/* ============================================================
   InfinityFree-inspired theme
   Palette: primary purple #6d28d9, orange premium #f59e0b,
   green status #16a34a, bg #f8fafc, text #111827
   ============================================================ */
:root{
  --purple:#6d28d9; --purple-d:#5b21b6; --purple-l:#ede9fe;
  --orange:#f59e0b; --orange-d:#d97706;
  --ok:#16a34a; --err:#dc2626;
  --bg:#ffffff; --bg-soft:#f8fafc; --line:#e5e7eb;
  --ink:#111827; --muted:#6b7280;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Microsoft YaHei','微软雅黑','PingFang SC','Hiragino Sans GB','WenQuanYi Micro Hei',-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--purple);text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.center{text-align:center}
.muted{color:var(--muted);font-size:14px}
code{background:var(--bg-soft);padding:2px 6px;border-radius:4px;font-size:13px;color:var(--purple-d)}
h1,h2,h3{color:var(--ink)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border-radius:8px;
  border:1.5px solid transparent;cursor:pointer;font-size:15px;font-weight:500;
  background:#f3f4f6;color:var(--ink);transition:.15s;text-decoration:none}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--purple);color:#fff}
.btn-primary:hover{background:var(--purple-d)}
.btn-outline{background:#fff;border-color:var(--purple);color:var(--purple)}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-d)}
.btn-green{background:var(--ok);color:#fff}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:10px}
.btn-block{display:flex;width:100%;justify-content:center}
.btn-sm{padding:6px 14px;font-size:13px;border-radius:6px}
.btn.danger{background:var(--err);color:#fff}
.btn .arrow{font-weight:700}

/* ---------- Top nav (public) ---------- */
.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink)}
.brand .logo{width:34px;height:22px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--ink);font-size:14.5px;font-weight:500}
.nav-links a:hover{color:var(--purple)}
.nav-cta{display:flex;gap:12px;align-items:center}
.lang-switch{font-size:12px!important;color:var(--muted)!important;border:1px solid var(--line);
  padding:4px 10px;border-radius:6px}

/* ---------- Hero ---------- */
.hero{position:relative;background:#fff;text-align:center;padding:90px 0 110px;overflow:hidden;
  background-image:radial-gradient(circle at 1px 1px,#e5e7eb 1px,transparent 0);
  background-size:40px 40px;}
.hero h1{font-size:84px;line-height:1.05;font-weight:800;letter-spacing:-.02em;margin:0 0 24px}
.hero .sub{font-size:18px;color:var(--muted);margin-bottom:36px}
.hero .btn{font-size:16px;padding:14px 36px}

/* ---------- Sections ---------- */
.section{padding:80px 0}
.section.soft{background:var(--bg-soft)}
.section h2{text-align:center;font-size:36px;margin:0 0 12px;font-weight:800;letter-spacing:-.01em}
.section .lead{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 48px}
.grid{display:grid;gap:24px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px}
.feature-card h3{margin:0 0 8px;font-size:18px}
.feature-card p{margin:0;color:var(--muted);font-size:14.5px}
.feature-card .icon{width:40px;height:40px;border-radius:10px;background:var(--purple-l);
  color:var(--purple);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}

/* 3 steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center}
.step-num{width:48px;height:48px;border-radius:50%;background:var(--purple);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;margin-bottom:16px}

/* checklist */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 40px;max-width:800px;margin:0 auto}
.checklist li{list-style:none;padding-left:28px;position:relative;font-size:15px}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}

/* footer */
.footer{background:#fff;border-top:1px solid var(--line);padding:28px 0;font-size:13px;color:var(--muted)}
.footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}

/* ---------- Auth pages ---------- */
.auth{padding:60px 0;max-width:420px;margin:0 auto}
.auth h1{font-size:28px;text-align:center;margin-bottom:8px}
.auth .sub{text-align:center;color:var(--muted);margin-bottom:28px}
.auth form label,.panel-card form label{display:block;margin:14px 0;font-size:14px;font-weight:500}
input[type=text],input[type=email],input[type=password],input[type=number],select,textarea{
  width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:8px;font-size:15px;
  margin-top:6px;background:#fff;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--purple)}
.check{display:flex;gap:8px;align-items:center;font-size:13px!important}
.check input{margin:0;width:auto}
.field-hint{display:block;font-size:12px;color:var(--err);margin-top:4px;min-height:14px}
.pw-strength{display:flex;gap:4px;margin-top:6px}
.pw-strength span{flex:1;height:4px;background:#e5e7eb;border-radius:2px}
.pw-strength span.s1{background:#dc2626}
.pw-strength span.s2{background:#f59e0b}
.pw-strength span.s3{background:#16a34a}
.pw-wrap{position:relative;display:block}
.pw-wrap input{padding-right:38px;width:100%}
.pw-eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);
  background:none;border:none;cursor:pointer;padding:4px;font-size:16px;line-height:1}
.row-between{display:flex;justify-content:space-between;font-size:13px;margin:10px 0;align-items:center}
.row-inline{display:flex;gap:10px;align-items:flex-end}
.alert{padding:12px 16px;border-radius:8px;margin:12px 0;font-size:14px}
.alert.ok{background:#dcfce7;color:#166534}
.alert.err{background:#fee2e2;color:#991b1b}
.alert.warn{background:#fef3c7;color:#92400e}

