:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1f2630;
  --panel3: #262e3a;
  --border: #2d333b;
  --border-soft: #232a33;
  --text: #e6edf3;
  --dim: #8b949e;
  --dim2: #6e7681;
  --accent: #d97757;
  --accent2: #e8956f;
  --accent-soft: rgba(217, 119, 87, .14);
  --green: #3fb950;
  --red: #f85149;
  --amber: #f0b429;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --r-sm: 9px;
  --r-md: 12px;
  --r-lg: 16px;
  --t-fast: 130ms cubic-bezier(.3, .7, .4, 1);
  --shadow-1: 0 2px 8px rgba(0, 0, 0, .35);
  --shadow-2: 0 8px 28px rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overscroll-behavior: none; }
/* manipulation: taps stay cancelable (no double-tap-zoom gesture may claim
   them), so the touchend preventDefault in bindKey never silently fails */
button { touch-action: manipulation; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, Roboto, "Segoe UI", sans-serif;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.ic { width: 20px; height: 20px; display: block; pointer-events: none; }

.view {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  padding-top: var(--safe-top);
  background: var(--bg);
  animation: view-in 180ms ease-out;
}
@keyframes view-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

header {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--panel);
  flex: 0 0 auto;
}
header h1 {
  font-size: 17px; font-weight: 650; flex: 1; letter-spacing: .01em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

main { flex: 1 1 auto; overflow-y: auto; }
main.pad { padding: 14px; }

/* ---- buttons ---- */
.icon-btn {
  display: flex; align-items: center; justify-content: center;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-sm);
  min-width: 40px; height: 40px; padding: 0 10px;
  font-size: 15px; font-weight: 600; cursor: pointer; flex: 0 0 auto;
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast), opacity var(--t-fast);
}
.icon-btn.txt { font-size: 14px; }
.icon-btn.ghost { background: transparent; border-color: transparent; color: var(--dim); }
.icon-btn.danger { color: var(--red); }
.icon-btn.pressed, .icon-btn:active { transform: scale(.92); background: var(--panel3); }
.icon-btn.ghost.pressed, .icon-btn.ghost:active { color: var(--text); background: var(--panel2); }
.icon-btn:disabled { opacity: .45; }
#btn-bell.on { color: var(--accent2); border-color: rgba(217, 119, 87, .5); background: var(--accent-soft); }

.btn {
  display: block; width: 100%;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 12px; font-size: 15px; cursor: pointer;
  transition: transform var(--t-fast), filter var(--t-fast);
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 650; }
.btn.big { padding: 15px; font-size: 16px; margin-top: 16px; }
.btn:active, .btn.pressed { transform: scale(.985); filter: brightness(1.12); }
.btn:disabled { opacity: .55; }

/* ---- session list ---- */
.quickchat { display: flex; gap: 8px; padding: 12px 12px 2px; flex: 0 0 auto; }
.quickchat button {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 12px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background var(--t-fast), transform var(--t-fast);
}
.quickchat button .ic { width: 18px; height: 18px; color: var(--accent2); }
.quickchat button:active, .quickchat button.pressed { background: var(--panel2); transform: scale(.97); }
.quickchat button:disabled { opacity: .6; }

#btn-chat-pinned.on { border-color: rgba(217, 119, 87, .5); background: var(--accent-soft); }

/* ---- pinned chats ---- */
.pins-panel {
  flex: 0 0 auto; margin: 10px 12px 0;
  background: var(--panel); border: 1px solid var(--border-soft);
  border-radius: var(--r-lg); overflow-y: auto; max-height: 45vh;
  animation: card-in 180ms ease-out;
}
.pin-row {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px; border-bottom: 1px solid var(--border-soft);
  cursor: pointer;
  transition: background var(--t-fast), opacity var(--t-fast);
}
.pin-row:last-child { border-bottom: none; }
.pin-row:active { background: var(--panel2); }
.pin-row.busy { opacity: .5; pointer-events: none; }
.pin-row .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--dim2); flex: 0 0 auto; }
.pin-row .dot.on { background: var(--green); }
.pin-main { flex: 1 1 auto; min-width: 0; }
.pin-title {
  font-size: 14px; font-weight: 600; line-height: 1.35;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pin-meta { font-size: 11.5px; color: var(--dim2); margin-top: 2px; }
.pin-del {
  display: flex; align-items: center; justify-content: center;
  background: none; border: none; color: var(--dim2);
  width: 34px; height: 34px; margin: -6px -8px -6px 0;
  border-radius: 50%; cursor: pointer;
  transition: color var(--t-fast), background var(--t-fast);
}
.pin-del .ic { width: 16px; height: 16px; }
.pin-del:active, .pin-del.pressed { color: var(--red); background: rgba(248, 81, 73, .12); }
.pins-empty { padding: 18px 16px; font-size: 13px; color: var(--dim2); text-align: center; }

