:root {
  color-scheme: light;
  --ink: #17201c;
  --ink-soft: #34423b;
  --muted: #6d776f;
  --paper: #f2ebdd;
  --paper-light: #fbf7ee;
  --paper-deep: #dfd1bb;
  --surface: rgba(255, 252, 244, .84);
  --surface-solid: #fffcf5;
  --green: #0b2b23;
  --green-raised: #123e32;
  --green-soft: #2f6653;
  --green-mist: #dce9e1;
  --brass: #b18448;
  --brass-light: #e0c99f;
  --oxblood: #78353b;
  --oxblood-mist: #f0e2df;
  --line: rgba(23, 54, 43, .14);
  --line-strong: rgba(23, 54, 43, .25);
  --danger: #97433c;
  --success: #377358;
  --shadow-sm: 0 8px 26px rgba(22, 47, 38, .075);
  --shadow-md: 0 22px 62px rgba(22, 47, 38, .13);
  --shadow-lg: 0 40px 110px rgba(3, 18, 13, .32);
  --serif: Baskerville, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Aptos, Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-family: var(--sans);
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; }
html { background: var(--paper); }
body { margin: 0; color: var(--ink); background: var(--paper); overscroll-behavior: none; -webkit-font-smoothing: antialiased; }
button, input, textarea { font: inherit; }
button { color: inherit; }
button, .suggestion, .source-card, .composer, .history-item > button:first-child { transition: border-color .18s ease, background-color .18s ease, color .18s ease, box-shadow .18s ease, transform .18s ease, opacity .18s ease; }
button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(167, 122, 61, .34);
  outline-offset: 3px;
}
::selection { color: #fff; background: var(--green-soft); }
[hidden] { display: none !important; }
.clipboard-helper { position: fixed; inset: 0 auto auto -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.eyebrow {
  margin: 0 0 11px;
  color: var(--brass);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
}

/* Login */
.login-view {
  width: 100%;
  min-height: var(--app-height, 100dvh);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  padding: 34px;
  color: #f8f4eb;
  background: #061b15;
}
.login-view::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .18;
  background:
    repeating-linear-gradient(90deg, transparent 0 9.6%, rgba(224,201,159,.11) 9.7% 9.85%, transparent 9.95% 19.5%),
    linear-gradient(180deg, transparent 22%, rgba(0,0,0,.2));
  mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
  pointer-events: none;
}
.login-atmosphere {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 23% 16%, rgba(211, 169, 98, .2), transparent 24%),
    radial-gradient(circle at 78% 78%, rgba(70, 133, 104, .22), transparent 29%),
    linear-gradient(145deg, #061711 4%, #12372b 57%, #081f18 100%);
  transform: rotate(-3deg) scale(1.05);
}
.login-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .21;
  background-image: radial-gradient(rgba(255,255,255,.12) .55px, transparent .7px);
  background-size: 5px 5px;
  mask-image: radial-gradient(circle at center, #000, transparent 72%);
}
.login-card {
  position: relative;
  width: min(570px, 100%);
  padding: 44px 58px 42px 75px;
  border: 1px solid rgba(224, 201, 159, .48);
  border-left-width: 9px;
  border-radius: 8px 30px 30px 8px;
  background:
    linear-gradient(90deg, rgba(0,0,0,.18), transparent 8%, transparent 94%, rgba(255,255,255,.035)),
    radial-gradient(circle at 72% 12%, rgba(224,201,159,.1), transparent 31%),
    linear-gradient(145deg, #123c30, #071f18 78%);
  box-shadow:
    0 8px 0 #dfd2bb,
    0 12px 0 #a7895e,
    -20px 28px 78px rgba(0,0,0,.43),
    inset 0 0 0 5px rgba(224,201,159,.045);
}
.login-card::before {
  content: "";
  position: absolute;
  inset: 17px auto 15px 22px;
  width: 27px;
  border: solid rgba(224,201,159,.22);
  border-width: 0 1px;
  border-radius: 50%;
  background: linear-gradient(90deg, transparent, rgba(0,0,0,.22), transparent);
}
.login-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(224,201,159,.18);
  border-radius: 4px 21px 21px 4px;
  box-shadow: inset 0 0 0 3px rgba(0,0,0,.08);
  pointer-events: none;
}
.login-brand { display: grid; justify-items: center; text-align: center; }
.login-logo {
  width: 182px;
  height: 182px;
  margin-bottom: 24px;
  border: 1px solid rgba(224,201,159,.32);
  border-radius: 50%;
  box-shadow: 0 22px 44px rgba(0,0,0,.27);
}
.login-card h1 { margin: 0; font: 500 58px/.95 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.login-subtitle { margin: 13px 0 0; color: var(--brass-light); font: 700 11px/1.2 var(--sans); letter-spacing: .23em; text-transform: uppercase; }
.login-copy { margin: 25px auto 31px; max-width: 390px; color: rgba(248, 244, 235, .69); font-size: 15px; line-height: 1.65; text-align: center; }
.login-form { display: grid; gap: 15px; }
.login-form label, .create-user-form label { display: grid; gap: 8px; }
.login-form label span, .create-user-form label span { font-size: 12px; font-weight: 760; letter-spacing: .055em; }
.login-form input {
  width: 100%; min-height: 58px; border: 1px solid rgba(255,255,255,.15); border-radius: 13px;
  padding: 0 17px; color: #fff; background: rgba(255,255,255,.065); box-shadow: inset 0 1px 0 rgba(255,255,255,.04); font-size: 16px;
}
.login-form input:hover { border-color: rgba(255,255,255,.26); }
.login-form input:focus { border-color: rgba(220,197,156,.58); background: rgba(255,255,255,.09); }
.primary-button {
  min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  border: 1px solid rgba(255,255,255,.18); border-radius: 13px; padding: 0 18px; cursor: pointer; color: #10251d;
  font-size: 15px; font-weight: 780; background: linear-gradient(135deg, #e1cda7, #ba8b4a); box-shadow: 0 13px 30px rgba(0,0,0,.17);
}
.primary-button:hover { filter: brightness(1.035); transform: translateY(-1px); box-shadow: 0 17px 35px rgba(0,0,0,.22); }
.primary-button:active { transform: translateY(0); }
.primary-button:disabled { opacity: .55; cursor: wait; transform: none; }
.privacy-note { margin: 26px 0 0; color: rgba(248,244,235,.43); font-size: 12px; line-height: 1.5; text-align: center; }
.form-error { min-height: 19px; margin: -3px 0 0; color: #efa99f; font-size: 13px; }
.pwa-actions { display: grid; justify-items: center; gap: 10px; margin-top: 17px; }
