/* ============ токены ============ */
:root {
  --bg: #f1f1f1;
  --surface: #ffffff;
  --surface-2: #f7f7f7;
  --ink: #101010;
  --ink-2: #4a4a4a;
  --ink-3: #8c8c8c;
  --line: #e2e2e2;
  --line-2: #d2d2d2;

  --mint: #4fd68c;
  --mint-ink: #0d2f1d;
  --mint-soft: #d8f7e6;

  --violet: #a78bfa;
  --violet-soft: #ece5ff;
  --slate-soft: #e8e8e8;
  --red: #e5484d;
  --red-soft: #ffe4e4;

  --r-lg: 26px;
  --r-md: 16px;
  --r-sm: 11px;

  --display: "Unbounded", "Inter", system-ui, sans-serif;
  --text: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --shadow: 0 2px 4px rgba(0, 0, 0, .03), 0 12px 32px -16px rgba(0, 0, 0, .12);
  --maxw: 1240px;
}

html[data-theme="dark"] {
  --bg: #141414;
  --surface: #1e1e1e;
  --surface-2: #262626;
  --ink: #f2f2f2;
  --ink-2: #b8b8b8;
  --ink-3: #7e7e7e;
  --line: #2f2f2f;
  --line-2: #3d3d3d;

  --mint: #4fd68c;
  --mint-ink: #05160d;
  --mint-soft: #163826;

  --violet-soft: #2c2545;
  --slate-soft: #2b2b2b;
  --red: #ff6369;
  --red-soft: #3a1f21;

  --shadow: 0 2px 4px rgba(0, 0, 0, .3), 0 16px 40px -20px rgba(0, 0, 0, .7);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--text);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .25s, color .25s;
}

h1, h2, h3, .logo-text, .foot-logo, .card-tag, .verdict, .ticks i, .how-grid i {
  font-family: var(--display);
}

/* ============ навигация ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  text-decoration: none;
  flex-shrink: 0;
}
.logo-mark { width: 26px; height: 26px; }
.logo-text { font-size: 15px; font-weight: 900; letter-spacing: -.02em; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
  font-size: 14px;
  font-weight: 500;
}
.nav-links a {
  color: var(--ink-2);
  text-decoration: none;
  transition: color .16s;
}
.nav-links a:hover { color: var(--ink); }

#threadLink {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 12px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  color: var(--ink-3);
  max-width: 260px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--mint);
  flex-shrink: 0;
}

.nav-actions { display: flex; gap: 8px; }

.btn-icon {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  transition: .16s;
}
.btn-icon:hover { color: var(--ink); border-color: var(--ink-3); }

@media (max-width: 900px) {
  .nav-links a[href="#how"], #threadLink { display: none; }
}

/* ============ hero ============ */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }

.hero { padding: clamp(44px, 7vw, 86px) 0 clamp(28px, 4vw, 46px); text-align: center; }

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 7.2vw, 82px);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.035em;
  text-transform: uppercase;
}
.accent { color: var(--mint); }

.hero-sub {
  max-width: 620px;
  margin: 0 auto 26px;
  color: var(--ink-2);
  font-size: clamp(15px, 1.5vw, 17px);
}

.ticks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.ticks li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px 8px 10px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--surface);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
}
.ticks i {
  font-style: normal;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 6px;
  background: var(--mint);
  color: var(--mint-ink);
}

/* ============ сцена ============ */
.stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding-bottom: 64px;
}
@media (max-width: 980px) { .stage { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: var(--shadow);
}
.card-panel { position: sticky; top: 78px; min-height: 460px; display: flex; flex-direction: column; }
@media (max-width: 980px) { .card-panel { position: static; min-height: 0; } }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.card-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.link-btn {
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  font-size: 13px;
  color: var(--ink-3);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .16s;
}
.link-btn:hover { color: var(--ink); }

/* ============ ИИ-блок ============ */
.ai-box {
  padding: 16px;
  border-radius: var(--r-md);
  background: var(--mint-soft);
  border: 1px solid color-mix(in srgb, var(--mint) 34%, transparent);
}
.ai-box .label { color: color-mix(in srgb, var(--mint-ink) 74%, var(--ink-2)); }
html[data-theme="dark"] .ai-box .label { color: var(--ink-2); }

.ai-box textarea {
  background: var(--surface);
  min-height: 62px;
  resize: vertical;
}

.ai-note {
  margin: 10px 0 0;
  font-size: 12px;
  color: color-mix(in srgb, var(--mint-ink) 62%, var(--ink-3));
}
html[data-theme="dark"] .ai-note { color: var(--ink-3); }
.ai-note.warn { color: var(--red); }

.divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 22px 0 18px;
  color: var(--ink-3);
  font-size: 12px;
}
.divider::before, .divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* ============ форма ============ */
form { display: grid; gap: 14px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .row-2 { grid-template-columns: 1fr; } }

.field { display: grid; gap: 6px; }
.label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink-2);
}
.label em { color: var(--mint); font-style: normal; }

input, textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  color: var(--ink);
  font: inherit;
  transition: border-color .16s, box-shadow .16s, background .16s;
}
input::placeholder, textarea::placeholder { color: var(--ink-3); }

input:focus, textarea:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--mint);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--mint) 26%, transparent);
}

textarea { resize: vertical; line-height: 1.6; }

input.invalid, textarea.invalid {
  border-color: var(--red);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--red) 20%, transparent);
}

.field-foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.counter { font-size: 11px; color: var(--ink-3); font-family: ui-monospace, Menlo, Consolas, monospace; }
.err { font-size: 12px; color: var(--red); min-height: 1em; }

