:root{
  --blue:#0052ff;
  --blue-dark:#0043d1;
  --ink:#0a0b0d;
  --slate:#5b616e;
  --line:#e3e8ef;
  --bg:#ffffff;
  --bg-alt:#f5f8ff;
  --green:#05b169;
  --red:#cf202f;
  --radius:14px;
  --maxw:1180px;
  font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.45;-webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;border:none;cursor:pointer;padding:13px 22px;border-radius:100px;transition:.18s ease}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark)}
.btn-primary:disabled{background:#9bb6ff;cursor:not-allowed}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:#eef1f6}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{opacity:.88}
.btn-block{width:100%}
.btn-lg{padding:15px 26px;font-size:16px}

/* logo */
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:20px;letter-spacing:-.5px}
.logo .mark{width:26px;height:26px;border-radius:50%;border:3px solid var(--blue);position:relative}
.logo .mark::after{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--blue)}

/* nav */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
nav{display:flex;align-items:center;gap:28px;height:68px}
.nav-links{display:flex;gap:22px;font-size:15px;font-weight:500;color:#1f2a37}
.nav-links a:hover{color:var(--blue)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-right .signin{font-weight:600;font-size:15px;padding:10px 16px;border-radius:100px}
.nav-right .signin:hover{background:#eef1f6}
@media(max-width:880px){.nav-links{display:none}}

/* ---------- AUTH PAGES ---------- */
.auth-page{min-height:100vh;display:flex;flex-direction:column}
.auth-top{border-bottom:1px solid var(--line)}
.auth-top .wrap{display:flex;align-items:center;height:68px}
.auth-top .help{margin-left:auto;font-size:14px;color:var(--slate);font-weight:500}
.auth-main{flex:1;display:flex;align-items:flex-start;justify-content:center;padding:48px 24px}
.auth-card{width:100%;max-width:440px}
.auth-card h1{font-size:30px;letter-spacing:-1px;margin-bottom:8px}
.auth-card .sub{color:var(--slate);font-size:15px;margin-bottom:28px}

/* progress */
.progress{display:flex;gap:6px;margin-bottom:32px}
.progress span{flex:1;height:4px;border-radius:4px;background:var(--line)}
.progress span.done{background:var(--blue)}

/* fields */
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field select{width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:12px;font-size:15px;outline:none;background:#fff;color:var(--ink);font-family:inherit}
.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,82,255,.15)}
.field input.bad{border-color:var(--red)}
.field .hint{font-size:13px;color:var(--slate);margin-top:6px}
.field .err{font-size:13px;color:var(--red);margin-top:6px;display:none}
.field.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field.row2 .err{grid-column:1/-1}

.pw-wrap{position:relative}
.pw-wrap .toggle{position:absolute;right:14px;top:50%;transform:translateY(-50%);cursor:pointer;font-size:13px;color:var(--blue);font-weight:600;user-select:none}

/* password rules */
.rules{list-style:none;margin:10px 0 0;font-size:13px}
.rules li{display:flex;align-items:center;gap:8px;color:var(--slate);margin-bottom:5px}
.rules li::before{content:"○";color:var(--line);font-size:14px}
.rules li.ok{color:var(--green)}
.rules li.ok::before{content:"✓";color:var(--green)}

/* code inputs */
.code-row{display:flex;gap:10px;justify-content:space-between;margin:8px 0 4px}
.code-row input{width:52px;height:60px;text-align:center;font-size:26px;font-weight:700;border:1px solid var(--line);border-radius:12px;outline:none}
.code-row input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,82,255,.15)}

.demo-note{background:#fff7e6;border:1px solid #ffe1a3;color:#8a6100;font-size:13px;padding:11px 14px;border-radius:10px;margin-bottom:20px}
.alt{text-align:center;font-size:14px;color:var(--slate);margin-top:22px}
.alt a{color:var(--blue);font-weight:600}
.banner-err{background:#fdecec;border:1px solid #f6c4c4;color:#a11;font-size:14px;padding:12px 14px;border-radius:10px;margin-bottom:18px;display:none}
.checkline{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--slate);margin-top:8px}
.checkline input{margin-top:3px}

.step{display:none}
.step.active{display:block}

/* ---------- DASHBOARD ---------- */
.dash{background:var(--bg-alt);min-height:100vh}
.dash-nav{background:#fff;border-bottom:1px solid var(--line)}
.dash-nav .wrap{display:flex;align-items:center;height:66px;gap:26px}
.dash-nav .links{display:flex;gap:22px;font-size:15px;font-weight:500;color:#1f2a37}
.dash-nav .links a:hover{color:var(--blue)}
.dash-nav .right{margin-left:auto;display:flex;align-items:center;gap:14px}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;cursor:pointer}
.dash-body{padding:34px 0 80px}
.dash-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;margin-top:24px}
@media(max-width:880px){.dash-grid{grid-template-columns:1fr}.dash-nav .links{display:none}}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.bal-label{color:var(--slate);font-size:14px}
.bal{font-size:42px;letter-spacing:-1.5px;font-weight:700;margin:6px 0}
.bal-chg{font-weight:600}
.quick{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.holding{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.holding:last-child{border-bottom:none}
.holding .coin-ic{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;flex:none}
.holding .nm{flex:1}
.holding .nm b{display:block}.holding .nm span{font-size:13px;color:var(--slate)}
.holding .val{text-align:right}.holding .val b{display:block}
.pos{color:var(--green);font-weight:600}.neg{color:var(--red);font-weight:600}
.section-h{font-size:18px;font-weight:700;margin-bottom:6px}
.welcome-pill{display:inline-block;background:#e9f0ff;color:var(--blue);font-weight:600;font-size:13px;padding:6px 12px;border-radius:100px;margin-bottom:14px}

