/* ============================================================
   B-TUNINGPARTS DESIGN SYSTEM
   Premium Automotive / Performance Workshop Aesthetic
   ============================================================ */

/* --- CSS RESET --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;line-height:1.6;color:var(--text);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .2s}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,textarea,select{font-family:inherit;font-size:inherit}

/* --- DESIGN TOKENS --- */
:root{
  /* Primary */
  --primary:#1A1A2E;
  --primary-light:#2D2D44;
  --primary-dark:#0D0D1A;
  /* Accent */
  --accent:#E63946;
  --accent-hover:#C62D39;
  --accent-light:rgba(230,57,70,.12);
  /* Secondary */
  --secondary:#4CC9F0;
  --secondary-dark:#2BA8CF;
  /* Neutrals */
  --bg:#FFFFFF;
  --bg-alt:#F1F5F9;
  --bg-dark:#0F172A;
  --text:#1E293B;
  --text-light:#64748B;
  --text-inv:#F8FAFC;
  --border:#E2E8F0;
  --border-dark:#334155;
  /* Shadows */
  --shadow-sm:0 1px 3px rgba(0,0,0,.08);
  --shadow-md:0 4px 12px rgba(0,0,0,.1);
  --shadow-lg:0 12px 40px rgba(0,0,0,.12);
  --shadow-accent:0 4px 20px rgba(230,57,70,.25);
  /* Radius */
  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --radius-xl:24px;
  /* Spacing */
  --space-xs:.5rem;
  --space-sm:1rem;
  --space-md:1.5rem;
  --space-lg:2.5rem;
  --space-xl:4rem;
  --space-2xl:6rem;
  /* Transitions */
  --ease:cubic-bezier(.4,0,.2,1);
  --duration:.3s;
  /* Header */
  --header-h:72px;
  /* Container */
  --container:1200px;
}

/* --- TYPOGRAPHY --- */
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;letter-spacing:-.02em;color:var(--primary)}
h1{font-size:clamp(2rem,5vw,3.25rem)}
h2{font-size:clamp(1.6rem,4vw,2.5rem)}
h3{font-size:clamp(1.25rem,3vw,1.75rem)}
h4{font-size:1.15rem}
p{margin-bottom:1rem;line-height:1.7}
.text-accent{color:var(--accent)}
.text-light{color:var(--text-light)}
.text-inv{color:var(--text-inv)}
.lead{font-size:1.15rem;color:var(--text-light);line-height:1.8}

/* --- LAYOUT --- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--space-md)}
.section{padding:var(--space-2xl) 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--bg-dark);color:var(--text-inv)}
.section-dark h2,.section-dark h3,.section-dark h4{color:var(--text-inv)}
.grid{display:grid;gap:var(--space-lg)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.flex{display:flex;align-items:center;gap:var(--space-sm)}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.text-center{text-align:center}

/* --- BUTTONS --- */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.75rem;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;transition:all var(--duration) var(--ease);white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-accent);transform:translateY(-2px)}
.btn-secondary{background:var(--primary);color:#fff}
.btn-secondary:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-outline{border:2px solid var(--accent);color:var(--accent)}
.btn-outline:hover{background:var(--accent);color:#fff}
.btn-phone{background:var(--secondary);color:var(--primary-dark);font-weight:700}
.btn-phone:hover{background:var(--secondary-dark);transform:translateY(-2px)}
.btn-sm{padding:.5rem 1.25rem;font-size:.85rem}
.btn-lg{padding:1rem 2.25rem;font-size:1.05rem}

