:root {
  --bg: #0d0a10;
  --panel: #16101a;
  --panel-2: #221626;
  --line: #3b223a;
  --text: #fff1f3;
  --muted: #b898ab;
  --rose: #f43f5e;
  --rose-light: #fb7185;
  --rose-dark: #be123c;
  --rose-glow: #f43f5e33;
  --green: #10b981;
  --red: #f43f5e;
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: radial-gradient(1200px 600px at 15% -10%, #311329 0%, var(--bg) 60%) fixed;
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans Bengali", sans-serif;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small-text { font-size: 13px; }
.error { color: var(--red); min-height: 1.2em; }
h1, h2, h3 { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; font-weight: 600; letter-spacing: .3px; }
h2 { font-size: 18px; margin: 0 0 12px; color: var(--rose-light); }

button {
  background: linear-gradient(135deg, var(--rose), var(--rose-dark));
  color: #fff;
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px var(--rose-glow);
}
button:hover { filter: brightness(1.1); transform: translateY(-1px); }
button:active { transform: translateY(0); }
button:disabled { opacity: .6; cursor: wait; }
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }
button.ghost:hover { background: var(--panel-2); }
button.danger { background: transparent; color: var(--red); border: 1px solid #6b1d2f; box-shadow: none; }
button.danger:hover { background: #380d17; }
button.small { padding: 6px 12px; font-size: 13px; }
input, select, textarea {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  margin-top: 6px;
  transition: border-color 0.2s ease;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--rose);
  border-color: transparent;
}

.card {
  background: linear-gradient(180deg, var(--panel), #120c15);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 10px 30px #00000088;
}

/* Login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: min(380px, 100%); text-align: center; display: grid; gap: 12px; }
.login-card h1 { margin: 0; font-size: 34px; color: var(--rose-light); }
.crest { font-size: 52px; filter: drop-shadow(0 4px 14px var(--rose-glow)); }

/* Layout */
.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: #0d0a10cc;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 20px; font-weight: 700; color: var(--rose-light); white-space: nowrap; display: flex; align-items: center; gap: 6px; }
nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.tab { background: transparent; color: var(--muted); padding: 8px 12px; white-space: nowrap; box-shadow: none; border-radius: 8px; }
.tab.active { color: var(--text); background: var(--panel-2); border: 1px solid var(--line); }
.page { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.split { display: grid; grid-template-columns: 320px 1fr; gap: 16px; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } .brand { display: none; } }

/* Status */
.status { display: flex; align-items: center; gap: 10px; font-weight: 600; margin-bottom: 10px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); box-shadow: 0 0 0 4px #ffffff10; }
.dot.on { background: var(--green); box-shadow: 0 0 0 4px #10b98133; }
.dot.warn { background: #f59e0b; box-shadow: 0 0 0 4px #f59e0b33; }
.dot.off { background: var(--red); box-shadow: 0 0 0 4px #f43f5e33; }
.qr { text-align: center; }
.qr img { width: 260px; max-width: 100%; background: #fff; border-radius: 12px; padding: 10px; }
.big { font-size: 30px; font-weight: 700; }
.bar { height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden; margin: 8px 0; border: 1px solid var(--line); }
.bar div { height: 100%; width: 0%; background: linear-gradient(90deg, var(--rose), var(--rose-light)); transition: width .3s; }
.usage { width: 100%; margin-top: 14px; border-collapse: collapse; font-size: 13px; }
.usage td { padding: 4px 0; }
.usage td:last-child { text-align: right; color: var(--muted); }

/* Switches & forms */
.switch { display: flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; margin: 10px 0; }
.switch input { width: auto; margin: 0; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin: 16px 0; }
legend { padding: 0 6px; color: var(--rose-light); font-size: 13px; font-weight: 600; }
.radio { display: flex; align-items: center; gap: 8px; margin: 6px 0; cursor: pointer; }
.radio input { width: auto; margin: 0; }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; }
.actions { display: flex; align-items: center; gap: 12px; margin-top: 14px; }

/* Chat */
.chat-card { display: flex; flex-direction: column; height: min(720px, calc(100vh - 120px)); }
.chat-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.chat-log { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding: 8px 0; }
.bubble { max-width: 78%; padding: 10px 14px; border-radius: 14px; word-break: break-word; font-size: 14.5px; }
.bubble.user { align-self: flex-end; background: linear-gradient(135deg, var(--rose-dark), #4a1324); color: var(--text); border-bottom-right-radius: 3px; }
.bubble.assistant { align-self: flex-start; background: var(--panel-2); border: 1px solid var(--line); border-bottom-left-radius: 3px; }
.bubble .meta { font-size: 11px; color: var(--muted); margin-top: 4px; }
.chat-form { display: flex; gap: 8px; margin-top: 8px; }
.chat-form input { margin: 0; flex: 1; }

/* Conversations list */
.list-card { max-height: min(720px, calc(100vh - 120px)); overflow-y: auto; }
.chat-item { padding: 10px 12px; border-radius: 8px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; border: 1px solid transparent; }
.chat-item:hover { background: var(--panel-2); }
.chat-item.active { background: var(--panel-2); border-color: var(--rose-dark); }
.chat-item .title { font-weight: 600; font-size: 14px; }
.chat-item .sub { font-size: 12px; color: var(--muted); }

/* Rules, Notes, Todos list */
.rules-list { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.rule-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  gap: 12px;
}
.rule-item.disabled { opacity: 0.55; }
.rule-meta { display: flex; align-items: center; gap: 8px; font-size: 12px; margin-bottom: 4px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 6px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-instant { background: #be123c33; color: var(--rose-light); border: 1px solid var(--rose-dark); }
.badge-ai { background: #3b82f633; color: #93c5fd; border: 1px solid #1d4ed8; }
.rule-content { font-size: 14px; word-break: break-word; }
.rule-triggers { font-weight: 600; color: var(--text); }
.rule-resp { color: var(--muted); margin-top: 2px; }
.rule-ctrls { display: flex; align-items: center; gap: 8px; }

code { background: var(--panel-2); padding: 2px 6px; border-radius: 4px; font-size: 12px; border: 1px solid var(--line); color: var(--rose-light); }