/* ENGE — чат. Два слоя: задний — чертёжный стол (сетка, оси, лист), передний — листы с тенью и уголками. */
@font-face { font-family: 'IBM Plex Sans'; font-weight: 300 600; font-display: swap; src: url(/fonts/ibm-plex-sans-cyrillic.woff2) format('woff2'); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: 'IBM Plex Sans'; font-weight: 300 600; font-display: swap; src: url(/fonts/ibm-plex-sans-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215; }
@font-face { font-family: 'IBM Plex Mono'; font-weight: 400; font-display: swap; src: url(/fonts/ibm-plex-mono-cyrillic.woff2) format('woff2'); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: 'IBM Plex Mono'; font-weight: 400; font-display: swap; src: url(/fonts/ibm-plex-mono-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215; }
@font-face { font-family: 'Unbounded'; font-weight: 300 700; font-display: swap; src: url(/fonts/unbounded-cyrillic.woff2) format('woff2'); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: 'Unbounded'; font-weight: 300 700; font-display: swap; src: url(/fonts/unbounded-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215; }

:root {
  --bg: #07080a; --sheet: rgba(13, 15, 18, .84); --sheet-2: rgba(18, 21, 25, .92); --me: #14181d;
  --line: rgba(236, 238, 235, .07); --line2: rgba(236, 238, 235, .14); --line3: rgba(236, 238, 235, .28);
  --ink: #eceeeb; --dim: #9aa0a6; --faint: #5d646b;
  --acc: #d97757; --acc-ink: #160b06; --acc-glow: rgba(217, 119, 87, .14); --err: #ef6b5b;
  --shadow: 0 1px 0 rgba(255, 255, 255, .04) inset, 0 18px 50px -12px rgba(0, 0, 0, .7), 0 2px 6px rgba(0, 0, 0, .4);
  --display: "Unbounded", "Segoe UI", system-ui, sans-serif;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", "Cascadia Code", Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--ink); font: 400 15px/1.6 var(--sans); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
::selection { background: rgba(217, 119, 87, .32); color: #fff; }
[hidden] { display: none !important; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 1px solid var(--acc); outline-offset: 2px; }
svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.sprite { position: absolute; width: 0; height: 0; }

/* ---------- задний слой: стол ---------- */
.backdrop { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
  background:
    radial-gradient(900px 600px at 88% -10%, var(--acc-glow), transparent 60%),
    radial-gradient(120% 90% at 50% 120%, rgba(0, 0, 0, .7), transparent 60%),
    linear-gradient(rgba(236, 238, 235, .055) 1px, transparent 1px) 0 0 / 120px 120px,
    linear-gradient(90deg, rgba(236, 238, 235, .055) 1px, transparent 1px) 0 0 / 120px 120px,
    linear-gradient(rgba(236, 238, 235, .025) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(236, 238, 235, .025) 1px, transparent 1px) 0 0 / 24px 24px,
    var(--bg); }
.backdrop .plan { position: absolute; inset: -4%; width: 108%; height: 108%; color: rgba(236, 238, 235, .07); stroke-width: 1; animation: drift 60s ease-in-out infinite alternate; }
@keyframes drift { to { transform: translate3d(-2%, 1.5%, 0); } }

/* ---------- уголки листа ---------- */
.login-card, .msg.claude .body, .box { position: relative; }
.login-card::before, .login-card::after, .login-card > .c1, .login-card > .c2,
.box::before, .box::after { content: ""; position: absolute; width: 9px; height: 9px; border: 0 solid var(--acc); pointer-events: none; }
.login-card::before, .box::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.login-card::after, .box::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }
.login-card > .c1 { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.login-card > .c2 { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }

/* ---------- вход ---------- */
.login { position: relative; z-index: 1; min-height: 100%; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(360px, 100%); display: grid; gap: 10px; padding: 32px 28px 26px; background: var(--sheet); border: 1px solid var(--line2); box-shadow: var(--shadow); backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2); animation: rise .5s cubic-bezier(.2, .7, .2, 1) both; }
.login-card .mark { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; color: var(--ink); }
.login-card .mark svg { width: 38px; height: 38px; }
.word { font: 600 17px/1 var(--display); letter-spacing: .08em; }
.word sup, .brand sup { margin-left: 3px; font: 500 9px/1 var(--mono); letter-spacing: .1em; color: var(--acc); vertical-align: 9px; }
.login-card input { height: 44px; padding: 0 14px; background: rgba(0, 0, 0, .35); border: 1px solid var(--line2); border-radius: 0; outline: none; transition: border-color .15s; }
.login-card input:focus { border-color: var(--acc); }
.login-card input::placeholder { color: var(--faint); }
.login-card button { height: 44px; margin-top: 8px; border: 1px solid var(--acc); background: var(--acc); color: var(--acc-ink); font-weight: 600; letter-spacing: .06em; transition: background .15s, color .15s; }
.login-card button:hover { background: transparent; color: var(--acc); }
.err { min-height: 1.4em; color: var(--err); font-size: 13px; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }

