/* ============================================================
   VN15 — DGPC Diseño Gráfico
   ============================================================ */

:root {
  /* Paleta base */
  --clr-bg:          #06080d;
  --clr-surface:     rgba(14, 19, 30, 0.82);
  --clr-surface-2:   rgba(20, 27, 42, 0.94);
  --clr-border:      rgba(38, 55, 80, 0.8);
  --clr-border-2:    rgba(55, 78, 110, 0.9);

  /* Acento principal — azul eléctrico */
  --clr-cyan:        #00d2ff;
  --clr-cyan-dim:    rgba(0, 210, 255, 0.12);
  --clr-cyan-glow:   rgba(0, 210, 255, 0.4);

  /* Acento secundario — violeta */
  --clr-violet:      #7b5ea7;
  --clr-violet-glow: rgba(123, 94, 167, 0.35);

  /* Acento terciario — ámbar para alertas / índices */
  --clr-amber:       #f4a92a;

  /* Texto */
  --clr-white:  #dde6f3;
  --clr-grey:   #7e8fa6;
  --clr-grey-2: #49596e;

  /* Tipografías */
  --font-display: 'Barlow Condensed', sans-serif;
  --font-ui:      'Rajdhani', sans-serif;
  --font-mono:    'Share Tech Mono', monospace;

  /* Layout */
  --topbar-h: 76px;
  --mx: 0px;
  --my: 0px;

  /* Transiciones */
  --t-fast: 0.14s ease;
  --t-mid:  0.28s ease;
}

/* ── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
a { color: inherit; text-decoration: none; }
.mono  { font-family: var(--font-mono); }
.micro { font-size: 0.63rem; letter-spacing: 0.09em; }

/* ── Cursor personalizado ─────────────────── */
*, *:hover { cursor: none !important; }

#cursor-outer,
#cursor-inner {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  will-change: transform;
  transition: opacity 0.2s ease;
}

/* Anillo exterior geométrico */
#cursor-outer {
  width: 36px;
  height: 36px;
  top: -18px;
  left: -18px;
  transition: width 0.25s ease, height 0.25s ease, opacity 0.2s ease;
}
#cursor-outer svg {
  width: 100%;
  height: 100%;
  animation: cursorSpin 6s linear infinite;
}

/* Punto central */
#cursor-inner {
  width: 6px;
  height: 6px;
  top: -3px;
  left: -3px;
  background: var(--clr-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--clr-cyan);
  transition: width 0.15s ease, height 0.15s ease, border-radius 0.15s ease, opacity 0.2s ease;
}

/* Crosshair lines */
#cursor-cross {
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  top: 0; left: 0;
  width: 100%; height: 100%;
}
#cursor-cross::before,
#cursor-cross::after {
  content: '';
  position: fixed;
  background: rgba(0, 210, 255, 0.06);
  pointer-events: none;
  transition: opacity 0.2s;
}
#cursor-cross::before {
  width: 1px;
  height: 100vh;
  top: 0;
  left: var(--cursor-x, 50%);
  transform: translateX(-50%);
}
#cursor-cross::after {
  width: 100vw;
  height: 1px;
  left: 0;
  top: var(--cursor-y, 50%);
  transform: translateY(-50%);
}

/* Estado hover: expansión */
body.cursor-hover #cursor-outer {
  width: 52px;
  height: 52px;
  top: -26px;
  left: -26px;
}
body.cursor-hover #cursor-inner {
  width: 10px;
  height: 10px;
  top: -5px;
  left: -5px;
  border-radius: 2px;
  background: #ffffff;
  box-shadow: 0 0 14px #ffffff;
}

@keyframes cursorSpin { to { transform: rotate(360deg); } }

/* En mobile no se muestra el cursor custom */
@media (hover: none) {
  #cursor-outer, #cursor-inner, #cursor-cross { display: none; }
  *, *:hover { cursor: auto !important; }
}

/* ── Body ─────────────────────────────────── */
body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 68% 44% at 75% 18%, rgba(0, 210, 255, 0.09) 0%, transparent 60%),
    radial-gradient(ellipse 50% 36% at 18% 82%, rgba(123, 94, 167, 0.1) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(0, 210, 255, 0.03) 0%, transparent 70%),
    var(--clr-bg);
  color: var(--clr-white);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.5;
}

/* Overlay scanlines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(255,255,255,0.013) 0 1px,
    transparent 1px 3px
  );
  mix-blend-mode: screen;
  opacity: 0.35;
}