.samples { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  transition: .16s;
}
.chip:hover { border-color: var(--mint); background: var(--mint-soft); color: var(--ink); }

/* ============ кнопки ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: .16s;
}
.btn:disabled { opacity: .55; cursor: progress; }

.btn-primary { background: var(--ink); color: var(--bg); width: 100%; }
.btn-primary:hover:not(:disabled) { background: var(--mint); color: var(--mint-ink); }

.btn-ai {
  width: 100%;
  margin-top: 12px;
  background: var(--mint);
  color: var(--mint-ink);
}
.btn-ai:hover:not(:disabled) { filter: brightness(1.07); }

.btn-ghost { background: transparent; border-color: var(--line-2); color: var(--ink-2); }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-3); }

.spinner {
  width: 14px; height: 14px;
  border: 2px solid color-mix(in srgb, currentColor 30%, transparent);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ панель результата ============ */
.panel-state { animation: fade .22s ease-out; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.panel-state h3 {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.02em;
}
.panel-state > p { margin: 0 0 16px; color: var(--ink-2); }

.idle-mark { color: var(--line-2); margin-bottom: 14px; }
.idle-mark svg { width: 84px; height: 84px; }

.pulse { display: flex; gap: 6px; margin-bottom: 16px; }
.pulse span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--mint);
  animation: bounce 1.1s infinite ease-in-out;
}
.pulse span:nth-child(2) { animation-delay: .15s; }
.pulse span:nth-child(3) { animation-delay: .3s; }
@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-7px); opacity: 1; } }

.verdict {
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.verdict.reply  { background: var(--mint-soft);   color: var(--ink); }
.verdict.meet   { background: var(--violet-soft); color: var(--ink); }
.verdict.ignore { background: var(--slate-soft);  color: var(--ink-2); }
.verdict.bad    { background: var(--red-soft);    color: var(--red); }

.summary { margin: 0 0 16px; color: var(--ink-2); }

.meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 7px 18px;
  margin: 0 0 16px;
  font-size: 13.5px;
}
.meta dt { color: var(--ink-3); }
.meta dd { margin: 0; }
@media (max-width: 520px) {
  .meta { grid-template-columns: 1fr; gap: 1px; }
  .meta dd { margin-bottom: 9px; }
}

.raw summary { cursor: pointer; color: var(--ink-3); font-size: 13px; }
.raw pre {
  margin: 10px 0 0;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  overflow-x: auto;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink-2);
}

.hints { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 13.5px; color: var(--ink-2); }

.log { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); }
.log-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.log ol { margin: 0; padding-left: 18px; display: grid; gap: 7px; font-size: 13px; color: var(--ink-2); }
.log b { color: var(--ink); font-weight: 600; }
.log time { color: var(--ink-3); font-size: 11.5px; font-family: ui-monospace, Menlo, Consolas, monospace; }

code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: .9em;
  padding: 1px 5px;
  border-radius: 5px;
  background: var(--surface-2);
  border: 1px solid var(--line);
}

/* ============ как работает ============ */
.how { padding: 20px 0 80px; }
.how h2 {
  margin: 0 0 26px;
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 900;
  letter-spacing: -.03em;
  text-transform: uppercase;
}
.how-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 980px) { .how-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .how-grid { grid-template-columns: 1fr; } }

.how-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
}
.how-grid i {
  display: inline-block;
  font-style: normal;
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-3);
  margin-bottom: 12px;
}
.how-grid h3 { margin: 0 0 7px; font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.how-grid p { margin: 0; font-size: 13.5px; color: var(--ink-2); }

/* ============ подвал ============ */
.foot {
  border-top: 1px solid var(--line);
  padding: 26px clamp(16px, 4vw, 40px);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  align-items: baseline;
  font-size: 12.5px;
  color: var(--ink-3);
}
.foot-logo { font-size: 13px; font-weight: 900; color: var(--ink); letter-spacing: -.02em; }

/* ============ модалка ============ */
.modal { position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; padding: 20px; }
/* Авторский display перебивает браузерное правило [hidden] { display: none } —
   без этой строки модалка висит поверх страницы при каждой загрузке. */
.modal[hidden] { display: none; }
.modal-bg { position: absolute; inset: 0; background: rgba(0, 0, 0, .45); backdrop-filter: blur(3px); }

.modal-card {
  position: relative;
  width: min(540px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--surface);
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, .6);
  display: grid;
  gap: 16px;
}
.modal-card h2 { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: -.02em; }
.modal-actions { display: flex; gap: 10px; }
.modal-actions .btn { flex: 1; }

.switch { display: flex; align-items: flex-start; gap: 12px; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch-track {
  flex-shrink: 0;
  width: 40px; height: 23px;
  margin-top: 2px;
  border-radius: 999px;
  background: var(--line-2);
  transition: background .18s;
  display: block;
  position: relative;
}
.switch-knob {
  position: absolute;
  top: 3px; left: 3px;
  width: 17px; height: 17px;
  border-radius: 50%;
  background: var(--surface);
  transition: transform .18s;
}
.switch input:checked + .switch-track { background: var(--mint); }
.switch input:checked + .switch-track .switch-knob { transform: translateX(17px); }
.switch-text { font-size: 13px; color: var(--ink-2); }
.switch-text b { display: block; color: var(--ink); font-size: 13.5px; }
.switch-text small { display: block; margin-top: 3px; line-height: 1.5; }

.urls { display: grid; gap: 7px; font-size: 12px; }
.urls div { display: grid; grid-template-columns: 78px 1fr; gap: 10px; align-items: center; }
.urls span { color: var(--ink-3); }
.urls code { overflow-wrap: anywhere; }