.pwa-install-button {
  min-height: 43px; display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: 1px solid rgba(224,201,159,.3); border-radius: 11px; padding: 0 17px; cursor: pointer;
  color: rgba(255,255,255,.82); background: rgba(255,255,255,.055); font-size: 13px; font-weight: 700;
}
.pwa-install-button:hover { border-color: rgba(224,201,159,.52); color: #fff; background: rgba(255,255,255,.09); }
.pwa-install-button span { color: var(--brass-light); font-size: 17px; }
.pwa-install-hint { max-width: 390px; margin: 0; color: rgba(248,244,235,.62); font-size: 12px; line-height: 1.55; text-align: center; text-wrap: balance; }

/* Main shell */
.app-shell { width: 100%; height: var(--app-height, 100dvh); min-height: 0; display: grid; grid-template-columns: 318px minmax(0, 1fr); overflow: hidden; }
.sidebar {
  position: relative;
  height: var(--app-height, 100dvh); min-width: 0; display: flex; flex-direction: column; padding: 22px 18px;
  color: #f5efe3; background: linear-gradient(180deg, #10382d 0%, #08251d 100%); border-right: 1px solid rgba(224,201,159,.13);
  box-shadow: 10px 0 32px rgba(19, 45, 36, .05);
}
.sidebar::after { content: ""; position: absolute; inset: 0 0 auto; height: 180px; pointer-events: none; background: radial-gradient(circle at 35% 0, rgba(205,164,95,.11), transparent 68%); }
.brand-row { position: relative; z-index: 1; display: flex; align-items: center; gap: 14px; padding: 4px 5px 24px; }
.brand-logo-button { width: 58px; height: 58px; flex: 0 0 auto; display: grid; place-items: center; border: 0; border-radius: 50%; padding: 0; cursor: pointer; background: transparent; }
.brand-row img { width: 58px; height: 58px; border: 1px solid rgba(224,201,159,.25); border-radius: 50%; box-shadow: 0 9px 24px rgba(0,0,0,.22); }
.brand-logo-button:hover img { border-color: rgba(224,201,159,.55); transform: rotate(-2deg) scale(1.035); box-shadow: 0 12px 30px rgba(0,0,0,.3); }
.brand-row div { min-width: 0; display: grid; line-height: 1.05; }
.brand-row strong { font: 500 24px var(--serif); letter-spacing: -.015em; }
.brand-row span { margin-top: 7px; overflow: hidden; color: rgba(255,255,255,.48); font-size: 9px; letter-spacing: .14em; text-overflow: ellipsis; text-transform: uppercase; white-space: nowrap; }
.close-sidebar { display: none; margin-left: auto; }
.new-chat-button {
  position: relative; z-index: 1; width: 100%; min-height: 50px; border: 1px solid rgba(255,255,255,.13); border-radius: 12px;
  padding: 0 15px; cursor: pointer; color: #fff; text-align: left; font-size: 14px; font-weight: 700; background: rgba(255,255,255,.065); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
}
.new-chat-button span { margin-right: 7px; color: var(--brass-light); font-size: 17px; font-weight: 400; }
.new-chat-button:hover { border-color: rgba(220,197,156,.3); background: rgba(255,255,255,.1); transform: translateY(-1px); }
.new-chat-button:disabled { opacity: .48; cursor: default; transform: none; }
.history-heading { display: flex; justify-content: space-between; margin: 29px 10px 11px; color: rgba(255,255,255,.4); font-size: 10px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.chat-history { min-height: 0; flex: 1; overflow-y: auto; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.13) transparent; }
.history-item { position: relative; display: flex; align-items: center; margin: 2px 0; border-radius: 10px; }
.history-item > button:first-child {
  min-width: 0; flex: 1; border: 1px solid transparent; border-radius: 10px; padding: 12px 38px 12px 11px; cursor: pointer;
  overflow: hidden; color: rgba(255,255,255,.68); background: transparent; text-align: left; text-overflow: ellipsis; white-space: nowrap; font-size: 13.5px;
}
.history-item.active > button:first-child { border-color: rgba(255,255,255,.07); color: #fff; background: rgba(255,255,255,.09); box-shadow: inset 2px 0 0 var(--brass-light); }
.history-item > button:first-child:hover { color: #fff; background: rgba(255,255,255,.065); }
.history-item > button:disabled { cursor: default; }
.request-busy .history-item > button:first-child { opacity: .58; }
.history-delete { position: absolute; right: 3px; width: 29px; height: 29px; border: 0; border-radius: 8px; cursor: pointer; color: rgba(255,255,255,.38); background: transparent; opacity: 0; }
.history-item:hover .history-delete, .history-delete:focus-visible { opacity: 1; }
.history-delete:hover { color: #fff; background: rgba(255,255,255,.09); }
.sidebar-footer { display: grid; gap: 3px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.085); }
.library-state { display: flex; align-items: center; gap: 11px; margin-bottom: 2px; padding: 10px 9px 12px; }
.library-state div { min-width: 0; display: grid; gap: 3px; }
.library-state strong { overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.library-state span:last-child { color: rgba(255,255,255,.45); font-size: 11px; }
.status-dot { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: #d0a24f; box-shadow: 0 0 0 5px rgba(208,162,79,.1); }
.status-dot.ready { background: #71bd91; box-shadow: 0 0 0 5px rgba(113,189,145,.1); }
.sidebar-action { min-height: 42px; border: 0; border-radius: 9px; padding: 0 9px; cursor: pointer; color: rgba(255,255,255,.62); background: transparent; text-align: left; font-size: 13px; }
.sidebar-action span { display: inline-block; width: 22px; color: rgba(220,197,156,.7); text-align: center; }
.sidebar-action:hover { color: #fff; background: rgba(255,255,255,.065); }
.user-identity { margin: 9px 10px 1px; overflow: hidden; color: rgba(255,255,255,.35); font-size: 10px; letter-spacing: .04em; text-overflow: ellipsis; white-space: nowrap; }

/* Workspace and welcome */
.workspace { position: relative; min-width: 0; min-height: 0; height: 100%; overflow: hidden; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; background: radial-gradient(circle at 72% 13%, rgba(177,132,72,.11), transparent 31%), linear-gradient(90deg, rgba(255,255,255,.18), transparent 20%, transparent 80%, rgba(255,255,255,.14)), repeating-linear-gradient(0deg, rgba(83,62,35,.018) 0, rgba(83,62,35,.018) 1px, transparent 1px, transparent 6px), var(--paper); }
