:root{font-family:Inter,"Noto Sans Thai",system-ui,-apple-system,sans-serif;color:#172033;background:#eef2f7;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#fff 0,#eef2f7 48%,#e3e8ef 100%)}.shell{width:min(100%,520px);margin:auto;padding:18px 14px 40px}.tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:5px;margin-bottom:12px;border:1px solid #d8dee8;border-radius:16px;background:#fff9;box-shadow:0 8px 24px #1f293714}.tab{text-align:center;padding:11px 8px;border-radius:11px;color:#667085;text-decoration:none;font-weight:750}.tab.active{color:#fff;background:#172033;box-shadow:0 5px 14px #17203333}.card{background:#fff;border:1px solid #dce2eb;border-radius:24px;padding:22px;box-shadow:0 20px 55px #3440541a}.hero{display:flex;gap:15px;align-items:center;padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid #edf0f5}.brick{display:grid;place-items:center;width:66px;height:66px;flex:0 0 66px;border-radius:18px;color:#fff;background:#e2231a;font-weight:950;letter-spacing:-1px;box-shadow:inset 0 -5px 0 #b91c1c,0 10px 25px #e2231a33}.hero h1{font-size:26px;line-height:1.1;margin:2px 0 5px}.hero p{margin:0;color:#667085;font-size:14px}.hero .eyebrow{font-size:11px;letter-spacing:.16em;color:#e2231a;font-weight:900}form{display:grid;gap:17px}label{display:grid;gap:7px;font-size:14px;font-weight:760}.optional,small{font-size:12px;color:#87909f;font-weight:500}input,select{width:100%;min-height:52px;border:1px solid #ccd4df;border-radius:13px;background:#fff;padding:0 14px;color:#172033;font:inherit;font-size:16px;outline:none;transition:.2s}input:focus,select:focus{border-color:#e2231a;box-shadow:0 0 0 4px #e2231a14}.money{display:flex;align-items:center;border:1px solid #ccd4df;border-radius:13px;overflow:hidden}.money:focus-within{border-color:#e2231a;box-shadow:0 0 0 4px #e2231a14}.money span{padding-left:14px;font-size:18px;color:#667085}.money input{border:0;box-shadow:none!important}.primary{min-height:54px;border:0;border-radius:14px;margin-top:3px;background:#e2231a;color:#fff;font:inherit;font-size:16px;font-weight:850;cursor:pointer;box-shadow:0 10px 24px #e2231a38}.primary:disabled{opacity:.58;cursor:wait}.message{min-height:20px;margin:0;text-align:center;font-size:14px}.message.ok{color:#087443}.message.error{color:#b42318}.loading{padding:24px;text-align:center;color:#667085}.product-image{position:relative;display:grid;place-items:center;min-height:230px;margin:20px 0 0;padding:14px;border:1px solid #e2e7ef;border-radius:18px;background:linear-gradient(145deg,#fff,#f5f7fa);overflow:hidden}.product-image.hidden{display:none}.product-image img{display:none;width:100%;max-width:360px;max-height:290px;object-fit:contain}.product-image.loaded img{display:block}.product-image.loaded .image-skeleton{display:none}.product-image figcaption{margin-top:8px;color:#667085;font-size:12px}.image-skeleton{color:#87909f;font-size:13px}.product-image.missing{min-height:90px}.product-image.missing .image-skeleton{color:#667085}.result{margin-top:20px;padding:20px;border-radius:18px;border:1px solid #dce2eb;background:#f8fafc}.result.bought{border-color:#b7e4c7;background:#eefbf3}.result.not-bought{border-color:#fed7aa;background:#fff7ed}.result.unknown{border-color:#d8dee8;background:#f8fafc}.result h2{display:flex;align-items:center;gap:9px;margin:0 0 12px;font-size:24px}.result dl{display:grid;grid-template-columns:1fr auto;gap:10px;margin:0}.result dt{color:#667085}.result dd{margin:0;font-weight:800}.badge{display:inline-block;padding:5px 10px;border-radius:99px;font-size:12px;background:#fff}.hidden{display:none}.foot{text-align:center;color:#87909f;font-size:12px;margin:15px 0}@media(max-width:380px){.card{padding:18px}.hero{align-items:flex-start}.brick{width:56px;height:56px;flex-basis:56px}.hero h1{font-size:23px}}

