/* Chatdeck — Founding Partner landing page */
/* Brand tokens from FUR-712 design system */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/inter-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/fonts/inter-500.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/inter-600.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/inter-700.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("/fonts/inter-800.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/fonts/jetbrains-mono-500.woff2") format("woff2");
}

:root {
  --obsidian-950: #08090c;
  --obsidian-900: #0f1117;
  --obsidian-800: #181b24;
  --obsidian-700: #232634;
  --obsidian-600: #4a4d58;
  --obsidian-400: #8b8f9c;
  --obsidian-200: #c4c7cf;
  --obsidian-100: #e4e6ea;
  --obsidian-50: #f4f5f7;
  --white: #ffffff;
  --electric-500: #5e5ce6;
  --electric-600: #4e4bd0;
  --electric-300: #8c8aed;
  --electric-50: #eeeefc;
  --mint-400: #3fd9a8;
  --mint-500: #29c895;
  --mint-50: #e6faf3;
  --warn-400: #f4b942;

  --container: 1200px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    monospace;
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
}
html {
  overflow-x: hidden;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--obsidian-200);
  background: var(--obsidian-950);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1,
h2,
h3,
h4 {
  font-family: var(--font-sans);
  color: var(--white);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}
h1 {
  font-size: clamp(2rem, 6vw + 0.5rem, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  overflow-wrap: break-word;
}
h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}
h3 {
  font-size: 1.25rem;
  line-height: 1.3;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
p {
  margin: 0 0 1rem;
  color: var(--obsidian-200);
}
a {
  color: var(--electric-300);
  text-decoration: none;
}
a:hover {
  color: var(--white);
}
a:focus-visible {
  outline: 2px solid var(--electric-300);
  outline-offset: 3px;
  border-radius: 4px;
}
code,
.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--white);
  color: var(--obsidian-950);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60% 40% at 50% 0%, rgba(94, 92, 230, 0.15), transparent 60%),
    radial-gradient(40% 30% at 100% 50%, rgba(63, 217, 168, 0.08), transparent 60%);
}

.nav {
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 9, 12, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--electric-500), var(--electric-600));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(94, 92, 230, 0.4);
}
.brand-mark svg {
  color: var(--white);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-links a {
  color: var(--obsidian-100);
  font-size: 14px;
  font-weight: 500;
}
.nav-links a:hover {
  color: var(--white);
}
.nav-links a.btn-primary,
.nav-links a.btn-primary:hover {
  color: var(--white);
}
.nav-cta-short {
  display: none;
}
@media (max-width: 880px) {
  .nav-cta-full {
    display: none;
  }
  .nav-cta-short {
    display: inline;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1.25rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background-color 200ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 200ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 200ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
}
.btn-primary {
  background: var(--electric-500);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(94, 92, 230, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.btn-primary:hover {
  background: var(--electric-600);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(94, 92, 230, 0.45);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 2px;
}
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.2);
}
.btn-ghost:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
}
.btn-ghost:focus-visible {
  outline: 2px solid var(--electric-300);
  outline-offset: 2px;
}
.btn-lg {
  min-height: 52px;
  padding: 0 1.5rem;
  font-size: 15px;
}
@media (prefers-reduced-motion: reduce) {
  .btn,
  .btn-primary:hover {
    transition: none;
    transform: none;
  }
}

.hero {
  padding: 5rem 0 4rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background: rgba(94, 92, 230, 0.1);
  border: 1px solid rgba(94, 92, 230, 0.25);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--electric-300);
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint-400);
  box-shadow: 0 0 8px var(--mint-400);
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--electric-300) 0%, var(--mint-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  color: var(--obsidian-200);
  max-width: 34rem;
  margin-top: 1.5rem;
  line-height: 1.55;
}
.hero-cta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.hero-meta {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 13px;
  color: var(--obsidian-100);
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.hero-meta svg {
  color: var(--mint-400);
  flex-shrink: 0;
}

.chat-frame {
  background: var(--obsidian-900);
  border: 1px solid var(--obsidian-700);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(94, 92, 230, 0.1);
}
.chat-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--obsidian-800);
  border-bottom: 1px solid var(--obsidian-700);
  font-size: 12px;
  color: var(--obsidian-400);
}
.chat-bar .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.chat-bar .dot.r {
  background: #ff5f57;
}
.chat-bar .dot.y {
  background: #febc2e;
}
.chat-bar .dot.g {
  background: #28c840;
}
.chat-bar .url {
  margin-left: 0.75rem;
  padding: 0.25rem 0.625rem;
  background: var(--obsidian-700);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--obsidian-100);
}

