:root {
  color-scheme: dark;
  --bg: #100d19;
  --sidebar: #15111f;
  --panel: #191424;
  --panel-soft: #211a30;
  --line: rgba(221, 202, 255, .10);
  --text: #f7f2ff;
  --muted: #a69ab8;
  --purple: #aa83ff;
  --purple-bright: #c5a8ff;
  --pink: #e0a6ff;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100dvh; background: var(--bg); color: var(--text); font-family: "DM Sans", sans-serif; overflow: hidden; }
button, textarea { font: inherit; }
button { color: inherit; }
.app-shell { height: 100dvh; display: grid; grid-template-columns: 258px minmax(0, 1fr); padding: 12px; gap: 12px; max-width: 1600px; margin: auto; }
.sidebar, .chat-panel { border: 1px solid var(--line); border-radius: 20px; background: rgba(25, 20, 36, .94); min-width: 0; }
.sidebar { background: var(--sidebar); padding: 22px 15px 14px; display: flex; flex-direction: column; }
.sidebar-top { display: flex; align-items: center; justify-content: space-between; padding: 0 7px 25px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font: 700 23px "Space Grotesk", sans-serif; letter-spacing: -1.2px; }
.brand-mark, .welcome-icon { display: grid; place-items: center; color: white; background: linear-gradient(145deg, #c7a6ff, #8154d5); box-shadow: 0 7px 24px #9b6aff45; }
.brand-mark { width: 34px; height: 34px; border-radius: 12px; font-size: 20px; }
.brand-ai { color: var(--purple-bright); }
.icon-button { width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line); background: #ffffff08; color: #c9bdd9; cursor: pointer; transition: .2s; }
.icon-button:hover { background: #aa83ff20; border-color: #aa83ff66; color: white; }
.sidebar-collapse { display: none; }
.new-chat { width: 100%; display: flex; align-items: center; gap: 10px; border: 1px solid #aa83ff55; border-radius: 12px; padding: 12px; background: linear-gradient(110deg, #aa83ff24, #aa83ff0b); color: #f0e6ff; font-weight: 600; cursor: pointer; text-align: left; }
.new-chat:hover { background: #aa83ff30; border-color: #bd9bff; }
.new-chat-icon { font-size: 21px; line-height: 1; }
.new-chat kbd { margin-left: auto; color: #9c8eae; font-size: 10px; border: 1px solid #ffffff18; border-radius: 5px; padding: 3px 5px; }
.sidebar-section { margin-top: 34px; }
.section-label, .eyebrow { color: #9484a8; font-size: 10px; letter-spacing: 1.7px; font-weight: 700; }
.section-label { margin: 0 8px 12px; }
.history-item { display: flex; align-items: center; gap: 10px; padding: 11px 10px; border-radius: 10px; color: #d7cce4; font-size: 13px; background: #aa83ff16; }
.history-icon { color: var(--purple-bright); font-size: 18px; }
.sidebar-bottom { margin-top: auto; }
.upgrade-card { display: flex; gap: 11px; align-items: center; border: 1px solid var(--line); border-radius: 13px; padding: 12px 10px; margin-bottom: 16px; background: linear-gradient(130deg, #aa83ff12, #e0a6ff08); }
.upgrade-sparkle { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; background: #aa83ff22; color: var(--purple-bright); font-size: 20px; }
.upgrade-card strong, .profile-copy strong { display: block; font-size: 12px; font-weight: 600; }
.upgrade-card small, .profile-copy small { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }
.profile-row { border-top: 1px solid var(--line); padding: 16px 4px 2px; display: flex; align-items: center; gap: 10px; }
.profile-avatar { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(145deg, #b58dff, #7650c4); font-weight: 700; }
.profile-copy { display: grid; gap: 2px; }
.online-dot, .status-dot { width: 7px; height: 7px; border-radius: 50%; background: #9fdfb5; box-shadow: 0 0 10px #9fdfb577; }
.online-dot { margin-left: auto; }
.chat-panel { display: flex; flex-direction: column; position: relative; overflow: hidden; background: radial-gradient(ellipse at 50% -25%, #6f45a51c, transparent 48%), #171321; }
.topbar { height: 66px; flex-shrink: 0; display: flex; align-items: center; justify-content: space-between; padding: 0 26px; border-bottom: 1px solid var(--line); }
.model-pill { display: inline-flex; align-items: center; gap: 9px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 30px; color: #e9dfff; font-size: 12px; background: #ffffff07; }
.model-tag { color: #c8aaff; background: #aa83ff1c; border-radius: 5px; padding: 4px 6px; font-size: 9px; letter-spacing: .8px; }
