:root {
  color-scheme: light;
  --page: #faf8f4;
  --sidebar: #f2eee8;
  --surface: #fffdf9;
  --surface-soft: #f4f0e9;
  --surface-hover: #ece6de;
  --surface-active: #e7ded3;
  --text: #2b2724;
  --muted: #746c64;
  --subtle: #968c82;
  --line: rgba(76, 61, 49, .11);
  --line-strong: rgba(76, 61, 49, .19);
  --accent: #735b86;
  --accent-strong: #604872;
  --accent-soft: rgba(115, 91, 134, .12);
  --glow: #dca45d;
  --glow-soft: rgba(220, 164, 93, .19);
  --success: #2f8066;
  --danger: #b6424e;
  --on-accent: #ffffff;
  --shadow: 0 20px 58px rgba(70, 53, 42, .15);
  --shadow-soft: 0 8px 28px rgba(70, 53, 42, .08);
  --sidebar-width: 280px;
}

* { box-sizing: border-box; }

html, body { width: 100%; height: 100%; }

body {
  margin: 0;
  overflow: hidden;
  color: var(--text);
  background: var(--page);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.hidden { display: none !important; }
.mobile-only { display: none !important; }
.modal-open { overflow: hidden; }

.auth-screen {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: grid;
  place-items: center;
  overflow-y: auto;
  padding: 38px 18px;
  background:
    radial-gradient(circle at 14% 12%, var(--glow-soft), transparent 30%),
    radial-gradient(circle at 88% 86%, var(--accent-soft), transparent 34%),
    linear-gradient(145deg, var(--page), color-mix(in srgb, var(--surface-soft) 68%, var(--page)));
}
.auth-screen::before, .auth-screen::after { position: fixed; z-index: 0; width: 240px; height: 240px; border-radius: 50%; content: ""; filter: blur(4px); pointer-events: none; }
.auth-screen::before { top: -120px; right: 14%; background: radial-gradient(circle, var(--glow-soft), transparent 70%); }
.auth-screen::after { bottom: -140px; left: 8%; background: radial-gradient(circle, var(--accent-soft), transparent 70%); }
.auth-card { position: relative; z-index: 1; width: min(430px, 100%); margin: auto; padding: 34px 36px 30px; border: 1px solid var(--line); border-radius: 28px; background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.auth-brand { display: grid; place-items: center; width: 54px; height: 54px; margin: 0 auto 20px; border: 1px solid rgba(255,255,255,.28); border-radius: 18px; color: #fff; background: linear-gradient(145deg, #625075 0%, #876b91 58%, #d5a15b 125%); font-size: 18px; font-weight: 750; letter-spacing: .04em; box-shadow: 0 14px 32px rgba(103,78,119,.24), 0 0 0 7px var(--accent-soft); }
.auth-heading { text-align: center; }
.auth-heading h1 { margin: 9px 0 9px; font-size: 30px; font-weight: 700; letter-spacing: -.04em; }
.auth-heading p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; margin: 27px 0 20px; padding: 4px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-soft); }
.auth-tab { min-height: 40px; border: 0; border-radius: 10px; color: var(--muted); background: transparent; cursor: pointer; font-size: 13px; font-weight: 650; transition: color .16s, background .16s, box-shadow .16s; }
.auth-tab:hover:not(:disabled) { color: var(--text); }
.auth-tab.active { color: var(--accent-strong); background: var(--surface); box-shadow: 0 3px 12px rgba(70,53,42,.08); }
.auth-tab:disabled { opacity: .45; cursor: not-allowed; }
.auth-form { display: grid; gap: 10px; }
.auth-bootstrap-fields { display: grid; gap: 10px; }
.auth-form label { margin-top: 3px; color: var(--text); font-size: 12px; font-weight: 600; }
.auth-form .field-input { min-height: 50px; border-radius: 13px; }
.field-hint { margin: -3px 0 3px; color: var(--subtle); font-size: 10px; }
.auth-submit { min-height: 50px; margin-top: 8px; border-radius: 13px; }
.totp-login-heading { margin-bottom: 4px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-soft); }
.totp-login-heading strong { display: block; font-size: 13px; }
.totp-login-heading p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.remember-device { display: flex; align-items: flex-start; gap: 10px; margin: 5px 0 0; padding: 12px 13px; border: 1px solid var(--line); border-radius: 12px; cursor: pointer; transition: border-color .16s, background .16s; }
.remember-device:hover { border-color: var(--line-strong); background: var(--surface-soft); }
.remember-device input { width: 16px; height: 16px; margin: 1px 0 0; accent-color: var(--accent); }
.remember-device span { display: grid; gap: 3px; }
.remember-device strong { font-size: 12px; }
.remember-device small { color: var(--muted); font-size: 10px; font-weight: 400; }
.auth-link-button { padding: 5px 0; border: 0; color: var(--muted); background: transparent; cursor: pointer; font-size: 11px; text-decoration: underline; text-underline-offset: 3px; }
.auth-link-button:hover { color: var(--text); }
.auth-error { margin: 0 0 14px; padding: 10px 12px; border: 1px solid color-mix(in srgb, var(--danger) 24%, transparent); border-radius: 11px; color: var(--danger); background: color-mix(in srgb, var(--danger) 7%, transparent); font-size: 12px; line-height: 1.5; }
.registration-status { margin: 17px 0 0; color: var(--accent); text-align: center; font-size: 11px; font-weight: 600; }
.registration-status.full { color: var(--danger); }
.auth-privacy { margin: 9px 0 0; color: var(--subtle); text-align: center; font-size: 10px; line-height: 1.55; }
body.auth-required .app-shell { visibility: hidden; }
.language-settings.auth-language-settings { position: fixed; z-index: 260; top: 13px; right: 20px; margin-left: 0; }
.auth-language-settings > .icon-button { border: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 88%, transparent); box-shadow: var(--shadow-soft); }
.auth-language-settings .language-popover { top: calc(100% + 9px); }