.chat-body {
  padding: 1.5rem;
  background: var(--obsidian-900);
  min-height: 380px;
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--obsidian-800);
}
.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, #d4a574, #b8855f);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 14px;
}
.chat-title {
  font-weight: 600;
  color: var(--white);
  font-size: 14px;
}
.chat-sub {
  font-size: 12px;
  color: var(--mint-400);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}
.chat-sub::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint-400);
  box-shadow: 0 0 6px var(--mint-400);
}
.chat-msg {
  max-width: 80%;
  margin-bottom: 0.625rem;
  padding: 0.75rem 0.875rem;
  border-radius: 12px;
  font-size: 13.5px;
  line-height: 1.5;
}
.chat-msg.user {
  background: var(--electric-500);
  color: var(--white);
  margin-left: auto;
  border-bottom-right-radius: 4px;
}
.chat-msg.bot {
  background: var(--obsidian-800);
  color: var(--obsidian-100);
  border-bottom-left-radius: 4px;
}
.chat-msg.bot strong {
  color: var(--white);
}
.typing {
  display: inline-flex;
  gap: 3px;
  padding: 0.875rem;
  background: var(--obsidian-800);
  border-radius: 12px;
  border-bottom-left-radius: 4px;
  max-width: max-content;
}
.typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--obsidian-400);
  animation: typing 1.4s infinite;
}
.typing span:nth-child(2) {
  animation-delay: 0.15s;
}
.typing span:nth-child(3) {
  animation-delay: 0.3s;
}
@keyframes typing {
  0%,
  60%,
  100% {
    opacity: 0.35;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
    transform: translateY(-2px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .typing span {
    animation: none;
    opacity: 0.6;
  }
}

.strip {
  padding: 2.5rem 0;
  border-block: 1px solid rgba(255, 255, 255, 0.06);
}
.strip-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--obsidian-100);
  text-align: center;
  margin-bottom: 1.25rem;
}
.logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  opacity: 0.6;
}
.logo-mock {
  font-weight: 700;
  font-size: 18px;
  color: var(--obsidian-100);
  letter-spacing: -0.02em;
}

.section {
  padding: 6rem 0;
}
.section-light {
  background: var(--white);
  color: var(--obsidian-600);
}
.section-light h2,
.section-light h3 {
  color: var(--obsidian-950);
}
.section-light p {
  color: var(--obsidian-600);
}
.section-light .badge {
  background: var(--electric-50);
  color: var(--electric-600);
  border-color: rgba(94, 92, 230, 0.2);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.calc-card {
  background: linear-gradient(180deg, var(--white), var(--obsidian-50));
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 24px 60px rgba(8, 9, 12, 0.12);
  color: var(--obsidian-950);
}
.calc-eyebrow {
  font-size: 12px;
  font-weight: 600;
  color: var(--obsidian-600);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}
.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--obsidian-100);
  font-size: 15px;
}
.calc-row:last-child {
  border-bottom: none;
}
.calc-label {
  color: var(--obsidian-600);
}
.calc-val {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--obsidian-950);
}
.calc-row.total {
  padding-top: 1.25rem;
  border-top: 1.5px solid var(--obsidian-200);
  margin-top: 0.5rem;
  font-weight: 700;
}
.calc-row.total .calc-label {
  color: var(--obsidian-950);
  font-weight: 700;
}
.calc-row.total .calc-val {
  font-size: 1.5rem;
  color: var(--mint-500);
}
.calc-margin-note {
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--mint-50);
  border-radius: 8px;
  font-size: 13px;
  color: #1f3a32;
}
.calc-feats {
  list-style: none;
  padding: 0;
  margin-top: 1.5rem;
  color: var(--obsidian-600);
  font-size: 15px;
}
.calc-feats li {
  padding: 0.375rem 0;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}
.feature {
  background: var(--obsidian-900);
  border: 1px solid var(--obsidian-700);
  border-radius: 12px;
  padding: 1.75rem;
  transition: border-color 200ms, transform 200ms;
}
.feature:hover {
  border-color: var(--electric-500);
  transform: translateY(-2px);
}
@media (prefers-reduced-motion: reduce) {
  .feature {
    transition: none;
  }
  .feature:hover {
    transform: none;
  }
}
.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--obsidian-800);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--electric-300);
  margin-bottom: 1rem;
}
.feature h3 {
  color: var(--white);
  font-size: 1.0625rem;
  margin-bottom: 0.375rem;
}
.feature p {
  font-size: 14px;
  color: var(--obsidian-100);
  margin: 0;
  line-height: 1.55;
}

