/* ============================================
   EXPLAINABLES · CLASS 9 · DEEP SPACE
   Solar System — orbiting planets, nebula glow
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg9:       #020409;
  --surface9:  #060c18;
  --border9:   rgba(100,140,255,0.18);
  --text9:     #d8e4ff;
  --muted9:    #4a5a8a;
  --accent9:   #6488ff;   /* electric indigo */
  --accent9b:  #a066ff;   /* violet */
  --accent9c:  #00d4ff;   /* sky blue */
  --accent9d:  #ff6b9d;   /* pink star */
  --accent9e:  #ffd166;   /* warm gold */
  --font9:     'Space Grotesk', sans-serif;
  --mono9:     'Space Mono', monospace;
  --sb-w9:     265px;
  --tb-h9:     58px;
  --tr9:       cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light mode */
body.space-light {
  --bg9: #edf0ff;
  --surface9: #dde4ff;
  --border9: rgba(100,136,255,0.3);
  --text9: #0a1240;
  --muted9: #5060a0;
}
body.space-light .sidebar-9 { background: rgba(225,230,255,0.97) !important; }
body.space-light .sidebar-9 * { color: #0a1240 !important; }
body.space-light .sb-brand-main9 { color: #2244cc !important; }
body.space-light .sb-brand-sub9 { color: #5060a0 !important; }
body.space-light .new-chat-9 { background: rgba(50,80,200,0.1) !important; border-color: rgba(50,80,200,0.35) !important; color: #1a2ea8 !important; }
body.space-light .sb-btn-9 { background: rgba(50,80,200,0.06) !important; border-color: rgba(50,80,200,0.2) !important; color: #0a1240 !important; }
body.space-light .sb-btn-9:hover { background: rgba(50,80,200,0.14) !important; color: #0a1240 !important; }
body.space-light .upgrade-9 { background: rgba(100,80,0,0.1) !important; border-color: rgba(180,140,40,0.4) !important; color: #6a4800 !important; }
body.space-light .sb-search-9 input { background: rgba(50,80,200,0.05) !important; border-color: rgba(50,80,200,0.25) !important; color: #0a1240 !important; }
body.space-light .sb-search-9 input::placeholder { color: #5060a0 !important; }
body.space-light .hist-label-9, body.space-light .ch-title-9 { color: #0a1240 !important; }
body.space-light .ch-item-9:hover { background: rgba(50,80,200,0.08) !important; }
body.space-light .user-info-9 span, body.space-light .user-email-9 { color: #0a1240 !important; }
body.space-light .user-email-9 { color: #5060a0 !important; }
body.space-light .user-menu-9 { background: rgba(225,230,255,0.99) !important; }
body.space-light .user-menu-9 button { color: #0a1240 !important; }
body.space-light .topbar-9 { background: rgba(225,230,255,0.92) !important; border-bottom-color: rgba(50,80,200,0.25) !important; }
body.space-light .tb-main9 { color: #1a2ea8 !important; }
body.space-light .topbar-btn-9 { border-color: rgba(50,80,200,0.3) !important; color: #0a1240 !important; }
body.space-light .lib-label-9, body.space-light .lib-item-9 { color: #0a1240 !important; }
body.space-light .lib-link-9 { color: #1a2ea8 !important; }

/* ── CURSOR (COMET) ──────────────────────── */
html { cursor: none !important; }
* { cursor: inherit !important; }

.comet-head {
  position: fixed; width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle, #ffffff, var(--accent9));
  pointer-events: none; z-index: 9999;
  transform: translate(-50%,-50%);
  will-change: transform;
  contain: layout size style;
  box-shadow: 0 0 10px var(--accent9);
}
.comet-tail {
  position: fixed; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent9b);
  pointer-events: none; z-index: 9997;
  transform: translate(-50%,-50%);
  opacity: 0.55;
  will-change: transform;
  box-shadow: 0 0 16px var(--accent9b);
}
/* comet-head:active removed - conflicts with JS transform */

/* ── BACKGROUND CANVAS ───────────────────── */
#bgCanvas9 { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* ── MUTE ────────────────────────────────── */
.mute-btn-9 {
  position: fixed; top: 68px; right: 150px; z-index: 500;
  background: rgba(100,136,255,0.08); border: 1px solid var(--border9);
  border-radius: 8px; width: 36px; height: 36px;
  font-size: 16px; color: var(--accent9);
  transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s;
}
.mute-btn-9:hover { background: rgba(100,136,255,0.18); }

/* ── LAYOUT ──────────────────────────────── */
body {
  font-family: var(--font9);
  background: var(--bg9);
  color: var(--text9);
  height: 100vh; overflow: hidden; display: flex;
}

/* ── SIDEBAR ─────────────────────────────── */
.sidebar-9 {
  position: fixed; top: 0; bottom: 0;
  width: var(--sb-w9);
  background: rgba(2,4,9,0.92);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex; flex-direction: column;
  border-right: 1px solid var(--border9);
  transition: transform 0.4s var(--tr9);
}
.left-sb9 { left: 0; }
.right-sb9 { right: 0; border-right: none; border-left: 1px solid var(--border9); }

