/* Sui Gas Bill Online — shared stylesheet. Blue #0b5cad, mobile-first. */
:root{
  --blue:#0b5cad; --blue-dark:#084a8a; --blue-darker:#063763; --blue-light:#eaf3fb;
  --blue-mid:#1a84dc; --ink:#1a2a3a; --muted:#5a6b7a; --line:#c9e0f2; --bg:#f2f7fc;
  --card:#ffffff; --amber:#b45309; --amber-bg:#fef6e3; --red:#b91c1c; --red-bg:#fdf0f0;
  --green:#0a7d28; --green-bg:#eefaf0; --radius:14px;
  --shadow:0 6px 24px rgba(8,74,138,.10); --shadow-sm:0 2px 8px rgba(8,74,138,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px}
img{max-width:100%}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
h1{font-size:1.65rem;line-height:1.25;color:var(--blue-darker)}
h2{color:var(--blue-darker);font-size:1.3rem;margin:26px 0 10px}
h3{color:var(--blue-dark);font-size:1.08rem;margin:20px 0 8px}
p{margin:0 0 12px}
ul,ol{margin:0 0 14px;padding-left:22px}
li{margin-bottom:6px}
table{border-collapse:collapse;width:100%;margin:14px 0;background:#fff;font-size:.95rem}
th,td{border:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
th{background:var(--blue);color:#fff;font-weight:700}
tr:nth-child(even) td{background:#f7fbff}
.small{font-size:.88rem;color:var(--muted)}
.note{background:var(--amber-bg);border:1px solid #f0dc9e;border-radius:10px;padding:12px 14px;margin:16px 0;font-size:.95rem}
.okbox{background:var(--green-bg);border:1px solid #bfe6c8;border-radius:10px;padding:12px 14px;margin:16px 0}
.errbox{background:var(--red-bg);border:1px solid #f0c1c1;border-radius:10px;padding:12px 14px;margin:16px 0;color:var(--red)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:18px;margin:16px 0}
.grid{display:grid;gap:14px}
@media(min-width:760px){.grid.cols2{grid-template-columns:1fr 1fr}.grid.cols3{grid-template-columns:1fr 1fr 1fr}}
.linkcard{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow-sm)}
.linkcard:hover{text-decoration:none;border-color:var(--blue-mid)}
.linkcard b{color:var(--blue-darker);display:block;margin-bottom:4px}
.linkcard span{color:var(--muted);font-size:.92rem}

/* Header */
.site-header{background:linear-gradient(135deg,var(--blue-darker),var(--blue) 60%,var(--blue-mid));color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(0,0,0,.18)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.12rem}
.logo:hover{text-decoration:none}
.logo .flame{background:#fff;width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:1.25rem;flex:0 0 auto}
.logo small{display:block;font-weight:600;font-size:.66rem;opacity:.85;letter-spacing:.4px;text-transform:uppercase}
.nav-toggle{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);color:#fff;border-radius:9px;padding:8px 13px;font-size:1rem;cursor:pointer}
.main-nav{display:none;padding:0 0 12px}
.main-nav.open{display:block}
.main-nav a{display:block;color:#fff;padding:9px 10px;border-radius:8px;font-weight:600;font-size:.96rem}
.main-nav a:hover{background:rgba(255,255,255,.14);text-decoration:none}
@media(min-width:860px){.nav-toggle{display:none}.main-nav{display:flex;gap:2px;padding:0;flex-wrap:wrap;justify-content:flex-end}.main-nav a{display:inline-block;padding:8px 10px}}

/* Hero / checker */
.hero{background:linear-gradient(160deg,var(--blue-light),#fff 65%);border-bottom:1px solid var(--line);padding:26px 0 30px}
.hero h1{margin:0 0 8px}
.hero .lead{color:var(--muted);margin:0 0 18px;font-size:1.02rem;max-width:660px}
.checker{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;max-width:660px}
.checker h2{margin:0 0 4px;font-size:1.15rem}
.checker .sub{margin:0 0 14px;color:var(--muted);font-size:.92rem}
.tabs{display:flex;gap:8px;margin-bottom:14px}
.tab-btn{flex:1;padding:11px 8px;border-radius:10px;border:2px solid var(--blue);background:#fff;color:var(--blue);font-weight:700;font-size:.98rem;cursor:pointer}
.tab-btn[aria-selected="true"]{background:var(--blue);color:#fff}
.tab-panel{display:none}
.tab-panel.active{display:block}
.checker label{font-weight:700;display:block;margin-bottom:6px;font-size:.95rem}
.input-row{display:flex;gap:10px;flex-wrap:wrap}
.input-row input[type="text"],.input-row input[type="tel"]{flex:1 1 220px;font-size:1.12rem;padding:13px 14px;border:2px solid #b4d4ee;border-radius:10px;outline:none;letter-spacing:1px;background:#fbfdff}
.input-row input:focus{border-color:var(--blue);background:#fff}
.btn{display:inline-block;background:var(--blue);color:#fff;font-weight:700;border:none;border-radius:10px;padding:13px 22px;font-size:1.02rem;cursor:pointer;text-align:center}
.btn:hover{background:var(--blue-dark);text-decoration:none}
.btn.secondary{background:#fff;color:var(--blue);border:2px solid var(--blue)}
.btn.big{width:100%;font-size:1.1rem;padding:15px}
.btn.green{background:#159947}
.btn.green:hover{background:#0f7a37}
.summary-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:6px 18px;max-width:660px;margin:0 auto}
.summary-card table{margin:8px 0}
.summary-card td:first-child{font-weight:700;color:var(--blue-darker);width:46%}
.summary-card td:last-child{text-align:right}
.spinner{width:44px;height:44px;border:5px solid var(--line);border-top-color:var(--blue);border-radius:50%;margin:18px auto;animation:spin 0.9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.help-ur{margin-top:12px;font-size:.93rem;color:var(--muted);background:var(--blue-light);border-radius:8px;padding:9px 12px}
.steps{display:grid;gap:12px;margin:16px 0}
@media(min-width:760px){.steps{grid-template-columns:1fr 1fr 1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}
.step .n{display:inline-flex;background:var(--blue);color:#fff;width:26px;height:26px;border-radius:50%;align-items:center;justify-content:center;font-weight:800;margin-bottom:8px}
.captcha-img{border:2px solid var(--line);border-radius:8px;background:#fff;padding:6px;display:inline-block;line-height:0}
.captcha-img img{width:220px;max-width:100%;height:auto;image-rendering:auto}
.calc-out table td:last-child{text-align:right;font-weight:600}
input[type="number"],select{font-size:1.05rem;padding:11px 12px;border:2px solid #b4d4ee;border-radius:10px;outline:none;background:#fbfdff;width:100%}
input[type="number"]:focus,select:focus{border-color:var(--blue);background:#fff}
.field{margin-bottom:14px}
.field label{font-weight:700;display:block;margin-bottom:6px;font-size:.95rem}

