/* fnotrader-portal — shared theme (light + dark, matches fnotrader brand blue).
   Theme = html[data-theme]; set pre-paint from localStorage.fntTheme. */
:root{
  --bg:#f6f8fc; --panel:#ffffff; --panel-2:#eef2f8; --border:#d4dce8;
  --text:#0a1628; --text-2:#33415a; --muted:#5b6b85;
  --blue:#2b6fff; --violet:#6a4bff; --pink:#ff3b6b; --green:#15803d; --orange:#f5821f; --teal:#0d9488;
  --grad:linear-gradient(125deg,#2b6fff 0%,#6a4bff 46%,#ff3b6b 100%);
  --shadow:0 6px 24px rgba(13,40,90,.08);
  --nav-bg:rgba(255,255,255,.88);
}
html[data-theme="dark"]{
  --bg:#0a101e; --panel:#121a2d; --panel-2:#1a2440; --border:#273452;
  --text:#e9eef8; --text-2:#bac5db; --muted:#8795b0;
  --blue:#5b9aff; /* dark-blue text is unreadable on dark panels — lighten */
  --green:#34d399;
  --shadow:0 6px 24px rgba(0,0,0,.42);
  --nav-bg:rgba(10,16,30,.85);
}
html[data-theme="dark"] body{color-scheme:dark;}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 'Segoe UI',system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;}
a{color:var(--blue);text-decoration:none;}
h1,h2,h3{letter-spacing:-.02em;}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}

/* buttons */
.btn{display:inline-block;border:none;border-radius:12px;padding:13px 26px;font-weight:650;font-size:15px;cursor:pointer;transition:transform .12s,box-shadow .15s,filter .15s;text-align:center;}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:scale(.98);}
.btn-cta{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(43,111,255,.32);}
.btn-cta:hover{box-shadow:0 14px 34px rgba(43,111,255,.42);}
.btn-ghost{background:transparent;border:1.5px solid var(--border);color:var(--text);}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);}
.btn-sm{padding:9px 18px;font-size:13px;border-radius:10px;}

/* nav */
.nav{position:sticky;top:0;z-index:100;background:var(--nav-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);}
.nav-in{display:flex;align-items:center;gap:26px;height:62px;}
.logo{display:inline-flex;align-items:center;gap:9px;font-size:19px;font-weight:800;letter-spacing:-.02em;color:#1e6fd8;text-decoration:none;}
.logo b{color:var(--text);}
/* app-icon style mark: the F on a white rounded tile */
.logo img{width:34px;height:34px;display:block;padding:4px;background:#fff;border-radius:9px;box-shadow:0 2px 10px rgba(0,0,0,.18);}
.logo>span{display:inline-block;white-space:nowrap;}
.logo>span::after{content:"®";font-size:9px;vertical-align:super;font-weight:600;color:var(--muted);margin-left:1px;}
html[data-theme="dark"] .logo{color:#5b9aff;}
.nav-links{display:flex;gap:22px;flex:1;}
.nav-links a{color:var(--text-2);font-weight:600;font-size:14px;}
.nav-links a:hover{color:var(--blue);}
.nav-auth{display:flex;gap:10px;align-items:center;}
@media (max-width:760px){.nav-links{display:none;}}

/* cards / tiles */
.card{background:var(--panel);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);}

/* modal */
.modal-bk{position:fixed;inset:0;background:rgba(8,16,32,.55);z-index:1000;display:flex;align-items:center;justify-content:center;padding:16px;}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:28px;width:420px;max-width:100%;box-shadow:0 24px 70px rgba(0,0,0,.28);}
.modal h3{margin:0 0 4px;font-size:21px;}
.modal .sub{margin:0 0 18px;color:var(--muted);font-size:13.5px;}
.field{margin-bottom:13px;}
.field label{display:block;font-size:12.5px;font-weight:700;color:var(--text-2);margin-bottom:5px;}
.field input{width:100%;padding:11px 13px;border:1.5px solid var(--border);border-radius:10px;font-size:14.5px;background:var(--bg);color:var(--text);outline:none;transition:border-color .15s;}
.field input:focus{border-color:var(--blue);}
.form-err{color:#b91c1c;font-size:13px;min-height:18px;margin:4px 0 8px;}
.modal .btn{width:100%;}
.modal-sw{text-align:center;margin-top:14px;font-size:13.5px;color:var(--muted);}
.modal-sw a{font-weight:700;cursor:pointer;}
.modal-x{float:right;background:none;border:none;font-size:22px;color:var(--muted);cursor:pointer;line-height:1;margin:-6px -6px 0 0;}

/* theme toggle (sun/moon) */
.theme-tg{background:transparent;border:1.5px solid var(--border);border-radius:10px;width:36px;height:36px;padding:0;font-size:16px;line-height:1;cursor:pointer;color:var(--text);}
.theme-tg:hover{border-color:var(--blue);}

/* toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#0a1628;color:#fff;padding:12px 22px;border-radius:12px;font-size:14px;font-weight:600;z-index:2000;box-shadow:0 12px 32px rgba(0,0,0,.3);}
.toast.err{background:#b91c1c;}