.app-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); height: 100dvh; }

.sidebar {
  position: relative;
  z-index: 30;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 12px;
  border-right: 1px solid var(--line);
  background:
    radial-gradient(circle at 0 0, var(--glow-soft), transparent 24%),
    var(--sidebar);
}

.sidebar-head { display: flex; align-items: center; justify-content: space-between; min-height: 54px; padding: 2px 3px 10px; }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark, .welcome-mark, .assistant-avatar {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  color: #fff;
  background: linear-gradient(145deg, #625075 0%, #876b91 60%, #d5a15b 130%);
  font-weight: 750;
  letter-spacing: .02em;
}
.brand-mark { width: 34px; height: 34px; border: 1px solid rgba(255,255,255,.25); border-radius: 11px; font-size: 12px; box-shadow: 0 7px 18px rgba(103,78,119,.20); }
.brand-copy { display: flex; min-width: 0; flex-direction: column; gap: 1px; }
.brand-name { overflow: hidden; font-size: 14px; font-weight: 700; letter-spacing: .02em; text-overflow: ellipsis; white-space: nowrap; }
.brand-tagline { color: var(--subtle); font-size: 9px; letter-spacing: .08em; }

.icon-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition: color .15s, background .15s, transform .15s;
}
.icon-button:hover { color: var(--accent-strong); background: var(--accent-soft); }
.icon-button:active { transform: scale(.96); }
.icon-button:disabled { opacity: .4; cursor: default; }
.sidebar-head > .icon-button { color: var(--accent-strong); background: var(--accent-soft); }
.sidebar-head > .icon-button:hover { color: var(--on-accent); background: var(--accent); }

.chat-search { position: relative; display: flex; align-items: center; margin: 3px 2px 10px; }
.chat-search > svg { position: absolute; left: 11px; width: 17px; height: 17px; color: var(--muted); pointer-events: none; }
.chat-search input {
  width: 100%;
  height: 40px;
  padding: 0 58px 0 36px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--text);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  outline: none;
}
.chat-search input:focus { border-color: var(--accent); background: var(--surface); box-shadow: 0 0 0 3px var(--accent-soft); }
.chat-search kbd { position: absolute; right: 9px; padding: 2px 5px; border: 1px solid var(--line); border-radius: 5px; color: var(--subtle); background: var(--surface); font: 10px/1.35 inherit; pointer-events: none; }

.conversation-list { flex: 1; min-height: 0; overflow-y: auto; padding: 0 2px 12px; scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.conversation-group + .conversation-group { margin-top: 15px; }
.conversation-group h2 { margin: 0; padding: 8px 10px 5px; color: var(--subtle); font-size: 10px; font-weight: 700; letter-spacing: .08em; }
.conversation-item { position: relative; display: flex; align-items: center; min-width: 0; border-radius: 10px; transition: background .15s; }
.conversation-item:hover, .conversation-item.active { background: var(--surface-hover); }
.conversation-item.active { background: var(--surface-active); }
.conversation-item.active::before { position: absolute; top: 9px; bottom: 9px; left: 2px; width: 3px; border-radius: 999px; background: linear-gradient(var(--accent), var(--glow)); content: ""; }
.conversation-open {
  min-width: 0;
  flex: 1;
  padding: 11px 40px 11px 12px;
  overflow: hidden;
  border: 0;
  color: var(--text);
  background: transparent;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
  font-size: 13px;
}
.conversation-more { position: absolute; right: 4px; width: 32px; height: 30px; padding: 0; border: 0; border-radius: 7px; color: var(--muted); background: transparent; opacity: 0; cursor: pointer; font-size: 11px; letter-spacing: -2px; }
.conversation-item:hover .conversation-more, .conversation-item.active .conversation-more, .conversation-more:focus-visible { opacity: 1; }
.conversation-more:hover { color: var(--text); background: var(--surface); }
.conversation-popover { position: absolute; z-index: 20; top: 36px; right: 3px; min-width: 128px; padding: 6px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); }
.conversation-popover button { width: 100%; padding: 8px 10px; border: 0; border-radius: 7px; background: transparent; text-align: left; cursor: pointer; font-size: 13px; }
.conversation-popover button:hover, .conversation-popover button:focus-visible { background: var(--surface-hover); }
.sidebar-empty { padding: 28px 12px; color: var(--subtle); text-align: center; font-size: 12px; }

