  box-shadow: none;
}

.writeups-container--hub .wu-recents-list .writeup-link {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto auto auto;
  align-items: center;
  gap: clamp(10px, 2vw, 18px);
  padding: 14px 18px;
}

@media (max-width: 640px) {
  .writeups-container--hub .wu-recents-list .writeup-link {
    grid-template-columns: 36px minmax(0, 1fr);
    grid-template-rows: auto auto;
  }

  .writeups-container--hub .wu-recents-list .writeup-link .wu-row__diff,
  .writeups-container--hub .wu-recents-list .writeup-link .wu-row__cat,
  .writeups-container--hub .wu-recents-list .writeup-link .wu-row__date {
    grid-column: 2;
  }

  .writeups-container--hub .wu-recents-list .writeup-link .wu-row__diff {
    grid-row: 2;
    justify-self: start;
  }

  .writeups-container--hub .wu-recents-list .writeup-link .wu-row__cat {
    grid-row: 2;
    justify-self: center;
  }

  .writeups-container--hub .wu-recents-list .writeup-link .wu-row__date {
    grid-row: 2;
    justify-self: end;
  }
}

.wu-row__brand {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background-color: rgba(6, 6, 8, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.wu-row__brand--hackthebox {
  background-image: var(--wu-plat-htb);
}

.wu-row__brand--tryhackme {
  background-image: var(--wu-plat-thm);
}

.wu-row__brand--picoctf {
  background-image: var(--wu-plat-pico);
}

.wu-row__brand--other {
  background-image: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  line-height: 1;
}

.wu-row__brand--other::before {
  content: "";
  display: block;
  width: 1.1rem;
  height: 1.1rem;
  margin: 0 auto;
  background-color: currentColor;
  -webkit-mask-image: var(--bxf-mask-flag);
  mask-image: var(--bxf-mask-flag);
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.wu-row__info {
  min-width: 0;
}

.wu-row__line1 {
  display: block;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.88rem;
  color: #f1f5f9;
  letter-spacing: 0.02em;
}

.wu-row__plat {
  color: rgba(226, 232, 240, 0.92);
  font-weight: 600;
}

.wu-row__dot {
  margin: 0 0.35rem;
  color: rgba(148, 163, 184, 0.75);
}

.wu-row__name {
  color: rgba(248, 250, 252, 0.95);
  font-weight: 700;
}

.wu-row__date {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(148, 163, 184, 0.75);
  white-space: nowrap;
}

/* CTA */
.wu-footer-cta {
  display: flex;
  justify-content: center;
  margin: 0 0 2.5rem;
}

.wu-btn-all {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  border-radius: 12px;
  border: 1px solid rgba(168, 85, 247, 0.55);
  background: transparent;
  color: #e9d5ff;
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.wu-btn-all:hover {
  background: rgba(88, 28, 135, 0.2);
  border-color: rgba(196, 181, 253, 0.75);
  box-shadow: 0 0 28px rgba(124, 58, 237, 0.2);
}

.wu-btn-all:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.35);
}