:root {
  --ink: #182117;
  --muted: #667062;
  --paper: #f4f0df;
  --panel: rgba(255, 253, 241, 0.92);
  --moss: #356c3b;
  --lime: #8dbb45;
  --gold: #d99a2b;
  --danger: #a83c32;
  --line: rgba(42, 58, 38, 0.17);
  --shadow: 0 18px 60px rgba(21, 33, 20, 0.18);
}

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, rgba(246, 200, 91, 0.33), transparent 26rem),
    radial-gradient(circle at 90% 80%, rgba(76, 131, 74, 0.28), transparent 30rem),
    #d9dfca;
}

.sky-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  background-image: linear-gradient(#35523a 1px, transparent 1px), linear-gradient(90deg, #35523a 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
}

.login-shell {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(440px, 100%);
  padding: clamp(28px, 6vw, 48px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 6px solid var(--gold);
  border-radius: 10px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.login-mark { margin-bottom: 28px; font: 900 1.8rem/1 Georgia, serif; letter-spacing: 0.09em; color: var(--ink); }
.login-mark span { color: var(--moss); }
.login-card h1 { margin: 7px 0 8px; font: 700 2.35rem/1.05 Georgia, serif; }
.login-card > p { margin: 0 0 28px; color: var(--muted); }
.chat-login-form { display: grid; gap: 9px; }
.chat-login-form label { margin-top: 7px; font-weight: 800; }
.chat-login-form input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
  font: inherit;
}
.chat-login-form input:focus { outline: 3px solid rgba(141, 187, 69, 0.28); border-color: var(--moss); }
.chat-login-form button { margin-top: 12px; padding: 14px; }
.login-error { min-height: 1.25rem; margin: 3px 0 0 !important; color: var(--danger) !important; font-weight: 700; }
.back-link { display: inline-block; margin-top: 20px; color: var(--moss); font-weight: 700; }
.header-button { padding: 8px 12px; color: #f4cb72; background: transparent; border: 1px solid rgba(244, 203, 114, 0.4); }

.chat-header {
  position: sticky;
  top: 0;
  z-index: 5;
  min-height: 74px;
  padding: 12px clamp(16px, 4vw, 54px);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  color: white;
  background: rgba(25, 45, 28, 0.96);
  border-bottom: 4px solid var(--gold);
}

.brand {
  color: white;
  text-decoration: none;
  font: 900 1.5rem/1 Georgia, serif;
  letter-spacing: 0.08em;
}
.brand span { color: #b9dc67; }
.room-title { display: flex; flex-direction: column; }
.room-title span { color: #b9c6b7; font-size: 0.82rem; }
.identity { display: flex; align-items: center; gap: 16px; }
.identity a { color: #f4cb72; }

.communication-shell {
  position: relative;
  width: min(1440px, calc(100% - 32px));
  margin: 28px auto;
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(320px, 0.8fr);
  gap: 22px;
}

.chat-panel, .audio-panel, .presence-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.chat-panel { min-height: calc(100vh - 130px); display: flex; flex-direction: column; }
.side-stack { display: grid; align-content: start; gap: 22px; }
.audio-panel, .presence-panel { padding: 20px; }
.panel-heading { padding: 22px 24px 16px; display: flex; align-items: center; justify-content: space-between; gap: 14px; border-bottom: 1px solid var(--line); }
.panel-heading.compact { padding: 0 0 14px; }
.panel-heading h1, .panel-heading h2 { margin: 3px 0 0; font-family: Georgia, serif; }
.eyebrow { color: var(--moss); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }

button {
  border: 0;
  border-radius: 5px;
  padding: 11px 15px;
  color: white;
  background: var(--moss);
  font-weight: 800;
  cursor: pointer;
}
button:hover:not(:disabled) { filter: brightness(1.08); transform: translateY(-1px); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
.secondary { background: #6b744d; }
.danger { background: var(--danger); }
.ghost-button { color: var(--moss); background: transparent; border: 1px solid var(--line); }

.messages { flex: 1; min-height: 420px; max-height: calc(100vh - 330px); overflow-y: auto; padding: 16px 24px; }
.message { display: grid; grid-template-columns: 42px 1fr auto; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line); animation: arrive 180ms ease-out; }
.avatar { width: 42px; height: 42px; display: grid; place-items: center; color: white; background: var(--moss); border-radius: 4px; font: 800 1rem Georgia, serif; }
.message-meta { display: flex; align-items: baseline; gap: 8px; }
.message-name { font-weight: 900; }
.role { padding: 2px 6px; color: #4d3510; background: #f0cf82; border-radius: 999px; font-size: 0.68rem; font-weight: 800; text-transform: uppercase; }
.message-time { color: var(--muted); font-size: 0.72rem; }
.message-body { margin-top: 5px; white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.42; }
.message.deleted .message-body { color: var(--muted); font-style: italic; }
.delete-message { align-self: center; padding: 7px 9px; background: transparent; color: var(--danger); }

.composer { margin: 0 20px 20px; border: 1px solid var(--line); background: white; border-radius: 7px; overflow: hidden; }
.composer textarea { width: 100%; resize: none; padding: 14px; border: 0; outline: 0; font: inherit; background: transparent; }
.composer-actions { padding: 9px 10px; display: flex; align-items: center; justify-content: flex-end; gap: 12px; border-top: 1px solid var(--line); }
.composer-actions span { color: var(--muted); font-size: 0.76rem; }

.audio-copy { color: var(--muted); line-height: 1.45; }
.audio-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.status-pill { padding: 5px 9px; color: #5f481a; background: #f0d48d; border-radius: 999px; font-size: 0.74rem; font-weight: 800; }
.audio-participants, .online-users { margin-top: 14px; display: grid; gap: 8px; }
.participant, .online-user { padding: 10px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px; background: rgba(65, 99, 61, 0.07); border-left: 4px solid transparent; border-radius: 3px; }
.participant.speaking { border-color: var(--lime); background: rgba(141, 187, 69, 0.16); }
.participant small, .online-user small { color: var(--muted); }
.participant-controls { display: flex; align-items: center; gap: 5px; }
.participant-controls button { padding: 6px 8px; font-size: 0.7rem; }
.volume { width: 72px; accent-color: var(--moss); }

.toast { position: fixed; right: 24px; bottom: 24px; z-index: 10; max-width: 360px; padding: 13px 16px; color: white; background: #263927; border-radius: 5px; box-shadow: var(--shadow); opacity: 0; transform: translateY(10px); pointer-events: none; transition: 160ms ease; }
.toast.visible { opacity: 1; transform: translateY(0); }

@keyframes arrive { from { opacity: 0; transform: translateY(5px); } }

@media (max-width: 900px) {
  .chat-header { grid-template-columns: 1fr auto; }
  .room-title { display: none; }
  .communication-shell { grid-template-columns: 1fr; }
  .chat-panel { min-height: 72vh; }
  .messages { max-height: 58vh; }
}

@media (max-width: 560px) {
  .chat-header { padding: 12px; }
  .identity { align-items: flex-end; flex-direction: column; gap: 3px; font-size: 0.78rem; }
  .communication-shell { width: calc(100% - 16px); margin: 10px auto; gap: 10px; }
  .panel-heading { padding: 16px 14px 12px; align-items: flex-start; }
  .messages { padding: 10px 14px; }
  .message { grid-template-columns: 34px 1fr; }
  .avatar { width: 34px; height: 34px; }
  .delete-message { grid-column: 2; justify-self: start; }
  .composer { margin: 0 10px 10px; }
}