:root {
  color-scheme: dark;
  --bg: #090c0f;
  --panel: #10151a;
  --panel-strong: #151c22;
  --panel-soft: #0d1217;
  --line: #26313a;
  --line-bright: #3c4b57;
  --ink: #e8edf0;
  --muted: #82909b;
  --dim: #5d6c77;
  --amber: #f2b84b;
  --amber-strong: #ffc75e;
  --green: #77d69a;
  --red: #e47d73;
  --radius: 5px;
  --shadow: 0 24px 70px rgba(0,0,0,.34);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-width: 320px; min-height: 100%; background: var(--bg); color: var(--ink); }
body { font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
[hidden] { display: none !important; }

.app-shell { min-height: 100vh; background: var(--bg); }
.auth-view { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: var(--bg); }
.auth-panel { width: min(100%, 440px); padding: 42px; border: 1px solid var(--line); border-top: 2px solid var(--amber); background: rgba(16,21,26,.92); box-shadow: var(--shadow); }
.brand-lockup { display: flex; align-items: center; gap: 12px; }
.brand-lockup.compact { gap: 9px; }
.brand-mark { color: var(--amber); font: 700 18px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: 0; }
.eyebrow { margin: 0; color: var(--amber); font: 700 10px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: 0; }
.brand-subtitle { margin: 3px 0 0; color: var(--muted); font: 9px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: 0; }
.auth-panel h1 { margin: 55px 0 9px; font: 600 39px/1.08 ui-sans-serif, system-ui, sans-serif; letter-spacing: 0; }
.auth-copy { margin: 0 0 31px; color: var(--muted); font-size: 14px; }
.login-form { display: grid; gap: 10px; }
.login-form label, .dialog-panel label { color: var(--muted); font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
input { width: 100%; border: 1px solid var(--line-bright); border-radius: var(--radius); padding: 13px 14px; background: var(--panel-soft); color: var(--ink); }
input:hover { border-color: var(--muted); }
.primary-button, .secondary-button, .danger-button, .text-button { border: 0; border-radius: var(--radius); font-weight: 650; }
.primary-button { min-height: 44px; margin-top: 8px; padding: 0 15px; background: var(--amber); color: #1d170c; }
.primary-button:hover { background: var(--amber-strong); }
.secondary-button { min-height: 40px; padding: 0 14px; border: 1px solid var(--line-bright); background: transparent; color: var(--ink); }
.secondary-button:hover { border-color: var(--ink); }
.danger-button { min-height: 40px; padding: 0 14px; background: var(--red); color: #210f0e; }
.text-button { padding: 7px 0; background: transparent; color: var(--muted); font-size: 12px; }
.text-button:hover { color: var(--amber); }
.form-error { margin: 4px 0 0; color: var(--red); font-size: 12px; }
.auth-footer { display: flex; align-items: center; gap: 8px; margin-top: 38px; color: var(--dim); font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; }
.status-pip { display: inline-block; width: 7px; height: 7px; flex: 0 0 7px; border-radius: 50%; background: var(--dim); }
.status-pip.online { background: var(--green); box-shadow: 0 0 0 3px rgba(119,214,154,.12); }

.workspace-view { min-height: 100vh; display: flex; flex-direction: column; }
.topbar { min-height: 62px; display: flex; align-items: center; gap: 28px; padding: 0 22px; border-bottom: 1px solid var(--line); background: rgba(9,12,15,.94); }
.topbar-context { display: flex; align-items: center; gap: 8px; margin-right: auto; color: var(--dim); font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
.context-line { width: 22px; height: 1px; background: var(--line-bright); }
.workspace-grid { min-height: 0; flex: 1; display: grid; grid-template-columns: 245px minmax(0, 1fr); }
.session-rail { position: relative; display: flex; flex-direction: column; min-height: calc(100vh - 62px); padding: 24px 14px 16px; border-right: 1px solid var(--line); background: var(--panel-soft); }
.rail-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 0 8px 17px; }
.rail-heading h2 { margin: 5px 0 0; font-size: 17px; font-weight: 650; }
.rail-summary { padding: 0 8px 14px; color: var(--dim); font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; }
.icon-button { width: 32px; height: 32px; display: inline-grid; place-items: center; padding: 0; border: 1px solid var(--line-bright); border-radius: var(--radius); background: transparent; color: var(--muted); font: 700 16px ui-monospace, SFMono-Regular, Consolas, monospace; }
.icon-button:hover { border-color: var(--amber); color: var(--amber); }
.icon-button.accent { border-color: rgba(242,184,75,.52); color: var(--amber); }
.menu-button { display: none; }
.session-list { display: grid; gap: 4px; margin: 0; padding: 0; list-style: none; }
.session-item { display: grid; grid-template-columns: minmax(0,1fr) 26px; align-items: center; min-height: 52px; border-left: 2px solid transparent; border-radius: 0 var(--radius) var(--radius) 0; }
.session-item.active { border-left-color: var(--amber); background: var(--panel-strong); }
.session-select { min-width: 0; align-self: stretch; padding: 8px 9px; border: 0; background: transparent; color: var(--muted); text-align: left; }
.session-item.active .session-select { color: var(--ink); }
.session-name { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font: 600 12px ui-monospace, SFMono-Regular, Consolas, monospace; }
.session-detail { display: flex; align-items: center; gap: 6px; margin-top: 4px; color: var(--dim); font: 9px ui-monospace, SFMono-Regular, Consolas, monospace; }
.session-detail .status-pip { width: 5px; height: 5px; flex-basis: 5px; }
.session-item.active .session-detail .status-pip { background: var(--green); }
.session-close { width: 26px; height: 26px; margin-right: 6px; padding: 0; border: 0; border-radius: var(--radius); background: transparent; color: var(--dim); }
.session-close:hover { background: rgba(228,125,115,.12); color: var(--red); }
.rail-footer { display: flex; align-items: center; gap: 8px; margin-top: auto; padding: 16px 8px 0; border-top: 1px solid var(--line); color: var(--dim); font: 9px ui-monospace, SFMono-Regular, Consolas, monospace; }
.drawer-scrim { display: none; }

