:root {
  --bg: #070d18;
  --bg-deep: #040814;
  --sidebar: #111928;
  --topbar: #202b3c;
  --panel: #151f30;
  --panel-2: #202b3d;
  --line: rgba(172, 188, 211, 0.18);
  --line-strong: rgba(172, 188, 211, 0.32);
  --text: #f7fafc;
  --muted: #95a2b6;
  --teal: #58c7b8;
  --green: #68d28c;
  --violet: #a98bff;
  --gold: #f4bf54;
  --rose: #e26b89;
  --blue: #6fa8ff;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg-deep);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
}

button,
input,
select {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; }

code { color: #8ee2d5; }

.app-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--sidebar);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 78px;
  padding: 0 20px;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, #53c5b8, #82a7ff);
  color: #06101d;
  font-weight: 900;
}

.brand strong {
  display: block;
  font-size: 1.45rem;
  letter-spacing: 0;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
}

.side-nav {
  display: grid;
  gap: 8px;
  padding: 20px 10px;
}

.side-nav button,
.sidebar-footer button {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #cbd4e2;
  font-weight: 800;
  text-align: left;
}

.side-nav button span {
  display: grid;
  place-items: center;
  width: 24px;
  color: currentColor;
  font-weight: 900;
}

.side-nav button.active,
.side-nav button:hover {
  background: rgba(88, 199, 184, 0.12);
  color: var(--teal);
}

.sidebar-footer {
  margin-top: auto;
  padding: 18px 10px;
  border-top: 1px solid var(--line);
}

.sidebar-footer span {
  display: block;
  padding: 8px 18px 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.main {
  min-width: 0;
  background:
    radial-gradient(circle at 30% -10%, rgba(88, 199, 184, 0.16), transparent 34rem),
    linear-gradient(180deg, #09111e, #050817 54%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 78px;
  padding: 0 34px;
  border-bottom: 1px solid var(--line);
  background: rgba(32, 43, 60, 0.94);
  backdrop-filter: blur(14px);
}

.topbar h1 {
  margin: 0;
  font-size: 1.6rem;
  line-height: 1.1;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--muted);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.balance-pill,
.avatar {
  display: inline-grid;
  place-items: center;
  min-height: 42px;
  border-radius: 8px;
  background: rgba(88, 199, 184, 0.12);
  color: #84eadc;
}

.balance-pill { padding: 0 18px; font-weight: 900; }

.avatar {
  width: 44px;
  font-weight: 900;
  background: var(--teal);
  color: #072018;
}

.user-name { font-weight: 800; }

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.content {
  width: min(100%, 1500px);
  margin: 0 auto;
  padding: 36px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.metric-grid.compact { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.metric-card,
.panel,
.profile-hero,
.redeem-card,
.plan-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(27, 38, 56, 0.96), rgba(18, 27, 43, 0.96));
  box-shadow: var(--shadow);
}

.metric-card {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 116px;
  padding: 22px;
}

.metric-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: rgba(88, 199, 184, 0.14);
  color: var(--teal);
  font-weight: 900;
}

.metric-card p,
.metric-card small {
  margin: 0;
  color: var(--muted);
}

.metric-card strong {
  display: block;
  margin: 2px 0;
  font-size: 1.85rem;
  line-height: 1.1;
}

.metric-card.green .metric-icon { color: var(--green); background: rgba(104, 210, 140, 0.14); }
.metric-card.gold .metric-icon { color: var(--gold); background: rgba(244, 191, 84, 0.14); }
.metric-card.rose .metric-icon { color: var(--rose); background: rgba(226, 107, 137, 0.14); }
.metric-card.violet .metric-icon { color: var(--violet); background: rgba(169, 139, 255, 0.14); }
.metric-card.blue .metric-icon { color: var(--blue); background: rgba(111, 168, 255, 0.14); }

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.7fr);
  gap: 24px;
  margin-bottom: 24px;
}

.panel {
  padding: 24px;
  overflow: hidden;
}

.panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.panel h2,
.plan-columns h2,
.profile-hero h2 {
  margin: 0;
  font-size: 1.35rem;
}

.panel header span,
.panel p,
.plan-card p,
.subscription-card small {
  color: var(--muted);
}

.quick-list {
  display: grid;
  gap: 14px;
}

.quick-list button {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 4px 14px;
  align-items: center;
  min-height: 86px;
  padding: 16px;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  text-align: left;
}

.quick-list span {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 8px;
  background: rgba(88, 199, 184, 0.13);
  color: var(--teal);
}

.quick-list small { color: var(--muted); }

.model-bars {
  display: grid;
  gap: 18px;
  padding: 36px 0;
}

.model-bar {
  display: grid;
  grid-template-columns: 80px 1fr 90px;
  gap: 14px;
  align-items: center;
}

.model-bar i {
  display: block;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--teal), var(--violet));
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-weight: 900;
  font-size: 0.78rem;
}

