:root {
  --bg-base: #070b13;
  --bg-grad-1: #14223f;
  --bg-grad-2: #31183a;
  --bg-grad-3: #0f2f31;
  --surface: rgba(255, 255, 255, 0.1);
  --surface-strong: rgba(255, 255, 255, 0.14);
  --surface-soft: rgba(255, 255, 255, 0.07);
  --text: #eaf2ff;
  --muted: #a6b8d3;
  --line: rgba(255, 255, 255, 0.2);
  --brand: #5fd9d1;
  --brand-strong: #8cefe8;
  --warn: #ffc670;
  --danger: #ff8a9f;
  --radius: 24px;
  --glass-blur: blur(22px) saturate(150%);
  --shadow: 0 28px 70px rgba(6, 12, 24, 0.4);
  color-scheme: dark;
  font-family: "SF Pro Display", "Avenir Next", "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  --bg-base: #edf4ff;
  --bg-grad-1: #dce6ff;
  --bg-grad-2: #f4dfff;
  --bg-grad-3: #dff6f0;
  --surface: rgba(255, 255, 255, 0.68);
  --surface-strong: rgba(255, 255, 255, 0.82);
  --surface-soft: rgba(255, 255, 255, 0.52);
  --text: #16223c;
  --muted: #5f7094;
  --line: rgba(22, 34, 60, 0.14);
  --brand: #147e77;
  --brand-strong: #0e635d;
  --warn: #b06d1a;
  --danger: #ab2d49;
  --shadow: 0 22px 56px rgba(47, 76, 128, 0.18);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100%; background:
  radial-gradient(130% 80% at 8% -10%, var(--bg-grad-1), transparent 50%),
  radial-gradient(120% 100% at 96% -15%, var(--bg-grad-2), transparent 48%),
  radial-gradient(90% 70% at 52% 112%, var(--bg-grad-3), transparent 58%),
  linear-gradient(180deg, var(--bg-base) 0%, #090e19 100%);
  color: var(--text);
}
body { padding: 18px 14px 100px; }
.app-shell { max-width: 900px; margin: 0 auto; }
.hero {
  padding: 20px 18px 12px;
}
.hero__topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.hero__eyebrow {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--brand-strong);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
}
.theme-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  backdrop-filter: var(--glass-blur);
}
.hero__title {
  margin: 12px 0 8px;
  font-size: clamp(32px, 8vw, 52px);
  line-height: 0.95;
}
.hero__subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 540px;
  font-size: 15px;
  line-height: 1.5;
}
.content {
  display: grid;
  gap: 14px;
}
.screen {
  display: grid;
  gap: 14px;
}
.panel, .stat-card {
  background: var(--surface);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel {
  padding: 18px;
}
.panel__title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 14px;
}
.panel__meta {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.45;
}
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(95, 217, 209, 0.18);
  color: var(--brand-strong);
  font-weight: 600;
  border: 1px solid var(--line);
}
.status-badge[data-tone="warn"] {
  background: color-mix(in srgb, var(--warn) 24%, transparent);
  color: var(--warn);
}
.status-badge[data-tone="error"] {
  background: color-mix(in srgb, var(--danger) 24%, transparent);
  color: var(--danger);
}
.viewer-card {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.viewer-card__name { font-size: 24px; font-weight: 700; }
.viewer-card__handle { color: var(--muted); margin-top: 4px; }
.viewer-card__role {
  padding: 8px 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--line);
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.stat-card {
  padding: 16px;
}
.stat-card__label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.stat-card__value {
  margin-top: 8px;
  font-size: clamp(24px, 6vw, 36px);
  font-weight: 700;
}
.subscription-list {
  display: grid;
  gap: 12px;
}
.subscription-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-strong);
  backdrop-filter: var(--glass-blur);
}
.subscription-card__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}
.subscription-card__name {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
}
.subscription-card__badge {
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 18%, transparent);
  color: var(--brand-strong);
  font-size: 12px;
  white-space: nowrap;
}
.subscription-card__meta {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.config-card {
  margin-top: 14px;
  padding: 14px;
  border-radius: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  backdrop-filter: var(--glass-blur);
}
.network-toolbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}
.network-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