.topbar { position: relative; z-index: 4; min-height: 72px; display: flex; align-items: center; justify-content: center; padding: 0 28px; border-bottom: 1px solid var(--line); background: rgba(247,244,236,.86); backdrop-filter: blur(16px) saturate(1.2); }
.conversation-title { display: grid; text-align: center; }
.conversation-title span { max-width: 580px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; font-weight: 720; }
.conversation-title small { margin-top: 4px; color: var(--muted); font-size: 10px; letter-spacing: .04em; }
.icon-button { width: 39px; height: 39px; display: grid; place-items: center; border: 1px solid transparent; border-radius: 11px; cursor: pointer; background: transparent; font-size: 20px; }
.icon-button:hover { border-color: var(--line); background: rgba(255,255,255,.48); }
.menu-button, #newChatMobile { display: none; }
.conversation { min-height: 0; overflow-x: hidden; overflow-y: auto; overscroll-behavior: contain; scroll-behavior: smooth; scroll-padding: 20px 0 34px; touch-action: pan-y; scrollbar-color: rgba(16,47,38,.19) transparent; -webkit-overflow-scrolling: touch; }
.welcome-panel { position: relative; width: min(1040px, calc(100% - 64px)); margin: clamp(28px, 5vh, 58px) auto 72px; padding: clamp(44px, 6vh, 72px) 58px 58px; overflow: hidden; border: 1px solid rgba(98,76,45,.16); border-radius: 9px 18px 18px 9px; background: linear-gradient(90deg, rgba(91,66,35,.06), transparent 7%, transparent 48.8%, rgba(91,66,35,.045) 50%, transparent 51.2%, transparent 93%, rgba(91,66,35,.055)), repeating-linear-gradient(0deg, transparent 0, transparent 31px, rgba(88,67,41,.025) 32px), rgba(255,251,241,.76); box-shadow: inset 5px 0 0 rgba(177,132,72,.1), 0 24px 70px rgba(44,37,24,.1); text-align: center; }
.welcome-panel::before { content: ""; position: absolute; inset: 13px; border: 1px solid rgba(177,132,72,.09); border-radius: 5px 13px 13px 5px; pointer-events: none; }
.welcome-logo-button { position: relative; width: 132px; height: 132px; margin: 0 0 29px; border: 1px solid rgba(177,132,72,.3); border-radius: 50%; padding: 0; cursor: pointer; overflow: hidden; background: transparent; box-shadow: 0 24px 52px rgba(16,47,38,.17); }
.welcome-logo-button img { width: 100%; height: 100%; display: block; }
.welcome-logo-button:hover { border-color: rgba(177,132,72,.55); transform: translateY(-2px) rotate(-1deg); box-shadow: 0 28px 58px rgba(16,47,38,.22); }
.welcome-panel h2 { position: relative; margin: 0 auto; max-width: 860px; font: 500 clamp(44px, 5vw, 66px)/1.01 var(--serif); letter-spacing: -.045em; text-wrap: balance; }
.welcome-meta { position: relative; display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 23px 0 0; color: var(--brass); font-size: 10px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.welcome-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--brass-light); }
.welcome-panel > p:not(.eyebrow) { position: relative; max-width: 735px; margin: 18px auto 36px; color: var(--muted); font-size: 17px; line-height: 1.72; text-wrap: balance; }
.welcome-panel > .eyebrow { position: relative; font-size: 11px; }
.suggestion-grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 13px; max-width: 900px; margin: 0 auto; text-align: left; }
.suggestion {
  position: relative; min-height: 112px; display: grid; align-content: center; gap: 8px; overflow: hidden;
  border: 1px solid var(--line); border-top-color: rgba(177,132,72,.4); border-radius: 10px 15px 15px 10px; padding: 21px 52px 21px 22px; cursor: pointer; background: rgba(255,253,247,.78); box-shadow: inset 3px 0 0 rgba(177,132,72,.08), 0 6px 20px rgba(25,53,43,.04);
}
.suggestion::after { content: "→"; position: absolute; right: 18px; top: 50%; color: var(--brass); font-size: 16px; transform: translateY(-50%); transition: transform .18s ease; }
.suggestion:hover { border-color: rgba(167,122,61,.42); background: var(--surface-solid); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.suggestion:hover::after { transform: translate(3px,-50%); }
.suggestion span { color: var(--brass); font-size: 10px; font-weight: 820; letter-spacing: .13em; text-transform: uppercase; }
.suggestion strong { color: var(--ink-soft); font: 600 17px/1.3 var(--serif); }

/* Conversation */
.messages { width: min(970px, calc(100% - 56px)); margin: 0 auto; padding: 44px 0 78px; }
.message { display: grid; grid-template-columns: 46px minmax(0, 1fr); gap: 16px; margin-bottom: 35px; }
.message-avatar { width: 44px; height: 44px; display: grid; place-items: center; overflow: hidden; border: 1px solid rgba(177,132,72,.25); border-radius: 50%; color: #fff; background: linear-gradient(145deg, var(--green-raised), var(--green)); box-shadow: 0 8px 20px rgba(16,47,38,.12); font: 650 14px var(--serif); }
.message-avatar img { width: 100%; height: 100%; display: block; object-fit: cover; }
.message-body { min-width: 0; padding-top: 5px; }
.message-label { margin-bottom: 9px; color: var(--muted); font-size: 10px; font-weight: 820; letter-spacing: .12em; text-transform: uppercase; }
.message-content { min-width: 0; overflow-wrap: anywhere; color: var(--ink-soft); font-size: 17px; line-height: 1.72; }
.message-content p { margin: 0 0 14px; }
.message-content h3 { margin: 28px 0 11px; color: var(--ink); font: 600 22px var(--serif); letter-spacing: -.015em; }
.message-content ul, .message-content ol { margin: 8px 0 17px; padding-left: 23px; }
.message-content li { margin: 7px 0; padding-left: 2px; }
.message.user { grid-template-columns: minmax(0,1fr) 44px; max-width: 820px; margin-left: auto; }
.message.user .message-avatar { grid-column: 2; grid-row: 1; color: var(--green); background: var(--green-mist); border-color: rgba(16,47,38,.1); box-shadow: none; }
.message.user .message-body { grid-column: 1; grid-row: 1; text-align: right; }
.message.user .message-content { display: inline-block; max-width: 680px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 16px 5px 16px 16px; color: var(--ink); background: rgba(255,255,255,.68); box-shadow: 0 5px 18px rgba(20,45,36,.035); text-align: left; }