/* Sweep de luz */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 0%, rgba(0,210,255,0.035) 48%, transparent 52%);
  animation: lightSweep 11s linear infinite;
}
@keyframes lightSweep {
  from { transform: translateX(-130%) skewX(-12deg); }
  to   { transform: translateX(130%) skewX(-12deg); }
}

/* Canvas */
#grid-canvas {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── NAVBAR ───────────────────────────────── */
.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  min-height: var(--topbar-h);
  z-index: 100;
  display: grid;
  grid-template-columns: minmax(160px, 1fr) auto minmax(220px, 1fr);
  align-items: center;
  gap: 24px;
  padding: 0 clamp(18px, 4vw, 52px);
  background: rgba(6, 8, 13, 0.88);
  border-bottom: 1px solid var(--clr-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.catedra-logo-img {
  height: clamp(26px, 3.2vw, 42px);
  width: auto;
  max-width: min(28vw, 210px);
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}
.logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

/* Línea de acento inferior */
.topbar::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--clr-violet) 20%,
    var(--clr-cyan) 50%,
    var(--clr-violet) 80%,
    transparent 100%
  );
  opacity: 0.4;
  pointer-events: none;
}

/* Barra de escaneo animada */
.topbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -28%;
  width: 28%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-cyan), transparent);
  box-shadow: 0 0 20px var(--clr-cyan);
  animation: navScan 4.5s cubic-bezier(0.4,0,0.6,1) infinite;
  pointer-events: none;
}
@keyframes navScan { to { left: 128%; } }

/* Brand */
.brand {
  display: grid;
  grid-template-columns: auto auto;
  grid-template-areas:
    'prefix main'
    'status main';
  justify-content: start;
  align-items: center;
  column-gap: 10px;
  line-height: 1;
  transition: opacity var(--t-fast);
}
.brand:hover { opacity: 0.85; }
.brand-prefix {
  grid-area: prefix;
  color: var(--clr-cyan);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
}
.brand-main {
  grid-area: main;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, var(--clr-white) 40%, var(--clr-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 18px rgba(0,210,255,0.22));
}
.brand-status {
  grid-area: status;
  color: var(--clr-grey-2);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
}

/* Nav central */
.topnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid var(--clr-border);
  padding: 5px;
  background: rgba(11, 14, 21, 0.7);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--clr-grey);
  overflow: hidden;
  transition: color var(--t-fast), background var(--t-fast);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}
.nav-link span {
  color: var(--clr-cyan);
  font-size: 0.6rem;
  opacity: 0.7;
}
.nav-link::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--clr-cyan-dim), transparent);
  transform: translateX(-130%);
  transition: transform var(--t-mid);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--clr-white);
  background: rgba(0,210,255,0.07);
  outline: none;
}
.nav-link:hover::after,
.nav-link:focus-visible::after { transform: translateX(130%); }

/* Header right */
.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  height: 100%;
}
.header-data {
  display: flex;
  flex-direction: column;
  align-items: end;
  color: var(--clr-grey-2);
  line-height: 1.5;
}
#live-time {
  color: var(--clr-cyan);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

/* ── MAIN / HERO ──────────────────────────── */
main { position: relative; z-index: 1; }

.hero {
  position: relative;
  min-height: 100svh;
  padding: calc(var(--topbar-h) + 52px) clamp(20px, 5vw, 72px) 72px;
  display: grid;
  align-items: center;
}

/* Decorative corner brackets */
.hero-grid-overlay {
  position: absolute;
  inset: calc(var(--topbar-h) + 20px) 20px 20px;
  pointer-events: none;
}
.grid-corner { position: absolute; width: 32px; height: 32px; }
.top-left    { top: 0; left: 0; }
.top-right   { top: 0; right: 0; }
.bottom-left { bottom: 0; left: 0; }
.bottom-right{ bottom: 0; right: 0; }
.corner-line { position: absolute; background: var(--clr-cyan); opacity: 0.4; }
.corner-line.h { width: 100%; height: 1px; }
.corner-line.v { width: 1px; height: 100%; }
.top-left .h,    .top-right .h    { top: 0; }
.bottom-left .h, .bottom-right .h { bottom: 0; }
.top-left .v,    .bottom-left .v  { left: 0; }
.top-right .v,   .bottom-right .v { right: 0; }