.tag.green { color: var(--green); background: rgba(104, 210, 140, 0.13); }
.tag.violet { color: var(--violet); background: rgba(169, 139, 255, 0.13); }
.tag.rose { color: var(--rose); background: rgba(226, 107, 137, 0.13); }

.empty-state {
  display: grid;
  place-items: center;
  min-height: 240px;
  color: var(--muted);
  text-align: center;
}

.empty-state span {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin-bottom: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 2rem;
}

.empty-state strong {
  color: var(--text);
  font-size: 1.25rem;
}

.empty-state p { margin: 6px 0 0; }

.center-actions {
  display: flex;
  justify-content: center;
  margin-top: 18px;
}

.field-row,
.billing-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  color: #d9e2ef;
  font-weight: 800;
}

input,
select {
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(88, 199, 184, 0.16);
}

.primary-action,
.subscribe-button,
.ghost-action {
  min-height: 48px;
  padding: 0 22px;
  border: 0;
  border-radius: 8px;
  background: var(--teal);
  color: #051c19;
  font-weight: 900;
}

.ghost-action {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--rose);
}

.endpoint-line {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 18px 0 0;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.endpoint-line b {
  color: var(--teal);
  font-size: 0.8rem;
}

.plan-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.plan-columns h2 {
  margin: 0 0 16px;
}

.plan-list {
  display: grid;
  gap: 18px;
}

.plan-card {
  position: relative;
  padding: 24px;
  overflow: hidden;
}

.plan-topline {
  position: absolute;
  inset: 0 0 auto;
  height: 8px;
  background: var(--green);
}

.plan-card.claude .plan-topline { background: var(--violet); }

.plan-card header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
}

.plan-card h3 {
  margin: 0;
  font-size: 1.25rem;
}

.plan-card p { margin: 4px 0 0; }

.price {
  margin: 20px 0;
  color: var(--green);
  font-size: 2.2rem;
  font-weight: 900;
}

.plan-card.claude .price { color: var(--violet); }

.price small,
.price span {
  color: var(--muted);
  font-size: 0.9rem;
}

.plan-card dl,
.quota-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.plan-card dl {
  margin: 0 0 20px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.plan-card dl div,
.quota-grid div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

dt,
.quota-grid small {
  color: var(--muted);
}

dd {
  margin: 0;
  font-weight: 800;
}

.subscribe-button {
  width: 100%;
  background: #429555;
  color: #fff;
}

.subscription-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.subscription-card + .subscription-card { margin-top: 14px; }

.subscription-card header {
  justify-content: flex-start;
  margin-bottom: 16px;
}

.redeem-card {
  display: grid;
  place-items: center;
  min-height: 260px;
  margin: 0 auto 24px;
  max-width: 760px;
  background: linear-gradient(135deg, #58c7b8, #4fa093);
  color: #fff;
  text-align: center;
}

.redeem-card span {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 2rem;
}

.redeem-card p { margin: 10px 0 0; }
.redeem-card strong { font-size: 3rem; }

.redeem-form,
.info-panel {
  max-width: 760px;
  margin: 0 auto 24px;
}

.profile-hero {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 28px;
  align-items: center;
  padding: 34px;
  margin-bottom: 24px;
}

.profile-hero > span {
  display: grid;
  place-items: center;
  width: 100px;
  height: 100px;
  border-radius: 8px;
  background: var(--teal);
  color: #06201d;
  font-size: 2.4rem;
  font-weight: 900;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.upstream-intro {
  margin-bottom: 24px;
}

.add-channel {
  display: grid;
  grid-template-columns: 150px minmax(220px, 1fr) 120px auto;
  gap: 12px;
  margin-top: 18px;
}

.upstream-stack {
  display: grid;
  gap: 18px;
}

.upstream-form {
  display: grid;
  gap: 18px;
}

.channel-stats,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.channel-stats span {
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.form-actions {
  justify-content: flex-end;
}

.form-actions .switch {
  margin-right: auto;
}

.switch {
  display: flex;
  align-items: center;
  gap: 10px;
}

.switch input {
  width: 18px;
  min-height: 18px;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 20;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: 160ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    z-index: 10;
    width: 280px;
    transform: translateX(-100%);
    transition: transform 180ms ease;
  }
  .sidebar.is-open { transform: translateX(0); }
  .menu-toggle { display: inline-grid; place-items: center; }
  .metric-grid,
  .metric-grid.compact,
  .panel-grid,
  .plan-columns,
  .settings-grid,
  .add-channel,
  .settings-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .content { padding: 20px; }
  .topbar { padding: 0 18px; }
  .topbar p,
  .user-name { display: none; }
  .field-row,
  .billing-head {
    display: grid;
    align-items: stretch;
  }
  .profile-hero {
    grid-template-columns: 1fr;
  }
  .plan-card dl,
  .quota-grid {
    grid-template-columns: 1fr;
  }
}