.status-dot { background: #b99aff; box-shadow: 0 0 9px #b99aff; }
.clear-button { font-size: 19px; }
.mobile-brand { display: none; }
.conversation { flex: 1; overflow-y: auto; padding: 34px 24px 20px; scroll-behavior: smooth; }
.welcome { max-width: 650px; margin: 5vh auto 20px; text-align: center; }
.welcome-icon { width: 58px; height: 58px; margin: 0 auto 22px; border-radius: 19px; font-size: 31px; }
.eyebrow { margin: 0 0 15px; }
h1 { margin: 0; font: 600 clamp(34px, 5vw, 52px)/1.12 "Space Grotesk", sans-serif; letter-spacing: -2.2px; }
h1 span { background: linear-gradient(90deg, #c8aaff, #edb9ff); color: transparent; background-clip: text; }
.welcome-copy { margin: 17px auto 0; max-width: 400px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.suggestions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 34px auto 0; max-width: 570px; }
.suggestion { display: flex; align-items: center; gap: 12px; min-width: 0; text-align: left; padding: 14px; border: 1px solid var(--line); border-radius: 13px; background: #ffffff06; cursor: pointer; transition: .2s; }
.suggestion:hover { transform: translateY(-2px); border-color: #aa83ff70; background: #aa83ff12; }
.suggestion-icon { width: 32px; height: 32px; flex: 0 0 32px; display: grid; place-items: center; border-radius: 10px; color: var(--purple-bright); background: #aa83ff1c; font-size: 16px; }
.suggestion strong, .suggestion small { display: block; }
.suggestion strong { color: #e9e0f2; font-size: 12px; font-weight: 600; }
.suggestion small { margin-top: 4px; color: #998da9; font-size: 10px; }
.suggestion-arrow { margin-left: auto; color: #9483a8; font-size: 14px; }
.messages { max-width: 790px; margin: 0 auto; display: flex; flex-direction: column; gap: 23px; }
.message { display: flex; gap: 12px; align-items: flex-start; animation: appear .22s ease; }
.message.user { flex-direction: row-reverse; }
.avatar { width: 31px; height: 31px; flex: 0 0 31px; display: grid; place-items: center; border-radius: 11px; background: #aa83ff22; color: #c9aaff; font-size: 14px; }
.user .avatar { background: #342746; color: #e5d5ff; }
.bubble { max-width: min(82%, 650px); padding: 13px 16px; border: 1px solid var(--line); border-radius: 4px 15px 15px 15px; background: #211a30; color: #eee8f5; font-size: 13px; line-height: 1.75; white-space: pre-wrap; overflow-wrap: anywhere; }
.user .bubble { border-radius: 15px 4px 15px 15px; background: linear-gradient(135deg, #6744a1, #49316f); border-color: #aa83ff55; color: white; }
.typing { display: flex; gap: 5px; padding: 6px 2px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: #c5a8ff; animation: bounce .8s infinite alternate; }
.typing i:nth-child(2) { animation-delay: .2s; }
.typing i:nth-child(3) { animation-delay: .4s; }
.composer-area { flex-shrink: 0; padding: 14px 22px 17px; background: linear-gradient(180deg, transparent, #171321 18%); }
.composer { max-width: 790px; margin: auto; display: flex; align-items: flex-end; gap: 10px; padding: 11px 12px 11px 17px; border: 1px solid #aa83ff55; border-radius: 18px; background: #211a30; box-shadow: 0 10px 40px #0003; transition: border-color .2s, box-shadow .2s; }
.composer:focus-within { border-color: #bd9bff; box-shadow: 0 0 0 3px #aa83ff18, 0 10px 40px #0003; }
textarea { flex: 1; min-width: 0; min-height: 27px; max-height: 130px; resize: none; background: transparent; border: 0; outline: 0; color: var(--text); font-size: 13px; line-height: 1.6; padding: 4px 0; }
textarea::placeholder { color: #8d819e; }
.send-button { width: 35px; height: 35px; flex: 0 0 35px; border: 0; border-radius: 11px; background: linear-gradient(145deg, #c5a8ff, #8658d6); color: white; font-size: 23px; cursor: pointer; box-shadow: 0 4px 15px #9c5be955; transition: .2s; }
.send-button:hover { transform: translateY(-2px); filter: brightness(1.1); }
.send-button:disabled { opacity: .45; cursor: default; transform: none; }
.disclaimer { margin: 10px 0 0; color: #81758e; text-align: center; font-size: 10px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@keyframes appear { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bounce { to { transform: translateY(-4px); opacity: .55; } }
@media (max-width: 760px) {
  body { overflow: hidden; }
  .app-shell { display: block; height: 100dvh; padding: 0; }
