:root {
  color-scheme: dark;
  --bg: #080b0b;
  --panel: #0d1110;
  --panel-2: #121715;
  --panel-3: #171d1a;
  --line: rgba(255, 255, 255, .085);
  --line-strong: rgba(255, 255, 255, .15);
  --text: #f3f6f2;
  --muted: #8e9993;
  --accent: #b7ff3c;
  --accent-strong: #91dc15;
  --accent-soft: rgba(183, 255, 60, .12);
  --danger: #ff6e67;
  --shadow: 0 30px 80px rgba(0, 0, 0, .38);
  --sidebar: 292px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f2f4ef;
  --panel: #ffffff;
  --panel-2: #f7f9f4;
  --panel-3: #edf1e8;
  --line: rgba(15, 25, 18, .1);
  --line-strong: rgba(15, 25, 18, .18);
  --text: #111712;
  --muted: #647068;
  --accent: #6fa800;
  --accent-strong: #5b8b00;
  --accent-soft: rgba(111, 168, 0, .11);
  --shadow: 0 30px 80px rgba(45, 55, 45, .15);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body { min-height: 100dvh; overflow: hidden; }
button, input, textarea { font: inherit; }
button { color: inherit; }
[hidden] { display: none !important; }

.login-view {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 45%, rgba(183, 255, 60, .08), transparent 27%),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px), var(--bg);
  background-size: auto, 44px 44px, 44px 44px, auto;
}
.login-orbit { position: absolute; width: 640px; height: 640px; border: 1px solid var(--line); border-radius: 50%; box-shadow: 0 0 0 92px rgba(255,255,255,.012), 0 0 0 184px rgba(255,255,255,.009); }
.login-card { position: relative; width: min(100%, 420px); padding: 42px; border: 1px solid var(--line); border-radius: 28px; background: color-mix(in srgb, var(--panel) 93%, transparent); box-shadow: var(--shadow); backdrop-filter: blur(20px); }
.brand-mark { width: 38px; height: 38px; border: 1px solid var(--accent); border-radius: 11px; display: grid; place-items: center; color: var(--accent); transform: rotate(45deg); box-shadow: inset 0 0 18px var(--accent-soft); }
.brand-mark span { font-weight: 900; transform: rotate(-45deg); }
.brand-mark.large { width: 58px; height: 58px; border-radius: 16px; margin-bottom: 32px; }
.brand-mark.large span { font-size: 24px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .18em; }
.login-card h1 { margin: 0; font-size: clamp(34px, 8vw, 48px); letter-spacing: -.055em; line-height: 1; }
.login-card h1 span { color: var(--accent); }
.login-copy { margin: 16px 0 32px; color: var(--muted); line-height: 1.6; }
.login-form label { display: block; margin-bottom: 9px; font-size: 13px; font-weight: 700; }
.password-row { display: flex; align-items: center; border: 1px solid var(--line-strong); background: var(--panel-2); border-radius: 14px; transition: border-color .2s, box-shadow .2s; }
.password-row:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.password-row input { flex: 1; min-width: 0; border: 0; outline: 0; padding: 14px 16px; color: var(--text); background: transparent; }
.primary-button { width: 100%; margin-top: 14px; padding: 14px 18px; border: 0; border-radius: 14px; background: var(--accent); color: #11180a; font-weight: 850; display: flex; justify-content: space-between; cursor: pointer; transition: transform .18s, background .18s; }
.primary-button:hover { background: var(--accent-strong); transform: translateY(-1px); }
.form-error { min-height: 18px; margin: 10px 0 0; color: var(--danger); font-size: 13px; }
.privacy-note { margin: 24px 0 0; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; text-align: center; }

.app-view { height: 100dvh; display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr); }
.sidebar { height: 100dvh; background: var(--panel); border-right: 1px solid var(--line); padding: 20px 14px 14px; display: flex; flex-direction: column; z-index: 20; }
.sidebar-head { display: flex; align-items: center; justify-content: space-between; padding: 0 8px 23px; }
.brand { display: flex; align-items: center; gap: 13px; color: var(--text); text-decoration: none; }
.brand strong { display: block; font-size: 15px; letter-spacing: .02em; }
.brand small { display: block; margin-top: 3px; color: var(--muted); font-size: 8px; letter-spacing: .17em; }
.icon-button { width: 38px; height: 38px; border: 0; border-radius: 11px; display: grid; place-items: center; background: transparent; color: var(--muted); cursor: pointer; }
.icon-button:hover { background: var(--panel-3); color: var(--text); }
