/* totp-tools — minimal, modern, single-file stylesheet */
*,*::before,*::after{box-sizing:border-box}
:root{
  --bg:#f4f7fa;
  --panel:#ffffff;
  --panel-2:#f7f9fa;
  --border:rgba(50,174,77,.55);
  --border-strong:rgba(50,174,77,.9);
  --text:#3b4b5e;
  --muted:#5e6e80;
  --accent:#009688;
  --accent-2:#00d708;
  --danger:#ff6767;
  --danger-2:#ae4c1a;
  --shadow:0 8px 28px rgba(31,45,66,.08);
  --radius:14px;
  --radius-sm:8px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1419;
    --panel:#1a2028;
    --panel-2:#222934;
    --text:#e6ecf3;
    --muted:#9aa7b8;
    --shadow:0 8px 28px rgba(0,0,0,.4);
  }
}
html,body{margin:0;padding:0}
body{
  font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  word-break:break-all;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
hr{border:0;border-top:1px solid rgba(0,0,0,.06);margin:18px 0;width:100%}
@media (prefers-color-scheme: dark){hr{border-top-color:rgba(255,255,255,.08)}}

.layout{max-width:1180px;margin:0 auto;padding:24px 16px;display:grid;grid-template-columns:220px 1fr;gap:20px}
@media (max-width:820px){.layout{grid-template-columns:1fr}}

.sidebar{
  position:sticky;top:24px;align-self:start;
  background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:14px 10px;
}
.sidebar .brand{display:flex;align-items:center;gap:10px;padding:8px 12px 14px;font-weight:700;font-size:16px}
.sidebar .brand-dot{width:14px;height:14px;border-radius:50%;background:linear-gradient(142deg,var(--accent) 0%,var(--accent-2) 100%)}
.sidebar nav{display:flex;flex-direction:column;gap:2px}
.sidebar nav a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  color:var(--muted);font-weight:500;
}
.sidebar nav a:hover{background:var(--panel-2);color:var(--text);text-decoration:none}
.sidebar nav a.active{background:linear-gradient(142deg,rgba(0,150,136,.12),rgba(0,215,8,.08));color:var(--accent);font-weight:600}
.sidebar nav a .ico{width:18px;display:inline-flex;justify-content:center;font-size:16px}
@media (max-width:820px){
  .sidebar{position:static;display:flex;align-items:center;gap:8px;overflow-x:auto;padding:10px}
  .sidebar .brand{padding:8px 12px}
  .sidebar nav{flex-direction:row;flex:1}
  .sidebar nav a{white-space:nowrap;padding:8px 12px}
}

.panel{background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.panel h1{font-size:1.7rem;margin:0 0 6px;color:var(--text);font-weight:700}
.panel .lead{color:var(--muted);margin:0 0 6px}
.section{margin-bottom:8px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.col{display:flex;flex-direction:column;gap:8px}

.input,.textarea,select{
  width:100%;background:var(--panel-2);border:0;border-radius:10px;color:var(--text);
  box-shadow:inset 0 0 0 1px var(--border);padding:12px 16px;outline:none;font-size:14px;
  font-weight:600;transition:box-shadow .15s ease,background .15s ease;
}
.input:focus,.textarea:focus,select:focus{box-shadow:inset 0 0 0 2px var(--border-strong);background:var(--panel)}
.textarea{height:140px;font-weight:400;resize:vertical;font-family:inherit}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:0;border-radius:10px;cursor:pointer;
  font-weight:600;font-size:14px;padding:9px 18px;color:#fff;
  background:linear-gradient(142deg,var(--accent) 0%,var(--accent-2) 100%);
  box-shadow:inset -2px -2px 4px rgba(0,0,0,.1),inset 2px 2px 4px rgba(255,255,255,.18);
  transition:transform .1s ease,box-shadow .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.ghost{
  background:transparent;color:var(--accent);
  box-shadow:inset 0 0 0 1px var(--border-strong);
}
.btn.ghost:hover{background:var(--panel-2)}
.btn.danger{background:linear-gradient(142deg,var(--danger) 0%,var(--danger-2) 100%)}
.btn-sm{padding:6px 12px;font-size:12px}

.kv{display:flex;gap:8px;align-items:baseline;color:var(--muted);font-size:13px;margin:6px 0;flex-wrap:wrap}
.kv .label{min-width:90px;color:var(--muted)}
.kv .value{color:var(--text);font-weight:600;font-feature-settings:"tnum" 1}
.code{font:600 1.6rem/1.2 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:rgb(50,174,77);letter-spacing:.18em}
.code.warn{color:var(--danger)}

footer.foot{margin-top:18px;color:var(--muted);text-align:center;font-size:12px;opacity:.85}

#notification-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.notification{background:rgba(20,20,20,.92);color:#fff;padding:11px 16px;border-radius:10px;
  box-shadow:0 8px 24px rgba(0,0,0,.35);opacity:0;transform:translateX(100%);
  transition:opacity .35s ease,transform .35s ease;font-size:13px;max-width:280px}
.notification.show{opacity:1;transform:translateX(0)}

