/* ================================================================
   Dialverdict — "Switchboard" design system
   Palette encodes meaning like the product does:
   amber = live signal · green = pass · red = fail
   ================================================================ */

:root {
  --bg:        #0B1322;
  --bg-raise:  #101B30;
  --bg-deep:   #070D1A;
  --panel:     #0E1830;
  --line:      rgba(148, 175, 220, 0.14);
  --text:      #E9EFF9;
  --muted:     #93A5C4;
  --amber:     #FFB454;
  --amber-dim: rgba(255, 180, 84, 0.14);
  --pass:      #43D9A3;
  --fail:      #FF6E6E;
  --link:      #86B7FF;
  --radius:    14px;
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body:    "IBM Plex Sans", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;
  --wrap: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.mono { font-family: var(--font-mono); }

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.08;
  letter-spacing: -0.015em;
  font-weight: 700;
}

h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); max-width: 22ch; }
h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 0.45rem; }

p { color: var(--muted); }
a { color: var(--link); text-decoration: none; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- eyebrow + lamp ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.1rem;
}

.eyebrow__lamp {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 12px 2px rgba(255, 180, 84, 0.65);
  animation: lamp 2.4s ease-in-out infinite;
}

@keyframes lamp {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  color: #14100A;
  background: var(--amber);
  padding: 0.8rem 1.5rem;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px -8px rgba(255, 180, 84, 0.55);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn--ghost:hover { box-shadow: none; border-color: var(--muted); }

.btn--small { padding: 0.55rem 1.1rem; font-size: 0.875rem; }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 19, 34, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav.is-scrolled { border-bottom-color: var(--line); }

.nav__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__logo {
  display: flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.15rem;
  color: var(--text);
}

.nav__mark { width: 26px; height: 26px; color: var(--amber); }

.nav__links {
  display: flex; gap: 1.6rem;
  margin-left: auto;
  font-size: 0.92rem;
}

.nav__links a { color: var(--muted); transition: color 0.15s ease; }
.nav__links a:hover { color: var(--text); }

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__inner { justify-content: space-between; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: clamp(7rem, 14vh, 10rem) 1.5rem clamp(3rem, 7vh, 5rem);
}

.hero__bg {
  position: absolute; inset: 0; z-index: -1;
  background-image: radial-gradient(rgba(148, 175, 220, 0.10) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 75%);
}

.hero__bg::after {
  content: "";
  position: absolute;
  top: 8%; right: -10%;
  width: 55vw; height: 55vw;
  max-width: 760px; max-height: 760px;
  background: radial-gradient(circle, rgba(255, 180, 84, 0.09), transparent 62%);
  filter: blur(10px);
}

.hero__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; }
}

.hero__title {
  font-size: clamp(2.35rem, 5.2vw, 3.9rem);
  font-weight: 800;
  margin-bottom: 1.4rem;
}

.hero__line { display: block; overflow: hidden; }

.hero__line--accent { color: var(--amber); }

/* staggered load reveal */
@media (prefers-reduced-motion: no-preference) {
  .hero__line {
    opacity: 0;
    transform: translateY(0.6em);
    animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  }
  .hero__line:nth-child(2) { animation-delay: 0.12s; }
  .hero__line:nth-child(3) { animation-delay: 0.24s; }
  .hero__sub, .hero__ctas, .hero__note {
    opacity: 0;
    animation: rise 0.7s 0.4s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  }
}

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero__sub { max-width: 46ch; margin-bottom: 1.8rem; font-size: 1.1rem; }

.hero__ctas { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-bottom: 1.1rem; }

.hero__note { font-size: 0.78rem; color: var(--muted); letter-spacing: 0.04em; }

/* ---------- console (signature element) ---------- */
.console {
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8),
              0 0 0 1px rgba(255, 180, 84, 0.05);
  overflow: hidden;
  font-size: 0.82rem;
}

.console__bar {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(148, 175, 220, 0.04);
}

.console__dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px rgba(255, 180, 84, 0.7);
  animation: lamp 1.6s ease-in-out infinite;
}

.console__title { color: var(--muted); font-size: 0.72rem; letter-spacing: 0.02em; }
.console__title b { color: var(--text); font-weight: 600; }

