:root {
  --bg: #0d1117;
  --panel: #161b22;
  --item-bg: rgba(255, 255, 255, 0.03);
  --item-hover: rgba(255, 255, 255, 0.06);
  --border: #30363d;
  --border-focus: #484f58;
  --text-main: #e6edf3;
  --text-muted: #848d97;
  --accent: #2f81f7;
  --accent-soft: rgba(47, 129, 247, 0.1);
  --success: #3fb950;
  --warning: #d29922;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  padding: 20px;
  background-color: var(--bg);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 13px;
  line-height: 1.5;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-focus); }

header {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

h1 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

h1::before {
  content: "";
  display: block;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 3px;
  box-shadow: 0 0 10px var(--accent);
}

.actions {
  display: flex;
  gap: 8px;
}

button {
  all: unset;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

button:hover {
  background: var(--item-hover);
  border-color: var(--border-focus);
}

#refresh-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

#refresh-btn:hover {
  background: #4493f8;
  border-color: #4493f8;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 20px;
  overflow: hidden;
}

h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 0 0 12px 0;
  font-weight: 600;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.session-title h4 {
  font-size: 14px;
  font-weight: 600;
  margin: 0;
  color: var(--accent);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 8px 0;
}

.tag {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid transparent;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 1px; /* Divider effect */
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 12px;
}

.item {
  background: var(--panel);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: background 0.1s ease;
}

.item:hover {
  background: var(--item-hover);
}

.item-title {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-main);
}

.item-url {
  color: var(--text-muted);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.row-actions {
  display: flex;
  gap: 4px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.row-actions button {
  padding: 4px 8px;
  font-size: 11px;
  background: transparent;
}

.empty {
  color: var(--text-muted);
  text-align: center;
  padding: 40px 0;
  font-size: 12px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: rgba(110, 118, 129, 0.4);
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 11px;
}

#summary code {
  color: var(--warning);
}

/* Summary Grid */
#summary .tags {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 8px;
}

#summary .tag {
  text-align: center;
  padding: 6px;
}