/* FAQ */
details.faq{background:#fff;border:1px solid var(--line);border-radius:10px;margin:10px 0;padding:4px 16px}
details.faq summary{font-weight:700;cursor:pointer;padding:10px 0;color:var(--blue-darker)}
details.faq p{padding-bottom:12px}

/* Footer */
.site-footer{background:var(--blue-darker);color:#dbeaf7;margin-top:44px;padding:34px 0 26px;font-size:.93rem}
.site-footer a{color:#fff}
.footer-grid{display:grid;gap:18px}
@media(min-width:760px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.site-footer h4{color:#fff;margin:0 0 10px;font-size:1rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:7px}
.footer-base{border-top:1px solid rgba(255,255,255,.18);margin-top:22px;padding-top:16px;font-size:.85rem;color:#a9c6de}

/* Cookie consent (v2: Accept All / Reject All / Customize) */
.cookie-banner{position:fixed;left:12px;right:12px;bottom:12px;background:#fff;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:12px;box-shadow:0 12px 40px rgba(6,55,99,.28);padding:16px 18px;z-index:90;display:none;max-width:680px;margin:0 auto;max-height:88vh;overflow-y:auto}
.cookie-banner.show{display:block}
.cookie-banner p{margin:0 0 10px;font-size:.92rem}
.cb-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.cb-actions .btn{padding:10px 18px;font-size:.95rem}
.btn.ghost{background:#eef4fa;color:var(--blue-dark);border:2px solid transparent}
.btn.ghost:hover{background:#ddebf8;text-decoration:none}
.cb-prefs{border-top:1px solid var(--line);margin-top:12px;padding-top:6px}
.cb-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid #eef4fa}
.cb-row:last-of-type{border-bottom:none}
.cb-on{font-size:.8rem;font-weight:700;color:var(--green);background:var(--green-bg);border:1px solid #bfe6c8;border-radius:20px;padding:4px 10px;white-space:nowrap}
.switch{position:relative;display:inline-block;width:48px;height:27px;flex:0 0 auto}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:#c3d5e6;border-radius:27px;cursor:pointer;transition:.2s}
.switch span:before{content:"";position:absolute;width:21px;height:21px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 4px rgba(0,0,0,.25)}
.switch input:checked+span{background:var(--blue)}
.switch input:checked+span:before{transform:translateX(21px)}
.switch input:focus-visible+span{outline:2px solid var(--blue-mid);outline-offset:2px}
@media(max-width:560px){.cookie-banner{position:static;margin:12px;max-height:none;box-shadow:var(--shadow-sm);padding:13px 14px}.cb-actions .btn{flex:1 1 30%;padding:10px 6px;font-size:.9rem}}

/* Breadcrumbs */
.crumbs{background:#fff;border-bottom:1px solid var(--line);font-size:.86rem;color:var(--muted)}
.crumbs .wrap{padding-top:8px;padding-bottom:8px}
.crumbs a{color:var(--blue);font-weight:600}
.crumbs .sep{margin:0 6px;color:#9db8cf}
.crumbs [aria-current]{color:var(--ink);font-weight:600}

/* Trust strip + safety note (homepage) */
.trustbar{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:16px;font-size:.9rem;color:var(--blue-darker)}
.trustbar span{display:inline-flex;align-items:center;gap:6px}
.trustbar b{color:var(--green)}
.safety{margin:16px 0 0;background:#fdf6ec;border:1px solid #f0dc9e;border-radius:10px;padding:10px 14px;font-size:.94rem}

/* FAQ accordion polish */
details.faq summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:after{content:"+";font-size:1.25rem;font-weight:800;color:var(--blue);flex:0 0 auto}
details.faq[open ] summary:after{content:"–"}
details.faq[open ]{border-color:var(--blue-mid)}

/* Checker elevation on hero pages */
.hero .checker{border-top:4px solid var(--blue);box-shadow:0 14px 34px rgba(8,74,138,.16)}

/* Footer city row */
.footer-cities{border-top:1px solid rgba(255,255,255,.18);margin-top:20px;padding-top:14px;font-size:.88rem}
.footer-cities b{color:#fff}
.footer-cities a{margin-right:2px}

/* Bill result */
.bill-frame{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;overflow-x:auto}
.bill-frame table{font-size:.9rem}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
@media print{
  .site-header,.site-footer,.cookie-banner,.toolbar,.no-print{display:none!important}
  body{background:#fff}
  .bill-frame{border:none;padding:0}
}