@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: local(""),
    url("assets/fonts/source-sans-pro/SourceSans3-VariableFont_wght.ttf")
      format("truetype-variations");
}

@font-face {
  font-family: "Source Sans 3";
  font-style: italic;
  font-weight: 200 900;
  font-display: swap;
  src: local(""),
    url("assets/fonts/source-sans-pro/SourceSans3-Italic-VariableFont_wght.ttf")
      format("truetype-variations");
}

:root {
  --font-sans: "Source Sans 3", sans-serif;
  --color-primary: #094f9e;
  --color-primary-hover: #083b7a;
  --color-text: #0f172a;
  --color-background: #fff;
  --color-error: #a62d19;
  --color-success: #2e7d32;
  --color-border: #71717a;
  --color-placeholder: #71717a;
  --transition-duration: 0.2s;
  --radius-sm: 0.125rem;
  --radius-md: 0.25rem;
  --shadow-focus: 0 0 0 0.15rem;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text);
  background-color: rgba(9, 79, 158, 0.05);
  background-image: url("assets/images/pattern.svg");
  background-position: center;
  background-size: cover;
}

h1 {
  font-size: clamp(2rem, 1.5vw + 1.7rem, 3rem);
  line-height: 1.2;
  color: var(--color-primary);
  font-weight: 300;
  margin: 0 0 1rem;
}

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

a:hover,
a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

header {
  margin: 2rem 0;
  text-align: center;
}

main {
  max-width: min(30rem, 90vw);
  padding: 2rem;
  border: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-background);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

footer {
  padding: 2rem 0 1rem;
  text-align: center;
}

.form-floating {
  position: relative;
  margin: 2rem 0 1rem;
}

.form-control {
  height: calc(3.25rem + 0.7rem);
  width: 100%;
  padding: 1.35rem 3rem 0.7rem 1.25rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-duration) ease,
    box-shadow var(--transition-duration) ease,
    padding var(--transition-duration) ease;
}

.form-control:focus {
  outline: 0;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus) var(--color-primary);
}

.form-floating > label {
  position: absolute;
  top: 1.1rem;
  left: 1.25rem;
  transform-origin: left center;
  color: var(--color-placeholder);
  pointer-events: none;
  transition: transform var(--transition-duration) ease,
    opacity var(--transition-duration) ease;
}

.form-control:focus ~ label,
.form-control:not(:placeholder-shown) ~ label {
  transform: scale(0.85) translateY(-1.15rem) translateX(0.15rem);
  opacity: 0.8;
}

[data-valid="true"] {
  background-image: url("assets/images/checkmark.svg");
  box-shadow: var(--shadow-focus) var(--color-success);
}

[data-valid="false"] {
  background-image: url("assets/images/xmark.svg");
  box-shadow: var(--shadow-focus) var(--color-error);
}

[data-valid] {
  background-size: 1.5rem;
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

.autocomplete-items {
  position: absolute;
  width: 100%;
  max-height: 15.5rem;
  margin-top: 0.5rem;
  overflow-y: auto;
  border-radius: var(--radius-md);
  background: var(--color-background);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 10;
}

.autocomplete-items div {
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  transition: background-color var(--transition-duration) ease;
}

.autocomplete-items div:hover,
.autocomplete-items .autocomplete-active {
  background-color: #f1f5f9 !important;
}

.error {
  padding: 0.75rem 1.25rem;
  color: var(--color-error);
  background-color: #fef6f5;
}

.btn {
  display: block;
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
  font-family: var(--font-sans);
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-duration) ease,
    transform 0.1s ease;
}

.btn:hover,
.btn:focus-visible {
  background: var(--color-primary-hover);
}

.btn:active {
  transform: scale(0.98);
}

@media (max-width: 50rem) {
  main {
    padding: 1.5rem;
  }

  .form-control {
    padding: 1.1rem 2.5rem 0.6rem 1rem;
  }

  .form-floating > label {
    top: 1rem;
    left: 1rem;
  }

  .form-control:focus {
    padding-top: 1.4rem;
    padding-bottom: 0.625rem;
  }

  .form-control:focus ~ label,
  .form-control:not(:placeholder-shown) ~ label {
    transform: scale(0.85) translateY(-1.5rem) translateX(-0.1rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }

  html {
    scroll-behavior: auto;
  }
}