/* Corner dots */
.grid-corner::before,
.grid-corner::after {
  content: '';
  position: absolute;
  width: 4px; height: 4px;
  background: var(--clr-cyan);
  border-radius: 50%;
  animation: cornerPulse 3s ease-in-out infinite;
}
.top-left::before    { top: -1px; left: -1px; }
.top-right::after    { top: -1px; right: -1px; animation-delay: 0.75s; }
.bottom-left::before { bottom: -1px; left: -1px; animation-delay: 1.5s; }
.bottom-right::after { bottom: -1px; right: -1px; animation-delay: 2.25s; }
@keyframes cornerPulse {
  0%, 100% { opacity: 0.4; box-shadow: none; }
  50%       { opacity: 1; box-shadow: 0 0 10px var(--clr-cyan); }
}

/* HUD tags */
.hud-tag {
  position: absolute;
  color: var(--clr-grey-2);
  line-height: 1.6;
  border: 1px solid var(--clr-border);
  padding: 6px 10px;
  background: rgba(6, 8, 13, 0.7);
  backdrop-filter: blur(6px);
}
.hud-tag--tl { top: calc(var(--topbar-h) + 28px); left: clamp(20px, 5vw, 72px); }
.hud-tag--br { bottom: 28px; right: clamp(20px, 5vw, 72px); text-align: right; }

/* Hero layout */
.hero-layout {
  width: min(1200px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.8fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: center;
}

/* ── Hero Content ──────────────────────────── */
.hero-content { animation: fadeUp 0.7s ease both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-overline {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--clr-cyan);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.overline-dash { opacity: 0.5; letter-spacing: -0.05em; }

/* Badge decorativo en la overline */
.hero-overline::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--clr-cyan);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  animation: diamondPulse 2s ease-in-out infinite;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1;
  margin-bottom: 18px;
}
.title-group {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 300;
  letter-spacing: 0.42em;
  color: var(--clr-grey);
  text-transform: uppercase;
}
.title-vn15 {
  font-family: var(--font-display);
  font-size: clamp(5.5rem, 13vw, 10rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 0.88;
  /* gradiente de texto */
  background: linear-gradient(
    120deg,
    var(--clr-white) 0%,
    var(--clr-cyan) 45%,
    rgba(0,210,255,0.6) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 36px rgba(0,210,255,0.28));
  position: relative;
  animation: heroGlitch 9s ease-in-out infinite;
}
/* Glitch sutil */
.title-vn15::before {
  content: attr(data-text);
  position: absolute;
  left: 3px; top: 0;
  background: linear-gradient(120deg, rgba(123,94,167,0.8), transparent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  clip-path: polygon(0 30%, 100% 30%, 100% 50%, 0 50%);
  opacity: 0;
  animation: glitch 9s ease-in-out infinite;
}
@keyframes heroGlitch {
  0%,88%,100% { filter: drop-shadow(0 0 36px rgba(0,210,255,0.28)); }
  90% { filter: drop-shadow(0 0 36px rgba(0,210,255,0.28)) drop-shadow(3px 0 0 rgba(123,94,167,0.5)); }
  92% { filter: drop-shadow(0 0 36px rgba(0,210,255,0.28)) drop-shadow(-3px 0 0 rgba(0,210,255,0.6)); }
}
@keyframes glitch {
  0%,88%,100% { opacity: 0; transform: none; }
  90% { opacity: 0.5; transform: translateX(3px); clip-path: polygon(0 16%, 100% 16%, 100% 30%, 0 30%); }
  92% { opacity: 0.4; transform: translateX(-3px); clip-path: polygon(0 62%, 100% 62%, 100% 76%, 0 76%); }
  94% { opacity: 0; }
}

.hero-subtitle {
  margin-bottom: 26px;
  color: var(--clr-cyan);
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.8vw, 1.35rem);
  font-weight: 300;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.85;
}

.hero-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}
.divider-line {
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: linear-gradient(90deg, var(--clr-border), var(--clr-border-2));
}
.divider-diamond {
  width: 7px; height: 7px;
  border: 1px solid var(--clr-cyan);
  animation: diamondPulse 2.4s ease-in-out infinite;
}
@keyframes diamondPulse {
  0%,100% { box-shadow: none; }
  50%      { box-shadow: 0 0 14px var(--clr-cyan); }
}

.hero-description {
  max-width: 520px;
  color: var(--clr-grey);
  font-size: 0.97rem;
  line-height: 1.82;
  border-left: 2px solid var(--clr-border-2);
  padding-left: 18px;
  position: relative;
}
.hero-description::before {
  content: '';
  position: absolute;
  left: -1px; top: 0;
  width: 2px; height: 40%;
  background: linear-gradient(180deg, var(--clr-cyan), transparent);
}

