@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=IBM+Plex+Mono:wght@400;600&display=swap");

:root {
  --bg: #f6f4ee;
  --bg-panel: #fffefb;
  --bg-soft: #f1ece1;
  --text: #1a2a29;
  --text-soft: #5d6b69;
  --line: #dfd8ca;
  --accent: #0f8c7a;
  --accent-strong: #0c695c;
  --danger: #c7352b;
  --shadow: 0 18px 45px rgba(28, 31, 21, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 0% 0%, #f2ece0 0%, var(--bg) 40%);
  min-height: 100vh;
}

.bg-orb {
  position: fixed;
  z-index: 0;
  filter: blur(60px);
  opacity: 0.55;
  pointer-events: none;
}

.bg-orb-a {
  width: 360px;
  height: 360px;
  background: #ffd089;
  top: -100px;
  left: -100px;
}

.bg-orb-b {
  width: 320px;
  height: 320px;
  background: #9adbcf;
  right: -80px;
  bottom: -100px;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1400px, 96vw);
  margin: 22px auto;
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 16px;
  min-height: calc(100vh - 44px);
  animation: in 260ms ease-out;
}

.rooms-panel,
.chat-panel {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--bg-panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.rooms-panel {
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(165deg, rgba(15, 140, 122, 0.09), transparent 34%),
    var(--bg-panel);
}

.panel-header,
.chat-header {
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(6px);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

h1 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

h2 {
  margin: 0;
  font-size: 1.15rem;
}

#chatMeta {
  margin: 4px 0 0;
  color: var(--text-soft);
  font-size: 0.86rem;
}

.rooms-list {
  padding: 10px;
  overflow-y: auto;
  display: grid;
  gap: 8px;
}

.room-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 11px;
  display: grid;
  gap: 5px;
  text-align: left;
  background: #fffdfa;
  cursor: pointer;
  transition: border-color 140ms ease, transform 140ms ease, background-color 140ms ease;
}

.room-item:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.room-item.active {
  border-color: var(--accent);
  background: #eef8f5;
}

.room-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.room-preview,
.room-time {
  color: var(--text-soft);
  font-size: 0.8rem;
}

.chat-panel {
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(180deg, rgba(154, 219, 207, 0.15), transparent 120px),
    var(--bg-panel);
}

.messages {
  padding: 18px;
  overflow-y: auto;
  flex: 1;
  display: grid;
  gap: 10px;
}

.msg-row {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 14px;
  padding: 11px 12px;
  animation: msg-in 180ms ease-out;
}

.msg-meta {
  font-size: 0.76rem;
  color: var(--text-soft);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.msg-body {
  margin-top: 6px;
  white-space: pre-wrap;
  line-height: 1.45;
}

.msg-attachment {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  display: inline-block;
  margin-top: 8px;
  color: var(--accent-strong);
  text-decoration: none;
}

.composer {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-soft);
}

textarea {
  width: 100%;
  resize: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 11px;
  font: inherit;
  min-height: 44px;
}

textarea:focus {
  outline: 2px solid rgba(15, 140, 122, 0.25);
  border-color: var(--accent);
}

button {
  font: inherit;
}

#sendBtn,
.ghost-btn {
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  transition: all 140ms ease;
}

#sendBtn {
  padding: 0 16px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

#sendBtn:hover:not(:disabled) {
  background: var(--accent-strong);
}

#sendBtn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.ghost-btn {
  padding: 6px 11px;
  border-color: var(--line);
  background: #fff;
}

.ghost-btn:hover {
  border-color: var(--accent);
}

.status-line {
  margin: 0;
  min-height: 24px;
  padding: 3px 15px 11px;
  font-size: 0.8rem;
  color: var(--text-soft);
  font-family: "IBM Plex Mono", monospace;
}

.status-line.error {
  color: var(--danger);
}

.muted {
  color: var(--text-soft);
  font-size: 0.9rem;
  padding: 14px;
}

@keyframes in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes msg-in {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 940px) {
  .app-shell {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .rooms-panel {
    max-height: 36vh;
  }
}