:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --text: #1c2127;
  --muted: #5f6b7a;
  --line: #d9dde3;
  --accent: #2b5fd9;
  --good: #1f7a3f;
  --bad: #b3261e;
  --term: #101418;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --control: 32px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --panel: #171b21;
    --text: #e3e7ec;
    --muted: #97a3b1;
    --line: #2a313a;
    --accent: #7aa2ff;
    --good: #5fc788;
    --bad: #ff8a80;
  }
}

/* Touch screens get 44px targets. */
@media (pointer: coarse) {
  :root { --control: 44px; }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* The app is exactly the visible viewport: app.js follows visualViewport so
   an on-screen keyboard shrinks the terminal instead of covering it. */
#app {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--vv-top, 0px);
  height: var(--vv-height, 100%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding:
    max(8px, env(safe-area-inset-top))
    max(10px, env(safe-area-inset-right))
    max(8px, env(safe-area-inset-bottom))
    max(10px, env(safe-area-inset-left));
}

h1 { margin: 0; font-size: 17px; white-space: nowrap; }
h1 span { color: var(--muted); font-weight: 400; }
h2 { margin: 0; font-size: 15px; }
h3 { margin: 16px 0 6px; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
small { color: var(--muted); font-weight: 400; }

/* ---- top bar ------------------------------------------------------------ */

#topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 0 0 auto;
}

#status {
  min-width: 0;
  margin: 0;
  padding: 3px 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  font-size: 13px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.topbar-actions {
  display: flex;
  gap: 6px;
  margin-left: auto;
  flex: 0 0 auto;
}

#drawer-toggle[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }

@media (max-width: 599px) {
  h1 span { display: none; }
}

#auth {
  flex: 0 0 auto;
  max-height: 30%;
  margin: 0;
  padding: 8px 10px;
  overflow: auto;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--panel);
  word-break: break-all;
}

#auth a { color: var(--accent); }

/* ---- controls ----------------------------------------------------------- */

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 500;
}

label input, label textarea, label select {
  display: block;
  width: 100%;
  margin-top: 3px;
}

label.check { display: flex; align-items: center; min-height: var(--control); font-weight: 400; }
label.check input { width: auto; min-height: 0; margin: 0 8px 0 0; padding: 0; }

input, textarea, button, select {
  font: inherit;
  color: inherit;
}

input, textarea, select {
  min-height: var(--control);
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--bg);
}

textarea { font-family: var(--mono); font-size: 12px; resize: vertical; }

details { margin: 4px 0 10px; }
summary {
  display: list-item;
  min-height: var(--control);
  padding: 4px 0;
  cursor: pointer;
  color: var(--muted);
  line-height: calc(var(--control) - 8px);
}

.buttons { display: flex; flex-wrap: wrap; gap: 8px; }

button {
  min-height: var(--control);
  min-width: var(--control);
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--bg);
  cursor: pointer;
  touch-action: manipulation;
}

button[type="submit"], button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--bad); }
button:disabled { opacity: 0.5; cursor: default; }
button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent); color: #fff; }

button svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Phones zoom into focused fields under 16px; xterm's hidden input too. */
@media (pointer: coarse) {
  input, textarea, select { font-size: 16px; }
  label.check input { width: 22px; height: 22px; }
  .xterm .xterm-helper-textarea { font-size: 16px !important; }
}

/* ---- workspace ---------------------------------------------------------- */

#workspace {
  position: relative;
  display: flex;
  gap: 10px;
  flex: 1 1 auto;
  min-height: 0;
}

.panel, #terminal-panel, #drawer {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

#terminal-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  padding: 8px;
}

#ssh-form {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 6px 10px;
  /* Keep tabs and helper keys visible when a phone keyboard leaves little
     room. The form scrolls so every field and Open terminal stay reachable. */
  flex: 0 1 auto;
  min-height: 0;
  overflow-y: auto;
}

#ssh-form label { margin: 0; font-size: 12px; color: var(--muted); }
#ssh-form label input, #ssh-form label select { margin-top: 2px; color: var(--text); font-size: 14px; }
#ssh-form .peer { flex: 1; min-width: 160px; max-width: 400px; }

/* On a phone: a compact grid; once terminals exist the form folds away
   until "+" asks for it. */
@media (max-width: 599px) {
  #ssh-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
  }
  #ssh-form .peer { width: auto; min-width: 0; }
  #ssh-form label input, #ssh-form label select { font-size: 16px; }
  #terminal-panel.has-tabs:not(.form-open) #ssh-form { display: none; }
}

dialog {
  width: min(400px, calc(100vw - 32px));
  max-height: calc(var(--vv-height, 100dvh) - 32px);
  padding: 20px;
  overflow: auto;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

dialog::backdrop { background: rgb(0 0 0 / 65%); }
dialog form { display: grid; gap: 12px; }
dialog h2 { margin: 0; font-size: 18px; overflow-wrap: anywhere; }
dialog p { margin: 0; color: var(--muted); font-size: 14px; }
dialog label { margin: 0; }

#notice {
  flex: 0 0 auto;
  margin: 0;
  padding: 6px 10px;
  border: 1px solid var(--bad);
  border-radius: 5px;
  color: var(--bad);
  word-break: break-word;
}

