/* ===========================
   Design System Foundation
   =========================== */

:root {
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-scale: 1;
  --body-letter-spacing: 0;
  --nav-letter-spacing: 0.01em;
  --hero-letter-spacing: -0.03em;

  /* Colors - Ink (Text) */
  --ink-900: #0B0B0F;
  --ink-700: #2C2C33;
  --ink-500: #5A5A66;

  /* Colors - Paper (Background) */
  --paper-50: #F7F6FA;
  --paper-100: #EEEBF0;

  /* Colors - Accent (Brand) */
  --accent-500: #7B61FF;
  --accent-300: #B2A3FF;
  --accent-50: #F1EEFF;

  /* Colors - Agent */
  --growth: #7BA5FF;
  --monetization: #A259FE;
  --agent-arrow: #A259FE;

  /* Colors - Semantic */
  --yellow: #E8FF00;
  --yellow-dark: #D4E800;
  --success: #25C281;
  --error: #EF4444;
  --white: #FFFFFF;
  --black: #000000;

  /* Shadows */
  --shadow-sm: 0 6px 20px rgba(11, 11, 15, 0.06);
  --shadow-md: 0 8px 32px rgba(11, 11, 15, 0.08);
  --shadow-lg: 0 10px 32px rgba(11, 11, 15, 0.10);
  --shadow-xl: 0 12px 40px rgba(11, 11, 15, 0.12);
  --shadow-drop: 0 10px 26px rgba(21, 10, 40, 0.10);

  /* Border Radius */
  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 32px;
  --radius-pill: 9999px;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
  --header-height-mobile: 64px;
}

/* ===========================
   Base Styles
   =========================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  letter-spacing: var(--body-letter-spacing);
  background: var(--paper-100);
  color: var(--ink-900);
  height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
}

/* Background pattern */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image: url('/background.svg');
  background-repeat: repeat;
  background-size: 2000px 2000px;
  opacity: 0.2;
  z-index: -1;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Keep hero’s top distance stable in success state */
.success-active .hero {
  align-items: flex-start;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.7;
}

/* ===========================
   Header
   =========================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--paper-100);
}


.header-container {
  position: static;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: var(--header-height);
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo {
  position: absolute;
  top: 50%;
  left: 40px;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  color: inherit;
}

.logo svg {
  display: block;
  width: 120px;
  height: auto;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-desktop button {
  appearance: none;
  background: none;
  border: 0;
  font-size: calc(0.95rem * var(--font-scale));
  font-weight: 500;
  color: var(--ink-900);
  cursor: pointer;
  padding: 0;
  letter-spacing: var(--nav-letter-spacing);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.nav-desktop button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}

.nav-desktop button:hover {
  opacity: 0.7;
  transform: translateY(-1px);
}

/* Hamburger menu */
.hamburger {
  position: absolute;
  top: 50%;
  right: 1.5rem;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  visibility: hidden;
  pointer-events: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--black);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: all 0.2s ease;
}

.hamburger span:nth-child(1) {
  top: 12px;
}

.hamburger span:nth-child(2) {
  top: 19px;
}

.hamburger span:nth-child(3) {
  top: 26px;
}

.hamburger.active span:nth-child(1) {
  top: 19px;
  transform: translateX(-50%) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  top: 19px;
  transform: translateX(-50%) rotate(-45deg);
}

/* Mobile menu */
.nav-mobile {
  background: var(--white);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.nav-mobile[hidden] {
  display: none;
}

.nav-mobile button {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-size: calc(1.125rem * var(--font-scale));
  font-weight: 500;
  color: var(--ink-900);
  cursor: pointer;
  padding: 0;
}

/* ===========================
   Hero Section
   =========================== */

.hero {
  position: relative;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  text-align: center;
  overflow: visible;
  padding-top: 5rem;
  padding-bottom: 4rem;
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  padding: 0 1.5rem;
}

/* Headline */
.hero-headline {
  position: relative;
  font-size: clamp(calc(2.25rem * var(--font-scale)),
      calc(6vw * var(--font-scale)),
      calc(5.25rem * var(--font-scale)));
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: var(--hero-letter-spacing);
  margin: 0 auto 1.5rem;
  max-width: 980px;
  color: var(--ink-900);
}

