/* === RESET & VARIABLES === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0e17;--surface:#111827;--card:#1f2937;--card-elevated:#374151;
  --accent:#3b82f6;--accent-light:#60a5fa;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;
  --text:#f9fafb;--text-secondary:#9ca3af;--border:#374151;
  --radius-card:16px;--radius-btn:12px;--radius-input:8px;
  --safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);
  --header-h:56px;--nav-h:64px;
}
html{font-size:16px;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;min-height:100dvh;line-height:1.5}
input,button,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:none;background:none;color:inherit}
a{color:var(--accent-light);text-decoration:none}
img{display:block;max-width:100%}

/* === SCREENS === */
.screen{display:none;width:100%;min-height:100dvh}
.screen.active{display:flex;flex-direction:column}

/* === LOGIN === */
#login-screen{position:relative;justify-content:center;align-items:center;padding:24px}
.login-bg{position:fixed;inset:0;background:linear-gradient(135deg,#0a0e17 0%,#1e1b4b 50%,#0a0e17 100%);background-size:200% 200%;animation:gradShift 8s ease infinite;z-index:0}
@keyframes gradShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.login-content{position:relative;z-index:1;width:100%;max-width:360px;text-align:center}
.login-logo{font-size:72px;margin-bottom:8px;filter:drop-shadow(0 0 30px rgba(59,130,246,.3))}
.login-title{font-size:28px;font-weight:800;letter-spacing:-.5px;margin-bottom:4px}
.login-subtitle{color:var(--text-secondary);font-size:15px;margin-bottom:40px}

.input-group{position:relative;margin-bottom:20px}
.input-group input{width:100%;padding:16px;background:rgba(255,255,255,.06);border:1.5px solid var(--border);border-radius:var(--radius-input);color:var(--text);font-size:16px;transition:border .2s}
.input-group input:focus{outline:none;border-color:var(--accent)}
.input-group label{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-secondary);font-size:16px;pointer-events:none;transition:all .2s ease}
.input-group input:focus+label,.input-group input:not(:placeholder-shown)+label{top:0;transform:translateY(-50%) scale(.8);background:var(--bg);padding:0 6px;color:var(--accent);border-radius:4px}
.pw-toggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--text-secondary);padding:8px}

.login-error{color:var(--danger);font-size:14px;min-height:20px;margin-bottom:8px}

.btn-login{width:100%;padding:16px;background:linear-gradient(135deg,var(--accent),#6366f1);color:#fff;font-size:17px;font-weight:700;border-radius:var(--radius-btn);position:relative;overflow:hidden;transition:transform .15s,box-shadow .15s}
.btn-login:active{transform:scale(.97)}
.btn-login.loading span{opacity:0}
.btn-login.loading .btn-loader{opacity:1}
.btn-loader{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s}
.btn-loader::after{content:'';width:24px;height:24px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* === APP HEADER === */
#app-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);padding:0 16px;padding-top:var(--safe-top);display:flex;align-items:center;justify-content:space-between;background:rgba(10,14,23,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:100;border-bottom:1px solid rgba(55,65,81,.5)}
.header-left{display:flex;align-items:center;gap:8px}
.header-logo{font-size:24px}
.header-title{font-size:20px;font-weight:700}
.header-right{display:flex;align-items:center;gap:4px}
.header-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px;position:relative;transition:background .15s}
.header-btn:active{background:rgba(255,255,255,.08)}
.badge{position:absolute;top:6px;right:6px;min-width:18px;height:18px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px}
.badge.hidden{display:none}

/* === BOTTOM NAV === */
#bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--nav-h);padding-bottom:var(--safe-bottom);background:rgba(17,24,39,.96);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:space-around;z-index:100;border-top:1px solid rgba(55,65,81,.5)}
.nav-tab{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0;min-width:60px;color:var(--text-secondary);font-size:11px;font-weight:500;transition:color .2s}
.nav-tab.active{color:var(--accent-light)}
.nav-tab.active svg{stroke:var(--accent-light)}
.nav-tab svg{transition:stroke .2s}

/* === MAIN CONTENT === */
#main-content{margin-top:calc(var(--header-h) + var(--safe-top));margin-bottom:calc(var(--nav-h) + var(--safe-bottom));min-height:calc(100dvh - var(--header-h) - var(--nav-h))}
.page{display:none;padding:12px 0}
.page.active{display:block}