.sidebar-footer { display: grid; gap: 4px; padding-top: 8px; border-top: 1px solid var(--line); }
.sidebar-action { display: flex; align-items: center; width: 100%; min-width: 0; min-height: 44px; gap: 10px; padding: 6px 9px; border: 0; border-radius: 10px; background: transparent; text-align: left; cursor: pointer; }
.sidebar-action:hover, .sidebar-action:focus-visible { background: var(--surface-hover); }
.sidebar-action > svg { flex: 0 0 auto; color: var(--muted); }
.notification-badge { display: inline-grid; min-width: 20px; height: 20px; margin-left: auto; padding: 0 6px; place-items: center; border-radius: 999px; color: var(--on-accent); background: var(--danger); font-size: 9px; font-weight: 750; line-height: 1; }
.user-avatar { display: grid; place-items: center; width: 32px; height: 32px; flex: 0 0 auto; border: 1px solid rgba(255,255,255,.25); border-radius: 11px; color: #fff; background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent) 64%, var(--glow))); font-size: 12px; font-weight: 700; }
.user-details { display: flex; min-width: 0; flex: 1; flex-direction: column; gap: 2px; }
.user-details strong { font-size: 13px; font-weight: 600; }
.user-details small { overflow: hidden; color: var(--subtle); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.chevron { width: 16px; height: 16px; color: var(--subtle); }
.service-line { display: flex; align-items: center; width: fit-content; gap: 7px; margin: 3px 5px 0; padding: 5px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--subtle); background: color-mix(in srgb, var(--surface) 58%, transparent); font-size: 10px; }
.service-dot { width: 7px; height: 7px; border-radius: 50%; background: #a0a0a0; }
.service-dot.online { background: var(--success); box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 13%, transparent); }
.service-dot.offline { background: #e5484d; box-shadow: 0 0 0 3px rgba(229,72,77,.10); }

.chat-main { display: flex; min-width: 0; height: 100dvh; flex-direction: column; background: var(--page); }
.topbar { position: relative; z-index: 10; display: grid; grid-template-columns: 1fr auto; align-items: center; min-height: 64px; padding: 9px 20px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--page) 88%, transparent); backdrop-filter: blur(16px); }
.chat-title-wrap { min-width: 0; }
.chat-title-wrap h1 { max-width: 520px; margin: 0; overflow: hidden; font-size: 16px; font-weight: 700; letter-spacing: -.015em; text-overflow: ellipsis; white-space: nowrap; }
.model-label { display: flex; align-items: center; width: fit-content; gap: 5px; margin-top: 4px; color: var(--subtle); font-size: 10px; }
.model-status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 12%, transparent); }
.topbar-actions { display: flex; align-items: center; gap: 4px; }
.language-settings { position: relative; margin-left: 4px; }
.settings-gear svg { width: 19px; height: 19px; }
.language-popover { position: absolute; z-index: 70; top: calc(100% + 9px); right: 0; display: grid; width: 178px; padding: 9px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow-soft); }
.language-popover strong { padding: 5px 8px 2px; font-size: 13px; }
.language-popover > span { padding: 2px 8px 7px; color: var(--subtle); font-size: 10px; }
.language-popover button { min-height: 36px; padding: 0 9px; border: 0; border-radius: 9px; color: var(--text); background: transparent; text-align: left; cursor: pointer; font: inherit; font-size: 12px; }
.language-popover button:hover, .language-popover button:focus-visible { outline: none; background: var(--surface-hover); }
.language-popover button[aria-checked="true"] { color: var(--accent-strong); background: var(--accent-soft); font-weight: 700; }
.reasoning-picker { position: relative; display: flex; align-items: center; margin-right: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.reasoning-button { display: inline-flex; min-width: 94px; height: 34px; align-items: center; justify-content: space-between; gap: 7px; padding: 0 9px 0 11px; border: 1px solid var(--line); border-radius: 10px; color: var(--muted); background: var(--surface); cursor: pointer; font-size: 10px; font-weight: 700; outline: none; }
.reasoning-button svg { width: 15px; height: 15px; transition: transform .16s; }
.reasoning-button[aria-expanded="true"] svg { transform: rotate(180deg); }
.reasoning-button:hover, .reasoning-button:focus-visible { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); color: var(--text); box-shadow: 0 0 0 3px var(--accent-soft); }
.reasoning-button:disabled { opacity: .5; cursor: not-allowed; }
.reasoning-menu { position: absolute; z-index: 75; top: calc(100% + 9px); right: 0; display: grid; width: min(340px, calc(100vw - 24px)); gap: 3px; padding: 7px; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); box-shadow: var(--shadow); }
.reasoning-option { display: grid; width: 100%; min-height: 56px; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 10px; padding: 9px 10px; border: 0; border-radius: 10px; color: var(--text); background: transparent; text-align: left; cursor: pointer; }
.reasoning-option:hover, .reasoning-option:focus-visible { outline: none; background: var(--surface-hover); }
.reasoning-option[aria-selected="true"] { color: var(--accent-strong); background: var(--accent-soft); }
.reasoning-option.locked { color: var(--muted); }
.reasoning-option-copy { display: grid; min-width: 0; gap: 3px; }
.reasoning-option-copy strong { font-size: 12px; }
.reasoning-option-copy small { color: var(--subtle); font-size: 10px; line-height: 1.35; }
.reasoning-lock { padding: 4px 7px; border-radius: 999px; color: var(--accent-strong); background: var(--accent-soft); font-size: 9px; font-weight: 700; white-space: nowrap; }
.text-button { padding: 7px 10px; border: 0; border-radius: 9px; color: var(--muted); background: transparent; cursor: pointer; font-size: 12px; transition: color .15s, background .15s; }
.text-button:hover, .text-button:focus-visible { color: var(--text); background: var(--surface-hover); }
.text-button:disabled { opacity: .35; cursor: default; }
.danger-text { color: var(--danger) !important; }