/* ── Floating members ─────────────────────── */
.floating-members {
  position: relative;
  border: 1px solid var(--clr-border);
  background: linear-gradient(160deg,
    rgba(14,19,30,0.88) 0%,
    rgba(6,8,13,0.55) 100%
  );
  padding: 24px;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  box-shadow:
    0 0 0 1px rgba(0,210,255,0.06),
    0 28px 80px rgba(0,0,0,0.4),
    inset 0 0 40px rgba(0,210,255,0.02);
  transform: translate(calc(var(--mx) * 0.3), calc(var(--my) * 0.22));
  animation: panelIn 0.7s 0.2s ease both, panelBreath 6s ease-in-out infinite 0.9s;
  backdrop-filter: blur(8px);
}
@keyframes panelIn {
  from { opacity: 0; transform: translateX(28px) translateY(10px); }
  to   { opacity: 1; transform: translateX(0) translateY(0); }
}
@keyframes panelBreath {
  50% { box-shadow: 0 0 0 1px rgba(0,210,255,0.1), 0 28px 90px rgba(0,0,0,0.4), 0 0 60px rgba(0,210,255,0.05); }
}

/* Sweep de luz sobre el panel */
.floating-members::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    transparent 0 42%,
    rgba(0,210,255,0.06) 48%,
    transparent 54% 100%
  );
  transform: translateX(-130%);
  animation: panelScan 7s linear infinite;
  pointer-events: none;
}
@keyframes panelScan { to { transform: translateX(130%); } }

/* Línea de acento en el borde superior */
.floating-members::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 45%; height: 1px;
  background: linear-gradient(90deg, var(--clr-cyan), transparent);
  opacity: 0.5;
}

.panel-head { margin-bottom: 20px; }
.section-label {
  display: block;
  margin-bottom: 6px;
  color: var(--clr-cyan);
  font-size: 0.63rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.panel-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--clr-white), var(--clr-grey));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Member cards */
.members-stack { display: grid; gap: 12px; }

.member-card {
  position: relative;
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  align-items: center;
  gap: 14px;
  min-height: 88px;
  padding: 16px 18px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: transform var(--t-mid), border-color var(--t-mid), background var(--t-mid), box-shadow var(--t-mid);
  animation: floatCard 5s ease-in-out infinite;
}
.member-card:nth-child(2) { margin-left: 24px; animation-delay: -1.6s; }
.member-card:nth-child(3) { margin-left: 8px;  animation-delay: -3.1s; }
@keyframes floatCard {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.member-card:nth-child(2) { --card-accent: var(--clr-violet); }
.member-card:nth-child(3) { --card-accent: var(--clr-amber); }
.member-card { --card-accent: var(--clr-cyan); }

.member-card:hover,
.member-card:focus-visible {
  z-index: 2;
  border-color: var(--card-accent);
  background: rgba(14,19,30,0.96);
  box-shadow:
    0 0 0 1px rgba(0,210,255,0.12),
    0 0 36px rgba(0,210,255,0.14),
    inset 0 0 20px rgba(0,210,255,0.03);
  transform: translateY(-8px) scale(1.02) !important;
  outline: none;
}

.card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* Borde de acento variable en hover */
.member-card:nth-child(2):hover {
  box-shadow:
    0 0 0 1px rgba(123,94,167,0.2),
    0 0 36px rgba(123,94,167,0.12);
}
.member-card:nth-child(3):hover {
  box-shadow:
    0 0 0 1px rgba(244,169,42,0.2),
    0 0 36px rgba(244,169,42,0.1);
}


.card-index {
  color: var(--clr-grey-2);
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
  font-size: 0.6rem;
}
.card-avatar {
  width: 50px; height: 50px;
  display: grid;
  place-items: center;
  border: 1px solid var(--clr-border-2);
  background: var(--clr-surface-2);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: border-color var(--t-mid), box-shadow var(--t-mid), transform var(--t-mid), background var(--t-mid);
  position: relative;
  overflow: hidden;
}
/* Fondo degradado sutil en avatar según posición */
.member-card:nth-child(1) .card-avatar { background: linear-gradient(135deg, rgba(14,19,30,0.94), rgba(0,210,255,0.06)); }
.member-card:nth-child(2) .card-avatar { background: linear-gradient(135deg, rgba(14,19,30,0.94), rgba(123,94,167,0.08)); }
.member-card:nth-child(3) .card-avatar { background: linear-gradient(135deg, rgba(14,19,30,0.94), rgba(244,169,42,0.07)); }