.citation { display: inline-flex; align-items: center; min-height: 22px; margin: 0 2px; border: 1px solid rgba(16,47,38,.07); border-radius: 6px; padding: 0 6px; cursor: pointer; color: var(--green); background: var(--green-mist); font-size: 11px; font-weight: 820; vertical-align: 1px; }
.citation:hover { border-color: rgba(16,47,38,.15); background: #cfdfd6; transform: translateY(-1px); }
.progress-card { max-width: 690px; border: 1px solid var(--line); border-radius: 16px; padding: 16px 17px 13px; color: var(--ink); background: rgba(255,255,255,.57); box-shadow: 0 7px 24px rgba(20,45,36,.045); }
.progress-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.progress-heading > div { min-width: 0; display: grid; gap: 4px; }
.progress-kicker-row { display: flex; align-items: center; gap: 7px; }
.progress-kicker { color: var(--brass); font-size: 8px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.research-spinner { width: 13px; height: 13px; flex: 0 0 auto; border: 2px solid rgba(177,132,72,.2); border-top-color: var(--brass); border-radius: 50%; animation: spin .8s linear infinite; }
.progress-heading strong { overflow: hidden; color: var(--ink-soft); font-size: 13px; font-weight: 680; text-overflow: ellipsis; white-space: nowrap; }
.elapsed-time { flex: 0 0 auto; min-width: 45px; color: var(--green); font: 600 15px var(--serif); text-align: right; font-variant-numeric: tabular-nums; }
.progress-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 17px 0 13px; padding: 0; list-style: none; }
.progress-steps li { position: relative; display: grid; justify-items: center; gap: 6px; color: #9aa29d; font-size: 9px; font-weight: 760; letter-spacing: .045em; }
.progress-steps li::before { content: ""; position: absolute; z-index: 0; top: 10px; right: 50%; width: 100%; height: 1px; background: #d9dcd8; }
.progress-steps li:first-child::before { display: none; }
.progress-steps li > span { position: relative; z-index: 1; width: 21px; height: 21px; display: grid; place-items: center; border: 1px solid #d5d9d6; border-radius: 50%; background: var(--paper-light); font-size: 9px; }
.progress-steps li.active { color: var(--green); }
.progress-steps li.active > span { border-color: var(--brass); color: #fff; background: var(--brass); box-shadow: 0 0 0 4px rgba(167,122,61,.1); }
.progress-steps li.active > span::after { content: ""; position: absolute; inset: -5px; border: 1px solid rgba(167,122,61,.18); border-radius: 50%; animation: breathe 1.8s ease-in-out infinite; }
.progress-steps li.complete { color: var(--green-soft); }
.progress-steps li.complete::before { background: rgba(54,118,90,.38); }
.progress-steps li.complete > span { border-color: rgba(54,118,90,.24); color: var(--success); background: var(--green-mist); }
@keyframes breathe { 50% { transform: scale(1.16); opacity: .25; } }
@keyframes spin { to { transform: rotate(360deg); } }
.connection-state { min-height: 31px; display: flex; align-items: center; gap: 8px; margin: 1px 0 10px; border-radius: 8px; padding: 7px 9px; color: var(--muted); background: rgba(11,43,35,.035); }
.connection-state > span { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(55,115,88,.09); }
.connection-state p { margin: 0; font-size: 10px; line-height: 1.4; }
.connection-state.waiting { color: #7d673f; background: rgba(177,132,72,.075); }
.connection-state.waiting > span { background: var(--brass); box-shadow: 0 0 0 4px rgba(177,132,72,.1); animation: breathe 1.4s ease-in-out infinite; }
.connection-state.warning, .connection-state.offline { color: var(--danger); background: rgba(151,67,60,.07); }
.connection-state.warning > span, .connection-state.offline > span { background: var(--danger); box-shadow: 0 0 0 4px rgba(151,67,60,.09); }
.progress-footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; border-top: 1px solid var(--line); padding-top: 10px; }
.progress-footer > span { color: var(--muted); font-size: 9px; }
.cancel-request { min-height: 29px; border: 1px solid var(--line); border-radius: 8px; padding: 0 9px; cursor: pointer; color: var(--muted); background: transparent; font-size: 9px; font-weight: 740; }
.cancel-request:hover { border-color: rgba(161,68,55,.28); color: var(--danger); background: rgba(161,68,55,.04); }
.request-error { max-width: 690px; display: grid; grid-template-columns: 30px minmax(0,1fr); gap: 12px; border: 1px solid rgba(161,68,55,.17); border-radius: 15px; padding: 15px; color: var(--danger); background: rgba(255,255,255,.53); }
.error-mark { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; color: var(--danger); background: rgba(161,68,55,.09); font-weight: 800; }
.request-error strong { display: block; margin: 2px 0 5px; color: var(--ink); font-size: 13px; }
.request-error p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.error-actions { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 11px; }
.error-actions button { min-height: 31px; border: 1px solid var(--line); border-radius: 8px; padding: 0 10px; cursor: pointer; background: rgba(255,255,255,.75); font-size: 9px; font-weight: 760; }
.error-actions button:hover { border-color: rgba(167,122,61,.4); background: #fff; }
.retry-request { color: var(--green); }
.dismiss-error { color: var(--muted); }
.sources-panel { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 15px; }
.sources-panel summary { width: fit-content; cursor: pointer; color: var(--green); font-size: 12px; font-weight: 780; list-style-position: outside; }
.sources-panel summary:hover { color: var(--brass); }
.source-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }
.source-card { position: relative; min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 13px; padding: 17px 18px; background: rgba(255,255,255,.56); }
.source-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 2px; background: var(--green-soft); opacity: .45; }
.source-card.web::before { background: var(--oxblood); }
.source-card.web .source-kind { color: var(--oxblood); }