.new-chat-button { width: 100%; padding: 13px 15px; border: 1px solid color-mix(in srgb, var(--accent) 48%, transparent); border-radius: 13px; background: var(--accent-soft); color: var(--accent); font-weight: 800; text-align: left; cursor: pointer; }
.new-chat-button span { margin-right: 8px; font-size: 18px; }
.conversation-label { display: flex; align-items: center; justify-content: space-between; margin: 27px 9px 10px; color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.conversation-label button { border: 0; background: none; color: var(--muted); font-size: 10px; cursor: pointer; }
.conversation-list { flex: 1; overflow-y: auto; overscroll-behavior: contain; }
.conversation-item { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 4px; border-radius: 11px; margin: 3px 0; padding: 2px 4px 2px 12px; }
.conversation-item.active { background: var(--panel-3); }
.conversation-open { min-width: 0; padding: 10px 0; border: 0; background: none; text-align: left; cursor: pointer; }
.conversation-open strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 650; }
.conversation-open small { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; }
.conversation-menu { opacity: 0; width: 30px; height: 30px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; }
.conversation-item:hover .conversation-menu, .conversation-menu:focus { opacity: 1; }
.sidebar-footer { border-top: 1px solid var(--line); padding: 14px 6px 0; }
.storage-status { display: flex; align-items: center; gap: 10px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.storage-status strong, .storage-status small { display: block; }
.storage-status strong { font-size: 11px; }
.storage-status small { margin-top: 3px; color: var(--muted); font-size: 9px; }
.public-access-note { margin: 13px 0 0; color: var(--muted); font-size: 9px; line-height: 1.5; }

.chat-shell { min-width: 0; height: 100dvh; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; background: var(--bg); }
.topbar { min-height: 74px; padding: 13px 24px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 14px; justify-content: space-between; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(18px); z-index: 5; }
.chat-title-wrap { min-width: 0; }
.chat-title-wrap h2 { max-width: min(42vw, 560px); margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.connection-state { display: inline-flex; align-items: center; gap: 5px; margin-top: 5px; color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }
.connection-state i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.model-picker { position: relative; }
.model-lock { display: flex; align-items: center; gap: 9px; padding: 8px 11px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel-2); cursor: pointer; text-align: left; }
.model-lock:hover, .model-lock[aria-expanded="true"] { border-color: var(--line-strong); background: var(--panel-3); }
.model-lock.cloud-active { border-color: rgba(108, 156, 255, .38); background: rgba(74, 111, 190, .1); }
.model-lock.think-active { border-color: rgba(188, 134, 255, .38); background: rgba(126, 76, 188, .1); }
.model-spark { color: var(--accent); }
.model-lock.cloud-active .model-spark { color: #8cb3ff; }
.model-lock.think-active .model-spark { color: #c797ff; }
.model-lock small, .model-lock strong { display: block; }
.model-lock small { color: var(--muted); font-size: 7px; letter-spacing: .12em; }
.model-lock strong { margin-top: 2px; font-size: 10px; }
.model-lock .lock { color: var(--muted); font-size: 10px; }
.model-menu { position: absolute; top: calc(100% + 8px); right: 0; z-index: 30; width: 245px; padding: 7px; border: 1px solid var(--line-strong); border-radius: 15px; background: var(--panel); box-shadow: var(--shadow); }
.model-menu button { width: 100%; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 10px; padding: 10px; border: 0; border-radius: 10px; background: transparent; text-align: left; cursor: pointer; }
.model-menu button:hover { background: var(--panel-3); }
.model-menu button.selected { background: var(--accent-soft); }
.model-menu button > span:nth-child(2) strong, .model-menu button > span:nth-child(2) small { display: block; }
.model-menu button > span:nth-child(2) strong { font-size: 11px; }
.model-menu button > span:nth-child(2) small { margin-top: 3px; color: var(--muted); font-size: 9px; }
.model-menu button i { color: var(--muted); font-size: 10px; font-style: normal; }
