:root {
  --bg: #0b0f19;
  --panel: #131826;
  --border: #232a3d;
  --cyan: #22D3EE;
  --violet: #8B5CF6;
  --text: #e5e7eb;
  --muted: #8b93a7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.topbar .brand {
  font-weight: 700;
  font-size: 18px;
}
.topbar .brand span { color: var(--cyan); }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  color: #04121a;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}
.btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn.danger {
  background: #ef4444;
  color: white;
}
.btn.small { padding: 6px 12px; font-size: 13px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.card h3 { margin-top: 0; }

.screen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.screen-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.screen-card .tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(34,211,238,0.12);
  color: var(--cyan);
  margin-right: 6px;
}
.screen-card .status-off { color: #ef4444; font-size: 12px; }
.screen-card .status-on { color: #34d399; font-size: 12px; }
.screen-card a.name { color: var(--text); font-size: 17px; font-weight: 600; text-decoration: none; }
.screen-card .actions { margin-top: 12px; display: flex; gap: 8px; }
.screen-card .url { color: var(--muted); font-size: 12px; word-break: break-all; margin-top: 6px; }

label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 14px 0 6px;
}
input[type=text], input[type=url], input[type=number], input[type=password], select {
  width: 100%;
  padding: 10px 12px;
  background: #0e1420;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}
input[type=file] { color: var(--muted); font-size: 13px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin: 14px 0; }
.checkbox-row input { width: auto; }

.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-box {
  width: 320px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
}
.error { color: #ef4444; font-size: 13px; margin-top: 10px; }

.ad-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.ad-row img, .ad-row video { width: 64px; height: 40px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.ad-row .grow { flex: 1; min-width: 140px; }
.ad-row input[type=number] { width: 70px; display: inline-block; }
.ad-row form { flex-wrap: wrap; row-gap: 8px; }

.hint { color: var(--muted); font-size: 12px; margin-top: 4px; }
.divider { border: none; border-top: 1px solid var(--border); margin: 24px 0; }