/* ============ АГАТ ИИ — дизайн-система ============ */
@import url('/fonts/fonts.css');

:root {
  /* поверхности */
  --bg-0: #0d0d10;
  --bg-1: #131316;
  --bg-2: #1a1a1f;
  --bg-3: #222228;
  --bg-4: #2a2a31;
  --border: #26262d;
  --border-strong: #33333b;

  /* текст */
  --text-1: #ededf0;
  --text-2: #a8a8b3;
  --text-3: #71717c;

  /* акцент — тёплая медь */
  --accent: #d97757;
  --accent-strong: #c96442;
  --accent-soft: rgba(217, 119, 87, .14);
  --accent-glow: rgba(217, 119, 87, .35);
  --grad-accent: linear-gradient(135deg, #e08663 0%, #c96442 55%, #a34a2c 100%);

  --ok: #4ade80;
  --danger: #f16a5e;
  --danger-soft: rgba(241, 106, 94, .12);

  --font-body: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-head: 'Manrope', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, monospace;

  --r-s: 8px; --r-m: 12px; --r-l: 16px; --r-xl: 22px;
  --shadow-pop: 0 12px 40px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.3);
  --t-fast: 150ms cubic-bezier(.4,0,.2,1);
  --t-med: 250ms cubic-bezier(.4,0,.2,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: 15px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--accent-soft); }

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

.icon { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-s { width: 15px; height: 15px; }
.icon-l { width: 22px; height: 22px; }

/* ============ каркас ============ */
.app { display: flex; height: 100vh; height: 100dvh; }

/* ============ сайдбар ============ */
.sidebar {
  width: 272px; min-width: 272px;
  background: var(--bg-1);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: margin-left var(--t-med);
  z-index: 30;
}
.sidebar.collapsed { margin-left: -272px; }

.sidebar-head { display: flex; align-items: center; gap: 10px; padding: 16px 16px 12px; }
.logo {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--grad-accent);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
  flex: none;
}
.logo svg { width: 19px; height: 19px; }
.brand { font-family: var(--font-head); font-weight: 800; font-size: 16px; letter-spacing: .02em; }
.brand small { display: block; font-family: var(--font-body); font-weight: 400; font-size: 10.5px; color: var(--text-3); letter-spacing: .08em; text-transform: uppercase; margin-top: 1px; }

.btn-new {
  margin: 6px 14px 10px;
  padding: 11px 14px;
  background: var(--grad-accent);
  border: none; border-radius: var(--r-m);
  color: #fff; font-size: 14px; font-weight: 600;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: filter var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  box-shadow: 0 2px 10px rgba(201,100,66,.25);
}
.btn-new:hover { filter: brightness(1.08); box-shadow: 0 4px 16px var(--accent-glow); }
.btn-new:active { transform: scale(.98); }

.chat-list { flex: 1; overflow-y: auto; padding: 2px 10px 10px; }
.chat-group { margin-top: 14px; }
.chat-group-label {
  font-size: 11px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase;
  color: var(--text-3);
  padding: 0 10px 6px;
}
.chat-item {
  position: relative;
  padding: 9px 10px;
  border-radius: 9px;
  font-size: 13.5px;
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; gap: 8px;
  transition: background var(--t-fast), color var(--t-fast);
  margin-bottom: 1px;
}
.chat-item:hover { background: var(--bg-2); color: var(--text-1); }
.chat-item.active { background: var(--bg-3); color: var(--text-1); }
.chat-item.active::before {
  content: ""; position: absolute; left: 0; top: 22%; bottom: 22%;
  width: 3px; border-radius: 3px; background: var(--accent);
}
.chat-item .title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-item .title input {
  width: 100%; background: var(--bg-4); border: 1px solid var(--border-strong);
  border-radius: 6px; color: var(--text-1); font: inherit; padding: 2px 6px; outline: none;
}
.chat-item .actions { display: none; gap: 2px; }
.chat-item:hover .actions, .chat-item.active .actions { display: flex; }
.icon-btn {
  border: none; background: none; color: var(--text-3);
  padding: 4px; border-radius: 6px; display: flex;
  transition: background var(--t-fast), color var(--t-fast);
}
.icon-btn:hover { background: var(--bg-4); color: var(--text-1); }
.icon-btn.danger:hover { background: var(--danger-soft); color: var(--danger); }

