@import url('https://fonts.googleapis.com/css2?family=Cal+Sans&family=Inter:wght@300;400;500&family=JetBrains+Mono:wght@300;400&display=swap');

/* ─── Reset ─── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px;scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  background:#060609;
  color:#e8eaf0;
  min-height:100vh;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* ─── CSS Variables ─── */
:root{
  --bg:       #060609;
  --bg1:      #0a0b10;
  --bg2:      #0f1018;
  --bg3:      #14161f;

  /* Blue-violet accent system */
  --a1:       #6366f1;   /* indigo */
  --a2:       #818cf8;   /* lighter */
  --a3:       #a5b4fc;   /* softest */
  --a-glow:   rgba(99,102,241,0.22);
  --a-glow2:  rgba(99,102,241,0.08);
  --a-border: rgba(99,102,241,0.35);

  /* Cyan accent for secondary */
  --c1:       #22d3ee;
  --c-glow:   rgba(34,211,238,0.15);

  /* Violet accent for tertiary */
  --v1:       #c084fc;
  --v-glow:   rgba(192,132,252,0.15);

  --t1:#f0f2ff;
  --t2:#8b90b0;
  --t3:#3e4260;

  --border:    rgba(255,255,255,0.06);
  --border2:   rgba(255,255,255,0.10);
  --border3:   rgba(255,255,255,0.16);

  --crit:#f87171; --crit-bg:rgba(248,113,113,0.07); --crit-b:rgba(248,113,113,0.20);
  --warn:#fbbf24; --warn-bg:rgba(251,191,36,0.07);  --warn-b:rgba(251,191,36,0.20);
  --ok:  #34d399; --ok-bg:  rgba(52,211,153,0.07);  --ok-b:  rgba(52,211,153,0.20);
  --info:#6366f1; --info-bg:rgba(99,102,241,0.07);  --info-b:rgba(99,102,241,0.20);

  --r:8px; --r2:12px; --r3:18px; --r4:24px; --r5:32px;
  --f-head:'Cal Sans','Inter',sans-serif;
  --f-body:'Inter',sans-serif;
  --f-mono:'JetBrains Mono','Fira Code',monospace;
  --ease:cubic-bezier(.4,0,.2,1);
  --spring:cubic-bezier(.34,1.56,.64,1);
}

/* ─── Animated background mesh ─── */
body::before{
  content:'';
  position:fixed;inset:0;z-index:0;
  background:
    radial-gradient(ellipse 100% 60% at 10% -10%, rgba(99,102,241,0.12) 0%, transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 110%,  rgba(192,132,252,0.08) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 50%,   rgba(34,211,238,0.04) 0%, transparent 60%);
  pointer-events:none;
}
body>*{position:relative;z-index:1}

/* ─── NAV ─── */
.nav{
  position:sticky;top:0;z-index:500;
  height:64px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 2rem;
  background:rgba(6,6,9,0.75);
  backdrop-filter:blur(24px) saturate(160%);
  -webkit-backdrop-filter:blur(24px) saturate(160%);
  border-bottom:1px solid var(--border);
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-family:var(--f-head);font-size:18px;
  color:var(--t1);text-decoration:none;letter-spacing:-.3px;
}
.logo-gem{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--a1),var(--v1));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 20px var(--a-glow);
  transition:box-shadow .3s var(--ease),transform .3s var(--ease));
}
.logo-gem:hover{box-shadow:0 0 32px var(--a-glow);transform:scale(1.05)}
.logo-gem svg{width:16px;height:16px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  font-size:13.5px;font-weight:400;color:var(--t2);
  text-decoration:none;padding:6px 14px;border-radius:var(--r2);
  transition:all .18s var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,0.05)}
.nav-link.active{color:var(--a3)}
.nav-right{display:flex;align-items:center;gap:8px}

