:root{
  /* Light Mode Colors - Default */
  --bg-primary:#ffffff;
  --bg-secondary:#f6f8fb;
  --bg-tertiary:#f0f2f5;
  --text-primary:#333333;
  --text-secondary:#666666;
  --text-muted:#999999;
  --card-bg:#ffffff;
  --card-border:#e6e6e6;
  --border-color:#ddd;
  --input-bg:#ffffff;
  --input-border:#e6e6e6;
  --overlay-bg:rgba(0,0,0,0.6);
  
  /* Primary Colors */
  --blue:#0066ff;
  --blue-dark:#0052cc;
  --blue-light:#e6f2ff;
  --success:#52c41a;
  --warning:#faad14;
  --danger:#ff4d4f;
  --light:#f6f8fb;
  --gray:#888;
  --gray-light:#ddd;
  
  /* Shadows */
  --shadow-sm:0 2px 8px rgba(0,102,255,0.08);
  --shadow-md:0 6px 16px rgba(0,102,255,0.12);
  --shadow-lg:0 12px 28px rgba(0,102,255,0.15);
  --radius:16px;
  
  /* Transitions */
  --transition:all 0.3s ease;
}

/* Dark Mode Theme */
[data-theme="dark"],
body.dark-theme {
  --bg-primary:#1a1a1a;
  --bg-secondary:#252525;
  --bg-tertiary:#333333;
  --text-primary:#f5f5f5;
  --text-secondary:#cccccc;
  --text-muted:#999999;
  --card-bg:#2a2a2a;
  --card-border:#444444;
  --border-color:#444444;
  --input-bg:#2a2a2a;
  --input-border:#444444;
  --overlay-bg:rgba(0,0,0,0.8);
}

*{box-sizing:border-box;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;transition:var(--transition)}
html{scroll-behavior:smooth;font-size:16px}
body{margin:0;background:var(--bg-secondary);color:var(--text-primary);padding-bottom:80px;animation:fadeIn 0.3s ease;line-height:1.5}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.header{display:flex;justify-content:space-between;align-items:center;padding:12px 12px;border-bottom:none;background:var(--bg-primary);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100;min-height:56px}
.sticky{position:sticky;top:0;z-index:100}
.title{font-weight:800;font-size:clamp(18px,5vw,24px);background:linear-gradient(135deg,var(--blue),var(--blue-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;cursor:pointer;user-select:none;white-space:nowrap}
.title:hover{opacity:0.8}
.logo{height:28px;vertical-align:middle;display:inline-block}
@media(min-width:900px){.logo{height:32px}}
.header a{color:var(--blue);text-decoration:none;font-size:clamp(16px,4vw,20px);transition:var(--transition);min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}
.header a:hover{transform:scale(1.1) rotate(5deg);color:var(--blue-dark)}
.header .icon{cursor:pointer;transition:transform 0.2s;padding:8px}
.header .icon:hover{transform:rotate(20deg)}
.container{padding:12px;max-width:100%}
.search-wrap{margin-bottom:12px}
.search{display:flex;align-items:center;background:var(--bg-primary);padding:clamp(8px,2vw,12px) clamp(12px,3vw,16px);border-radius:30px;box-shadow:var(--shadow-sm);transition:var(--transition);min-height:44px;border:2px solid var(--input-border)}
.search:focus-within{box-shadow:var(--shadow-md);background:var(--bg-primary)}
.search i{color:var(--blue);margin-right:10px;font-size:14px;transition:var(--transition);flex-shrink:0}
.search:focus-within i{color:var(--blue-dark);font-size:16px}
.search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text-primary);min-height:28px}
.search input::placeholder{color:var(--text-muted)}
.carousel{margin-bottom:16px;position:relative;overflow:visible}
.slides{display:flex;overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow-md);transition:transform 0.6s cubic-bezier(.22,.9,.31,1);will-change:transform;height:clamp(160px,45vw,320px);width:100%}
.slide{flex:0 0 100%;position:relative;height:100%;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);overflow:hidden}
.slide img{width:100%;height:100%;display:block;object-fit:contain;filter:contrast(1.02) saturate(1.02)}
.overlay{position:absolute;left:clamp(10px,3vw,16px);bottom:clamp(10px,3vw,16px);background:var(--overlay-bg);color:var(--text-primary);padding:clamp(10px,2vw,14px) clamp(12px,3vw,16px);border-radius:12px;font-weight:700;font-size:clamp(13px,3vw,15px);backdrop-filter:blur(6px);animation:slideUp 0.36s ease;max-width:86%}

