:root{
  --primary:#4F46E5;--primary-dark:#3730A3;--primary-light:#EEF2FF;
  --amber:#F59E0B;--amber-light:#FEF3C7;
  --green:#10B981;--green-light:#D1FAE5;
  --red:#EF4444;--red-light:#FEE2E2;
  --blue:#3B82F6;--blue-light:#DBEAFE;
  --purple:#8B5CF6;--purple-light:#EDE9FE;
  --pink:#EC4899;--pink-light:#FCE7F3;
  --bg:#F8FAFC;--surface:#FFFFFF;
  --text:#1E293B;--text-muted:#64748B;--text-light:#94A3B8;
  --border:#E2E8F0;
  --shadow:0 1px 3px rgba(0,0,0,.1);
  --shadow-md:0 4px 6px rgba(0,0,0,.07);
  --shadow-lg:0 10px 15px rgba(0,0,0,.1);
  --radius:12px;--radius-sm:8px;--radius-lg:20px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}
.hidden{display:none!important}
/* NAVIGATION */
nav{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow)}
.nav-inner{max-width:1200px;margin:auto;padding:0 24px;display:flex;align-items:center;height:64px;gap:8px}
.logo{font-size:1.3rem;font-weight:800;color:var(--primary);margin-right:auto;display:flex;align-items:center;gap:8px;cursor:pointer}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--purple));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem}
.nav-link{padding:8px 14px;border-radius:var(--radius-sm);color:var(--text-muted);font-size:.9rem;font-weight:500;cursor:pointer;transition:.15s}
.nav-link:hover,.nav-link.active{background:var(--primary-light);color:var(--primary)}
/* BUTTONS */
.btn{padding:9px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;border:none;transition:.15s;display:inline-flex;align-items:center;gap:6px;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}
.btn-green{background:var(--green);color:#fff}.btn-green:hover{background:#059669}
.btn-amber{background:var(--amber);color:#fff}.btn-amber:hover{background:#D97706}
.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg);color:var(--text)}
.btn-danger{background:var(--red);color:#fff}
.btn-lg{padding:13px 28px;font-size:1rem;border-radius:var(--radius)}
.btn-sm{padding:6px 14px;font-size:.8rem}
.btn-block{width:100%;justify-content:center}
/* CARDS */
.card{background:var(--surface);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.card h3{font-size:1rem;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
/* FORM */
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--text-muted)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:.95rem;font-family:inherit;background:var(--bg);transition:.15s}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);background:var(--surface)}
.form-error{color:var(--red);font-size:.82rem;margin-top:4px}
.form-success{color:var(--green);font-size:.82rem;margin-top:4px}
/* PROGRESS */
.progress-bar{height:8px;background:var(--border);border-radius:4px}
.progress-fill{height:100%;border-radius:4px;transition:.5s}
/* TOAST */
.toast{position:fixed;bottom:24px;right:24px;padding:12px 20px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;z-index:9999;transform:translateY(80px);opacity:0;transition:.3s;max-width:320px;box-shadow:var(--shadow-lg)}
.toast.show{transform:translateY(0);opacity:1}
.toast-success{background:#065F46;color:#fff;border-left:4px solid #10B981}
.toast-error{background:#991B1B;color:#fff;border-left:4px solid #EF4444}
.toast-info{background:#1E3A5F;color:#fff;border-left:4px solid #3B82F6}
/* LOADING */
.spinner{width:24px;height:24px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-page{display:flex;align-items:center;justify-content:center;min-height:300px}
/* BADGE */
.badge-item{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;position:relative;cursor:pointer;transition:.15s}
.badge-item:hover{transform:scale(1.1)}
.badge-item.locked{filter:grayscale(1);opacity:.4}
/* MISC */
.stat-val{font-size:1.8rem;font-weight:800}
.stat-lbl{font-size:.78rem;color:var(--text-muted)}
.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:.75rem;font-weight:600}
.tag-green{background:var(--green-light);color:#065F46}
.tag-amber{background:var(--amber-light);color:#92400E}
.tag-red{background:var(--red-light);color:#991B1B}
.tag-blue{background:var(--blue-light);color:#1E40AF}
.callout{background:var(--amber-light);border-left:4px solid var(--amber);padding:14px 18px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:16px 0;font-weight:500;font-size:.95rem}
/* GRID HELPERS */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}