/* Deixis marketing site. One page, no framework.
   Identity: IBM Plex family, warm-grey ground, signal red — the same language as the product's
   internal documents, now the brand. Light and dark follow the system preference. */

:root {
  --ground:      #F4F4F1;
  --surface:     #FFFFFF;
  --surface-alt: #EBEBE7;
  --ink:         #17181A;
  --ink-2:       #3D4045;
  --muted:       #6A6D72;
  --rule:        #D8D8D2;
  --rule-strong: #B9B9B2;
  --signal:      #A3161B;
  --signal-ink:  #A3161B;
  --signal-wash: rgba(163, 22, 27, 0.07);
  --ok:          #2F7D46;

  --f-display: "IBM Plex Sans Condensed", "Helvetica Neue", Arial, sans-serif;
  --f-body:    "IBM Plex Sans", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground:      #131416;
    --surface:     #1A1C1F;
    --surface-alt: #212429;
    --ink:         #E9E8E4;
    --ink-2:       #C3C4C6;
    --muted:       #979AA0;
    --rule:        #2C2F34;
    --rule-strong: #43474D;
    --signal:      #E4635A;
    --signal-ink:  #F0857D;
    --signal-wash: rgba(228, 99, 90, 0.11);
    --ok:          #5CB878;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 72rem;
  margin: 0 auto;
  padding-left: clamp(1.25rem, 4vw, 3rem);
  padding-right: clamp(1.25rem, 4vw, 3rem);
}

h1, h2, h3 {
  font-family: var(--f-display);
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin: 0;
}

p { margin: 0; max-width: 66ch; }
a { color: var(--signal-ink); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

code, kbd {
  font-family: var(--f-mono);
  font-size: 0.86em;
}
code {
  background: var(--surface-alt);
  padding: 0.1em 0.36em;
  color: var(--ink-2);
}
kbd {
  display: inline-block;
  padding: 0.05em 0.5em;
  border: 1px solid var(--rule-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink-2);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--surface);
  padding: 0.5rem 1rem;
  z-index: 10;
}
.skip-link:focus { left: 0; }

/* ------------------------------- header ------------------------------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

.brand { display: flex; align-items: baseline; gap: 0.55rem; }
.brand-mark { width: 20px; height: 20px; color: var(--signal-ink); align-self: center; }
.brand-name {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}
.brand-say { font-family: var(--f-mono); font-size: 0.72rem; color: var(--muted); }

.top nav { display: flex; align-items: center; gap: 1.4rem; }
.top nav a { color: var(--ink-2); text-decoration: none; font-size: 0.95rem; }
.top nav a:hover { color: var(--signal-ink); }

/* ------------------------------- buttons ------------------------------ */

.btn {
  display: inline-block;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.01em;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink) !important;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { border-color: var(--signal); color: var(--signal-ink) !important; }
.btn--primary {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff !important;
}
.btn--primary:hover { filter: brightness(1.08); color: #fff !important; }
.btn--small { padding: 0.4rem 0.9rem; font-size: 0.9rem; }

/* -------------------------------- hero -------------------------------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 6fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding-top: clamp(2.5rem, 7vh, 5rem);
  padding-bottom: clamp(2.5rem, 7vh, 5rem);
}

.hero-copy { display: flex; flex-direction: column; gap: 1.4rem; }

h1 {
  font-weight: 700;
  font-size: clamp(2.3rem, 5.2vw, 3.6rem);
  line-height: 1.04;
  max-width: 16ch;
}

.lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--ink-2);
  max-width: 46ch;
}

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; }

.winget {
  background: var(--surface-alt);
  padding: 0.55rem 0.9rem;
  border-radius: 6px;
  color: var(--muted);
  white-space: nowrap;
}
.soon {
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal-ink);
  border: 1px solid currentColor;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  margin-left: 0.5rem;
  vertical-align: 0.12em;
}

.hero-fine { font-size: 0.88rem; color: var(--muted); }

/* the fake editor + HUD */

.demo { position: relative; min-width: 0; }

.demo-editor {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 18px 50px -22px rgba(0, 0, 0, 0.35);
}

.demo-titlebar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-alt);
}
.demo-titlebar .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--rule-strong);
}
.demo-file {
  margin-left: 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.demo-body {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.15rem 0;
  padding: 1rem 1rem 3.5rem;
  font-family: var(--f-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  min-height: 11.5rem;
}
.demo-gutter { color: var(--rule-strong); text-align: right; padding-right: 0.9rem; user-select: none; }
.demo-line { color: var(--ink-2); white-space: pre-wrap; word-break: break-word; }
.demo-syntax { color: var(--signal-ink); }

.demo-caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  background: var(--signal-ink);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .demo-caret { animation: none; }
}

.demo-hud {
  position: absolute;
  right: 1rem;
  bottom: -1.1rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--ink-2);
  box-shadow: 0 8px 24px -12px rgba(0, 0, 0, 0.4);
}
.demo-hud-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--rule-strong);
}
.demo-hud[data-state="listening"] .demo-hud-dot { background: var(--signal); }
.demo-hud[data-state="processing"] .demo-hud-dot { background: var(--muted); }
.demo-hud[data-state="listening"] { border-color: var(--signal); }
.demo-keys { display: inline-flex; align-items: center; gap: 0.25rem; color: var(--muted); }
.demo-keys kbd { font-size: 0.68rem; padding: 0 0.35rem; }
.demo-hud[data-state="listening"] .demo-keys kbd {
  border-color: var(--signal);
  color: var(--signal-ink);
}

