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

:root {
  --bg: #0b1218;
  --panel: #0f1722;
  --panel-2: #0c141d;
  --border: #1f2a36;
  --text: #e6edf3;
  --muted: #9aa9bc;
  --accent: #22c79a;
  --accent-2: #f6c358;
  --sidebar: rgba(12, 18, 26, 0.9);
  --glow: rgba(34, 199, 154, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 700px at 15% -15%, #103048 0%, transparent 60%),
    radial-gradient(900px 600px at 85% 5%, #1a3f34 0%, transparent 55%),
    linear-gradient(150deg, #0a1117 0%, #0b131b 40%, #0b1218 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(120deg, rgba(255, 255, 255, 0.06) 0%, transparent 35%),
    linear-gradient(0deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: auto, 80px 80px, 80px 80px;
  opacity: 0.2;
  pointer-events: none;
}

.layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
  padding: 16px;
}

.sidebar {
  background: var(--sidebar);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  padding: 18px 14px;
  gap: 20px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.6px;
}

.side-top {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.side-btn {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #243241;
  background: linear-gradient(135deg, #132030, #0f1b26);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.side-btn:hover {
  filter: brightness(1.08);
}

.side-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.side-title {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.side-item {
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  background: transparent;
  border: 1px solid transparent;
}

.side-item:hover {
  border-color: #243241;
  background: #0f1a25;
}

.side-item.active {
  background: #0f1f2a;
  border: 1px solid #243241;
  box-shadow: inset 0 0 0 1px rgba(34, 199, 154, 0.15);
}

.side-footer {
  margin-top: auto;
  font-size: 12px;
  color: var(--muted);
}

.main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: rgba(11, 17, 25, 0.78);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  background: rgba(11, 17, 25, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.top-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.title {
  font-size: 20px;
  font-weight: 700;
}

.pill {
  font-size: 12px;
  color: var(--muted);
  padding: 4px 10px;
  border: 1px solid #243241;
  border-radius: 999px;
  background: #0b141c;
}

.chat {
  flex: 1;
  overflow-y: auto;
  padding: 24px 22px 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
}

.msg {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  animation: rise 220ms ease-out;
}

.msg.user {
  justify-content: flex-end;
}

.msg.system {
  justify-content: center;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  background: linear-gradient(135deg, #1aa37b, #22c79a);
  color: #052016;
  box-shadow: 0 6px 18px rgba(34, 199, 154, 0.35);
}

.msg.user .avatar {
  background: linear-gradient(135deg, #3b4656, #2b3644);
  color: #e6edf3;
  box-shadow: none;
}

.bubble {
  max-width: min(760px, 92vw);
  padding: 12px 14px;
  border-radius: 14px;
  line-height: 1.55;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.bubble.plain {
  white-space: pre-wrap;
}

.bubble.markdown {
  white-space: normal;
}

.msg.user .bubble {
  background: linear-gradient(135deg, #101a2a, #0f1725);
  border-color: #263342;
}

.msg.system .bubble {
  background: transparent;
  border: 1px dashed #2b3b52;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.bubble.markdown h1,
.bubble.markdown h2,
.bubble.markdown h3 {
  margin: 0 0 10px;
}

.bubble.markdown p {
  margin: 0 0 10px;
}

.bubble.markdown p:last-child {
  margin-bottom: 0;
}

.bubble.markdown ul,
.bubble.markdown ol {
  margin: 8px 0 8px 20px;
  padding: 0;
}

.bubble.markdown li {
  margin: 4px 0;
}

.bubble.markdown a {
  color: #7dd3fc;
}

.bubble.markdown code {
  background: #0b131b;
  padding: 2px 4px;
  border-radius: 4px;
  border: 1px solid #1f2f3f;
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95em;
}

.bubble.markdown pre {
  background: #0b131b;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #1f2f3f;
  overflow-x: auto;
  margin: 10px 0;
}

.bubble.markdown pre code {
  background: transparent;
  border: 0;
  padding: 0;
}

.bubble.markdown blockquote {
  margin: 10px 0;
  padding: 6px 12px;
  border-left: 3px solid #2b3b52;
  background: #0c1520;
  color: var(--muted);
}

.composer {
  display: flex;
  gap: 10px;
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  background: rgba(12, 18, 26, 0.9);
}

input {
  flex: 1;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #243241;
  background: #0b131b;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 199, 154, 0.2);
}

button {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid #1a2a36;
  background: linear-gradient(135deg, var(--accent), #1aa37b);
  color: #052016;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.composer-hint {
  padding: 0 22px 18px;
  font-size: 12px;
  color: var(--muted);
}

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

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .sidebar {
    display: none;
  }
}

@media (max-width: 600px) {
  .topbar,
  .composer,
  .composer-hint,
  .chat {
    padding-left: 14px;
    padding-right: 14px;
  }

  button {
    padding: 12px 12px;
  }
}