:root {
  --bg: #0e1117;
  --panel: #161b24;
  --panel-2: #1d2430;
  --line: #2a3240;
  --text: #e6edf3;
  --muted: #8a94a6;
  --accent: #6366f1;
  --accent-2: #4f46e5;
  --green: #34d399;
  --red: #f87171;
  --amber: #fbbf24;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: radial-gradient(1200px 600px at 80% -10%, #1b2333 0%, var(--bg) 55%);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.spacer { flex: 1; }

/* buttons */
.btn { border: 1px solid var(--line); background: var(--panel-2); color: var(--text);
  padding: 9px 16px; border-radius: 10px; cursor: pointer; font-weight: 600; font-size: 14px;
  transition: .15s ease; }
.btn:hover { border-color: #3a455a; transform: translateY(-1px); }
.btn.primary { background: linear-gradient(180deg, var(--accent), var(--accent-2)); border-color: transparent; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--red); border-color: #5b2a30; background: #241318; }
.btn.small { padding: 6px 12px; font-size: 13px; }
.icon-btn { background: none; border: none; color: var(--muted); font-size: 18px; cursor: pointer; }

/* login */
.login-screen { min-height: 100vh; display: grid; place-items: center; }
.login-card { width: 340px; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 12px; }
.login-card .brand { font-size: 20px; font-weight: 700; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.login-card input { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; color: var(--text); font-size: 15px; }
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card .btn { margin-top: 6px; }
.brand .logo { color: var(--accent); }

/* topbar */
.topbar { display: flex; align-items: center; gap: 18px; padding: 14px 28px;
  border-bottom: 1px solid var(--line); background: rgba(13,17,23,.6); backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10; }
.topbar .brand { font-weight: 700; }
.tabs .tab { color: var(--muted); font-weight: 600; padding: 6px 0; }
.tabs .tab.active { color: var(--text); border-bottom: 2px solid var(--accent); }

main { max-width: 980px; margin: 0 auto; padding: 32px 24px 80px; }
.hero h1 { font-size: 28px; margin: 0 0 6px; }
.hero p { max-width: 640px; }
.section-title { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted);
  margin: 36px 0 14px; display: flex; align-items: center; gap: 10px; }
.pill { background: var(--panel-2); border: 1px solid var(--line); border-radius: 999px;
  padding: 1px 9px; font-size: 12px; color: var(--muted); }

/* provider cards */
.provider-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; }
.provider { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; cursor: pointer; transition: .15s ease; display: flex; gap: 14px; align-items: center; }
.provider:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.provider .pic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  font-size: 22px; background: var(--panel-2); flex: none; }
.provider h4 { margin: 0 0 2px; font-size: 15px; }
.provider small { color: var(--muted); }

/* channel list */
.channel-list { display: flex; flex-direction: column; gap: 10px; }
.channel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; display: flex; align-items: center; gap: 16px; }
.channel .pic { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  font-size: 20px; background: var(--panel-2); flex: none; }
.channel .info { flex: 1; min-width: 0; }
.channel .info .name { font-weight: 650; }
.channel .info .sub { color: var(--muted); font-size: 13px; display: flex; gap: 10px; flex-wrap: wrap; margin-top: 2px; }
.channel .token { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); }
.badge { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; border: 1px solid; }
.badge.on { color: var(--green); border-color: #1f5641; background: #11261f; }
.badge.off { color: var(--amber); border-color: #5b4a1f; background: #241f11; }
.badge.nokey { color: var(--red); border-color: #5b2a30; background: #241318; }
.channel .actions { display: flex; gap: 8px; flex: none; }
.empty { color: var(--muted); padding: 24px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); }

/* modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: grid; place-items: center; z-index: 50; }
.modal-card { width: 440px; max-width: 92vw; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.modal-head h3 { margin: 0; font-size: 17px; }
.modal-body { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.modal-body label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.modal-body input { background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; color: var(--text); font-size: 14px; }
.modal-body input:focus { outline: none; border-color: var(--accent); }
.modal-body .hint { font-size: 12px; color: var(--muted); margin-top: -4px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 20px; border-top: 1px solid var(--line); }

.error { color: var(--red); font-size: 13px; padding: 0 20px 16px; }
.login-card .error { padding: 0; }

/* toast */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px;
  box-shadow: var(--shadow); z-index: 60; max-width: 80vw; }
.toast.ok { border-color: #1f5641; }
.toast.bad { border-color: #5b2a30; }