:root {
  color-scheme: dark;
  --bg: #101114;
  --panel: #191b20;
  --panel-2: #20242b;
  --text: #f7f7f2;
  --muted: #a4adba;
  --line: #303640;
  --cyan: #22d3ee;
  --green: #a3e635;
  --yellow: #facc15;
  --red: #fb7185;
  --vk: #4c8bf5;
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

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

button {
  min-height: 42px;
  border: 0;
  border-radius: var(--radius);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}

button.primary {
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: #101114;
  font-weight: 800;
}

button.warn {
  background: var(--yellow);
  color: #111217;
  font-weight: 800;
}

button.danger {
  background: var(--red);
  color: #111217;
  font-weight: 800;
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

input,
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #121419;
  color: var(--text);
  padding: 10px 12px;
}

textarea {
  min-height: 86px;
  resize: vertical;
}

.app-shell {
  width: min(100%, 520px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px 14px 96px;
}

.topbar,
.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  line-height: 1.05;
}

.brand span,
.muted {
  color: var(--muted);
  font-size: 13px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

.stack {
  display: grid;
  gap: 12px;
}

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

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

.metric {
  min-height: 78px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.metric strong {
  display: block;
  font-size: 25px;
}

.tabs,
.bottom-nav {
  display: flex;
  gap: 8px;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 12px;
  width: min(calc(100% - 24px), 500px);
  transform: translateX(-50%);
  padding: 8px;
  background: rgba(25, 27, 32, 0.96);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
}

.tabs button,
.bottom-nav button {
  flex: 1;
  min-width: 0;
  min-height: 38px;
  font-size: 13px;
  padding: 8px;
}

.tabs button.active,
.bottom-nav button.active {
  background: var(--cyan);
  color: #101114;
  font-weight: 800;
}

.task,
.history-row,
.submission,
.user-row,
.prize-row,
.log-row {
  display: grid;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.task h3,
.panel h2,
.panel h3 {
  margin: 0;
  font-size: 16px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #28313a;
  color: var(--text);
  font-size: 12px;
}

.badge.good {
  background: rgba(163, 230, 53, 0.16);
  color: var(--green);
}

.badge.wait {
  background: rgba(250, 204, 21, 0.16);
  color: var(--yellow);
}

.badge.bad {
  background: rgba(251, 113, 133, 0.16);
  color: var(--red);
}

.network-choice button {
  min-height: 112px;
  text-align: left;
  padding: 14px;
}

.network-choice strong {
  display: block;
  font-size: 20px;
  margin-bottom: 6px;
}

.notice {
  border-left: 4px solid var(--yellow);
}

.admin-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 18px 0 40px;
}

.admin-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 16px;
}

.admin-nav {
  display: grid;
  align-content: start;
  gap: 8px;
}

.admin-nav button {
  text-align: left;
  padding: 10px 12px;
}

.admin-nav button.active {
  background: var(--green);
  color: #101114;
  font-weight: 800;
}

.table-list {
  display: grid;
  gap: 10px;
}

.admin-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.admin-form .full {
  grid-column: 1 / -1;
}

.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #0d0f12;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px;
  color: var(--muted);
}

@media (max-width: 760px) {
  .admin-layout,
  .admin-form {
    grid-template-columns: 1fr;
  }

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

  .metric-grid {
    grid-template-columns: 1fr;
  }
}