/* ============================================================
   Aqua — дизайн-система (тёмная, карточная, cyan-акцент)
   ============================================================ */
:root{
  --bg:#070a10; --bg2:#0a0e16;
  --card:#0e1420; --card2:#121a29;
  --border:#1c2637; --border2:#273450;
  --accent:#35c4f0; --accent2:#2b8ff2;
  --grad:linear-gradient(135deg,#35c4f0,#2b8ff2);
  --txt:#dce6f2; --dim:#8b98ad; --faint:#5a6578;
  --red:#ff6363; --green:#4ade80; --amber:#fbbf24;
  --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--txt);
  font-family:"Segoe UI",system-ui,Arial,sans-serif;
  min-height:100vh;line-height:1.5;
  background-image:
    radial-gradient(900px 420px at 80% -10%, rgba(53,196,240,.07), transparent 60%),
    radial-gradient(700px 380px at 10% 110%, rgba(43,143,242,.06), transparent 60%);
  background-attachment:fixed;
}
/* кастомный скроллбар */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#223049;border-radius:6px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#2e4165}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:none}
h1,h2,h3{font-weight:700;line-height:1.2}
.mono{font-family:Consolas,"Cascadia Code",monospace}

/* ---------- layout ---------- */
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.hero{padding:90px 0 60px;text-align:center}
.hero h1{font-size:clamp(34px,6vw,58px);letter-spacing:-1px;margin-bottom:18px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--dim);font-size:18px;max-width:640px;margin:0 auto 34px}
.section{padding:56px 0}
.section h2{font-size:30px;text-align:center;margin-bottom:8px}
.section .sub{color:var(--dim);text-align:center;margin-bottom:36px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);
  background:rgba(7,10,16,.75);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:3px;color:var(--txt)}
.brand .drop{width:34px;height:34px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:0 0 18px rgba(53,196,240,.45)}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px}
.nav-links a{color:var(--dim)}
.nav-links a:hover{color:var(--txt)}

/* ---------- cards / buttons / inputs ---------- */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;
  box-shadow:0 8px 28px rgba(0,0,0,.35)}
.card:hover{border-color:var(--border2)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.tile{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .18s,border-color .18s}
.tile:hover{transform:translateY(-3px);border-color:var(--border2)}
.tile .ico{font-size:26px;margin-bottom:12px}
.tile h3{font-size:16px;margin-bottom:6px}
.tile p{color:var(--dim);font-size:14px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;
  background:var(--grad);color:#04121c;font-weight:700;font-size:15px;border:0;border-radius:11px;
  padding:12px 24px;transition:transform .15s,box-shadow .15s,filter .15s;user-select:none}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 22px rgba(53,196,240,.35);filter:brightness(1.08)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn.big{padding:15px 34px;font-size:16px;border-radius:13px}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--border2);box-shadow:none}
.btn.ghost:hover{border-color:var(--accent);box-shadow:0 0 16px rgba(53,196,240,.18)}
.btn.danger{background:linear-gradient(135deg,#ff6363,#d63a5a);color:#fff}
.btn.sm{padding:8px 14px;font-size:13px;border-radius:9px}
.btn.block{width:100%}

.input{width:100%;background:var(--bg2);border:1px solid var(--border2);border-radius:11px;
  padding:12px 14px;color:var(--txt);font-size:15px;outline:none;transition:border-color .15s,box-shadow .15s}
.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(53,196,240,.14)}
.input::placeholder{color:#516078}
label.fl{display:block;font-size:13px;color:var(--dim);margin:0 0 6px 2px}

.badge{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;
  padding:4px 10px;border-radius:999px;background:rgba(53,196,240,.12);color:var(--accent);border:1px solid rgba(53,196,240,.3)}
.badge.ok{background:rgba(74,222,128,.1);color:var(--green);border-color:rgba(74,222,128,.3)}
.badge.off{background:rgba(255,99,99,.1);color:var(--red);border-color:rgba(255,99,99,.3)}
.badge.amber{background:rgba(251,191,36,.1);color:var(--amber);border-color:rgba(251,191,36,.3)}