/* Carousel controls (prev/next) */
.carousel-control{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:rgba(0,0,0,0.45);color:#fff;border:0;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:100;box-shadow:var(--shadow-md);transition:var(--transition);pointer-events:auto}
.carousel-control i{font-size:18px}
.carousel-control.prev{left:12px}
.carousel-control.next{right:12px}
.carousel-control:focus{outline:2px solid var(--blue);outline-offset:2px}
.carousel-control:hover{background:rgba(0,0,0,0.6);transform:translateY(-50%) scale(1.03)}

/* Indicators */
.carousel-indicators{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:22}
.carousel-indicators button{height:8px;border-radius:999px;border:0;background:rgba(255,255,255,0.6);cursor:pointer;transition:var(--transition);padding:0}
.carousel-indicators button[aria-current="true"]{width:36px;background:var(--blue);border-radius:20px}
.carousel-indicators button:not([aria-current="true"]){width:8px}
.carousel-indicators button:focus{outline:2px solid var(--blue);outline-offset:2px}

/* Touch affordance */
.carousel .slide{touch-action:pan-y}

@keyframes slideUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.actions{display:flex;gap:clamp(8px,2vw,12px);margin:clamp(14px,3vw,20px) 0;flex-wrap:wrap}
.btn{flex:1;padding:clamp(12px,2vw,16px) clamp(12px,2vw,16px);border-radius:12px;border:0;font-weight:700;cursor:pointer;transition:var(--transition);font-size:clamp(13px,3vw,15px);user-select:none;min-height:44px;display:flex;align-items:center;justify-content:center;text-align:center;min-width:120px;touch-action:manipulation}
.btn.primary{background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;box-shadow:var(--shadow-md);position:relative;overflow:hidden}
.btn.primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn.primary:active{transform:translateY(0)}
.btn.light{background:var(--bg-primary);color:var(--blue);border:2px solid var(--blue-light);font-weight:600;transition:var(--transition)}
.btn.light:hover{background:var(--blue-light);border-color:var(--blue)}
.categories{margin-top:14px}
.categories h3{margin:0 0 12px 0;font-size:clamp(14px,3vw,16px);font-weight:700;color:var(--text-primary)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(clamp(70px,20vw,100px),1fr));gap:clamp(8px,2vw,12px)}
.card{background:var(--card-bg);border-radius:14px;padding:clamp(10px,2vw,14px);display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);cursor:pointer;transition:var(--transition);border:2px solid transparent;user-select:none;min-height:90px;touch-action:manipulation;color:var(--text-primary)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--blue-light);background:var(--bg-tertiary)}
.card img{width:clamp(40px,8vw,52px);height:clamp(40px,8vw,52px);margin-bottom:clamp(6px,1vw,10px);transition:transform 0.3s}
.card:hover img{transform:scale(1.1)}
.card div{font-size:clamp(11px,2.5vw,13px);font-weight:600;text-align:center;color:var(--text-primary);transition:color 0.3s;word-break:break-word}
.card:hover div{color:var(--blue)}
.bottom-nav{position:fixed;left:0;right:0;bottom:0;height:70px;background:var(--bg-primary);display:flex;border-top:1px solid var(--card-border);box-shadow:0 -4px 12px rgba(0,0,0,0.05);z-index:99;safe-area-inset-bottom:env(safe-area-inset-bottom)}
.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);font-size:11px;cursor:pointer;transition:var(--transition);text-decoration:none;gap:4px;user-select:none;padding:8px;min-height:70px;touch-action:manipulation}
.nav-item:active,.nav-item.active{color:var(--blue);font-weight:700}
.nav-item i{font-size:clamp(18px,4vw,24px);transition:var(--transition)}
.nav-item:hover{color:var(--blue)}
.nav-item:active i{transform:scale(1.2)}
h1{font-size:clamp(20px,5vw,28px);font-weight:800;margin:clamp(12px,2vw,18px) 0;color:var(--text-primary)}
h2{font-size:clamp(18px,4vw,24px);font-weight:700;margin:clamp(10px,2vw,14px) 0;color:var(--text-primary)}
h3{font-size:clamp(14px,3vw,18px);font-weight:700;margin:clamp(10px,2vw,14px) 0 clamp(6px,1vw,10px) 0;color:var(--text-primary)}
section{margin-bottom:clamp(12px,2vw,16px);color:var(--text-primary)}
.filter-btn{padding:clamp(8px,1.5vw,12px) clamp(12px,2vw,16px);border-radius:20px;border:2px solid var(--card-border);background:var(--bg-primary);cursor:pointer;font-weight:600;font-size:clamp(12px,2.5vw,14px);transition:var(--transition);color:var(--text-secondary);user-select:none;white-space:nowrap;min-height:40px;touch-action:manipulation}
.filter-btn:hover{border-color:var(--blue);color:var(--blue)}
.filter-btn.active{background:var(--blue);color:white;border-color:var(--blue);box-shadow:var(--shadow-md)}
.garage-card{background:var(--card-bg);border-radius:16px;padding:clamp(10px,2vw,16px);display:flex;gap:clamp(10px,2vw,14px);margin:clamp(10px,2vw,14px) 0;box-shadow:var(--shadow-sm);transition:var(--transition);cursor:pointer;flex-wrap:wrap;align-items:center;min-height:90px;color:var(--text-primary);border:1px solid var(--card-border)}
.garage-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.garage-card a{transition:var(--transition);min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}
.garage-card a:hover{transform:scale(1.1)}

