/* TraQFitPro — base: design tokens, reset, buttons, nav, zone bar */

:root{
  --navy:#1A3557;
  --bg:#0F2038;          /* signature navy, deepened for background */
  --surface:#12294A;
  --card:#173156;
  --card2:#1C3A64;
  --line:rgba(222,226,230,.12);
  --text:#F5F7FA;
  --muted:#90A4AE;       /* lightBlueGray */
  --orange:#F05A28;      /* brightOrange — primary action */
  --green:#4CAF50;       /* leafGreen — nutrition/success */
  --red:#E53935;         /* heartRed — cardio/alerts */
  --zone1:#4CAF50;   /* nutrition/steady */
  --zone2:#F05A28;   /* effort */
  --zone3:#F05A28;   /* push */
  --zone4:#E53935;   /* max/cardio */
  --grad-zone:linear-gradient(90deg,#4CAF50,#F05A28 50%,#E53935);
  --grad-cta:linear-gradient(120deg,#F05A28,#E53935);
  --radius:18px;
  --disp:'Barlow Condensed',sans-serif;
  --body:'Barlow',sans-serif;
  --mono:'IBM Plex Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.6;overflow-x:hidden}
::selection{background:#F05A28;color:#fff}
img{max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* ---------- zone bar ---------- */
.zonebar{position:fixed;top:0;left:0;right:0;height:3px;background:var(--grad-zone);z-index:200;background-size:200% 100%;animation:zoneflow 12s linear infinite}
@keyframes zoneflow{0%{background-position:0% 0}100%{background-position:200% 0}}

/* ---------- nav ---------- */
nav{position:fixed;top:3px;left:0;right:0;z-index:150;display:flex;align-items:center;justify-content:space-between;padding:16px clamp(20px,5vw,64px);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);background:rgba(10,13,18,.72);border-bottom:1px solid var(--line);transition:padding .3s}
.logo{font-family:var(--disp);font-weight:800;font-size:26px;letter-spacing:.5px;text-transform:uppercase;display:flex;align-items:center;gap:10px}
.logo .pulse{width:11px;height:11px;border-radius:50%;background:var(--grad-cta);position:relative}
.logo .pulse::after{content:'';position:absolute;inset:-5px;border-radius:50%;border:1.5px solid #F05A28;opacity:.55;animation:ping 2.2s ease-out infinite}
@keyframes ping{0%{transform:scale(.5);opacity:.7}100%{transform:scale(1.6);opacity:0}}
.logo em{font-style:normal;background:var(--grad-cta);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:30px;font-size:15px;font-weight:500;color:var(--muted)}
.nav-links a{transition:color .2s;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-cta{display:flex;gap:12px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;padding:11px 22px;border-radius:999px;border:1px solid transparent;transition:transform .2s,box-shadow .3s,border-color .2s}
.btn:active{transform:scale(.97)}
.btn-ghost{border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(234,240,246,.3)}
.btn-grad{background:var(--grad-cta);color:#fff;position:relative;overflow:hidden;box-shadow:0 8px 28px -8px rgba(255,61,129,.5)}
.btn-grad::before{content:'';position:absolute;top:0;left:-80%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-20deg)}
.btn-grad:hover::before{animation:shine .9s ease}
@keyframes shine{to{left:130%}}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 14px 36px -8px rgba(255,61,129,.65)}
.btn-big{font-size:17px;padding:15px 32px}
.btn-demo{border:1px solid rgba(240,90,40,.5);color:var(--text);background:rgba(240,90,40,.08)}
.btn-demo:hover{border-color:var(--orange);background:rgba(240,90,40,.16)}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--orange);position:relative;flex:none}
.live-dot::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:1.5px solid var(--orange);opacity:.6;animation:ping 1.8s ease-out infinite}
.demo-line{display:inline-flex;align-items:center;gap:12px;margin-top:26px;padding:13px 20px;border-radius:14px;background:var(--card);border:1px solid var(--line);font-size:15px;color:var(--muted);transition:border-color .25s,transform .25s}
.demo-line b{color:var(--orange);font-weight:600}
.demo-line:hover{border-color:rgba(240,90,40,.5);transform:translateY(-2px)}
.demo-arrow{color:var(--orange);font-weight:700;transition:transform .25s}
.demo-line:hover .demo-arrow{transform:translateX(4px)}