/* ============================================================
   BLUE SEAS AI - Design System
   Apple-inspired, Framer/Webflow-level polish
   Fonts: Poppins (headings) + Open Sans (body)
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Brand Blues */
  --blue-primary: #4473ef;
  --blue-deep: #006cf3;
  --blue-sky: #00acfe;

  /* Brand Greens (CTA ONLY) */
  --green-cta: #4cea89;
  --green-hover: #3dd577;

  /* Accents */
  --teal: #48afb5;
  --purple: #6e57ff;
  --orange-functional: #ff8c42;

  /* Neutrals */
  --white: #fefefe;
  --off-white: #f8f9fc;
  --grey-50: #f4f4f6;
  --grey-100: #e8e8ec;
  --grey-200: #d1d1d8;
  --grey-400: #9898b0;
  --grey-600: #6b6b80;
  --grey-800: #2d2d3a;
  --dark: #1a1a1c;
  --darker: #141416;
  --black: #0a0a0b;

  /* Functional */
  --success: #4cea89;
  --warning: #ff8c42;
  --error: #ef4444;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;

  /* Type Scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8rem);
  --text-sm: clamp(0.85rem, 0.8rem + 0.25vw, 0.9rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.065rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2.25vw, 2.75rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 3.75vw, 3.75rem);
  --text-5xl: clamp(2.75rem, 1.75rem + 5vw, 4.5rem);

  /* Spacing (Apple-level whitespace) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;
  --space-section: clamp(5rem, 4rem + 5vw, 8rem);

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-wide: 1400px;
  --nav-height: 72px;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --border-radius-pill: 100px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-xl: 0 24px 60px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 200ms;
  --duration-base: 350ms;
  --duration-slow: 600ms;
}


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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--grey-800);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--blue-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--blue-deep);
}


/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  color: var(--dark);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: 1em;
  max-width: 65ch;
}

.text-lg { font-size: var(--text-lg); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }

.text-gradient {
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-sky));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.eyebrow {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-primary);
  margin-bottom: var(--space-sm);
  display: inline-block;
}


/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.container--wide {
  max-width: var(--max-width-wide);
}

section {
  padding: var(--space-section) 0;
  position: relative;
}

.section--dark {
  background-color: var(--dark);
  color: var(--white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5 {
  color: var(--white);
}

.section--dark p {
  color: var(--grey-400);
}

.section--grey {
  background-color: var(--off-white);
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.flex--between {
  justify-content: space-between;
}

.flex--center {
  justify-content: center;
}

.flex--wrap {
  flex-wrap: wrap;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }


/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.875rem 2rem;
  border-radius: var(--border-radius-pill);
  border: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--green-cta);
  color: var(--dark);
}

.btn--primary:hover {
  background-color: var(--green-hover);
  color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(76, 234, 137, 0.3);
}

.btn--secondary {
  background-color: transparent;
  color: var(--blue-primary);
  border: 1.5px solid var(--blue-primary);
}

.btn--secondary:hover {
  background-color: var(--blue-primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn--dark {
  background-color: var(--dark);
  color: var(--white);
}

.btn--dark:hover {
  background-color: var(--grey-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--ghost {
  background: transparent;
  color: var(--grey-800);
  padding: 0.875rem 1rem;
}

.btn--ghost:hover {
  color: var(--blue-primary);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn--lg {
  padding: 1.1rem 2.5rem;
  font-size: var(--text-base);
}


/* --- Cards --- */
.card {
  background: var(--white);
  border: 1px solid var(--grey-100);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-base) var(--ease-out);
}

.card:hover {
  border-color: var(--grey-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card--dark {
  background: var(--darker);
  border-color: rgba(255,255,255,0.06);
}

.card--dark:hover {
  border-color: rgba(255,255,255,0.12);
}


/* --- Credential Pills --- */
.credential-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.credential-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 0.4rem 0.9rem;
  border-radius: var(--border-radius-pill);
  background: rgba(68, 115, 239, 0.08);
  color: var(--blue-primary);
  white-space: nowrap;
}

.credential-pill--gold {
  background: rgba(255, 183, 0, 0.1);
  color: #d4960a;
}

.credential-pill--green {
  background: rgba(76, 234, 137, 0.1);
  color: #2a9d5c;
}


/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: all var(--duration-base) var(--ease-out);
  background: transparent;
}

.nav.scrolled {
  background: rgba(254, 254, 254, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav__logo img {
  height: 36px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav__link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--grey-800);
  transition: color var(--duration-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--blue-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue-primary);
  transition: width var(--duration-base) var(--ease-out);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--active {
  color: var(--blue-primary);
}

