:root {
  --color-primary: #1e1a4d;
  --color-primary-light: #3c3771; /* lighter tint */
  --color-primary-dark: #141037; /* darker shade */

  --color-accent: #6c5ce7; /* complementary indigo-violet */
  --color-accent-light: #a29bfe;
  --color-accent-dark: #4834d4;

  --color-background: #12102b; /* dark background */
  --color-surface: #2a275d; /* card or container bg */
  --color-border: #3d3970; /* border tone */

  --color-text: #e0e0ff; /* light text for contrast */
  --color-text-muted: #b0b0d0; /* muted text */
  --color-text-inverse: #1e1a4d; /* for light backgrounds */
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

body {
  background-color: var(--color-accent-light);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.container {
  width: 100%;
  max-width: 500px;
}

.card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-primary);
  border-radius: 0.5rem;
  padding: 1.5rem;
  box-shadow: 2px 4px 6px -1px rgba(0, 0, 0, 0.1),
    2px 2px 4px -1px rgba(0, 0, 0, 0.06);
  gap: 1rem;
}

h1,
h2 {
  text-align: center;
}

h2 {
  font-size: 1.3rem;
  color: var(--color-text-muted);
}

.password-display {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

.password-input {
  width: 100%;
  padding: 0.5rem;
  border-radius: 5px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: 1rem;
}

.btn-copy {
  cursor: pointer;
  background-color: var(--color-accent);
  border: none;
  padding: 0.5rem 1rem;
  color: var(--color-text);
  font-weight: 500;
  font-size: 1rem;
  border-radius: 5px;
  transition: all 0.3s;
}

.btn-copy:hover {
  background-color: var(--color-accent-dark);
}

.options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 2rem;
  row-gap: 0.5rem;

  @media screen and (max-width: 405px) {
    grid-template-columns: 1fr;
    row-gap: 1rem;
  }
}

.length-control {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

#range_1 {
  width: 100%;
}
.checkboxs {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.checkboxs input {
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

.checkboxs label {
  cursor: pointer;
}

#hashs {
  flex: 1;
  font-family: inherit;
  font-size: 1rem;
}

.btn-reset {
  margin-top: 0.5rem;
  cursor: pointer;
  background-color: var(--color-accent);
  border: none;
  padding: 0.5rem 1rem;
  color: var(--color-text);
  font-weight: 500;
  font-size: 1rem;
  border-radius: 5px;
  transition: all 0.3s;
}

.btn-reset:hover {
  background-color: var(--color-accent-dark);
}

footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 1rem;
  color: var(--color-text-inverse);
}

footer a {
  color: var(--color-text-inverse);
  text-decoration: none;
  transition: all 0.3s;
}

footer a:hover {
  color: var(--color-text);
}