:root{
  --bg:#020914;--panel:#06162a;--panel2:#081d36;--line:#0d477b;--line2:#17649f;
  --text:#f5f9ff;--muted:#9ab5d3;--blue:#08a9ff;--blue2:#075fff;--good:#19c6ff;
  --danger:#ff7d87;--shadow:0 12px 40px rgba(0,0,0,.28)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Segoe UI,system-ui,sans-serif;background:
radial-gradient(circle at 70% -10%,#07315b 0,transparent 30%),var(--bg);color:var(--text)}
button,input,select{font:inherit}
button{cursor:pointer}
.app{min-height:100vh;display:grid;grid-template-columns:236px 1fr}
.sidebar{background:linear-gradient(180deg,#031226,#041b31);border-right:1px solid #0b3459;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{padding:18px;border-bottom:1px solid #0b3459}
.logo{width:102px;height:102px;margin:auto;border:2px solid #00b2ff;border-radius:50%;display:grid;place-items:center;
box-shadow:0 0 18px #008dff,0 0 45px rgba(0,130,255,.22),inset 0 0 25px #06365f;
background:radial-gradient(circle,#061d39,#010812);font-size:49px;font-weight:950;font-style:italic;letter-spacing:-.08em}
.logo small{display:block;font-size:10px;letter-spacing:.08em;margin-top:-28px;font-style:normal}
.brand-name{text-align:center;font-weight:900;letter-spacing:.06em;margin-top:9px}
.nav{padding:14px 10px;overflow:auto}
.nav button{width:100%;border:0;background:transparent;color:#b8cce4;text-align:left;padding:11px 12px;border-radius:9px;margin:2px 0;font-weight:700;transition:.18s}
.nav button:hover{background:#0a2949;color:#fff}.nav button.active{background:linear-gradient(90deg,#0c3d70,#092a4c);color:#fff;box-shadow:inset 3px 0 #10a8ff}
.ico{display:inline-block;width:28px;text-align:center;margin-right:4px;font-size:18px}
.sidebar-foot{margin-top:auto;border-top:1px solid #0b3459;padding:15px 18px;text-align:center;color:#7896b7;font-size:12px}
.mini-logo{width:52px;height:52px;font-size:25px}.sidebar-foot .brand-name{font-size:13px}
.main{min-width:0}.topbar{height:158px;padding:27px 28px;border-bottom:1px solid #0b3459;position:relative;overflow:hidden}
.topbar:after{content:"";position:absolute;width:70%;height:150px;right:-10%;top:-80px;border-bottom:1px solid #0a83df;transform:rotate(-19deg);box-shadow:0 35px 0 rgba(0,137,255,.15),0 70px 0 rgba(0,137,255,.08)}
.toprow{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;position:relative;z-index:1}
h1{font-size:35px;line-height:1;margin:0;font-weight:950;letter-spacing:.02em}
.subtitle{font-size:17px;font-weight:800;margin-top:7px}.version{background:linear-gradient(90deg,#0963ec,#0879ff);padding:5px 12px;border-radius:8px;margin-left:7px;font-size:13px}
.tagline{margin:9px 0 0;color:#9ec9ef}.mode{border:1px solid #18517f;background:#071a30;padding:9px 13px;border-radius:10px;color:#cfe4f8;font-weight:700}
.content{max-width:1280px;padding:22px 28px 50px;margin:auto}
.hero{border:1px solid #0b4c86;border-radius:14px;padding:20px;background:linear-gradient(115deg,#061b34,#031124);
display:grid;grid-template-columns:1.3fr .8fr;gap:22px;box-shadow:var(--shadow)}
.hero h2{color:#91c9f7;font-size:19px;margin:0}.hero-title{font-size:36px;line-height:1.02;font-weight:950}.hero-blue{color:#08a6ff}
.hero p{color:#bfd2e7;line-height:1.5;max-width:650px}.checks{display:grid;gap:8px;align-content:center}
.check{display:flex;align-items:center;gap:10px;color:#e0edfb}.check i{width:26px;height:26px;border-radius:50%;background:#08a8ff;color:#001526;display:grid;place-items:center;font-style:normal;font-weight:950}