.sb-glow-line9 {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent9), var(--accent9b), transparent);
  opacity: 0.7;
  animation: glowPulse9 3s ease infinite;
}
.sb-glow-line9.right9 {
  background: linear-gradient(90deg, transparent, var(--accent9b), var(--accent9), transparent);
}
@keyframes glowPulse9 { 0%,100%{opacity:0.4;} 50%{opacity:1;} }

.sb-header9 {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
}
.sb-logo9 { display: flex; align-items: center; gap: 10px; }
.sb-logo-wrap9 { position: relative; width: 40px; height: 40px; }
.sb-logo-img9 { width: 40px; height: 40px; border-radius: 50%; filter: drop-shadow(0 0 10px var(--accent9)); }
.sb-planet-ring9 {
  position: absolute; inset: -5px; border-radius: 50%;
  border: 1.5px solid transparent;
  border-top-color: var(--accent9);
  border-bottom-color: var(--accent9b);
  animation: spin9 4s linear infinite;
}
@keyframes spin9 { to { transform: rotate(360deg); } }

.sb-brand-9 { display: flex; flex-direction: column; }
.sb-brand-main9 { font-family: var(--mono9); font-size: 12px; font-weight: 700; color: var(--accent9); letter-spacing: 1.5px; }
.sb-brand-sub9 { font-size: 10px; color: var(--muted9); }
.sb-toggle9 { background: none; border: none; color: var(--muted9); font-size: 16px; padding: 4px 8px; min-width: 44px; min-height: 44px; border-radius: 6px; transition: color 0.2s; }
.sb-toggle9:hover { color: var(--accent9); }

.new-chat-9 {
  margin: 4px 12px 12px; padding: 11px 16px;
  background: linear-gradient(135deg, rgba(100,136,255,0.15), rgba(160,102,255,0.1));
  border: 1px solid rgba(100,136,255,0.35);
  border-radius: 12px; color: var(--accent9);
  font-family: var(--font9); font-size: 14px; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
  transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s;
}
.new-chat-9:hover { background: rgba(100,136,255,0.25); border-color: var(--accent9); box-shadow: 0 0 20px rgba(100,136,255,0.2); }

.sb-search-9 { padding: 0 12px 10px; }
.sb-search-9 input {
  width: 100%; padding: 8px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border9); border-radius: 10px;
  color: var(--text9); font-family: var(--font9); font-size: 13px;
  outline: none; transition: border-color 0.3s;
}
.sb-search-9 input:focus { border-color: var(--accent9); }
.sb-search-9 input::placeholder { color: var(--muted9); }

.chat-history-9 { flex: 1; overflow-y: auto; padding: 0 8px; }
.chat-history-9::-webkit-scrollbar { width: 3px; }
.chat-history-9::-webkit-scrollbar-thumb { background: var(--border9); border-radius: 3px; }
.hist-label-9 { font-size: 10px; color: var(--muted9); font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; padding: 6px 6px 8px; }

.ch-item-9 {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 10px; margin-bottom: 3px;
  border-radius: 10px; cursor: pointer;
  border: 1px solid transparent;
}
.ch-item-9:hover { background: rgba(100,136,255,0.08); border-color: var(--border9); }
.ch-item-9.active { background: rgba(100,136,255,0.13); border-color: rgba(100,136,255,0.35); }
.ch-title-9 { font-size: 13px; color: var(--text9); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.ch-acts-9 { display: flex; gap: 4px; opacity: 0; transition: opacity 0.2s; }
.ch-item-9:hover .ch-acts-9 { opacity: 1; }
.ch-acts-9 button { background: none; border: none; color: var(--muted9); font-size: 12px; padding: 3px 5px; border-radius: 5px; }
.ch-acts-9 button:hover { color: var(--accent9); background: rgba(100,136,255,0.1); }

.sb-bottom-9 { padding: 10px 12px; border-top: 1px solid var(--border9); display: flex; flex-direction: column; gap: 6px; }
.sb-btn-9 {
  padding: 9px 14px; border-radius: 10px; font-family: var(--font9); font-size: 13px; font-weight: 600;
  border: 1px solid var(--border9); background: rgba(255,255,255,0.03);
  color: var(--text9); text-align: left; transition: transform 0.25s, opacity 0.25s, box-shadow 0.25s;
}
.sb-btn-9:hover { background: rgba(100,136,255,0.1); border-color: var(--accent9); color: var(--accent9); }
.upgrade-9 { background: linear-gradient(135deg, rgba(255,209,102,0.12), rgba(160,102,255,0.1)); border-color: rgba(255,209,102,0.35); color: var(--accent9e); }
.upgrade-9:hover { background: linear-gradient(135deg, rgba(255,209,102,0.25), rgba(160,102,255,0.2)); box-shadow: 0 0 20px rgba(255,209,102,0.2); color: var(--accent9e); }

.user-row-9 { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 10px; cursor: pointer; border: 1px solid transparent; }
.user-row-9:hover { background: rgba(100,136,255,0.08); border-color: var(--border9); }
.user-avatar-9 { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--accent9), var(--accent9b)); display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.user-info-9 { flex: 1; overflow: hidden; }
.user-info-9 span { display: block; font-size: 13px; font-weight: 600; }
.user-email-9 { font-size: 11px !important; font-weight: 400 !important; color: var(--muted9); }
.chevron-9 { color: var(--muted9); font-size: 14px; }
.user-menu-9 { background: var(--surface9); border: 1px solid var(--border9); border-radius: 10px; padding: 6px; display: flex; flex-direction: column; gap: 3px; }
.user-menu-9 button { background: none; border: none; color: var(--text9); padding: 8px 12px; border-radius: 8px; font-family: var(--font9); font-size: 13px; text-align: left; transition: background 0.2s; }
.user-menu-9 button:hover { background: rgba(100,136,255,0.1); }