/* Mobile First: Extra Small Screens (0px - 320px) */
@media(max-width:320px){
  body{padding-bottom:70px}
  .header{padding:10px 8px}
  .container{padding:10px}
  .title{font-size:16px}
  .grid{grid-template-columns:repeat(2,1fr);gap:6px}
  .card{padding:8px;min-height:80px}
  .actions{gap:6px}
  .btn{font-size:12px;padding:10px;min-width:100px}
}

/* Small Screens (321px - 599px) */
@media(min-width:321px) and (max-width:599px){
  body{padding-bottom:70px}
  .header{padding:10px 12px}
  .container{padding:12px}
  .title{font-size:18px}
  .grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .card{padding:10px;min-height:85px}
}

/* Medium Screens (600px - 899px) */
@media(min-width:600px){
  .header{padding:14px 16px}
  .container{max-width:600px;margin:0 auto;padding:16px}
  .grid{grid-template-columns:repeat(3,1fr)}
  .slides{height:240px}
  body{padding-bottom:72px}
}

/* Tablets (900px - 1199px) */
@media(min-width:900px){
  .container{max-width:900px;margin:0 auto;padding:20px}
  .grid{grid-template-columns:repeat(4,1fr);gap:12px}
  .garage-card{padding:16px}
  .card{padding:14px}
  .slides{height:280px}
  .actions{gap:16px}
}

/* Large Screens (1200px+) */
@media(min-width:1200px){
  .container{max-width:1200px;margin:0 auto;padding:24px}
  .grid{grid-template-columns:repeat(4,1fr);gap:16px}
  .garage-card{padding:18px;display:flex;flex-wrap:nowrap}
  .slides{height:320px}
}

/* Large Screens (1600px+) */
@media(min-width:1600px){
  .container{max-width:1400px}
  .grid{grid-template-columns:repeat(5,1fr)}
  .slides{height:400px}
}

/* Touch Device Optimizations */
@media(hover:none){
  .btn:active{transform:scale(0.98)}
  .card:active{transform:translateY(-2px)}
  .filter-btn:active{opacity:0.8}
  .nav-item:active{transform:scale(1.05)}
}

/* Carousel dark-theme tweaks */
[data-theme="dark"] .carousel-control{background:rgba(255,255,255,0.08);color:var(--text-primary)}
[data-theme="dark"] .carousel-control:hover{background:rgba(255,255,255,0.12)}
[data-theme="dark"] .carousel-indicators button{background:rgba(255,255,255,0.18)}
[data-theme="dark"] .carousel-indicators button[aria-current="true"]{background:var(--blue)}

/* Landscape Mode */
@media(max-height:500px){
  body{padding-bottom:60px}
  .header{padding:8px 12px;min-height:48px}
  .bottom-nav{height:60px}
  .nav-item{padding:4px}
  .slides{height:120px}
  .carousel{margin-bottom:8px}
}

/* Auth (Login / Signup) styles */
body.auth-page{background:linear-gradient(180deg,rgba(0,102,255,0.06),rgba(0,82,204,0.02));min-height:100vh}
.auth-wrapper{display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center;justify-content:center;min-height:calc(100vh - 110px);padding:36px}
.auth-art{display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,rgba(0,102,255,0.06),transparent);border-radius:16px;padding:34px;min-height:360px}
.auth-art img{max-width:100%;height:auto;filter:drop-shadow(0 18px 30px rgba(0,102,255,0.06));opacity:0.98;transform-origin:center;animation:fadeInUp 0.7s cubic-bezier(.2,.9,.2,1) both, float 6s ease-in-out 1s infinite}