.chat-scroll { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; scroll-behavior: smooth; }
.empty-state { position: relative; display: flex; width: min(780px, calc(100% - 34px)); min-height: 100%; margin: 0 auto; padding: 76px 0 46px; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.empty-state::before { position: absolute; top: 50%; left: 50%; width: min(640px, 92vw); height: 360px; border-radius: 50%; background: radial-gradient(circle, var(--glow-soft), var(--accent-soft) 35%, transparent 72%); content: ""; filter: blur(34px); opacity: .42; pointer-events: none; transform: translate(-50%, -58%); }
.empty-state > * { position: relative; z-index: 1; }
.welcome-mark { width: 54px; height: 54px; border: 1px solid rgba(255,255,255,.28); border-radius: 18px; font-size: 17px; box-shadow: 0 14px 34px rgba(103,78,119,.24), 0 0 0 8px var(--accent-soft); }
.welcome-eyebrow { margin-top: 22px; color: var(--accent); font-size: 10px; font-weight: 750; letter-spacing: .15em; }
.empty-state h2 { margin: 8px 0 9px; font-size: clamp(27px, 4vw, 34px); font-weight: 720; letter-spacing: -.04em; }
.empty-state > p { max-width: 560px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.suggestion-grid { display: grid; width: min(700px, 100%); grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; margin-top: 34px; }
.suggestion { min-height: 90px; padding: 16px 17px; border: 1px solid var(--line); border-radius: 17px; color: var(--text); background: color-mix(in srgb, var(--surface) 92%, transparent); box-shadow: 0 5px 18px rgba(70,53,42,.045); text-align: left; cursor: pointer; font-size: 13px; font-weight: 650; transition: background .16s, border-color .16s, box-shadow .16s, transform .16s; }
.suggestion:hover, .suggestion:focus-visible { border-color: color-mix(in srgb, var(--accent) 42%, var(--line)); background: var(--surface); box-shadow: var(--shadow-soft); transform: translateY(-2px); }
.suggestion span { display: block; margin-top: 7px; color: var(--subtle); font-size: 11px; font-weight: 400; }

.message-list { width: 100%; }
.message-row { display: flex; width: min(800px, calc(100% - 34px)); margin: 0 auto; gap: 14px; padding: 19px 0; }
.user-row { justify-content: flex-end; padding-top: 22px; padding-bottom: 10px; }
.assistant-row { align-items: flex-start; }
.assistant-avatar { width: 30px; height: 30px; margin-top: 1px; border: 1px solid rgba(255,255,255,.22); border-radius: 10px; font-size: 10px; box-shadow: 0 5px 14px rgba(103,78,119,.16); }
.message-body { min-width: 0; max-width: calc(100% - 42px); }
.user-row .message-body { max-width: min(76%, 640px); padding: 11px 16px; border: 1px solid color-mix(in srgb, var(--accent) 13%, var(--line)); border-radius: 19px 19px 6px 19px; background: color-mix(in srgb, var(--accent-soft) 62%, var(--surface)); }
.assistant-row .message-body { flex: 1; }
.message-content { overflow-wrap: anywhere; color: var(--text); font-size: 15px; line-height: 1.76; }
.text-block { white-space: pre-wrap; }
.markdown-block > :first-child { margin-top: 0; }
.markdown-block > :last-child { margin-bottom: 0; }
.markdown-block p { margin: 0 0 12px; }
.markdown-block .message-heading { margin: 20px 0 8px; color: var(--text); font-size: 16px; line-height: 1.45; letter-spacing: -.01em; }
.markdown-block h3.message-heading { font-size: 18px; }
.markdown-block ul, .markdown-block ol { margin: 8px 0 14px; padding-left: 1.45em; }
.markdown-block li { margin: 4px 0; padding-left: .15em; }
.markdown-block blockquote { margin: 12px 0; padding: 7px 12px; border-left: 3px solid color-mix(in srgb, var(--accent) 52%, var(--line)); color: var(--muted); background: color-mix(in srgb, var(--accent-soft) 42%, transparent); border-radius: 0 8px 8px 0; }
.markdown-block strong { font-weight: 700; }
.markdown-block em { color: color-mix(in srgb, var(--text) 78%, var(--accent-strong)); }
.markdown-block a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.markdown-block .inline-code { padding: .12em .38em; border: 1px solid color-mix(in srgb, var(--line) 78%, transparent); border-radius: 5px; background: color-mix(in srgb, var(--surface-soft) 78%, var(--accent-soft)); font: .9em/1.5 "Cascadia Code", Consolas, monospace; }
.message-content pre { position: relative; margin: 14px 0; padding: 38px 16px 16px; overflow-x: auto; border: 1px solid rgba(255,255,255,.08); border-radius: 14px; color: #eee9e3; background: #211d24; box-shadow: inset 0 1px rgba(255,255,255,.04); font: 13px/1.65 "Cascadia Code", Consolas, monospace; }
.code-language { position: absolute; top: 8px; left: 13px; color: #a5a5a5; font: 10px/1.4 inherit; text-transform: uppercase; }
.message-mode-label { display: inline-flex; align-items: center; gap: 4px; margin: 0 0 7px; color: var(--accent-strong); font-size: 9px; font-weight: 700; letter-spacing: .05em; }
.image-gallery { display: grid; width: min(640px, 100%); gap: 10px; margin-top: 13px; }
.image-attachment { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--surface-soft); box-shadow: var(--shadow-soft); }
.image-frame { position: relative; display: grid; width: 100%; min-height: 220px; place-items: center; overflow: hidden; background: linear-gradient(120deg, var(--surface-soft) 25%, var(--surface-hover) 45%, var(--surface-soft) 65%); background-size: 220% 100%; animation: image-shimmer 1.6s linear infinite; }
.image-frame.loaded { min-height: 0; background: #eee9e2; animation: none; }
.image-frame.failed { min-height: 190px; padding: 28px; color: var(--danger); background: color-mix(in srgb, var(--danger) 5%, var(--surface)); animation: none; text-align: center; font-size: 12px; }
.generated-image { display: block; width: 100%; height: auto; max-height: 680px; object-fit: contain; opacity: 0; transition: opacity .2s ease; }
.image-frame.loaded .generated-image { opacity: 1; }
.image-load-label { position: absolute; color: var(--muted); font-size: 11px; }
.image-frame.loaded .image-load-label { display: none; }
.image-attachment-footer { display: flex; min-height: 46px; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 12px; border-top: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 92%, transparent); }
.image-dimensions { color: var(--subtle); font-size: 10px; }
.image-actions { display: flex; align-items: center; gap: 5px; }
.image-action { min-height: 28px; padding: 4px 9px; border: 0; border-radius: 8px; color: var(--muted); background: transparent; cursor: pointer; font-size: 10px; text-decoration: none; }
.image-action:hover, .image-action:focus-visible { color: var(--accent-strong); background: var(--accent-soft); }
.image-action[aria-disabled="true"] { opacity: .4; pointer-events: none; }
@keyframes image-shimmer { to { background-position-x: -220%; } }
.message-meta { display: flex; align-items: center; gap: 10px; min-height: 28px; margin-top: 4px; color: var(--subtle); font-size: 10px; opacity: 0; transition: opacity .15s; }
.assistant-row:hover .message-meta, .assistant-row:focus-within .message-meta { opacity: 1; }
.copy-button { min-height: 30px; padding: 4px 7px; border: 0; border-radius: 7px; color: var(--muted); background: transparent; cursor: pointer; font-size: 11px; }
.copy-button:hover, .copy-button:focus-visible { color: var(--accent-strong); background: var(--accent-soft); }
.error-row .message-body { padding: 11px 13px; border: 1px solid rgba(208,14,23,.20); border-radius: 12px; color: var(--danger); background: rgba(208,14,23,.05); }
.typing-bubble { display: flex; align-items: center; gap: 4px; height: 28px; }
.typing-bubble span { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: pulse 1.15s infinite ease-in-out; }
.typing-bubble span:nth-child(2) { animation-delay: .15s; }
.typing-bubble span:nth-child(3) { animation-delay: .3s; }
@keyframes pulse { 0%, 70%, 100% { opacity: .3; transform: translateY(0); } 35% { opacity: 1; transform: translateY(-3px); } }