.section-title{font-size:21px;margin:22px 2px 11px}.cards{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.calc-card{border:1px solid #0a4b85;background:linear-gradient(145deg,#071d37,#061327);border-radius:11px;padding:15px;min-height:125px;color:#fff;text-align:center;transition:.2s}
.calc-card:hover{transform:translateY(-2px);border-color:#159fff}.calc-card.active{background:linear-gradient(145deg,#0648eb,#006cff);box-shadow:0 7px 22px rgba(0,87,255,.22)}
.bigico{font-size:31px}.calc-card h3{margin:6px 0 2px;font-size:15px}.calc-card p{margin:0;color:#c8ddf2;font-size:12px;line-height:1.35}
.workspace,.page{margin-top:18px;border:1px solid #0a4b85;border-radius:13px;padding:16px;background:linear-gradient(145deg,#03172b,#031124);box-shadow:var(--shadow)}
.workspace-head{display:flex;gap:10px}.workspace-head h2{font-size:18px;margin:0}.workspace-head p{font-size:13px;color:#8fb0d1;margin:3px 0}
.workspace-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:14px}.form-panel,.result-panel,.info,.mini{border:1px solid #0b477d;border-radius:12px;padding:18px;background:linear-gradient(150deg,#061b32,#041226)}
.result-panel{border-color:#008cff;box-shadow:0 0 18px rgba(0,132,255,.08);min-height:260px}
label{display:block;font-size:13px;font-weight:800;margin:0 0 7px;color:#dceafa}.field{margin-bottom:13px}
input,select{width:100%;padding:11px 12px;border-radius:8px;border:1px solid #164975;background:#071e37;color:#fff}
input:focus,select:focus{outline:none;border-color:#11a9ff;box-shadow:0 0 0 2px rgba(17,169,255,.1)}
.button-row{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:stretch}.button-row .secondary{min-width:82px}.button-row .primary{width:100%}
.primary{width:100%;padding:12px;border:0;border-radius:8px;color:#fff;font-weight:850;background:linear-gradient(90deg,#0ba8ff,#075fff)}
.secondary{padding:10px 12px;border:1px solid #18578f;border-radius:8px;color:#d8e8f8;background:#06182c;font-weight:750}
.danger{border-color:#71303a;color:#ffb0b7}.full{width:100%}.result-label{color:#22b8ff;font-weight:850}.answer{font-size:31px;font-weight:950;color:#bce9ff;margin:7px 0}
.steps{border-top:1px solid #14588d;padding-top:12px;margin-top:12px;color:#d1e2f5;font-size:13px;line-height:1.7}
.takeaway{margin-top:13px;padding:11px;border:1px solid #0876bc;border-radius:8px;background:#062540;color:#a9d9f8;font-size:12px;line-height:1.45}
.bottom-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:14px;margin-top:14px}.mini{padding:15px}
.history-row{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #0a3154;padding:10px 0;font-size:12px}
.history-row:first-child{border-top:0}.history-row b{color:#72d3ff}.small{font-size:12px;color:#91aac4;line-height:1.5}
.error{color:var(--danger);font-size:12px;font-weight:750;margin-top:8px}.hidden{display:none!important}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.toolbar{display:flex;gap:9px;margin:12px 0}.toolbar input{flex:1}
.star{background:transparent;border:0;color:#3dc1ff;font-size:21px;padding:0}.badge{display:inline-block;padding:3px 7px;border-radius:999px;background:#08345b;color:#8ed8ff;font-size:10px;font-weight:850}
.practice{border:1px solid #0c4e84;border-radius:10px;padding:14px;background:#061a31}.practice h3{margin:0 0 5px}
.notice{padding:12px;border-left:3px solid #08a8ff;background:#061b31;color:#bcd4eb;border-radius:6px;font-size:12px;line-height:1.5}
