:root {
  --zbx-blue-1: #1c3f72;
  --zbx-blue-2: #5b86b9;
  --zbx-blue-3: #a7bfdc;
  --zbx-blue-4: #d8e4f3;
  --zbx-border: #6f8fb3;
  --zbx-panel: #b9cbe3;
  --zbx-link: #0033cc;
  --zbx-text: #111;
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
}
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--zbx-text);
  background: #ffffff;
}

a {
  color: var(--zbx-link);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

.container {
  width: 900px;
  margin: 0 auto;
  padding: 16px 8px 32px;
}

/* Header (2006-ish vibe) */
.zbx-header {
  border-bottom: 1px solid var(--zbx-border);
  background: linear-gradient(to bottom, #ffffff 0%, #ffffff 55%, var(--zbx-blue-4) 56%, var(--zbx-blue-3) 100%);
}

.zbx-top {
  width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 8px 10px;
}

.zbx-brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.zbx-logo {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1px;
}

.zbx-logo span {
  color: var(--zbx-blue-1);
}

.zbx-tagline {
  font-size: 18px;
  font-weight: 700;
  color: var(--zbx-blue-1);
}

.zbx-authlinks {
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.zbx-nav {
  width: 900px;
  margin: 0 auto;
  padding: 6px 8px;
  background: var(--zbx-blue-3);
  border-top: 1px solid var(--zbx-border);
  border-bottom: 1px solid var(--zbx-border);
  text-align: center;
  font-weight: 700;
}

.zbx-nav a {
  color: #ffffff;
}

.zbx-nav .sep {
  color: #ffffff;
  padding: 0 8px;
}

.zbx-nav a.active {
  text-decoration: underline;
}

/* Panels / boxes */
.panel {
  border: 1px solid var(--zbx-border);
  background: var(--zbx-panel);
  padding: 12px;
}

.panel.white {
  background: #ffffff;
}

.panel-title {
  font-weight: 700;
  margin: 0 0 10px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 18px;
}

.welcome h1 {
  font-size: 22px;
  margin: 0 0 8px;
}

.welcome p {
  margin: 8px 0;
  font-size: 13px;
  line-height: 1.35;
}

.small {
  font-size: 12px;
}

/* Home page right column */
.login-box label {
  display: block;
  font-size: 12px;
  margin: 6px 0 2px;
}
.login-box input {
  width: 100%;
  padding: 6px 7px;
  border: 1px solid var(--zbx-border);
  font-size: 13px;
}
.login-box button {
  margin-top: 8px;
  padding: 6px 12px;
  border: 1px solid var(--zbx-border);
  background: #f0f6ff;
  cursor: pointer;
  font-size: 13px;
}
.login-box button:hover {
  background: #e0efff;
}

.grid-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px 14px;
  font-size: 13px;
  padding-top: 8px;
}

.subtle-link {
  font-size: 12px;
  margin-top: 8px;
  text-align: right;
}

/* Game list */
.game-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.game-card {
  border: 1px solid var(--zbx-border);
  background: #ffffff;
  padding: 10px;
}

.game-card h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

.game-meta {
  font-size: 12px;
  color: #333;
  margin: 4px 0;
}

.thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--zbx-border);
  background: #fff;
  display: block;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.actions a, .actions button {
  font-size: 12px;
}

/* Tables */
table.zbx-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
table.zbx-table th, table.zbx-table td {
  border: 1px solid var(--zbx-border);
  padding: 8px;
  font-size: 13px;
  text-align: left;
}
table.zbx-table th {
  background: #f0f6ff;
}

/* Builder */
.builder-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 14px;
  align-items: start;
}

.builder-canvas-wrap {
  border: 1px solid var(--zbx-border);
  background: #fff;
  padding: 10px;
}

canvas#builderCanvas, canvas#gameCanvas {
  width: 100%;
  height: auto;
  border: 1px solid var(--zbx-border);
  display: block;
}

.tool-group {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}

.tool-group:last-child {
  border-bottom: none;
}

.tool-group h3 {
  margin: 0 0 8px;
  font-size: 14px;
}

.tool-group label {
  display: block;
  font-size: 12px;
  margin: 6px 0 2px;
}

.tool-group input[type="text"], .tool-group textarea, .tool-group select {
  width: 100%;
  padding: 6px 7px;
  border: 1px solid var(--zbx-border);
  font-size: 13px;
}

.tool-group input[type="color"] {
  width: 100%;
  height: 34px;
  padding: 0;
  border: 1px solid var(--zbx-border);
  background: #fff;
}

.tool-group textarea {
  resize: vertical;
  min-height: 70px;
}

.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  padding: 6px 10px;
  border: 1px solid var(--zbx-border);
  background: #f0f6ff;
  cursor: pointer;
  font-size: 13px;
}
.btn:hover { background: #e0efff; }
.btn.danger { background: #ffecec; }
.btn.danger:hover { background: #ffdada; }

.notice {
  border: 1px solid var(--zbx-border);
  background: #fffde8;
  padding: 10px;
  font-size: 13px;
}

.error {
  border: 1px solid #a94442;
  background: #f2dede;
  padding: 10px;
  font-size: 13px;
  color: #a94442;
}

.success {
  border: 1px solid #3c763d;
  background: #dff0d8;
  padding: 10px;
  font-size: 13px;
  color: #3c763d;
}

/* Footer */
.zbx-footer {
  border-top: 1px solid var(--zbx-border);
  background: #ffffff;
}

.zbx-footer-inner {
  width: 900px;
  margin: 0 auto;
  padding: 10px 8px 18px;
  font-size: 11px;
  text-align: center;
  color: #111;
}

.muted {
  color: #444;
}