.composer-area { position: relative; z-index: 8; flex: 0 0 auto; padding: 11px 20px 13px; background: linear-gradient(to top, var(--page) 78%, color-mix(in srgb, var(--page) 0%, transparent)); }
.composer, .inline-error, .disclaimer { width: min(800px, 100%); margin-left: auto; margin-right: auto; }
.composer { display: flex; align-items: center; gap: 10px; min-height: 64px; padding: 11px 10px 11px 17px; border: 1px solid var(--line-strong); border-radius: 25px; background: var(--surface); box-shadow: 0 8px 28px rgba(70, 53, 42, .09); transition: border-color .16s, box-shadow .16s; }
.composer:focus-within { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: 0 10px 34px rgba(70,53,42,.11), 0 0 0 3px var(--accent-soft); }
.composer textarea { min-width: 0; min-height: 26px; max-height: 180px; flex: 1; padding: 3px 0; resize: none; overflow-y: auto; border: 0; color: var(--text); background: transparent; outline: none; font-size: 15px; line-height: 1.5; }
.composer textarea::placeholder { color: var(--subtle); }
.composer-tools { display: flex; align-self: flex-end; align-items: center; gap: 8px; }
.image-mode-button { display: inline-flex; min-height: 34px; align-items: center; gap: 5px; padding: 0 9px; border: 1px solid transparent; border-radius: 11px; color: var(--muted); background: transparent; cursor: pointer; font-size: 10px; font-weight: 650; transition: color .15s, border-color .15s, background .15s, transform .15s; }
.image-mode-button svg { width: 16px; height: 16px; }
.image-mode-button:hover, .image-mode-button:focus-visible { color: var(--accent-strong); background: var(--accent-soft); }
.image-mode-button.active { border-color: color-mix(in srgb, var(--accent) 34%, var(--line)); color: var(--accent-strong); background: var(--accent-soft); }
.image-mode-button:disabled { opacity: .5; cursor: not-allowed; }
.composer.image-mode { border-color: color-mix(in srgb, var(--accent) 58%, var(--line)); box-shadow: 0 10px 34px rgba(70,53,42,.11), 0 0 0 3px var(--accent-soft); }
.char-count { color: var(--subtle); font-size: 9px; opacity: 0; transition: opacity .15s; }
.composer:focus-within .char-count { opacity: 1; }
.send-button { display: grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 0; border-radius: 50%; color: var(--on-accent); background: color-mix(in srgb, var(--muted) 48%, var(--surface)); cursor: default; transition: transform .15s, background .15s, box-shadow .15s; }
.send-button.ready { background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent) 72%, var(--glow))); box-shadow: 0 6px 16px rgba(103,78,119,.22); cursor: pointer; }
.send-button.ready:hover { box-shadow: 0 8px 20px rgba(103,78,119,.28); transform: translateY(-1px) scale(1.03); }
.send-button:disabled { opacity: .55; }
.send-button svg { width: 19px; height: 19px; stroke-width: 2.2; }
.disclaimer { margin-top: 8px; margin-bottom: 0; color: var(--subtle); text-align: center; font-size: 10px; }
.inline-error { margin-top: 0; margin-bottom: 8px; padding: 9px 12px; border: 1px solid rgba(208,14,23,.18); border-radius: 10px; color: var(--danger); background: rgba(208,14,23,.05); font-size: 12px; }

