:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0b1627;
  --panel: #101b2d;
  --panel-2: #172335;
  --ink: #edf7ff;
  --muted: #a9bac9;
  --soft: #71869a;
  --line: rgba(156, 205, 238, 0.16);
  --line-strong: rgba(156, 205, 238, 0.26);
  --blue: #7fd3ff;
  --blue-strong: #42b9f4;
  --green: #55e7b1;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
  --radius: 16px;
  --shell: 1160px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #eef4fb;
  --bg-soft: #e7eff8;
  --panel: #ffffff;
  --panel-2: #f7fbff;
  --ink: #0b1524;
  --muted: #42556b;
  --soft: #60768d;
  --line: rgba(35, 73, 110, 0.14);
  --line-strong: rgba(35, 73, 110, 0.24);
  --blue: #0369a1;
  --blue-strong: #0284c7;
  --green: #028568;
  --shadow: 0 28px 80px rgba(33, 54, 84, 0.16);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 12%, rgba(85, 231, 177, 0.1), transparent 28rem),
    radial-gradient(circle at 78% 0%, rgba(127, 211, 255, 0.13), transparent 34rem),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

[data-i18n] { display: none; }
html[data-lang="en"] [data-i18n="en"],
html[data-lang="fr"] [data-i18n="fr"],
html[data-lang="de"] [data-i18n="de"],
html[data-lang="ru"] [data-i18n="ru"] { display: revert; }

.site-shell {
  width: min(var(--shell), calc(100% - 32px));
  margin-inline: auto;
}

.site-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.site-nav {
  min-height: 76px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 14px;
  padding-block: 12px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.site-logo {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  object-fit: contain;
  border-radius: 12px;
}

.site-brand-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.site-brand-name {
  font-family: Manrope, Inter, sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
}

.site-brand-tag {
  color: var(--soft);
  font-size: 0.72rem;
  white-space: nowrap;
}

.site-nav-strip {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 74%, transparent);
}

.site-nav-link {
  min-height: 38px;
  min-width: 94px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
  padding-inline: 16px;
}

.site-nav-link:hover,
.site-nav-link.is-active {
  color: var(--ink);
  background: color-mix(in srgb, var(--blue) 16%, transparent);
}

.site-controls {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.language-menu {
  position: relative;
}

.language-trigger,
.theme-trigger {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  background: color-mix(in srgb, var(--panel) 78%, transparent);
  font: 800 0.82rem/1 Inter, sans-serif;
  cursor: pointer;
}

.theme-icon-light { display: none; }
html[data-theme="light"] .theme-icon-dark { display: none; }
html[data-theme="light"] .theme-icon-light { display: inline; }

.language-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 164px;
  display: none;
  padding: 6px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.language-menu.is-open .language-popover {
  display: grid;
}

.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  min-height: 38px;
  border: 0;
  border-radius: 10px;
  color: var(--ink);
  background: transparent;
  font: 800 0.85rem/1 Inter, sans-serif;
  padding: 0 10px;
  cursor: pointer;
}

.lang-option small {
  color: var(--soft);
  font: 600 0.72rem/1 Inter, sans-serif;
}

.lang-option:hover,
.lang-option.is-active {
  background: color-mix(in srgb, var(--blue) 14%, transparent);
}

.site-main {
  padding: clamp(44px, 7vw, 76px) 0 72px;
}

.hero {
  min-height: min(720px, calc(100vh - 76px));
  display: grid;
  grid-template-columns: minmax(0, 0.98fr) minmax(320px, 0.72fr);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
}

.page-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  margin-bottom: 18px;
  border-radius: 999px;
  color: var(--green);
  border: 1px solid color-mix(in srgb, var(--green) 30%, transparent);
  background: color-mix(in srgb, var(--green) 10%, transparent);
  font-size: 0.76rem;
  font-weight: 800;
}

.hero-title,
.page-title {
  margin: 0 0 14px;
  color: var(--ink);
  font-family: Manrope, Inter, sans-serif;
  font-size: clamp(2.25rem, 8vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.page-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
}

.hero-lead,
.page-lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1rem, 1.7vw, 1.24rem);
  margin: 0 0 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 800;
  padding-inline: 20px;
}

.site-button.primary {
  color: #04111e;
  background: linear-gradient(135deg, #95ddff, #4cc0f7);
}

.site-button.ghost {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--panel) 80%, transparent);
}

