:root{
  --navy:#0A1A33; --aqua:#07FEFF;
  --n80:rgba(10,26,51,.8); --n60:rgba(10,26,51,.62); --n12:rgba(10,26,51,.12); --n06:rgba(10,26,51,.06); --n03:rgba(10,26,51,.03);
  --bg:#F3F4F6; --white:#fff; --error:#B42318; --radius:16px;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{margin:0}
body{font-family:'Satoshi',Arial,Helvetica,sans-serif;background:var(--bg);color:var(--navy);font-size:15px;line-height:1.5}
a{color:var(--navy)}
h1{font-size:24px;margin:0 0 16px}
h2{font-size:17px;margin:0 0 12px}
h3{font-size:15px;margin:0}
.center{text-align:center}
.mt8{margin-top:8px}
.hint{font-size:13px;color:var(--n60);margin:4px 0 0}
.err-text{font-size:13px;color:var(--error);margin:4px 0 0}
.req{color:var(--error)}
.opt{color:var(--n60);font-weight:400}
.offscreen{position:fixed;left:-9999px;top:0;background:#fff}

/* top bar */
.topbar{background:var(--navy);color:#fff;display:flex;align-items:center;gap:16px;padding:12px 24px;position:sticky;top:0;z-index:20;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}
.brand span{display:flex;flex-direction:column;line-height:1.2}
.brand small{color:var(--aqua);font-size:12px}
.nav{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
.nav a{color:rgba(255,255,255,.8);text-decoration:none;font-weight:500;font-size:14px;padding:8px 12px;border-radius:8px}
.nav a:hover,.nav a.active{color:#fff;background:rgba(255,255,255,.1)}
.nav a:focus-visible{outline:2px solid var(--aqua)}

main{max-width:1440px;margin:0 auto;padding:24px}
.panel{background:var(--white);border:1px solid var(--n12);border-radius:var(--radius);padding:24px;margin-bottom:16px}
.narrow{max-width:480px;margin:0 auto}
.page-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:8px}
.page-head h1{margin:0}

/* builder layout */
.builder{display:grid;grid-template-columns:400px minmax(0,1fr);gap:24px;align-items:start}
.form{position:sticky;top:84px;max-height:calc(100vh - 108px);overflow-y:auto;margin:0}
.right{min-width:0}
@media (max-width:1000px){.builder{grid-template-columns:1fr}.form{position:static;max-height:none}}
@media (max-width:600px){main{padding:16px}.panel{padding:16px}.topbar{padding:12px 16px}}

.sec{font-size:14px;font-weight:700;margin:24px 0 8px;display:flex;align-items:center;gap:8px}
.sec:first-of-type{margin-top:0}
.sec::after{content:"";flex:1;height:1px;background:var(--n12)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:500;margin-bottom:4px}
input:not([type=checkbox]):not([type=radio]):not([type=color]):not([type=file]),select,textarea{
  width:100%;padding:9px 12px;border:1.5px solid var(--n12);border-radius:8px;font:inherit;font-size:14px;color:var(--navy);background:#fff}
input::placeholder,textarea::placeholder{color:rgba(10,26,51,.4)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(7,254,255,.5)}
input.invalid{border-color:var(--error)}
textarea{resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
@media (max-width:420px){.row2,.row3{grid-template-columns:1fr}}
.color{display:flex;gap:8px;align-items:center}
.color input[type=color]{width:40px;height:40px;border:1.5px solid var(--n12);border-radius:8px;padding:2px;background:#fff;flex-shrink:0;cursor:pointer}
.seg{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.seg label{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1.5px solid var(--n12);border-radius:8px;font-size:14px;font-weight:500;cursor:pointer}
.seg label:has(input:checked){border-color:var(--navy);box-shadow:inset 0 0 0 1px var(--navy)}
.seg input{accent-color:var(--navy)}
.logo-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.logo-row img{max-height:48px;max-width:140px;border:1px solid var(--n12);border-radius:6px;padding:4px;background:#fff}
.editing{display:flex;justify-content:space-between;align-items:center;background:var(--n03);border:1px dashed var(--n12);border-radius:8px;padding:8px 12px;margin-bottom:16px;font-size:13px}

