:root {
  --pine: #1E3B34;
  --pine-2: #2A4D44;
  --pine-text: #DCE8E2;
  --fog: #EEF2EE;
  --paper: #FFFFFF;
  --ink: #1B2420;
  --muted: #5F6B66;
  --line: #D6DED9;
  --lagoon: #1B8A86;
  --lagoon-ink: #FFFFFF;
  --danger: #B23A48;
  --ok: #2E7D4F;
  --radius-tile: 10px;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Segoe UI Variable Display', 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --pine: #0E1B17;
    --pine-2: #1A2C26;
    --pine-text: #C9D8D1;
    --fog: #121A17;
    --paper: #1A2421;
    --ink: #E6ECE8;
    --muted: #9AA8A2;
    --line: #2C3833;
    --lagoon: #37A9A4;
    --lagoon-ink: #08201E;
    --danger: #E07A86;
    --ok: #6CC495;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--fog);
  color: var(--ink);
  font: 16px/1.5 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--lagoon); }
button, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--lagoon); outline-offset: 2px; }
[hidden] { display: none !important; }

.brand { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; margin: 0 0 0.5rem; font-size: 2rem; line-height: 1.1; }
.brand.small { font-size: 1.25rem; margin: 0; color: #fff; }
.hint { color: var(--muted); font-size: 0.875rem; }
.hint.pad { padding: 0 1rem; color: var(--pine-text); opacity: 0.8; }

/* ---------- Buttons and forms ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.55rem 1rem; border-radius: 8px; border: 1px solid var(--line);
  background: var(--paper); cursor: pointer; text-decoration: none; color: var(--ink); font-weight: 700;
}
.btn.primary { background: var(--lagoon); border-color: var(--lagoon); color: var(--lagoon-ink); }
.btn:disabled { opacity: 0.6; cursor: default; }
.link { background: none; border: 0; padding: 0; color: var(--lagoon); cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.icon-btn { background: none; border: 0; font-size: 1.25rem; line-height: 1; padding: 0.5rem; border-radius: 8px; cursor: pointer; color: inherit; }
.icon-btn:hover { background: color-mix(in srgb, var(--ink) 8%, transparent); }
label { display: flex; flex-direction: column; gap: 0.3rem; font-weight: 700; font-size: 0.9rem; }
input:not([type=checkbox]), textarea {
  border: 1px solid var(--line); border-radius: 8px; padding: 0.6rem 0.75rem; background: var(--paper); font-weight: 400; font-size: 1rem;
}
label.check { flex-direction: row; align-items: center; gap: 0.4rem; font-weight: 400; }
.stack { display: flex; flex-direction: column; gap: 1rem; }
.alert { padding: 0.75rem 1rem; border-radius: 8px; border-left: 4px solid var(--ok); background: color-mix(in srgb, var(--ok) 10%, var(--paper)); }
.alert.error { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, var(--paper)); }

/* ---------- Sign-in and account pages ---------- */
.auth-page { display: grid; place-items: center; min-height: 100%; padding: 1.5rem; }
.auth-card { width: min(28rem, 100%); background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 2rem; }
.auth-card .lead { color: var(--muted); margin-top: 0; }
.auth-card .back { margin: 0 0 1rem; }
.auth-card .sub { margin-top: 2rem; border-top: 1px solid var(--line); padding-top: 1rem; }
.auth-card .sub h2 { font-family: var(--font-display); font-size: 1.15rem; margin: 0 0 0.5rem; }
.steps { padding-left: 1.25rem; }
.steps li { margin-bottom: 0.75rem; }
.secret { display: block; margin: 0.5rem 0; padding: 0.6rem; background: var(--fog); border-radius: 8px; font-size: 1.05rem; letter-spacing: 0.08em; word-break: break-all; }
.problems li { margin-bottom: 0.5rem; }
.quiet-form { margin-top: 1rem; text-align: center; }

/* ---------- Chat layout ---------- */
.chat-page { overflow: hidden; }
.app {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 300px;
  height: 100dvh;
}
.panel-hidden .app { grid-template-columns: 250px minmax(0, 1fr) 0; }
.panel-hidden .panel { display: none; }

.sidebar {
  background: var(--pine); color: var(--pine-text);
  display: flex; flex-direction: column; min-height: 0;
  padding-top: env(safe-area-inset-top);
}
.side-top { display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 1rem 0.75rem; }
.room-list { flex: 1; overflow-y: auto; padding: 0.25rem 0.5rem; }
.room {
  display: flex; align-items: center; gap: 0.35rem;
  padding: 0.45rem 0.6rem; border-radius: 8px; color: var(--pine-text); text-decoration: none; font-weight: 700;
}
.room:hover { background: var(--pine-2); }
.room.on { background: var(--paper); color: var(--ink); }
.room .hash { opacity: 0.55; }
.room .rname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.room .lock { font-size: 0.7rem; font-weight: 400; opacity: 0.7; border: 1px solid currentColor; border-radius: 99px; padding: 0 0.4rem; }
.room .unread { width: 9px; height: 9px; border-radius: 50%; background: #F2B544; }
.side-bottom { border-top: 1px solid var(--pine-2); padding: 0.9rem 1rem calc(0.9rem + env(safe-area-inset-bottom)); font-size: 0.9rem; }
.me { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: #fff; margin-bottom: 0.5rem; }
.side-links { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
.side-links a, .side-links .link { color: var(--pine-text); }
.side-links form { display: inline; }