.toast{position:fixed;right:20px;bottom:20px;background:#071e36;border:1px solid #1485c8;padding:12px 15px;border-radius:9px;box-shadow:var(--shadow);display:none;color:#dff3ff;z-index:10}
@media(max-width:1050px){.cards{grid-template-columns:repeat(3,1fr)}.hero{grid-template-columns:1fr}.checks{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.app{grid-template-columns:1fr}.sidebar{display:none}.topbar{height:auto}.toprow{flex-direction:column}.content{padding:16px}.workspace-grid,.bottom-grid,.grid2{grid-template-columns:1fr}}
@media(max-width:470px){.cards{grid-template-columns:1fr 1fr}.hero-title{font-size:29px}.cards .calc-card:last-child{grid-column:span 2}}

.logo-img{width:116px;height:116px;margin:auto;border-radius:50%;overflow:hidden;
  filter:drop-shadow(0 0 10px rgba(0,150,255,.75));}
.logo-img img{width:100%;height:100%;object-fit:cover;display:block}
.logo-img.mini-logo{width:58px;height:58px}
.dashboard-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:14px;margin-top:18px}
.dashboard-layout .workspace{margin-top:0}
.side-stack{display:grid;gap:14px;align-content:start}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.stat{border:1px solid #0b4d86;background:#061a31;border-radius:8px;padding:11px;text-align:center}
.stat strong{display:block;font-size:20px;color:#d9f2ff}.stat span{font-size:10px;color:#8eabc9}
.side-card{border:1px solid #0b4d86;border-radius:12px;padding:14px;background:linear-gradient(145deg,#061b32,#041226)}
.side-card h3{margin:0 0 10px;font-size:15px}.side-list{display:grid;gap:7px}
.side-item{display:flex;align-items:center;justify-content:space-between;gap:8px;border:1px solid #0b416e;background:#061a30;border-radius:8px;padding:9px;font-size:11px}
.side-item b{color:#bde9ff}.side-item small{display:block;color:#7fa0c1;margin-top:2px}
.side-item .star{flex:0 0 auto}
.search-mini{width:100%;margin-bottom:9px;padding:9px;border:1px solid #164975;background:#071e37;color:#fff;border-radius:8px}
.how{float:right;border:1px solid #17649f;background:#06182d;color:#9fdcff;border-radius:8px;padding:6px 9px;font-size:11px}
.footerbar{border-top:1px solid #0b3459;padding:8px 14px;color:#7798b9;font-size:10px;display:flex;justify-content:space-between;gap:10px}
.mode-toggle{color:#ccecff}
@media(max-width:1150px){.dashboard-layout{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.side-stack{grid-template-columns:1fr}.logo-img{width:90px;height:90px}}

.engine-panel{margin-top:14px;border:1px solid #0a4b85;border-radius:12px;padding:14px;background:#04162a}
.validation-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:9px}
.validation-pill{border:1px solid #16517f;border-radius:999px;padding:5px 9px;font-size:10px;color:#9fc9e9;background:#061b31}
.validation-pill.ok{border-color:#087d9e;color:#7eeaff}
.validation-pill.warn{border-color:#795b20;color:#ffd78a}
.rounding{display:flex;gap:8px;align-items:center;margin-top:10px}.rounding select{width:auto;min-width:110px;padding:7px}
.warning-box{margin-top:10px;border:1px solid #77561e;background:#251b08;color:#ffd88a;border-radius:8px;padding:10px;font-size:11px;line-height:1.5}
.success-box{margin-top:10px;border:1px solid #087a9d;background:#06273a;color:#aeeeff;border-radius:8px;padding:10px;font-size:11px;line-height:1.5}
.test-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:12px}
.test-item{border:1px solid #0b416e;background:#061a30;border-radius:8px;padding:10px;font-size:11px}