/* ── COLLAPSED SIDEBAR BUTTONS ───────────── */
.col-btn-9 {
  position: fixed; top: 50%; transform: translateY(-50%);
  z-index: 190; width: 32px; height: 56px;
  background: rgba(100,136,255,0.12); border: 1px solid var(--border9);
  color: var(--accent9); font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s;
}
.col-left9 { left: 0; border-radius: 0 10px 10px 0; }
.col-right9 { right: 0; border-radius: 10px 0 0 10px; }
.col-btn-9:hover { background: rgba(100,136,255,0.25); }
.hidden { display: none !important; }

/* ── MAIN AREA ───────────────────────────── */
.main-9 {
  position: fixed;
  left: var(--sb-w9); right: var(--sb-w9);
  top: 0; bottom: 0;
  display: flex; flex-direction: column;
  z-index: 100;
  will-change: transform;
}

/* ── TOP BAR ─────────────────────────────── */
.topbar-9 {
  height: var(--tb-h9); flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border9);
  background: rgba(2,4,9,0.8); backdrop-filter: blur(8px);
}
.top-brand-9 { display: flex; flex-direction: column; }
.tb-main9 { font-family: var(--mono9); font-size: 14px; font-weight: 700; color: var(--accent9); }
.tb-sub9 { font-size: 11px; color: var(--muted9); }
.topbar-right9 { display: flex; align-items: center; gap: 8px; }
.q-counter-9 { display: flex; align-items: center; gap: 5px; background: rgba(100,136,255,0.08); border: 1px solid var(--border9); border-radius: 20px; padding: 4px 12px; }
.q-num-9 { font-family: var(--mono9); font-size: 15px; font-weight: 700; color: var(--accent9); }
.q-label-9 { font-size: 11px; color: var(--muted9); }
.topbar-btn-9 { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--border9); background: rgba(255,255,255,0.03); color: var(--text9); font-size: 16px; transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s; }
.topbar-btn-9:hover { background: rgba(100,136,255,0.12); border-color: var(--accent9); color: var(--accent9); }
.top-login-9 { padding: 7px 16px; background: linear-gradient(135deg, var(--accent9), var(--accent9b)); border: none; border-radius: 8px; color: #fff; font-family: var(--font9); font-size: 13px; font-weight: 600; transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s; }
.top-login-9:hover { opacity: 0.85; box-shadow: 0 4px 16px rgba(100,136,255,0.4); }

/* ── HOME SCREEN ─────────────────────────── */
.home-9 {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 40px; padding: 20px;
  overflow: hidden;
}
.home-logo-9 { display: flex; flex-direction: column; align-items: center; gap: 24px; }

/* Solar system animation */
.solar-system-home {
  position: relative;
  width: 240px; height: 240px;
  display: flex; align-items: center; justify-content: center;
}
.home-star-9 {
  position: absolute;
  width: 80px; height: 80px;
  display: flex; align-items: center; justify-content: center;
  z-index: 10;
}
.home-logo-img-9 { width: 80px; height: 80px; border-radius: 50%; filter: drop-shadow(0 0 20px var(--accent9)); }
.star-corona9 {
  position: absolute; inset: -8px; border-radius: 50%;
  border: 1.5px solid rgba(100,136,255,0.3);
  animation: coronaPulse9 3s ease infinite;
}
.star-corona9.c2 {
  inset: -16px; border-color: rgba(160,102,255,0.2);
  animation-duration: 4s; animation-direction: reverse;
}
@keyframes coronaPulse9 { 0%,100%{transform:scale(1);opacity:0.5;} 50%{transform:scale(1.08);opacity:1;} }

.planet-orbit9 {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px solid rgba(100,136,255,0.12);
  display: flex; align-items: flex-start; justify-content: center;
  animation: orbitSpin9 linear infinite;
}
.po1 { width: 110px; height: 110px; top: 50%; left: 50%; margin: -55px 0 0 -55px; animation-duration: 6s; }
.po2 { width: 150px; height: 150px; top: 50%; left: 50%; margin: -75px 0 0 -75px; animation-duration: 10s; }
.po3 { width: 194px; height: 194px; top: 50%; left: 50%; margin: -97px 0 0 -97px; animation-duration: 16s; }
.po4 { width: 238px; height: 238px; top: 50%; left: 50%; margin: -119px 0 0 -119px; animation-duration: 25s; }
@keyframes orbitSpin9 { to { transform: rotate(360deg); } }

.planet9 {
  width: 12px; height: 12px; border-radius: 50%;
  margin-top: -6px; position: relative;
  box-shadow: 0 0 8px currentColor;
}
.p-mercury { background: #b5b5b5; color: #b5b5b5; width: 8px; height: 8px; margin-top: -4px; }
.p-venus   { background: #e8c97d; color: #e8c97d; width: 10px; height: 10px; margin-top: -5px; }
.p-earth   { background: #4a9eff; color: #4a9eff; width: 13px; height: 13px; margin-top: -6px; }
.p-mars    { background: #ff6b4a; color: #ff6b4a; width: 10px; height: 10px; margin-top: -5px; }

