:root {
  --overlay: #415a776d;
  --background: #0d1b2a;
  --primary: #1b263b;
  --secondary: #415a77;
  --accent: #e0fe3f;
  --correct: #38c757;
  --error: #d62828;
  --text: #e0e1dd;
  --padding: 20px;
  --gap: 20px;
  --radius: 15px;
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  height: 100vh;
  color: var(--text);
  background-color: var(--background);
  display: flex;
  justify-content: center;
  align-items: center;
}

.overlay {
  background-color: var(--overlay);
  padding: var(--padding);
  border-radius: var(--radius);
}

.form-body {
  background-color: var(--primary);
  width: 400px;
}

.form-body h1 {
  padding: var(--padding);
  background-color: var(--secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dark-mood,
.light-mood {
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  border: none;
  padding: 5px;
  transition: all 0.5s ease;
}
.dark-mood {
  fill: var(--accent);
  background-color: transparent;
  display: none;
}
.dark-mood:hover {
  cursor: pointer;
  transform: rotate(200deg);
  background-color: #aba9a54f;
}
.light-mood {
  fill: var(--accent);
  background-color: transparent;
}
.light-mood:hover {
  cursor: pointer;
  transform: rotate(-90deg);
  background-color: var(--background);
}

.register-form {
  padding: var(--padding);
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.input-field {
  display: flex;
  flex-direction: column;
}
.input-field label {
  font-weight: bold;
  margin-bottom: 3px;
}

.input-container {
  border: 2px solid var(--secondary);
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 40px;
  padding: 5px;
  border-radius: 5px;
}
.input-container input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  border-radius: 3px;
  padding: 10px 30px;
}

.input-container *:not(input) {
  z-index: 1;
}
.error-icon {
  fill: var(--error);
  display: none;
}
.correct-icon {
  fill: var(--correct);
  display: none;
}

.pass-btn {
  background-color: transparent;
  border: none;
  border-radius: 50%;
  padding: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.pass-btn:hover {
  cursor: pointer;
  background-color: #f0ede6;
}
.pass-btn:active {
  background-color: lightgray;
}

.hide-password {
  display: none;
}

.slider {
  background-color: var(--secondary);
  width: 100%;
  height: 6px;
  border-radius: 50px;
  margin: 7px 0 3px 0;
  overflow: hidden;
}
.portion {
  width: 0;
  height: 100%;
  background-color: var(--correct);
}

.password-constraints {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 13px;
  color: var(--error);
  padding: 5px;
}
.check-mark {
  visibility: hidden;
}
.done {
  color: var(--correct);
}
.done .check-mark {
  visibility: visible;
}

.invalid-password {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 10px;
  color: var(--error);
  fill: var(--error);
  background-color: white;
  box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.3);
  padding: 9px;
  width: calc(100% + 20px);
  border-radius: 3px;
  position: absolute;
  bottom: -47px;
  left: -10px;
  transform: scaleX(0.95);
  transition: all 0.5s ease;
  display: none;
}
.up-triangle {
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid white;
  position: absolute;
  bottom: -11px;
  display: none;
}
.appear {
  display: flex;
  transform: scaleX(1);
}

.error-message {
  color: var(--error);
  font-size: 13px;
}

.submit-btn {
  padding: 10px;
  border-radius: 5px;
  font-size: 18px;
  background-color: var(--accent);
  color: var(--primary);
  border: none;
}
.submit-btn:hover {
  cursor: pointer;
  opacity: 0.95;
}
.submit-btn:active {
  transform: translateY(2px);
}