.source-card:hover { border-color: var(--line-strong); background: rgba(255,255,255,.76); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.source-card.highlight { border-color: var(--brass); box-shadow: 0 0 0 3px rgba(167,122,61,.11); }
.source-kind { color: var(--brass); font-size: 9px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.source-card.local .source-kind { color: var(--green-soft); }
.source-card strong { display: block; margin: 8px 0 6px; color: var(--ink); font: 600 16px/1.32 var(--serif); }
.source-card p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.source-card a { display: inline-block; margin-top: 9px; color: var(--green-soft); font-size: 12px; font-weight: 750; text-decoration: none; }
.source-card a:hover { color: var(--brass); }

/* Runtime warning */
.service-banner { position: absolute; z-index: 12; top: 84px; left: 50%; width: min(720px, calc(100% - 34px)); display: grid; grid-template-columns: 28px minmax(0,1fr) 34px; align-items: center; gap: 10px; border: 1px solid rgba(151,67,60,.25); border-radius: 13px; padding: 10px 10px 10px 12px; color: var(--danger); background: rgba(255,247,240,.97); box-shadow: 0 16px 45px rgba(62,29,24,.16); transform: translateX(-50%); }
.service-banner-mark { width: 25px; height: 25px; display: grid; place-items: center; border-radius: 50%; background: var(--oxblood-mist); font-weight: 850; }
.service-banner p { margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.45; }
.service-banner button { width: 34px; height: 34px; border: 0; border-radius: 9px; cursor: pointer; color: var(--muted); background: transparent; font-size: 20px; }
.service-banner button:hover { color: var(--danger); background: var(--oxblood-mist); }

/* Install offer */
.install-dialog { width: min(460px, calc(100% - 28px)); overflow: visible; border: 1px solid rgba(177,132,72,.25); border-radius: 22px; padding: 34px 38px 32px; color: var(--ink); background: linear-gradient(145deg, #fffcf5, #f0e6d4); box-shadow: var(--shadow-lg); text-align: center; }
.install-dialog::backdrop { background: rgba(4,18,13,.58); backdrop-filter: blur(5px); }
.install-dialog > img { width: 88px; height: 88px; border: 1px solid rgba(177,132,72,.28); border-radius: 50%; box-shadow: 0 16px 34px rgba(16,47,38,.15); }
.install-dialog .eyebrow { margin-top: 20px; }
.install-dialog h2 { margin: 0; font: 500 35px/1.06 var(--serif); letter-spacing: -.025em; }
.install-dialog > p:not(.eyebrow) { margin: 15px auto 23px; color: var(--muted); font-size: 14px; line-height: 1.6; text-wrap: balance; }
.install-dialog-close { position: absolute; top: 10px; right: 10px; width: 38px; height: 38px; border: 0; border-radius: 10px; cursor: pointer; color: var(--muted); background: transparent; font-size: 22px; }
.install-dialog-close:hover { color: var(--ink); background: rgba(11,43,35,.06); }
.install-dialog-actions { display: grid; gap: 9px; }
.install-dialog-actions .primary-button { width: 100%; }
.install-dialog-actions .small-button { min-height: 42px; justify-content: center; background: rgba(255,255,255,.55); }

/* Book-opening transition */
.book-opening-overlay { position: fixed; z-index: 100; inset: 0; display: grid; place-items: center; overflow: hidden; pointer-events: none; perspective: 1500px; background: radial-gradient(circle at center, rgba(15,55,44,.32), rgba(3,15,11,.82)); }
.opening-book { position: relative; width: min(390px, 72vw); aspect-ratio: .74; transform-style: preserve-3d; }
.opening-pages, .opening-cover { position: absolute; inset: 0; border-radius: 7px 24px 24px 7px; transform-origin: left center; }
.opening-pages { background: repeating-linear-gradient(90deg, #f7f0df 0, #f7f0df 5px, #d7c8ad 6px); box-shadow: 0 20px 70px rgba(0,0,0,.3); transform: translateX(4px) scale(.985); }
.opening-cover { z-index: 2; display: grid; align-content: center; justify-items: center; gap: 18px; border: 1px solid rgba(224,201,159,.5); border-left-width: 8px; padding: 38px; color: #f8f4eb; background: radial-gradient(circle at 70% 18%, rgba(224,201,159,.12), transparent 33%), linear-gradient(145deg, #164536, #061b15); box-shadow: inset 0 0 0 5px rgba(224,201,159,.055), 0 28px 80px rgba(0,0,0,.4); backface-visibility: hidden; }
.opening-cover img { width: 126px; height: 126px; border: 1px solid rgba(224,201,159,.34); border-radius: 50%; }
.opening-cover strong { font: 500 clamp(35px, 6vw, 51px)/1 var(--serif); letter-spacing: -.035em; }
.opening-cover span { color: var(--brass-light); font-size: 9px; font-weight: 800; letter-spacing: .2em; text-transform: uppercase; }
.book-opening-overlay.playing { animation: openingBackdrop 1.15s ease both; }
.book-opening-overlay.playing .opening-book { animation: openingBook 1.15s cubic-bezier(.2,.72,.18,1) both; }
.book-opening-overlay.playing .opening-cover { animation: openingCover 1.15s cubic-bezier(.2,.72,.18,1) both; }
@keyframes openingCover { 0%, 13% { transform: rotateY(0); opacity: 1; } 72% { opacity: 1; } 100% { transform: rotateY(-112deg); opacity: 0; } }
@keyframes openingBook { 0% { transform: scale(.78) rotateX(3deg); } 45% { transform: scale(.9) rotateX(0); } 100% { transform: scale(1.08); } }
@keyframes openingBackdrop { 0% { opacity: 0; } 16%, 74% { opacity: 1; } 100% { opacity: 0; } }

/* Answer feedback */
.answer-feedback { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.feedback-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 9px; }
.feedback-row > span { color: var(--muted); font-size: 11px; font-weight: 690; }
.feedback-actions { display: flex; align-items: center; gap: 5px; }
.feedback-vote, .feedback-note-toggle {
  min-height: 31px; border: 1px solid var(--line); border-radius: 8px; padding: 0 10px; cursor: pointer;
  color: var(--muted); background: rgba(255,255,255,.5); font-size: 11px; font-weight: 750;
}
.feedback-vote { min-width: 44px; padding: 0 9px; }
.feedback-vote:hover, .feedback-note-toggle:hover { border-color: var(--line-strong); color: var(--green); background: #fff; }
.feedback-vote.positive.selected { border-color: rgba(55,115,88,.32); color: var(--success); background: var(--green-mist); }
.feedback-vote.negative.selected { border-color: rgba(151,67,60,.28); color: var(--danger); background: var(--oxblood-mist); }
