:root {
  --color-bg: #1A1A1A;
  --color-surface: rgb(40, 40, 40);
  --color-text: #ffffff;
  --color-primary: #bad739;
  --color-warning: #ff6b6b;
  --form-gap: 0.5rem;
  --input-padding: 0.6rem;
}

* {
  box-sizing: border-box;
}

body {
    margin: auto;
    min-height: 100vh;
    width: min(350px, 98%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: Verdana, Arial, sans-serif;
}

/* Header part */
header {
  text-align: center;
  margin-bottom: 1.5rem;
}

#title {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

#progress-info {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-primary);
}

p, li {
  font-size: 0.8rem;
  color: #999;
}

/* form */
#form {
  display: flex;
  flex-direction: column;
  gap: var(--form-gap);
  background-color: var(--color-surface);
  padding: 2rem;
  border-radius: 8px;
  width: min(90vw, 350px);
}

.success-message {
  gap: var(--form-gap);
  background-color: var(--color-surface);
  padding: 2rem;
  border-radius: 8px;
  width: min(90vw, 350px);
  border: 3px solid var(--color-primary);
}

label {
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

input {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid #333;
  border-radius: 4px;
  padding: var(--input-padding);
  font-size: 1rem;
}

input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.warning {
  margin-top: calc(-1*var(--form-gap));
  color: var(--color-warning);
  font-size: 0.8rem;
  padding-left: var(--input-padding);
}

.main-button {
  margin-top: 1rem;
  padding: 0.7rem;
  background-color: var(--color-primary);
  color: #121212;
  border: none;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
}
.main-button:hover {
  filter: brightness(1.1);
}