/* ============ LAYOUT: sidebar a la izquierda ============ */
@media(min-width:901px){
  body{padding-left:248px}
}

/* ============ TOGGLE (mobile) ============ */
.hud-toggle{
  position:fixed;top:18px;left:18px;z-index:120;
  width:42px;height:42px;display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  background:rgba(11,13,16,.85);border:1px solid var(--panel-border);
  clip-path:polygon(0 0,100% 0,100% 100%,10px 100%,0 calc(100% - 10px));
  cursor:pointer;backdrop-filter:blur(8px);
}
.hud-toggle span{width:18px;height:2px;background:var(--teal)}
.hud-toggle.hidden{display:none}
@media(max-width:900px){
  .hud-toggle{display:flex}
  body{padding-top:76px}
}

.hud-backdrop{
  position:fixed;inset:0;background:rgba(5,6,8,.7);z-index:110;
  opacity:0;pointer-events:none;transition:opacity .25s;
}
.hud-backdrop.show{opacity:1;pointer-events:auto}

/* ============ SIDEBAR ============ */
.hud-nav{
  position:fixed;top:0;left:0;bottom:0;width:224px;z-index:115;
  display:flex;flex-direction:column;gap:26px;
  padding:26px 18px;
  background:linear-gradient(180deg,rgba(10,12,15,.96),rgba(9,10,13,.92));
  border-right:1px solid var(--panel-border);
  box-shadow:0 0 40px rgba(0,0,0,.4);
  overflow-y:auto;
}
@media(max-width:900px){
  .hud-nav{transform:translateX(-100%);transition:transform .3s ease}
  .hud-nav.open{transform:translateX(0)}
}

.hud-brand{display:flex;align-items:center;gap:10px;padding:0 4px}
.hud-mark{
  width:30px;height:30px;flex-shrink:0;
  background:linear-gradient(135deg,var(--teal),#0a7c72);
  clip-path:polygon(20% 0,100% 0,100% 80%,80% 100%,0 100%,0 20%);
  display:flex;align-items:center;justify-content:center;
  font-family:'Space Grotesk',sans-serif;font-weight:800;font-size:13px;color:#04211e;
  box-shadow:0 0 18px rgba(0,210,190,.45);
}
.hud-word{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:14.5px;letter-spacing:2px}
.hud-word em{font-style:normal;color:var(--teal)}

.hud-links{display:flex;flex-direction:column;gap:6px;flex:1}
.hud-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px 11px 14px;text-decoration:none;color:var(--muted);
  background:rgba(255,255,255,.02);border:1px solid transparent;
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:color .2s,background .2s,border-color .2s;
}
.hud-link::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--teal);transform:scaleY(0);transition:transform .2s;transform-origin:top;
}
.hud-link:hover{color:var(--ink);background:rgba(0,210,190,.06);border-color:rgba(0,210,190,.2)}
.hud-link:hover::before{transform:scaleY(1)}
.hud-link.active{color:var(--ink);background:rgba(0,210,190,.1);border-color:rgba(0,210,190,.35)}
.hud-link.active::before{transform:scaleY(1)}
.hud-idx{
  font-family:'Space Grotesk',sans-serif;font-size:10px;font-weight:700;color:var(--teal);
  opacity:.7;letter-spacing:.5px;
}
.hud-label{font-family:'Space Grotesk',sans-serif;font-size:12.5px;font-weight:600;letter-spacing:1px;text-transform:uppercase}

.hud-login-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(0,210,190,.08);border:1px solid rgba(0,210,190,.4);color:var(--ink);
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:11px;letter-spacing:1.3px;
  padding:11px 12px;cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:background .2s,border-color .2s;
}
.hud-login-btn:hover{background:rgba(0,210,190,.16);border-color:var(--teal)}

.hud-profile{
  display:flex;align-items:center;gap:10px;cursor:pointer;
  background:rgba(255,255,255,.03);border:1px solid var(--panel-border);color:var(--ink);
  padding:9px 10px;
  clip-path:polygon(0 0,100% 0,100% 100%,12px 100%,0 calc(100% - 12px));
  transition:background .2s,border-color .2s;
}
.hud-profile:hover{background:rgba(0,210,190,.08);border-color:rgba(0,210,190,.35)}
.hud-avatar{
  width:30px;height:30px;flex-shrink:0;border-radius:9px;
  background:linear-gradient(135deg,var(--teal),#0a7c72);
  display:flex;align-items:center;justify-content:center;
  font-family:'Space Grotesk',sans-serif;font-weight:800;font-size:12.5px;color:#04211e;
}
.hud-profile-info{min-width:0;display:flex;flex-direction:column}
.hud-profile-name{
  font-family:'Space Grotesk',sans-serif;font-size:12px;font-weight:700;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.hud-profile-tier{font-size:9.5px;color:var(--muted);letter-spacing:.5px}

.hud-social{font-size:10px;color:var(--hint);letter-spacing:1px;text-align:center}
.hud-social b{color:var(--pink)}
.hud-social a{color:inherit;text-decoration:none}
.hud-social a:hover{text-decoration:underline}

/* ============ PAGE HEADER (cursos / stls / tienda) ============ */
.page-header{
  padding:32px 34px;margin-bottom:44px;
  background:var(--panel);border:1px solid var(--panel-border);
}
.page-eyebrow{
  font-family:'Space Grotesk',sans-serif;font-size:10.5px;font-weight:700;letter-spacing:3px;
  color:var(--teal);margin-bottom:10px;
}
.page-title{font-family:'Space Grotesk',sans-serif;font-size:34px;font-weight:700;letter-spacing:-.5px}
.page-sub{color:var(--muted);font-size:14px;margin-top:8px;max-width:520px;line-height:1.6}