/* StarVote 星投云 · 科技感深色主题 */
:root{
  --bg:#070b14; --bg2:#0b1120; --card:rgba(17,25,45,.72); --border:rgba(94,140,255,.18);
  --text:#e6ecff; --muted:#8494b8; --primary:#4f7cff; --cyan:#22d3ee; --violet:#a855f7;
  --green:#34d399; --red:#f87171; --yellow:#fbbf24;
  --grad:linear-gradient(135deg,#4f7cff 0%,#22d3ee 50%,#a855f7 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;min-height:100vh;line-height:1.6}
a{color:var(--cyan);text-decoration:none}
a:hover{opacity:.85}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.main{padding:32px 20px 64px;min-height:calc(100vh - 160px)}
.text-muted{color:var(--muted)}
.text-center{text-align:center}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}

/* 背景动效 */
.bg-grid{position:fixed;inset:0;background-image:linear-gradient(rgba(79,124,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(79,124,255,.05) 1px,transparent 1px);background-size:44px 44px;pointer-events:none;z-index:0}
.bg-glow{position:fixed;border-radius:50%;filter:blur(120px);opacity:.22;pointer-events:none;z-index:0}
.bg-glow-1{width:520px;height:520px;background:#4f7cff;top:-140px;left:-120px}
.bg-glow-2{width:460px;height:460px;background:#a855f7;bottom:-160px;right:-100px}
.navbar,.main,.footer,.install-wrap{position:relative;z-index:1}

/* 导航 */
.navbar{background:rgba(7,11,20,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-size:19px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:6px}
.logo-icon{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:22px}
.nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav-links a{color:var(--muted);font-size:14px}
.nav-links a:hover{color:var(--text)}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:26px;backdrop-filter:blur(12px);box-shadow:0 8px 32px rgba(0,0,0,.35)}
.card+.card{margin-top:20px}
.card h2,.card h3{margin-bottom:14px}
.card-title{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* 按钮 */
.btn{display:inline-block;padding:10px 22px;border-radius:10px;border:1px solid transparent;font-size:14px;cursor:pointer;transition:.2s;color:var(--text);background:rgba(79,124,255,.12);border-color:var(--border)}
.btn:hover{transform:translateY(-1px);box-shadow:0 4px 18px rgba(79,124,255,.35)}
.btn-primary{background:var(--grad);border:none;font-weight:600;color:#fff}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--muted)}
.btn-danger{background:rgba(248,113,113,.14);border-color:rgba(248,113,113,.4);color:var(--red)}
.btn-sm{padding:6px 14px;font-size:13px;border-radius:8px}
.btn-block{display:block;width:100%;text-align:center}

/* 表单 */
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
input[type=text],input[type=password],input[type=email],input[type=number],input[type=tel],input[type=datetime-local],select,textarea{
  width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--border);background:rgba(7,11,20,.6);color:var(--text);font-size:14px;outline:none;transition:.2s;font-family:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,124,255,.18)}
textarea{resize:vertical;min-height:90px}
::placeholder{color:#55617e}

/* 提示 */
.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:14px;border:1px solid}
.alert-success{background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.35);color:var(--green)}
.alert-error{background:rgba(248,113,113,.1);border-color:rgba(248,113,113,.35);color:var(--red)}
.alert-warning{background:rgba(251,191,36,.1);border-color:rgba(251,191,36,.35);color:var(--yellow)}
.alert-info{background:rgba(34,211,238,.1);border-color:rgba(34,211,238,.35);color:var(--cyan)}

/* 表格 */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{padding:11px 12px;text-align:left;border-bottom:1px solid rgba(94,140,255,.1)}
.table th{color:var(--muted);font-weight:500;font-size:13px}
.table tr:hover td{background:rgba(79,124,255,.05)}
.table-wrap{overflow-x:auto}

/* 标签 */
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;border:1px solid}
.badge-open{background:rgba(52,211,153,.12);color:var(--green);border-color:rgba(52,211,153,.4)}
.badge-closed{background:rgba(132,148,184,.12);color:var(--muted);border-color:rgba(132,148,184,.4)}
.badge-draft{background:rgba(251,191,36,.12);color:var(--yellow);border-color:rgba(251,191,36,.4)}

/* 首页 Hero */
.hero{text-align:center;padding:56px 20px 40px}
.hero h1{font-size:40px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25}
.hero p{color:var(--muted);margin-top:12px;font-size:16px}
.hero .btn{margin:24px 6px 0}
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin:28px 0}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;text-align:center}
.stat-num{font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{color:var(--muted);font-size:13px;margin-top:4px}

/* 问卷列表 */
.survey-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}
.survey-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px;transition:.25s;display:block;color:var(--text)}
.survey-card:hover{transform:translateY(-3px);border-color:rgba(79,124,255,.5);box-shadow:0 10px 30px rgba(79,124,255,.18)}
.survey-card h3{font-size:17px;margin-bottom:8px}
.survey-card .desc{color:var(--muted);font-size:13px;min-height:38px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.survey-meta{display:flex;gap:14px;margin-top:14px;font-size:12px;color:var(--muted);flex-wrap:wrap}