.console__status {
  margin-left: auto;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.console__wave {
  border-bottom: 1px solid var(--line);
  background: rgba(148, 175, 220, 0.025);
}

.console__wave canvas { display: block; width: 100%; height: 56px; }

.console__body {
  padding: 1rem 1.1rem;
  min-height: 322px;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.console__body .ln { display: block; }

.ln--sys   { color: var(--muted); font-size: 0.74rem; letter-spacing: 0.05em; }
.ln--who   { color: var(--amber); font-weight: 600; }
.ln--agent .ln--who { color: var(--link); }

.ln--turn { color: var(--text); }
.ln--turn .txt { color: var(--text); }

.ln--verdict {
  font-size: 0.76rem;
  padding: 0.35rem 0.6rem;
  border-radius: 7px;
  border: 1px solid;
  width: fit-content;
  max-width: 100%;
}

.ln--pass {
  color: var(--pass);
  border-color: rgba(67, 217, 163, 0.3);
  background: rgba(67, 217, 163, 0.07);
}

.ln--fail {
  color: var(--fail);
  border-color: rgba(255, 110, 110, 0.35);
  background: rgba(255, 110, 110, 0.08);
}

@media (prefers-reduced-motion: no-preference) {
  .ln { animation: lnIn 0.3s ease both; }
  .ln--verdict.is-stamp { animation: stamp 0.35s cubic-bezier(0.2, 1.4, 0.4, 1) both; }
}

@keyframes lnIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes stamp {
  0%   { opacity: 0; transform: scale(1.25); }
  100% { opacity: 1; transform: scale(1); }
}

.caret {
  display: inline-block;
  width: 7px; height: 1em;
  vertical-align: text-bottom;
  background: var(--amber);
  animation: lamp 0.8s steps(2) infinite;
}

.console__foot {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.75rem 1.1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
}

.console__verdict--fail { color: var(--fail); font-weight: 600; letter-spacing: 0.12em; }

.console__block {
  margin-left: auto;
  color: var(--fail);
  border: 1px solid rgba(255, 110, 110, 0.35);
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
}

/* ---------- platform strip ---------- */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.4rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem 2.2rem;
}

.strip__label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.strip__list {
  display: flex; flex-wrap: wrap; gap: 0.8rem 2rem;
  list-style: none;
  font-size: 0.9rem;
  color: var(--text);
}

.strip__list li { opacity: 0.75; transition: opacity 0.15s ease; }
.strip__list li:hover { opacity: 1; }

/* ---------- sections ---------- */
.section { padding: clamp(4rem, 9vh, 6.5rem) 1.5rem; }

.section--alt { background: var(--bg-raise); }

.section__head { max-width: var(--wrap); margin: 0 auto 2.8rem; }

.section__lede { max-width: 58ch; margin-top: 1rem; font-size: 1.08rem; }

/* scroll reveal */
.rv { opacity: 1; }

@media (prefers-reduced-motion: no-preference) {
  .rv {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.2, 0.7, 0.2, 1);
  }
  .rv.is-in { opacity: 1; transform: translateY(0); }
}

/* ---------- failure cards ---------- */
.cards {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.1rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover { transform: translateY(-4px); border-color: rgba(255, 180, 84, 0.35); }

.card__code {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--fail);
  margin-bottom: 0.9rem;
}

.card p:not(.card__code) { font-size: 0.95rem; }

/* ---------- steps ---------- */
.steps {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2.6rem;
}

.steps__rail {
  position: absolute;
  left: 1.35rem; top: 0.5rem; bottom: 0.5rem;
  width: 1px;
  background: linear-gradient(var(--amber-dim), var(--line));
}

.step {
  display: grid;
  grid-template-columns: 2.7rem 1fr;
  gap: 1.2rem;
  position: relative;
}

.step__num {
  width: 2.7rem; height: 2.7rem;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--bg-raise);
  color: var(--amber);
  font-size: 0.8rem;
  font-weight: 600;
  z-index: 1;
}

.step p { font-size: 0.98rem; max-width: 56ch; }

/* ---------- snippets ---------- */
.snippet {
  margin-top: 1.1rem;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.1rem 1.2rem;
  font-size: 0.8rem;
  line-height: 1.7;
  overflow-x: auto;
  color: var(--text);
}

