:root {
  --bg: #02040c;
  --panel: #0d1020;
  --panel-soft: #151a31;
  --line: rgba(116, 128, 191, 0.22);
  --line-strong: rgba(121, 94, 255, 0.32);
  --text: #f3f6ff;
  --muted: #8c92b2;
  --green: #00d0b0;
  --red: #ff6d73;
  --blue: #6cabff;
  --gold: #ffd36e;
  --purple: #8b6dff;
  --shadow: 0 20px 48px rgba(0, 0, 0, 0.42);
  --radius-lg: 28px;
  --radius-md: 22px;
  --radius-sm: 18px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Fira Sans", "PingFang SC", sans-serif;
  background:
    radial-gradient(circle at top center, rgba(60, 63, 150, 0.22), transparent 34%),
    linear-gradient(180deg, #02040c 0%, #040717 100%);
  color: var(--text);
}

body.modal-open {
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 20, 44, 0.16), transparent 22%);
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.app-shell {
  width: min(100%, 460px);
  margin: 0 auto;
  padding: 18px 16px 28px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.topbar__title h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.topbar__title p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.connection-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(8, 12, 24, 0.92);
  border: 1px solid rgba(0, 208, 176, 0.18);
  color: #eafffb;
  font-weight: 600;
}

.connection-pill.is-offline {
  border-color: rgba(255, 109, 115, 0.2);
  color: #ffe7e8;
}

.connection-pill__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(0, 208, 176, 0.7);
}

.connection-pill.is-offline .connection-pill__dot {
  background: var(--red);
  box-shadow: 0 0 12px rgba(255, 109, 115, 0.65);
}

.dashboard {
  display: grid;
  gap: 16px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.summary-tile,
.instance-card,
.system-tile {
  background: linear-gradient(180deg, rgba(18, 22, 43, 0.98), rgba(12, 16, 32, 0.95));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.summary-tile {
  min-height: 122px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  gap: 8px;
  padding: 18px 12px;
  text-align: center;
}

.summary-tile__value {
  font-size: 46px;
  line-height: 1;
  letter-spacing: -0.06em;
}

.summary-tile__label {
  color: var(--muted);
  font-size: 17px;
}

.summary-tile--green .summary-tile__value {
  color: var(--green);
}

.summary-tile--red .summary-tile__value {
  color: var(--red);
}

.summary-tile--blue .summary-tile__value {
  color: var(--blue);
}

.summary-tile--gold .summary-tile__value {
  color: var(--gold);
}

.tab-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(111, 118, 169, 0.28);
}

.tab-button {
  min-height: 46px;
  border: 0;
  background: transparent;
  color: #737aa0;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  position: relative;
}

.tab-button.is-active {
  color: #9b8cff;
}

.tab-button.is-active::after {
  content: "";
  position: absolute;
  left: 18%;
  right: 18%;
  bottom: -5px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, #6f53ff, #a996ff);
}

.tab-button:focus-visible,
.rename-button:focus-visible,
.copy-button:focus-visible,
.modal-button:focus-visible,
.modal-close:focus-visible,
.modal-input:focus-visible,
.enter-button:focus-visible {
  outline: 2px solid rgba(139, 109, 255, 0.92);
  outline-offset: 2px;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.instance-list,
.system-grid {
  display: grid;
  gap: 16px;
}

.instance-card {
  border-radius: var(--radius-lg);
  padding: 18px;
  position: relative;
  overflow: hidden;
}

.instance-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, #6178ff, #8cd2ff);
}

.instance-card--success::before {
  background: linear-gradient(90deg, var(--green), #5ab7ff);
}

.instance-card--warning::before {
  background: linear-gradient(90deg, var(--gold), #ffb14a);
}

.instance-card--danger::before {
  background: linear-gradient(90deg, var(--red), #ff9a63);
}

.instance-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.instance-card__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.instance-card__title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.instance-card__title {
  margin: 0;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.05em;
}

.instance-card__port {
  margin: 8px 0 0;
  color: rgba(188, 191, 215, 0.54);
  font-size: 18px;
  font-family: "Fira Code", monospace;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
}