.sidebar-backdrop, .modal-backdrop { position: fixed; inset: 0; border: 0; background: rgba(31,25,34,.42); backdrop-filter: blur(3px); }
.sidebar-backdrop { z-index: 25; }
.modal { position: fixed; z-index: 80; inset: 0; display: grid; place-items: center; padding: 20px; }
.modal-backdrop { z-index: -1; cursor: default; }
.modal-card { width: min(920px, 100%); max-height: min(84vh, 780px); overflow: auto; padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: var(--shadow); }
.compact-modal { width: min(480px, 100%); }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.modal-head h2 { margin: 4px 0 0; font-size: 20px; letter-spacing: -.02em; }
.modal-eyebrow { color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.field-label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 12px; font-weight: 600; }
.field-input { width: 100%; min-height: 44px; padding: 0 13px; border: 1px solid var(--line-strong); border-radius: 11px; color: var(--text); background: var(--surface); outline: none; transition: border-color .15s, box-shadow .15s, background .15s; }
.field-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.identity-card { margin: 16px 0; padding: 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-soft); }
.identity-card span { color: var(--muted); font-size: 11px; }
.identity-card strong { display: block; margin-top: 4px; font-size: 15px; }
.identity-card p { margin: 9px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.security-card { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 12px; margin: 0 0 16px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; }
.security-card span { color: var(--muted); font-size: 10px; }
.security-card strong { display: block; margin-top: 4px; font-size: 13px; }
.security-card p { margin: 5px 0 0; color: var(--muted); font-size: 10px; line-height: 1.5; }
.danger-outline { color: var(--danger); border-color: rgba(208,14,23,.25); }
.primary-button, .secondary-button { min-height: 42px; padding: 0 16px; border-radius: 11px; cursor: pointer; font-weight: 650; transition: color .15s, background .15s, border-color .15s, box-shadow .15s, transform .15s; }
.primary-button { width: 100%; border: 0; color: var(--on-accent); background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 76%, var(--glow))); box-shadow: 0 7px 18px rgba(103,78,119,.18); }
.primary-button:hover:not(:disabled) { box-shadow: 0 9px 23px rgba(103,78,119,.25); transform: translateY(-1px); }
.primary-button:disabled { opacity: .52; cursor: wait; }
.secondary-button { border: 1px solid var(--line-strong); color: var(--text); background: var(--surface); font-size: 12px; }
.secondary-button:hover, .secondary-button:focus-visible { border-color: color-mix(in srgb, var(--accent) 34%, var(--line)); background: var(--surface-soft); }
.secondary-button:disabled { opacity: .5; cursor: wait; }
.logout-button { width: 100%; margin-top: 9px; color: var(--danger); }
.totp-step { display: grid; gap: 12px; }
.totp-intro { margin: 0 0 4px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.totp-step .field-label { margin: 3px 0 -5px; }
.code-input { font-size: 18px; font-variant-numeric: tabular-nums; font-weight: 650; letter-spacing: .22em; text-align: center; }
.setup-instructions { margin: 0; padding-left: 20px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.qr-box { display: grid; place-items: center; width: min(238px, 100%); min-height: 238px; margin: 2px auto; padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.qr-box svg { display: block; width: 100%; height: auto; }
.manual-key { padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; color: var(--muted); font-size: 11px; }
.manual-key summary { cursor: pointer; }
.manual-key code { display: block; margin: 10px 0 3px; padding: 9px; border-radius: 8px; color: var(--text); background: var(--surface-soft); overflow-wrap: anywhere; letter-spacing: .08em; user-select: all; }
.modal-actions { display: grid; grid-template-columns: auto 1fr; gap: 8px; }
.modal-actions .primary-button { width: auto; }
.success-badge { justify-self: start; padding: 5px 9px; border-radius: 999px; color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); font-size: 10px; font-weight: 700; }
.totp-step h3 { margin: 0; font-size: 17px; }
.recovery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); }
.recovery-grid code { padding: 7px; border-radius: 7px; color: var(--text); background: var(--surface); text-align: center; font-size: 13px; letter-spacing: .06em; user-select: all; }
.full-button { width: 100%; }
.danger-button { background: var(--danger); }

