:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-2: #eef3fb;
  --line: #d7e0ee;
  --text: #172033;
  --muted: #63718a;
  --primary: #4965f2;
  --primary-dark: #3b50c7;
  --teal: #0f766e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --success: #10b981;
  --sidebar: #ffffff;
  --sidebar-text: #334155;
  --nav-active: #e9eefc;
  --input-bg: #ffffff;
  --table-head: #f1f5fb;
  --shadow: 0 18px 50px rgba(31, 45, 70, .10);
}

:root[data-theme="dark"] {
  --bg: #0f111a;
  --panel: #18233d;
  --panel-2: #101827;
  --line: #27385f;
  --text: #edf2ff;
  --muted: #91a0bb;
  --sidebar: rgba(10, 13, 25, .94);
  --sidebar-text: #e5e7eb;
  --nav-active: #22314f;
  --input-bg: #0f111a;
  --table-head: #121b2f;
  --shadow: 0 18px 50px rgba(0,0,0,.22);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { -webkit-tap-highlight-color: transparent; }
.app { min-height: 100vh; display: grid; grid-template-columns: 220px minmax(0, 1fr); max-width: 100%; }
.sidebar { background: var(--sidebar); color: var(--sidebar-text); padding: 22px 16px; border-right: 1px solid var(--line); }
.brand { font-size: 18px; font-weight: 700; margin-bottom: 28px; }
.brand small { display: block; margin-top: 4px; color: #94a3b8; font-size: 12px; font-weight: 500; }
.nav a { display: block; padding: 11px 12px; border-radius: 8px; color: var(--sidebar-text); margin-bottom: 5px; }
.nav a.active, .nav a:hover { background: var(--nav-active); color: var(--text); }
.main { min-width: 0; overflow: hidden; }
.topbar {
  height: 58px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
}
.content { padding: 24px; min-width: 0; }
.page-title { margin: 0 0 18px; font-size: 24px; }
.grid { display: grid; gap: 16px; }
.stats { grid-template-columns: repeat(6, minmax(120px, 1fr)); }
.stat, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
.stat { padding: 18px; }
.stat .label { color: var(--muted); margin-bottom: 8px; }
.stat .value { font-size: 28px; font-weight: 700; }
.panel { padding: 18px; margin-bottom: 18px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.toolbar { display: flex; gap: 10px; align-items: center; justify-content: space-between; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar > h1, .toolbar > h2 { margin-top: 0; margin-bottom: 0; }
.toolbar > div { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; }
input, select, textarea {
  display: block;
  max-width: 100%;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  background: var(--input-bg);
  color: var(--text);
  font: inherit;
}
input.check { width: auto; margin-right: 6px; }
textarea { min-height: 88px; resize: vertical; }
.mono-input { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-x: auto; }
.filters input, .filters select { width: 230px; }
.twofa-setup {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}
.twofa-qr {
  width: 240px;
  min-height: 240px;
  display: grid;
  place-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}
.twofa-qr img {
  width: 220px;
  height: 220px;
  display: block;
}
.twofa-fields { align-content: start; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 12px;
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  min-height: 38px;
}
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: #fff; background: var(--danger); border-color: var(--danger); }
.btn.small { padding: 6px 9px; min-height: 30px; }
table { width: 100%; border-collapse: collapse; }
.panel table { min-width: 760px; }
th, td { border-bottom: 1px solid var(--line); padding: 11px 8px; text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; background: var(--table-head); }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 3px 8px; font-size: 12px; background: #24314e; color: #dbeafe; }
.badge.success { background: #dcfce7; color: var(--success); }
.badge.danger { background: #fee2e2; color: var(--danger); }
.badge.warning { background: #fef3c7; color: var(--warning); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: grid; gap: 6px; color: var(--muted); font-weight: 600; }
.muted { color: var(--muted); }
.pagination { display: flex; gap: 8px; align-items: center; margin-top: 14px; flex-wrap: wrap; }
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-box { width: min(390px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.alert { border-radius: 6px; padding: 10px 12px; background: #fee2e2; color: var(--danger); margin-bottom: 14px; }
.notice { border-radius: 6px; padding: 10px 12px; background: #dcfce7; color: var(--success); margin-bottom: 14px; }
.notice.warning { background: #fef3c7; color: #a16207; }
.muted-notice { background: var(--panel-2); color: var(--muted); }
.log-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 10px 0; }
code { background: #eef2f7; border-radius: 4px; padding: 2px 5px; }
.code-block, pre {
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 18px;
}
.channel-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  min-height: 292px;
}
.channel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.channel-head h2 { margin: 0; font-size: 18px; }
.channel-fields { display: grid; gap: 14px; }
.channel-actions { display: flex; gap: 10px; margin-top: 20px; }
.btn.test { background: #0f4f5d; border-color: #168397; color: #5fffdc; }
.settings-actions { margin-top: 16px; }
.switch input { display: none; }
.switch span {
  width: 52px;
  height: 28px;
  border-radius: 999px;
  background: #53617c;
  display: block;
  position: relative;
}
.switch span::after {
  content: "";
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  left: 3px;
  top: 3px;
  transition: .18s ease;
}
.switch input:checked + span { background: #08d6a0; }
.switch input:checked + span::after { transform: translateX(24px); }
.db-actions { grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); }