.list-empty { text-align: center; color: var(--text-3); font-size: 13px; padding: 30px 10px; }

.sidebar-foot {
  border-top: 1px solid var(--border);
  padding: 10px;
}
.user-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: var(--r-m);
  width: 100%; border: none; background: none; color: var(--text-1);
  font-size: 13.5px; text-align: left;
  transition: background var(--t-fast);
}
.user-row:hover { background: var(--bg-2); }
.user-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--bg-4); color: var(--text-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 600; text-transform: uppercase;
}
.user-row .user-name { flex: 1; }
.user-row .icon { color: var(--text-3); }

/* ============ основная область ============ */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; position: relative; }
.topbar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(13,13,16,.8);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.topbar .spacer { flex: 1; }

/* --- выпадающий выбор модели --- */
.model-picker { position: relative; }
.model-trigger {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  color: var(--text-1); font-size: 13.5px; font-weight: 500;
  transition: background var(--t-fast), border-color var(--t-fast);
  max-width: 300px;
}
.model-trigger:hover { background: var(--bg-3); border-color: var(--border-strong); }
.model-trigger .name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.model-trigger .chev { color: var(--text-3); transition: transform var(--t-fast); }
.model-picker.open .chev { transform: rotate(180deg); }
.model-menu {
  position: absolute; top: calc(100% + 6px); left: 0;
  min-width: 320px; max-height: 62vh; overflow-y: auto;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-pop);
  padding: 6px;
  opacity: 0; transform: translateY(-6px) scale(.98); pointer-events: none;
  transition: opacity var(--t-fast), transform var(--t-fast);
  z-index: 50;
}
.model-picker.open .model-menu { opacity: 1; transform: none; pointer-events: auto; }
.model-option {
  width: 100%; border: none; background: none; text-align: left;
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 10px;
  color: var(--text-1);
  transition: background var(--t-fast);
}
.model-option:hover { background: var(--bg-3); }
.model-option .info { flex: 1; min-width: 0; }
.model-option .m-name { font-size: 13.5px; font-weight: 600; }
.model-option .m-desc { font-size: 12px; color: var(--text-3); margin-top: 1px; }
.model-option .check { color: var(--accent); visibility: hidden; }
.model-option.selected .check { visibility: visible; }
.badge {
  font-size: 10.5px; font-weight: 600; letter-spacing: .03em;
  padding: 2px 7px; border-radius: 999px; white-space: nowrap;
}
.badge.fast { background: rgba(74,222,128,.12); color: #6ee7a0; }
.badge.smart { background: var(--accent-soft); color: var(--accent); }
.badge.heavy { background: rgba(148,163,184,.12); color: #a3b0c2; }

/* ============ сообщения ============ */
.messages { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.messages-inner { max-width: 800px; margin: 0 auto; padding: 28px 22px 12px; }

.msg { display: flex; gap: 14px; margin-bottom: 30px; animation: msg-in .28s cubic-bezier(.21,1.02,.73,1) both; }
@keyframes msg-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.msg .avatar {
  width: 32px; height: 32px; min-width: 32px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 700; color: #fff;
  margin-top: 2px;
}
.msg.user { flex-direction: row-reverse; }
.msg.user .avatar { background: var(--bg-4); color: var(--text-2); }
.msg.assistant .avatar { background: var(--grad-accent); box-shadow: 0 2px 10px rgba(201,100,66,.3); }
.msg.assistant .avatar svg { width: 17px; height: 17px; }

.msg .body { min-width: 0; max-width: 100%; flex: 1; }
.msg.user .body { display: flex; flex-direction: column; align-items: flex-end; }
.msg.user .bubble {
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 11px 16px;
  border-radius: var(--r-l) var(--r-s) var(--r-l) var(--r-l);
  white-space: pre-wrap; word-break: break-word;
  max-width: 90%;
  line-height: 1.6;
}
.msg.assistant .bubble { line-height: 1.7; padding-top: 4px; }

.msg .meta {
  display: flex; gap: 4px; margin-top: 6px;
  opacity: 0; transition: opacity var(--t-fast);
}
.msg:hover .meta { opacity: 1; }
.meta .icon-btn { padding: 5px; }
.meta .model-tag { font-size: 11px; color: var(--text-3); align-self: center; margin-left: 6px; }

