* {
  box-sizing: border-box;
}

:root {
  --bg: #0d0f16;
  --surface: #151824;
  --surface-2: #1b1f2e;
  --line: rgba(255, 255, 255, 0.07);
  --text: #e8eaf0;
  --muted: #8b90a5;
  --accent: #c8ff00;
  --accent-dim: rgba(200, 255, 0, 0.14);
  --danger: #ff5470;
  --ok: #3ddc84;
  --radius: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'SN Pro', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
}

button {
  font-family: inherit;
}

/* ===== Каркас ===== */
.app {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
}

/* ===== Сайдбар ===== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem 1rem;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0 0.5rem;
}

.brand__logo {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--accent-dim);
  color: var(--accent);
}

.brand__name {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand__accent {
  color: var(--accent);
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.nav__item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.85rem;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, color 0.15s;
}

.nav__item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.nav__item--active {
  background: var(--accent-dim);
  color: var(--accent);
}

/* ===== План ===== */
.plan-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1rem;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--line);
}

.plan-card__row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.plan-card__name {
  color: var(--muted);
}

.plan-card__value {
  font-weight: 700;
  color: var(--accent);
}

.plan-card__bar {
  height: 6px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.plan-card__bar span {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: var(--accent);
}

.plan-card__hint {
  font-size: 0.78rem;
  color: var(--muted);
}

/* ===== Кнопки ===== */
.btn {
  padding: 0.6rem 1rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: filter 0.15s, background 0.15s;
}

.btn--accent {
  background: var(--accent);
  color: #10120a;
}

.btn--accent:hover {
  filter: brightness(1.08);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--muted);
}

.btn--ghost:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.btn--block {
  width: 100%;
}

/* ===== Main ===== */
.main {
  padding: 1.6rem 2rem 2.5rem;
  overflow: hidden;
}

.view {
  display: none;
  animation: fade 0.25s ease;
}

.view--active {
  display: block;
}

@keyframes fade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.topbar__title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.85rem;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--surface-2);
  border: 1px solid var(--line);
}

.chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.chip--danger {
  color: var(--danger);
  background: rgba(255, 84, 112, 0.1);
  border-color: rgba(255, 84, 112, 0.25);
}

.chip--ok {
  color: var(--ok);
  background: rgba(61, 220, 132, 0.1);
  border-color: rgba(61, 220, 132, 0.25);
}

.chip--ok .chip__dot {
  animation: pulse 1.6s infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(61, 220, 132, 0.5);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(61, 220, 132, 0);
  }
}

/* ===== Подключение ===== */
.connect {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
}

.power-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 0 0.5rem;
}

.power-ring {
  position: relative;
  width: 240px;
  height: 240px;
}

.power-ring__svg {
  position: absolute;
  inset: 0;
  transform: rotate(-90deg);
}

.power-ring__track,
.power-ring__prog {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
}

.power-ring__track {
  stroke: rgba(255, 255, 255, 0.07);
}

.power-ring__prog {
  stroke: var(--accent);
  stroke-dasharray: 679;
  stroke-dashoffset: 679;
  transition: stroke-dashoffset 0.6s ease;
}

.power-ring.is-on .power-ring__prog {
  stroke-dashoffset: 0;
}

.power-ring.is-loading .power-ring__prog {
  stroke-dashoffset: 200;
  animation: ring 1.2s ease-in-out infinite alternate;
}

@keyframes ring {
  from {
    stroke-dashoffset: 679;
  }
  to {
    stroke-dashoffset: 120;
  }
}

.power {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 168px;
  height: 168px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color 0.25s, background 0.25s, box-shadow 0.25s;
}

.power:hover {
  color: var(--text);
}

.power-ring.is-on .power {
  color: #10120a;
  background: var(--accent);
  box-shadow: 0 0 60px rgba(200, 255, 0, 0.25);
}

.power-state {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ===== Карточки ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.server-peek {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: min(560px, 100%);
  padding: 1rem 1.2rem;
}

.server-peek__flag {
  font-size: 2rem;
  line-height: 1;
}

.server-peek__info {
  flex: 1;
}

.server-peek__name {
  font-weight: 700;
}

.server-peek__meta {
  font-size: 0.83rem;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  width: min(760px, 100%);
}

