:root {
  color-scheme: light;
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.08);
  --panel2: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --danger: #ff6b6b;
  --ok: #2dd4bf;
  --success: #22c55e;
  --btn: #60a5fa;
  --btn2: #a78bfa;
  --border: rgba(255, 255, 255, 0.16);
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --topbar-h: 64px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, sans-serif;
  background: radial-gradient(900px 500px at 20% 10%, rgba(96, 165, 250, 0.25), transparent 50%),
              radial-gradient(900px 500px at 80% 10%, rgba(167, 139, 250, 0.22), transparent 50%),
              var(--bg);
  color: var(--text);
}

a { color: inherit; }

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 18px 14px 40px;
}

.app-main {
  padding-top: calc(var(--topbar-h) + 14px);
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(11, 18, 32, 0.72);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.topbar-inner {
  max-width: 640px;
  margin: 0 auto;
  height: var(--topbar-h);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.brand {
  display: grid;
  gap: 2px;
  min-width: 140px;
}

.brand-title {
  font-weight: 650;
  letter-spacing: 0.2px;
  font-size: 13px;
}

.brand-sub {
  color: var(--muted);
  font-size: 12px;
}

.tabs {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  gap: 4px;
}

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  min-width: 84px;
}

.tab.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.10);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 900px) {
  .grid { grid-template-columns: 1.2fr 0.8fr; }
}

.card {
  background: linear-gradient(180deg, var(--panel), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

.page-title {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.2px;
}

.page-subtitle {
  margin: 6px 0 0;
  color: var(--muted);
}

.big-title {
  margin: 0;
  font-size: 18px;
}

.placeholder {
  margin-top: 10px;
  padding: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.14);
}

.spacer { height: 10px; }

.mt-10 { margin-top: 10px; }

.todo {
  margin-top: 10px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 13px;
}

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

.field {
  display: grid;
  gap: 6px;
  min-width: 240px;
  flex: 1;
}

label {
  font-size: 12px;
  color: var(--muted);
}

input[type="text"],
input[type="email"],
input[type="url"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.22);
  color: var(--text);
}

input[type="file"] {
  width: 100%;
}

.btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.2s ease;
}

.btn.primary { background: rgba(96, 165, 250, 0.22); border-color: rgba(96, 165, 250, 0.4); }
.btn.secondary { background: rgba(167, 139, 250, 0.18); border-color: rgba(167, 139, 250, 0.4); }
.btn.success { background: rgba(34, 197, 94, 0.18); border-color: rgba(34, 197, 94, 0.5); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn:active { transform: scale(0.98); }

.btn-block {
  width: 100%;
  padding: 14px 16px;
  font-weight: 650;
}

.kv {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 6px 10px;
  font-size: 13px;
  align-items: baseline;
}

.kv .k { color: var(--muted); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
  font-size: 12px;
  color: var(--muted);
}

.msg { margin-top: 12px; font-size: 13px; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--danger); }

.small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 14px 0;
}