/* ─── Buttons ─── */
.btn{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--f-body);font-size:13px;font-weight:500;
  padding:8px 18px;border-radius:var(--r2);cursor:pointer;
  text-decoration:none;transition:all .22s var(--ease);
  white-space:nowrap;letter-spacing:-.01em;border:none;
}
.btn-ghost{
  color:var(--t2);
  background:rgba(255,255,255,0.04);
  border:1px solid var(--border2);
}
.btn-ghost:hover{color:var(--t1);background:rgba(255,255,255,0.07);border-color:var(--border3)}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--a1) 0%,var(--v1) 100%);
  box-shadow:0 0 24px var(--a-glow);
  position:relative;overflow:hidden;
}
.btn-primary::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--a2),var(--c1));
  opacity:0;transition:opacity .3s var(--ease);
}
.btn-primary:hover{box-shadow:0 0 40px var(--a-glow);transform:translateY(-1px)}
.btn-primary:hover::before{opacity:1}
.btn-primary>*{position:relative}
.btn-primary:disabled{opacity:.35;cursor:not-allowed;transform:none;box-shadow:none}
.btn-lg{font-size:14.5px;padding:11px 26px;border-radius:var(--r3)}

/* ─── Pill / badge ─── */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;font-weight:500;letter-spacing:.07em;text-transform:uppercase;
  color:var(--a3);background:var(--a-glow2);
  border:1px solid var(--a-border);border-radius:30px;padding:4px 13px;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--a1);animation:pulse-dot 2s ease infinite}
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.7)}}

/* ─── Glow card ─── */
.gcard{
  background:var(--bg2);
  border:1px solid var(--border);
  border-radius:var(--r3);
  position:relative;overflow:hidden;
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.gcard::before{
  content:'';position:absolute;inset:0;border-radius:inherit;
  background:radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(99,102,241,0.08) 0%, transparent 60%);
  opacity:0;transition:opacity .4s var(--ease);pointer-events:none;
}
.gcard:hover{border-color:var(--border2);transform:translateY(-2px);box-shadow:0 20px 60px rgba(0,0,0,0.4)}
.gcard:hover::before{opacity:1}

/* ─── Section header ─── */
.sec-head{text-align:center;margin-bottom:4rem}
.sec-head .pill{margin-bottom:1.25rem}
.sec-title{
  font-family:var(--f-head);
  font-size:clamp(30px,4.5vw,46px);
  font-weight:400;color:var(--t1);
  letter-spacing:-.04em;line-height:1.15;margin-bottom:14px;
}
.sec-title span{
  background:linear-gradient(90deg,var(--a2),var(--v1));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.sec-sub{font-size:15px;font-weight:300;color:var(--t2);max-width:520px;margin:0 auto;line-height:1.8}

/* ─── Footer ─── */
.site-footer{
  border-top:1px solid var(--border);padding:2.5rem 0;
  background:rgba(6,6,9,0.6);backdrop-filter:blur(12px);
}
.footer-inner{
  max-width:1180px;margin:0 auto;padding:0 2rem;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;
}
.footer-brand{font-family:var(--f-head);font-size:16px;color:var(--t2)}
.footer-links{display:flex;gap:2rem}
.footer-links a{font-size:12.5px;color:var(--t3);text-decoration:none;transition:color .18s;font-weight:300}
.footer-links a:hover{color:var(--t2)}
.footer-copy{font-size:12px;color:var(--t3);font-weight:300}

/* ─── Scroll reveal ─── */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:none}
.reveal-d1{transition-delay:.1s}.reveal-d2{transition-delay:.2s}.reveal-d3{transition-delay:.3s}.reveal-d4{transition-delay:.4s}

/* ─── Chip ─── */
.chip{
  font-size:11.5px;padding:4px 12px;border-radius:20px;
  border:1px solid var(--border2);color:var(--t2);
  cursor:pointer;background:transparent;font-family:var(--f-body);
  transition:all .18s var(--ease);font-weight:300;
}
.chip:hover{border-color:var(--border3);color:var(--t1);background:rgba(255,255,255,0.04)}
.chip.on{background:var(--a-glow2);color:var(--a3);border-color:var(--a-border)}

