/* ============================================
   Flow Boost AI — Coming Soon
   ============================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, p, figure, blockquote, dl, dd { margin: 0; }
html { -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }

/* ---------- Tokens ---------- */
:root {
  /* Colors */
  --color-bg: #0A0B0F;
  --color-surface: #13151C;
  --color-text: #F4F5F7;
  --color-text-secondary: #9BA1AD;
  --color-text-muted: #6B7280;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.14);
  --color-glass: rgba(255, 255, 255, 0.04);
  --color-glass-strong: rgba(255, 255, 255, 0.06);
  --color-accent-blue: #4F8CFF;
  --color-accent-cyan: #00D4FF;
  --color-accent-violet: #7C5CFF;
  --color-success: #4ADE80;
  --color-error: #F87171;

  --gradient-accent: linear-gradient(135deg, #4F8CFF 0%, #00D4FF 100%);
  --gradient-text: linear-gradient(135deg, #4F8CFF 0%, #00D4FF 60%, #7C5CFF 100%);

  /* Spacing scale (8px) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-glow: 0 0 60px rgba(79, 140, 255, 0.25);
  --shadow-card: 0 20px 60px -20px rgba(0, 0, 0, 0.6);

  /* Type */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100svh;
  overflow-x: hidden;
  position: relative;
}

::selection {
  background: var(--color-accent-blue);
  color: white;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

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

/* Honeypot — visually hidden but NOT display:none (some bots detect that).
   Positioned offscreen, removed from tab order, ignored by screen readers. */
.hp-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- Background effects ---------- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.aurora__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  will-change: transform;
}

.aurora__blob--violet {
  width: 600px; height: 600px;
  background: var(--color-accent-violet);
  top: -200px;
  left: -150px;
  animation: drift1 20s ease-in-out infinite alternate;
}

.aurora__blob--blue {
  width: 700px; height: 700px;
  background: var(--color-accent-blue);
  top: 20%;
  right: -250px;
  opacity: 0.3;
  animation: drift2 24s ease-in-out infinite alternate;
}

@keyframes drift1 {
  from { transform: translate(0, 0); }
  to   { transform: translate(80px, 60px); }
}
@keyframes drift2 {
  from { transform: translate(0, 0); }
  to   { transform: translate(-80px, 80px); }
}

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

/* ---------- Glass utility ---------- */
.glass {
  background: var(--color-glass);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

/* ---------- Header ---------- */
.site-header {
  padding: clamp(1.25rem, 3vw, 2rem) 0;
  position: relative;
  z-index: 10;
}

.site-header > .brand,
.site-header { display: flex; }

.site-header {
  justify-content: flex-start;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
  max-width: 1200px;
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  transition: opacity 0.2s;
}
.brand:hover { opacity: 0.85; }
.brand:focus-visible { outline: 2px solid var(--color-accent-blue); outline-offset: 4px; border-radius: var(--radius-sm); }

.brand__mark { flex-shrink: 0; }
.brand__accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Hero ---------- */
.hero {
  display: flex;
  align-items: center;
  min-height: calc(100svh - 80px);
  padding-block: clamp(2rem, 6vw, 4rem);
  position: relative;
}

.hero .container {
  max-width: 900px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  margin-bottom: var(--space-8);
  animation: fadeUp 0.6s ease-out backwards;
}

.eyebrow__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent-cyan);
  box-shadow: 0 0 12px var(--color-accent-cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.3); }
}

.hero__heading {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin-bottom: var(--space-6);
  animation: fadeUp 0.7s 0.1s ease-out backwards;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__sub {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 620px;
  margin: 0 auto var(--space-10);
  animation: fadeUp 0.7s 0.2s ease-out backwards;
}

/* ---------- Signup form ---------- */
.signup {
  display: flex;
  align-items: stretch;
  gap: var(--space-2);
  max-width: 520px;
  margin: 0 auto;
  padding: var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--color-glass-strong);
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-glow);
  transition: border-color 0.2s, box-shadow 0.2s;
  animation: fadeUp 0.7s 0.3s ease-out backwards;
}

.signup:focus-within {
  border-color: rgba(79, 140, 255, 0.5);
  box-shadow: 0 0 80px rgba(79, 140, 255, 0.4);
}

.signup__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.875rem 1.25rem;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--color-text);
  font-size: 1rem;
}
.signup__input::placeholder { color: var(--color-text-muted); }

.signup__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 1.5rem;
  background: var(--gradient-accent);
  color: #0A0B0F;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s;
}

.signup__button:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.35);
}
.signup__button:active { transform: translateY(0); }
.signup__button:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }

.signup__button-arrow { transition: transform 0.2s; }
.signup__button:hover .signup__button-arrow { transform: translateX(3px); }

.signup__microcopy {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  animation: fadeUp 0.7s 0.4s ease-out backwards;
}

.signup__status {
  font-size: 0.9375rem;
  margin-top: var(--space-3);
  min-height: 1.5em;
  font-weight: 500;
}
.signup__status[data-state="success"] { color: var(--color-success); }
.signup__status[data-state="error"]   { color: var(--color-error); }

/* ---------- Pillars ---------- */
.pillars {
  padding-block: clamp(4rem, 10vw, 7rem);
  position: relative;
}

.pillars__heading {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: var(--space-3);
}

.pillars__sub {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto var(--space-12);
  font-size: 1.0625rem;
}

.pillars__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .pillars__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.pillar {
  padding: clamp(1.5rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}

.pillar::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at top right, rgba(79, 140, 255, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.pillar:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  background: var(--color-glass-strong);
}
.pillar:hover::before { opacity: 1; }

.pillar__icon {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  color: var(--color-accent-cyan);
}

.pillar__title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.pillar__desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ---------- Secondary CTA ---------- */
.cta {
  padding-block: clamp(3rem, 8vw, 5rem) clamp(4rem, 8vw, 6rem);
  text-align: center;
}

.cta__heading {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.cta__sub {
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto var(--space-8);
  font-size: 1.0625rem;
}

.cta__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.875rem 1.75rem;
  background: var(--gradient-accent);
  color: #0A0B0F;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: transform 0.15s, box-shadow 0.2s, filter 0.2s;
}
.cta__link:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.35);
}
.cta__link:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.cta__link svg { transition: transform 0.2s; }
.cta__link:hover svg { transform: translateX(3px); }

/* ---------- Footer ---------- */
.site-footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ---------- Animations ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive form: stack on small screens ---------- */
@media (max-width: 480px) {
  .signup {
    flex-direction: column;
    border-radius: var(--radius-lg);
    padding: var(--space-3);
  }
  .signup__input {
    padding: 0.875rem 1rem;
    text-align: center;
  }
  .signup__button {
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .aurora__blob { animation: none; }
  .eyebrow__dot { animation: none; }
}