:root {
  --light-color: #f0f0f0;
  --dark-color: #1d1d1d;
  --fields-bg-color: #e2e2e2;
  --light-gray-color: #c8d6e5;
  --gray-color: #a3a3a3;
  --dark-gray-color: #5c5b5b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Nunito', Arial, Helvetica, sans-serif;
  font-size: 10px;
}

html,
body {
  min-height: 100%;
}

body {
  background: var(--primary-color);
  transition: background 0.3s;
}

body.short-break-color {
  --primary-color: #2e86de;
  --secondary-color: #54a0ff;
}

body.long-break-color {
  --primary-color: #10ac84;
  --secondary-color: #1dd1a1;
}

body.pomodoro-color {
  --primary-color: #ee5253;
  --secondary-color: #ff6b6b;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  outline: none;
}

.container {
  width: 100%;
  max-width: 60rem;
  padding: 0 1%;
  margin: 0 auto;
}

.header {
  padding: 1.6rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo,
.logo i {
  font-size: 2rem;
  color: var(--light-color);
  transition: transform 0.3s;
}

.logo:hover i {
  transform: scale(1.3);
}

.btn-settings {
  background: var(--secondary-color);
  padding: 0.5rem 1rem;
  border: 0.2rem solid transparent;
  border-radius: 0.5rem;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--light-color);
  transition: all 0.5s;
}

.btn-settings:hover {
  background: transparent;
  border-color: var(--secondary-color);
}

.btn-settings i {
  font-size: 1.4rem;
  transition: transform 1s;
}

.btn-settings:hover i {
  transform: rotate(360deg);
}

.progress-bar {
  background: var(--secondary-color);
  height: 0.2rem;
  transition: background 0.3s;
}

.progress-bar .progress {
  background: var(--light-color);
  width: 0%;
  height: 100%;
}

.main {
  padding: 6.4rem 2rem 3.2rem;
}

.pomodoro-container {
  background: var(--secondary-color);
  width: 100%;
  padding: 2rem;
  border-radius: 0.5rem;
  transition: background 0.3s;
}

.pomodoro-options {
  display: flex;
  justify-content: center;
}

.pomodoro-options button {
  position: relative;
  background: transparent;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  margin: 0 0.5rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--light-color);
  transition: background 0.5s;
}

.pomodoro-options button.active {
  background: var(--primary-color);
}

.pomodoro-options button:not(.active)::after,
.pomodoro-options button:not(.active)::before {
  content: '';
  position: absolute;
  bottom: 0;
  background: var(--light-color);
  width: 0;
  height: 0.2rem;
  border-radius: 1rem;
  transition: width 0.5s;
}

.pomodoro-options button:not(.active)::before {
  left: 0; 
}

.pomodoro-options button:not(.active)::after {
  right: 0;
}

.pomodoro-options button:not(.active):hover::after,
.pomodoro-options button:not(.active):hover::before {
  width: 100%;
}

.pomodoro-time {
  margin: 1rem 0;
  text-align: center;
  font-size: 12rem;
  color: var(--light-color);
}

.btn-start-container {
  display: flex;
  justify-content: center;
}

.btn-start {
  background: var(--light-color);
  width: 100%;
  max-width: 20rem;
  height: 5rem;
  border-bottom: 0.3rem solid var(--light-gray-color);
  border-radius: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary-color);
  transition: transform 0.3s;
}

.btn-start:active,
.btn-start.active {
  transform: translateY(0.3rem);
  border: none;
}

.modal-settings {
  background: rgba(0, 0, 0, 0.5);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-settings.active {
  display: flex;
}

.settings {
  background: var(--light-color);
  width: 100%;
  max-width: 40rem;
  border-radius: 0.5rem;
  overflow: hidden;
}

.settings-content {
  padding: 1rem 2rem;
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
}

.settings-header h1,
.settings-header i {
  text-transform: uppercase;
  font-size: 2rem;
  color: var(--gray-color);
  transition: color 0.3s;
}

.settings-header i:hover {
  color: var(--dark-gray-color);
}

.setting {
  padding-top: 1rem;
  border-top: 0.1rem solid var(--gray-color);
  margin-bottom: 1.6rem;
}

.setting h2 {
  margin-bottom: 0.8rem;
  font-size: 1.6rem;
  color: var(--dark-gray-color);
}

.setting-times {
  display: flex;
  justify-content: space-between;
}

.setting-time {
  max-width: 10rem;
}

.setting-time h3 {
  margin-bottom: 0.5rem;
  font-size: 1.4rem;
  color: var(--gray-color);
}

.setting-time input {
  background: var(--fields-bg-color);
  width: 100%;
  height: 3rem;
  padding: 0 1rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dark-gray-color);
  outline: none;
}

.settings-footer {
  background: var(--gray-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 4rem;
  padding: 0 2rem;
}

.btn-ok {
  background: var(--dark-gray-color);
  width: 5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--light-color);
  transition: background 0.3s;
}

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

@media (max-width: 410px) {
  .pomodoro {
    display: flex;
    flex-direction: column;
  }

  .pomodoro-options {
    order: 3;
    flex-wrap: wrap;
  }

  .pomodoro-options button + button {
    margin-top: 1.6rem;
  }

  .pomodoro-time {
    order: -1;
    margin-top: 0;
    font-size: 6rem;
  }

  .btn-start {
    order: 2;
    margin-bottom: 2rem;
  }
}