/* Same design tokens as the iristaxfiling.com homepage: dark by default, light on request, pill buttons, rounded cards. */
:root{--bg:#050a1f;--soft:#070e2b;--text:#E6ECFF;--muted:#8E9CC7;--line:#17234d;--p:#6FA3FF;--ph:#2558D6;--btn:#2F6BFF;--ok:#3DD6A0;--err:#FF6B6B;--warn:#FFB454;--dark:#02061a;--card:#0a1438;--code:#030818;color-scheme:dark}
:root[data-theme="light"]{--bg:#fbfbfd;--soft:#f5f5f7;--text:#1d1d1f;--muted:#6e6e73;--line:#e5e5ea;--card:#fff;--p:#0b57d0;--ph:#0058b0;--btn:#0071e3;--ok:#1a7f4b;--err:#c92a2a;--warn:#a15c07;--dark:#0b1230;--code:#0b1230;color-scheme:light}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--text);font:16px/1.5 -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s;min-height:100vh;display:flex;flex-direction:column}
body:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(70% 50% at 78% 0,rgba(47,107,255,.22),transparent 70%),radial-gradient(50% 40% at 8% 20%,rgba(110,70,255,.12),transparent 70%)}
:root[data-theme="light"] body:before{background:radial-gradient(60% 40% at 50% 0,rgba(0,113,227,.07),transparent 70%)}
#app{display:flex;flex-direction:column;flex:1}
a{color:var(--p)}
:focus-visible{outline:2px solid var(--p);outline-offset:3px;border-radius:4px}
h1,h2,h3{margin:0;letter-spacing:-.03em;line-height:1.1}
h1{font-size:clamp(28px,4vw,40px);font-weight:600;margin-bottom:6px}
h2{font-size:20px;font-weight:600;margin-bottom:12px}
h3{font-size:16px;font-weight:600;margin:18px 0 8px}
p{margin:0 0 12px}
.muted{color:var(--muted)}
.small{font-size:13px}
.hidden{display:none!important}
.eyebrow{font-size:13px;font-weight:600;color:var(--p);margin:0 0 10px}

/* header */
.topbar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar .in{max-width:1160px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:24px;min-height:60px;flex-wrap:wrap}
.brand{font-weight:700;font-size:20px;letter-spacing:-.03em;color:var(--text);text-decoration:none}
.brand b{color:var(--p);font-weight:700}.brand i{font-style:normal;font-weight:500;color:var(--muted)}
.topbar nav{display:flex;gap:2px;flex:1;flex-wrap:wrap}
.topbar nav a{color:var(--muted);text-decoration:none;padding:8px 12px;font-size:15px;border-radius:8px;transition:color .15s,background .15s}
.topbar nav a:hover{color:var(--text);background:var(--soft)}
.topbar nav a.on{color:var(--text);background:var(--soft)}
.topbar .who{display:flex;align-items:center;gap:10px;font-size:14px;margin-left:auto}
.pill{background:var(--card);border:1px solid var(--line);color:var(--text);padding:5px 14px;border-radius:999px;text-decoration:none;font-weight:600;font-size:14px}
.linkbtn{background:none;border:0;color:var(--muted);cursor:pointer;font:inherit;padding:6px;text-decoration:underline}
.tgl{min-width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:16px;cursor:pointer}
.tgl:hover{background:var(--soft)}

main{max-width:1160px;width:100%;margin:0 auto;padding:36px 24px 72px;flex:1}
.auth{max-width:480px;margin:4vh auto 0}
.wide{max-width:780px;margin:2vh auto 0}
.center{text-align:center}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px;margin-bottom:18px;box-shadow:0 0 0 1px rgba(111,163,255,.05),0 24px 50px -34px rgba(47,107,255,.35)}
:root[data-theme="light"] .card{box-shadow:0 1px 2px rgba(0,0,0,.04),0 24px 48px -32px rgba(0,0,0,.18)}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.feature{display:flex;flex-direction:column;gap:6px}
.feature .price{color:var(--muted);font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.feature .go{margin-top:auto;padding-top:12px}
.disabled-card{opacity:.75;border-style:dashed}
.hero-card{text-align:center;padding:44px 26px;background:radial-gradient(70% 90% at 50% 0,rgba(47,107,255,.18),transparent 70%),var(--card)}
.hero-card h1{max-width:640px;margin:0 auto 10px}
.hero-card p{max-width:560px;margin:0 auto 18px;color:var(--muted)}
.badge{display:inline-flex;gap:8px;align-items:center;border:1px solid var(--line);background:var(--card);border-radius:999px;padding:4px 14px;font-size:13px;color:var(--muted);margin-bottom:16px}
.badge:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok)}