.snippet .c { color: var(--amber); }
.snippet .k { color: var(--link); }
.snippet .s { color: var(--pass); }
.snippet .fail { color: var(--fail); font-weight: 600; }

/* ---------- judge ---------- */
.judge {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 860px) { .judge { grid-template-columns: 1fr; } }

.judge__copy p { max-width: 52ch; }

.judge__list {
  list-style: none;
  margin-top: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.judge__list li {
  color: var(--muted);
  font-size: 0.98rem;
  padding-left: 1.4rem;
  position: relative;
}

.judge__list li::before {
  content: "✓";
  position: absolute; left: 0;
  color: var(--pass);
  font-weight: 600;
}

.judge__list b { color: var(--text); }

.snippet--verdict { margin-top: 0; box-shadow: 0 24px 60px -28px rgba(0, 0, 0, 0.7); }

/* ---------- features grid ---------- */
.grid {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.1rem;
}

.feat {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: rgba(11, 19, 34, 0.5);
  transition: border-color 0.2s ease;
}

.feat:hover { border-color: rgba(134, 183, 255, 0.35); }

.feat p { font-size: 0.95rem; }

/* ---------- pricing ---------- */
.tiers {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  align-items: stretch;
}

.tier {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  display: flex;
  flex-direction: column;
  position: relative;
}

.tier--hot {
  border-color: rgba(255, 180, 84, 0.5);
  box-shadow: 0 20px 60px -25px rgba(255, 180, 84, 0.25);
}

.tier__flag {
  position: absolute;
  top: -0.8rem; left: 50%;
  transform: translateX(-50%);
  background: var(--amber);
  color: #14100A;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.8rem;
  border-radius: 999px;
  white-space: nowrap;
}

.tier h3 { font-size: 0.85rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }

.tier__price {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text);
  margin: 0.4rem 0 0.2rem;
}

.tier__price span { font-size: 1rem; font-weight: 500; color: var(--muted); }

.tier__desc { font-size: 0.92rem; margin-bottom: 1.1rem; }

.tier ul {
  list-style: none;
  display: flex; flex-direction: column; gap: 0.55rem;
  margin-bottom: 1.6rem;
  flex: 1;
}

.tier ul li {
  color: var(--muted);
  font-size: 0.94rem;
  padding-left: 1.35rem;
  position: relative;
}

.tier ul li::before {
  content: "✓";
  position: absolute; left: 0;
  color: var(--pass);
}

.tier .btn { text-align: center; }

.tiers__note {
  max-width: var(--wrap);
  margin: 1.4rem auto 0;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
}

.faq summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--amber);
  font-size: 1.2rem;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq details[open] summary::after { transform: rotate(45deg); }

.faq details p { padding-top: 0.8rem; max-width: 62ch; font-size: 0.98rem; }

/* ---------- CTA ---------- */
.cta {
  padding: clamp(5rem, 11vh, 8rem) 1.5rem;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 100%, rgba(255, 180, 84, 0.10), transparent 65%);
  pointer-events: none;
}

.cta__inner {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.cta__inner .eyebrow { justify-content: center; }

.cta__inner h2 { margin: 0 auto 1rem; }

.cta__inner > p { max-width: 48ch; margin: 0 auto 1.8rem; }

.cta__form {
  display: flex;
  gap: 0.7rem;
  max-width: 460px;
  margin: 0 auto;
}

@media (max-width: 520px) { .cta__form { flex-direction: column; } }

.cta__input {
  flex: 1;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  color: var(--text);
  font-size: 0.9rem;
  transition: border-color 0.15s ease;
}

.cta__input:focus { border-color: var(--amber); outline: none; }

.cta__input::placeholder { color: var(--muted); opacity: 0.6; }

.cta__ok { margin-top: 1.1rem; color: var(--pass); font-size: 0.85rem; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 2.6rem 1.5rem;
}

.footer__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
}

.footer__tag { font-size: 0.75rem; color: var(--muted); letter-spacing: 0.08em; }

.footer__legal { margin-left: auto; font-size: 0.85rem; color: var(--muted); }

@media (max-width: 640px) {
  .footer__inner { flex-direction: column; text-align: center; }
  .footer__legal { margin-left: 0; }
}