/* =========================
   Global reset & variables
   ========================= */

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Albert Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: #000000;
  background-color: #ffffff;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
}

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

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

button {
  font-family: inherit;
}

/* Root variables */
:root {
  /* Colors */
  --color-primary-blue: #5AA4EC;
  --color-dark-navy: #0C142A;
  --color-black: #000000;
  --color-white: #ffffff;

  /* Typography (px) */
  --fs-h1: 80px;
  --fs-subheading: 32px;
  --fs-body: 16px;
  --fs-link-button: 18px;
  --fs-small: 14px;
  --fs-tiny: 10px;

  --lh-tight: 1;
  --lh-body: 1.2;

  --ls-tight: -0.03em;

  /* Radii */
  --radius-sm: 12px;
  --radius-md: 12px;
  --radius-xl-section: 120px;

  /* Layout */
  --page-width: 1280px; /* 960 content + 160 side paddings on large screens */

  /* Header */
  --header-height: 96px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-medium: 200ms ease;
}

/* Container: 160px side padding on large screens */
.container {
  width: 100%;
  max-width: var(--page-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 160px;
  padding-right: 160px;
}

/* At <= 1200, side padding 40px */
@media (max-width: 1200px) {
  .container {
    padding-left: 40px;
    padding-right: 40px;
  }
}

/* At <= 768, side padding 24px */
@media (max-width: 768px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  border-radius: var(--radius-md);
  font-size: var(--fs-link-button);
  font-weight: 700;
  line-height: 1;
  letter-spacing: var(--ls-tight);
  border: none;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.btn-icon {
  margin-right: 8px;
  width: 18px;
  height: 18px;
  display: inline-block;
}

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

.btn-primary:hover {
  background-color: #70b2f0;
}

.btn-primary:active {
  background-color: #4b89c4;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-dark-navy);
}

.btn-ghost:hover {
  background-color: rgba(12, 20, 42, 0.06);
}

.btn-ghost:active {
  background-color: rgba(12, 20, 42, 0.12);
}

/* Utility classes */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Page main */
.page-main {
  padding-top: var(--header-height);
}

/* Responsive type sizes */
@media (max-width: 1024px) {
  :root {
    --fs-h1: 52px;
    --fs-subheading: 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --fs-h1: 40px;
    --fs-subheading: 22px;
  }
}