.feedback-form { display: grid; gap: 8px; margin-top: 11px; border-radius: 11px; padding: 12px; background: rgba(255,255,255,.45); }
.feedback-form label { color: var(--ink-soft); font-size: 11px; font-weight: 720; }
.feedback-form textarea { width: 100%; resize: vertical; border: 1px solid var(--line-strong); border-radius: 9px; padding: 10px; color: var(--ink); background: #fff; font-size: 13px; line-height: 1.45; }
.feedback-form > div { display: flex; flex-wrap: wrap; gap: 7px; }
.feedback-status { min-height: 15px; margin: 6px 0 0 !important; color: var(--muted); font-size: 10px; }

/* Composer */
.composer-wrap { position: relative; z-index: 3; padding: 12px 28px 18px; background: linear-gradient(0deg, var(--paper) 70%, rgba(244,240,231,0)); }
.composer { width: min(970px, 100%); margin: 0 auto; border: 1px solid rgba(16,47,38,.16); border-radius: 18px; padding: 14px 13px 11px 18px; background: rgba(255,254,251,.9); box-shadow: 0 16px 44px rgba(16,47,38,.09), inset 0 1px 0 rgba(255,255,255,.9); backdrop-filter: blur(16px); }
.composer:focus-within { border-color: rgba(167,122,61,.58); background: #fffefa; box-shadow: 0 18px 48px rgba(16,47,38,.11), 0 0 0 3px rgba(167,122,61,.08); }
.composer textarea { width: 100%; max-height: 180px; resize: none; overflow-y: auto; border: 0; outline: 0; padding: 4px 3px 12px; color: var(--ink); background: transparent; font-size: 16px; line-height: 1.55; }
.composer textarea { scrollbar-width: none; }
.composer textarea::-webkit-scrollbar { display: none; }
.composer textarea::placeholder { color: #929a95; }
.composer-footer { display: flex; align-items: center; justify-content: space-between; }
.research-toggle { display: flex; align-items: center; gap: 9px; cursor: pointer; color: var(--muted); font-size: 12px; font-weight: 650; }
.research-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-track { width: 31px; height: 18px; border-radius: 10px; padding: 2px; background: #cbd1cd; box-shadow: inset 0 1px 2px rgba(0,0,0,.07); transition: .2s ease; }
.toggle-track span { display: block; width: 14px; height: 14px; border-radius: 50%; background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.13); transition: .2s ease; }
.research-toggle input:checked + .toggle-track { background: var(--green-soft); }
.research-toggle input:checked + .toggle-track span { transform: translateX(13px); }
.research-toggle input:focus-visible + .toggle-track { outline: 3px solid rgba(167,122,61,.28); outline-offset: 2px; }
.send-button { width: 44px; height: 44px; display: grid; place-items: center; border: 0; border-radius: 12px; cursor: pointer; color: #fff; background: linear-gradient(145deg, var(--green-raised), var(--green)); box-shadow: 0 7px 16px rgba(16,47,38,.2); }
.send-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.send-button:hover { background: var(--green-soft); transform: translateY(-1px); box-shadow: 0 9px 20px rgba(16,47,38,.24); }
.send-button:disabled { opacity: .4; cursor: wait; transform: none; box-shadow: none; }
.composer-hint { margin: 8px auto 0; color: #858e88; font-size: 10px; letter-spacing: .015em; text-align: center; }

/* Access management */
.admin-dialog { width: min(820px, calc(100% - 32px)); max-height: min(850px, calc(100% - 32px)); overflow: auto; border: 1px solid rgba(255,255,255,.65); border-radius: 24px; padding: 0; color: var(--ink); background: var(--paper-light); box-shadow: var(--shadow-lg); }
.admin-dialog::backdrop { background: rgba(4,18,13,.68); backdrop-filter: blur(7px); }
.dialog-header { position: sticky; z-index: 2; top: 0; display: flex; align-items: flex-start; justify-content: space-between; padding: 25px 28px 20px; border-bottom: 1px solid var(--line); background: rgba(251,249,244,.92); backdrop-filter: blur(14px); }
.dialog-header h2 { margin: 0; font: 500 31px var(--serif); letter-spacing: -.025em; }
.create-user-form { padding: 23px 28px 24px; border-bottom: 1px solid var(--line); background: rgba(232,224,209,.22); }
.create-user-form h3, .user-section h3 { margin: 0 0 15px; font: 600 17px var(--serif); }
.form-grid { display: grid; gap: 11px; }
.create-user-form input { min-width: 0; min-height: 44px; border: 1px solid var(--line-strong); border-radius: 10px; padding: 0 12px; color: var(--ink); background: rgba(255,255,255,.78); }
.create-user-form input:focus { border-color: rgba(167,122,61,.6); background: #fff; }
.primary-button.compact { min-height: 44px; display: inline-flex; justify-content: center; margin-top: 0; border-color: transparent; box-shadow: 0 8px 20px rgba(16,47,38,.12); }
.user-section { padding: 23px 28px 30px; }
.user-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.user-section-heading span { color: var(--muted); font-size: 10px; text-align: right; }
.user-list { display: grid; gap: 10px; }
.user-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 16px; align-items: center; border: 1px solid var(--line); border-radius: 14px; padding: 15px; background: rgba(255,255,255,.58); box-shadow: 0 3px 12px rgba(20,45,36,.025); }
.user-row:hover { border-color: var(--line-strong); background: rgba(255,255,255,.82); }
.user-row.inactive { opacity: .62; filter: saturate(.65); }
.user-meta { min-width: 0; display: grid; gap: 12px; }
.user-name { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; }
.user-name > strong { overflow: hidden; margin-right: 3px; text-overflow: ellipsis; }
.role-badge, .state-badge { display: inline-flex; align-items: center; min-height: 20px; border-radius: 10px; padding: 0 7px; font-size: 8px; font-weight: 820; letter-spacing: .07em; text-transform: uppercase; }
.role-badge { color: #795321; background: #f0e2c9; }
.state-badge.active { color: #2d684e; background: #e0eee6; }
.state-badge.blocked { color: #8b4138; background: #f4e2df; }
.usage-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.usage-stats > div { min-width: 0; display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 1px 8px; border-left: 2px solid var(--paper-deep); padding-left: 10px; }