#btn-pin.on { color: var(--accent2); border-color: rgba(217, 119, 87, .5); background: var(--accent-soft); }

#session-list { padding-bottom: 96px; }
.session-card {
  background: var(--panel); border: 1px solid var(--border-soft);
  border-radius: var(--r-lg); margin: 10px 12px; padding: 12px 14px;
  cursor: pointer;
  transition: transform var(--t-fast), border-color var(--t-fast), background var(--t-fast);
  animation: card-in 220ms ease-out backwards;
}
.session-card:active, .session-card.pressed { transform: scale(.98); background: var(--panel2); }
@keyframes card-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.session-card .row1 { display: flex; align-items: center; gap: 8px; }
.session-card .name { font-weight: 650; font-size: 16px; flex: 0 1 auto; min-width: 45%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.session-card .row1 .meta { flex: 1 1 0; min-width: 0; text-align: right; }
.session-card .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--dim2); flex: 0 0 auto; }
.session-card .dot.on {
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(63, 185, 80, .55);
  animation: dot-pulse 2.2s ease-out infinite;
}
@keyframes dot-pulse {
  0% { box-shadow: 0 0 0 0 rgba(63, 185, 80, .5); }
  70% { box-shadow: 0 0 0 7px rgba(63, 185, 80, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 185, 80, 0); }
}
.session-card .card-kill {
  display: flex; align-items: center; justify-content: center;
  background: none; border: none; color: var(--dim2);
  width: 34px; height: 34px; margin: -6px -8px -6px 0;
  border-radius: 50%; cursor: pointer;
  transition: color var(--t-fast), background var(--t-fast);
}
.session-card .card-kill .ic { width: 16px; height: 16px; }
.session-card .card-kill:active, .session-card .card-kill.pressed { color: var(--red); background: rgba(248, 81, 73, .12); }
.session-card .meta { color: var(--dim); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.session-card .title {
  margin-top: 5px; font-size: 13.5px; line-height: 1.35; color: var(--accent2);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.session-card .path { margin-top: 3px; font-family: "SF Mono", Menlo, monospace; font-size: 11px; color: var(--dim2); }
.session-card pre {
  position: relative;
  margin-top: 8px; padding: 8px 10px; border-radius: var(--r-sm);
  background: #0a0d12; color: var(--dim);
  font: 11px/1.45 "SF Mono", Menlo, monospace;
  white-space: pre-wrap; word-break: break-all;
  max-height: 90px; overflow: hidden;
  -webkit-mask-image: linear-gradient(180deg, #000 68%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 68%, transparent 100%);
}

.empty { text-align: center; color: var(--dim); padding: 70px 24px; }
.empty .ic { margin: 0 auto 14px; color: var(--dim2); }
.empty .sub { font-size: 13px; color: var(--dim2); margin-top: 6px; }

.fab {
  position: fixed; left: 16px; right: 16px;
  bottom: calc(16px + var(--safe-bottom));
  display: flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(180deg, var(--accent2), var(--accent));
  color: #fff; border: none; border-radius: var(--r-lg);
  padding: 15px; font-size: 16px; font-weight: 650;
  box-shadow: var(--shadow-2);
  cursor: pointer;
  transition: transform var(--t-fast), filter var(--t-fast);
}
.fab .ic { width: 19px; height: 19px; }
.fab:active, .fab.pressed { transform: scale(.97); filter: brightness(1.08); }

/* ---- new session ---- */
.dir-path {
  font: 12px/1.4 "SF Mono", Menlo, monospace;
  color: var(--accent2); word-break: break-all; margin-bottom: 8px;
}
.dir-list {
  border: 1px solid var(--border); border-radius: var(--r-md);
  overflow: hidden; margin-bottom: 16px;
  max-height: 40vh; overflow-y: auto;
  background: var(--panel);
}
.dir-list button {
  display: flex; align-items: center; gap: 9px; width: 100%; text-align: left;
  background: none; border: none; border-bottom: 1px solid var(--border-soft);
  color: var(--text); padding: 11px 14px; font-size: 14px; cursor: pointer;
  transition: background var(--t-fast);
}
.dir-list button .ic { width: 17px; height: 17px; color: var(--accent2); flex: 0 0 auto; }
.dir-list button:active, .dir-list button.pressed { background: var(--panel2); }
.dir-list button:last-child { border-bottom: none; }
.dir-list button.up { color: var(--dim); }
.dir-list button.up .ic { color: var(--dim2); }