.chat { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--paper); }
.chat-head {
  display: flex; align-items: center; gap: 0.75rem;
  padding: calc(0.75rem + env(safe-area-inset-top)) 1.25rem 0.75rem;
  border-bottom: 1px solid var(--line);
}
.room-title { flex: 1; min-width: 0; }
.room-title h1 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: 1.6rem; line-height: 1.1; margin: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.room-title p { margin: 0.1rem 0 0; color: var(--muted); font-size: 0.875rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.people { display: flex; align-items: center; }
.people .avatar { margin-left: -6px; border: 2px solid var(--paper); }
.people .more { font-size: 0.8rem; color: var(--muted); margin-left: 0.3rem; }
.chat-flash { margin: 0.75rem 1.25rem 0; }

/* Avatars: people are square game tiles, AIs are round tokens. */
.avatar {
  --c: #5A6B73;
  flex: none; width: 38px; height: 38px; border-radius: var(--radius-tile);
  display: inline-grid; place-items: center;
  background: var(--c); color: #fff; font-weight: 700; font-size: 0.85rem; letter-spacing: 0.02em;
}
.avatar.ai { border-radius: 50%; box-shadow: inset 0 0 0 3px color-mix(in srgb, #fff 35%, transparent); }
.avatar.sm { width: 28px; height: 28px; font-size: 0.7rem; border-radius: 7px; }
.avatar.sm.ai { border-radius: 50%; }

.messages { flex: 1; overflow-y: auto; padding: 1rem 1.25rem 0.5rem; overscroll-behavior: contain; }
.older { display: block; margin: 0 auto 1rem; }
.day { display: flex; align-items: center; gap: 0.75rem; color: var(--muted); font-size: 0.8rem; font-weight: 700; margin: 1.25rem 0 0.5rem; }
.day::before, .day::after { content: ''; flex: 1; border-top: 1px solid var(--line); }

.msg { --c: #5A6B73; display: flex; gap: 0.75rem; padding: 0.35rem 0.5rem; border-radius: 10px; position: relative; }
.msg + .msg:not(.grouped) { margin-top: 0.4rem; }
.msg.grouped { padding-top: 0.05rem; }
.msg.grouped .avatar { visibility: hidden; height: 0; }
.msg:hover { background: color-mix(in srgb, var(--ink) 4%, transparent); }
.msg .body { min-width: 0; flex: 1; }
.msg header { display: flex; align-items: baseline; gap: 0.5rem; }
.msg .who { color: var(--c); font-weight: 700; }
.msg time { color: var(--muted); font-size: 0.78rem; }
.msg .text { overflow-wrap: anywhere; max-width: 72ch; }
.msg .text a { word-break: break-all; }
.mention { background: color-mix(in srgb, var(--lagoon) 15%, transparent); color: var(--ink); border-radius: 4px; padding: 0 0.2rem; font-weight: 700; }
.msg-pin {
  position: absolute; top: 0.3rem; right: 0.5rem;
  border: 1px solid var(--line); background: var(--paper); border-radius: 6px; font-size: 0.75rem; padding: 0.1rem 0.5rem;
  cursor: pointer; opacity: 0;
}
.msg:hover .msg-pin, .msg:focus-within .msg-pin { opacity: 1; }
@media (pointer: coarse) { .msg-pin { opacity: 0.7; } }

.msg.status-pending .text { color: var(--muted); font-style: italic; }
.msg.status-error .text { color: var(--danger); }
.msg.status-error { background: color-mix(in srgb, var(--danger) 7%, transparent); }
.thinking .dots { display: inline-flex; gap: 3px; margin-left: 4px; }
.thinking .dots i { width: 5px; height: 5px; border-radius: 50%; background: currentColor; animation: blink 1.2s infinite ease-in-out; }
.thinking .dots i:nth-child(2) { animation-delay: 0.2s; }
.thinking .dots i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.2; } 40% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .thinking .dots i { animation: none; opacity: 0.6; } }

.empty { text-align: center; padding: 3rem 1rem; color: var(--muted); }
.empty p { margin: 0.25rem 0; }

.composer {
  display: flex; gap: 0.5rem; align-items: flex-end;
  padding: 0.75rem 1.25rem calc(0.75rem + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
}
.composer textarea { flex: 1; resize: none; min-height: 2.75rem; max-height: 200px; line-height: 1.4; }
.composer .send { height: 2.75rem; }

