:root {
  --bg: #0f1318;
  --bg-soft: #171c22;
  --panel: #1d242d;
  --line: #2b3642;
  --text: #edf2f7;
  --muted: #9aabbd;
  --accent: #59c7a5;
  --danger: #ef6b73;
  --warn: #ffb357;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: radial-gradient(circle at top, #1a2430 0, #0f1318 55%); color: var(--text); font-family: "Segoe UI", system-ui, sans-serif; }
button, input, select { font: inherit; }
button { cursor: pointer; border: 0; border-radius: 10px; padding: 10px 14px; background: var(--accent); color: #071511; font-weight: 700; }
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
input, select { width: 100%; background: #10161d; border: 1px solid var(--line); border-radius: 10px; color: var(--text); padding: 10px 12px; }
.hidden { display: none !important; }
.eyebrow { text-transform: uppercase; letter-spacing: .16em; font-size: 11px; color: var(--accent); margin: 0 0 8px; }
.subtle { color: var(--muted); }
.error { color: var(--danger); min-height: 20px; }

.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(420px, 100%); background: rgba(23, 28, 34, .92); border: 1px solid rgba(89, 199, 165, .15); border-radius: 24px; padding: 32px; box-shadow: 0 24px 80px rgba(0,0,0,.35); }
.login-card h1 { margin: 0 0 8px; font-size: 36px; }
.login-card form { display: grid; gap: 14px; margin-top: 24px; }
.login-card label { display: grid; gap: 8px; }

#panel-view { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { border-right: 1px solid var(--line); background: rgba(15, 19, 24, .9); padding: 28px 20px; display: flex; flex-direction: column; justify-content: space-between; gap: 28px; }
.sidebar h2 { margin: 0; }
.nav { display: grid; gap: 10px; }
.nav-link { width: 100%; text-align: left; background: transparent; color: var(--text); border: 1px solid transparent; }
.nav-link.active { background: rgba(89, 199, 165, .12); border-color: rgba(89, 199, 165, .18); }

.content { padding: 28px; display: grid; }
.tab { display: none; gap: 18px; }
.tab.active { display: grid; }
.tab-header { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.tab-header h3 { margin: 0; font-size: 28px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.stat-card, .panel, .project-card { background: rgba(29, 36, 45, .92); border: 1px solid var(--line); border-radius: 18px; padding: 18px; }
.stat-card h4, .panel-title { margin: 0 0 10px; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .12em; }
.stat-value { font-size: 30px; font-weight: 800; }
.stat-meta { color: var(--muted); font-size: 13px; margin-top: 6px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.list { display: grid; gap: 10px; }
.list-item { padding: 12px 14px; border-radius: 14px; background: rgba(16, 22, 29, .9); display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.tag { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 700; }
.tag.ok { background: rgba(89, 199, 165, .18); color: #8bf0d2; }
.tag.off { background: rgba(239, 107, 115, .18); color: #ff9aa0; }
.tag.warn { background: rgba(255, 179, 87, .16); color: #ffd59b; }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.project-card { display: grid; gap: 14px; }
.project-card h4 { margin: 0; font-size: 20px; }
.project-meta { display: grid; gap: 8px; color: var(--muted); font-size: 14px; }
.project-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.project-actions button, .project-actions a { text-decoration: none; }

.terminal-layout { display: grid; grid-template-columns: 320px 1fr; gap: 14px; min-height: 70vh; }
.session-pane, .terminal-pane { display: grid; gap: 14px; align-content: start; }
.session-create { display: grid; gap: 10px; }
.session-entry { width: 100%; background: rgba(16, 22, 29, .9); border: 1px solid var(--line); color: var(--text); padding: 12px; border-radius: 14px; text-align: left; }
.session-entry strong { display: block; }
.terminal-pane { min-height: 70vh; }
.terminal-meta { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.terminal-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}
button.small {
  padding: 7px 10px;
  font-size: 12px;
}
#terminal-output {
  min-height: 60vh;
  height: 60vh;
  border-radius: 14px;
  overflow: auto;
  background: #090d12;
  padding: 12px;
  margin: 0;
  color: #e8eef5;
  font: 14px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  width: 100%;
  border: 1px solid var(--line);
  user-select: text;
}
#terminal-output .xterm {
  height: 100%;
}
#terminal-output .xterm-viewport {
  overflow-y: auto !important;
  scrollbar-color: #425468 #090d12;
}
#terminal-output .xterm-screen canvas {
  image-rendering: pixelated;
}

@media (max-width: 1100px) {
  #panel-view { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
  .grid-2, .terminal-layout { grid-template-columns: 1fr; }
}