:root{--neon:#39ff14;--bg:#000}
*{box-sizing:border-box;font-family:Inter,Segoe UI,Arial,Helvetica,sans-serif}
:root{--card-bg:#0f172a;--card-radius:12px;--text:#f1f5f9;--muted:rgba(241,245,249,0.75);--accent:#6dfc9b}
body{background:linear-gradient(180deg,#07102a,#000);color:var(--text);margin:0;padding:20px}
.container{max-width:1100px;margin:0 auto}

/* Sidenav */
.sidenav{width:200px;float:left;margin-right:18px}
.sidenav-inner{background:transparent;color:var(--muted);padding:12px}
.sidenav h4{color:#fff;margin:0 0 8px}
.sidenav ul{list-style:none;padding:0;margin:0}
.sidenav li{margin:8px 0}
.sidenav a{color:var(--muted);text-decoration:none;padding:6px 8px;display:block;border-radius:6px}
.sidenav a:hover{background:rgba(255,255,255,0.02);color:#fff}

/* User Profile in Sidenav */
.user-profile{padding:12px;background:linear-gradient(135deg,rgba(16,185,129,0.1),rgba(16,185,129,0.05));border-radius:10px;border:1px solid rgba(16,185,129,0.2);margin-bottom:16px}
.user-name{margin:0 0 10px;font-size:15px;font-weight:700;color:#fff}
.user-balance{display:flex;align-items:center;gap:8px;padding:8px 10px;background:rgba(0,0,0,0.3);border-radius:8px;border:1px solid rgba(16,185,129,0.15)}
.balance-label{font-size:16px}
.balance-amount{font-size:16px;font-weight:800;color:#10b981;letter-spacing:0.3px}

/* ensure main content accounts for sidenav */
.container:after{content:'';display:block;clear:both}

/* Header */
.app-header{display:flex;align-items:flex-start;padding:18px 8px;margin-bottom:18px}
.header-left{flex:1}
.app-title{font-size:28px;margin:0;color:#fff;font-weight:800;letter-spacing:0.2px}
.app-sub{margin:6px 0 0;color:var(--muted);font-size:14px}

/* Layout grid for HUD */
.hud-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch;margin-bottom:24px}

/* Cards */
.card{background:linear-gradient(145deg,rgba(15,23,42,0.95),rgba(8,12,28,0.9));padding:20px;border-radius:14px;color:var(--text);box-shadow:0 8px 24px rgba(2,6,23,0.8),0 0 0 1px rgba(255,255,255,0.03);display:flex;flex-direction:column;align-items:center;text-align:center;border:1px solid rgba(109,252,155,0.1);transition:all 0.3s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(2,6,23,0.9),0 0 0 1px rgba(109,252,155,0.2);border-color:rgba(109,252,155,0.2)}
.card .card-title{font-weight:800;margin-bottom:12px;font-size:16px;letter-spacing:0.5px}
.card-car{align-items:stretch;text-align:center}
.card-action{min-height:180px;justify-content:center}
.card-heading{margin:0 0 8px;font-size:20px;font-weight:800;letter-spacing:0.3px}
.card-desc{margin:0 0 16px;color:var(--muted);font-size:13px;line-height:1.5}
.card-status{margin-bottom:12px;color:var(--accent);font-weight:600;font-size:14px}

/* Select / buttons */
.select-styled{width:100%;padding:10px;border-radius:8px;border:1px solid rgba(255,255,255,0.06);background:transparent;color:var(--text);outline:none}
.btn-primary{margin-top:0;padding:12px 18px;border-radius:10px;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;cursor:pointer;font-weight:800;font-size:15px;text-transform:uppercase;letter-spacing:0.5px;box-shadow:0 4px 12px rgba(16,185,129,0.3);transition:all 0.2s ease;width:100%}
.btn-primary:hover{opacity:1;transform:translateY(-2px);box-shadow:0 6px 16px rgba(16,185,129,0.4)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{padding:10px 14px;border-radius:8px;background:transparent;border:1px solid rgba(109,252,155,0.2);color:var(--accent);cursor:pointer;font-weight:600;transition:all 0.2s ease}