/* ---------- Tasks and pins panel ---------- */
.panel { background: var(--fog); border-left: 1px solid var(--line); padding: calc(1rem + env(safe-area-inset-top)) 1rem 1rem; overflow-y: auto; }
.panel-head { display: flex; align-items: center; justify-content: space-between; }
.panel-head .icon-btn { display: none; }
.panel h2 { font-family: var(--font-display); font-size: 1.1rem; margin: 0 0 0.5rem; }
.panel h2:not(:first-child) { margin-top: 1.5rem; }
.tasks, .pins { list-style: none; margin: 0; padding: 0; }
.tasks li { display: flex; align-items: flex-start; gap: 0.25rem; padding: 0.35rem 0; border-bottom: 1px solid var(--line); }
.tasks li label { flex: 1; flex-direction: row; align-items: flex-start; gap: 0.5rem; font-weight: 400; font-size: 0.95rem; }
.tasks li label input { margin-top: 0.3rem; accent-color: var(--lagoon); }
.tasks li.done span { text-decoration: line-through; color: var(--muted); }
.tasks .x { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 0.8rem; padding: 0.2rem 0.35rem; border-radius: 6px; }
.tasks .x:hover { color: var(--danger); }
.add-task { display: flex; gap: 0.4rem; margin-top: 0.6rem; }
.add-task input { flex: 1; min-width: 0; padding: 0.45rem 0.6rem; font-size: 0.95rem; }
.pins li { background: var(--paper); border: 1px solid var(--line); border-left: 4px solid #F2B544; border-radius: 8px; padding: 0.6rem 0.75rem; margin-bottom: 0.5rem; font-size: 0.9rem; }
.pins li p { margin: 0 0 0.3rem; white-space: pre-wrap; overflow-wrap: anywhere; }
.pins li .link { font-size: 0.8rem; }

.scrim { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.4); z-index: 20; }
.only-mobile { display: none; }

.toast {
  position: fixed; left: 50%; bottom: calc(5.5rem + env(safe-area-inset-bottom)); transform: translate(-50%, 1rem);
  background: var(--ink); color: var(--paper); padding: 0.6rem 1rem; border-radius: 10px; font-size: 0.9rem;
  opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; z-index: 50; max-width: calc(100% - 2rem);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Narrower screens ---------- */
@media (max-width: 1099px) {
  .app, .panel-hidden .app { grid-template-columns: 250px minmax(0, 1fr); }
  .panel, .panel-hidden .panel {
    display: block; position: fixed; top: 0; right: 0; bottom: 0; width: min(320px, 88vw); z-index: 30;
    transform: translateX(100%); transition: transform 0.2s ease;
  }
  .panel.open { transform: none; }
  .panel-head .icon-btn { display: inline-block; }
}
@media (max-width: 720px) {
  .app, .panel-hidden .app { grid-template-columns: minmax(0, 1fr); }
  .sidebar {
    position: fixed; top: 0; left: 0; bottom: 0; width: min(280px, 85vw); z-index: 30;
    transform: translateX(-100%); transition: transform 0.2s ease;
  }
  .sidebar.open { transform: none; }
  .only-mobile { display: inline-block; }
  .chat-head { padding-left: 0.5rem; padding-right: 0.5rem; gap: 0.4rem; }
  .room-title h1 { font-size: 1.3rem; }
  .people { display: none; }
  .messages { padding: 0.75rem 0.5rem 0.5rem; }
  .composer { padding-left: 0.5rem; padding-right: 0.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .sidebar, .panel, .toast { transition: none; }
}

/* ---------- Admin ---------- */
.admin-page { padding: 1.5rem; }
.admin { max-width: 960px; margin: 0 auto; }
.admin-head .back { display: inline-block; margin-bottom: 0.75rem; }
.tabs { display: flex; gap: 0.5rem; margin: 0.5rem 0 1.25rem; border-bottom: 1px solid var(--line); }
.tabs a { padding: 0.5rem 0.75rem; text-decoration: none; color: var(--muted); font-weight: 700; border-bottom: 3px solid transparent; margin-bottom: -1px; }
.tabs a.on { color: var(--ink); border-color: var(--lagoon); }
.panel-block { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 1.25rem; margin-bottom: 1rem; }
.panel-block h2 { font-family: var(--font-display); font-size: 1.2rem; margin: 0 0 0.75rem; }
.muted-block { background: transparent; border-style: dashed; }
.list { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.list th { text-align: left; color: var(--muted); font-size: 0.8rem; padding: 0.4rem; border-bottom: 1px solid var(--line); }
.list td { padding: 0.55rem 0.4rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.list tr.inactive td { color: var(--muted); }
.list .actions { display: flex; flex-wrap: wrap; gap: 0.25rem 0.9rem; }
.list .actions form { display: inline; }
.dot { --c: #5A6B73; display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: var(--c); margin-right: 0.45rem; }
.inline-form { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; }
.inline-form .grow { flex: 1; min-width: 14rem; }
.access { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; align-items: center; margin-top: 1rem; padding-top: 0.75rem; border-top: 1px solid var(--line); }
.access .hint { width: 100%; margin: 0; }
@media (max-width: 720px) {
  .admin-page { padding: 1rem 0.75rem; }
  .list thead { display: none; }
  .list tr { display: block; border-bottom: 1px solid var(--line); padding: 0.5rem 0; }
  .list td { display: block; border: 0; padding: 0.15rem 0; }
}