.test-item b{display:block;margin-bottom:3px}
@media(max-width:600px){.test-grid{grid-template-columns:1fr}}

.qa-banner{margin:14px 0;border:1px solid #176aa3;background:linear-gradient(135deg,#061b32,#041326);border-radius:12px;padding:14px}
.qa-head{display:flex;justify-content:space-between;align-items:center;gap:10px}.qa-head h3{margin:0;font-size:15px}
.qa-badge{border:1px solid #0b89b4;color:#9feaff;border-radius:999px;padding:5px 9px;font-size:10px}
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:11px}
.qa-card{border:1px solid #0c416c;background:#06192e;border-radius:8px;padding:10px}.qa-card strong{display:block;font-size:18px}
.qa-card span{font-size:10px;color:#86a7c6}.qa-card.pass{border-color:#087c9e}.qa-card.warn{border-color:#795b20}
.edge-note{font-size:10px;color:#8eabc7;line-height:1.45;margin-top:8px}
.audit-block{margin-top:10px;border-top:1px solid #10466f;padding-top:9px;font-size:10px;color:#86aac9}
.audit-block b{color:#c9ecff}
.qa-table{width:100%;border-collapse:collapse;margin-top:10px;font-size:10px}.qa-table th,.qa-table td{padding:7px;border-bottom:1px solid #103b60;text-align:left}.qa-table th{color:#9edbff}
.pass-text{color:#7ff0c7}.fail-text{color:#ff9d9d}
@media(max-width:700px){.qa-grid{grid-template-columns:1fr}}

/* v1.0 accessibility + UX polish */
:focus-visible{outline:2px solid #38c8ff;outline-offset:2px}
button,.tab,input,select{min-height:42px}
button[disabled]{opacity:.55;cursor:not-allowed}
.skip-link{position:fixed;left:12px;top:-60px;z-index:9999;background:#0b8fd0;color:#fff;padding:10px 14px;border-radius:8px;font-weight:700}
.skip-link:focus{top:12px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.live-region{position:fixed;left:12px;bottom:12px;z-index:9998;max-width:420px;pointer-events:none}
.toast{border:1px solid #168bc0;background:#061a31;color:#d9f6ff;border-radius:9px;padding:10px 13px;box-shadow:0 8px 30px rgba(0,0,0,.35);font-size:12px}
.empty-state{text-align:center;padding:20px;color:#7899b8;border:1px dashed #16466e;border-radius:10px}
.empty-state strong{display:block;color:#bfe8ff;margin-bottom:4px}
.form-hint{font-size:10px;color:#789bb9;margin-top:4px;line-height:1.4}
.input-ok{border-color:#087b9f!important}
.input-error{border-color:#b45a5a!important}
.confirm-box{display:flex;align-items:flex-start;gap:8px;margin-top:11px;padding:10px;border:1px solid #174b72;border-radius:8px;background:#06192e;font-size:11px;color:#a8c8df}
.confirm-box input{width:auto;min-height:auto;margin-top:2px}
.shortcut-box{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.shortcut{border:1px solid #174a70;background:#061a30;border-radius:7px;padding:7px 9px;font-size:10px;color:#9bc1de}
.release-note{border:1px solid #0a759b;background:#062336;color:#aeeeff;border-radius:10px;padding:12px;margin-bottom:13px;font-size:11px;line-height:1.5}
@media(prefers-reduced-motion:reduce){
 *{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* ZELVAREN v1.0 RELEASE */
.release-ribbon{display:inline-flex;align-items:center;gap:6px;border:1px solid #18a0d8;
border-radius:999px;padding:5px 10px;color:#c9f3ff;background:#05243a;font-size:10px;font-weight:800;letter-spacing:.04em}
.final-checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:12px}
.final-check{border:1px solid #0d4d78;background:#061a30;border-radius:9px;padding:10px;font-size:10px;color:#a7c8df}
.final-check b{display:block;color:#bff0ff;margin-bottom:3px}