.terminal-panel { min-width: 0; min-height: calc(100vh - 62px); display: grid; grid-template-rows: auto minmax(0,1fr) auto; background: #070a0d; }
.terminal-toolbar { min-height: 59px; display: flex; align-items: center; gap: 14px; padding: 0 19px; border-bottom: 1px solid var(--line); background: var(--panel); }
.terminal-heading { min-width: 0; display: grid; gap: 4px; }
.terminal-heading > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font: 600 13px ui-monospace, SFMono-Regular, Consolas, monospace; }
.terminal-meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--dim); font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; }
.toolbar-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.connection-status { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }
.connection-status[data-state="connected"] { color: var(--green); }
.connection-status[data-state="connected"] .status-pip { background: var(--green); }
.connection-status[data-state="connecting"], .connection-status[data-state="reconnecting"] { color: var(--amber); }
.connection-status[data-state="connecting"] .status-pip, .connection-status[data-state="reconnecting"] .status-pip { background: var(--amber); }
.terminal-mount { min-width: 0; min-height: 0; padding: 16px 16px 10px; overflow: hidden; }
.terminal-mount .xterm { height: 100%; }
.terminal-mount .xterm-viewport { background: transparent !important; }
.terminal-statusbar { display: flex; justify-content: space-between; gap: 16px; min-height: 30px; padding: 8px 18px; border-top: 1px solid var(--line); color: var(--dim); font: 9px ui-monospace, SFMono-Regular, Consolas, monospace; }

.dialog-panel { width: min(calc(100% - 32px), 420px); padding: 26px; border: 1px solid var(--line-bright); border-top: 2px solid var(--amber); border-radius: var(--radius); background: var(--panel); color: var(--ink); box-shadow: var(--shadow); }
.dialog-panel::backdrop { background: rgba(0,0,0,.68); backdrop-filter: blur(2px); }
.dialog-heading h2 { margin: 7px 0 20px; font-size: 19px; }
.dialog-hint, .dialog-copy { margin: 9px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 24px; }

@media (max-width: 720px) {
  .auth-view { padding: 16px; }
  .auth-panel { padding: 29px 23px; }
  .auth-panel h1 { margin-top: 48px; font-size: 30px; }
  .topbar { min-height: 55px; padding: 0 15px; }
  .topbar-context { display: none; }
  .workspace-grid { display: block; position: relative; }
  .session-rail { position: absolute; z-index: 4; top: 0; bottom: 0; left: 0; width: min(84vw, 295px); min-height: calc(100vh - 55px); transform: translateX(-102%); transition: transform .2s ease; box-shadow: 18px 0 44px rgba(0,0,0,.35); }
  .workspace-view.drawer-open .session-rail { transform: translateX(0); }
  .drawer-scrim { position: absolute; z-index: 3; inset: 0; display: block; background: rgba(0,0,0,.62); }
  .workspace-view:not(.drawer-open) .drawer-scrim { display: none; }
  .menu-button { display: inline-grid; }
  .terminal-panel { min-height: calc(100vh - 55px); }
  .terminal-toolbar { min-height: 55px; padding: 0 12px; gap: 10px; }
  .terminal-mount { padding: 10px 7px 7px; }
  .terminal-statusbar { padding: 7px 12px; }
  .connection-status { max-width: 82px; overflow: hidden; }
  .connection-status > span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } }