:root {
  --radius: 14px;
  --font: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
html[data-theme='light'] {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --text: #15233f;
  --muted: #6b7488;
  --border: #e3e6ec;
  --primary: #2f6bff;
  --primary-text: #fff;
  --error: #d23b4e;
}
html[data-theme='dark'] {
  --bg: #0f1626;
  --surface: #182238;
  --surface-2: #1f2b45;
  --text: #eef2f9;
  --muted: #93a0bb;
  --border: #2a3756;
  --primary: #4b82ff;
  --primary-text: #fff;
  --error: #ff6b7d;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background .3s, color .3s;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.topbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand { font-size: 1.05rem; letter-spacing: .2px; white-space: nowrap; }
.brand b { color: var(--primary); }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.who { color: var(--muted); font-size: .9rem; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
  width: 44px; height: 44px; border-radius: 12px; cursor: pointer;
  line-height: 1; transition: border-color .15s, color .15s, background .15s;
}
.icon-btn:hover { border-color: var(--primary); color: var(--primary); }
.bi { vertical-align: -0.125em; }
.icon-btn .bi { font-size: 1.25rem; line-height: 1; }
.icon-btn.sm { width: 34px; height: 34px; }
.icon-btn.sm .bi { font-size: 1.05rem; }
.btn .bi { margin-right: 2px; }
.invite-card h3 .bi, .sub-banner .bi { color: var(--primary); }
/* Keep long labels from widening flex/grid cards */
.kv li > span:first-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

#page { overflow-x: hidden; }
.container { max-width: 880px; margin: 0 auto; padding: 24px 20px 60px; }

/* Login */
.login-view { display: flex; justify-content: center; padding-top: 8vh; }
.login-card { max-width: 420px; text-align: center; }
.tg-login { display: flex; justify-content: center; margin: 18px 0; min-height: 48px; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
}

/* ===== Sidebar layout ===== */
.layout { display: flex; align-items: stretch; position: relative; }
.sidebar {
  width: 240px; flex-shrink: 0; display: flex; flex-direction: column;
  border-right: 1px solid var(--border); background: var(--surface);
  padding: 14px 12px; min-height: calc(100vh - 65px);
}
.sidebar-header { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 10px; padding: 0 4px; }
.side-brand { font-size: .98rem; font-weight: 600; white-space: nowrap; }
.side-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; overflow-y: auto; }
.sidebar-footer { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 8px; }
.signed-as { color: var(--muted); font-size: .82rem; margin-bottom: 8px; padding: 0 4px; }
.signed-as strong { color: var(--text); }
.side-logout {
  display: flex; align-items: center; gap: 10px; width: 100%;
  background: none; border: 1px solid var(--border); border-radius: 10px; cursor: pointer;
  color: var(--text); padding: 9px 12px; font-size: .92rem;
}
.side-logout:hover { border-color: var(--error); color: var(--error); }
.side-link {
  display: flex; align-items: center; gap: 10px; width: 100%;
  background: none; border: none; cursor: pointer; text-align: left;
  color: var(--muted); padding: 11px 14px; border-radius: 10px; font-size: .97rem;
}
.side-link:hover { background: var(--surface-2); color: var(--text); }
.side-link.active { background: color-mix(in srgb, var(--primary) 14%, var(--surface)); color: var(--primary); font-weight: 600; }
.side-link .bi { font-size: 1.05rem; width: 18px; text-align: center; flex-shrink: 0; }
.content { flex: 1; min-width: 0; max-width: 900px; padding: 24px 24px 60px; overflow-x: hidden; }
.sidebar-backdrop { display: none; }

/* Collapsed: hide the sidebar, content takes full width. */
.layout:not(.sidebar-open) .sidebar { display: none; }

@media (max-width: 720px) {
  .sidebar {
    position: fixed; top: 65px; left: 0; bottom: 0; z-index: 40;
    width: 240px; min-height: 0; transform: translateX(-100%); transition: transform .2s ease;
  }
  .layout.sidebar-open .sidebar { transform: none; }
  .layout.sidebar-open .sidebar-backdrop {
    display: block; position: fixed; inset: 65px 0 0 0; background: rgba(0,0,0,.4); z-index: 30;
  }
  .content { padding: 18px 16px 60px; }
}

/* Page-level sub-tabs (e.g. inside Admin) */
.subtabs { display: flex; gap: 6px; border-bottom: 1px solid var(--border); margin: 6px 0 20px; flex-wrap: wrap; }
.subtab {
  background: none; border: none; color: var(--muted); cursor: pointer;
  padding: 10px 14px; font-size: .95rem; border-bottom: 2px solid transparent;
}
.subtab:hover { color: var(--text); }
.subtab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

h2 { font-size: 1.4rem; margin-bottom: 6px; }
h3 { font-size: 1.05rem; margin-bottom: 12px; }
.mt { margin-top: 26px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.strong { font-weight: 600; }
.error { color: var(--error); }

/* Tariffs */
.tariffs { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-top: 16px; }
.tariff {
  text-align: left; cursor: pointer; background: var(--surface); color: var(--text);
  border: 2px solid var(--border); border-radius: var(--radius); padding: 18px;
  transition: border-color .15s, transform .1s;
}
.tariff:hover { transform: translateY(-2px); }
.tariff.selected { border-color: var(--primary); }
.tariff-title { font-weight: 600; color: var(--text); }
.tariff-price { font-size: 1.6rem; margin: 6px 0; color: var(--primary); }
.tariff-desc { color: var(--muted); font-size: .88rem; }