/* стриминговый курсор */
.caret {
  display: inline-block; width: 8px; height: 17px;
  background: var(--accent); border-radius: 2px;
  vertical-align: -3px; margin-left: 2px;
  animation: caret-blink 1s steps(2) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

.thinking { display: flex; align-items: center; gap: 10px; color: var(--text-3); font-size: 13.5px; padding: 6px 0; }
.pulse-dots { display: flex; gap: 4px; }
.pulse-dots span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  animation: pulse 1.2s ease-in-out infinite;
}
.pulse-dots span:nth-child(2) { animation-delay: .15s; }
.pulse-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes pulse { 0%, 100% { opacity: .25; transform: scale(.85); } 40% { opacity: 1; transform: scale(1); } }

/* ---------- markdown ---------- */
.bubble p { margin: 0 0 13px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble h1, .bubble h2, .bubble h3, .bubble h4 { font-family: var(--font-head); margin: 18px 0 9px; line-height: 1.35; }
.bubble h1 { font-size: 1.25em; } .bubble h2 { font-size: 1.15em; } .bubble h3 { font-size: 1.05em; }
.bubble ul, .bubble ol { margin: 0 0 13px 22px; }
.bubble li { margin-bottom: 5px; }
.bubble li::marker { color: var(--accent); }
.bubble strong { color: #fff; }
.bubble code {
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 1.5px 6px; border-radius: 6px;
  font-family: var(--font-mono); font-size: 12.5px;
}
.bubble pre {
  background: #0a0a0d;
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  margin: 0 0 14px;
  overflow: hidden;
}
.bubble pre .pre-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 12px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  font-size: 11.5px; color: var(--text-3);
  font-family: var(--font-mono);
}
.bubble pre .pre-head button {
  border: none; background: none; color: var(--text-3);
  font-size: 11.5px; display: flex; align-items: center; gap: 5px;
  padding: 2px 6px; border-radius: 5px;
  transition: color var(--t-fast), background var(--t-fast);
  font-family: var(--font-body);
}
.bubble pre .pre-head button:hover { color: var(--text-1); background: var(--bg-4); }
.bubble pre code {
  display: block; padding: 13px 15px; overflow-x: auto;
  background: none; border: none;
  font-size: 13px; line-height: 1.6;
}
.bubble blockquote {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  padding: 8px 14px; margin: 0 0 13px;
  color: var(--text-2);
}
.bubble table { border-collapse: collapse; margin: 0 0 14px; max-width: 100%; display: block; overflow-x: auto; }
.bubble th, .bubble td { border: 1px solid var(--border-strong); padding: 7px 12px; font-size: 13.5px; }
.bubble th { background: var(--bg-2); font-weight: 600; }
.bubble a { color: var(--accent); text-decoration-color: var(--accent-glow); }
.bubble hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* ============ приветствие ============ */
.welcome {
  height: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px;
  padding: 20px 22px 8vh;
}
.welcome .big-logo {
  width: 60px; height: 60px; border-radius: 18px;
  background: var(--grad-accent);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 8px 32px var(--accent-glow);
  animation: float 5s ease-in-out infinite;
  margin-bottom: 6px;
}
.welcome .big-logo svg { width: 30px; height: 30px; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
.welcome h2 { font-family: var(--font-head); font-size: 26px; font-weight: 800; letter-spacing: -.01em; }
.welcome .sub { color: var(--text-3); font-size: 14.5px; margin-bottom: 18px; }
.suggestions {
  display: grid; grid-template-columns: repeat(2, minmax(0, 260px));
  gap: 10px; width: 100%; max-width: 540px;
}
.suggestion {
  border: 1px solid var(--border);
  background: var(--bg-1);
  border-radius: var(--r-l);
  padding: 14px 16px;
  text-align: left;
  display: flex; flex-direction: column; gap: 4px;
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.suggestion:hover { background: var(--bg-2); border-color: var(--border-strong); transform: translateY(-2px); }
.suggestion .s-icon { color: var(--accent); margin-bottom: 3px; }
.suggestion .s-title { font-size: 13.5px; font-weight: 600; color: var(--text-1); }
.suggestion .s-sub { font-size: 12px; color: var(--text-3); }