  .sidebar { display: none; }
  .chat-panel { height: 100dvh; border: 0; border-radius: 0; }
  .topbar { height: 58px; padding: 0 15px; }
  .mobile-brand { display: flex; align-items: center; gap: 8px; border: 0; background: none; color: #e8ddf7; font: 700 17px "Space Grotesk", sans-serif; }
  .mobile-brand .brand-mark { width: 28px; height: 28px; border-radius: 9px; font-size: 16px; }
  .model-pill { margin-left: auto; margin-right: 12px; padding: 7px 9px; font-size: 11px; }
  .conversation { padding: 22px 15px 15px; }
  .welcome { margin: 7vh auto 20px; }
  .welcome-icon { width: 52px; height: 52px; margin-bottom: 18px; }
  h1 { font-size: clamp(34px, 9vw, 43px); }
  .welcome-copy { font-size: 13px; }
  .suggestions { gap: 8px; margin-top: 27px; }
  .suggestion { padding: 11px 9px; gap: 8px; }
  .suggestion-icon { width: 29px; height: 29px; flex-basis: 29px; }
  .suggestion strong { font-size: 11px; }
  .suggestion small { font-size: 9px; }
  .suggestion-arrow { display: none; }
  .composer-area { padding: 10px 12px max(12px, env(safe-area-inset-bottom)); }
  .composer { border-radius: 16px; padding: 9px 10px 9px 14px; }
  .disclaimer { font-size: 9px; }
  .messages { gap: 17px; }
  .bubble { max-width: 86%; font-size: 13px; }
}
@media (max-width: 370px) {
  .suggestions { grid-template-columns: 1fr; }
  .welcome { margin-top: 3vh; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition: none !important; }
}
/* Collapsed desktop navigation */
@media (min-width:761px) {
  .app-shell:has(.sidebar.collapsed) { grid-template-columns: 76px minmax(0,1fr); }
  .sidebar.collapsed { padding-inline: 9px; }
  .sidebar.collapsed .brand > span:last-child, .sidebar.collapsed .new-chat > span:not(.plus), .sidebar.collapsed .new-chat kbd, .sidebar.collapsed .sidebar-nav, .sidebar.collapsed .history, .sidebar.collapsed .sidebar-note, .sidebar.collapsed .profile-text, .sidebar.collapsed .online-dot { display: none; }
  .sidebar.collapsed .sidebar-head { justify-content: center; padding-inline: 0; }
  .sidebar.collapsed .desktop-collapse { display: none; }
  .sidebar.collapsed .new-chat { justify-content: center; padding: 10px 0; }
  .sidebar.collapsed .plus { font-size: 22px; }
  .sidebar.collapsed .profile { justify-content: center; padding-inline: 0; }
}


/* MiniAI mobile navigation and reliable chat scrolling fix */
html, body { width: 100%; height: 100%; }
.app-shell { min-height: 0; }
.chat-panel { min-height: 0; }
.conversation { min-height: 0; flex: 1 1 auto; overflow-y: auto; overscroll-behavior-y: contain; -webkit-overflow-scrolling: touch; touch-action: pan-y; }
.sidebar-actions { display: flex; align-items: center; gap: 8px; }
.sidebar-collapse { display: inline-grid; place-items: center; }
.sidebar-close, .mobile-menu, .sidebar-scrim { display: none; }
@media (max-width: 760px) {
  body { overflow: hidden; }
  .app-shell { height: 100dvh; min-height: 0; }
  .chat-panel { height: 100dvh; min-height: 0; display: flex; flex-direction: column; }
  .topbar { gap: 8px; }
  .mobile-brand { flex: 0 0 auto; }
  .model-pill { margin-left: auto; margin-right: 0; }
  .mobile-menu { display: inline-grid; place-items: center; flex: 0 0 36px; font-size: 19px; }
  .clear-button { flex: 0 0 36px; }
  .conversation { min-height: 0; flex: 1 1 auto; overflow-y: scroll; padding-bottom: 24px; }
  .composer-area { flex: 0 0 auto; position: relative; z-index: 2; }
  .sidebar { display: flex; position: fixed; z-index: 1001; inset: 0 auto 0 0; width: min( min(86vw, 310px), 310px); height: 100dvh; border-radius: 0 20px 20px 0; border-left: 0; transform: translateX(-105%); transition: transform .25s ease; box-shadow: 18px 0 55px #0008; }
  .sidebar.open { transform: translateX(0); }
  .sidebar-close { display: inline-grid; place-items: center; font-size: 22px; }
  .sidebar-collapse { display: none; }
  .sidebar-scrim { display: block; position: fixed; z-index: 1000; inset: 0; width: 100%; height: 100%; border: 0; padding: 0; background: #080510a8; opacity: 0; visibility: hidden; transition: opacity .2s ease, visibility .2s ease; }
  .sidebar-scrim.visible { opacity: 1; visibility: visible; }
}
@media (prefers-reduced-motion: reduce) { .sidebar, .sidebar-scrim { transition: none !important; } }