.permission-intro { margin: -4px 0 16px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.permission-kind-card { margin-bottom: 16px; padding: 14px; border: 1px solid var(--line); border-radius: 13px; background: linear-gradient(135deg, var(--accent-soft), var(--surface-soft)); }
.permission-kind-card > span { color: var(--subtle); font-size: 9px; font-weight: 700; letter-spacing: .08em; }
.permission-kind-card strong { display: block; margin-top: 5px; color: var(--accent-strong); font-size: 17px; }
.permission-kind-card p { margin: 6px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.permission-request-form { display: grid; gap: 9px; }
.permission-textarea { min-height: 112px; padding-top: 11px; padding-bottom: 11px; resize: vertical; line-height: 1.55; }
.permission-form-meta { display: flex; justify-content: flex-end; color: var(--subtle); font-size: 9px; }
.permission-feedback { margin: 0; padding: 9px 11px; border-radius: 9px; color: var(--success); background: color-mix(in srgb, var(--success) 9%, transparent); font-size: 11px; line-height: 1.45; }
.permission-feedback-error { color: var(--danger); background: color-mix(in srgb, var(--danger) 7%, transparent); }
.permission-actions { margin-top: 3px; }

.admin-modal-card { width: min(980px, 100%); }
.admin-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 5px; margin: -3px 0 16px; padding: 4px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-soft); }
.admin-tab { display: inline-flex; min-height: 40px; align-items: center; justify-content: center; gap: 5px; padding: 0 10px; border: 0; border-radius: 10px; color: var(--muted); background: transparent; cursor: pointer; font-size: 12px; font-weight: 650; }
.admin-tab:hover, .admin-tab:focus-visible { color: var(--text); }
.admin-tab.active { color: var(--accent-strong); background: var(--surface); box-shadow: 0 3px 12px rgba(70,53,42,.08); }
.admin-tab .notification-badge { min-width: 18px; height: 18px; margin-left: 2px; padding: 0 5px; }
.admin-panel { min-height: 180px; }
.admin-section-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.admin-section-toolbar > div { display: grid; gap: 3px; }
.admin-section-toolbar strong { font-size: 13px; }
.admin-section-toolbar span { color: var(--subtle); font-size: 10px; }
.admin-toolbar { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; }
.admin-summary { display: flex; justify-content: space-between; gap: 14px; margin: 14px 0 10px; color: var(--subtle); font-size: 11px; }
.admin-message { margin: 10px 0; padding: 10px 12px; border-radius: 10px; color: var(--muted); background: var(--surface-soft); font-size: 12px; }
.admin-message-error { color: var(--danger); background: rgba(208,14,23,.05); }
.admin-list { display: grid; gap: 10px; }
.admin-empty { padding: 36px; border: 1px dashed var(--line-strong); border-radius: 12px; color: var(--subtle); text-align: center; font-size: 12px; }
.admin-item { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.admin-account-item.account-disabled { background: color-mix(in srgb, var(--surface-soft) 72%, var(--surface)); }
.admin-account-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.admin-account-identity { display: flex; min-width: 0; align-items: center; gap: 10px; }
.admin-account-avatar { display: grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; border-radius: 11px; color: var(--on-accent); background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--glow))); font-size: 12px; font-weight: 750; }
.admin-account-identity > div { display: grid; min-width: 0; gap: 3px; }
.admin-account-identity strong { overflow: hidden; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.admin-account-identity span { color: var(--subtle); font-size: 10px; }
.admin-account-badges { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 5px; }
.account-status-badge { display: inline-flex; padding: 4px 7px; border-radius: 999px; font-size: 9px; font-weight: 700; }
.status-enabled, .status-resolved { color: var(--success); background: color-mix(in srgb, var(--success) 11%, transparent); }
.status-disabled { color: var(--danger); background: color-mix(in srgb, var(--danger) 8%, transparent); }
.status-protected, .status-permission { color: var(--accent-strong); background: var(--accent-soft); }
.status-unread { color: var(--on-accent); background: var(--accent); }
.status-read { color: var(--muted); background: var(--surface-soft); }
.admin-permission-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 14px; }
.admin-permission-toggle { position: relative; display: grid; min-height: 58px; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 11px; background: var(--surface-soft); cursor: pointer; }
.admin-permission-toggle > span:first-child { display: grid; gap: 3px; }
.admin-permission-toggle strong { font-size: 11px; }
.admin-permission-toggle small { color: var(--subtle); font-size: 9px; }
.admin-permission-toggle input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.toggle-control { position: relative; width: 34px; height: 20px; border-radius: 999px; background: var(--line-strong); transition: background .16s; }
.toggle-control::after { position: absolute; top: 3px; left: 3px; width: 14px; height: 14px; border-radius: 50%; background: var(--surface); box-shadow: 0 1px 4px rgba(0,0,0,.18); content: ""; transition: transform .16s; }
.admin-permission-toggle input:checked + .toggle-control { background: var(--accent); }
.admin-permission-toggle input:checked + .toggle-control::after { transform: translateX(14px); }
.admin-permission-toggle input:focus-visible + .toggle-control { outline: 2px solid var(--accent); outline-offset: 3px; }
.admin-permission-toggle:has(input:disabled) { cursor: not-allowed; opacity: .62; }
.admin-account-actions { display: flex; justify-content: flex-end; margin-top: 11px; }
.admin-account-actions .secondary-button { min-height: 34px; padding: 0 11px; font-size: 10px; }
.admin-item-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.admin-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: var(--subtle); font-size: 10px; }
.record-status { padding: 3px 7px; border-radius: 999px; }
.record-success { color: var(--success); background: color-mix(in srgb, var(--success) 11%, transparent); }
.record-failed { color: var(--danger); background: color-mix(in srgb, var(--danger) 8%, transparent); }
.admin-delete { padding: 6px 8px; border: 1px solid rgba(208,14,23,.17); border-radius: 8px; color: var(--danger); background: transparent; cursor: pointer; font-size: 11px; }
.admin-block { margin-top: 13px; }
.admin-block > span { display: block; margin-bottom: 5px; color: var(--subtle); font-size: 9px; font-weight: 700; letter-spacing: .08em; }
.admin-block > div { max-height: 210px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; line-height: 1.6; }
.admin-inbox-item.message-unread { border-color: color-mix(in srgb, var(--accent) 38%, var(--line)); box-shadow: inset 3px 0 var(--accent); }
.admin-message-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; margin-top: 13px; }
.admin-action-button { min-height: 34px; padding: 0 11px; font-size: 10px; }
.admin-action-button[data-blocked="true"] { opacity: .52; cursor: help; }
.toast { position: fixed; z-index: 120; left: 50%; bottom: 94px; max-width: min(430px, calc(100% - 32px)); padding: 11px 15px; border: 1px solid rgba(255,255,255,.10); border-radius: 12px; color: #fff; background: #302638; box-shadow: var(--shadow); transform: translateX(-50%); font-size: 12px; }

