@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f8fafc;--surface:#fff;--border:#e2e8f0;
  --primary:#4f46e5;--primary-h:#4338ca;--primary-soft:#eef2ff;
  --success:#16a34a;--success-soft:#f0fdf4;
  --danger:#dc2626;--danger-soft:#fef2f2;
  --warning:#d97706;--warning-soft:#fffbeb;
  --text:#0f172a;--muted:#64748b;
  --radius:14px;--shadow:0 1px 3px rgba(0,0,0,.05),0 6px 16px rgba(0,0,0,.04);
}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;font-size:15px;line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}

/* Navbar */
.navbar{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 2rem;height:60px;display:flex;align-items:center;justify-content:space-between}
.brand{font-size:1.4rem;font-weight:800;color:var(--primary);text-decoration:none;letter-spacing:-.5px}
.nav-links a{color:var(--muted);text-decoration:none;margin-left:2rem;font-weight:500;font-size:15px;transition:color .15s}
.nav-links a:hover{color:var(--primary);text-decoration:none}

/* Main */
.container{max-width:1200px;width:100%;margin:0 auto;padding:2rem;flex:1}

/* Hero - full width gradient bg */
.hero-wrap{background:linear-gradient(135deg,#eef2ff 0%,#e0e7ff 50%,#c7d2fe 100%);padding:5rem 2rem;text-align:center;width:100%}
.hero h1{font-size:3rem;font-weight:800;color:var(--text);letter-spacing:-1.5px;margin-bottom:1rem}
.hero h1 span{background:linear-gradient(135deg,#4f46e5,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.lead{font-size:1.15rem;color:var(--muted);max-width:560px;margin:0 auto 2rem}
.hero-cta{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}

/* Features */
.features-wrap{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:4rem 2rem;width:100%}
.features{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:2rem 1.5rem;text-align:center;transition:transform .15s,box-shadow .15s}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.feature-card .icon{font-size:2.2rem;margin-bottom:.75rem}
.feature-card h3{font-size:1rem;font-weight:700;margin-bottom:.4rem}
.feature-card p{color:var(--muted);font-size:.88rem}

/* How it works */
.how-wrap{padding:4rem 2rem;width:100%;text-align:center}
.how-wrap h2{font-size:1.8rem;font-weight:800;margin-bottom:2rem}
.steps-grid{max-width:800px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.step{padding:1.5rem 1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}
.step .num{width:36px;height:36px;background:var(--primary);color:#fff;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem;margin-bottom:.75rem}
.step p{font-size:.9rem;color:var(--text)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.7rem 1.5rem;border-radius:10px;font-size:.95rem;font-weight:600;cursor:pointer;text-decoration:none;transition:all .15s;border:none;font-family:inherit}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(79,70,229,.3)}
.btn-primary:hover{background:var(--primary-h);color:#fff;box-shadow:0 4px 12px rgba(79,70,229,.4)}
.btn-outline{background:var(--surface);color:var(--text);border:1.5px solid var(--border)}
.btn-outline:hover{background:var(--bg);border-color:var(--primary);color:var(--primary)}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}
.btn-success{background:var(--success);color:#fff}
.btn-block{width:100%}.btn-sm{padding:.35rem .9rem;font-size:.85rem}
.btn-lg{padding:.85rem 2.5rem;font-size:1.1rem;border-radius:12px}

/* Auth Box */
.auth-box{max-width:420px;margin:3rem auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2.5rem 2rem;box-shadow:var(--shadow)}
.auth-box h2{margin-bottom:1.5rem;font-size:1.4rem;text-align:center}
.auth-alt{margin-top:1.25rem;text-align:center;color:var(--muted);font-size:.9rem}
.hint{font-size:.82rem;color:var(--muted);margin-top:2px}

/* Forms */
label{display:flex;flex-direction:column;gap:.35rem;margin-bottom:1rem;font-size:.9rem;font-weight:500;color:var(--text)}
input[type=text],input[type=email],input[type=password]{background:var(--bg);border:1.5px solid var(--border);border-radius:10px;color:var(--text);padding:.65rem .9rem;font-size:.95rem;font-family:inherit;transition:border-color .2s,box-shadow .2s}
input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}

/* Alerts */
.alert{padding:.75rem 1rem;border-radius:10px;margin-bottom:1rem;font-size:.9rem;border:1px solid}
.alert-error{color:var(--danger);border-color:#fecaca;background:var(--danger-soft)}
.alert-success{color:var(--success);border-color:#bbf7d0;background:var(--success-soft)}
.alert-info{color:var(--primary);border-color:#c7d2fe;background:var(--primary-soft)}

/* Dashboard */
.dashboard{max-width:760px;margin:0 auto}
.dashboard-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem}
.dashboard-header h2{font-size:1.5rem;font-weight:700}

/* Card */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;margin-bottom:1.25rem;box-shadow:var(--shadow)}
.card h3{margin-bottom:.75rem;font-size:1.1rem;font-weight:700}
.card-actions{display:flex;gap:.5rem;margin-top:.75rem;flex-wrap:wrap}

/* Copy Row */
.copy-row{display:flex;align-items:center;gap:.5rem;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:.55rem .85rem;margin:.4rem 0 .6rem}
.copy-row code{flex:1;font-size:.85rem;word-break:break-all;color:var(--primary);font-family:'SF Mono',Menlo,Consolas,monospace;background:none;padding:0}
.copy-btn{padding:.3rem .7rem;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--muted);cursor:pointer;font-size:.8rem;font-family:inherit;white-space:nowrap;transition:all .15s;user-select:none}
.copy-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}

/* Tabs */
.tabs{display:flex;gap:.4rem;margin-bottom:1rem}
.tab-btn{padding:.45rem 1rem;border-radius:10px;border:1.5px solid var(--border);background:var(--surface);color:var(--muted);cursor:pointer;font-size:.9rem;font-weight:500;font-family:inherit;transition:all .15s}
.tab-btn.active,.tab-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.tab-pane p{margin-bottom:.4rem;line-height:1.6}

/* Badges */
.badge{display:inline-block;padding:.2rem .65rem;border-radius:99px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.badge-success{background:var(--success-soft);color:var(--success)}
.badge-warning{background:var(--warning-soft);color:var(--warning)}
.badge-danger{background:var(--danger-soft);color:var(--danger)}

/* Steps */
.steps{list-style:none;counter-reset:step}
.steps li{counter-increment:step;padding:.65rem 0 .65rem 2.8rem;position:relative;font-size:.95rem}
.steps li::before{content:counter(step);position:absolute;left:0;top:.65rem;width:26px;height:26px;background:var(--primary-soft);color:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.82rem}

/* Misc */
.meta{color:var(--muted);font-size:.9rem}
code{background:var(--primary-soft);color:var(--primary);padding:.1rem .4rem;border-radius:5px;font-family:'SF Mono',Menlo,Consolas,monospace;font-size:.88em}
.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin:1.5rem auto 0}
@keyframes spin{to{transform:rotate(360deg)}}
.site-footer{text-align:center;padding:1.5rem;color:var(--muted);font-size:.82rem;border-top:1px solid var(--border);background:var(--surface)}

@media(max-width:768px){
  .hero h1{font-size:2rem}
  .features{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .container{padding:1rem}
  .hero-wrap{padding:3rem 1.5rem}
  .nav-links a{margin-left:1rem;font-size:.9rem}
}
@media(max-width:480px){
  .features{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr 1fr}
}