@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:     #0e0d0b;
  --bg2:    #151310;
  --bg3:    #1c1a16;
  --amber:  #f59e0b;
  --orange: #fb923c;
  --text:   #e2d9cc;
  --dim:    #6b6057;
  --border: rgba(255,235,200,0.07);
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Nunito', sans-serif;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 2rem;
  background: rgba(14,13,11,0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 100;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--amber);
  text-decoration: none;
}

.nav-back {
  font-size: 0.78rem;
  color: var(--dim);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  transition: color 0.2s;
}
.nav-back:hover { color: #fff; }

.layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 1.2rem 1.4rem 0.8rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--amber);
  letter-spacing: 3px;
  margin-bottom: 0.2rem;
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}

.tools-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.8rem;
}

.tool-item {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.9rem 1rem;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s;
  margin-bottom: 0.4rem;
}

.tool-item:hover { background: var(--bg3); }
.tool-item.active { background: rgba(245,158,11,0.07); border-color: rgba(245,158,11,0.22); }

.tool-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.tool-info h3 { font-size: 0.88rem; font-weight: 600; color: #fff; margin-bottom: 0.2rem; }
.tool-info p  { font-size: 0.75rem; color: var(--dim); line-height: 1.4; }

.tool-tags {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.tool-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(245,158,11,0.07);
  border: 1px solid rgba(245,158,11,0.15);
  color: var(--amber);
}

.sidebar-footer {
  padding: 1rem 1.4rem;
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--dim);
  letter-spacing: 1px;
}

.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.tool-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1.2rem;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tool-bar-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-bar-url {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--dim);
}

.btn-open {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--amber);
  text-decoration: none;
  padding: 0.3rem 0.8rem;
  border: 1px solid rgba(245,158,11,0.22);
  border-radius: 999px;
  transition: background 0.2s;
}
.btn-open:hover { background: rgba(245,158,11,0.1); }

#toolFrame {
  flex: 1;
  border: none;
  width: 100%;
  display: none;
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  color: var(--dim);
  text-align: center;
  padding: 2rem;
}

.empty-icon { font-size: 2.5rem; opacity: 0.4; }
.empty-state p { font-size: 0.88rem; }

@media (max-width: 640px) {
  .sidebar { width: 100%; position: absolute; z-index: 10; height: 100%; transform: translateX(-100%); transition: transform 0.3s; }
  .sidebar.open { transform: translateX(0); }
}