.field { display: block; margin-bottom: 14px; }
.field span { display: block; color: var(--dim); font-size: 13px; margin-bottom: 6px; }
.field input {
  width: 100%; background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 11px 12px; font-size: 15px;
  transition: border-color var(--t-fast);
}
.field input:focus { outline: none; border-color: var(--accent); }
.check { display: flex; gap: 10px; align-items: center; padding: 8px 0; font-size: 14px; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); flex: 0 0 auto; }
.check code { color: var(--accent2); font-size: 12px; }

/* ---- token gate ---- */
.center-card { margin: auto; padding: 24px; max-width: 340px; text-align: center; }
.token-ico {
  width: 60px; height: 60px; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent2);
  border-radius: 50%;
}
.center-card h1 { font-size: 20px; margin-bottom: 10px; }
.center-card p { color: var(--dim); font-size: 14px; margin-bottom: 16px; }
.center-card input {
  width: 100%; background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 12px; font-size: 15px; margin-bottom: 12px; text-align: center;
}
.center-card input:focus { outline: none; border-color: var(--accent); }

/* ---- terminal ---- */
#view-term { background: #000; animation: none; }
.term-header { padding: 6px 8px; gap: 6px; background: rgba(22, 27, 34, .96); }
/* touch-action none: the browser must never start a native pan on the xterm
   viewport — once it does, touch events turn non-cancelable and the
   preventDefault that suppresses tap->mousedown->focus silently fails
   (keyboard pops up). Swipe scrolling is synthesized in JS anyway. */
#term-wrap { position: relative; flex: 1 1 auto; min-height: 0; }
#terminal { height: 100%; padding: 2px 0 0 4px; touch-action: none; overflow: hidden; }
#terminal .xterm { height: 100%; }

/* ---- copy mode ----
   The overlay needs everything #terminal forbids — native pan, long-press
   selection, context menu — so it sits NEXT TO the terminal, not inside it:
   the terminal's touch guards never see its events and it sends nothing. */
#copy-overlay {
  position: absolute; inset: 0; z-index: 10;
  display: flex; flex-direction: column;
  background: #000;
}
.copybar {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 8px; flex: 0 0 auto;
  background: var(--panel); border-bottom: 1px solid var(--border-soft);
  -webkit-user-select: none; user-select: none;
}
.copybar span { flex: 1; font-size: 12px; color: var(--dim); }
.copybar button {
  display: flex; align-items: center; justify-content: center;
  min-width: 36px; height: 34px; padding: 0 10px; flex: 0 0 auto;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-sm);
  font-size: 12.5px; font-weight: 600; cursor: pointer;
  transition: background var(--t-fast), transform var(--t-fast);
}
.copybar button .ic { width: 15px; height: 15px; }
.copybar button.pressed, .copybar button:active { background: var(--panel3); transform: scale(.94); }
#copy-text {
  flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain;
  padding: 4px 8px 20px;
  font-family: "SF Mono", Menlo, Consolas, monospace; line-height: 1.4;
  white-space: pre-wrap; word-break: break-all;
  color: var(--text);
  -webkit-user-select: text; user-select: text;
}
#btn-copy.on { color: var(--accent2); border-color: rgba(217, 119, 87, .5); background: var(--accent-soft); }

.keybar {
  display: flex; gap: 5px; padding: 6px 8px;
  overflow-x: auto; background: var(--panel);
  border-top: 1px solid var(--border-soft); flex: 0 0 auto;
  scrollbar-width: none;
}
.keybar::-webkit-scrollbar { display: none; }
.keybar button {
  flex: 0 0 auto; min-width: 46px; height: 38px;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-sm);
  font-size: 13px; font-weight: 600; padding: 0 10px; cursor: pointer;
  transition: background var(--t-fast), transform var(--t-fast), border-color var(--t-fast);
}
.keybar button.pressed, .keybar button:active {
  background: var(--accent); border-color: var(--accent); color: #fff;
  transform: scale(.94);
}
.keybar .kb-enter { background: var(--accent-soft); border-color: rgba(217, 119, 87, .4); color: var(--accent2); }

/* ---- composer ---- */
.composer {
  display: flex; gap: 6px; align-items: flex-end;
  padding: 7px 8px calc(7px + var(--safe-bottom));
  background: var(--panel); border-top: 1px solid var(--border-soft);
  flex: 0 0 auto;
}
.composer-tools { display: flex; gap: 2px; align-items: flex-end; }
.composer-tools .icon-btn { min-width: 38px; height: 38px; padding: 0 8px; }