.model-menu button.selected i { color: var(--accent); }
.mode-icon { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font-size: 10px; font-weight: 900; }
.mode-icon.local { color: var(--accent); background: var(--accent-soft); }
.mode-icon.think { color: #c797ff; background: rgba(178, 117, 255, .12); }
.mode-icon.cloud { color: #8cb3ff; background: rgba(108, 156, 255, .12); }
.message-viewport { min-height: 0; overflow-y: auto; scroll-behavior: smooth; }
.welcome { min-height: 100%; width: min(820px, calc(100% - 40px)); margin: auto; padding: 80px 0 50px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.welcome-symbol { width: 72px; height: 72px; margin-bottom: 30px; border: 1px solid var(--accent); border-radius: 20px; display: grid; place-items: center; color: var(--accent); transform: rotate(45deg); background: var(--accent-soft); box-shadow: 0 0 60px var(--accent-soft); }
.welcome-symbol span { transform: rotate(-45deg); font-size: 28px; font-weight: 900; }
.welcome h1 { margin: 0; font-size: clamp(28px, 5vw, 46px); letter-spacing: -.045em; }
.welcome > p:not(.eyebrow) { max-width: 500px; margin: 16px 0 34px; color: var(--muted); line-height: 1.6; }
.suggestion-grid { width: 100%; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.suggestion-grid button { padding: 17px; border: 1px solid var(--line); border-radius: 15px; background: var(--panel); text-align: left; cursor: pointer; transition: border-color .18s, transform .18s, background .18s; }
.suggestion-grid button:hover { border-color: color-mix(in srgb, var(--accent) 50%, transparent); background: var(--panel-2); transform: translateY(-2px); }
.suggestion-grid span, .suggestion-grid strong, .suggestion-grid small { display: block; }
.suggestion-grid span { color: var(--accent); margin-bottom: 16px; }
.suggestion-grid strong { font-size: 12px; }
.suggestion-grid small { margin-top: 5px; color: var(--muted); font-size: 10px; }
.messages { width: min(860px, 100%); margin: 0 auto; padding: 34px 24px 42px; }
.message { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 13px; margin: 0 0 30px; }
.message.user { grid-template-columns: minmax(0, 1fr); justify-items: end; }
.message-avatar { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 900; font-size: 12px; }
.message-body { min-width: 0; max-width: 100%; }
.message-meta { margin-bottom: 8px; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.message-content { line-height: 1.72; font-size: 15px; overflow-wrap: anywhere; }
.message.user .message-content { max-width: min(620px, 90%); padding: 12px 16px; border: 1px solid var(--line); border-radius: 16px 16px 4px 16px; background: var(--panel-2); white-space: pre-wrap; }
.message-content p { margin: 0 0 14px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content h1, .message-content h2, .message-content h3 { margin: 24px 0 10px; line-height: 1.25; }
.message-content h1 { font-size: 24px; } .message-content h2 { font-size: 20px; } .message-content h3 { font-size: 17px; }
.message-content ul, .message-content ol { padding-left: 23px; }
.message-content a { color: var(--accent); }
.message-content blockquote { margin: 16px 0; padding: 2px 0 2px 16px; border-left: 2px solid var(--accent); color: var(--muted); }
.inline-code { padding: 2px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel-3); color: var(--accent); font-family: "Cascadia Code", Consolas, monospace; font-size: .9em; }
.code-block { margin: 17px 0; border: 1px solid var(--line); border-radius: 13px; overflow: hidden; background: #090c0b; }
.code-head { padding: 8px 12px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.08); color: #87918b; font-size: 10px; text-transform: uppercase; }
.copy-code { border: 0; background: none; color: #b9c2bd; cursor: pointer; font-size: 10px; }
.code-block pre { margin: 0; padding: 16px; overflow-x: auto; }
.code-block code { color: #d8e2dc; font-family: "Cascadia Code", Consolas, monospace; font-size: 13px; line-height: 1.65; }
.tok-comment { color: #6e7a73; } .tok-string { color: #c8e886; } .tok-number { color: #f0ab6d; } .tok-keyword { color: #8ac7ff; }
.typing { display: flex; gap: 5px; padding-top: 8px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 1s infinite ease-in-out; }
.typing i:nth-child(2) { animation-delay: .14s; }.typing i:nth-child(3) { animation-delay: .28s; }