/* --- TOP BAR --- */
.top-bar{background:var(--primary-dark);color:var(--text-inv);padding:.4rem 0;font-size:.82rem}
.top-bar a{color:var(--secondary);font-weight:500}
.top-bar a:hover{color:#fff}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
.top-bar-left{display:flex;align-items:center;gap:1.25rem}
.top-bar-right{display:flex;align-items:center;gap:1rem}
.status-dot{width:8px;height:8px;border-radius:50%;display:inline-block;margin-right:.35rem;animation:pulse 2s infinite}
.status-open{background:#22C55E}
.status-closed{background:#EF4444}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* --- HEADER --- */
.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--header-h);transition:box-shadow var(--duration)}
.header.scrolled{box-shadow:var(--shadow-md)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:.75rem}
.logo img{height:48px;width:auto}
.logo-text{font-weight:800;font-size:1.15rem;color:var(--primary)}
.logo-text span{color:var(--accent)}

/* --- NAV & MEGAMENU --- */
.nav{display:flex;align-items:center;gap:0}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:.35rem;padding:0 1rem;height:var(--header-h);font-weight:600;font-size:.9rem;color:var(--text);transition:color var(--duration)}
.nav-link:hover,.nav-link.active{color:var(--accent)}
.nav-link i.fa-chevron-down{font-size:.6rem;transition:transform var(--duration)}
.nav-item:hover .nav-link i.fa-chevron-down{transform:rotate(180deg)}
.dropdown{position:absolute;top:100%;left:0;min-width:260px;background:#fff;border-radius:0 0 var(--radius-md) var(--radius-md);box-shadow:var(--shadow-lg);border-top:3px solid var(--accent);opacity:0;visibility:hidden;transform:translateY(8px);transition:all var(--duration) var(--ease);padding:.5rem 0}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:flex;align-items:center;gap:.75rem;padding:.65rem 1.25rem;font-size:.88rem;color:var(--text);transition:all .15s}
.dropdown a:hover{background:var(--accent-light);color:var(--accent);padding-left:1.5rem}
.dropdown a i{color:var(--accent);font-size:.7rem;opacity:.5}
.header-cta{display:flex;align-items:center;gap:.75rem}

/* Mobile toggle */
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:.5rem;cursor:pointer}
.mobile-toggle span{width:24px;height:2px;background:var(--text);transition:all var(--duration)}

/* --- HERO --- */
.hero{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;background:var(--primary)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.35}
.hero-gradient{position:absolute;inset:0;background:linear-gradient(105deg,var(--primary) 40%,transparent 75%);z-index:1}
.hero-content{position:relative;z-index:2;max-width:600px;padding:var(--space-xl) 0}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:var(--accent-light);border:1px solid var(--accent);color:var(--accent);padding:.35rem 1rem;border-radius:50px;font-size:.8rem;font-weight:600;margin-bottom:var(--space-md)}
.hero h1{color:#fff;margin-bottom:var(--space-md)}
.hero .lead{color:rgba(255,255,255,.8);margin-bottom:var(--space-lg)}
.hero-cta{display:flex;gap:var(--space-sm);flex-wrap:wrap}
.hero-stats{display:flex;gap:var(--space-lg);margin-top:var(--space-xl);padding-top:var(--space-md);border-top:1px solid rgba(255,255,255,.15)}
.hero-stat{text-align:center}
.hero-stat .number{font-size:1.75rem;font-weight:800;color:var(--secondary)}
.hero-stat .label{font-size:.78rem;color:rgba(255,255,255,.6);text-transform:uppercase;letter-spacing:.05em}

/* Glassmorphism cards */
.glass{background:rgba(255,255,255,.08);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg)}

/* --- TRUST BAR --- */
.trust-bar{background:var(--bg-alt);border-bottom:1px solid var(--border);padding:var(--space-md) 0}
.trust-bar .container{display:flex;justify-content:center;gap:var(--space-xl);flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:.75rem;font-size:.9rem;font-weight:600;color:var(--text)}
.trust-item i{font-size:1.25rem;color:var(--accent)}

/* --- CARDS --- */
.card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:all var(--duration) var(--ease)}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--accent)}
.card-img{aspect-ratio:16/10;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:var(--space-md)}
.card-body h3{margin-bottom:.5rem}
.card-body p{color:var(--text-light);font-size:.92rem}
.card-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--accent);font-weight:600;font-size:.9rem;margin-top:.75rem;transition:gap var(--duration)}
.card-link:hover{gap:.75rem}