.input-wrap { position: relative; flex: 1; min-width: 0; }
.composer textarea {
  display: block; width: 100%; resize: none; max-height: 40vh;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 14px;
  padding: 9px 40px 9px 13px; font-size: 15px; line-height: 1.4;
  transition: border-color var(--t-fast);
}
.composer textarea:focus { outline: none; border-color: rgba(217, 119, 87, .55); }
.composer textarea::placeholder { color: var(--dim2); }
.composer textarea { scrollbar-width: none; }
.composer textarea::-webkit-scrollbar { display: none; }

.mini-btn {
  position: absolute; right: 5px; top: 5px;
  display: flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  background: transparent; border: none; border-radius: 8px;
  color: var(--dim2); cursor: pointer;
  transition: color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.mini-btn .ic { width: 16px; height: 16px; }
.mini-btn.pressed, .mini-btn:active { color: var(--text); background: var(--panel3); transform: scale(.9); }

#composer-count {
  position: absolute; right: 10px; bottom: 7px;
  font-size: 11px; color: var(--dim2); pointer-events: none;
  font-variant-numeric: tabular-nums;
}

/* send / pull dual-mode button */
.icon-btn.send {
  position: relative; min-width: 42px; height: 42px;
  border-radius: 50%; border: none;
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 10px rgba(217, 119, 87, .35);
}
.icon-btn.send .ic { position: absolute; inset: 0; margin: auto; transition: opacity var(--t-fast), transform 160ms ease; }
.icon-btn.send .ic-pull, .icon-btn.send .spinner { opacity: 0; }
.icon-btn.send[data-mode="idle"] { background: var(--panel3); color: var(--dim2); box-shadow: none; }
.icon-btn.send[data-mode="pull"] { background: var(--panel3); color: var(--accent2); box-shadow: none; border: 1px solid rgba(217, 119, 87, .5); }
.icon-btn.send[data-mode="pull"] .ic-send { opacity: 0; transform: rotate(90deg) scale(.6); }
.icon-btn.send[data-mode="pull"] .ic-pull { opacity: 1; }
.icon-btn.send[data-mode="busy"] .ic-send,
.icon-btn.send[data-mode="busy"] .ic-pull { opacity: 0; }
.icon-btn.send .spinner {
  position: absolute; inset: 0; margin: auto;
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .25); border-top-color: currentColor;
  transition: opacity var(--t-fast);
}
.icon-btn.send[data-mode="busy"] { background: var(--panel3); color: var(--accent2); }
.icon-btn.send[data-mode="busy"] .spinner { opacity: 1; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.icon-btn.send.pressed, .icon-btn.send:active { transform: scale(.9); }

/* recording state */
.icon-btn.rec {
  background: var(--red) !important; border-color: var(--red); color: #fff !important;
  animation: rec-pulse 1.2s ease-in-out infinite;
}
@keyframes rec-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(248, 81, 73, .45); }
  50% { box-shadow: 0 0 0 8px rgba(248, 81, 73, 0); }
}

@keyframes stt-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }

/* ---- fullscreen composer (expanded editing) ----
   pure layout swap: same textarea, same focus, keyboard stays open */
#view-term.expanded #term-wrap,
#view-term.expanded .keybar { display: none; }
#view-term.expanded .composer { flex: 1 1 auto; align-items: stretch; padding-top: 10px; }
#view-term.expanded .composer-tools { flex-direction: column; justify-content: flex-end; gap: 6px; }
#view-term.expanded .input-wrap { display: flex; }
#view-term.expanded .composer textarea {
  flex: 1; height: 100%; max-height: none;
  border-radius: var(--r-md); font-size: 16px; line-height: 1.5;
  padding-bottom: 26px;
}
#view-term.expanded #btn-send { align-self: flex-end; }
#view-term.expanded #composer-count { display: block !important; }

#conn {
  position: absolute; top: 58px; left: 50%; transform: translateX(-50%);
  background: #3a2b12; color: var(--amber); border: 1px solid #6b4e1a;
  border-radius: 999px; padding: 5px 14px; font-size: 13px; z-index: 50;
  display: flex; align-items: center; gap: 7px;
  animation: stt-in 200ms ease-out;
}
#conn::before {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  border: 2px solid rgba(240, 180, 41, .3); border-top-color: var(--amber);
  animation: spin .8s linear infinite;
}

#toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  top: calc(var(--safe-top) + 62px);
  background: var(--panel3); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 10px 16px; font-size: 14px; z-index: 99;
  box-shadow: var(--shadow-2);
  max-width: 86vw;
  animation: toast-in 200ms cubic-bezier(.2, .9, .3, 1.2);
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, -10px) scale(.96); }
  to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}
#toast.ok { border-color: rgba(63, 185, 80, .5); }
#toast.err { border-color: rgba(248, 81, 73, .55); }

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