/* Header */
.header{position:fixed;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:var(--max-w);height:var(--header-h);background:var(--header-bg);display:flex;align-items:center;justify-content:space-between;padding:0 12px;z-index:100;border-bottom:1px solid var(--border);backdrop-filter:var(--glass-filter);-webkit-backdrop-filter:var(--glass-filter)}
.header .left,.header .right{display:flex;align-items:center;gap:8px}
.header .menu-btn{font-size:20px;color:#fff;padding:6px;transition:color 0.2s;background:rgba(255,255,255,0.07);border:1px solid rgba(255,255,255,0.12);border-radius:8px;width:36px;height:36px;display:flex;align-items:center;justify-content:center}
.header .menu-btn:hover{color:var(--accent)}
.header .logo{font-family:'Georgia',serif;font-weight:900;font-style:italic;font-size:24px;background:var(--logo-gold);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:1px;text-shadow:0 0 20px rgba(240,192,48,0.4)}
.header .logo-img{height:36px;max-width:140px;object-fit:contain;display:block}
.header .balance{display:flex;align-items:center;gap:4px;font-size:13px;color:var(--accent);font-weight:800;background:rgba(255,255,255,0.07);padding:6px 10px;border-radius:8px;border:1px solid rgba(255,255,255,0.12);cursor:pointer}
.header .icon-btn{font-size:18px;padding:6px;color:var(--text);border-radius:8px;background:var(--card-2);border:1px solid var(--border);transition:all 0.2s}
.header .icon-btn:hover{background:var(--card);color:var(--accent);border-color:var(--border-glow)}

/* 3D header buttons */
.btn-login{padding:7px 16px;border-radius:6px;font-size:13px;font-weight:700;cursor:pointer;border:none;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;transition:all 0.15s;background:var(--btn-gradient);color:#fff;box-shadow:0 4px 0 #064028,0 4px 8px rgba(0,0,0,0.4);border-bottom:2px solid #1dcc85}
.btn-login:active{transform:translateY(3px);box-shadow:0 1px 0 #064028,0 1px 4px rgba(0,0,0,0.4)}
.btn-register{padding:7px 16px;border-radius:6px;font-size:13px;font-weight:700;cursor:pointer;border:none;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;transition:all 0.15s;background:var(--gold-gradient);color:#3a2500;box-shadow:0 4px 0 #8a6a00,0 4px 8px rgba(0,0,0,0.4);border-bottom:2px solid #ffe57a}
.btn-register:active{transform:translateY(3px);box-shadow:0 1px 0 #8a6a00,0 1px 4px rgba(0,0,0,0.4)}

/* Bottom Nav */
.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:var(--max-w);height:var(--bottomnav-h);background:var(--bottomnav-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--border);display:flex;justify-content:space-around;align-items:stretch;z-index:100}
.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--text-muted);font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:0.3px;padding:6px 0;position:relative;transition:all 0.2s}
.bottom-nav a:hover{color:var(--text)}
.bottom-nav a.active{color:var(--accent)}
.bottom-nav a .ico{width:22px;height:22px;display:flex;align-items:center;justify-content:center}
.bottom-nav a .ico svg{width:100%;height:100%}
.bottom-nav a.active .ico svg{filter:drop-shadow(0 0 6px rgba(240,192,48,0.6))}
.bottom-nav a:active{opacity:0.7;transform:scale(0.9)}
.bottom-nav a.center{color:var(--text-muted);margin-top:-16px}
.bottom-nav a.center .ico{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--teal-light) 0%,var(--teal) 100%);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 3px rgba(7,20,14,0.97),0 0 0 4px var(--teal),0 4px 16px rgba(13,163,110,0.5);border:none}
.bottom-nav a.center .ico svg{width:24px;height:24px}
.bottom-nav a.center:active .ico{transform:scale(0.92)}
.bottom-nav a.center.active{color:var(--accent)}

/* Sidebar */
.sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.7);backdrop-filter:blur(4px);z-index:90;display:none;opacity:0;transition:opacity 0.3s;top:var(--header-h)}
.sidebar-overlay.open{display:block;opacity:1}
.sidebar{position:fixed;top:var(--header-h);left:50%;transform:translateX(calc(-50% - var(--max-w)/2 - 100%));width:75%;max-width:300px;height:calc(100vh - var(--header-h));background:var(--sidebar-bg);z-index:91;transition:all .4s cubic-bezier(0.4, 0, 0.2, 1);overflow-y:auto;padding:16px;border-right:1px solid var(--border);box-shadow:var(--shadow);opacity:0;visibility:hidden}
.sidebar.open{transform:translateX(calc(-50% - var(--max-w)/2));opacity:1;visibility:visible}
@media(max-width:480px){
  .sidebar{transform:translateX(-100%);left:0}
  .sidebar.open{transform:translateX(0)}
}
.sidebar .cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.sidebar .cat{background:var(--card);border-radius:var(--radius-sm);padding:16px 8px;text-align:center;font-size:13px;font-weight:600;cursor:pointer;border:1px solid var(--border);transition:all 0.2s}
.sidebar .cat:hover{border-color:var(--border-glow);background:var(--card-2)}
.sidebar .cat.active{background:var(--teal);color:#fff;border-color:var(--teal-light);box-shadow:0 4px 12px rgba(13,122,85,0.4)}
.sidebar .cat .ico{font-size:24px;display:block;margin-bottom:6px}
.sidebar .menu-item{display:flex;align-items:center;gap:12px;padding:14px;background:var(--card);border-radius:var(--radius-sm);margin-bottom:8px;font-size:14px;font-weight:500;border:1px solid transparent;transition:all 0.2s}
.sidebar .menu-item:hover{background:var(--card-2);border-color:var(--border)}
.sidebar .highlight-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}
.sidebar .hi{padding:16px;border-radius:var(--radius-sm);font-weight:700;font-size:14px;color:#fff;display:flex;align-items:center;justify-content:space-between;transition:transform 0.2s;box-shadow:0 4px 10px rgba(0,0,0,0.2)}
.sidebar .hi:hover{transform:translateY(-2px);box-shadow:0 6px 15px rgba(0,0,0,0.3)}
.sidebar .hi.full{grid-column:span 2}
.sidebar .selector{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--card);border-radius:var(--radius-sm);margin-bottom:8px;font-size:14px;border:1px solid var(--border)}

/* Sub-page header (back arrow) */
.subheader{position:fixed;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:var(--max-w);height:var(--header-h);background:var(--header-bg);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 16px;z-index:100;border-bottom:1px solid var(--border);backdrop-filter:var(--glass-filter);-webkit-backdrop-filter:var(--glass-filter)}
.subheader .title{position:absolute;left:50%;transform:translateX(-50%);font-weight:700;font-size:17px;letter-spacing:0.5px}
.subheader .back{font-size:24px;cursor:pointer;padding:8px;transition:color 0.2s}
.subheader .back:hover{color:var(--accent)}
.subheader .actions{display:flex;gap:12px;font-size:20px}