/* ─── Auth modal ─── */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:1000;
  background:rgba(4,4,8,0.85);backdrop-filter:blur(16px);
  align-items:center;justify-content:center;
}
.modal-overlay.on{display:flex}
.modal{
  background:var(--bg2);border:1px solid var(--border2);border-radius:var(--r4);
  padding:2.25rem;width:100%;max-width:400px;margin:1rem;
  box-shadow:0 32px 80px rgba(0,0,0,0.6),0 0 60px var(--a-glow);
  animation:mIn .28s var(--spring);position:relative;
}
@keyframes mIn{from{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:none}}
.modal-title{font-family:var(--f-head);font-size:22px;color:var(--t1);margin-bottom:4px;letter-spacing:-.03em}
.modal-sub{font-size:13px;color:var(--t2);margin-bottom:1.75rem;font-weight:300}
.field{margin-bottom:1.1rem}
.field label{display:block;font-size:11px;font-weight:500;color:var(--t3);margin-bottom:6px;letter-spacing:.06em;text-transform:uppercase}
.field input{
  width:100%;height:44px;padding:0 14px;
  font-size:14px;font-family:var(--f-body);font-weight:300;
  background:rgba(255,255,255,0.04);border:1px solid var(--border2);
  border-radius:var(--r2);color:var(--t1);outline:none;
  transition:all .2s var(--ease);
}
.field input:focus{border-color:var(--a-border);box-shadow:0 0 0 3px var(--a-glow2),0 0 20px var(--a-glow)}
.field input::placeholder{color:var(--t3);font-weight:300}
.modal-footer{display:flex;align-items:center;justify-content:space-between;margin-top:1.75rem;flex-wrap:wrap;gap:10px}
.modal-switch{font-size:12px;color:var(--t2)}
.modal-switch a{color:var(--a3);cursor:pointer}
.modal-error{font-size:12px;color:var(--crit);background:var(--crit-bg);border:1px solid var(--crit-b);border-radius:var(--r);padding:9px 13px;margin-bottom:1.1rem;display:none}
.modal-error.on{display:block}
.close-modal{
  position:absolute;top:1rem;right:1rem;
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.05);border:1px solid var(--border);
  color:var(--t3);cursor:pointer;font-size:13px;
  transition:all .18s var(--ease);
}
.close-modal:hover{color:var(--t1);border-color:var(--border2)}

/* User pill */
.user-pill{
  display:flex;align-items:center;gap:9px;
  padding:5px 13px 5px 5px;border:1px solid var(--border2);border-radius:30px;
  cursor:pointer;background:rgba(255,255,255,0.03);
  transition:all .18s var(--ease);
}
.user-pill:hover{border-color:var(--a-border);box-shadow:0 0 20px var(--a-glow)}
.avatar{
  width:28px;height:28px;border-radius:50%;
  background:linear-gradient(135deg,var(--a1),var(--v1));
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:600;color:#fff;
}
.user-name{font-size:12px;color:var(--t2)}
.user-wrap{position:relative}
.user-menu{
  display:none;position:absolute;top:calc(100% + 10px);right:0;
  background:var(--bg2);border:1px solid var(--border2);border-radius:var(--r2);
  padding:6px;min-width:170px;z-index:300;
  box-shadow:0 20px 60px rgba(0,0,0,0.5),0 0 40px var(--a-glow);
  animation:mIn .2s var(--ease);
}
.user-menu.on{display:block}
.user-menu a,.user-menu button{
  display:block;width:100%;text-align:left;padding:8px 13px;
  font-size:13px;font-family:var(--f-body);font-weight:300;
  color:var(--t2);text-decoration:none;background:none;border:none;
  border-radius:var(--r);cursor:pointer;transition:all .18s var(--ease);
}
.user-menu a:hover,.user-menu button:hover{background:rgba(255,255,255,0.05);color:var(--t1)}
.user-menu .logout{color:var(--crit)}

/* ─── Page wrap ─── */
.page-wrap{max-width:1180px;margin:0 auto;padding:0 2rem}

@media(max-width:700px){
  .nav{padding:0 1.25rem}
  .nav-links{display:none}
  .page-wrap{padding:0 1.25rem}
}