/* Typing word container */
.typing-word {
  display: inline-block;
}

/* Cursor line */
.cursor-line {
  display: inline-block;
  width: 2.89px;
  height: 0.8em;
  background: var(--monetization);
  vertical-align: middle;
  margin: 0 0.1em;
  margin-bottom: 0.1em;
}

/* Highlight wrapper */
.highlight-wrapper {
  position: relative;
  display: inline-block;
}

/* Highlight background */
.highlight-bg {
  position: absolute;
  left: -0.5rem;
  right: -0.5rem;
  top: 10%;
  bottom: 10%;
  display: flex;
  align-items: center;
  border-radius: 12px 0 0 12px;
  overflow: hidden;
  z-index: -1;
  transform-origin: left center;
  transform: scaleX(0);
}

.highlight-bg-fill {
  flex: 1;
  height: 100%;
  background: var(--monetization);
  opacity: 0.2;
  border-radius: 12px 0 0 12px;
}

.highlight-bg-accent {
  width: 2.89px;
  height: 100%;
  background: var(--monetization);
}

/* Highlight text */
.highlight-text {
  position: relative;
  display: inline-block;
}

.highlight-text .char {
  display: inline-block;
}

/* Subheading */
.hero-subheading {
  color: var(--ink-700);
  font-size: clamp(calc(1rem * var(--font-scale)),
      calc(0.7vw * var(--font-scale) + 0.9rem * var(--font-scale)),
      calc(1.2rem * var(--font-scale)));
  margin: 0 auto 2.5rem;
  max-width: 672px;
  line-height: 1.6;
}

/* ===========================
   Email Form
   =========================== */

.waitlist-stage {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto;
  align-items: stretch;
  justify-items: stretch;
  width: 100%;
  max-width: 28rem;
  margin: 1.1rem auto 0;
}

/* Allow wider container when showing success */
.waitlist-stage.is-success {
  max-width: 512px;
}

@media (min-width: 1024px) {
  .waitlist-stage.is-success {
    max-width: 608px;
  }
}

.email-form {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.375rem 0.25rem 0.25rem;
  height: 56px;
  position: relative;
  /* Keep transitions light and predictable; avoid animating opacity via keyframes */
  transition: opacity 0.84s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  will-change: opacity;
}

.email-form input[type="email"] {
  flex: 1;
  background: transparent;
  border: none;
  padding: 0.75rem 1.25rem;
  padding-right: 8rem;
  font-size: calc(0.9375rem * var(--font-scale));
  color: var(--ink-900);
  -webkit-appearance: none;
  appearance: none;
}

.email-form input[type="email"]::placeholder {
  color: rgba(0, 0, 0, 0.4);
}

.email-form input[type="email"]:focus {
  outline: none;
}

.email-form input[type="email"]:focus-visible,
.email-form button[type="submit"]:focus-visible {
  outline: none;
}

.email-form button[type="submit"] {
  position: absolute;
  right: 0.25rem;
  top: 0.23rem;
  height: calc(100% - 0.5rem);
  padding: 0.75rem 1.5rem;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: var(--radius-pill);
  font-size: calc(0.9375rem * var(--font-scale));
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s ease, transform 0.2s ease;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.email-form button[type="submit"]:hover:not(:disabled) {
  background: #2c2c2c;
  transform: scale(1.02);
}

.email-form button[type="submit"]:active:not(:disabled) {
  transform: scale(0.98);
}

.email-form button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Inline spinner on submit button */
.email-form button[type="submit"] .spinner {
  display: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin 0.8s linear infinite;
}

.email-form button[type="submit"][aria-busy="true"] .spinner {
  display: inline-block;
}

.email-form button[type="submit"][aria-busy="true"] .btn-label {
  opacity: 0.85;
}

@keyframes spin { to { transform: rotate(360deg); } }

.email-form:focus-within {
  border-color: rgba(123, 97, 255, 0.9);
  box-shadow: 0 0 0 4px rgba(123, 97, 255, 0.15);
}

.waitlist-stage .email-form,
.waitlist-stage .confirmation {
  grid-area: 1 / 1 / 2 / 2;
  width: 100%;
}