/* ---------- каркас: передний слой ---------- */
.app { position: relative; z-index: 1; height: 100dvh; display: grid; grid-template-columns: 284px 1fr; }
.side { position: relative; z-index: 2; display: flex; flex-direction: column; min-height: 0; background: var(--sheet); border-right: 1px solid var(--line2); box-shadow: 18px 0 48px -18px rgba(0, 0, 0, .75); backdrop-filter: blur(16px) saturate(1.2); -webkit-backdrop-filter: blur(16px) saturate(1.2); }
.brand { display: flex; align-items: center; gap: 11px; height: 60px; padding: 0 18px; border-bottom: 1px solid var(--line); color: var(--ink); }
.brand svg { width: 26px; height: 26px; }
.brand sup { margin-left: -8px; }
.new { position: relative; display: flex; align-items: center; gap: 10px; margin: 16px 14px 10px; height: 42px; padding: 0 14px; background: var(--acc); border: 1px solid var(--acc); color: var(--acc-ink); font-weight: 600; letter-spacing: .03em; text-align: left; transition: background .15s, color .15s; }
.new:hover { background: transparent; color: var(--acc); }
.new svg { stroke-width: 2; }
.list { flex: 1; overflow-y: auto; padding: 4px 8px 12px; scrollbar-width: thin; scrollbar-color: var(--line2) transparent; }
.chat { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 8px; width: 100%; padding: 10px 12px; border: 0; border-left: 2px solid transparent; background: none; text-align: left; color: var(--dim); transition: background .12s, color .12s; }
.chat:hover { color: var(--ink); background: rgba(255, 255, 255, .03); }
.chat.on { color: var(--ink); background: linear-gradient(90deg, rgba(217, 119, 87, .1), rgba(217, 119, 87, 0) 70%); border-left-color: var(--acc); }
.chat .t { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 14px; }
.chat .d { font: 11px var(--mono); color: var(--faint); font-variant-numeric: tabular-nums; }
.chat .w { width: 6px; height: 6px; background: var(--acc); box-shadow: 0 0 10px var(--acc); animation: pulse 1.4s ease-in-out infinite; }
.side-foot { display: grid; gap: 2px; padding: 10px 8px 14px; border-top: 1px solid var(--line); }
.ghost { height: 34px; padding: 0 10px; border: 0; background: none; color: var(--dim); text-align: left; font-size: 13px; }
.ghost:hover { color: var(--ink); }
#clearAll:hover { color: var(--err); }

.main { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.top { position: relative; z-index: 2; display: flex; align-items: center; gap: 10px; height: 60px; padding: 0 22px; border-bottom: 1px solid var(--line); background: rgba(7, 8, 10, .55); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.top h1 { flex: 1; margin: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
.icon { display: grid; place-items: center; width: 36px; height: 36px; border: 0; background: none; color: var(--dim); cursor: pointer; }
.icon:hover { color: var(--ink); }
#delChat:hover { color: var(--err); }
.only-mobile { display: none; }