/* ---- tabs --------------------------------------------------------------- */

#tabbar {
  display: flex;
  align-items: stretch;
  gap: 6px;
  flex: 0 0 auto;
  min-width: 0;
}

#tabs {
  position: relative;
  display: flex;
  gap: 4px;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.tab {
  display: flex;
  flex: 0 0 auto;
  max-width: min(15rem, 100%);
  min-height: var(--control);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
}

.tab.active { border-color: var(--accent); background: var(--panel); box-shadow: inset 0 -2px 0 var(--accent); }

.tab button {
  min-height: 0;
  border: 0;
  background: transparent;
}

.tab-select {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  padding: 0 4px 0 10px;
}

.tab-label {
  overflow: hidden;
  font-family: var(--mono);
  font-size: 13px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.tab:not(.live) .tab-label { color: var(--muted); }

.dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--muted);
}

.tab.live .dot { background: var(--good); }

.tab-close { padding: 0 10px; color: var(--muted); font-size: 17px; line-height: 1; }
.tab-close:hover { color: var(--bad); }

.tab-actions {
  display: flex;
  gap: 4px;
  flex: 0 0 auto;
}

.tab-actions button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
}

/* Icons only where width is scarce; the text stays for screen readers. */
@media (max-width: 899px) {
  .tab-actions .label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .tab-actions button { padding: 0; }
}

/* ---- terminals ---------------------------------------------------------- */

#terminal {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  border-radius: 6px;
  background: var(--term);
}

.pane {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

/* Link and approval controls for one session, above its terminal. */
.term-links {
  flex: 0 0 auto;
  max-height: 40%;
  overflow: auto;
  background: var(--panel);
  color: var(--text);
}

.term-links:empty { display: none; }

.ssh-auth-banner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding: 8px 10px;
  border-left: 3px solid var(--accent);
  border-bottom: 1px solid var(--line);
}

.ssh-auth-link {
  display: inline-flex;
  align-items: center;
  min-height: var(--control);
  padding: 4px 10px;
  border-radius: 5px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

.ssh-auth-dismiss { margin-left: auto; padding: 0; }

.ssh-forwarding-status { padding: 8px 10px; overflow-wrap: anywhere; }
.ssh-forwarding-status:empty { display: none; }
.ssh-loopback-link { margin: 4px 0; text-align: left; }

.ssh-link-list { margin: 0; padding: 0 10px; }
.ssh-link-list ul { margin: 0 0 6px; padding: 0; list-style: none; }
.ssh-link-list a {
  display: block;
  min-height: var(--control);
  padding: 8px 0;
  color: var(--accent);
  font: 12px/1.4 var(--mono);
  overflow-wrap: anywhere;
}

.xterm-host {
  flex: 1 1 auto;
  min-height: 0;
  padding: 4px 6px;
}

/* ---- key row (touch screens) -------------------------------------------- */

#keybar {
  display: none;
  gap: 4px;
  flex: 0 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
}

@media (pointer: coarse) {
  #keybar { display: flex; }
}

#keybar button {
  flex: 1 0 var(--control);
  padding: 0 6px;
  font-family: var(--mono);
  font-size: 15px;
}

@media (pointer: coarse) and (max-width: 430px) {
  #keybar { gap: 0; }
  #keybar button { border-radius: 0; }
  #keybar button:first-child { border-radius: 5px 0 0 5px; }
  #keybar button:last-child { border-radius: 0 5px 5px 0; }
}

/* ---- drawer: settings and diagnostics ------------------------------------ */

#drawer {
  flex: 0 0 min(400px, 42%);
  min-width: 0;
  padding: 0 14px 14px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* Below 900px it covers the workspace instead of squeezing the terminal. */
@media (max-width: 899px) {
  #drawer {
    position: absolute;
    inset: 0;
    z-index: 20;
    box-shadow: 0 8px 30px rgb(0 0 0 / 0.25);
  }
}

.drawer-head {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 0 -14px 4px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

#drawer-title:focus { outline: none; }

#connect h3 { margin-top: 10px; }
#drawer > details > summary { font-weight: 600; color: var(--text); }

#log {
  height: 240px;
  margin: 0;
  padding: 8px;
  overflow: auto;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 5px;
  font: 12px/1.4 var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
}

.scroll { overflow-x: auto; }

table { border-collapse: collapse; width: 100%; }
th, td { padding: 4px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 12px; }
td { overflow-wrap: anywhere; }
td.label { color: var(--muted); width: 110px; }
td.mono { font-family: var(--mono); }
td.small { font-size: 12px; }
td.online { color: var(--good); }
td.offline { color: var(--muted); }
td button { padding: 2px 10px; }

/* ---- focus mode: tabs, essential controls and the terminal --------------- */

body.focus-mode #app {
  gap: 4px;
  padding:
    env(safe-area-inset-top)
    env(safe-area-inset-right)
    env(safe-area-inset-bottom)
    env(safe-area-inset-left);
}

body.focus-mode #topbar,
body.focus-mode #drawer { display: none; }
body.focus-mode #terminal-panel:not(.form-open) #ssh-form { display: none; }

body.focus-mode #terminal-panel {
  gap: 4px;
  padding: 4px;
  border: 0;
  border-radius: 0;
}

body.focus-mode #terminal { border-radius: 0; }