.moon9 {
  position: absolute; width: 5px; height: 5px; border-radius: 50%;
  background: #ccc; top: -8px; left: 4px;
  box-shadow: 0 0 4px #ccc;
}

.home-text-9 { text-align: center; }
.home-subtitle-9 { font-size: 13px; color: var(--accent9); font-family: var(--mono9); letter-spacing: 2px; margin-bottom: 10px; opacity: 0.8; }
.home-greeting-9 { font-size: clamp(22px, 3.5vw, 34px); font-weight: 700; color: var(--text9); line-height: 1.25; transition: opacity 0.5s; }

.chips-9 { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 620px; }
.chip-9 {
  padding: 10px 18px; border-radius: 50px;
  background: rgba(100,136,255,0.07); border: 1px solid rgba(100,136,255,0.2);
  color: var(--text9); font-family: var(--font9); font-size: 13px; font-weight: 500;
  transition: transform 0.25s, opacity 0.25s, box-shadow 0.25s; white-space: nowrap;
}
.chip-9:hover { background: rgba(100,136,255,0.18); border-color: var(--accent9); color: var(--accent9); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(100,136,255,0.2); }

/* ── CHAT ────────────────────────────────── */
.chat-9 { flex: 1; overflow: hidden; position: relative; }
.chat-msgs-9 { position: relative; z-index: 1; height: 100%; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.chat-msgs-9::-webkit-scrollbar { width: 4px; }
.chat-msgs-9::-webkit-scrollbar-thumb { background: var(--border9); border-radius: 4px; }

.msg-9 { display: flex; gap: 12px; animation: msgIn9 0.4s var(--tr9) both; max-width: 78%; }
@keyframes msgIn9 { from { opacity:0; transform:translateY(14px); } }
.msg-9.user { align-self: flex-end; flex-direction: row-reverse; }
.msg-9.bot  { align-self: flex-start; }

.msg-av-9 {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent9), var(--accent9b));
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
}
.msg-9.user .msg-av-9 { background: linear-gradient(135deg, #3a3a5c, #2a2a4a); }

.msg-bubble-9 {
  padding: 12px 16px; border-radius: 16px;
  font-size: 14px; line-height: 1.65;
  max-width: 100%;
}
.msg-9.user .msg-bubble-9 {
  background: linear-gradient(135deg, rgba(100,136,255,0.22), rgba(160,102,255,0.15));
  border: 1px solid rgba(100,136,255,0.3);
  border-bottom-right-radius: 4px;
  color: var(--text9);
}
.msg-9.bot .msg-bubble-9 {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border9);
  border-bottom-left-radius: 4px;
  color: var(--text9);
}

.msg-acts-9 { display: flex; gap: 5px; margin-top: 6px; flex-wrap: wrap; }
.mab-9 { background: none; border: 1px solid transparent; border-radius: 8px; color: var(--muted9); font-size: 11px; padding: 3px 8px; transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s; }
.mab-9:hover { border-color: var(--border9); color: var(--accent9); background: rgba(100,136,255,0.08); }

/* ── THINKING ────────────────────────────── */
.thinking-9 {
  display: flex; gap: 12px; align-items: flex-start;
  animation: msgIn9 0.3s both;
  max-width: 78%;
}
.think-av-9 { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--accent9), var(--accent9b)); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.think-body-9 { background: rgba(255,255,255,0.04); border: 1px solid var(--border9); border-radius: 16px; border-bottom-left-radius: 4px; padding: 14px 16px; }
.think-dots-9 { display: flex; gap: 6px; margin-bottom: 8px; }
.think-dots-9 span { width: 7px; height: 7px; border-radius: 50%; background: var(--accent9); animation: bounce9 1.2s ease infinite; }
.think-dots-9 span:nth-child(2) { animation-delay: 0.2s; background: var(--accent9b); }
.think-dots-9 span:nth-child(3) { animation-delay: 0.4s; background: var(--accent9c); }
@keyframes bounce9 { 0%,80%,100%{transform:translateY(0);} 40%{transform:translateY(-7px);} }
.think-txt-9 { font-size: 13px; color: var(--muted9); font-family: var(--mono9); }
.think-tip-9 { font-size: 11px; color: var(--accent9e); margin-top: 5px; opacity: 0.8; }

/* YouTube cards */
.yt-card-9 {
  display: flex; gap: 10px; align-items: center;
  background: rgba(255,0,0,0.05); border: 1px solid rgba(255,80,80,0.2);
  border-radius: 10px; padding: 10px; margin-top: 8px;
  text-decoration: none; transition: transform 0.25s, opacity 0.25s, box-shadow 0.25s;
}
.yt-card-9:hover { background: rgba(255,0,0,0.1); border-color: rgba(255,80,80,0.4); }
.yt-thumb-9 { width: 80px; height: 52px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.yt-title-9 { font-size: 12px; font-weight: 600; color: var(--text9); display: block; margin-bottom: 4px; }
.yt-meta-9 { font-size: 11px; color: #ff6b6b; }