.usage-stats span { grid-column: 1 / -1; color: var(--muted); font-size: 8px; font-weight: 780; letter-spacing: .09em; text-transform: uppercase; }
.usage-stats strong { color: var(--green); font: 600 19px var(--serif); }
.usage-stats small { overflow: hidden; color: var(--muted); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.user-insights { display: flex; align-items: flex-start; gap: 9px; color: var(--muted); font-size: 10px; line-height: 1.45; }
.user-insights span { flex: 0 0 auto; border-radius: 9px; padding: 3px 7px; color: var(--green-soft); background: var(--green-mist); font-weight: 740; }
.user-insights p { min-width: 0; margin: 2px 0 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.access-form-grid { grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr) auto; align-items: end; }
.field-note, .pricing-note { margin: 9px 0 0; color: var(--muted); font-size: 10px; line-height: 1.5; }
.pricing-note { margin: -5px 0 15px; }
.access-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.code-editor { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0,1fr) auto auto; gap: 8px; border-top: 1px solid var(--line); padding-top: 12px; }
.code-editor input { min-width: 0; min-height: 37px; border: 1px solid var(--line-strong); border-radius: 9px; padding: 0 11px; background: #fff; }
.generated-access { margin-top: 16px; padding: 16px; border: 1px solid rgba(55,115,88,.2); border-top: 3px solid var(--green-soft); border-radius: 13px; background: rgba(55,115,88,.065); display: grid; gap: 10px; }
.generated-access[hidden] { display: none; }
.generated-access-heading { display: grid; gap: 3px; margin-bottom: 2px; }
.generated-access-heading strong { font: 600 16px var(--serif); }
.generated-access-heading span, .generated-access > p { color: var(--muted); font-size: 10px; line-height: 1.5; }
.generated-access > p { margin: 1px 0 0; }
.share-field { min-width: 0; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 6px 10px; align-items: center; border: 1px solid var(--line); border-radius: 10px; padding: 10px; background: rgba(255,255,255,.68); }
.share-field > span { grid-column: 1 / -1; color: var(--muted); font-size: 8px; font-weight: 810; letter-spacing: .1em; text-transform: uppercase; }
.share-field code { min-width: 0; overflow: hidden; color: var(--green); font-size: 10px; font-weight: 730; text-overflow: ellipsis; white-space: nowrap; }
.small-button { min-height: 34px; border: 1px solid var(--line); border-radius: 9px; padding: 0 10px; cursor: pointer; color: var(--ink-soft); background: rgba(255,255,255,.76); font-size: 10px; font-weight: 730; }
.small-button:hover { border-color: rgba(167,122,61,.43); color: var(--green); background: #fff; }
.small-button.accent { border-color: rgba(11,43,35,.16); color: #fff; background: var(--green); }
.small-button.accent:hover { border-color: var(--green-soft); color: #fff; background: var(--green-soft); }
.small-button:disabled { opacity: .45; cursor: default; }
.small-button.danger { color: var(--danger); }
.feedback-admin-section { border-top: 1px solid var(--line); }
.feedback-heading > div { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 9px; }
.feedback-list, .context-list { display: grid; gap: 10px; }
.feedback-item, .context-item { border: 1px solid var(--line); border-radius: 13px; padding: 14px; background: rgba(255,255,255,.58); }
.feedback-item { border-left: 3px solid var(--green-soft); }
.feedback-item.negative { border-left-color: var(--danger); }
.feedback-item-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 9px; }
.feedback-badge { border-radius: 10px; padding: 3px 8px; color: var(--success); background: var(--green-mist); font-size: 8px; font-weight: 840; letter-spacing: .08em; text-transform: uppercase; }
.feedback-item.negative .feedback-badge { color: var(--danger); background: var(--oxblood-mist); }
.feedback-item-head small, .context-item > span { color: var(--muted); font-size: 9px; }
.feedback-item > strong, .context-item > strong { display: block; font: 600 15px/1.4 var(--serif); }
.feedback-item blockquote { margin: 10px 0; border-left: 2px solid var(--brass-light); padding: 2px 0 2px 11px; color: var(--ink-soft); font-size: 12px; line-height: 1.55; }
.feedback-no-note { margin: 7px 0; color: var(--muted); font-size: 10px; font-style: italic; }
.feedback-item details { margin-top: 9px; }
.feedback-item summary { cursor: pointer; color: var(--green-soft); font-size: 10px; font-weight: 730; }
.feedback-detail { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 9px; color: var(--ink-soft); font-size: 12px; line-height: 1.5; }
.feedback-detail p { margin: 0 0 7px; }
.feedback-detail h3 { font-size: 16px; }
.context-dialog { width: min(700px, calc(100% - 32px)); }
.context-explanation { margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.context-item { display: grid; gap: 5px; }
.context-item p { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.4; }
.context-footer { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-top: 18px; border-top: 1px solid var(--line); padding-top: 15px; }
.context-footer span { color: var(--muted); font-size: 10px; line-height: 1.45; }
.empty-state { margin: 0; border: 1px dashed var(--line-strong); border-radius: 12px; padding: 18px; color: var(--muted); font-size: 12px; text-align: center; }

@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 30; inset: 0 auto 0 0; width: min(320px, 89vw); height: var(--app-height, 100dvh); padding: calc(14px + env(safe-area-inset-top)) 14px calc(12px + env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left)); transform: translateX(-104%); transition: transform .24s ease; box-shadow: 24px 0 70px rgba(0,0,0,.28); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop { position: fixed; z-index: 29; inset: 0; height: var(--app-height, 100dvh); background: rgba(4,18,13,.54); backdrop-filter: blur(2px); }
  .close-sidebar, .menu-button, #newChatMobile { display: grid; }
  .close-sidebar:hover { background: rgba(255,255,255,.07); }
  .topbar { min-height: calc(56px + env(safe-area-inset-top)); justify-content: space-between; padding: env(safe-area-inset-top) max(13px, env(safe-area-inset-right)) 0 max(13px, env(safe-area-inset-left)); }