/* --- SERVICE FEATURES --- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-lg)}
.feature{padding:var(--space-lg);border-radius:var(--radius-lg);background:#fff;border:1px solid var(--border);transition:all var(--duration)}
.feature:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
.feature-icon{width:56px;height:56px;border-radius:var(--radius-md);background:var(--accent-light);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-sm);font-size:1.35rem;color:var(--accent)}
.feature h4{margin-bottom:.5rem}
.feature p{color:var(--text-light);font-size:.9rem}

/* --- STEPS (How it works) --- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-lg);counter-reset:step}
.step{text-align:center;position:relative;padding:var(--space-lg) var(--space-md)}
.step::before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;font-size:1.35rem;font-weight:800;margin:0 auto var(--space-sm)}
.step h4{margin-bottom:.5rem}
.step p{color:var(--text-light);font-size:.9rem}

/* --- COMPARISON (Why Us) --- */
.comparison{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-lg);max-width:900px;margin:0 auto}
.comparison-col{padding:var(--space-lg);border-radius:var(--radius-lg)}
.comparison-us{background:var(--primary);color:var(--text-inv);border:2px solid var(--accent)}
.comparison-others{background:var(--bg-alt);border:1px solid var(--border)}
.comparison-col h3{margin-bottom:var(--space-md);text-align:center}
.comparison-us h3{color:var(--secondary)}
.comparison-col ul{display:flex;flex-direction:column;gap:.75rem}
.comparison-col li{display:flex;align-items:flex-start;gap:.75rem;font-size:.92rem}
.comparison-us li i{color:#22C55E}
.comparison-others li i{color:var(--accent)}

/* --- FAQ --- */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:.75rem}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:border-color var(--duration)}
.faq-item.active{border-color:var(--accent)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:1.15rem var(--space-md);cursor:pointer;font-weight:600;font-size:.95rem;background:#fff;transition:background var(--duration)}
.faq-q:hover{background:var(--bg-alt)}
.faq-q i{transition:transform var(--duration);color:var(--accent);font-size:.8rem}
.faq-item.active .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a-inner{padding:0 var(--space-md) var(--space-md);color:var(--text-light);font-size:.92rem;line-height:1.7}

/* --- SEO BLOCK (Otto-Style) --- */
.seo-block{padding:var(--space-2xl) 0;background:var(--bg-alt)}
.seo-block h2{font-size:1.35rem;margin-bottom:var(--space-sm)}
.seo-block h3{font-size:1.1rem;margin:var(--space-md) 0 .5rem;color:var(--primary)}
.seo-block p{font-size:.9rem;color:var(--text-light);line-height:1.8;margin-bottom:.75rem}
.seo-block a{color:var(--accent);font-weight:500;text-decoration:underline}
.seo-block a:hover{color:var(--accent-hover)}

/* --- CONTACT FORM --- */
.form-group{margin-bottom:var(--space-sm)}
.form-group label{display:block;font-weight:600;font-size:.88rem;margin-bottom:.35rem;color:var(--text)}
.form-control{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.95rem;transition:border-color var(--duration);background:#fff}
.form-control:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}
textarea.form-control{min-height:140px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-sm)}
.form-check{display:flex;align-items:flex-start;gap:.5rem;font-size:.82rem;color:var(--text-light)}
.form-check input[type="checkbox"]{margin-top:.25rem;accent-color:var(--accent)}