/* ── SCROLL BTN ──────────────────────────── */
.scroll-btn-9 {
  position: absolute; bottom: 12px; right: 16px; z-index: 50;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(100,136,255,0.18); border: 1px solid var(--border9);
  color: var(--accent9); font-size: 18px; line-height: 1;
  transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s;
}
.scroll-btn-9:hover { background: rgba(100,136,255,0.35); }

/* ── EXHAUSTED BANNER ────────────────────── */
.exhausted-9 {
  position: absolute; bottom: 90px; left: 50%; transform: translateX(-50%);
  z-index: 300;
}
.ex-inner-9 {
  background: rgba(6,12,24,0.95); border: 1px solid rgba(255,100,100,0.4);
  border-radius: 16px; padding: 16px 24px;
  display: flex; align-items: center; gap: 14px;
  backdrop-filter: blur(8px);
}
.ex-icon9 { font-size: 24px; }
.ex-inner-9 p { font-size: 13px; color: var(--text9); }
.ex-inner-9 strong { color: #ff8888; font-family: var(--mono9); }
.ex-inner-9 button { padding: 7px 16px; background: linear-gradient(135deg, var(--accent9e), #ffaa33); border: none; border-radius: 8px; color: #000; font-family: var(--font9); font-size: 13px; font-weight: 700; white-space: nowrap; transition: opacity 0.2s; }
.ex-inner-9 button:hover { opacity: 0.85; }

/* ── INPUT AREA ──────────────────────────── */
.input-area-9 {
  position: relative;
  z-index: 1;
  
  padding: 10px 20px 16px;
  background: rgba(2,4,9,0.85); backdrop-filter: blur(8px);
  border-top: 1px solid var(--border9);
}
.disclaimer-9 { font-size: 11px; color: var(--muted9); text-align: center; margin-bottom: 8px; }
.input-wrap-9 {
  display: flex; align-items: flex-end; gap: 8px;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--border9); border-radius: 16px;
  padding: 8px 10px;
  transition: border-color 0.3s;
}
.input-wrap-9:focus-within { border-color: var(--accent9); box-shadow: 0 0 24px rgba(100,136,255,0.15); }

.input-field-9 {
  flex: 1; min-height: 24px; max-height: 160px;
  overflow-y: auto; padding: 4px 6px;
  font-family: var(--font9); font-size: 14px; color: var(--text9);
  outline: none; line-height: 1.5;
}
.input-field-9:empty::before { content: attr(data-placeholder); color: var(--muted9); pointer-events: none; }

.input-btn-9 {
  width: 34px; height: 34px; border-radius: 8px; flex-shrink: 0;
  border: 1px solid var(--border9); background: rgba(255,255,255,0.03);
  color: var(--muted9); font-size: 16px; transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s;
}
.input-btn-9:hover { color: var(--accent9); border-color: var(--accent9); background: rgba(100,136,255,0.1); }

.send-btn-9 {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent9), var(--accent9b));
  border: none; color: #fff; display: flex; align-items: center; justify-content: center;
  transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s;
}
.send-btn-9:hover { transform: scale(1.08); box-shadow: 0 4px 20px rgba(100,136,255,0.5); }

/* ── LIBRARY ─────────────────────────────── */
.lib-9 { flex: 1; overflow-y: auto; padding: 8px; }
.lib-9::-webkit-scrollbar { width: 3px; }
.lib-9::-webkit-scrollbar-thumb { background: var(--border9); border-radius: 3px; }
.lib-section-9 { margin-bottom: 18px; }
.lib-label-9 { font-size: 10px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted9); padding: 4px 6px 8px; }
.lib-item-9 { padding: 9px 12px; border-radius: 9px; font-size: 13px; cursor: pointer; color: var(--text9); border: 1px solid transparent; }
.lib-item-9:hover { background: rgba(100,136,255,0.08); border-color: var(--border9); }
.lib-link-9 { display: block; padding: 7px 12px; font-size: 12px; color: var(--accent9); text-decoration: none; border-radius: 8px; transition: background 0.2s; }
.lib-link-9:hover { background: rgba(100,136,255,0.08); }

/* ── MODALS ──────────────────────────────── */
.modal-9 {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(12px);
  display: none; align-items: center; justify-content: center;
  padding: 20px;
}
.modal-9.open { display: flex; }
.modal-box-9 {
  background: rgba(6,12,24,0.98);
  border: 1px solid var(--border9); border-radius: 20px;
  padding: 32px; position: relative;
  width: 100%; max-width: 440px;
  animation: modalIn9 0.4s var(--tr9) both;
  box-shadow: 0 40px 80px rgba(0,0,0,0.7), 0 0 60px rgba(100,136,255,0.1);
}
@keyframes modalIn9 { from{opacity:0;transform:scale(0.9) translateY(20px);} }
.modal-close-9 { position: absolute; top: 14px; right: 16px; background: none; border: none; color: var(--muted9); font-size: 20px; width: 32px; height: 32px; border-radius: 8px; transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s; }
.modal-close-9:hover { color: var(--text9); background: rgba(255,255,255,0.08); }