.waitlist-stage .email-form {
  opacity: 1;
  pointer-events: auto;
  /* Use same timing as confirmation for a smooth crossfade */
  transition: opacity 0.84s ease;
}

.waitlist-stage.is-success .email-form {
  /* Cancel any potential keyframe animation that might hold final opacity */
  animation: none !important;
  opacity: 0;
  pointer-events: none;
}

.waitlist-stage .confirmation {
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.84s ease, transform 0.84s ease;
  will-change: opacity, transform;
}

.waitlist-stage.is-success .confirmation {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* Honeypot fields */
.honeypot-row {
  position: absolute;
  left: -9999px;
  top: -9999px;
}

.checkbox-row {
  position: absolute;
  left: -9999px;
  top: -9999px;
}

/* Form feedback */
.form-feedback {
  margin-top: 1rem;
  font-size: calc(0.9rem * var(--font-scale));
  text-align: center;
  color: var(--ink-500);
}

.form-feedback.error {
  color: var(--error);
}

/* Confirmation message */
.confirmation {
  text-align: center;
  display: grid;
  gap: 1rem;
  justify-items: center;
  padding-top: 1.75rem;
}

.confirmation h3 {
  font-size: calc(1.25rem * var(--font-scale));
  color: var(--ink-900);
  margin: 0;
}

.confirmation p {
  color: var(--ink-700);
  margin: 0;
}

/* Success card (classic) */
.confirmation-card {
  width: 100%;
  max-width: 512px;
  margin: 0 auto;
  background: #FFFFFF;
  border: 1px solid rgba(11, 11, 15, 0.08);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 1.25rem 1.25rem 1.5rem;
  display: grid;
  gap: 0.75rem;
  justify-items: center;
}

@media (min-width: 1024px) {
  .confirmation-card {
    max-width: 608px;
  }
}

.confirmation-icon svg .icon-circle { fill: var(--accent-500); }
.confirmation-icon svg .icon-check { stroke: #FFFFFF; }

.confirmation-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-pill);
  background: var(--accent-500);
  color: #FFFFFF;
  font-weight: 700;
  font-size: calc(0.95rem * var(--font-scale));
  text-decoration: none;
}

.btn-primary .icon {
  margin-right: 0.5rem;
  color: inherit;
  fill: currentColor;
}

.btn-primary:hover { filter: brightness(0.95); }
.btn-primary:focus-visible { outline: 2px solid var(--accent-300); outline-offset: 3px; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-700);
  border: 1px solid rgba(11, 11, 15, 0.15);
  font-weight: 600;
}

.btn-ghost:hover { background: rgba(0, 0, 0, 0.04); }
.btn-ghost:focus-visible { outline: 2px solid var(--accent-300); outline-offset: 3px; }

:root[data-font="retro"] .confirmation h3 {
  font-size: calc(1.25rem * var(--font-scale) * 1.15);
  letter-spacing: 0.08em;
}

:root[data-font="retro"] .confirmation p {
  font-size: calc(0.9rem * var(--font-scale) + 0.1rem);
  letter-spacing: 0.05em;
}

:root[data-font="retro"] .confirmation a {
  padding: 0.85rem 1.45rem;
  font-size: calc(0.95rem * var(--font-scale) + 0.12rem);
  letter-spacing: 0.08em;
  font-weight: 500;
}

:root[data-font="retro"] .email-form button[type="submit"] {
  padding: 0.9rem 1.8rem;
  font-size: calc(0.95rem * var(--font-scale) + 0.12rem);
  letter-spacing: 0.08em;
  font-weight: 500;
}

:root[data-font="retro"] .agent-bubble {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

:root[data-font="retro"] .agent-bubble strong {
  font-size: 1.1rem;
  letter-spacing: 0.06em;
}

:root[data-font="retro"] .agent-bubble span {
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

/* ===========================
   Decorative Elements
   =========================== */

/* Agent cursor - arrow pointer with chat bubble */
#monetization-badge {
  position: absolute;
  opacity: 0;
  z-index: 50;
  pointer-events: none;
}

#monetization-badge svg {
  display: block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.agent-bubble {
  position: absolute;
  top: 20px;
  left: 18px;
  background: #A259FE;
  border-radius: 1rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  padding: 0.75rem 1rem;
  text-align: left;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