/* Responsividade para telas pequenas */
@media (max-width: 768px) {
  .hud-grid{grid-template-columns:1fr;gap:12px}
  .sidenav{width:100%;float:none;margin-right:0;margin-bottom:16px}
  .modal,.modal-card,.shop-modal .modal-card{max-width:95vw;max-height:90vh;overflow-y:auto;margin:10px}
  .card{padding:14px}
  .app-title{font-size:22px}
  body{padding:10px}
}
@media (max-width: 480px) {
  .card{padding:12px}
  .btn-primary{font-size:13px;padding:10px 14px}
  .app-title{font-size:20px}
}
.btn-ghost:hover{background:rgba(109,252,155,0.05);border-color:rgba(109,252,155,0.3)}

/* Race & track */
.race-area{margin-top:24px;padding:20px;background:linear-gradient(145deg,rgba(5,8,20,0.6),rgba(2,4,12,0.8));border-radius:16px;border:1px solid rgba(109,252,155,0.1);box-shadow:0 8px 24px rgba(0,0,0,0.6)}
.track{position:relative;height:220px;background:linear-gradient(180deg,#030310,#050515);border-radius:12px;border:2px solid rgba(16,185,129,0.2);overflow:hidden;box-shadow:inset 0 2px 8px rgba(0,0,0,0.8)}
/* center divider between lanes */
.track .divider{position:absolute;left:0;right:0;top:50%;height:3px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.15) 50%,transparent);transform:translateY(-50%)}
/* finish line at 98% */
.track::after{content:'';position:absolute;right:2%;top:0;bottom:0;width:4px;background:repeating-linear-gradient(0deg,#fff 0,#fff 8px,#000 8px,#000 16px);opacity:0.6}

/* procedural scenery behind the track to convey motion */
.race-area .scenery{position:relative;height:90px;margin-bottom:12px;overflow:hidden;background:linear-gradient(180deg,rgba(5,20,10,0.3),transparent)}
.race-area .scenery .tree{position:absolute;bottom:0;width:0;height:0;border-left:12px solid transparent;border-right:12px solid transparent;border-bottom:32px solid #059669;border-radius:3px;opacity:0.85;transform-origin:center bottom;filter:blur(0.3px)}
.race-area .scenery .tree .trunk{position:absolute;left:50%;transform:translateX(-50%);bottom:-10px;width:8px;height:14px;background:#3d2817;border-radius:3px}
.car{position:absolute;bottom:20px;width:180px;height:72px;background:linear-gradient(135deg,#1e3a8a,#3b82f6) center/cover no-repeat;border:none;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.4);transition:all 0.1s linear;image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges;-webkit-filter:blur(0);filter:blur(0);-webkit-backface-visibility:hidden;backface-visibility:hidden;-webkit-transform:translateZ(0);transform:translateZ(0);overflow:hidden}
.car img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;border-radius:8px;z-index:1;background:#000}
.car:has(img){background:transparent}
.car-player{left:20px}
.car-opp{left:20px;top:12px;background:linear-gradient(135deg,#dc2626,#ef4444) center/cover no-repeat;transform:scale(0.98);display:none}

.meter{display:flex;gap:16px;align-items:center;margin-top:18px;padding:16px;background:rgba(5,8,20,0.5);border-radius:12px;border:1px solid rgba(109,252,155,0.08)}

/* RPM bar with zones behind and dynamic fill */
.rpm-bar{position:relative;width:70%;height:24px;border-radius:12px;overflow:hidden;background:#0b1220;border:2px solid rgba(16,185,129,0.2);box-shadow:inset 0 2px 6px rgba(0,0,0,0.6)}
.rpm-zones{position:absolute;inset:0;opacity:0.15;background:linear-gradient(90deg,#0b61ff 0 85%,#facc15 85% 92%,#10b981 92% 97%,#ef4444 97% 100%)}
.rpm-fill{position:absolute;left:0;top:0;height:100%;width:0%;background:linear-gradient(90deg,rgba(59,130,246,0.4),rgba(16,185,129,0.3));transition:width 0.05s linear;box-shadow:0 0 8px rgba(16,185,129,0.4)}
.rpm-bar.zone-green .rpm-fill{background:linear-gradient(90deg,rgba(16,185,129,0.5),rgba(109,252,155,0.4));box-shadow:0 0 12px rgba(16,185,129,0.6)}
.rpm-bar.zone-red .rpm-fill{background:linear-gradient(90deg,rgba(239,68,68,0.5),rgba(255,120,120,0.4));box-shadow:0 0 12px rgba(239,68,68,0.6)}
.rpm-bar.zone-yellow .rpm-fill{background:linear-gradient(90deg,rgba(250,204,21,0.5),rgba(255,240,150,0.4));box-shadow:0 0 12px rgba(250,204,21,0.6)}