.hero-panel,
.content-panel,
.feature-card,
.waitlist-panel,
.mvp-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  box-shadow: var(--shadow);
}

.hero-panel {
  min-height: 330px;
  padding: 24px;
  display: grid;
  align-content: space-between;
}

.signal-row {
  display: flex;
  gap: 8px;
}

.signal-row span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--blue);
}

.hero-metric {
  display: grid;
  gap: 6px;
}

.hero-metric strong {
  font-family: Manrope, Inter, sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.hero-metric span {
  color: var(--muted);
}

.hero-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.hero-flow span,
.mvp-card {
  padding: 14px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel-2) 78%, transparent);
}

.feature-grid,
.mvp-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.feature-card {
  padding: 22px;
}

.feature-card h2,
.prose h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font-family: Manrope, Inter, sans-serif;
  font-size: 1.12rem;
}

.feature-card p,
.prose p,
.prose li,
.mvp-card span {
  color: var(--muted);
}

.waitlist-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1fr);
  gap: clamp(22px, 5vw, 56px);
  margin-top: 28px;
  padding: clamp(22px, 4vw, 42px);
}

.waitlist-panel-copy h2 {
  margin: 0 0 12px;
  font-family: Manrope, Inter, sans-serif;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.04;
}

.waitlist-panel-copy p {
  max-width: 460px;
  margin: 0;
  color: var(--muted);
}

.waitlist-form {
  display: grid;
  gap: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--ink);
  background: color-mix(in srgb, var(--panel-2) 82%, transparent);
  font: 600 0.96rem/1.4 Inter, sans-serif;
  padding: 0 14px;
  outline: none;
}

.form-field textarea {
  min-height: 110px;
  padding-block: 12px;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: color-mix(in srgb, var(--blue) 68%, var(--line-strong));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 18%, transparent);
}

.form-check {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.form-check input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--blue-strong);
}

.waitlist-form .site-button {
  width: fit-content;
  border: 0;
  cursor: pointer;
}

.waitlist-form .site-button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.form-status[data-state="success"] { color: var(--green); }
.form-status[data-state="error"] { color: #ff9f9f; }

.content-shell {
  width: min(900px, calc(100% - 32px));
  margin-inline: auto;
}

.content-panel {
  padding: clamp(24px, 4vw, 44px);
}

.prose section + section {
  margin-top: 26px;
}

.mvp-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
}

.mvp-card {
  display: grid;
  gap: 6px;
  min-height: 112px;
  border: 1px solid var(--line);
  transition: transform 160ms ease, border-color 160ms ease;
}

.mvp-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--soft);
  padding: 28px 0 36px;
}

.site-footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.site-footer-links a:hover {
  color: var(--ink);
}

@media (max-width: 820px) {
  .site-nav {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
  }

  .site-nav-strip {
    grid-column: 1 / -1;
    justify-self: stretch;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    order: 3;
  }

  .site-nav-link {
    min-width: 0;
    padding-inline: 8px;
  }

  .site-brand-tag {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .feature-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .waitlist-panel,
  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .waitlist-form .site-button {
    width: 100%;
  }

  .hero-panel {
    min-height: 240px;
  }
}

/* Product demo shell */
.product-body {
  background: var(--bg);
}

.product-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
}

.product-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 22px;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
}

.product-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}

.product-brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.product-brand span {
  display: grid;
  gap: 2px;
}

.product-brand strong {
  color: var(--ink);
  font: 800 1rem/1 Manrope, Inter, sans-serif;
}

.product-brand small {
  color: var(--soft);
  font-size: 0.72rem;
}

.product-nav {
  display: grid;
  gap: 8px;
}

.product-nav-link {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border-radius: 14px;
  color: var(--muted);
  font-weight: 750;
}

.product-nav-link:hover,
.product-nav-link.is-active,
.product-nav-link[aria-current="page"] {
  color: var(--ink);
  background: color-mix(in srgb, var(--blue) 15%, transparent);
}

.product-side-cta {
  margin-top: auto;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  color: #04111e;
  background: linear-gradient(135deg, #95ddff, #4cc0f7);
  font-weight: 850;
}

.product-main {
  min-width: 0;
  padding: clamp(18px, 3vw, 34px);
}

.product-topbar,
.product-hero,
.product-panel,
.product-editor {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.22);
}

.product-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: clamp(16px, 2.5vw, 24px);
  margin-bottom: 16px;
}