@keyframes pulse { 0%, 70%, 100% { opacity: .25; transform: translateY(0); } 35% { opacity: 1; transform: translateY(-4px); } }
.composer-area { padding: 10px 24px max(14px, env(safe-area-inset-bottom)); background: linear-gradient(transparent, var(--bg) 18%); }
.composer { width: min(860px, 100%); margin: 0 auto; padding: 13px 13px 10px 17px; border: 1px solid var(--line-strong); border-radius: 18px; background: var(--panel); box-shadow: 0 12px 30px rgba(0,0,0,.12); }
.composer:focus-within { border-color: color-mix(in srgb, var(--accent) 55%, transparent); }
.composer textarea { width: 100%; max-height: 190px; resize: none; border: 0; outline: 0; background: transparent; color: var(--text); line-height: 1.55; }
.composer textarea::placeholder { color: var(--muted); }
.composer-bottom { display: flex; align-items: end; justify-content: space-between; gap: 12px; }
.composer-hint { color: var(--muted); font-size: 9px; }
.send-button { width: 36px; height: 36px; flex: 0 0 auto; border: 0; border-radius: 11px; background: var(--accent); color: #101709; font-size: 20px; font-weight: 900; cursor: pointer; }
.send-button:disabled { background: var(--panel-3); color: var(--muted); cursor: default; }
.disclaimer { margin: 8px 0 0; color: var(--muted); font-size: 9px; text-align: center; }
.toast { position: fixed; left: 50%; bottom: 22px; z-index: 50; transform: translate(-50%, 25px); padding: 11px 15px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel-3); box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: .2s; font-size: 12px; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.modal-backdrop { position: fixed; inset: 0; z-index: 60; padding: 20px; display: grid; place-items: center; background: rgba(3, 5, 4, .72); backdrop-filter: blur(10px); }
.cloud-modal { position: relative; width: min(100%, 430px); padding: 34px; border: 1px solid var(--line-strong); border-radius: 24px; background: var(--panel); box-shadow: var(--shadow); }
.modal-close { position: absolute; top: 13px; right: 13px; }
.cloud-symbol { width: 50px; height: 50px; margin-bottom: 25px; border: 1px solid rgba(108, 156, 255, .55); border-radius: 14px; display: grid; place-items: center; color: #8cb3ff; background: rgba(108, 156, 255, .1); font-weight: 900; box-shadow: 0 0 40px rgba(108, 156, 255, .1); }
.cloud-modal h2 { margin: 0; font-size: 26px; letter-spacing: -.035em; }
.cloud-modal > p:not(.eyebrow) { margin: 13px 0 25px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.cloud-modal form label { display: block; margin-bottom: 9px; font-size: 12px; font-weight: 750; }
.cloud-button { background: #8cb3ff; }
.cloud-button:hover { background: #73a2ff; }
.sidebar-backdrop, .mobile-only { display: none; }

@media (max-width: 760px) {
  .mobile-only { display: grid; }
  .app-view { display: block; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: min(86vw, 310px); transform: translateX(-102%); transition: transform .24s ease; box-shadow: var(--shadow); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop { display: block; position: fixed; inset: 0; z-index: 19; background: rgba(0,0,0,.55); opacity: 0; pointer-events: none; transition: opacity .2s; }
  .sidebar-backdrop.show { opacity: 1; pointer-events: auto; }
  .chat-title-wrap { flex: 1; }
  .chat-title-wrap h2 { max-width: 34vw; }
  .topbar { padding: 10px 13px; }
  .model-lock { padding: 7px 9px; }
  .model-lock div, .model-lock .lock { display: none; }
  .model-menu { right: -42px; }
  .welcome { width: calc(100% - 28px); padding: 48px 0 30px; justify-content: flex-start; }
  .welcome-symbol { width: 58px; height: 58px; border-radius: 16px; margin: 24px 0 26px; }
  .suggestion-grid { grid-template-columns: 1fr; }
  .suggestion-grid button { padding: 14px; display: grid; grid-template-columns: 28px 1fr; column-gap: 8px; }
  .suggestion-grid span { grid-row: span 2; margin: 0; }.suggestion-grid small { margin-top: 2px; }
  .messages { padding: 28px 15px 30px; }
  .message { grid-template-columns: 29px minmax(0, 1fr); gap: 10px; }
  .message-avatar { width: 29px; height: 29px; }
  .message.user .message-content { max-width: 95%; }
  .composer-area { padding-inline: 10px; }
  .composer-hint { display: none; }
  .login-card { padding: 30px 24px; }
  .cloud-modal { padding: 29px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}