.member-card:hover .card-avatar {
  border-color: var(--card-accent);
  box-shadow: 0 0 18px rgba(0,210,255,0.2);
  transform: rotate(3deg);
}

.card-name {
  margin-bottom: 3px;
  color: var(--clr-white);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.card-role {
  display: block;
  color: var(--clr-grey-2);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.card-arrow {
  color: var(--card-accent);
  font-size: 1.3rem;
  opacity: 0.45;
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.member-card:hover .card-arrow,
.member-card:focus-visible .card-arrow {
  transform: translateX(5px);
  opacity: 1;
}

/* Anchor sections */
.anchor-section {
  height: 1px;
  min-height: 1px;
  scroll-margin-top: calc(var(--topbar-h) + 20px);
}

/* ── FOOTER ───────────────────────────────── */
.site-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--clr-border);
  background: rgba(6, 8, 13, 0.92);
  backdrop-filter: blur(10px);
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--clr-violet-glow) 30%,
    var(--clr-cyan-glow) 60%,
    transparent 100%
  );
  opacity: 0.35;
}
.footer-left,
.footer-right { color: var(--clr-grey-2); letter-spacing: 0.08em; }
.footer-right  { text-align: right; }

/* ── RESPONSIVE ─────────────────────────────
   Breakpoints: 1024, 760, 480
   ─────────────────────────────────────────── */

/* Tablet landscape */
@media (max-width: 1024px) {
  .topbar {
    grid-template-columns: auto 1fr auto;
    gap: 16px;
  }
  .header-data { display: none; }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-content  { max-width: 720px; }
  .floating-members {
    max-width: 680px;
    transform: none !important;
  }
  .members-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }
  .member-card,
  .member-card:nth-child(2),
  .member-card:nth-child(3) {
    margin-left: 0;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto auto;
    min-height: 160px;
    padding: 16px;
    align-items: start;
    gap: 8px;
  }
  .card-index  { display: none; }
  .card-avatar { grid-column: 1; grid-row: 1; }
  .member-card > div { grid-column: 1 / -1; }
  .card-arrow  { display: none; }
  .card-name   { font-size: 1rem; }
}

/* Tablet portrait */
@media (max-width: 760px) {
  :root { --topbar-h: 114px; }

  .topbar {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      'brand header'
      'nav   nav';
    gap: 8px 12px;
    padding: 10px 16px;
  }
  .brand        { grid-area: brand; }
  .brand-main   { font-size: 1.9rem; }
  .brand-status,
  .brand-prefix { display: none; }
  .topnav {
    grid-area: nav;
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .topnav::-webkit-scrollbar { display: none; }
  .nav-link {
    flex: 1;
    justify-content: center;
    padding: 8px 10px;
    font-size: 0.84rem;
  }
  .header-right  { grid-area: header; gap: 8px; }

  .hero {
    padding: calc(var(--topbar-h) + 28px) 18px 52px;
    min-height: auto;
  }
  .hero-grid-overlay { display: none; }
  .hud-tag { display: none; }

  .title-group { letter-spacing: 0.3em; }
  .title-vn15  { font-size: clamp(4.8rem, 26vw, 7rem); }

  .hero-description {
    font-size: 0.93rem;
    border-left-width: 1px;
    padding-left: 14px;
  }

  .floating-members {
    padding: 18px;
    transform: none !important;
    clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  }
  .members-stack { grid-template-columns: 1fr; gap: 10px; }
  .member-card,
  .member-card:nth-child(2),
  .member-card:nth-child(3) {
    margin-left: 0;
    min-height: 82px;
    grid-template-columns: auto auto 1fr;
    grid-template-rows: auto;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
  }
  .member-card > div { grid-column: auto; }
  .card-avatar { width: 42px; height: 42px; }
  .card-name   { font-size: 1.05rem; }
  .card-arrow  { display: block; }

  .site-footer {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }
  .footer-right { text-align: center; }
}

/* Mobile portrait */
@media (max-width: 480px) {
  .hero {
    padding-left: 16px;
    padding-right: 16px;
  }
  .title-vn15 { font-size: clamp(4rem, 28vw, 6rem); }
  .hero-overline { font-size: 0.6rem; }
  .hero-subtitle { font-size: 0.9rem; letter-spacing: 0.16em; }
  .nav-link span { display: none; }
  .nav-link { font-size: 0.82rem; padding: 7px 8px; }
}

/* ── Reduced motion ───────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
  #cursor-outer svg { animation: none !important; }
}