/* Speed bar */
.speed-wrap{width:30%;display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.speed-bar{position:relative;width:100%;height:14px;background:#071227;border-radius:10px;overflow:hidden;border:2px solid rgba(16,185,129,0.2);box-shadow:inset 0 2px 6px rgba(0,0,0,0.6)}
.speed-fill{position:absolute;left:0;top:0;height:100%;width:0;background:linear-gradient(90deg,#3b82f6,#10b981);transition:width 0.1s linear;box-shadow:0 0 8px rgba(16,185,129,0.4)}
.speed-val{font-weight:800;font-size:18px;color:#10b981;text-shadow:0 0 8px rgba(16,185,129,0.4);letter-spacing:0.5px}

.gear-badge{min-width:52px;padding:8px 12px;border-radius:10px;background:linear-gradient(145deg,#071227,#0a1832);color:#10b981;border:2px solid rgba(16,185,129,0.3);text-align:center;font-weight:800;font-size:20px;box-shadow:0 4px 12px rgba(0,0,0,0.6),inset 0 1px 2px rgba(255,255,255,0.05);transition:all 0.15s ease}
.gear-badge.gear-shift-anim{transform:scale(1.25)}
.gear-badge.shift-perfect{color:#6dfc9b;border-color:rgba(109,252,155,0.8);box-shadow:0 0 20px rgba(16,185,129,0.6),0 4px 12px rgba(0,0,0,0.6),inset 0 1px 2px rgba(255,255,255,0.05)}
.gear-badge.shift-good{color:#facc15;border-color:rgba(250,204,21,0.8);box-shadow:0 0 20px rgba(250,204,21,0.6),0 4px 12px rgba(0,0,0,0.6),inset 0 1px 2px rgba(255,255,255,0.05)}
.gear-badge.shift-early{color:#fb923c;border-color:rgba(251,146,60,0.8);box-shadow:0 0 20px rgba(251,146,60,0.6),0 4px 12px rgba(0,0,0,0.6),inset 0 1px 2px rgba(255,255,255,0.05)}
.gear-badge.shift-late{color:#ef4444;border-color:rgba(239,68,68,0.8);box-shadow:0 0 20px rgba(239,68,68,0.6),0 4px 12px rgba(0,0,0,0.6),inset 0 1px 2px rgba(255,255,255,0.05)}

.hidden{display:none}
.results{margin-top:12px;padding:12px;background:#071229;border:1px solid rgba(255,255,255,0.02);border-radius:10px}
.links{margin-top:12px;color:rgba(255,255,255,0.6)}

/* Shop cards and modal */
.shop-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:12px}
.shop-card{background:linear-gradient(180deg,rgba(8,18,36,0.9),rgba(6,10,20,0.85));border-radius:12px;padding:14px;box-shadow:0 8px 24px rgba(2,6,23,0.6);display:flex;flex-direction:column;gap:10px;transition:all 0.3s ease;border:1px solid rgba(109,252,155,0.1)}
.shop-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(2,6,23,0.8);border-color:rgba(109,252,155,0.3)}
.shop-thumb{height:120px;border-radius:8px;background:linear-gradient(90deg,#0b1228,#051025);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.06);font-size:12px;border:1px solid rgba(255,255,255,0.02)}
.shop-thumb img{max-width:100%;max-height:100%;border-radius:6px;object-fit:cover}
.shop-title{font-weight:800;font-size:16px;margin:6px 0 0}
.shop-stats{color:var(--muted);font-size:13px;margin:6px 0}
.shop-footer{display:flex;justify-content:space-between;align-items:center;margin-top:6px}
.price{font-weight:800;color:#a78bfa}
.btn-buy{background:linear-gradient(90deg,#7c3aed,#4f46e5);border:none;color:white;padding:8px 12px;border-radius:10px;cursor:pointer;font-weight:700}
.btn-buy:hover{opacity:0.95;transform:translateY(-2px)}