/* --- FOOTER --- */
.footer{background:var(--bg-dark);color:var(--text-inv);padding:var(--space-2xl) 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--space-xl)}
.footer h4{color:var(--secondary);font-size:.95rem;margin-bottom:var(--space-md);text-transform:uppercase;letter-spacing:.05em}
.footer-about p{color:rgba(255,255,255,.6);font-size:.88rem}
.footer-links a{display:block;padding:.3rem 0;color:rgba(255,255,255,.6);font-size:.88rem;transition:color var(--duration)}
.footer-links a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:flex-start;gap:.75rem;margin-bottom:.75rem;color:rgba(255,255,255,.6);font-size:.88rem}
.footer-contact li i{color:var(--accent);margin-top:.2rem;width:16px}
.footer-bottom{margin-top:var(--space-xl);padding:var(--space-md) 0;border-top:1px solid var(--border-dark);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-size:.8rem;color:rgba(255,255,255,.4)}
.footer-bottom a{color:rgba(255,255,255,.5);transition:color var(--duration)}
.footer-bottom a:hover{color:var(--accent)}
.footer-legal{display:flex;gap:var(--space-md)}

/* --- HOURS DROPDOWN --- */
.hours-dropdown{position:relative;cursor:pointer}
.hours-dropdown-content{position:absolute;top:100%;right:0;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:var(--space-sm);min-width:220px;opacity:0;visibility:hidden;transform:translateY(4px);transition:all var(--duration);z-index:100}
.hours-dropdown:hover .hours-dropdown-content{opacity:1;visibility:visible;transform:translateY(0)}
.hours-dropdown-content table{width:100%;font-size:.82rem;color:var(--text)}
.hours-dropdown-content td{padding:.2rem .5rem}
.hours-dropdown-content .today{font-weight:700;color:var(--accent)}

/* --- COOKIE BANNER --- */
.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:var(--primary-dark);color:var(--text-inv);padding:var(--space-md);z-index:9999;transform:translateY(100%);transition:transform .4s var(--ease);box-shadow:0 -4px 20px rgba(0,0,0,.3)}
.cookie-banner.show{transform:translateY(0)}
.cookie-banner .container{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);flex-wrap:wrap}
.cookie-banner p{font-size:.85rem;color:rgba(255,255,255,.8);flex:1}
.cookie-banner a{color:var(--secondary);text-decoration:underline}
.cookie-btns{display:flex;gap:.5rem}

/* --- RESPONSIVE --- */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .comparison{grid-template-columns:1fr}
}
@media(max-width:768px){
  :root{--header-h:64px}
  .nav{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:#fff;flex-direction:column;align-items:stretch;padding:var(--space-md);transform:translateX(100%);transition:transform var(--duration) var(--ease);z-index:999;overflow-y:auto}
  .nav.open{transform:translateX(0)}
  .nav-link{height:auto;padding:.85rem 0;border-bottom:1px solid var(--border)}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;border-top:none;border-radius:0;padding-left:1rem;display:none}
  .nav-item.open .dropdown{display:block}
  .mobile-toggle{display:flex}
  .header-cta{display:none}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero{min-height:auto;padding:var(--space-xl) 0}
  .hero-stats{flex-direction:column;gap:var(--space-sm)}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%;justify-content:center}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .top-bar .container{justify-content:center;text-align:center}
  .top-bar-right{display:none}
  .trust-bar .container{gap:var(--space-md)}
  .section{padding:var(--space-xl) 0}
}
@media(max-width:480px){
  .trust-bar .container{flex-direction:column;gap:var(--space-sm)}
}

/* --- ANIMATIONS --- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s var(--ease) both}
.delay-1{animation-delay:.1s}
.delay-2{animation-delay:.2s}
.delay-3{animation-delay:.3s}
.delay-4{animation-delay:.4s}

/* --- SCROLL REVEAL (JS driven) --- */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-reveal].revealed{opacity:1;transform:translateY(0)}

/* --- MAP SECTION --- */
.map-container{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);aspect-ratio:16/9}
.map-container iframe{width:100%;height:100%;border:0}
.map-container img{width:100%;height:100%;object-fit:cover}

/* --- BACK TO TOP --- */
.back-to-top{position:fixed;bottom:2rem;right:2rem;width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(10px);transition:all var(--duration);z-index:99;font-size:.9rem}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--accent-hover);transform:translateY(-2px)}