/* ============ композер ============ */
.input-area { padding: 8px 22px 16px; }
.input-box {
  max-width: 800px; margin: 0 auto;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  display: flex; align-items: flex-end; gap: 8px;
  padding: 12px 12px 12px 20px;
  transition: border-color var(--t-fast), box-shadow var(--t-med);
}
.input-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 4px 24px rgba(0,0,0,.3);
}
textarea#prompt {
  flex: 1;
  background: none; border: none; outline: none; resize: none;
  color: var(--text-1);
  font-family: inherit; font-size: 15px; line-height: 1.55;
  max-height: 220px;
  padding: 5px 0;
}
textarea#prompt::placeholder { color: var(--text-3); }
.btn-send {
  width: 38px; height: 38px; min-width: 38px;
  border: none; border-radius: 12px;
  background: var(--grad-accent);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  transition: filter var(--t-fast), transform var(--t-fast), background var(--t-fast);
}
.btn-send:hover:not(:disabled) { filter: brightness(1.1); }
.btn-send:active { transform: scale(.94); }
.btn-send:disabled { background: var(--bg-4); color: var(--text-3); cursor: default; }
.btn-send.stop { background: var(--danger); }
.hint { max-width: 800px; margin: 8px auto 0; text-align: center; font-size: 11.5px; color: var(--text-3); }
.hint kbd {
  font-family: var(--font-mono); font-size: 10px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 5px;
}

/* ============ модалки ============ */
.overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-med);
}
.overlay.show { opacity: 1; pointer-events: auto; }
.modal {
  width: min(440px, calc(100vw - 32px));
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-pop);
  transform: translateY(14px) scale(.97);
  transition: transform var(--t-med);
  max-height: 86vh; overflow-y: auto;
}
.overlay.show .modal { transform: none; }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px 0;
}
.modal-head h3 { font-family: var(--font-head); font-size: 17px; font-weight: 700; }
.modal-body { padding: 16px 22px 22px; }
.modal-section { margin-bottom: 20px; }
.modal-section:last-child { margin-bottom: 0; }
.modal-section h4 {
  font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 10px;
}
.field { margin-bottom: 10px; position: relative; }
.field label { display: block; font-size: 12.5px; color: var(--text-2); margin-bottom: 5px; }
.field input {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 40px 10px 13px;
  color: var(--text-1); font-size: 14px; font-family: inherit;
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field .toggle-eye {
  position: absolute; right: 6px; bottom: 5px;
  border: none; background: none; color: var(--text-3);
  padding: 6px; border-radius: 7px; display: flex;
}
.field .toggle-eye:hover { color: var(--text-1); }
.form-msg { font-size: 13px; min-height: 18px; margin: 4px 0 8px; }
.form-msg.err { color: var(--danger); }
.form-msg.ok { color: var(--ok); }

.btn {
  border: none; border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 7px;
  transition: filter var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--grad-accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:disabled { filter: grayscale(.5) brightness(.7); cursor: default; }
.btn-ghost { background: var(--bg-3); color: var(--text-1); }
.btn-ghost:hover { background: var(--bg-4); }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-danger:hover { background: rgba(241,106,94,.22); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }

/* confirm */
.confirm-text { color: var(--text-2); font-size: 14px; line-height: 1.55; padding-top: 4px; }

/* ============ тосты ============ */
.toasts {
  position: fixed; top: 16px; right: 16px; z-index: 200;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-m);
  box-shadow: var(--shadow-pop);
  padding: 11px 16px;
  font-size: 13.5px;
  display: flex; align-items: center; gap: 9px;
  animation: toast-in .25s cubic-bezier(.21,1.02,.73,1) both;
  max-width: 340px;
}
.toast.err { border-left-color: var(--danger); }
.toast.ok { border-left-color: var(--ok); }
.toast.out { animation: toast-out .2s ease-in both; }
@keyframes toast-in { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateX(30px); } }