.product-eyebrow,
.product-card-kicker {
  display: inline-flex;
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 850;
  text-transform: uppercase;
}

.product-topbar h1 {
  margin: 6px 0 0;
  font: 850 clamp(1.8rem, 4vw, 3.5rem)/1 Manrope, Inter, sans-serif;
  letter-spacing: 0;
}

.product-top-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.product-top-actions a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 0 13px;
  font-weight: 750;
}

.product-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  gap: 16px;
  padding: clamp(18px, 2.5vw, 28px);
  margin-bottom: 16px;
}

.product-hero p,
.product-panel p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.product-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.product-button {
  min-height: 42px;
  border: 0;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  font: 850 0.9rem/1 Inter, sans-serif;
  cursor: pointer;
}

.product-button.primary {
  color: #04111e;
  background: linear-gradient(135deg, #95ddff, #4cc0f7);
}

.product-button.ghost {
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--panel-2) 82%, transparent);
}

.product-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.product-metric {
  min-height: 90px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 14px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel-2) 82%, transparent);
}

.product-metric strong {
  font: 850 1.55rem/1 Manrope, Inter, sans-serif;
}

.product-metric span {
  color: var(--soft);
  font-size: 0.82rem;
}

.product-grid,
.product-code-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.product-code-layout {
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
}

.product-panel,
.product-editor {
  padding: clamp(18px, 2.4vw, 24px);
}

.product-panel.span-2 {
  grid-column: span 2;
}

.product-panel h2,
.product-card-link h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font: 850 1.15rem/1.15 Manrope, Inter, sans-serif;
}

.product-card-link {
  display: grid;
  align-content: start;
  gap: 8px;
  min-height: 180px;
}

.product-progress {
  height: 10px;
  margin-top: 22px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel-2) 86%, transparent);
}

.product-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--blue-strong));
}

.product-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.product-list li {
  padding: 12px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel-2) 70%, transparent);
}

.product-callout,
.chat-row {
  margin-top: 16px;
  padding: 14px;
  border-radius: 14px;
  color: var(--ink);
  background: color-mix(in srgb, var(--blue) 10%, transparent);
}

.product-callout code {
  font-family: "JetBrains Mono", monospace;
  color: var(--green);
}

.product-editor {
  overflow: hidden;
  background: #050d1c;
}

.editor-tab {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border-radius: 10px;
  background: rgba(127, 211, 255, 0.12);
  color: var(--blue);
  padding: 0 12px;
  font-family: "JetBrains Mono", monospace;
}

.product-editor pre {
  margin: 18px 0 0;
  overflow-x: auto;
  color: #d8e9ff;
  font: 700 0.94rem/1.8 "JetBrains Mono", monospace;
}

.chat-row {
  max-width: 86%;
}

.chat-row.learner {
  margin-left: auto;
  background: color-mix(in srgb, var(--green) 12%, transparent);
}

.analytics-bars {
  height: 180px;
  display: flex;
  align-items: end;
  gap: 10px;
  margin-top: 22px;
}

.analytics-bars span {
  flex: 1;
  min-width: 32px;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(180deg, var(--blue), var(--green));
}

.selectable.selected {
  border-color: color-mix(in srgb, var(--blue) 55%, transparent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 12%, transparent);
}

.product-dock {
  display: none;
}

@media (max-width: 1100px) {
  .product-shell {
    grid-template-columns: 84px minmax(0, 1fr);
  }

  .product-sidebar {
    padding: 16px 12px;
    align-items: center;
  }

  .product-brand span,
  .product-nav-link span,
  .product-side-cta {
    display: none;
  }

  .product-nav-link {
    justify-content: center;
    width: 52px;
  }

  .product-grid,
  .product-code-layout,
  .product-hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .product-panel.span-2 {
    grid-column: auto;
  }
}

@media (max-width: 720px) {
  .product-shell {
    display: block;
    padding-bottom: 78px;
  }

  .product-sidebar {
    display: none;
  }

  .product-main {
    padding: 14px;
  }

  .product-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-topbar h1 {
    font-size: 2rem;
  }

  .product-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-dock {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: 10px;
    z-index: 60;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 4px;
    padding: 6px;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
  }

  .product-dock .product-nav-link {
    width: auto;
    min-height: 48px;
    justify-content: center;
    padding: 0;
  }

  .product-dock .product-nav-link span:not(.material-symbols-outlined) {
    display: none;
  }
}