.social-row{display:grid;grid-template-columns:140px 1fr;gap:8px;align-items:center;margin-bottom:8px}
.switch-label{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500;cursor:pointer}
.switch-label input{position:absolute;opacity:0;width:1px;height:1px}
.switch{width:36px;height:20px;border-radius:20px;background:var(--n12);position:relative;flex-shrink:0;transition:.15s}
.switch::after{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.15s}
.switch-label input:checked + .switch{background:var(--navy)}
.switch-label input:checked + .switch::after{transform:translateX(16px);background:var(--aqua)}
.switch-label input:focus-visible + .switch{box-shadow:0 0 0 3px rgba(7,254,255,.6)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:8px;padding:10px 16px;font:inherit;font-size:14px;font-weight:700;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:focus-visible{outline:3px solid var(--aqua);outline-offset:2px}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-primary{background:var(--aqua);color:var(--navy)}
.btn-primary:hover{box-shadow:inset 0 0 0 2px var(--navy)}
.btn-dark{background:var(--navy);color:#fff}
.btn-outline{background:#fff;color:var(--navy);border:1.5px solid var(--n12)}
.btn-outline:hover{border-color:var(--navy)}
.btn-ghost{background:transparent;color:var(--n80);border:1.5px solid transparent}
.btn-ghost:hover{border-color:var(--n12)}
.btn-danger{background:var(--error);color:#fff}
.btn-sm{padding:7px 12px;font-size:13px}
.btn-lg{padding:16px;font-size:16px}
.btn-full{width:100%}
.link{background:none;border:none;color:var(--navy);text-decoration:underline;cursor:pointer;font:inherit;font-size:13px}
.actions{display:flex;gap:8px;flex-wrap:wrap}

/* preview */
.preview-head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.preview-head h2{margin:0}
.preview{background:#fff;border:1px solid var(--n12);border-radius:12px;padding:32px 24px;margin-bottom:16px;overflow-x:auto;min-height:160px}
.howto{margin-top:16px;font-size:14px}
.howto summary{cursor:pointer;font-weight:700}
.howto ol{padding-left:20px;margin:8px 0 0}
.howto li{margin-bottom:4px}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.g-card{display:flex;flex-direction:column;align-items:stretch;text-align:left;background:#fff;border:1.5px solid var(--n12);border-radius:12px;padding:8px;cursor:pointer;font:inherit;color:var(--navy)}
.g-card:hover{border-color:var(--n60)}
.g-card.active{border-color:var(--navy);box-shadow:inset 0 0 0 1px var(--navy)}
.g-card:focus-visible{outline:3px solid var(--aqua)}
.g-card b{font-size:14px;margin-top:8px;padding:0 4px}
.g-card small{font-size:12px;color:var(--n60);padding:0 4px 4px}
.g-thumb{height:120px;overflow:hidden;border-radius:8px;background:var(--n03);position:relative;pointer-events:none}
.g-inner{transform:scale(.42);transform-origin:top left;width:238%;padding:20px}

/* lists */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;margin-top:16px}
.sig-card,.kit-card{margin:0;display:flex;flex-direction:column;gap:12px}
.sig-head small{color:var(--n60);font-size:12px}
.mini-preview{border:1px solid var(--n12);border-radius:8px;padding:12px;overflow:hidden;max-height:180px;zoom:.7}
.kit-swatch{display:flex;gap:8px;align-items:center}
.kit-swatch span{width:32px;height:32px;border-radius:8px;border:1px solid var(--n12)}
.kit-logo{max-height:32px;max-width:100px;margin-left:8px}
.kit-form{max-width:720px}
.danger{border-color:#F3C7C3}

/* toast */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(16px);background:var(--navy);color:#fff;padding:12px 20px;border-radius:8px;font-size:14px;font-weight:500;opacity:0;pointer-events:none;transition:.2s;display:flex;gap:8px;align-items:center;z-index:50;max-width:calc(100vw - 32px)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast .dot{width:8px;height:8px;border-radius:50%;background:var(--aqua);flex-shrink:0}
.toast.error .dot{background:#F97066}

/* admin */
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th,table.data td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--n12);vertical-align:middle}
table.data th{font-size:12px;color:var(--n60);font-weight:700}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-bottom:16px}
.stat{background:#fff;border:1px solid var(--n12);border-radius:12px;padding:16px}
.stat b{display:block;font-size:24px}
.stat span{font-size:13px;color:var(--n60)}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:2px 8px;border-radius:20px;background:var(--n06)}
.badge.admin{background:var(--navy);color:var(--aqua)}
.badge.off{background:#FEE4E2;color:var(--error)}
.table-wrap{overflow-x:auto}