/* Upgrade modal */
.upgrade-box-9 { max-width: 480px; text-align: center; }
.upgrade-planet9 { font-size: 52px; margin-bottom: 12px; animation: floatPlanet9 3s ease infinite; }
@keyframes floatPlanet9 { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-8px);} }
.upgrade-box-9 h2 { font-size: 26px; font-weight: 700; color: var(--text9); margin-bottom: 6px; }
.upgrade-tagline9 { font-size: 14px; color: var(--muted9); margin-bottom: 20px; }
.upgrade-price-9 { display: inline-flex; align-items: baseline; gap: 4px; background: linear-gradient(135deg, rgba(255,209,102,0.12), rgba(100,136,255,0.1)); border: 1px solid rgba(255,209,102,0.3); border-radius: 50px; padding: 10px 24px; margin-bottom: 24px; }
.price-amount9 { font-family: var(--mono9); font-size: 32px; font-weight: 700; color: var(--accent9e); }
.price-period9 { font-size: 14px; color: var(--muted9); }
.upgrade-features-9 { text-align: left; display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.uf-9 { display: flex; gap: 10px; align-items: center; font-size: 14px; padding: 10px 14px; background: rgba(100,136,255,0.06); border-radius: 10px; border: 1px solid var(--border9); }
.uf-9 span { font-size: 18px; flex-shrink: 0; }
.upgrade-cta-9 { width: 100%; padding: 15px; background: linear-gradient(135deg, var(--accent9e), #ffa500); border: none; border-radius: 12px; color: #000; font-family: var(--font9); font-size: 16px; font-weight: 700; transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s; margin-bottom: 12px; }
.upgrade-cta-9:hover { transform: scale(1.02); box-shadow: 0 8px 32px rgba(255,209,102,0.4); }
.upgrade-note-9 { font-size: 12px; color: var(--muted9); }

/* Auth modal */
.auth-box-9 { max-width: 400px; }
.auth-header-9 { text-align: center; margin-bottom: 24px; }
.auth-logo-img9 { width: 56px; height: 56px; border-radius: 50%; margin-bottom: 12px; filter: drop-shadow(0 0 12px var(--accent9)); }
.auth-header-9 h2 { font-size: 22px; font-weight: 700; color: var(--text9); margin-bottom: 4px; }
.auth-header-9 p { font-size: 13px; color: var(--muted9); }
.auth-input-9 { width: 100%; padding: 12px 16px; margin-bottom: 12px; background: rgba(255,255,255,0.04); border: 1px solid var(--border9); border-radius: 12px; color: var(--text9); font-family: var(--font9); font-size: 14px; outline: none; transition: border-color 0.3s; }
.auth-input-9:focus { border-color: var(--accent9); }
.auth-input-9::placeholder { color: var(--muted9); }
.auth-btn-9 { width: 100%; padding: 13px; background: linear-gradient(135deg, var(--accent9), var(--accent9b)); border: none; border-radius: 12px; color: #fff; font-family: var(--font9); font-size: 15px; font-weight: 700; transition: transform 0.3s, opacity 0.3s, box-shadow 0.3s; margin-bottom: 16px; }
.auth-btn-9:hover { opacity: 0.88; box-shadow: 0 6px 24px rgba(100,136,255,0.4); }
.auth-divider-9 { text-align: center; margin: 14px 0; position: relative; }
.auth-divider-9::before { content:''; position:absolute; top:50%; left:0; right:0; height:1px; background: var(--border9); }
.auth-divider-9 span { background: rgba(6,12,24,0.98); padding: 0 12px; color: var(--muted9); font-size: 12px; position: relative; }
.google-btn-9 { width: 100%; padding: 11px; background: rgba(255,255,255,0.05); border: 1px solid var(--border9); border-radius: 12px; color: var(--text9); font-family: var(--font9); font-size: 14px; display: flex; align-items: center; justify-content: center; gap: 10px; transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s; margin-bottom: 16px; }
.google-btn-9:hover { background: rgba(255,255,255,0.1); }
.auth-switch-9 { text-align: center; font-size: 13px; color: var(--muted9); }
.auth-switch-9 a { color: var(--accent9); text-decoration: none; font-weight: 600; }

/* Settings modal */
.settings-box-9 { max-width: 500px; }
.settings-title-9 { font-size: 20px; font-weight: 700; color: var(--text9); margin-bottom: 20px; }
.stabs-9 { display: flex; gap: 6px; margin-bottom: 20px; background: rgba(255,255,255,0.04); border-radius: 10px; padding: 4px; }
.stab-9 { flex: 1; padding: 8px; border-radius: 8px; border: none; background: none; color: var(--muted9); font-family: var(--font9); font-size: 13px; font-weight: 600; transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s; }
.stab-9.active { background: rgba(100,136,255,0.18); color: var(--accent9); }
.stab-9:hover:not(.active) { color: var(--text9); }
.settings-content-9 { display: flex; flex-direction: column; gap: 12px; }
.setting-row-9 { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; background: rgba(255,255,255,0.03); border: 1px solid var(--border9); border-radius: 12px; }
.setting-row-9 h4 { font-size: 14px; font-weight: 600; color: var(--text9); margin-bottom: 2px; }
.setting-row-9 p { font-size: 12px; color: var(--muted9); }
.toggle-9 { width: 44px; height: 24px; background: rgba(255,255,255,0.1); border-radius: 12px; position: relative; cursor: pointer; flex-shrink: 0; border: 1px solid var(--border9); }
.toggle-9::after { content:''; position:absolute; top:2px; left:2px; width:18px; height:18px; border-radius: 50%; background:#fff; transition: transform 0.3s; }
.toggle-9.on { background: var(--accent9); border-color: var(--accent9); box-shadow: 0 0 12px rgba(100,136,255,0.4); }
.toggle-9.on::after { transform: translateX(20px); }