.stat {
  padding: 1rem 1.1rem;
}

.stat__label {
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat__value {
  margin-top: 0.4rem;
  font-size: 1.25rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.stat__value small {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
}

.stat__value--mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05rem;
}

/* ===== Серверы ===== */
.search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
}

.search input {
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.9rem;
  width: 200px;
  font-family: inherit;
}

.servers__heading {
  margin: 0 0 0.9rem;
  font-size: 0.95rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.server-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.8rem;
}

.server {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 1.1rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
  text-align: left;
  color: inherit;
  width: 100%;
}

.server:hover {
  border-color: rgba(200, 255, 0, 0.4);
  transform: translateY(-2px);
}

.server--active {
  border-color: var(--accent);
  background: linear-gradient(0deg, rgba(200, 255, 0, 0.06), rgba(200, 255, 0, 0.06)), var(--surface);
}

.server__flag {
  font-size: 1.7rem;
}

.server__info {
  flex: 1;
  min-width: 0;
}

.server__name {
  font-weight: 700;
  font-size: 0.95rem;
}

.server__sub {
  font-size: 0.8rem;
  color: var(--muted);
}

.server__ping {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--muted);
}

.server__ping--good {
  color: var(--ok);
}

.server__ping--mid {
  color: #ffc857;
}

.server__ping--bad {
  color: var(--danger);
}

.server__load {
  width: 46px;
  text-align: right;
  font-size: 0.78rem;
  color: var(--muted);
}

.empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 1.6rem;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

/* ===== Статистика ===== */
.stats-page {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.chart-card {
  padding: 1.2rem 1.3rem;
}

.chart-card__head {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.8rem;
}

.chart-card__legend {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-left: 0.7rem;
}

.dot--down {
  background: var(--accent);
}

.dot--up {
  background: #7c9cff;
}

#trafficChart {
  width: 100%;
  height: auto;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.kv {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.1rem 1.2rem;
}

.kv__k {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kv__v {
  font-size: 1.4rem;
  font-weight: 800;
}

/* ===== Настройки ===== */
.settings {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  max-width: 640px;
}

.setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1.05rem 1.2rem;
}

.setting__name {
  font-weight: 700;
}

.setting__desc {
  font-size: 0.83rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.switch {
  position: relative;
  flex-shrink: 0;
}

.switch input {
  position: absolute;
  opacity: 0;
}

.switch span {
  display: block;
  width: 46px;
  height: 26px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: background 0.2s;
}

.switch span::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s;
}

.switch input:checked + span {
  background: var(--accent);
}

.switch input:checked + span::after {
  transform: translateX(20px);
}

.settings__group {
  margin-top: 1.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.setting--hidden {
  display: none;
}

.select,
.input {
  padding: 0.6rem 0.8rem;
  min-width: 200px;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
}

.select:hover,
.select:focus,
.input:hover,
.input:focus {
  border-color: rgba(200, 255, 0, 0.5);
}

.input {
  cursor: text;
  font-weight: 600;
}

.input--mono {
  font-family: 'JetBrains Mono', monospace;
}

.input--error {
  border-color: var(--danger);
}

.range {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.range input[type='range'] {
  width: 150px;
  accent-color: var(--accent);
  cursor: pointer;
}

.range__val {
  min-width: 62px;
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--accent);
}

.seg {
  display: flex;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 3px;
  gap: 2px;
}

.seg__btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.45rem 0.85rem;
  border-radius: 9px;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.seg__btn--active {
  background: var(--accent);
  color: #10120a;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translate(-50%, 80px);
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 0.75rem 1.2rem;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 50;
}

.toast--show {
  transform: translate(-50%, 0);
  opacity: 1;
}

/* ===== Адаптив ===== */
@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.6rem;
    padding: 0.8rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .nav {
    flex-direction: row;
    flex: 1;
  }

  .nav__item {
    font-size: 0;
    gap: 0;
    padding: 0.6rem;
  }

  .nav__item svg {
    width: 20px;
    height: 20px;
  }

  .sidebar__footer {
    display: none;
  }

  .main {
    padding: 1.2rem 1rem 2rem;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .search input {
    width: 130px;
  }
}