/* ---------- переписка ---------- */
.msgs { flex: 1; overflow-y: auto; padding: 32px 22px 14px; scroll-behavior: smooth; scrollbar-width: thin; scrollbar-color: var(--line2) transparent; }
.msgs > * { max-width: 840px; margin-left: auto; margin-right: auto; }
.empty { height: 100%; display: grid; place-items: center; color: var(--line2); }
.empty svg { width: 96px; height: 96px; opacity: .55; }
.msg { display: flex; flex-direction: column; margin-bottom: 24px; animation: rise .35s cubic-bezier(.2, .7, .2, 1) both; }
.msg.user { align-items: flex-end; }
.msg .body { max-width: 86%; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.user .body { padding: 11px 15px; background: var(--me); border: 1px solid var(--line2); box-shadow: 0 8px 24px -10px rgba(0, 0, 0, .6); }
.msg.claude .body { max-width: 100%; padding: 16px 20px 16px 22px; background: var(--sheet-2); border: 1px solid var(--line2); box-shadow: var(--shadow); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.msg.claude .body::before { content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 2px; background: var(--acc); }
.msg.claude .body::after { content: ""; position: absolute; right: -1px; top: -1px; width: 9px; height: 9px; border-top: 2px solid var(--acc); border-right: 2px solid var(--acc); }
.msg .meta { margin-top: 7px; font: 11px var(--mono); color: var(--faint); font-variant-numeric: tabular-nums; }
.msg pre { margin: 10px 0; padding: 12px 14px; overflow-x: auto; background: rgba(0, 0, 0, .45); border: 1px solid var(--line); font: 13px/1.5 var(--mono); white-space: pre; }
.msg a { color: var(--acc); text-underline-offset: 3px; }
.files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.msg.user .files { justify-content: flex-end; }
.file { display: inline-flex; align-items: center; gap: 10px; max-width: 100%; padding: 9px 13px; border: 1px solid var(--line2); background: rgba(0, 0, 0, .35); color: var(--ink); text-decoration: none; transition: border-color .15s, background .15s; }
.file:hover { border-color: var(--acc); background: rgba(217, 119, 87, .08); }
.msg.claude .file { border-color: rgba(217, 119, 87, .55); }
.file .n { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; max-width: 280px; font-size: 13px; }
.file .s { font: 11px var(--mono); color: var(--faint); }
.file svg { flex: none; color: var(--acc); }
.typing { display: flex; gap: 5px; width: max-content; padding: 12px 16px; background: var(--sheet-2); border: 1px solid var(--line2); border-left: 2px solid var(--acc); }
.typing i { width: 5px; height: 5px; background: var(--acc); animation: pulse 1.2s ease-in-out infinite; }
.typing i:nth-child(2) { animation-delay: .15s; } .typing i:nth-child(3) { animation-delay: .3s; }
@keyframes pulse { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }

/* ---------- ввод ---------- */
.composer { position: relative; z-index: 2; padding: 10px 22px max(20px, env(safe-area-inset-bottom)); }
.composer > * { max-width: 840px; margin: 0 auto; }
.pending { display: flex; flex-wrap: wrap; gap: 6px; }
.pending:not(:empty) { margin-bottom: 8px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 5px 6px 5px 10px; border: 1px solid var(--line2); background: var(--sheet-2); font-size: 12px; }
.chip .n { max-width: 220px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.chip .p { font: 11px var(--mono); color: var(--faint); }
.chip.bad { border-color: var(--err); color: var(--err); }
.chip button { width: 20px; height: 20px; padding: 0; border: 0; background: none; color: var(--dim); }
.chip button:hover { color: var(--ink); }
.box { display: flex; align-items: flex-end; gap: 6px; padding: 7px; background: var(--sheet-2); border: 1px solid var(--line2); box-shadow: var(--shadow); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); transition: border-color .15s; }
.box:focus-within { border-color: var(--line3); }
.box textarea { flex: 1; min-height: 36px; max-height: 40vh; padding: 7px 4px; border: 0; outline: none; resize: none; background: none; line-height: 1.5; }
.box textarea::placeholder { color: var(--faint); }
.send { display: grid; place-items: center; width: 38px; height: 38px; border: 0; background: var(--acc); color: var(--acc-ink); transition: transform .12s, background .15s; }
.send:not(:disabled):hover { transform: translateY(-1px); }
.send:disabled { background: var(--line2); color: var(--faint); cursor: default; }
.send svg { stroke-width: 2; }
.drop { position: absolute; inset: 0; z-index: 5; display: none; place-items: center; background: rgba(7, 8, 10, .82); backdrop-filter: blur(6px); pointer-events: none; }
.drop div { padding: 44px 68px; border: 1px dashed var(--acc); color: var(--acc); font: 13px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.drop.on { display: grid; }
.scrim { display: none; }

@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .side { position: fixed; z-index: 20; inset: 0 auto 0 0; width: min(300px, 84vw); background: var(--sheet-2); transform: translateX(-100%); transition: transform .22s cubic-bezier(.2, .7, .2, 1); }
  .app.menu .side { transform: none; }
  .app.menu .scrim { display: block; position: fixed; z-index: 10; inset: 0; background: rgba(0, 0, 0, .6); }
  .only-mobile { display: grid; }
  .top { padding: 0 10px; }
  .msgs { padding: 20px 14px 8px; }
  .composer { padding-left: 12px; padding-right: 12px; }
  .msg .body { max-width: 94%; }
  .msg.claude .body { padding: 14px 15px 14px 17px; }
  .file .n { max-width: 180px; }
}
@media (prefers-reduced-motion: reduce) { .backdrop .plan, .msg, .login-card { animation: none; } }
.msg.draft { margin-bottom: 8px; }