/* 投票页 */
.question{margin-bottom:26px;padding-bottom:20px;border-bottom:1px dashed rgba(94,140,255,.15)}
.question:last-child{border-bottom:none}
.q-title{font-weight:600;margin-bottom:12px}
.q-title .req{color:var(--red);margin-left:4px}
.opt-item{display:flex;align-items:center;gap:10px;padding:11px 14px;border:1px solid var(--border);border-radius:10px;margin-bottom:8px;cursor:pointer;transition:.15s;background:rgba(7,11,20,.35)}
.opt-item:hover{border-color:var(--primary)}
.opt-item input{accent-color:var(--primary);width:16px;height:16px}

/* 结果条 */
.result-row{margin-bottom:14px}
.result-label{display:flex;justify-content:space-between;font-size:14px;margin-bottom:5px}
.result-bar{height:10px;border-radius:999px;background:rgba(94,140,255,.12);overflow:hidden}
.result-bar i{display:block;height:100%;border-radius:999px;background:var(--grad);transition:width .8s ease}
.chart-box{background:rgba(7,11,20,.4);border:1px solid var(--border);border-radius:14px;padding:18px;margin-top:20px}
.chart-box canvas{max-height:320px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:760px){.grid-2{grid-template-columns:1fr}.hero h1{font-size:30px}}

/* 后台侧栏布局 */
.admin-layout{display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:start}
.admin-side{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:14px;position:sticky;top:80px}
.admin-side a{display:block;padding:11px 14px;border-radius:10px;color:var(--muted);font-size:14px;margin-bottom:4px}
.admin-side a:hover{color:var(--text);background:rgba(79,124,255,.1)}
.admin-side a.active{background:var(--grad);color:#fff;font-weight:600}
@media(max-width:860px){.admin-layout{grid-template-columns:1fr}.admin-side{position:static;display:flex;flex-wrap:wrap;gap:4px}.admin-side a{margin:0}}

/* 登录/注册居中卡 */
.auth-wrap{max-width:430px;margin:6vh auto}
.auth-wrap .card{padding:34px}
.auth-title{text-align:center;font-size:24px;font-weight:700;margin-bottom:6px}
.auth-sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:24px}
.auth-foot{text-align:center;margin-top:18px;font-size:13px;color:var(--muted)}

/* 安装器 */
.install-wrap{max-width:720px;margin:5vh auto;padding:0 16px}
.install-steps{display:flex;gap:8px;margin-bottom:24px}
.install-steps span{flex:1;text-align:center;padding:9px;border-radius:10px;background:rgba(79,124,255,.08);color:var(--muted);font-size:13px;border:1px solid var(--border)}
.install-steps span.on{background:var(--grad);color:#fff;font-weight:600;border:none}
.install-steps span.done{background:rgba(52,211,153,.15);color:var(--green)}

/* 分页 */
.pager{display:flex;gap:8px;justify-content:center;margin-top:22px;flex-wrap:wrap}
.pager a,.pager span{padding:7px 13px;border-radius:8px;border:1px solid var(--border);color:var(--muted);font-size:13px}
.pager .cur{background:var(--grad);color:#fff;border:none}

.footer{border-top:1px solid var(--border);padding:22px 0;color:var(--muted);font-size:13px}
.footer .container{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
code{background:rgba(79,124,255,.12);padding:2px 7px;border-radius:6px;font-size:13px;color:var(--cyan)}


/* 全终端适配补充：小屏导航、卡片、表格与分享按钮 */
html { -webkit-text-size-adjust: 100%; }
img, canvas, video, iframe { max-width: 100%; }
input, select, textarea, button { max-width: 100%; }
.survey-heading { align-items: flex-start; }
.survey-heading h2 { min-width: 0; overflow-wrap: anywhere; }
.share-survey { flex-shrink: 0; }
@media (max-width: 760px) {
  .container { padding-left: 14px; padding-right: 14px; }
  .main { padding: 20px 14px 42px; }
  .navbar .nav-inner { height: auto; min-height: 58px; padding-top: 10px; padding-bottom: 10px; align-items: flex-start; gap: 12px; }
  .logo { flex-shrink: 0; font-size: 17px; }
  .nav-links { justify-content: flex-end; gap: 8px 12px; }
  .nav-links a { font-size: 13px; }
  .hero { padding: 36px 6px 26px; }
  .hero h1 { font-size: clamp(25px, 7vw, 34px); }
  .hero p { font-size: 14px; }
  .stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 18px 0; }
  .stat-card { padding: 14px 10px; }
  .stat-num { font-size: 25px; }
  .survey-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .card { padding: 18px 14px; border-radius: 13px; }
  .survey-card { padding: 17px 14px; }
  .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .survey-heading { flex-direction: column; }
  .survey-heading .share-survey { align-self: flex-start; }
  .card-title { align-items: flex-start; }
  .card-title form { min-width: 0; }
  .table { min-width: 650px; }
  .chart-box { padding: 10px; }
  .auth-wrap .card { padding: 24px 18px; }
}
@media (max-width: 420px) {
  .navbar .nav-inner { flex-direction: column; align-items: stretch; }
  .nav-links { justify-content: flex-start; }
  .btn { padding: 9px 14px; }
  .btn-sm { padding: 6px 10px; }
  .install-steps { flex-direction: column; }
}