.row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.kv{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
.kv:last-child{border-bottom:0}
.kv .k{color:var(--dim)}
.kv .v{font-weight:600;text-align:right;word-break:break-all}

/* ---------- pricing ---------- */
.price-card{text-align:center;position:relative;display:flex;flex-direction:column}
.price-card .name{font-size:15px;color:var(--dim);margin-bottom:4px}
.price-card .price{font-size:40px;font-weight:800;margin:10px 0 2px}
.price-card .per{color:var(--dim);font-size:13px;margin-bottom:16px}
.price-card ul{list-style:none;margin:0 0 22px;text-align:left;flex:1}
.price-card li{padding:7px 0;font-size:14px;color:var(--dim)}
.price-card li::before{content:"✓  ";color:var(--green);font-weight:700}
.price-card.featured{border-color:var(--accent);box-shadow:0 0 34px rgba(53,196,240,.18)}
.price-card .flag{position:absolute;top:-12px;left:50%;transform:translateX(-50%)}

/* ---------- steps ---------- */
.step-num{width:42px;height:42px;flex:0 0 42px;border-radius:12px;background:var(--grad);color:#04121c;
  font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 0 18px rgba(53,196,240,.4)}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.steps .tile{display:flex;gap:16px;align-items:flex-start}

/* ---------- auth page ---------- */
.auth-box{max-width:420px;margin:70px auto}
.tabs{display:flex;gap:6px;background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:5px;margin-bottom:22px}
.tab{flex:1;text-align:center;padding:10px;border-radius:9px;cursor:pointer;font-size:14px;font-weight:600;color:var(--dim);transition:all .15s}
.tab.on{background:var(--grad);color:#04121c}
.msg{font-size:14px;padding:11px 14px;border-radius:10px;margin-bottom:14px;display:none}
.msg.err{display:block;background:rgba(255,99,99,.1);border:1px solid rgba(255,99,99,.35);color:#ff9c9c}
.msg.ok{display:block;background:rgba(74,222,128,.1);border:1px solid rgba(74,222,128,.35);color:#8ff0b6}
.msg.warn{display:block;background:rgba(255,191,36,.1);border:1px solid rgba(255,191,36,.35);color:#ffd97a}

/* ---------- key display ---------- */
.keybox{background:var(--bg2);border:1px dashed var(--border2);border-radius:12px;padding:18px;text-align:center;margin:14px 0}
.keybox .k{font-family:Consolas,monospace;font-size:22px;letter-spacing:2px;color:var(--accent);font-weight:700}

/* ---------- table ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;color:var(--dim);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.7px;
  padding:10px 12px;border-bottom:1px solid var(--border2)}
.tbl td{padding:11px 12px;border-bottom:1px solid var(--border)}
.tbl tr:hover td{background:rgba(53,196,240,.04)}

/* ---------- toast ---------- */
#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);opacity:0;
  background:var(--card2);border:1px solid var(--border2);border-radius:12px;padding:13px 22px;font-size:14px;
  box-shadow:0 10px 40px rgba(0,0,0,.5);transition:all .3s;z-index:99;max-width:90vw}
#toast.show{transform:translateX(-50%) translateY(0);opacity:1}
#toast.ok{border-color:rgba(74,222,128,.5)}
#toast.err{border-color:rgba(255,99,99,.5)}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--border);margin-top:60px;padding:26px 0;color:var(--faint,#5a6578);font-size:13px;text-align:center}

/* ---------- animations ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.fade{animation:fadeUp .5s ease both}
.d1{animation-delay:.05s}.d2{animation-delay:.12s}.d3{animation-delay:.19s}.d4{animation-delay:.26s}

.spin{display:inline-block;width:16px;height:16px;border:2px solid rgba(4,18,28,.3);border-top-color:#04121c;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
@media(max-width:640px){.hero{padding:60px 0 40px}.nav-links .hide-m{display:none}}