:root {
  color-scheme: dark;
  --bg: #111317;
  --panel: #181b20;
  --line: #2c313a;
  --text: #eef1f5;
  --muted: #98a1ad;
  --accent: #45b39d;
  --accent-strong: #2f9e87;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button,
.primary {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #222832;
  color: var(--text);
  padding: 9px 12px;
  cursor: pointer;
  text-decoration: none;
}

button:hover,
.primary:hover {
  border-color: #4d5969;
}

.primary {
  display: inline-block;
  background: var(--accent-strong);
  border-color: var(--accent);
}

.topbar {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
  background: #15181d;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 20px;
}

h2 {
  font-size: 14px;
  margin-bottom: 10px;
  color: var(--muted);
  text-transform: uppercase;
}

.topbar p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  min-height: calc(100vh - 72px);
}

.sidebar {
  border-right: 1px solid var(--line);
  background: var(--panel);
  padding: 18px;
  overflow-y: auto;
}

.sidebar section + section {
  margin-top: 26px;
}

.sessions {
  display: grid;
  gap: 10px;
}

.session-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.session-item .attach {
  display: grid;
  gap: 5px;
  width: 100%;
  text-align: left;
  border: 0;
  border-radius: 0;
  background: #1f232a;
}

.session-item span {
  color: var(--muted);
  font-size: 12px;
}

.session-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.session-actions button {
  border-radius: 0;
  border-width: 1px 0 0 0;
}

.session-actions button + button {
  border-left-width: 1px;
}

form {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #111317;
  color: var(--text);
  padding: 9px 10px;
}

.terminal-panel {
  min-width: 0;
  display: grid;
  grid-template-rows: 44px minmax(0, 1fr);
}

.terminal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: #15181d;
}

#status {
  color: var(--muted);
  font-size: 13px;
}

#terminal {
  min-height: 0;
  padding: 10px;
}

.login-page {
  display: grid;
  place-items: center;
}

.login-shell {
  width: min(420px, calc(100vw - 32px));
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.login-shell p {
  color: var(--muted);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .terminal-panel {
    min-height: 70vh;
  }
}