/* =========================
   VKORP • RUST Left Menu
   ========================= */

:root{
  --accent: #7b2cff;        /* Accent VKORP (modifiable) */
  --panel: rgba(10,10,12,.72);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.42);
  --muted2: rgba(255,255,255,.26);
  --shadow: rgba(0,0,0,.55);
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: url("/vkorp_image/vkorp_background.jpg") center/cover no-repeat fixed;
  color: var(--text);
}

/* voile léger pour lisibilité */
body::before{
  content:"";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 10%, rgba(0,0,0,.15), rgba(0,0,0,.75));
  pointer-events: none;
}

/* =========================
   Left Menu Container
   ========================= */
.vkorp-leftmenu{
  position: relative;
  z-index: 1;
  height: 100vh;
  width: 360px;
  padding: 28px 22px 20px 22px;

  background: linear-gradient(to bottom, rgba(12,12,14,.82), rgba(8,8,10,.68));
  box-shadow: 20px 0 40px rgba(0,0,0,.35);
  backdrop-filter: blur(2px);

  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* =========================
   Brand / Header
   ========================= */
.vkorp-brand{
  display: grid;
  gap: 10px;
  padding: 6px 0 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.vkorp-brand__logo{
  display: flex;
  align-items: center;
}

/* TON LOGO (style “RUST-like” en haut) */
.vkorp-brand__logo img{
  width: 100px;            /* taille du logo */
  height: auto;
  display: block;
  filter: drop-shadow(0 10px 18px var(--shadow));
}

.vkorp-brand__subtitle{
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.72);
}

/* =========================
   Nav Items (Rust-like)
   ========================= */
.vkorp-nav{
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 6px;
}

.vkorp-nav__item{
  position: relative;
  display: block;
  padding: 14px 14px;
  text-decoration: none;

  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;

  color: var(--muted);
  border-radius: 2px;

  transition: transform .08s ease, color .12s ease, background-color .12s ease;
}

.vkorp-nav__item:hover{
  color: rgba(255,255,255,.78);
  transform: translateX(2px);
}

.vkorp-nav__item[data-active="true"]{
  background: var(--accent);
  color: rgba(255,255,255,.98);
  box-shadow: 0 14px 28px rgba(0,0,0,.22);
}

.vkorp-nav__item[data-active="true"]::after{
  content:"";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: rgba(255,255,255,.16);
}

/* Footer */
.vkorp-footer{
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}

.vkorp-nav__item--muted{
  color: var(--muted2);
}

.vkorp-nav__item--muted:hover{
  color: rgba(255,255,255,.58);
}