/* ===== Base Styles ===== */
:root{
  --bg: #0f1221;
  --card: #151936;
  --muted: #8ea1b2;
  --text: #eaf0f6;
  --accent: #8b9dff;
  --accent-2: #3ee7a8;
  --border: #262b56;
}

*{ box-sizing: border-box; }
html, body{ margin:0; padding:0; }
body{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Inter, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1f2460 0%, transparent 60%), var(--bg);
  color: var(--text);
  line-height: 1.55;
}

/* Containers */
.container{
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 24px;
}

/* Header */
.site-header{
  padding-top: 24px;
  padding-bottom: 12px;
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.brand{
  display:flex; gap:12px; align-items:center;
}
#.logo{
  width: 42px; height: 42px; display:grid; place-items:center;
  background: linear-gradient(135deg, #5864ff, #8b9dff);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(88,100,255,.35);
}
.brand-text h1{
  font-size: 20px; margin: 0 0 2px 0;
}
.tagline{
  margin:0; color: var(--muted); font-size: 14px;
}
.top-nav a{
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  border-bottom: 1px solid transparent;
}
.top-nav a:hover{ color: var(--text); border-color: var(--accent); }

/* Hero */
.hero{
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 28px;
  align-items: center;
  padding-top: 16px;
  padding-bottom: 8px;
}
.hero-copy h2{
  font-size: clamp(28px, 3.2vw, 44px);
  margin: 0 0 12px 0;
}
.hero-copy p{ color: var(--muted); margin-top: 0; }
.badges{ margin: 16px 0 0 0; padding:0; list-style:none; color: var(--muted); }
.badges li{ margin-bottom: 6px; }

.hero-card{
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 10px 40px rgba(0,0,0,.3);
}

/* Tabs */
.tabs{
  display:block;
}
.tabs > input[type="radio"]{ display:none; }
.tabs > label{
  display:inline-block;
  padding: 10px 14px;
  margin-right: 8px;
  border:1px solid var(--border);
  background: #121633;
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease;
}
.tabs > label:hover{ transform: translateY(-1px); border-color: var(--accent); }

/* Checked states */
#tab-trainers:checked ~ label[for="tab-trainers"],
#tab-clients:checked ~ label[for="tab-clients"]{
  background: linear-gradient(135deg, rgba(139,157,255,.2), rgba(62,231,168,.18));
  border-color: var(--accent);
}

/* Panels */
.tab-panels{
  margin-top: 14px;
  border:1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: #0f1433;
}
.tab-panel{ display:none; padding: 18px; }
#tab-trainers:checked ~ .tab-panels #panel-trainers{ display:block; }
#tab-clients:checked ~ .tab-panels #panel-clients{ display:block; }

.tab-panel h3{ margin-top: 6px; margin-bottom: 8px; }
.tab-panel p{ color: var(--muted); margin-top: 0; }

/* Forms */
.waitlist-form{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 8px 0;
}
.waitlist-form .field{ display:flex; flex-direction: column; gap:6px; grid-column: span 2; }
.waitlist-form .field.half{ grid-column: span 1; }
.waitlist-form label{ font-size: 13px; color: var(--muted); }
.waitlist-form input{
  padding: 12px 12px;
  border-radius: 10px;
  border:1px solid var(--border);
  background:#0c1030;
  color: var(--text);
  outline: none;
}
.waitlist-form input:focus{ border-color: var(--accent); }
.cta{
  grid-column: span 2;
  padding: 12px 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, #5864ff, #8b9dff);
  color: white;
  border: none;
  cursor: pointer;
  font-weight: 600;
  box-shadow: 0 10px 26px rgba(88,100,255,.35);
}
.cta.alt{
  background: linear-gradient(135deg, #20c997, #3ee7a8);
  box-shadow: 0 10px 26px rgba(62,231,168,.28);
}
.cta:hover{ filter: brightness(1.05); }
.fine-print{ grid-column: span 2; font-size: 12px; color: var(--muted); margin: 6px 0 0 0; }

.benefits{ margin: 8px 0 0 0; padding:0; list-style:none; color: var(--muted); }
.benefits li{ margin: 4px 0; }

/* Sections */
section h2{ font-size: 28px; margin: 22px 0 8px; }
.how .steps{ color: var(--muted); }
.features .grid{
  display:grid; gap:14px;
  grid-template-columns: repeat(3, 1fr);
}
.card{
  padding: 16px;
  border:1px solid var(--border);
  border-radius: 12px;
  background: #10143a;
}
.card h3{ margin-top: 6px; }
.faq details{
  margin: 10px 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #0f1433;
}
.faq summary{ cursor:pointer; }

.policies .tiny{
  color: var(--muted); font-size: 12px;
}

/* Responsive */
@media (max-width: 900px){
  .hero{ grid-template-columns: 1fr; }
  .waitlist-form{ grid-template-columns: 1fr; }
  .waitlist-form .field, .waitlist-form .field.half, .cta, .fine-print{ grid-column: span 1; }
  .features .grid{ grid-template-columns: 1fr; }
  .top-nav{ display:none; }
}