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #19171b;
    --sidebar: #211e23;
    --surface: #28242b;
    --surface-soft: #302b32;
    --surface-hover: #342e36;
    --surface-active: #3a323c;
    --text: #f1ece5;
    --muted: #c0b6ad;
    --subtle: #92877f;
    --line: rgba(255,244,232,.08);
    --line-strong: rgba(255,244,232,.15);
    --accent: #a98abc;
    --accent-strong: #c1a4d1;
    --accent-soft: rgba(169,138,188,.15);
    --glow: #d9a15b;
    --glow-soft: rgba(217,161,91,.13);
    --success: #70b89c;
    --danger: #e27b84;
    --on-accent: #ffffff;
    --shadow: 0 20px 60px rgba(0,0,0,.40);
    --shadow-soft: 0 8px 28px rgba(0,0,0,.23);
  }
  .composer { box-shadow: 0 8px 30px rgba(0,0,0,.25); }
  .message-content pre { color: #eee9e3; background: #121015; }
}

@media (max-width: 820px) {
  .app-shell { display: block; }
  .mobile-only { display: grid !important; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: min(var(--sidebar-width), calc(100vw - 54px)); transform: translateX(-105%); box-shadow: var(--shadow); transition: transform .2s ease; }
  .sidebar.open { transform: translateX(0); }
  .chat-main { width: 100%; }
  .topbar { grid-template-columns: auto 1fr auto; gap: 8px; padding-left: 8px; }
  .topbar-actions .text-button { padding: 6px 7px; font-size: 11px; }
  .message-row { width: min(100% - 28px, 760px); }
  .conversation-more { width: 38px; height: 36px; opacity: 1; }
  .message-meta { opacity: 1; }
  .composer-area { padding-right: 12px; padding-bottom: calc(12px + env(safe-area-inset-bottom)); padding-left: 12px; }
  .empty-state { padding-top: 42px; }
}

@media (max-width: 560px) {
  .auth-screen { padding: 16px; }
  .auth-card { padding: 26px 22px 24px; border-radius: 22px; }
  .auth-heading h1 { font-size: 27px; }
  .field-input, .composer textarea { font-size: 16px; }
  .suggestion-grid { grid-template-columns: 1fr; }
  .suggestion { min-height: 72px; padding: 13px 15px; }
  .user-row .message-body { max-width: 86%; }
  .image-frame { min-height: 180px; }
  .image-attachment-footer { align-items: flex-start; flex-direction: column; gap: 5px; }
  .topbar { padding-right: 8px; }
  .topbar-actions { gap: 0; }
  .reasoning-button { width: 76px; min-width: 76px; padding: 0 7px 0 9px; }
  .reasoning-menu { position: fixed; top: 58px; right: 8px; width: min(340px, calc(100vw - 16px)); }
  .topbar-actions .text-button { padding: 6px; font-size: 10px; }
  .language-settings { margin-left: 0; }
  .language-settings.auth-language-settings { top: max(13px, env(safe-area-inset-top)); right: max(8px, env(safe-area-inset-right)); }
  .language-popover,
  .auth-language-settings .language-popover { position: fixed; top: 58px; right: 8px; width: min(210px, calc(100vw - 16px)); }
  .empty-state { width: min(100% - 28px, 760px); }
  .empty-state h2 { font-size: 27px; }
  .empty-state > p { font-size: 13px; }
  .admin-toolbar { grid-template-columns: 1fr 1fr; }
  .admin-toolbar .field-input { grid-column: 1 / -1; }
  .admin-summary { flex-direction: column; }
  .admin-tabs { gap: 3px; }
  .admin-tab { padding: 0 5px; font-size: 10px; }
  .admin-section-toolbar { align-items: flex-start; }
  .admin-account-head { align-items: flex-start; flex-direction: column; }
  .admin-account-badges { justify-content: flex-start; }
  .admin-permission-grid { grid-template-columns: 1fr; }
  .admin-message-actions { justify-content: flex-start; }
  .permission-actions { grid-template-columns: 1fr 1fr; }
  .permission-actions > * { width: 100%; }
  .modal { padding: 10px; }
  .modal-card { padding: 18px; border-radius: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}