.nav__link--active::after {
  width: 100%;
  background: var(--blue-primary);
}

/* Split text animation */
.split-word {
  display: inline-block;
}

.nav__cta {
  margin-left: var(--space-sm);
}

/* Mobile nav */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  margin: 6px 0;
  transition: all var(--duration-fast) var(--ease-out);
}

@media (max-width: 768px) {
  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-xl) var(--space-lg);
    gap: var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--duration-base) var(--ease-out);
  }

  .nav__links.open {
    transform: translateX(0);
  }

  .nav__link {
    font-size: var(--text-lg);
  }

  /* Keep CTA visible outside hamburger on mobile */
  .nav__cta--mobile {
    display: inline-flex;
    margin-left: auto;
    margin-right: var(--space-sm);
    padding: 0.6rem 1.2rem;
    font-size: var(--text-xs);
  }

  .nav__cta {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }
}

@media (min-width: 769px) {
  .nav__cta--mobile {
    display: none;
  }
}


/* --- Scroll Animations --- */
/* Content visible by default. Only hidden when GSAP is confirmed loaded
   via .gsap-ready class on <html>. No GSAP = no hiding = content visible. */
.gsap-ready .reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 300ms; }
.reveal--delay-4 { transition-delay: 400ms; }

.gsap-ready .reveal--scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal--scale.visible {
  opacity: 1;
  transform: scale(1);
}

.gsap-ready .reveal--left {
  opacity: 0;
  transform: translateX(-40px);
}

.reveal--left.visible {
  opacity: 1;
  transform: translateX(0);
}

.gsap-ready .reveal--right {
  opacity: 0;
  transform: translateX(40px);
}

.reveal--right.visible {
  opacity: 1;
  transform: translateX(0);
}


/* --- Marquee (logo scroll) --- */
.marquee {
  overflow: hidden;
  position: relative;
}

.marquee::before,
.marquee::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.marquee::before {
  left: 0;
  background: linear-gradient(90deg, var(--white), transparent);
}

.marquee::after {
  right: 0;
  background: linear-gradient(270deg, var(--white), transparent);
}

.section--dark .marquee::before {
  background: linear-gradient(90deg, var(--dark), transparent);
}

.section--dark .marquee::after {
  background: linear-gradient(270deg, var(--dark), transparent);
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee__track img {
  width: auto;
  opacity: 0.5;
  filter: grayscale(1);
  transition: all var(--duration-base);
}

.marquee__track img:hover {
  opacity: 1;
  filter: grayscale(0);
}

/* Client logo images override default marquee img sizing */
.marquee__track img.client-logo-img {
  opacity: 0.85;
  filter: none;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}


/* --- Stats Counter --- */
.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--blue-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--grey-600);
  max-width: 160px;
  margin: 0 auto;
}


/* --- Testimonial Carousel --- */
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--grey-100);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.testimonial-card__stars {
  color: #f5a623;
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  letter-spacing: 2px;
}

.testimonial-card__text {
  font-size: var(--text-base);
  color: var(--grey-800);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  font-style: italic;
}

.testimonial-card__author {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--dark);
}

.testimonial-card__role {
  font-size: var(--text-xs);
  color: var(--grey-600);
}

.google-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--grey-600);
}

.google-badge img {
  height: 20px;
  width: auto;
}


/* --- FAQ Accordion --- */
.faq-item {
  border-bottom: 1px solid var(--grey-100);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--dark);
  text-align: left;
  transition: color var(--duration-fast);
}

.faq-item__question:hover {
  color: var(--blue-primary);
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--duration-base) var(--ease-out);
  color: var(--grey-400);
}

.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
  color: var(--blue-primary);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-base) var(--ease-out);
}

.faq-item.open .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer p {
  padding-bottom: var(--space-md);
  color: var(--grey-600);
  line-height: 1.7;
}


/* --- Footer --- */
.footer {
  background: var(--dark);
  color: var(--grey-400);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer a {
  color: var(--grey-400);
  transition: color var(--duration-fast);
}

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

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.footer__brand p {
  max-width: 300px;
  margin-bottom: var(--space-md);
  font-size: var(--text-sm);
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__links a {
  font-size: var(--text-sm);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--text-xs);
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}

.footer__social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  transition: all var(--duration-fast);
}

.footer__social a:hover {
  background: var(--blue-primary);
  color: var(--white);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}


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

.no-wrap {
  white-space: nowrap;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.section-header p {
  margin: var(--space-sm) auto 0;
  color: var(--grey-600);
  max-width: 560px;
}