/* ================================================================
   RoninAI — style.css
   Brand palette, layout, components, animations
   ================================================================ */

/* ----------------------------------------------------------------
   CSS CUSTOM PROPERTIES (Design Tokens)
   Edit colors, fonts, and spacing here first.
---------------------------------------------------------------- */
:root {
  /* Colors */
  --color-bg:         #0a0a0a;
  --color-surface:    #111111;
  --color-surface-2:  #1a1a1a;
  --color-text:       #ffffff;
  --color-muted:      #888888;
  --color-border:     #222222;
  --color-accent:     #22D3EE;   /* cyan */
  --color-accent-dim: rgba(34, 211, 238, 0.08);
  --color-accent-glow: rgba(34, 211, 238, 0.35);

  /* Typography */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'Outfit', system-ui, sans-serif;

  /* Spacing scale */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition: 0.25s ease;
  --transition-slow: 0.45s ease;

  /* Glow effect */
  --glow-sm: 0 0 12px rgba(34, 211, 238, 0.4), 0 0 24px rgba(34, 211, 238, 0.15);
  --glow-md: 0 0 18px rgba(34, 211, 238, 0.55), 0 0 40px rgba(34, 211, 238, 0.2);
}


/* ----------------------------------------------------------------
   RESET & BASE
---------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}


/* ----------------------------------------------------------------
   LAYOUT UTILITIES
---------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.desktop-only {
  display: none;
}

@media (min-width: 768px) {
  .desktop-only { display: inline; }
}


/* ----------------------------------------------------------------
   SCROLL ANIMATION — fade-in-up
   JS adds .is-visible when element enters viewport
---------------------------------------------------------------- */
.fade-in-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children of a grid by adding delay via nth-child */
.services-grid .fade-in-up:nth-child(2),
.pricing-grid  .fade-in-up:nth-child(2),
.value-grid    .fade-in-up:nth-child(2) { transition-delay: 0.08s; }

.services-grid .fade-in-up:nth-child(3),
.pricing-grid  .fade-in-up:nth-child(3),
.value-grid    .fade-in-up:nth-child(3) { transition-delay: 0.16s; }

.pricing-grid .fade-in-up:nth-child(4) { transition-delay: 0.24s; }
.pricing-grid .fade-in-up:nth-child(5) { transition-delay: 0.32s; }
.value-grid   .fade-in-up:nth-child(4) { transition-delay: 0.24s; }


/* ----------------------------------------------------------------
   BUTTONS
---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

/* Primary: solid cyan fill */
.btn-primary {
  background-color: var(--color-accent);
  color: #000000;
  border: 1.5px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: #38e8ff;
  border-color: #38e8ff;
}

/* Ghost: transparent with white border */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Outline: cyan border, transparent fill */
.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent-dim);
}

/* Large variant */
.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}


/* ----------------------------------------------------------------
   SECTION HEADERS (shared across sections)
---------------------------------------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
  opacity: 0.8;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1.15;
}

.section-subtitle {
  margin-top: var(--space-sm);
  color: var(--color-muted);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1rem;
  line-height: 1.7;
}


/* ----------------------------------------------------------------
   NAVBAR
---------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: background var(--transition), backdrop-filter var(--transition), padding var(--transition), border-bottom var(--transition);
}

/* JS adds .scrolled class on scroll */
.navbar.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.85rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

/* Logo */
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo-ronin { color: var(--color-text); }
.logo-ai    { color: var(--color-accent); }

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-left: auto;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--color-text);
}

/* Nav CTA button */
.nav-cta {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition);
}

.nav-cta:hover {
  background-color: var(--color-accent-dim);
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* Hamburger → X animation */
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }


/* ----------------------------------------------------------------
   HERO
---------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 6rem;
  overflow: hidden;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center top;
}

/* Particle canvas fills the hero */
#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Dark gradient fade at hero bottom so content transitions smoothly */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 220px;
  background: linear-gradient(to bottom, transparent, var(--color-bg));
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero-terminal {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-muted);
  letter-spacing: 0;
  margin-bottom: var(--space-md);
}

.hero-headline {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-md);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-muted);
  line-height: 1.65;
  max-width: 560px;
  margin-bottom: var(--space-lg);
}

.hero-ctas {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  align-items: center;
}


/* ----------------------------------------------------------------
   TICKER BAR
---------------------------------------------------------------- */
.ticker-bar {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
  background: var(--color-surface);
  overflow: hidden;
}

.ticker-track {
  overflow: hidden;
}

.ticker-content {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  animation: ticker-scroll 40s linear infinite;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.ticker-sep {
  color: var(--color-border);
  font-size: 1.1rem;
  flex-shrink: 0;
  padding: 0 0.25rem;
}

