/* ===========================
   Buoying AI — Styles
   =========================== */

:root {
  --color-primary: #FF6B35;
  --color-primary-hover: #E85A25;
  --color-dark: #1A1D24;
  --color-light: #F7F5F2;
  --color-accent: #2A6FB0;
  --color-accent-hover: #1E5A94;
  --color-white: #FFFFFF;
  --color-gray-100: #E8E6E3;
  --color-gray-200: #D1CECC;
  --color-gray-400: #8A8785;
  --color-gray-600: #4A4745;

  --font-heading: 'Outfit', sans-serif;
  --font-ui: 'Sora', sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;

  --max-width: 1200px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark);
  background: var(--color-light);
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.section-heading {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: var(--space-sm);
  color: var(--color-dark);
}

.section-sub {
  text-align: center;
  color: var(--color-gray-600);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

/* ===========================
   Navigation
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.nav--scrolled {
  background: var(--color-dark);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.nav__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo-img {
  height: 28px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0.8;
  transition: opacity var(--transition);
}

.nav__link:hover {
  opacity: 1;
}

.nav__cta-btn {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition);
}

.nav__cta-btn:hover {
  background: var(--color-primary-hover);
}

.nav__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===========================
   Hero
   =========================== */
.hero {
  background: var(--color-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-md);
  flex: 1;
  display: flex;
  align-items: center;
}

.hero__content {
  max-width: 720px;
}

.hero__logo {
  height: 40px;
  width: auto;
  margin-bottom: var(--space-md);
}

.hero__tagline {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: var(--space-sm);
}

.hero__headline {
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.1;
}

.hero__sub {
  font-size: 1.2rem;
  color: var(--color-gray-400);
  max-width: 560px;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.hero__btn {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 1rem 2.5rem;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  transition: background var(--transition), transform var(--transition);
}

.hero__btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.hero__wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  line-height: 0;
}

.hero__wave svg {
  width: 100%;
  height: 80px;
}

/* ===========================
   What We Do
   =========================== */
.what-we-do {
  padding: var(--space-2xl) 0;
  background: var(--color-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.service-card__icon {
  margin-bottom: var(--space-md);
}

.service-card__title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--color-dark);
}

.service-card__desc {
  color: var(--color-gray-600);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===========================
   Tiers / Pricing
   =========================== */
.tiers {
  padding: var(--space-2xl) 0;
  background: var(--color-white);
}

.tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  align-items: stretch;
}

.tier-card {
  background: var(--color-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.tier-card--featured {
  background: var(--color-dark);
  color: var(--color-white);
  padding-top: calc(var(--space-lg) + 1rem);
}

.tier-card__badge {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.35rem 1.25rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-heading);
  white-space: nowrap;
}

.tier-card__header {
  margin-bottom: var(--space-sm);
}

.tier-card__name {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.tier-card__price {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
}

.tier-card__price span {
  font-size: 1rem;
  font-weight: 400;
  opacity: 0.6;
}

.tier-card__tagline {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-bottom: var(--space-md);
}

.tier-card__features {
  margin-bottom: var(--space-lg);
  flex: 1;
}

.tier-card__features li {
  padding: 0.5rem 0;
  font-size: 0.9rem;
  padding-left: 1.5rem;
  position: relative;
}

.tier-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.tier-card__btn {
  display: block;
  text-align: center;
  padding: 0.85rem;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition);
  background: var(--color-primary);
  color: var(--color-white);
}

.tier-card__btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.tier-card__btn--outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.tier-card__btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ===========================
   Who We Work With (Prize Frame)
   =========================== */
.qualify {
  padding: var(--space-2xl) 0;
  background: var(--color-dark);
  color: var(--color-white);
}

.qualify .section-heading {
  color: var(--color-white);
}

.qualify .section-sub {
  color: var(--color-gray-400);
}

.qualify-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.qualify-card {
  text-align: center;
  padding: var(--space-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
}

.qualify-card:hover {
  border-color: var(--color-primary);
}

.qualify-card__number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.qualify-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.qualify-card__desc {
  font-size: 0.9rem;
  color: var(--color-gray-400);
  line-height: 1.6;
}

.qualify-note {
  text-align: center;
  font-size: 1rem;
  color: var(--color-primary);
  font-weight: 500;
}

/* ===========================
   Who We Are
   =========================== */
.who-we-are {
  padding: var(--space-2xl) 0;
  background: var(--color-light);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  max-width: 800px;
  margin: 0 auto;
}

.team-card {
  text-align: center;
}

.team-card__avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--color-dark);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  overflow: hidden;
}

.team-card__avatar--img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card__name {
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.team-card__role {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.team-card__bio {
  color: var(--color-gray-600);
  font-size: 0.95rem;
  max-width: 300px;
  margin: 0 auto;
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
  padding: var(--space-2xl) 0;
  background: var(--color-primary);
  text-align: center;
}

.cta-section__heading {
  font-size: clamp(2rem, 4vw, 3.5rem);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.cta-section__sub {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  max-width: 560px;
  margin: 0 auto var(--space-lg);
}

.cta-section__btn {
  display: inline-block;
  background: var(--color-white);
  color: var(--color-primary);
  padding: 1rem 2.5rem;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.cta-section__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--color-dark);
  padding: var(--space-lg) 0;
  text-align: center;
}

.footer__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer__logo {
  height: 24px;
  width: auto;
  margin: 0 auto var(--space-sm);
  opacity: 0.6;
}

.footer__copy {
  color: var(--color-gray-400);
  font-size: 0.85rem;
}

/* ===========================
   Scroll Reveal Animations
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.services-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.services-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.tiers-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.tiers-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.team-grid .reveal:nth-child(2) { transition-delay: 0.15s; }
.qualify-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.qualify-grid .reveal:nth-child(3) { transition-delay: 0.2s; }

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
  .services-grid,
  .tiers-grid,
  .qualify-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-grid .service-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-dark);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav__links.active {
    display: flex;
  }

  .nav__mobile-toggle {
    display: flex;
  }

  .nav__cta-btn {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
  }

  .services-grid,
  .tiers-grid,
  .qualify-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .services-grid .service-card:last-child {
    max-width: none;
  }

  .team-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
  }

  .hero__headline {
    font-size: 2.2rem;
  }

  .hero__sub {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --space-lg: 3rem;
    --space-xl: 4rem;
    --space-2xl: 5rem;
  }

  .hero__headline {
    font-size: 1.8rem;
  }
}