/* ============================================================
   Client area (dashboard)
   ============================================================ */
body.app{background:var(--bg-soft);min-height:100vh}
.ca-topbar{background:#fff;border-bottom:1px solid var(--line);padding:0 32px;
  display:flex;align-items:center;justify-content:space-between;height:64px}
.ca-topbar .brand{font-size:17px}
.ca-tabs{background:#fff;border-bottom:1px solid var(--line);padding:0 32px;
  display:flex;gap:28px;overflow-x:auto}
.ca-tabs a{padding:16px 4px;color:var(--ink);font-size:14.5px;font-weight:500;
  border-bottom:3px solid transparent;white-space:nowrap;display:flex;align-items:center;gap:6px}
.ca-tabs a.active{color:var(--purple);border-bottom-color:var(--purple)}
.ca-tabs a:hover{color:var(--purple)}
.ca-body{padding:32px;max-width:1280px;margin:0 auto}
.ca-eyebrow{font-size:12px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;font-weight:600}
.ca-title{font-size:26px;font-weight:800;margin:4px 0 24px}

.panel-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:20px}
.panel-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.panel-card-head h3{margin:0;font-size:17px}

/* account row */
.acc-row{display:flex;align-items:center;gap:16px;padding:16px;border-radius:10px;cursor:pointer;
  border-bottom:1px solid var(--line)}
.acc-row:hover{background:var(--bg-soft)}
.acc-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:20px;flex-shrink:0}
.acc-icon.green{background:#22c55e}
.acc-icon.purple{background:#8b5cf6}
.acc-icon.gray{background:#9ca3af}
.acc-info strong{display:block;font-size:15px}
.acc-info span{font-size:13px;color:var(--muted)}
.ca-footer{display:flex;justify-content:space-between;color:var(--muted);font-size:14px;margin-top:16px}

.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge.active{background:#dcfce7;color:#166534}
.badge.suspended{background:#fee2e2;color:#991b1b}
.badge.pending{background:#fef9c3;color:#854d0e}
.badge.failed{background:#fee2e2;color:#991b1b}

/* detail page: 3 columns */
.ca-detail{display:grid;grid-template-columns:200px 1fr 320px;gap:20px}
.ca-side .side-link{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;
  color:var(--ink);font-size:14px;margin-bottom:2px;text-decoration:none}
.ca-side .side-link.active,.ca-side .side-link:hover{background:var(--purple-l);color:var(--purple)}
.ca-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px}
.ca-actions .btn{justify-content:center;padding:14px}
.ca-detail-right .kv{margin-bottom:14px}
.ca-detail-right .kv label{display:block;font-size:11px;letter-spacing:.08em;color:var(--muted);
  text-transform:uppercase;font-weight:600;margin-bottom:2px}
.pw-row{display:flex;gap:8px;align-items:center}
.pw-row .btn{padding:4px 10px;font-size:12px}

/* ads */
.ad-slot{margin:12px 0;text-align:center}

/* tables (admin) */
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);
  border-radius:12px;overflow:hidden}
.table th,.table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
.table th{background:var(--bg-soft);font-weight:600;font-size:13px}
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;text-align:center}
.stat-card strong{display:block;font-size:32px;color:var(--purple)}
.stat-card span{color:var(--muted);font-size:13px}
.searchbar{display:flex;gap:8px;margin-bottom:16px}
.actions a,.actions form{display:inline-block}

@media(max-width:900px){
  .hero h1{font-size:48px}
  .grid.cols-3,.grid.cols-2,.steps,.checklist{grid-template-columns:1fr}
  .ca-detail{grid-template-columns:1fr}
  .nav-links{display:none}
  .ca-tabs{padding:0 16px}
  .ca-body{padding:16px}
}