/* ------------------------------ sections ------------------------------ */

.section {
  padding-top: clamp(2.5rem, 7vh, 4.5rem);
  padding-bottom: clamp(2.5rem, 7vh, 4.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border-top: 1px solid var(--rule);
}

.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--signal-ink);
}

h2 { font-weight: 700; font-size: clamp(1.7rem, 3.6vw, 2.4rem); line-height: 1.12; max-width: 24ch; }
h3 { font-weight: 600; font-size: 1.1rem; }

.grid-2, .grid-3 { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1.3rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.card p { font-size: 0.95rem; color: var(--ink-2); }

/* benchmark table */

.bench { display: flex; flex-direction: column; gap: 1rem; margin-top: 0.8rem; }
.bench-head { display: flex; flex-direction: column; gap: 0.4rem; }
.bench-head p { color: var(--muted); font-size: 0.92rem; }

.scroll { overflow-x: auto; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); }

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 36rem;
  font-size: 0.93rem;
  font-variant-numeric: tabular-nums;
}
th, td {
  text-align: left;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--rule);
}
thead th {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-alt);
}
tbody tr:last-child td { border-bottom: none; }
td.num { font-family: var(--f-mono); white-space: nowrap; color: var(--signal-ink); }

/* ------------------------------ free mode ----------------------------- */

.free-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}
.free-copy { display: flex; flex-direction: column; gap: 1.1rem; }
.free-copy p { color: var(--ink-2); }

.free-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.97rem;
}
.free-list li { color: var(--ink-2); }
.ref-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  margin-right: 0.35rem;
  border: 1px solid var(--rule-strong);
  border-radius: 5px;
  background: var(--surface);
  color: var(--signal-ink);
  font-size: 0.85rem;
  vertical-align: -0.35em;
}

/* the assembling note */

.fnote {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 18px 50px -22px rgba(0, 0, 0, 0.35);
}
.fnote-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-alt);
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--muted);
}
.fnote-refs { color: var(--signal-ink); }
.fnote-body {
  padding: 1.1rem 1.2rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 19rem;
}
.fnote-step {
  font-size: 0.92rem;
  color: var(--ink-2);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.fnote-step.shown { opacity: 1; transform: none; }
.fnote-ref {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--ink-2);
  background: var(--signal-wash);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--signal);
  border-radius: 6px;
  padding: 0.5rem 0.7rem;
}
.fnote-ref em { font-style: normal; color: var(--muted); }
@media (prefers-reduced-motion: reduce) {
  .fnote-step { opacity: 1; transform: none; transition: none; }
}

/* ------------------------------- modes -------------------------------- */

.modes-strip {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.7rem;
}
.mode {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.mode kbd {
  align-self: flex-start;
  font-size: 0.95rem;
  padding: 0.15em 0.6em;
  color: var(--signal-ink);
  border-color: var(--rule-strong);
}
.mode-name { font-family: var(--f-display); font-weight: 600; font-size: 0.98rem; }
.mode-desc { font-size: 0.8rem; color: var(--muted); line-height: 1.4; }
.mode--soon { border-style: dashed; }
.mode--soon kbd { color: var(--muted); }

/* ------------------------------- pricing ------------------------------ */

.tiers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }

.tier {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1.5rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.tier--free {
  border-color: var(--signal);
  background: linear-gradient(var(--signal-wash), var(--signal-wash)), var(--surface);
}
.tier-price {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.tier-price span { font-size: 1rem; font-weight: 600; color: var(--muted); }
.tier-line { font-size: 0.92rem; color: var(--ink-2); }
.tier ul {
  margin: 0.2rem 0 0.6rem;
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.93rem;
  color: var(--ink-2);
}
.tier li::marker { color: var(--signal-ink); }
.tier .btn { align-self: flex-start; margin-top: auto; }

.note {
  border-left: 3px solid var(--rule-strong);
  padding-left: 1rem;
  color: var(--muted);
  font-size: 0.93rem;
}

/* -------------------------------- close ------------------------------- */

.closer { align-items: flex-start; }

.waitlist {
  margin-top: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  width: 100%;
  max-width: 34rem;
}
.waitlist label { font-size: 0.92rem; color: var(--ink-2); }
.waitlist-row { display: flex; gap: 0.6rem; }
.waitlist input[type="email"] {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-size: 0.95rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.waitlist-status { font-size: 0.9rem; min-height: 1.4em; color: var(--ok); }
.waitlist-status.err { color: var(--signal-ink); }

/* ------------------------------- footer ------------------------------- */

footer {
  border-top: 1px solid var(--rule-strong);
  margin-top: 2rem;
  padding-top: 1.6rem;
  padding-bottom: 2.4rem;
  color: var(--muted);
  font-size: 0.88rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* ------------------------------ responsive ---------------------------- */

@media (max-width: 68rem) {
  .modes-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 56rem) {
  .hero, .free-grid { grid-template-columns: 1fr; }
  .grid-3, .tiers { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .modes-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brand-say { display: none; }
}