.pick { display: grid; grid-template-columns: 1fr 1fr; margin: 0 14px 10px; border: 1px solid var(--line2); }
.pick button { height: 30px; border: 0; background: none; color: var(--dim); font-size: 12px; letter-spacing: .04em; }
.pick button + button { border-left: 1px solid var(--line2); }
.pick button:hover { color: var(--ink); }
.pick button.on { background: rgba(255, 255, 255, .04); color: var(--ink); box-shadow: inset 0 -2px 0 var(--acc); }
.tag { margin-right: 6px; padding: 0 4px; border: 1px solid var(--line2); font: 600 10px var(--mono); color: var(--dim); vertical-align: 1px; }
.who { font: 11px var(--mono); color: var(--acc); letter-spacing: .06em; text-transform: uppercase; }
.me { margin-left: 6px; font: 11px var(--mono); color: var(--faint); }

/* вход через Telegram */

.login-card .tg { text-decoration: none; display: flex; align-items: center; justify-content: center; gap: 10px; height: 46px; margin-top: 0; border: 1px solid var(--acc); background: var(--acc); color: var(--acc-ink); font-weight: 600; letter-spacing: .05em; transition: background .15s, color .15s; }
.login-card .tg:hover { background: transparent; color: var(--acc); }
.login-card .tg svg { stroke-width: 1.8; }
.sep { height: 1px; margin: 8px 0; background: var(--line2); }

/* «Вставить» на странице входа */
.login-card .paste { display: flex; align-items: center; justify-content: center; gap: 10px; height: 44px; margin-top: 0; border: 1px solid var(--line3); background: transparent; color: var(--ink); font-weight: 600; letter-spacing: .05em; transition: border-color .15s, color .15s, background .15s; }
.login-card .paste:hover { border-color: var(--acc); color: var(--acc); background: transparent; }
.login-card .paste svg { stroke-width: 1.6; }

/* ---------- телефон: приложение (PWA) ---------- */
html { -webkit-text-size-adjust: 100%; }
body { overscroll-behavior: none; -webkit-tap-highlight-color: transparent; }
button, a, input, textarea, label { touch-action: manipulation; }
.top { padding-top: env(safe-area-inset-top); height: calc(60px + env(safe-area-inset-top)); }
.brand { padding-top: env(safe-area-inset-top); height: calc(60px + env(safe-area-inset-top)); }
.login { padding-top: max(16px, env(safe-area-inset-top)); padding-bottom: max(16px, env(safe-area-inset-bottom)); }
.side { padding-bottom: env(safe-area-inset-bottom); }
@media (max-width: 760px) {
  input, textarea { font-size: 16px; } /* iPhone не приближает страницу при вводе */
  .icon { width: 44px; height: 44px; }
  .send { width: 44px; height: 44px; }
  .box textarea { min-height: 44px; }
  .new, .login-card input, .login-card button, .login-card .tg { min-height: 48px; }
  .chat { padding: 13px 12px; }
  .ghost { min-height: 44px; }
  .msgs { padding-left: max(14px, env(safe-area-inset-left)); padding-right: max(14px, env(safe-area-inset-right)); }
}
/* предложение установить */
.install { position: fixed; z-index: 30; left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); display: flex; align-items: center; gap: 12px; padding: 10px 10px 10px 14px; background: var(--sheet-2); border: 1px solid var(--line3); box-shadow: var(--shadow); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); animation: rise .35s cubic-bezier(.2, .7, .2, 1) both; }
.install > svg { width: 30px; height: 30px; color: var(--ink); flex: none; }
.install #installBtn { flex: 1; height: 44px; border: 1px solid var(--acc); background: var(--acc); color: var(--acc-ink); font-weight: 600; letter-spacing: .05em; }
.install .x { width: 44px; height: 44px; border: 0; background: none; color: var(--dim); display: grid; place-items: center; }
.ioshint { position: fixed; inset: 0; z-index: 40; display: grid; align-items: end; padding: 12px; background: rgba(0, 0, 0, .6); }
.ioshint .card { display: grid; gap: 14px; padding: 22px 20px max(20px, env(safe-area-inset-bottom)); background: var(--sheet-2); border: 1px solid var(--line3); box-shadow: var(--shadow); color: var(--ink); }
.ioshint .mk { width: 40px; height: 40px; }
.ioshint ol { margin: 0; padding: 0 0 0 20px; display: grid; gap: 10px; font-size: 17px; }
.ioshint .sh { display: inline; width: 20px; height: 20px; vertical-align: -4px; color: var(--acc); }
.ioshint button { height: 48px; border: 1px solid var(--acc); background: var(--acc); color: var(--acc-ink); font-weight: 600; letter-spacing: .05em; }