/* activity feed */
.act{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
.act:last-child{border-bottom:none}
.act .ai{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none;background:var(--bg-alt)}
.act .at{flex:1}.act .at b{display:block;font-size:14px}.act .at span{font-size:12px;color:var(--slate)}
.act .av{text-align:right;font-size:14px;font-weight:600}
.empty{color:var(--slate);font-size:14px;padding:14px 0}

/* ---------- MODAL ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(10,11,13,.55);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:20px;width:100%;max-width:430px;padding:26px;box-shadow:0 30px 70px -20px rgba(0,0,0,.45);position:relative}
.modal h3{font-size:21px;letter-spacing:-.5px;margin-bottom:4px}
.modal .msub{color:var(--slate);font-size:14px;margin-bottom:20px}
.modal .x{position:absolute;top:20px;right:22px;cursor:pointer;font-size:22px;color:var(--slate);line-height:1;border:none;background:none}
.modal .x:hover{color:var(--ink)}
.amt-wrap{text-align:center;padding:18px 0 6px}
.amt-wrap .cur{font-size:40px;font-weight:700;letter-spacing:-1px;color:var(--slate)}
.amt-wrap input{font-size:46px;font-weight:700;letter-spacing:-1.5px;border:none;outline:none;width:60%;text-align:left;color:var(--ink);font-family:inherit;background:none}
.amt-wrap input::placeholder{color:#c7ccd6}
.avail{text-align:center;font-size:13px;color:var(--slate);margin-bottom:16px}
.mselect{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font-size:15px;font-family:inherit;background:#fff;margin-bottom:12px;outline:none}
.mselect:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,82,255,.15)}
.mlabel{font-size:13px;font-weight:600;color:var(--slate);margin:4px 0 7px}
.minput{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font-size:15px;font-family:inherit;outline:none;margin-bottom:6px}
.minput:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,82,255,.15)}
.estimate{background:var(--bg-alt);border-radius:12px;padding:13px 16px;font-size:14px;margin:8px 0 4px}
.estimate .row{display:flex;justify-content:space-between;padding:3px 0;color:var(--slate)}
.estimate .row b{color:var(--ink)}
.merr{color:var(--red);font-size:13px;margin:8px 0;display:none}
.chips{display:flex;gap:8px;justify-content:center;margin-bottom:14px}
.chip{padding:7px 14px;border-radius:100px;background:var(--bg-alt);font-size:13px;font-weight:600;cursor:pointer;border:1px solid var(--line)}
.chip:hover{border-color:var(--blue);color:var(--blue)}

/* processing + success */
.mstate{text-align:center;padding:26px 0}
.spinner{width:48px;height:48px;border:4px solid var(--line);border-top-color:var(--blue);border-radius:50%;margin:0 auto 18px;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.success-ic{width:60px;height:60px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-size:32px;margin:0 auto 16px;animation:pop .3s ease}
@keyframes pop{from{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}
.mstate h4{font-size:20px;margin-bottom:6px}.mstate p{color:var(--slate);font-size:14px}

footer{border-top:1px solid var(--line);padding:30px 0;font-size:14px;color:var(--slate);text-align:center}

/* ---------- MOBILE APP SHELL ---------- */
.tabbar{display:none}
@media(max-width:760px){
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:95;
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
    padding:9px 4px calc(9px + env(safe-area-inset-bottom));
  }
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:11px;font-weight:600;color:var(--slate)}
  .tabbar a .ti{font-size:21px;line-height:1}
  .tabbar a.active{color:var(--blue)}
  .tabbar a.center .ti{
    width:46px;height:46px;margin-top:-22px;border-radius:50%;background:var(--blue);color:#fff;
    display:flex;align-items:center;justify-content:center;font-size:26px;
    box-shadow:0 8px 18px -4px rgba(0,82,255,.6);border:3px solid #fff;
  }
  .dash-body{padding-bottom:96px}
  .dash-nav .right .btn{display:none}
  .dash-nav .wrap{height:58px}
}

/* mobile: modals become bottom sheets */
@media(max-width:760px){
  .modal-overlay{align-items:flex-end;padding:0}
  .modal{max-width:none;border-radius:22px 22px 0 0;padding:24px 20px calc(26px + env(safe-area-inset-bottom));animation:sheet .25s ease}
  @keyframes sheet{from{transform:translateY(100%)}to{transform:translateY(0)}}
  .modal::before{content:"";position:absolute;top:9px;left:50%;transform:translateX(-50%);width:38px;height:4px;border-radius:4px;background:var(--line)}
  .modal .x{top:18px}
}

/* mobile sizing for landing + auth + dashboard */
@media(max-width:600px){
  .wrap{padding:0 18px}
  .hero h1{font-size:34px;letter-spacing:-1px}
  .hero p.sub{font-size:17px}
  .signup-row{flex-direction:column;max-width:none}
  .signup-row button{width:100%}
  .trust .wrap{gap:22px}
  .stat b{font-size:26px}
  h2.title{font-size:26px}
  .cta{padding:40px 24px;border-radius:18px}
  .cta h2{font-size:28px}
  section.block{padding:54px 0}
  .auth-card h1{font-size:25px}
  .code-row input{width:46px;height:54px;font-size:22px}
  .bal{font-size:36px}
  .quick{gap:8px}
  .quick .btn{flex:1 0 auto;padding:12px 14px;font-size:14px}
  .dash-body{padding-top:22px}
  .nav-right .btn{padding:10px 16px;font-size:14px}
}