/* === STATS STRIP === */
.stats-strip{display:flex;gap:10px;padding:8px 16px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.stats-strip::-webkit-scrollbar{display:none}
.stat-pill{flex-shrink:0;scroll-snap-align:start;padding:10px 16px;background:var(--card);border-radius:12px;font-size:14px;font-weight:600;white-space:nowrap;border:1px solid var(--border)}
.stat-pill .num{color:var(--accent-light)}
.skeleton-pill{width:140px;height:42px;background:linear-gradient(90deg,var(--card) 25%,var(--card-elevated) 50%,var(--card) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* === SORT === */
.sort-dropdown{padding:8px 16px;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.sort-dropdown::-webkit-scrollbar{display:none}
.sort-dropdown.hidden{display:none}
.sort-opt{flex-shrink:0;padding:8px 14px;background:var(--card);border:1.5px solid var(--border);border-radius:20px;font-size:13px;font-weight:500;color:var(--text-secondary);white-space:nowrap;transition:all .2s}
.sort-opt.active{background:var(--accent);border-color:var(--accent);color:#fff}

/* === CARDS === */
#cards-container{padding:8px 16px;display:flex;flex-direction:column;gap:16px}
.vehicle-card{background:var(--card);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);transition:transform .15s}
.vehicle-card:active{transform:scale(.985)}
.card-img-wrap{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,var(--card-elevated),var(--card));overflow:hidden}
.card-img{width:100%;height:100%;object-fit:cover;transition:opacity .3s}
.card-img.loading{opacity:0}
.card-badge{position:absolute;padding:5px 10px;border-radius:8px;font-size:12px;font-weight:700;backdrop-filter:blur(4px)}
.card-badge.discount{top:10px;left:10px;color:#fff}
.card-badge.discount.green{background:rgba(16,185,129,.85)}
.card-badge.discount.yellow{background:rgba(245,158,11,.85)}
.card-badge.discount.red{background:rgba(239,68,68,.85)}
.card-badge.condition{top:10px;right:10px;background:rgba(0,0,0,.6);color:#fff}
.card-body{padding:14px 16px 16px}
.card-title{font-size:17px;font-weight:700;margin-bottom:4px;line-height:1.3}
.card-meta{font-size:13px;color:var(--text-secondary);margin-bottom:10px;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.card-meta .dot::before{content:'•'}
.card-prices{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}
.card-price-current{font-size:22px;font-weight:800;color:var(--success)}
.card-price-fipe{font-size:14px;color:var(--text-secondary);text-decoration:line-through}
.card-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.card-tag{padding:4px 10px;background:var(--card-elevated);border-radius:6px;font-size:12px;color:var(--text-secondary);font-weight:500}
.card-date{font-size:13px;color:var(--text-secondary);margin-bottom:14px}
.card-date svg{vertical-align:middle;margin-right:4px}
.card-actions{display:flex;gap:10px}
.card-btn{flex:1;padding:12px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;text-align:center;transition:all .15s;min-height:44px;display:flex;align-items:center;justify-content:center;gap:6px}
.card-btn:active{transform:scale(.96)}
.card-btn.primary{background:var(--accent);color:#fff}
.card-btn.secondary{background:var(--card-elevated);color:var(--text)}

/* Analysis expand */
.card-analysis{max-height:0;overflow:hidden;transition:max-height .35s ease}
.card-analysis.open{max-height:400px}
.analysis-content{padding:0 16px 16px;border-top:1px solid var(--border);margin-top:14px;padding-top:14px}
.analysis-row{display:flex;justify-content:space-between;padding:6px 0;font-size:14px}
.analysis-row .label{color:var(--text-secondary)}
.analysis-row .value{font-weight:600}
.analysis-row.highlight .value{color:var(--success);font-size:16px;font-weight:800}
.analysis-divider{height:1px;background:var(--border);margin:8px 0}

/* === SKELETON CARDS === */
.skeleton-cards{padding:8px 16px;display:flex;flex-direction:column;gap:16px}
.skeleton-card{background:var(--card);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border)}
.sk-img{aspect-ratio:16/9;background:linear-gradient(90deg,var(--card) 25%,var(--card-elevated) 50%,var(--card) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
.sk-line{height:14px;border-radius:7px;margin:12px 16px;background:linear-gradient(90deg,var(--card-elevated) 25%,var(--border) 50%,var(--card-elevated) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}
.sk-line.w80{width:70%}.sk-line.w60{width:50%}.sk-line.w40{width:35%}
.skeleton-cards.hidden{display:none}