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}


/* ----------------------------------------------------------------
   SERVICE CARDS
---------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Shared card base */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.08);
}

.card-icon {
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.card-body {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.55rem;
  letter-spacing: 0.02em;
}

.card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.01em;
  transition: opacity var(--transition);
  display: inline-block;
}

.card-link:hover {
  opacity: 0.75;
}


/* ----------------------------------------------------------------
   HOW IT WORKS
---------------------------------------------------------------- */
.how-it-works {
  background: var(--color-surface);
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
}

@media (min-width: 768px) {
  .steps-grid {
    /* 3 steps + 2 connectors */
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: var(--space-md);
  }
}

.step {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
}

.step:hover {
  border-color: rgba(34, 211, 238, 0.3);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
  display: block;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.step-body {
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.step-connector {
  display: none;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .step-connector { display: flex; }
}


/* ----------------------------------------------------------------
   PRICING CARDS
---------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
}

/* Featured "Crescimento" card — cyan glow tint */
.pricing-card--featured {
  border-color: var(--color-accent);
  background: linear-gradient(145deg, #111 0%, rgba(34, 211, 238, 0.05) 100%);
  box-shadow: 0 0 32px rgba(34, 211, 238, 0.1);
  position: relative;
}

.pricing-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  display: block;
}

.pricing-badge--featured {
  color: var(--color-accent);
}

.pricing-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.pricing-desc {
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: var(--space-md);
}

.pricing-features {
  flex: 1;
  margin-bottom: var(--space-lg);
}

.pricing-features li {
  font-size: 0.875rem;
  color: var(--color-muted);
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Checkmark before each feature */
.pricing-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-cta {
  width: 100%;
  text-align: center;
}


/* ----------------------------------------------------------------
   FOUNDER / ABOUT
---------------------------------------------------------------- */
.founder {
  background: var(--color-surface);
}

.founder-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: flex-start;
  max-width: 720px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .founder-inner {
    flex-direction: row;
    align-items: center;
  }
}

/* Photo placeholder box */
.founder-photo-placeholder {
  width: 180px;
  height: 180px;
  min-width: 180px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.founder-photo-placeholder span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  letter-spacing: 0.04em;
}

/* Real photo — uncomment class usage in HTML */
.founder-photo {
  width: 180px;
  height: 180px;
  min-width: 180px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.founder-text {
  flex: 1;
}

.founder-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.founder-role {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-md);
}

.founder-bio {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}


/* ----------------------------------------------------------------
   FAQ ACCORDION
---------------------------------------------------------------- */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--space-md) 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  background: none;
  border: none;
  font-family: var(--font-body);
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}

/* Rotate + to × when open */
.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

/* Smooth max-height animation */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.38s ease;
}

.faq-answer-inner {
  padding-bottom: var(--space-md);
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}


/* ----------------------------------------------------------------
   FINAL CTA SECTION
---------------------------------------------------------------- */
.cta-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.cta-headline {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.cta-sub {
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.cta-terminal {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  margin-top: var(--space-md);
  opacity: 0.6;
}


/* ----------------------------------------------------------------
   FOOTER
---------------------------------------------------------------- */
.footer {
  padding: var(--space-xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .footer-top {
    grid-template-columns: 1fr auto auto;
    align-items: start;
  }
}

.footer-brand .nav-logo {
  font-size: 1.3rem;
  display: inline-block;
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-nav a {
  font-size: 0.875rem;
  color: var(--color-muted);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--color-text);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-email {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.footer-email:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-md);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}


/* ----------------------------------------------------------------
   RESPONSIVE — MOBILE MENU
---------------------------------------------------------------- */
@media (max-width: 767px) {

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 var(--space-md) var(--space-md);
    background: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link,
  .nav-cta {
    display: block;
    padding: var(--space-sm) 0;
    font-size: 1rem;
  }

  .nav-cta {
    border: none;
    color: var(--color-accent);
    padding-left: 0;
  }

  /* Pricing grid horizontal scroll on mobile */
  .pricing-grid {
    grid-template-columns: 280px;
    overflow-x: auto;
    display: flex;
    flex-wrap: nowrap;
    gap: var(--space-md);
    padding-bottom: var(--space-sm);
    scroll-snap-type: x mandatory;
  }

  .pricing-card {
    min-width: 280px;
    scroll-snap-align: start;
  }

}


/* ----------------------------------------------------------------
   ACCESSIBILITY — reduce motion
---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html { scroll-behavior: auto; }

  .faq-answer {
    transition: none;
  }

  .ticker-content {
    animation: none;
  }
}