/* ── BREAK REMINDER ──────────────────────── */
.break-9 {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(0,0,0,0.85); backdrop-filter: blur(16px);
  display: flex; align-items: center; justify-content: center;
}
.break-inner-9 {
  background: rgba(6,12,24,0.98); border: 1px solid var(--border9);
  border-radius: 24px; padding: 40px; text-align: center; max-width: 380px;
  animation: modalIn9 0.4s var(--tr9) both;
  box-shadow: 0 40px 80px rgba(0,0,0,0.7);
}
.break-planet9 { font-size: 56px; margin-bottom: 16px; animation: floatPlanet9 3s ease infinite; }
.break-inner-9 h3 { font-size: 22px; font-weight: 700; color: var(--text9); margin-bottom: 10px; }
.break-inner-9 p { font-size: 14px; color: var(--muted9); line-height: 1.6; margin-bottom: 24px; }
.break-inner-9 button { padding: 12px 28px; background: linear-gradient(135deg, var(--accent9), var(--accent9b)); border: none; border-radius: 12px; color: #fff; font-family: var(--font9); font-size: 15px; font-weight: 700; transition: opacity 0.2s; }
.break-inner-9 button:hover { opacity: 0.85; }

/* ── TOAST ───────────────────────────────── */
.toast-9 {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: rgba(6,12,24,0.98); border: 1px solid var(--border9);
  border-radius: 50px; padding: 10px 22px; font-size: 13px; color: var(--text9);
  z-index: 2000; transition: transform 0.4s var(--tr9);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 20px rgba(100,136,255,0.1);
  white-space: nowrap;
}
.toast-9.show { transform: translateX(-50%) translateY(0); }

/* ── RESPONSIVE ──────────────────────────── */
@media (max-width: 900px) {
  .sidebar-9 { transform: translateX(-100%); }
  .right-sb9 { transform: translateX(100%); }
  .main-9 { left: 0 !important; right: 0 !important; }
  .mute-btn-9 { right: 10px; }
}


/* ═══════════════════════════════════════════════════════
   FEATURES MODULE STYLES — sticky notes, flashcards etc
   ═══════════════════════════════════════════════════════ */
@keyframes stickyPanelIn {
  from { opacity:0; transform:scale(0.85) translateY(20px); }
  to   { opacity:1; transform:scale(1)    translateY(0);    }
}

/* Sticky note fold effect */
.sticky-note::before {
  content:'';position:absolute;top:0;right:0;width:0;height:0;
  border-style:solid;border-width:0 14px 14px 0;
  border-color:transparent rgba(0,0,0,0.25) transparent transparent;
}

/* Typing indicator */
.typing-indicator-feat {
  align-self:flex-start;
}

/* Streak badge animation */
#streakBadge:hover { transform:scale(1.08); }

/* Feature action buttons hover */
button[onclick*="shareAsImageCard"]:hover,
button[onclick*="generateFlashcard"]:hover,
button[onclick*="readAloud"]:hover {
  opacity:0.85;
  transform:translateY(-1px);
}

/* Scrollbar in deck modal */
#plannerList::-webkit-scrollbar { width:4px; }
#plannerList::-webkit-scrollbar-thumb { background:rgba(255,255,255,0.15);border-radius:2px; }

/* Voice lang options hover */
.vlang-opt:hover { background:rgba(255,255,255,0.06) !important; }

body.space-light .msg-bubble-9 { color: #0a1240 !important; background: rgba(50,80,200,0.07) !important; border-color: rgba(50,80,200,0.2) !important; }
body.space-light .msg-9.user .msg-bubble-9 { background: rgba(50,100,220,0.1) !important; }
body.space-light .msg-bubble-9 strong { color: #1a3399 !important; }
body.space-light .msg-bubble-9 em { color: #2244aa !important; }
body.space-light .main-9 { background: var(--bg9) !important; }
body.space-light #chatMessages9 { background: transparent !important; }
body.space-light #inputField9 { color: #0a1240 !important; }
body.space-light .mab-9 { color: #4466aa !important; }
body.space-light .thinking-9 { background: rgba(220,228,255,0.7) !important; color: #0a1240 !important; }

/* ═══ LIGHT MODE ADDITIONAL FIXES ═══ */
body.space-light .chat-input-area-9, body.space-light .input-area-9 {
  background: rgba(220,228,255,0.95) !important;
}
body.space-light [id="chatInput9"], body.space-light [class*="input-box-9"],
body.space-light [id="inputField9"] {
  color: #0a1240 !important;
  background: rgba(230,236,255,0.9) !important;
  border-color: rgba(50,80,200,0.3) !important;
}
body.space-light [id="inputField9"]:empty::before,
body.space-light [id="inputField9"][data-placeholder]:empty::before {
  color: #4060a0 !important;
}
body.space-light .disclaimer-9 { color: #2a3a80 !important; }
body.space-light .send-btn-9 { background: rgba(50,80,200,0.15) !important; border-color: rgba(50,80,200,0.4) !important; }
/* Modal/popup overlay text in light theme - force light theme panels to stay dark */
body.space-light [id$="Modal"] { color-scheme: dark; }