.status-chip--success {
  color: #00d8b7;
  background: rgba(0, 208, 176, 0.14);
}

.status-chip--warning {
  color: #f4c15f;
  background: rgba(255, 211, 110, 0.14);
}

.status-chip--danger {
  color: #ff8b90;
  background: rgba(255, 109, 115, 0.14);
}

.copy-button {
  min-width: 62px;
  min-height: 42px;
  border: 1px solid rgba(124, 132, 184, 0.25);
  border-radius: 14px;
  background: rgba(19, 23, 46, 0.95);
  color: #c9d1f5;
  cursor: pointer;
}

.rename-button {
  min-width: 62px;
  min-height: 42px;
  border: 1px solid rgba(0, 208, 176, 0.22);
  border-radius: 14px;
  background: rgba(7, 34, 39, 0.92);
  color: #8ff6e5;
  cursor: pointer;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric-box {
  min-height: 128px;
  border-radius: 18px;
  background: rgba(27, 31, 60, 0.84);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 14px 10px;
}

.metric-box strong {
  font-family: "Fira Code", monospace;
  font-size: clamp(28px, 8vw, 38px);
  line-height: 1.05;
  color: var(--green);
}

.metric-box:first-child strong {
  color: var(--blue);
}

.metric-box span {
  margin-top: 6px;
  font-size: 15px;
  color: var(--muted);
}

.enter-button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  margin-top: 16px;
  border-radius: 18px;
  background: linear-gradient(90deg, #6f53ff, #8d79ff);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
}

.system-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.system-tile {
  min-height: 138px;
  border-radius: var(--radius-sm);
  padding: 16px;
  display: grid;
  align-content: start;
  gap: 10px;
}

.system-tile__label {
  color: #a2a8c6;
  font-size: 14px;
}

.system-tile__value {
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.system-tile__hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.empty-state {
  margin: 0;
  padding: 22px 18px;
  border-radius: var(--radius-sm);
  background: rgba(25, 18, 29, 0.92);
  border: 1px solid rgba(255, 109, 115, 0.16);
  color: #ffd5d7;
}

.modal-shell[hidden] {
  display: none;
}

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 60;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 4, 12, 0.78);
  backdrop-filter: blur(14px);
}

.modal-card {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 18px;
  padding: 18px;
  border-radius: 24px;
  border: 1px solid rgba(116, 128, 191, 0.22);
  background: linear-gradient(180deg, rgba(18, 22, 43, 0.99), rgba(10, 13, 28, 0.98));
  box-shadow: var(--shadow);
}

.modal-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.modal-card__head h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.1;
}

.modal-card__head p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.modal-close {
  min-width: 58px;
  min-height: 42px;
  border: 1px solid rgba(124, 132, 184, 0.25);
  border-radius: 14px;
  background: rgba(19, 23, 46, 0.95);
  color: #c9d1f5;
  cursor: pointer;
}

.modal-field {
  display: block;
  margin-bottom: 8px;
  color: #d8defa;
  font-size: 15px;
  font-weight: 600;
}

.modal-input {
  width: 100%;
  min-height: 52px;
  padding: 0 14px;
  border-radius: 16px;
  border: 1px solid rgba(124, 132, 184, 0.3);
  background: rgba(11, 14, 29, 0.92);
  color: var(--text);
  font: inherit;
}

.modal-input::placeholder {
  color: rgba(169, 176, 214, 0.52);
}

.modal-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.modal-button {
  min-height: 48px;
  border: 0;
  border-radius: 16px;
  font-weight: 700;
  cursor: pointer;
}

.modal-button--ghost {
  background: rgba(19, 23, 46, 0.95);
  color: #d7ddfb;
  border: 1px solid rgba(124, 132, 184, 0.25);
}

.modal-button--primary {
  background: linear-gradient(90deg, #00cfae, #6cabff);
  color: #04131a;
}

.modal-button:disabled {
  opacity: 0.65;
  cursor: wait;
}

@media (min-width: 720px) {
  .app-shell {
    width: min(100%, 820px);
    padding-top: 24px;
  }

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

  .instance-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}