/* forms */
label{display:block;font-weight:500;font-size:14px;margin:14px 0 6px}
input[type=text],input[type=email],input[type=password],select{width:100%;font:inherit;font-size:16px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 14px;min-height:44px}
input:focus-visible,select:focus-visible{outline:2px solid var(--p);outline-offset:1px}
.code{font-size:28px;letter-spacing:10px;text-align:center;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:14px;margin:12px 0;color:var(--text)}
.check input{margin-top:4px;flex:none;accent-color:var(--btn);width:16px;height:16px}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 24px;border-radius:980px;border:1px solid transparent;background:var(--btn);color:#fff;font:inherit;font-weight:500;cursor:pointer;text-decoration:none;box-shadow:0 1px 2px rgba(0,0,0,.4);transition:background .15s,box-shadow .15s,transform .1s}
.btn:hover{background:#4A80FF;box-shadow:0 0 24px rgba(79,140,255,.4)}
:root[data-theme="light"] .btn:hover{background:#0077ed;box-shadow:none}
.btn:active{transform:translateY(1px)}
.btn.secondary{background:var(--card);color:var(--text);border-color:var(--line);box-shadow:none}
.btn.secondary:hover{background:var(--soft);box-shadow:none}
.btn.small{min-height:34px;padding:0 14px;font-size:13px}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.row.center{justify-content:center}
.stack>*+*{margin-top:12px}

.alert{padding:12px 16px;border-radius:12px;margin:12px 0;font-size:14px;border:1px solid var(--line)}
.alert.bad{background:color-mix(in srgb,var(--err) 12%,var(--card));color:var(--err);border-color:color-mix(in srgb,var(--err) 40%,var(--line))}
.alert.ok{background:color-mix(in srgb,var(--ok) 12%,var(--card));color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,var(--line))}
.alert.info{background:color-mix(in srgb,var(--btn) 12%,var(--card));color:var(--p);border-color:color-mix(in srgb,var(--btn) 40%,var(--line))}
.alert.warn{background:color-mix(in srgb,var(--warn) 12%,var(--card));color:var(--warn);border-color:color-mix(in srgb,var(--warn) 40%,var(--line))}

.drop{border:2px dashed var(--line);border-radius:16px;padding:34px 16px;text-align:center;background:var(--soft);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.over{border-color:var(--p);background:color-mix(in srgb,var(--btn) 8%,var(--soft))}
.drop .name{font-weight:600;margin-top:6px;word-break:break-all}

table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}
td.num,th.num{text-align:right;white-space:nowrap}
.chip{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600;border:1px solid var(--line)}
.chip.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 50%,var(--line));background:color-mix(in srgb,var(--ok) 10%,var(--card))}
.chip.bad{color:var(--err);border-color:color-mix(in srgb,var(--err) 50%,var(--line));background:color-mix(in srgb,var(--err) 10%,var(--card))}
.chip.warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 50%,var(--line));background:color-mix(in srgb,var(--warn) 10%,var(--card))}
.chip.grey{color:var(--muted);background:var(--soft)}
.kpis{display:flex;gap:12px;flex-wrap:wrap}
.kpi{flex:1;min-width:120px;background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.kpi .n{font-size:28px;font-weight:600;letter-spacing:-.03em}
.kpi .l{font-size:12px;color:var(--muted)}
.balance{font-size:40px;font-weight:600;letter-spacing:-.04em;color:var(--p)}
.spinner{display:inline-block;width:14px;height:14px;border:2px solid var(--line);border-top-color:var(--p);border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:8px}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.terms{max-height:200px;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:10px 16px;background:var(--soft);font-size:13px}
.doc{max-width:820px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px 40px}
.doc h2{margin-top:28px}
.doc ol,.doc ul,.terms ul{padding-left:22px;margin:0 0 12px}
.doc li{margin-bottom:6px}
details summary{cursor:pointer;color:var(--p)}
pre{background:var(--code);color:#cfe0ff;padding:14px 16px;border-radius:12px;overflow:auto;font:13px ui-monospace,SFMono-Regular,Menlo,monospace;user-select:all}
footer.site{text-align:center;color:var(--muted);font-size:13px;padding:28px 16px;border-top:1px solid var(--line)}
footer.site a{color:var(--muted)}
.fl{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:8px}
@media (max-width:700px){.topbar .in{gap:10px}.doc{padding:22px}.card{padding:20px}}