.agent-bubble strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.2;
  white-space: nowrap;
}

.agent-bubble span {
  display: block;
  font-size: 0.875rem;
  font-weight: 300;
  color: #FFFFFF;
  margin-top: 0.125rem;
  min-height: 1.1rem;
  white-space: nowrap;
  line-height: 1.2;
}

/* ===========================
   Footer
   =========================== */

.site-footer {
  padding: 1.5rem 0;
  text-align: center;
  color: var(--ink-500);
  flex-shrink: 0;
  font-size: calc(1rem * var(--font-scale));
}

.fine-print {
  margin: 2rem 0 0;
  font-size: calc(0.875rem * var(--font-scale));
  color: var(--ink-500);
  text-align: center;
}

/* ===========================
  Utility Classes
   =========================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Floating theme toggle (bottom-left) */
.theme-fab {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--ink-900);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  z-index: 60;
}

.theme-fab:hover {
  filter: brightness(1.05);
}

.theme-fab:focus-visible {
  outline: 2px solid var(--accent-500);
  outline-offset: 3px;
}

/* ===========================
   Animations
   =========================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

/* ===========================
   Responsive Design
   =========================== */

@media (min-width: 768px) {
  .header-container {
    padding: 0 2.5rem;
  }

}

@media (min-width: 1024px) {
  .header-container {
    padding: 0 5rem;
  }
}

@media (min-width: 768px) {
  .hero {
    padding-top: 8rem;
    padding-bottom: 5rem;
  }

  .hero-container {
    padding: 0 2.5rem;
  }

  .hero-subheading {
    margin-bottom: 3rem;
  }
}

@media (max-width: 860px) {
  .header-container {
    justify-content: flex-start;
    padding: 0 1.25rem;
  }

  .logo {
    position: absolute;
    top: 50%;
    left: 40px;
    transform: translateY(-50%);
  }

  .nav-desktop {
    display: none;
  }

  .hamburger {
    visibility: visible;
    pointer-events: auto;
    right: 1.25rem;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: calc(100vh - 64px);
    padding-top: 5rem;
    padding-bottom: 4rem;
  }

  .header-container {
    height: var(--header-height-mobile);
  }

  .hero-container {
    padding: 0 1rem;
  }

  .hero-headline {
    font-size: clamp(calc(1.75rem * var(--font-scale)),
        calc(8vw * var(--font-scale)),
        calc(2.5rem * var(--font-scale)));
  }

  .hero-subheading {
    font-size: clamp(calc(0.9rem * var(--font-scale)),
        calc(4vw * var(--font-scale)),
        calc(1.1rem * var(--font-scale)));
    margin-top: 5rem;
  }

  .email-form {
    height: 52px;
  }

  .email-form input[type="email"] {
    padding-right: 8rem;
    font-size: calc(0.9375rem * var(--font-scale));
  }

  .email-form button[type="submit"] {
    font-size: calc(0.9375rem * var(--font-scale));
    padding: 0.75rem 1.5rem;
  }

}

/* ===========================
   Accessibility
   =========================== */

/* Focus visible styles */
:focus-visible {
  outline: 2px solid var(--accent-500);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:root[data-font="retro"] body,
:root[data-font="retro"] .nav-desktop button,
:root[data-font="retro"] .nav-mobile button,
:root[data-font="retro"] .hero-headline,
:root[data-font="retro"] .hero-subheading,
:root[data-font="retro"] .waitlist-stage,
:root[data-font="retro"] .email-form input[type="email"],
:root[data-font="retro"] .email-form button[type="submit"],
:root[data-font="retro"] .form-feedback,
:root[data-font="retro"] .confirmation,
:root[data-font="retro"] .site-footer,
:root[data-font="retro"] .fine-print {
  font-family: 'Jersey 10', 'Inter', system-ui, -apple-system, sans-serif;
}

:root[data-font="retro"] {
  --font-body: 'Jersey 10', 'Inter', system-ui, -apple-system, sans-serif;
  --font-scale: 1.3;
  --body-letter-spacing: 0.02em;
  --nav-letter-spacing: 0.08em;
  --hero-letter-spacing: 0.01em;
}