.methods { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0 22px; }
.method {
  cursor: pointer; background: var(--surface); border: 2px solid var(--border);
  border-radius: 10px; padding: 10px 16px; color: var(--text);
}
.method.selected { border-color: var(--primary); }

.btn {
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 11px 22px; cursor: pointer; font-size: .98rem; font-weight: 600;
}
.btn:hover { border-color: var(--primary); }
.btn.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); }
.btn.primary:disabled { opacity: .5; cursor: not-allowed; }

/* Profile */
.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .profile-grid { grid-template-columns: 1fr; } }
.profile-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.avatar { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }
.kv { list-style: none; }
.kv li { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--border); }
.field { display: block; margin-bottom: 14px; }
.field span { display: block; color: var(--muted); font-size: .85rem; margin-bottom: 5px; }
.field input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--surface-2); color: var(--text);
}
.checkbox { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.sub-status { display: flex; justify-content: space-between; padding-top: 6px; }
hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.mt-sm { margin-top: 10px; }

/* Profile identity block — breathing room between name / username / id */
.profile-id { display: flex; flex-direction: column; gap: 5px; }
.profile-id .strong { font-size: 1.1rem; }

/* Active-subscription banner on the Payments tab */
.sub-banner {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  background: color-mix(in srgb, var(--primary) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--primary) 40%, var(--border));
  color: var(--text); border-radius: var(--radius);
  padding: 12px 16px; margin-bottom: 18px; font-size: .95rem;
}
.sub-banner b { color: var(--primary); }

/* Invite / referral */
.invite-card { margin-top: 16px; }
.invite-card h3 { display: flex; align-items: center; gap: 8px; }
.invite-row { display: flex; gap: 8px; margin-top: 10px; }
.invite-row input {
  flex: 1; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--surface-2); color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85rem;
}
.invite-row .btn { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }

/* Referral code entry on the Payments tab */
.referral-box { margin: 6px 0 22px; }
.field-label { display: block; color: var(--muted); font-size: .85rem; margin-bottom: 6px; }
.referral-row { display: flex; gap: 8px; max-width: 420px; }
.referral-row input {
  flex: 1; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--surface-2); color: var(--text);
}
.referral-row input:disabled { opacity: .6; }
.referral-box.applied .referral-row { display: none; }

.json {
  background: var(--surface-2); border-radius: 10px; padding: 16px;
  overflow: auto; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85rem;
}

/* Login screen */
.signin-title { margin-bottom: 12px; }
.login-note {
  margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border);
  line-height: 1.5; text-align: left;
}
.login-card a { color: var(--primary); text-decoration: none; }
.login-card a:hover { text-decoration: underline; }

/* Referral stats in profile */
.invite-stats { display: flex; gap: 28px; margin-top: 16px; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 1.7rem; font-weight: 700; line-height: 1.1; color: var(--text); }
.stat-label { font-size: .82rem; color: var(--muted); margin-top: 2px; }
.discount-hint { color: var(--primary); }

/* Admin analytics */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 14px; margin-bottom: 18px; }
.kpis > *, .admin-grid > * { min-width: 0; } /* let grid items shrink, no overflow */
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.kpi-num { font-size: 1.9rem; font-weight: 700; color: var(--primary); }
.kpi-label { color: var(--muted); font-size: .85rem; margin-top: 2px; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .admin-grid { grid-template-columns: 1fr; } }
.admin-grid .kv li { align-items: center; }
.bar-row { display: flex; align-items: center; gap: 10px; padding: 4px 0; font-size: .85rem; }
.bar-day { width: 92px; color: var(--muted); font-variant-numeric: tabular-nums; }
.bar { flex: 1; height: 10px; background: var(--surface-2); border-radius: 6px; overflow: hidden; }
.bar-fill { display: block; height: 100%; background: var(--primary); border-radius: 6px; }
.bar-n { width: 28px; text-align: right; font-variant-numeric: tabular-nums; }

/* Admin: users table */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.data { width: 100%; border-collapse: collapse; font-size: .88rem; min-width: 560px; }
table.data th, table.data td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { color: var(--muted); font-weight: 600; background: var(--surface-2); position: sticky; top: 0; }
table.data tr:last-child td { border-bottom: none; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: .78rem; background: var(--surface-2); color: var(--muted); }
.badge.ok { background: color-mix(in srgb, var(--primary) 18%, var(--surface)); color: var(--primary); }
.badge.vip { background: color-mix(in srgb, #f5a623 22%, var(--surface)); color: #b9770a; }

/* Admin: settings form */
.settings-form { max-width: 520px; }
.settings-form .field { margin-bottom: 18px; }
.settings-form input[type="number"], .settings-form textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--surface-2); color: var(--text); font: inherit;
}
.settings-form textarea { min-height: 70px; resize: vertical; font-family: ui-monospace, Menlo, monospace; font-size: .85rem; }

/* Toggle switch */
.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch .track {
  width: 46px; height: 26px; border-radius: 20px; background: var(--surface-2);
  border: 1px solid var(--border); position: relative; transition: background .15s;
}
.switch .track::after {
  content: ''; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px;
  border-radius: 50%; background: var(--muted); transition: transform .15s, background .15s;
}
.switch input:checked + .track { background: color-mix(in srgb, var(--primary) 30%, var(--surface)); border-color: var(--primary); }
.switch input:checked + .track::after { transform: translateX(20px); background: var(--primary); }
.switch-labels { display: flex; gap: 8px; font-size: .9rem; }
.save-row { display: flex; align-items: center; gap: 12px; margin-top: 8px; }

[hidden] { display: none !important; }