/* ═══ FOCUS MODE CURSOR FIX ═══ */
body.focus-mode * { cursor: auto !important; }


/* ═══════════════════════════════════════════════════════
   PERFORMANCE CRITICAL OVERRIDES  (perf-fix applied)
   GPU compositing, paint containment, rAF-ready cursors
═══════════════════════════════════════════════════════ */

/* Cursor: position via JS transform, not left/top */
.cursor-glow, .cursor-trail,
/* cursor position handled by JS transform only */

/* Canvas: isolated GPU layer, no repaints */
canvas {
  position: fixed;
  will-change: transform;
  contain: strict;
  transform: translateZ(0);
  image-rendering: pixelated;
}

/* Sidebars: transform-only animation */
.sidebar, .left-sidebar, .right-sidebar,
[class*="sidebar-8"], [class*="sidebar-9"], [class*="sidebar-10"],
[class*="sb-left"], [class*="sb-right"],
[class*="left-sb"], [class*="right-sb"] {
  will-change: transform;
  transform: translateZ(0);
  contain: layout style;
  /* Reduce blur cost */
  backdrop-filter: blur(4px) !important;
  -webkit-backdrop-filter: blur(4px) !important;
}

/* Modals: lightweight */
.modal-overlay, [class*="modal-8"],
[class*="modal-9"], [class*="modal-10"] {
  will-change: opacity;
  contain: layout style;
}

/* Topbar: GPU layer */
.top-bar, .topbar, [class*="topbar-"] {
  transform: translateZ(0);
  contain: layout style;
  /* Less expensive blur */
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
}

/* Input area */
.chat-input-area, [class*="input-area-"] {
  transform: translateZ(0);
  will-change: auto;
  /* Remove blur entirely from input area */
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

/* Glitter — contained to its own layer */
.glitter-container, [id="glitterContainer"] {
  contain: strict;
  overflow: hidden;
}
.glitter {
  will-change: transform, opacity;
  contain: layout size style;
}

/* Logo animation: use transform only, not filter */
.sb-logo-img, [class*="sb-logo-img"] {
  will-change: filter;
  contain: layout;
  animation-duration: 6s !important;
}

/* Home logo: snap animation */
.home-logo-img, [class*="home-logo"] {
  will-change: transform;
  contain: layout;
}

/* Chat messages: content containment */
.chat-messages, [class*="chat-msgs"],
[class*="msgs-"], [class*="-messages"] {
  contain: content;
  overflow-anchor: auto;
}

/* Buttons: fast GPU-composited hover */
button {
  transform: translateZ(0);
  -webkit-tap-highlight-color: transparent;
}

/* Scrollbars: thin and performant */
* {
  scrollbar-width: thin;
}

/* Reduce excessive animations */
.glitter { animation-duration: 3s; }

/* Aurora beams - transform only */
.aurora-beam {
  will-change: transform, opacity;
  contain: layout style;
}
.aurora-container {
  contain: strict;
  overflow: hidden;
}

/* Particles */
.particle {
  will-change: transform, opacity;
  contain: layout size style;
}

/* Utility */
.hidden {
  display: none !important;
  pointer-events: none !important;
}

/* ── Chat Background Canvas ── */
.chat-bg-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 1;
}


/* ── CHAT CANVAS BACKGROUND ─────────────────────────────── */
#chatCanvas9 { position:absolute; inset:0; z-index:0; pointer-events:none; }
.topbar-9       { position:relative; z-index:20; }
.home-9         { position:relative; z-index:2; }
.chat-9         { position:relative; z-index:2; }
.input-area-9   { position:relative; z-index:5; }
/* Message bubbles */
.msg-bubble-9 {
  background: rgba(2,4,22,0.88) !important;
  backdrop-filter: blur(8px);
}
.msg-9.user .msg-bubble-9 {
  background: rgba(60,80,200,0.22) !important;
  backdrop-filter: blur(8px);
}
/* Action buttons */
[class*="mab-9"] {
  background: rgba(2,4,22,0.82) !important;
  border: 1px solid rgba(80,120,255,0.35) !important;
  color: #aac0ff !important;
}

/* ── Settings-driven overrides ── */
body.reduce-motion *, body.reduce-motion *::before, body.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}
body.high-contrast { filter: contrast(1.25); }

/* ── No-anim: suppress typing animation on reload ── */
.msg-9.no-anim .msg-bubble-9,
.msg-9.no-anim .msg-bubble { animation: none !important; }

/* ── Bot action buttons ── */
.msg-acts-9 {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 0 4px;
  opacity: 1;
}
.msg-9.user .msg-acts-9 { opacity: 0; }
.msg-9.user:hover .msg-acts-9 { opacity: 1; }
.mab-9 {
  background: rgba(139,92,246,0.07);
  border: 1px solid rgba(139,92,246,0.22);
  color: rgba(237,233,254,0.85);
  padding: 4px 10px;
  font-size: 11px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.18s;
}
.mab-9:hover { background: rgba(139,92,246,0.18); border-color: #8b5cf6; }