@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

:root {
  --ink-black: #031926;
  --royal-blue: #007bff;
  --royal-blue-06: #007bff99;
  --cyan: #17a2b8;
  --slate: #6c757d;
  --classic-crimson: #d7263d;

  --font-main: "Poppins", sans-serif;
  --text-main: white;
  --text-on-input: black;
  --shadow-input: var(--royal-blue-06);
  --bg-body: var(--ink-black);
  --bg-card-grams: var(--royal-blue);
  --bg-card-kg: var(--cyan);
  --bg-card-oz: var(--slate);
  --text-failed: var(--classic-crimson);
}

* {
  color: var(--text-main);
  font-family: var(--font-main);
  padding: 0;
  margin: 0;
  border: none;
  outline: none;
  box-sizing: border-box;
}

.hidden {
  display: none !important;
}

body {
  background-color: var(--bg-body);
  width: 100%;
  min-height: 100vh;
}
main {
  width: 100%;
  padding: 40px 20px;
}

.weight-converter {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}
.weight-converter__title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 20px;
}
.weight-converter__form {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.weight-converter__label {
  font-size: 1.2rem;
  font-weight: 600;
}
.weight-converter__input {
  color: var(--text-on-input);
  font-size: 1.2rem;
  font-weight: 600;
  width: 100%;
  max-width: 240px;
  padding: 8px 16px;
  border-radius: 8px;
}
.weight-converter__input:focus-visible {
  box-shadow: 0 0 0 4px var(--shadow-input);
}
.weight-converter__failed-message {
  color: var(--text-failed);
  font-size: 1.2rem;
  text-align: center;
  margin-bottom: 20px;
}
.weight-converter__results {
  width: 100%;
  display: grid;
  gap: 10px;
}
.weight-converter__card {
  padding: 16px;
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.weight-converter__card--grams {
  background-color: var(--bg-card-grams);
}
.weight-converter__card--kg {
  background-color: var(--bg-card-kg);
}
.weight-converter__card--oz {
  background-color: var(--bg-card-oz);
}
.weight-converter__card-title,
.weight-converter__card-value {
  font-size: 1.4rem;
  font-weight: 500;
}

@media (min-width: 768px) {
  main {
    padding: 80px 40px;
  }

  .weight-converter {
    max-width: 640px;
  }
  .weight-converter__title {
    font-size: 2.8rem;
    margin-bottom: 30px;
  }
  .weight-converter__form {
    margin-bottom: 30px;
    gap: 15px;
  }
  .weight-converter__input {
    max-width: 320px;
  }
  .weight-converter__failed-message {
    margin-bottom: 30px;
  }
  .weight-converter__results {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  .weight-converter__label,
  .weight-converter__input,
  .weight-converter__failed-message,
  .weight-converter__card-title,
  .weight-converter__card-value {
    font-size: 1.6rem;
  }
}

@media (min-width: 1024px) {
  .weight-converter {
    max-width: 880px;
  }
  .weight-converter__title {
    font-size: 3.2rem;
  }
  .weight-converter__results {
    grid-template-columns: repeat(3, 1fr);
  }
  .weight-converter__label,
  .weight-converter__input,
  .weight-converter__failed-message,
  .weight-converter__card-title,
  .weight-converter__card-value {
    font-size: 1.4rem;
  }
}