*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
:root{
  --bg:#0a0a14;
  --bg2:#0f0f1e;
  --surface:rgba(255,255,255,0.05);
  --surface2:rgba(255,255,255,0.08);
  --border:rgba(255,255,255,0.08);
  --border-hover:rgba(255,255,255,0.2);
  --accent:#007AFF;
  --accent-hover:#0071e3;
  --accent-dim:rgba(0,122,255,0.15);
  --danger:#ff3b30;
  --danger-dim:rgba(255,59,48,0.15);
  --success:#34c759;
  --success-dim:rgba(52,199,89,0.15);
  --warn:#ff9500;
  --text:#ffffff;
  --text2:rgba(255,255,255,0.6);
  --text3:rgba(255,255,255,0.35);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 4px 24px rgba(0,0,0,0.4);
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','Segoe UI',sans-serif;font-size:15px;line-height:1.6;overflow-x:hidden;}
a{color:var(--accent);text-decoration:none;}
a:hover{opacity:.8;}
img{max-width:100%;display:block;}
input,textarea,select{font-family:inherit;font-size:inherit;}
button{font-family:inherit;cursor:pointer;}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-sm);padding:10px 20px;font-size:0.9rem;font-weight:600;border:none;cursor:pointer;transition:all .15s ease;text-decoration:none;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 16px rgba(0,122,255,0.3);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,122,255,0.4);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border);}
.btn-secondary:hover{background:rgba(255,255,255,0.12);border-color:var(--border-hover);}
.btn-danger{background:var(--danger-dim);color:var(--danger);border:1px solid rgba(255,59,48,0.3);}
.btn-danger:hover{background:rgba(255,59,48,0.25);}
.btn-lg{padding:14px 32px;font-size:1rem;border-radius:var(--radius);}
.btn-sm{padding:7px 14px;font-size:0.8rem;border-radius:8px;}

/* Forms */
.form-group{margin-bottom:18px;}
.form-group label{display:block;font-size:0.8rem;font-weight:500;color:var(--text2);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;}
.form-control{width:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;color:var(--text);outline:none;transition:border-color .15s;}
.form-control:focus{border-color:var(--accent);}
.form-control::placeholder{color:var(--text3);}
.form-hint{font-size:12px;color:var(--text3);margin-top:4px;}
.form-error{font-size:12px;color:var(--danger);margin-top:4px;}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;}
.card-sm{padding:16px;}

/* Alert */
.alert{padding:12px 16px;border-radius:var(--radius-sm);font-size:0.875rem;margin-bottom:16px;}
.alert-error{background:var(--danger-dim);color:var(--danger);border:1px solid rgba(255,59,48,0.3);}
.alert-success{background:var(--success-dim);color:var(--success);border:1px solid rgba(52,199,89,0.3);}
.alert-info{background:var(--accent-dim);color:#60a5fa;border:1px solid rgba(0,122,255,0.3);}

/* Nav */
.nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 2rem;position:sticky;top:0;z-index:50;background:rgba(10,10,20,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);}
.nav-logo{font-size:1.4rem;font-weight:900;letter-spacing:-0.5px;color:var(--text);text-decoration:none;}
.nav-logo span{color:var(--accent);}
.nav-links{display:flex;align-items:center;gap:8px;}
.nav-link{color:var(--text2);font-size:0.875rem;font-weight:500;padding:8px 14px;border-radius:8px;transition:all .15s;}
.nav-link:hover{color:var(--text);background:var(--surface);}
.nav-link.btn-primary{color:#fff;padding:8px 18px;}

/* Auth pages */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem 1rem;}
.auth-box{width:100%;max-width:400px;}
.auth-logo{text-align:center;font-size:1.8rem;font-weight:900;color:var(--text);margin-bottom:8px;}
.auth-logo span{color:var(--accent);}
.auth-subtitle{text-align:center;color:var(--text2);font-size:0.9rem;margin-bottom:32px;}
.auth-footer{text-align:center;font-size:0.85rem;color:var(--text3);margin-top:20px;}
.auth-footer a{color:var(--text2);}

/* Utilities */
.text-center{text-align:center;}
.text-muted{color:var(--text2);}
.mt-1{margin-top:8px;} .mt-2{margin-top:16px;} .mt-3{margin-top:24px;} .mt-4{margin-top:32px;}
.mb-1{margin-bottom:8px;} .mb-2{margin-bottom:16px;} .mb-3{margin-bottom:24px;}
.gap-1{gap:8px;} .gap-2{gap:16px;}
.flex{display:flex;} .flex-center{align-items:center;} .justify-between{justify-content:space-between;}
.w-full{width:100%;}
.powered{text-align:center;font-size:.75rem;color:var(--text3);padding:24px 0;}
.powered a{color:var(--text3);text-decoration:none;}
.powered a strong{font-weight:700;letter-spacing:.02em;}

/* Spinner */
.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,0.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;display:inline-block;}
@keyframes spin{to{transform:rotate(360deg);}}

@media(max-width:600px){
  .nav{padding:1rem;}
  .btn-lg{padding:12px 24px;}
}