  .service-banner { top: calc(64px + env(safe-area-inset-top)); width: calc(100% - 18px); grid-template-columns: 25px minmax(0,1fr) 32px; }
  .conversation-title span { max-width: 54vw; }
  .welcome-panel { width: calc(100% - 32px); margin-top: clamp(18px, 4vh, 38px); padding: clamp(38px, 6vh, 58px) 32px 46px; }
  .suggestion-grid { grid-template-columns: 1fr; max-width: 610px; }
  .suggestion { min-height: 82px; }
  .source-grid { grid-template-columns: 1fr; }
  .access-form-grid { grid-template-columns: 1fr; }
  .primary-button.compact { justify-content: center; }
  .icon-button, .new-chat-button, .sidebar-action { min-width: 44px; min-height: 44px; }
  .history-item > button:first-child { min-height: 44px; padding-top: 12px; padding-bottom: 12px; }
  .history-delete { width: 40px; height: 40px; opacity: .72; }
  .composer-wrap { padding-right: max(14px, env(safe-area-inset-right)); padding-left: max(14px, env(safe-area-inset-left)); }
  .composer textarea { font-size: 16px; }
  .research-toggle { min-height: 38px; }
  .send-button { width: 44px; height: 44px; }
  .admin-dialog { max-height: calc(var(--app-height, 100dvh) - 20px); overscroll-behavior: contain; }
  .small-button { min-height: 42px; }
}

@media (max-width: 540px) {
  .login-view { place-items: start center; overflow-y: auto; padding: max(13px, env(safe-area-inset-top)) max(13px, env(safe-area-inset-right)) max(13px, env(safe-area-inset-bottom)) max(13px, env(safe-area-inset-left)); }
  .login-card { margin: auto 0; padding: 29px 24px 27px 43px; border-radius: 7px 22px 22px 7px; box-shadow: 0 6px 0 #dfd2bb, 0 9px 0 #a7895e, -12px 20px 46px rgba(0,0,0,.38), inset 0 0 0 4px rgba(224,201,159,.045); }
  .login-card::before { left: 13px; width: 18px; }
  .login-card h1 { font-size: clamp(42px, 12vw, 51px); }
  .login-logo { width: 126px; height: 126px; margin-bottom: 19px; border-radius: 50%; }
  .login-subtitle { margin-top: 10px; font-size: 9px; letter-spacing: .17em; }
  .login-copy { margin: 19px auto 24px; font-size: 14px; }
  .login-form input { min-height: 50px; font-size: 16px; }
  .pwa-install-button { width: 100%; min-height: 48px; }
  .welcome-panel { width: calc(100% - 20px); margin: 10px auto 28px; padding: 34px 18px 34px; border-radius: 7px 15px 15px 7px; }
  .welcome-panel::before { inset: 8px; }
  .welcome-logo-button { width: 92px; height: 92px; margin-bottom: 20px; border-radius: 50%; }
  .welcome-panel h2 { font-size: clamp(36px, 10.5vw, 43px); }
  .welcome-meta { gap: 7px; font-size: 8px; }
  .welcome-panel > p:not(.eyebrow) { margin-top: 16px; font-size: 15px; }
  .suggestion { min-height: 88px; padding: 16px 44px 16px 17px; }
  .messages { width: calc(100% - 22px); padding: 22px 0 52px; }
  .message { grid-template-columns: 32px minmax(0,1fr); gap: 9px; margin-bottom: 23px; }
  .message-avatar { width: 32px; height: 32px; border-radius: 50%; font-size: 10px; }
  .message-content { font-size: 16px; line-height: 1.67; }
  .message.user { grid-template-columns: minmax(0,1fr) 32px; }
  .message.user .message-content { padding: 10px 13px; }
  .progress-card { padding: 14px 13px 12px; }
  .progress-heading strong { white-space: normal; }
  .progress-steps li { font-size: 8px; }
  .progress-footer { align-items: flex-end; }
  .progress-footer > span { display: block; max-width: 72%; line-height: 1.4; }
  .composer-wrap { padding: 7px max(8px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left)); }
  .composer { border-radius: 15px; padding: 10px 9px 8px 13px; }
  .composer-hint { display: none; }
  .admin-dialog { width: calc(100% - 10px); height: calc(var(--app-height, 100dvh) - 10px); max-height: calc(var(--app-height, 100dvh) - 10px); margin: 5px auto; border-radius: 17px; }
  .dialog-header, .create-user-form, .user-section { padding-left: 16px; padding-right: 16px; }
  .dialog-header h2 { font-size: 27px; }
  .user-section-heading { display: grid; gap: 0; }
  .user-section-heading span { margin: -9px 0 13px; text-align: left; }
  .user-row { grid-template-columns: 1fr; }
  .usage-stats { grid-template-columns: 1fr; }
  .access-actions { display: grid; grid-template-columns: 1fr 1fr; justify-content: stretch; }
  .access-actions .small-button { width: 100%; padding: 0 8px; }
  .code-editor { grid-template-columns: 1fr 1fr; }
  .code-editor input { grid-column: 1 / -1; }
  .share-field { grid-template-columns: 1fr; }
  .share-field > span { grid-column: 1; }
  .share-field code { white-space: normal; overflow-wrap: anywhere; }
  .share-field .small-button { justify-self: start; }
  .feedback-row, .context-footer { align-items: stretch; flex-direction: column; }
  .feedback-actions { width: 100%; }
  .feedback-note-toggle { flex: 1; }
  .feedback-heading > div { align-items: flex-start; flex-direction: column; }
  .user-insights { display: grid; }
  .user-insights p { white-space: normal; }
  .install-dialog { padding: 30px 22px 24px; }
  .install-dialog h2 { font-size: 31px; }
  .opening-book { width: min(310px, 76vw); }
  .opening-cover { gap: 13px; padding: 24px; }
  .opening-cover img { width: 96px; height: 96px; }
}

@media (max-width: 370px) {
  .welcome-meta { display: none; }
  .suggestion-grid { gap: 8px; }
  .suggestion { min-height: 72px; }
  .conversation-title small { display: none; }
  .conversation-title span { max-width: 50vw; }
  .research-toggle > span:last-child { font-size: 10px; }
}

@media (max-width: 900px) and (max-height: 500px) and (orientation: landscape) {
  .login-view { place-items: start center; overflow-y: auto; }
  .login-card { margin: 12px 0; padding-top: 22px; padding-bottom: 22px; }
  .login-logo { width: 76px; height: 76px; margin-bottom: 10px; }
  .login-card h1 { font-size: 30px; }
  .login-subtitle { margin-top: 7px; }
  .login-copy { margin: 10px 0 16px; }
  .welcome-panel { margin-top: 10px; padding-top: 24px; }
  .welcome-logo-button { width: 68px; height: 68px; margin-bottom: 10px; }
  .welcome-panel h2 { font-size: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation-duration: .01ms !important; }
}