.release-card{border:1px solid #1385b1!important;background:linear-gradient(145deg,#061d32,#041326)!important}
@media(max-width:600px){.final-checklist{grid-template-columns:1fr}}

/* v1.2 deployment / UX enhancements */
.skip-link{position:fixed;left:12px;top:12px;z-index:100;background:#fff;color:#001526;padding:9px 12px;border-radius:8px;transform:translateY(-150%);font-weight:800}.skip-link:focus{transform:translateY(0)}
.mobile-nav{display:none}
.release-note{margin-top:18px;border:1px solid #0b4c86;border-radius:12px;padding:14px 16px;background:linear-gradient(90deg,#061b34,#041226);color:#cfe4f7;line-height:1.5;font-size:12px}.release-ribbon{display:inline-block;background:#0879ff;color:#fff;padding:5px 9px;border-radius:7px;font-weight:900;font-size:10px;letter-spacing:.05em}
.form-hint{font-size:10px;color:#7899b9;margin-top:5px;line-height:1.35}.input-ok{border-color:#19c6ff!important;box-shadow:0 0 0 2px rgba(25,198,255,.08)!important}.input-error{border-color:#ff6f7a!important;box-shadow:0 0 0 2px rgba(255,111,122,.08)!important}
.qa-table{width:100%;border-collapse:collapse;margin-top:12px;font-size:11px}.qa-table th,.qa-table td{border:1px solid #0b416e;padding:7px;text-align:left}.qa-table th{color:#9fd9ff;background:#061b31}.pass-text{color:#54dc9b;font-weight:900}.fail-text{color:#ff8c96;font-weight:900}.shortcut-box{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:13px}.shortcut{padding:5px 8px;border:1px solid #18578f;border-radius:6px;background:#06182c;color:#bfe4ff;font-size:11px;font-weight:800}.engine-panel,.qa-banner{border:1px solid #0b4d86;border-radius:12px;padding:15px;background:linear-gradient(145deg,#061b32,#041226)}.rounding{display:grid;grid-template-columns:1fr 180px;gap:10px;align-items:center;margin-top:12px}.validation-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.validation-pill{padding:5px 8px;border-radius:999px;font-size:10px;font-weight:850}.validation-pill.ok{background:#073e45;color:#73e7cf;border:1px solid #0a746e}.qa-banner{margin-top:13px}.qa-head{display:flex;justify-content:space-between;align-items:center;gap:10px}.qa-head h3{margin:0}.qa-badge{font-size:10px;font-weight:900;padding:5px 8px;border-radius:999px;background:#063d62;color:#7fd8ff}.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:11px}.qa-card{border:1px solid #0b416e;border-radius:8px;padding:10px;text-align:center;background:#061a30}.qa-card strong{display:block;font-size:20px}.qa-card span{font-size:10px;color:#8eabc9}.qa-card.pass strong{color:#5be0a2}.qa-card.warn strong{color:#ffd36e}.edge-note{margin-top:10px;padding:10px;border:1px solid #0b416e;border-radius:8px;color:#9fc6e5;font-size:11px}.footerbar{position:relative}
@media(max-width:760px){.mobile-nav{display:flex;gap:8px;padding:10px 16px;border-bottom:1px solid #0b3459;background:#031226;overflow:auto}.mobile-nav button{flex:0 0 auto;border:1px solid #18517f;background:#071a30;color:#cfe4f8;padding:8px 10px;border-radius:8px;font-weight:800;font-size:11px}.dashboard-layout{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr}.rounding{grid-template-columns:1fr}.qa-grid{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:470px){.qa-grid{grid-template-columns:1fr}.button-row{grid-template-columns:1fr}.topbar{padding:20px 16px}.content{padding:12px}.workspace,.page{padding:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.calc-card{transition:none}.toast{transition:none}}