/* ============ логин ============ */
.login-body { overflow: auto; }
.login-wrap {
  min-height: 100vh; min-height: 100dvh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  position: relative;
  background:
    radial-gradient(ellipse 55% 45% at 22% 8%, rgba(201,100,66,.14), transparent 62%),
    radial-gradient(ellipse 45% 40% at 82% 90%, rgba(201,100,66,.09), transparent 60%),
    var(--bg-0);
}
.login-card {
  width: min(392px, 100%);
  background: rgba(19,19,22,.85);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  padding: 38px 34px 34px;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-pop);
  animation: card-in .4s cubic-bezier(.21,1.02,.73,1) both;
}
@keyframes card-in { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }
.login-card .logo { width: 52px; height: 52px; border-radius: 15px; margin: 0 auto 14px; box-shadow: 0 6px 28px var(--accent-glow); }
.login-card .logo svg { width: 26px; height: 26px; }
.login-card h1 { font-family: var(--font-head); font-size: 21px; font-weight: 800; text-align: center; }
.login-card .sub { text-align: center; color: var(--text-3); font-size: 13px; margin: 4px 0 22px; }
.login-card .field { margin-bottom: 12px; }
.login-card .btn-primary { width: 100%; justify-content: center; padding: 12px; margin-top: 6px; font-size: 14.5px; }
.login-error { color: var(--danger); font-size: 13px; text-align: center; min-height: 18px; margin-bottom: 4px; }
.login-card.shake { animation: shake .4s; }
@keyframes shake {
  10%, 90% { transform: translateX(-2px); } 20%, 80% { transform: translateX(3px); }
  30%, 70% { transform: translateX(-5px); } 40%, 60% { transform: translateX(5px); } 50% { transform: translateX(-4px); }
}

/* ============ скроллбары ============ */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 5px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: #3d3d46; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

/* ============ мобильные ============ */
.backdrop {
  position: fixed; inset: 0; z-index: 25;
  background: rgba(0,0,0,.5);
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-med);
}
@media (max-width: 760px) {
  .sidebar { position: fixed; height: 100%; left: 0; top: 0; box-shadow: var(--shadow-pop); }
  .sidebar.collapsed { margin-left: 0; transform: translateX(-100%); box-shadow: none; }
  .sidebar { transform: translateX(0); transition: transform var(--t-med); margin-left: 0; }
  body.sidebar-open .backdrop { opacity: 1; pointer-events: auto; }
  .suggestions { grid-template-columns: 1fr; max-width: 340px; }
  .messages-inner { padding: 20px 14px 8px; }
  .input-area { padding: 6px 12px 12px; }
  .msg { gap: 10px; margin-bottom: 24px; }
  .hint .desktop-only { display: none; }
}

/* ============ тумблеры настроек ============ */
.switch-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 2px; cursor: pointer;
}
.switch-row + .switch-row { border-top: 1px solid var(--border); }
.switch-info { display: flex; align-items: center; gap: 11px; color: var(--accent); }
.switch-info span { display: flex; flex-direction: column; gap: 1px; }
.switch-info b { font-size: 13.5px; font-weight: 600; color: var(--text-1); }
.switch-info small { font-size: 12px; color: var(--text-3); }
.switch { position: relative; display: inline-block; width: 42px; height: 24px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .knob {
  position: absolute; inset: 0;
  background: var(--bg-4); border-radius: 999px;
  transition: background var(--t-fast);
}
.switch .knob::before {
  content: ""; position: absolute; width: 18px; height: 18px;
  left: 3px; top: 3px; border-radius: 50%;
  background: var(--text-2);
  transition: transform var(--t-fast), background var(--t-fast);
}
.switch input:checked + .knob { background: var(--accent); }
.switch input:checked + .knob::before { transform: translateX(18px); background: #fff; }
.switch input:focus-visible + .knob { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ============ вложения в композере ============ */
.attachments {
  max-width: 800px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 0 4px;
}
.attachments:not(:empty) { margin-bottom: 8px; }
.att-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-2); border: 1px solid var(--border-strong);
  border-radius: 10px; padding: 6px 8px 6px 10px;
  font-size: 12.5px; color: var(--text-2);
  max-width: 240px;
  animation: msg-in .2s ease both;
}
.att-chip .a-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.att-chip .a-size { color: var(--text-3); font-size: 11px; flex: none; }
.att-chip img { width: 30px; height: 30px; object-fit: cover; border-radius: 6px; flex: none; }
.att-chip .icon { color: var(--accent); }
.att-chip .rm { border: none; background: none; color: var(--text-3); padding: 2px; display: flex; border-radius: 5px; flex: none; }
.att-chip .rm:hover { color: var(--danger); background: var(--danger-soft); }
.icon-btn.attach { padding: 8px; margin-bottom: 1px; }