.network-select {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  padding: 10px;
  font: inherit;
  color: var(--text);
}
.network-apply {
  border: 1px solid color-mix(in srgb, var(--brand) 50%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--brand) 25%, transparent);
  color: var(--brand-strong);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  padding: 10px 12px;
  align-self: end;
}
.config-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.config-protocols,
.config-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.config-chip,
.config-action {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
}
.config-chip.is-active {
  background: color-mix(in srgb, var(--brand) 25%, transparent);
  color: var(--brand-strong);
}
.config-action {
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}
.config-feedback {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.45;
}
.config-feedback[data-tone="ok"] {
  color: var(--brand-strong);
}
.config-feedback[data-tone="error"] {
  color: var(--danger);
}
.config-qr-wrap {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  padding: 12px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.config-qr {
  width: min(100%, 320px);
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 12px;
  background: #ffffff;
}
.config-preview {
  margin: 12px 0 0;
  padding: 14px;
  overflow: auto;
  border-radius: 16px;
  background: rgba(4, 10, 18, 0.75);
  color: #d6e8ff;
  border: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}
.meta-item {
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}
.meta-item__label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.meta-item__value {
  margin-top: 6px;
  font-weight: 600;
  line-height: 1.35;
}
.notes-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}
.profile-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.settings-footer {
  margin-top: 14px;
}
.settings-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
  backdrop-filter: var(--glass-blur);
  padding: 14px;
}
.settings-card__title {
  font-size: 16px;
  font-weight: 700;
}
.settings-card__text {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.55;
}
.settings-card__action {
  margin-top: 12px;
  border: 1px solid color-mix(in srgb, var(--brand) 40%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--brand) 18%, transparent);
  color: var(--brand-strong);
  padding: 10px 14px;
  font: inherit;
  font-weight: 700;
}
.submenu {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.submenu__btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  padding: 8px 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
}
.submenu__btn.is-active {
  background: color-mix(in srgb, var(--brand) 22%, transparent);
  color: var(--brand-strong);
}
.submenu-content__card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
  backdrop-filter: var(--glass-blur);
  padding: 14px;
}
.submenu-content__title {
  font-size: 16px;
  font-weight: 700;
}
.submenu-content__text {
  margin-top: 8px;
  color: var(--text);
  line-height: 1.55;
}
.submenu-content__note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}
.tabbar {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: min(920px, calc(100vw - 20px));
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow);
  z-index: 30;
}
.tabbar__btn {
  border: 1px solid transparent;
  border-radius: 14px;
  background: transparent;
  color: var(--muted);
  padding: 8px 6px;
  display: grid;
  justify-items: center;
  gap: 4px;
  font: inherit;
  font-size: 11px;
  font-weight: 600;
}
.tabbar__btn.is-active {
  background: color-mix(in srgb, var(--brand) 20%, transparent);
  color: var(--brand-strong);
  border-color: color-mix(in srgb, var(--brand) 36%, transparent);
}
.tabbar__icon {
  font-size: 14px;
  line-height: 1;
}
.empty-state {
  color: var(--muted);
  line-height: 1.5;
}
@media (max-width: 640px) {
  .stats { grid-template-columns: 1fr; }
  .subscription-card__meta { grid-template-columns: 1fr; }
  .viewer-card { flex-direction: column; }
  .config-toolbar { flex-direction: column; align-items: stretch; }
  .network-toolbar { grid-template-columns: 1fr; }
  .hero__topbar { align-items: flex-start; }
  .profile-grid { grid-template-columns: 1fr; }
  .tabbar { gap: 4px; padding: 6px; }
}