pre {
  white-space: pre-wrap;
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.top-actions { display: inline-flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.theme-toggle {
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
}

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: calc(12px + env(safe-area-inset-top)) 14px 10px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 28px rgba(15, 23, 42, .08);
  }
  .brand {
    margin-bottom: 10px;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
  }
  .brand small { margin-top: 0; text-align: right; }
  .nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a {
    flex: 0 0 auto;
    margin-bottom: 0;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
  }
  .topbar {
    height: auto;
    min-height: 56px;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
  }
  .content { padding: 16px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: 1fr; }
  .channel-grid, .db-actions { grid-template-columns: 1fr; }
  .filters input, .filters select { width: 100%; }
  .filters { flex: 1 1 280px; }
}

@media (max-width: 560px) {
  body { font-size: 13px; }
  .app, .main, .content, .panel, .toolbar, .filters { max-width: 100vw; }
  .sidebar { padding-left: max(12px, env(safe-area-inset-left)); padding-right: max(12px, env(safe-area-inset-right)); }
  .brand { font-size: 16px; }
  .brand small { display: none; }
  .topbar {
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
    flex-direction: column;
  }
  .top-actions { width: 100%; justify-content: space-between; gap: 8px; }
  .content {
    padding: 12px max(12px, env(safe-area-inset-right)) calc(18px + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  }
  .page-title { font-size: 21px; margin-bottom: 12px; }
  .stats { grid-template-columns: 1fr; gap: 10px; }
  .stat { padding: 14px; }
  .stat .value { font-size: 24px; }
  .panel { padding: 12px; border-radius: 10px; margin-bottom: 12px; }
  .toolbar {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
  }
  form.panel.toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    justify-content: stretch;
  }
  .toolbar > div,
  .filters,
  .log-actions,
  .channel-actions,
  .settings-actions {
    width: 100%;
  }
  .toolbar > div {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .filters {
    flex: none;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .filters input,
  .filters select {
    width: 100%;
    min-width: 0;
  }
  .toolbar .btn,
  .log-actions .btn,
  .toolbar button,
  .filters + .btn,
  .channel-actions .btn,
  .settings-actions .btn,
  form.panel > .btn,
  form.panel > a.btn {
    width: 100%;
  }
  input, select, textarea { font-size: 16px; min-height: 42px; }
  .twofa-setup { grid-template-columns: minmax(0, 1fr); }
  .twofa-qr { width: 100%; min-height: 220px; }
  .btn { min-height: 42px; padding: 10px 12px; }
  .btn.small { min-height: 34px; }
  th, td { padding: 10px 8px; }
  .panel table { min-width: 640px; width: max-content; }
  .pagination .btn { min-width: 40px; }
  .login { padding: 14px; }
  .login-box { padding: 18px; border-radius: 10px; }
  .channel-card { padding: 16px; min-height: auto; border-radius: 10px; }
  .channel-head { align-items: flex-start; gap: 12px; }
  pre { max-width: 100%; overflow-x: auto; }
}