/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;border:1px solid transparent;
}
.btn-primary{background:var(--accent-primary);color:#fff;box-shadow:0 8px 20px -8px var(--accent-glow)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 14px 30px -10px var(--accent-glow)}
.btn-ghost{background:transparent;color:var(--text-dark);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--accent-primary);color:var(--accent-primary)}
.btn-ghost.on-dark{color:var(--text-light);border-color:rgba(255,255,255,.18)}
.btn-ghost.on-dark:hover{border-color:#fff;color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:8px 14px;font-size:.85rem}
.btn-block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* Navbar */
.nav{
  position:fixed;inset:0 0 auto 0;height:var(--header-h);z-index:50;
  display:flex;align-items:center;
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  background:rgba(248,250,252,.72);
  border-bottom:1px solid var(--border);
  transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.nav.on-dark{
  background:rgba(15,23,42,.6);
  border-bottom-color:var(--border-dark);
  color:var(--text-light);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;}
.nav-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.05rem}
.nav-brand .dot{width:10px;height:10px;border-radius:50%;background:var(--accent-primary);box-shadow:0 0 12px var(--accent-glow)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-weight:500;font-size:.95rem;color:inherit;opacity:.85;transition:opacity .2s,color .2s}
.nav-links a:hover,.nav-links a[aria-current="page"]{opacity:1;color:var(--accent-primary)}
.nav.on-dark .nav-links a:hover,.nav.on-dark .nav-links a[aria-current="page"]{color:var(--accent-secondary)}
.nav-cta{padding:8px 16px;border-radius:999px;background:var(--accent-primary);color:#fff !important;opacity:1 !important}
.nav-cta:hover{background:var(--accent-hover)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;border:1px solid var(--border)}
.nav.on-dark .nav-toggle{border-color:var(--border-dark)}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;background:currentColor;position:relative;transition:transform .2s;
}
.nav-toggle span::before{position:absolute;top:-6px}
.nav-toggle span::after{position:absolute;top:6px}

@media (max-width:820px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:var(--header-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--card-bg);border-bottom:1px solid var(--border);
    padding:8px 0;transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .2s,transform .2s;
  }
  .nav-links a{padding:14px 24px;border-bottom:1px solid var(--border)}
  .nav-cta{margin:12px 24px;text-align:center}
  .nav.is-open .nav-links{transform:none;opacity:1;pointer-events:auto}
}

/* Cards */
.card{
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(79,70,229,.25)}
.card-media{
  aspect-ratio:16/9;background:linear-gradient(135deg,#eef2ff,#e0f2fe);
  border-radius:var(--radius-sm);margin:-8px -8px 18px;overflow:hidden;display:flex;align-items:center;justify-content:center;
  color:var(--accent-primary);font-family:var(--font-display);font-size:2rem;font-weight:700;
}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-title{font-family:var(--font-display);font-size:1.15rem;font-weight:700;color:var(--text-dark);margin-bottom:8px}
.card-meta{font-size:.82rem;color:var(--text-muted);margin-bottom:10px}
.card-desc{font-size:.94rem;color:var(--text-muted)}
.card-actions{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.tag{font-size:.72rem;font-weight:600;background:rgba(79,70,229,.08);color:var(--accent-primary);padding:4px 10px;border-radius:999px}
.badge-featured{position:absolute;top:14px;right:14px;background:var(--accent-primary);color:#fff;font-size:.7rem;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.05em}

/* Forms */
.field{display:block;margin-bottom:18px}
.field label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px;color:var(--text-dark)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:#fff;color:var(--text-dark);transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 4px rgba(79,70,229,.12);
}
.field .error{display:block;font-size:.8rem;color:var(--danger);margin-top:6px;min-height:1em}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:var(--danger);box-shadow:0 0 0 4px rgba(239,68,68,.1)}
.field textarea{min-height:140px;resize:vertical}

/* Footer */
.footer{background:var(--bg-dark);color:var(--text-light);padding:48px 0;margin-top:64px}
.footer .footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
.footer a{color:var(--text-light);opacity:.7;transition:opacity .2s}
.footer a:hover{opacity:1;color:var(--accent-secondary)}
.social-row{display:flex;gap:14px}
.social-row a{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.06)}

/* Toast */
.toast-host{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:10px;z-index:100;max-width:360px}
.toast{
  background:#0f172a;color:#fff;padding:14px 16px;border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg);border-left:4px solid var(--accent-primary);
  animation:toast-in .25s var(--ease);font-size:.92rem;
}
.toast.success{border-left-color:var(--success)}
.toast.error{border-left-color:var(--danger)}
@keyframes toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Empty / loading */
.empty{text-align:center;padding:64px 20px;color:var(--text-muted);border:1px dashed var(--border);border-radius:var(--radius)}
.skeleton{background:linear-gradient(90deg,#f1f5f9,#e2e8f0,#f1f5f9);background-size:200% 100%;animation:sk 1.2s infinite;border-radius:var(--radius-sm)}
.skeleton-card{height:280px;border-radius:var(--radius)}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.55);display:none;align-items:center;justify-content:center;z-index:80;padding:20px;backdrop-filter:blur(4px)}
.modal-backdrop.open{display:flex;animation:fade-in .2s var(--ease)}
.modal{background:#fff;border-radius:var(--radius-lg);padding:28px;max-width:560px;width:100%;max-height:90vh;overflow:auto;box-shadow:var(--shadow-lg)}
.modal h3{margin-bottom:18px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}

@keyframes fade-in{from{opacity:0}to{opacity:1}}