/* === EMPTY STATE === */
.empty-state{text-align:center;padding:60px 24px;color:var(--text-secondary)}
.empty-state.hidden{display:none}
.empty-icon{font-size:56px;margin-bottom:16px}
.empty-state h3{font-size:18px;color:var(--text);margin-bottom:8px}

/* === FILTER BOTTOM SHEET === */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200;transition:opacity .3s}
.overlay.hidden{opacity:0;pointer-events:none}
.bottom-sheet{position:fixed;bottom:0;left:0;right:0;background:var(--surface);border-radius:20px 20px 0 0;z-index:201;transform:translateY(100%);transition:transform .35s cubic-bezier(.32,.72,0,1);max-height:85dvh;display:flex;flex-direction:column;padding-bottom:var(--safe-bottom)}
.bottom-sheet.open{transform:translateY(0)}
.sheet-handle{width:40px;height:4px;background:var(--card-elevated);border-radius:2px;margin:10px auto}
.sheet-header{display:flex;align-items:center;justify-content:space-between;padding:0 20px 12px;border-bottom:1px solid var(--border)}
.sheet-header h3{font-size:17px;font-weight:700}
.sheet-clear{color:var(--accent-light);font-size:14px;font-weight:600;padding:8px}
.sheet-close{font-size:24px;padding:8px;color:var(--text-secondary)}
.sheet-body{flex:1;overflow-y:auto;padding:16px 20px;-webkit-overflow-scrolling:touch}
.filter-section{margin-bottom:24px}
.filter-section-title{font-size:14px;font-weight:600;margin-bottom:10px;color:var(--text-secondary)}
.chips-scroll{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding-bottom:4px}
.chips-scroll::-webkit-scrollbar{display:none}
.chips-wrap{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:8px 16px;background:var(--card);border:1.5px solid var(--border);border-radius:20px;font-size:13px;font-weight:500;color:var(--text-secondary);white-space:nowrap;transition:all .15s;min-height:38px;display:flex;align-items:center}
.chip.active{background:var(--accent);border-color:var(--accent);color:#fff}
.chip:active{transform:scale(.95)}

.range-slider{-webkit-appearance:none;width:100%;height:6px;border-radius:3px;background:var(--card-elevated);outline:none}
.range-slider::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:var(--accent);border:3px solid var(--bg);cursor:pointer}

.sheet-footer{padding:16px 20px;border-top:1px solid var(--border)}
.btn-apply{width:100%;padding:16px;background:var(--accent);color:#fff;font-size:16px;font-weight:700;border-radius:var(--radius-btn);transition:transform .15s}
.btn-apply:active{transform:scale(.97)}

/* === SEARCH === */
.search-container{padding:12px 16px}
.search-input-wrap{display:flex;align-items:center;gap:10px;padding:0 16px;background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius-btn);height:48px}
.search-input-wrap svg{flex-shrink:0;color:var(--text-secondary)}
#search-input{flex:1;background:none;border:none;color:var(--text);font-size:16px;outline:none}
#search-input::placeholder{color:var(--text-secondary)}
.search-clear{font-size:20px;color:var(--text-secondary);padding:4px 8px}
.search-clear.hidden{display:none}
#search-results{padding:8px 16px;display:flex;flex-direction:column;gap:16px}

/* === PLACEHOLDER PAGES === */
.placeholder-page{text-align:center;padding:80px 24px}
.placeholder-icon{font-size:64px;margin-bottom:16px}
.placeholder-page h3{font-size:20px;margin-bottom:8px}
.placeholder-page p{color:var(--text-secondary);margin-bottom:24px}
.btn-logout{padding:14px 40px;background:var(--danger);color:#fff;font-size:15px;font-weight:600;border-radius:var(--radius-btn);transition:transform .15s}
.btn-logout:active{transform:scale(.96)}

/* === DESKTOP (≥768px) === */
@media(min-width:768px){
  #cards-container,#search-results{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  #main-content{max-width:960px;margin-left:auto;margin-right:auto}
}
@media(min-width:1024px){
  #cards-container,#search-results{grid-template-columns:repeat(3,1fr)}
  #main-content{max-width:1200px}
}