/* LEGO-inspired palette */
:root{color:#171717;background:#ffd500}
body{background:linear-gradient(160deg,#ffe96a 0%,#ffd500 42%,#f6bd00 100%);background-attachment:fixed}
.tabs{border:2px solid #171717;background:#fff3b0;box-shadow:0 8px 0 #171717,0 16px 30px #8a650033}
.tab{color:#171717}
.tab.active{color:#171717;background:#ffd500;box-shadow:inset 0 -4px 0 #e2231a}
.card{border:2px solid #171717;box-shadow:0 10px 0 #171717,0 24px 45px #8a650038}
.hero{border-bottom:3px solid #ffd500}
.hero .eyebrow{color:#d71920}
.hero p,.optional,small,.product-image figcaption,.result dt{color:#5c5130}
input,select,.money{border:2px solid #171717}
input:focus,select:focus,.money:focus-within{border-color:#e2231a;box-shadow:0 0 0 4px #ffd500}
.primary{border:2px solid #171717;background:#e2231a;box-shadow:0 7px 0 #171717,0 14px 24px #b91c1c35}
.primary:active{transform:translateY(4px);box-shadow:0 3px 0 #171717}
.product-image{border:2px solid #171717;background:linear-gradient(145deg,#fff,#fff8cf)}
.result{border:2px solid #171717}
.foot{color:#171717;font-weight:700}

/* Black LEGO theme */
:root{font-family:"Prompt","Noto Sans Thai",Tahoma,system-ui,sans-serif;color:#f7f7f7;background:#080808}
body{padding-bottom:96px;background:radial-gradient(circle at 50% -15%,#343434 0,#151515 36%,#050505 78%);background-attachment:fixed}
.shell{padding-top:24px}
.card{border-color:#ffd500;background:#111;box-shadow:0 10px 0 #ffd500,0 28px 60px #000}
.hero{border-bottom-color:#ffd500}
.brick{color:#171717;background:#ffd500;border:3px solid #fff;border-radius:14px;text-shadow:1px 1px 0 #fff;box-shadow:inset 0 -6px 0 #d4aa00,0 0 0 3px #e2231a,0 12px 28px #ffd50032}
.hero h1,label{color:#fff}
.hero .eyebrow{color:#ffd500}
.hero p,.optional,small,.product-image figcaption,.result dt,.loading{color:#b9b9b9}
input,select,.money{border-color:#4b4b4b;background:#1d1d1d;color:#fff}
input::placeholder{color:#777}
select option{background:#1d1d1d;color:#fff}
input:focus,select:focus,.money:focus-within{border-color:#ffd500;box-shadow:0 0 0 4px #ffd50029}
.money span{color:#ffd500}
.primary{color:#171717;border-color:#ffd500;background:#ffd500;box-shadow:0 7px 0 #9c7e00,0 16px 28px #ffd5002e}
.primary:active{box-shadow:0 3px 0 #9c7e00}
.message.ok{color:#65e6a0}.message.error{color:#ff786f}
.product-image{border-color:#ffd500;background:linear-gradient(145deg,#fff,#fff5b3)}
.result{color:#171717;border-color:#ffd500}
.foot{color:#b9b9b9}
.bottom-nav{position:fixed;z-index:20;right:50%;bottom:max(14px,env(safe-area-inset-bottom));transform:translateX(50%);width:min(calc(100% - 28px),492px);margin:0;padding:7px;border:1px solid #555;background:#151515eF;box-shadow:0 14px 42px #000;backdrop-filter:blur(14px)}
.tab{display:flex;align-items:center;justify-content:center;gap:7px;min-height:52px;color:#aaa}
.tab.active{color:#171717;background:#ffd500;box-shadow:none}
.nav-icon{display:grid;place-items:center;width:24px;height:24px;border-radius:8px;font-size:20px;font-weight:800;line-height:1}
@media(max-width:380px){.tab{gap:4px;font-size:12px}.bottom-nav{width:calc(100% - 20px)}}
.app-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin:20px 0 0}
.connection-status{padding:7px 11px;border:1px solid #555;border-radius:999px;color:#bbb;background:#171717;font-size:11px}
.connection-status.online{border-color:#2c8656;color:#80e8ad}.connection-status.offline{border-color:#9e3832;color:#ff8c84}
.utility-button,.install-app{min-height:34px;padding:6px 12px;border:1px solid #ffd500;border-radius:999px;background:transparent;color:#ffd500;font:600 11px "Prompt",sans-serif;cursor:pointer}
.utility-button:disabled{opacity:.5;cursor:wait}
.error-home{display:grid;place-items:center;text-decoration:none}