/* Modal */
.shop-modal{position:fixed;inset:0;background:rgba(3,6,13,0.7);display:flex;align-items:center;justify-content:center;z-index:9999}
.shop-modal .modal-card{background:linear-gradient(180deg,#071431,#021026);padding:18px;border-radius:12px;width:min(820px,96%);box-shadow:0 12px 36px rgba(2,6,23,0.7);color:var(--text)}
.shop-modal .modal-header{display:flex;justify-content:space-between;align-items:center}
.shop-modal .modal-body{margin-top:12px}
.shop-modal .modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}
.shop-modal .btn-cancel{background:transparent;border:1px solid rgba(255,255,255,0.06);padding:8px 12px;border-radius:8px;color:var(--muted);cursor:pointer}
.shop-modal .btn-confirm{background:linear-gradient(90deg,#10b981,#059669);border:none;color:white;padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:700}

/* Car Selection Grid */
.car-selection-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;padding:4px}
.car-card{background:linear-gradient(145deg,rgba(15,23,42,0.8),rgba(8,12,28,0.9));border:2px solid rgba(109,252,155,0.2);border-radius:12px;padding:16px;cursor:pointer;transition:all 0.3s ease}
.car-card:hover{transform:translateY(-4px);border-color:rgba(109,252,155,0.5);box-shadow:0 8px 24px rgba(16,185,129,0.3)}
.car-card-header h4{margin:0 0 12px;font-size:18px;color:#10b981;font-weight:800}
.car-card-stats{display:flex;flex-direction:column;gap:8px}
.car-card-stats .stat-item{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid rgba(255,255,255,0.05)}
.car-card-stats .stat-item:last-child{border-bottom:none}
.car-card-stats .stat-label{color:var(--muted);font-size:13px}
.car-card-stats .stat-value{color:var(--text);font-weight:600;font-size:14px}

/* Result Modal */
.result-modal{position:fixed;inset:0;background:rgba(3,6,13,0.85);display:flex;align-items:center;justify-content:center;z-index:10000;animation:fadeIn 0.3s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.result-modal .result-card{background:linear-gradient(180deg,#071431,#021026);padding:32px;border-radius:16px;width:min(480px,92%);box-shadow:0 20px 60px rgba(2,6,23,0.9);color:var(--text);text-align:center;animation:slideUp 0.4s ease}
@keyframes slideUp{from{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}
.result-modal .result-icon{font-size:64px;margin-bottom:16px;animation:bounce 0.6s ease}
@keyframes bounce{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.result-modal .result-title{font-size:32px;font-weight:800;margin:0 0 12px;text-transform:uppercase;letter-spacing:1px}
#rpmBar.glow-green{box-shadow:0 0 20px rgba(16,185,129,0.8),0 0 40px rgba(16,185,129,0.4);transition:box-shadow 0.1s ease}
#rpmBar.glow-red{box-shadow:0 0 20px rgba(239,68,68,0.8),0 0 40px rgba(239,68,68,0.4);transition:box-shadow 0.1s ease}
.result-modal .result-title.win{background:linear-gradient(90deg,#10b981,#059669);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.result-modal .result-title.lose{background:linear-gradient(90deg,#ef4444,#dc2626);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.result-modal .result-title.draw{background:linear-gradient(90deg,#f59e0b,#d97706);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.result-modal .result-stats{margin:20px 0;padding:20px;background:rgba(255,255,255,0.02);border-radius:12px;border:1px solid rgba(255,255,255,0.03)}
.result-modal .stat-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid rgba(255,255,255,0.03)}
.result-modal .stat-row:last-child{border-bottom:none}
.result-modal .stat-label{color:var(--muted);font-size:14px}
.result-modal .stat-value{font-weight:700;font-size:16px}
.result-modal .reward-highlight{font-size:24px;font-weight:800;margin:16px 0;padding:16px;background:linear-gradient(90deg,rgba(16,185,129,0.1),rgba(109,252,155,0.05));border-radius:12px;border:1px solid rgba(16,185,129,0.2)}
.result-modal .reward-highlight.negative{background:linear-gradient(90deg,rgba(239,68,68,0.1),rgba(255,120,120,0.05));border-color:rgba(239,68,68,0.2)}
.result-modal .btn-close{background:linear-gradient(90deg,#3b82f6,#2563eb);border:none;color:white;padding:12px 24px;border-radius:10px;cursor:pointer;font-weight:700;font-size:16px;margin-top:16px;width:100%}
.result-modal .btn-close:hover{opacity:0.95;transform:translateY(-2px)}