.stack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.stack-col {
  padding: 2rem;
  border-radius: 12px;
}
.stack-col h3 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}
.stack-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.stack-col li {
  display: flex;
  gap: 0.75rem;
  padding: 0.875rem 0;
  border-top: 1px solid;
  font-size: 14px;
  line-height: 1.5;
}
.stack-col li:first-child {
  border-top: none;
  padding-top: 0;
}
.stack-old {
  background: var(--obsidian-900);
  border: 1px solid var(--obsidian-700);
}
.stack-old h3 {
  color: var(--obsidian-100);
}
.stack-old li {
  color: var(--obsidian-100);
  border-color: var(--obsidian-700);
}
.stack-old li::before {
  content: "✕";
  color: var(--obsidian-400);
  flex-shrink: 0;
  font-weight: 700;
}
.stack-new {
  background: linear-gradient(180deg, rgba(94, 92, 230, 0.12), rgba(63, 217, 168, 0.06));
  border: 1px solid var(--electric-500);
}
.stack-new h3 {
  color: var(--electric-300);
}
.stack-new li {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.1);
}
.stack-new li::before {
  content: "✓";
  color: var(--mint-400);
  flex-shrink: 0;
  font-weight: 700;
}

.price-card {
  margin-top: 3rem;
  background: var(--obsidian-900);
  border: 1.5px solid var(--electric-500);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 36rem;
  position: relative;
  overflow: hidden;
}
.price-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--electric-300), transparent);
}
.price-tag {
  display: inline-block;
  background: var(--electric-500);
  color: var(--white);
  padding: 0.25rem 0.625rem;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 4px;
  margin-bottom: 1rem;
}
.price-title {
  font-size: 1.125rem;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.price-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.price-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.04em;
}
.price-unit {
  font-size: 1rem;
  color: var(--obsidian-100);
}
.price-sub {
  font-size: 14px;
  color: var(--obsidian-100);
  margin-bottom: 1.5rem;
}
.price-feats {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem;
  display: grid;
  gap: 0.625rem;
}
.price-feats li {
  display: flex;
  gap: 0.625rem;
  font-size: 14.5px;
  color: var(--obsidian-100);
}
.price-feats li::before {
  content: "✓";
  color: var(--mint-400);
  font-weight: 700;
  flex-shrink: 0;
}
.price-foot {
  font-size: 13px;
  color: var(--obsidian-100);
  margin: 1rem 0 0;
  text-align: center;
}

.faq {
  max-width: 48rem;
  margin-top: 2.5rem;
}
details {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.25rem 0;
}
details:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
summary {
  font-size: 1.0625rem;
  color: var(--white);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--electric-300);
  transition: transform 200ms;
  flex-shrink: 0;
}
details[open] summary::after {
  content: "−";
}
details p {
  margin: 0.75rem 0 0;
  font-size: 15px;
}

.final {
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(94, 92, 230, 0.25), transparent 70%),
    var(--obsidian-950);
  padding: 6rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}
.final h2 {
  max-width: 36rem;
  margin: 0 auto 1rem;
}
.final p {
  max-width: 32rem;
  margin: 0 auto 2rem;
}
.final .hero-cta {
  justify-content: center;
}

.footer {
  padding: 2.5rem 0;
  background: var(--obsidian-950);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--obsidian-100);
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer a {
  color: var(--obsidian-100);
  margin-left: 1.5rem;
}
.footer a:hover {
  color: var(--white);
}

@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .calc-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}
@media (max-width: 768px) {
  .nav-links a:not(.btn) {
    display: none;
  }
  .nav-links a.btn {
    padding: 0 0.875rem;
    font-size: 13px;
  }
  .features {
    grid-template-columns: 1fr;
  }
  .stack-grid {
    grid-template-columns: 1fr;
  }
  .logos {
    gap: 2rem;
  }
  .section,
  .final {
    padding: 4rem 0;
  }
  .hero {
    padding: 3rem 0;
  }
  .hero-cta .btn {
    width: 100%;
  }
}
@media (max-width: 480px) {
  .nav-links a.btn {
    display: none;
  }
  h1 {
    font-size: 2rem;
    letter-spacing: -0.03em;
  }
  h2 {
    font-size: 1.75rem;
  }
  .hero-lead {
    font-size: 1rem;
  }
  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer a {
    margin-left: 0;
    margin-right: 1.25rem;
  }
  .price-card {
    padding: 1.75rem 1.25rem;
  }
  .price-num {
    font-size: 2.75rem;
  }
  .chat-body {
    min-height: 320px;
  }
  .container {
    padding-inline: 1rem;
  }
}