/* вложения в сообщении пользователя */
.msg-atts { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; margin-bottom: 6px; }
.msg-atts img {
  max-width: 200px; max-height: 160px; border-radius: 10px;
  border: 1px solid var(--border-strong); cursor: zoom-in;
}
.msg-atts .file-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg-2); border: 1px solid var(--border-strong);
  border-radius: 8px; padding: 5px 10px; font-size: 12px; color: var(--text-2);
}
.msg-atts .file-tag .icon { color: var(--accent); }

/* ============ статистика генерации ============ */
.msg-stats {
  display: flex; flex-wrap: wrap; align-items: center; gap: 5px 12px;
  margin-top: 8px;
  font-size: 11.5px; color: var(--text-3);
  font-family: var(--font-mono);
}
.msg-stats .stat { display: inline-flex; align-items: center; gap: 4px; }
.msg-stats .icon { width: 12px; height: 12px; }
.msg-stats .ctx-bar {
  width: 54px; height: 5px; border-radius: 3px;
  background: var(--bg-3); overflow: hidden; display: inline-block;
}
.msg-stats .ctx-bar i {
  display: block; height: 100%; border-radius: 3px;
  background: var(--accent);
}
.msg-stats .ctx-bar i.warn { background: var(--danger); }

/* ============ размышления модели ============ */
details.think {
  margin: 0 0 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-1);
  overflow: hidden;
}
details.think summary {
  cursor: pointer; list-style: none;
  padding: 8px 13px;
  font-size: 12.5px; color: var(--text-3);
  display: flex; align-items: center; gap: 7px;
  user-select: none;
}
details.think summary::-webkit-details-marker { display: none; }
details.think summary:hover { color: var(--text-2); background: var(--bg-2); }
details.think[open] summary { border-bottom: 1px solid var(--border); }
details.think .think-body {
  padding: 10px 14px; font-size: 13px; color: var(--text-3);
  line-height: 1.6; white-space: pre-wrap; max-height: 260px; overflow-y: auto;
}

/* ============ статусы инструментов ============ */
.tool-log { display: flex; flex-direction: column; gap: 6px; margin: 0 0 12px; }
.tool-step {
  display: flex; align-items: center; gap: 9px;
  background: var(--bg-1); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 12px;
  font-size: 12.5px; color: var(--text-2);
  animation: msg-in .2s ease both;
}
.tool-step .icon { color: var(--accent); }
.tool-step .t-q { color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 380px; }
.tool-step .t-done { margin-left: auto; color: var(--ok); }
.tool-step.pending .t-done { color: var(--text-3); }

/* ============ голосовой ввод ============ */
.icon-btn.mic { padding: 8px; margin-bottom: 1px; }
.icon-btn.mic.recording { color: #fff; background: var(--danger); animation: rec-pulse 1.2s ease-in-out infinite; }
.icon-btn.mic.busy { color: var(--accent); pointer-events: none; opacity: .7; }
@keyframes rec-pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(241,106,94,.5);} 50% { box-shadow: 0 0 0 7px rgba(241,106,94,0);} }

/* ============ база знаний ============ */
.kb-hint { font-size: 12.5px; color: var(--text-3); line-height: 1.5; margin-bottom: 10px; }
.kb-list { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.kb-row {
  display: flex; align-items: center; gap: 9px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 9px; padding: 7px 10px; font-size: 13px;
}
.kb-row .icon { color: var(--accent); }
.kb-row .kb-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kb-row .kb-meta { color: var(--text-3); font-size: 11.5px; flex: none; }
.kb-empty { color: var(--text-3); font-size: 13px; padding: 6px 2px; }
.kb-status { font-size: 12.5px; color: var(--accent); margin-left: 10px; }

/* ============ HTML-предпросмотр ============ */
.preview-modal { width: min(960px, calc(100vw - 32px)); height: min(80vh, 760px); display: flex; flex-direction: column; }
.preview-frame-wrap { flex: 1; padding: 14px 18px 18px; min-height: 0; }
#previewFrame {
  width: 100%; height: 100%;
  border: 1px solid var(--border-strong); border-radius: 10px;
  background: #fff;
}
.pre-actions { display: flex; gap: 4px; align-items: center; }
.pre-actions .pv { color: var(--accent) !important; }