@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-8px)}100%{transform:translateY(0)}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(10px) scale(0.992)}to{opacity:1;transform:translateY(0) scale(1)}}

 .auth-card{width:100%;max-width:420px;background:linear-gradient(180deg,var(--bg-primary),var(--bg-primary));border-radius:16px;padding:28px;box-shadow:0 10px 30px rgba(6,40,101,0.08);border:1px solid transparent;position:relative;overflow:hidden;transition:transform 0.36s ease,box-shadow 0.36s ease;animation:cardIn 0.6s cubic-bezier(.2,.9,.2,1) both}

@keyframes cardIn{from{opacity:0;transform:translateY(12px) scale(0.996)}to{opacity:1;transform:translateY(0) scale(1)}}
.auth-card::before{content:'';position:absolute;inset:0;padding:1px;border-radius:16px;background:linear-gradient(90deg,var(--blue),var(--blue-dark));-webkit-mask:linear-gradient(#000,#000) content-box, linear-gradient(#000,#000);mask:linear-gradient(#000,#000) content-box, linear-gradient(#000,#000);mask-composite:exclude;pointer-events:none;opacity:0.08}
.auth-card:hover{transform:translateY(-8px);box-shadow:0 20px 50px rgba(6,40,101,0.08)}
.auth-brand{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.auth-brand .logo{height:40px}
.auth-title{font-size:22px;font-weight:800;margin-bottom:2px;color:var(--text-primary)}
.auth-sub{font-size:13px;color:var(--text-secondary);margin-bottom:16px}
.auth-form{display:flex;flex-direction:column;gap:12px}
.input-group{display:flex;align-items:center;background:var(--card-bg);border-radius:12px;padding:10px 12px;border:1px solid var(--input-border);gap:12px}
.input-group:focus-within{box-shadow:0 12px 40px rgba(0,102,255,0.06);border-color:var(--blue);transform:translateY(-2px)}
.input-group i{color:var(--blue);min-width:26px;text-align:center}
.input-group input{border:0;background:transparent;outline:none;width:100%;padding:8px;font-size:15px;color:var(--text-primary)}
.show-pass{background:transparent;border:0;color:var(--gray);cursor:pointer;min-width:34px}
.auth-error{color:var(--danger);font-size:13px;display:none;margin-top:4px}
.auth-actions{display:flex;flex-direction:column;gap:12px;margin-top:6px}
.btn.primary{padding:12px 14px;border-radius:12px;font-weight:800}
.btn.primary:disabled{opacity:0.6;cursor:not-allowed}
.auth-cta{display:flex;justify-content:space-between;align-items:center;gap:12px}
.auth-cta a{font-size:13px;color:var(--blue);text-decoration:none}
.auth-footer{margin-top:14px;text-align:center;font-size:13px;color:var(--text-secondary)}
@media (max-width:900px){.auth-wrapper{grid-template-columns:1fr;gap:18px;padding:18px}.auth-art{order:-1;min-height:200px}}

/* Input error state */
.input-group.error{border-color:var(--danger);box-shadow:0 8px 30px rgba(255,77,79,0.06);animation:shake 0.36s ease}
.input-group.error i{color:var(--danger)}
@keyframes shake{0%{transform:translateX(0)}25%{transform:translateX(-6px)}50%{transform:translateX(6px)}75%{transform:translateX(-4px)}100%{transform:translateX(0)}}

/* Toast notifications */
.toast{position:fixed;left:50%;transform:translateX(-50%) translateY(-20px);top:24px;min-width:220px;max-width:90%;padding:12px 16px;border-radius:10px;background:var(--bg-primary);box-shadow:0 8px 30px rgba(0,0,0,0.12);display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text-primary);z-index:999;opacity:0;pointer-events:none;transition:all 0.36s cubic-bezier(.2,.9,.2,1)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto}
.toast.success{border-left:6px solid var(--success)}
.toast.error{border-left:6px solid var(--danger)}

/* Dark theme tweaks for auth */
[data-theme="dark"] body.auth-page{background:linear-gradient(180deg,rgba(0,0,0,0.32),rgba(10,10,10,0.08))}
[data-theme="dark"] .auth-card{background:linear-gradient(180deg,var(--card-bg),var(--card-bg));box-shadow:0 14px 40px rgba(0,0,0,0.45)}
[data-theme="dark"] .toast{background:var(--card-bg);color:var(--text-primary)}

/* Print Optimization */
@media print{
  .header,.bottom-nav,.btn{display:none}
  body{padding:0;background:var(--bg-primary)}
  .container{max-width:100%}
}