.modal{display:none;position:fixed;inset:0;width:100%;height:100%;overflow:auto;background:rgba(0,0,0,.55);z-index:1000}
.modal.open{display:block}
.modal-content{background:var(--panel);color:var(--text);padding:24px;position:fixed;
  top:50%;left:50%;transform:translate(-50%,-50%);border-radius:var(--radius);
  max-width:340px;width:calc(100% - 32px);text-align:center;box-shadow:var(--shadow)}
.modal-content .close{position:absolute;top:6px;right:14px;font-size:26px;color:var(--muted);
  cursor:pointer;line-height:1;font-weight:700}
.modal-content .close:hover{color:var(--text)}
#qrcode{width:240px;height:240px;margin:8px auto;display:block;background:#fff;padding:6px;border-radius:8px}
.qr-text{margin:14px 0 0;color:var(--muted);font-size:13px}

.tip{background:var(--panel-2);border-radius:10px;padding:14px;color:var(--muted);font-size:13px;line-height:1.7}
.tip strong{color:var(--text)}
.tip .demo-key{cursor:pointer;color:var(--accent);font-weight:700}
.tip .demo-key:hover{text-decoration:underline}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:640px){.grid-2{grid-template-columns:1fr}}

.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.tool-card{background:var(--panel-2);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:6px;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.04);transition:transform .15s ease}
@media (prefers-color-scheme: dark){.tool-card{box-shadow:inset 0 0 0 1px rgba(255,255,255,.04)}}
.tool-card:hover{transform:translateY(-2px)}
.tool-card .name{font-weight:700;color:var(--text)}
.tool-card .desc{color:var(--muted);font-size:13px}
.tool-card a{margin-top:auto;font-weight:600}

img.preview{max-width:100%;height:auto;border-radius:10px;display:block}
canvas.preview{max-width:100%;height:auto;border-radius:10px;display:block}

.swap-row{display:flex;gap:10px;align-items:center}
.swap-row .input{flex:1}
.swap-row select{flex:0 0 130px}

table.rates{width:100%;border-collapse:collapse;margin-top:10px;font-size:13px}
table.rates th,table.rates td{padding:9px 10px;border-bottom:1px solid rgba(0,0,0,.06);text-align:left}
@media (prefers-color-scheme: dark){table.rates th,table.rates td{border-bottom-color:rgba(255,255,255,.08)}}
table.rates th{color:var(--muted);font-weight:600}

.tabs{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap}
.tab{padding:8px 14px;border-radius:10px;cursor:pointer;color:var(--muted);font-weight:600;
  background:var(--panel-2);box-shadow:inset 0 0 0 1px rgba(0,0,0,.04);font-size:13px}
@media (prefers-color-scheme: dark){.tab{box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}}
.tab.active{color:var(--accent);box-shadow:inset 0 0 0 1px var(--border-strong)}

.text-counter{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-top:6px}
.text-counter span b{color:var(--text);font-weight:700}

.dropzone{border:2px dashed var(--border);border-radius:12px;padding:24px;text-align:center;color:var(--muted);
  background:var(--panel-2);transition:border-color .15s ease,background .15s ease;cursor:pointer}
.dropzone.over{border-color:var(--border-strong);background:var(--panel)}

.muted{color:var(--muted)}
.small{font-size:12px}
.center{text-align:center}
.flex{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* multi-account TOTP cards */
#list{display:flex;flex-direction:column;gap:14px;margin-top:14px}
.ghost-panel{padding:18px}
.acc-card{padding:18px}
.acc-row{display:flex;gap:14px;align-items:flex-start;flex-wrap:wrap}
.acc-meta{flex:1;min-width:0}
.acc-name{font-weight:700;font-size:15px;color:var(--text);outline:none;
  padding:2px 6px;border-radius:6px;display:inline-block;max-width:100%;
  word-break:break-all}
.acc-name:focus{background:var(--panel-2);box-shadow:inset 0 0 0 1px var(--border-strong)}
.acc-issuer{margin-bottom:6px}
.otp{font:700 2rem/1.1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--accent);letter-spacing:.18em;margin:8px 0 10px;font-feature-settings:"tnum" 1}
.otp.warn{color:var(--danger)}
.bar-track{height:6px;background:var(--panel-2);border-radius:3px;overflow:hidden;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.05)}
@media (prefers-color-scheme: dark){.bar-track{box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}}
.bar-fill{height:100%;width:100%;background:linear-gradient(142deg,var(--accent) 0%,var(--accent-2) 100%);
  transition:width 1s linear}
.bar-fill.warn{background:linear-gradient(142deg,var(--danger) 0%,var(--danger-2) 100%)}
.acc-ctrl{display:flex;flex-wrap:wrap;gap:6px;align-items:flex-start}
@media (max-width:560px){
  .acc-row{flex-direction:column}
  .acc-ctrl{width:100%}
}

/* camera scanner */
.scanner{margin-top:14px}
.scanner video{width:100%;max-height:360px;background:#000;border-radius:12px;display:block;object-fit:cover}