@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;500&display=swap');

:root {
  --black: #000;
  --white: #fff;
  --grey-bg: #f2f2f0;
  --grey-line: #d9d9d5;
  --grey-text: #5b5b57;
  --accent: #2b50ff;
  --font: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pad: clamp(1.25rem, 5vw, 4rem);
}

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

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

html.is-loading {
  overflow: hidden;
}

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 300;
  line-height: 1.6;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul {
  margin: 0;
  padding: 0;
}

ul {
  list-style: none;
}

a,
button {
  font: inherit;
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ---------- Preloader ---------- */

.preloader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: var(--black);
  color: var(--white);
  transition: transform 0.9s var(--ease), opacity 0.9s var(--ease);
}

.preloader.is-done {
  transform: translateY(-100%);
  opacity: 0.4;
  pointer-events: none;
}

.preloader__text {
  display: flex;
  font-size: clamp(2rem, 8vw, 4.5rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1;
}

.preloader__text span {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.6em);
  animation: letter-in 0.6s var(--ease) forwards;
  animation-delay: calc(var(--i) * 90ms + 200ms);
}

.preloader__space {
  width: 0.3em;
}

.preloader__bar {
  width: min(12rem, 40vw);
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.preloader__bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--white);
  transform: translateX(-100%);
  animation: bar-run 1.6s var(--ease) 0.2s forwards;
}

@keyframes letter-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bar-run {
  to {
    transform: translateX(0);
  }
}

/* ---------- Header ---------- */

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem var(--pad);
  color: var(--white);
}

.site-header__brand {
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  font-size: 0.9rem;
}

.site-header__nav a {
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.site-header__nav a:hover {
  opacity: 1;
}

/* ---------- Hero ---------- */

.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 7rem var(--pad) 4rem;
  background: var(--black);
  color: var(--white);
}

.hero__inner {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
}

.hero__title {
  max-width: 17em;
  font-size: clamp(2.1rem, 6.4vw, 5.25rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.hero__text {
  max-width: 52ch;
  margin-top: clamp(1.25rem, 3vw, 2rem);
  font-size: clamp(0.9rem, 0.8rem + 0.35vw, 1.05rem);
  color: rgba(255, 255, 255, 0.72);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.75rem;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.25s, color 0.25s, border-color 0.25s, transform 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn--light:hover {
  background: #e6e6e2;
}

.btn--outline {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--white);
}

.btn--outline:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

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

/* ---------- Sections ---------- */

.section {
  padding-block: clamp(4rem, 10vw, 8rem);
  scroll-margin-top: 0;
}

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

.section--grey {
  background: var(--grey-bg);
}

.section__title {
  max-width: 20ch;
  font-size: clamp(1.75rem, 4.2vw, 3rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.section__intro {
  max-width: 52ch;
  margin-top: 1rem;
  color: var(--grey-text);
}

/* ---------- Services ---------- */

.services {
  margin-top: clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--grey-line);
}

.service {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--grey-line);
}

.service__name {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 500;
}

.service__text {
  max-width: 56ch;
  color: var(--grey-text);
}

@media (min-width: 800px) {
  .service {
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    padding-block: 2.25rem;
  }
}

/* ---------- Closing call to action ---------- */

.closing {
  padding-block: clamp(4rem, 9vw, 7rem);
  background: var(--black);
  color: var(--white);
}

.closing__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.closing__title {
  max-width: 18ch;
  font-size: clamp(1.75rem, 4.5vw, 3.25rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 1.5rem var(--pad);
  background: var(--black);
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
}

/* ---------- Reveal animations ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: var(--d, 0ms);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.js .hero-reveal {
  opacity: 0;
  transform: translateY(32px);
}

.js.is-ready .hero-reveal {
  animation: hero-in 1s var(--ease) forwards;
  animation-delay: var(--d, 0ms);
}

@keyframes hero-in {
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Small screens ---------- */

@media (max-width: 520px) {
  .site-header {
    padding-block: 1.1rem;
  }

  .site-header__nav a[href='#products'] {
    display: none;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn,
  .closing__inner .btn {
    width: 100%;
  }
}

@media (min-width: 1600px) {
  .container,
  .hero__inner {
    max-width: 1400px;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .preloader,
  .preloader__text span,
  .preloader__bar::after,
  .btn {
    transition: none;
    animation: none;
  }

  .preloader__text span {
    opacity: 1;
    transform: none;
  }

  .preloader__bar::after {
    transform: none;
  }

  .js .reveal,
  .js .hero-reveal {
    opacity: 1;
    transform: none;
    transition: none;
    animation: none !important;
  }
}