:root {
  --blue: hsl(219, 85%, 26%);
  --red: hsl(1, 90%, 64%);
  --white: hsl(0, 0%, 100%);
  --very-light-grayish-blue: hsl(210, 60%, 98%);
  --light-grayish-blue-1: hsl(211, 68%, 94%);
  --light-grayish-blue-2: hsl(205, 33%, 90%);
  --grayish-blue: hsl(219, 14%, 63%);
  --dark-grayish-blue: hsl(219, 12%, 42%);
  --very-dark-blue: hsl(224, 21%, 14%);
}

html {
  font-size: 62.5%;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, Segoe UI, Roboto,
    Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--very-light-grayish-blue);
  color: var(--very-dark-blue);
}

.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 2.4rem 1.6rem 4.8rem;
}

.header {
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 2.4rem;
  border-radius: 1.2rem 1.2rem 0 0;
  border: 0.1rem solid var(--light-grayish-blue-2);
  border-bottom: none;
}

.title {
  font-size: 1.25rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.badge {
  background: var(--blue);
  color: var(--white);
  padding: 0.2rem 1rem;
  border-radius: 0.8rem;
  font-size: 0.85rem;
  font-weight: 800;
}

.mark-all {
  background: transparent;
  border: none;
  color: var(--dark-grayish-blue);
  font-weight: 600;
  cursor: pointer;
}
.mark-all:hover,
.mark-all:focus-visible {
  color: var(--blue);
  text-decoration: underline;
}

.notifications {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--white);
  border: 0.1rem solid var(--light-grayish-blue-2);
  border-top: none;
  border-radius: 0 0 1.2rem 1.2rem;
}

.notification {
  display: grid;
  grid-template-columns: 4.8rem 1fr;
  gap: 1.6rem;
  padding: 1.6rem 2.4rem;
  align-items: start;
  border-top: 0.1rem solid var(--very-light-grayish-blue);
  position: relative;
}
.notification:first-child {
  border-top: none;
}
.notification.unread {
  background: var(--very-light-grayish-blue);
}

.notification__focus {
  position: absolute;
  inset: 0;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
}
.notification__focus:focus-visible {
  outline: 0.3rem solid var(--light-grayish-blue-1);
  border-radius: 0.8rem;
}

.avatar {
  border-radius: 50%;
  width: 4.8rem;
  height: 4.8rem;
}

.notification__content {
  min-width: 0;
}
.notification__content.with-preview {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1.6rem;
}

.notification__text {
  margin: 0 0 0.6rem;
  line-height: 1.4;
  color: var(--dark-grayish-blue);
}
.notification__text .user {
  color: var(--very-dark-blue);
}
.notification__text .link {
  color: var(--dark-grayish-blue);
  font-weight: 800;
  text-decoration: none;
}
.notification__text .link--accent {
  color: var(--blue);
  font-weight: 800;
}
.notification__text .link:hover,
.notification__text .link:focus-visible {
  color: var(--blue);
  text-decoration: underline;
}

.dot {
  display: inline-block;
  width: 0.8rem;
  height: 0.8rem;
  background: var(--red);
  border-radius: 50%;
  margin-left: 0.8rem;
  vertical-align: middle;
}

.time {
  color: var(--grayish-blue);
  font-size: 0.95rem;
}

.message {
  margin: 1.2rem 0 0;
  border: 0.1rem solid var(--light-grayish-blue-2);
  border-radius: 0.8rem;
  padding: 1.2rem;
  color: var(--dark-grayish-blue);
  background: var(--white);
}

.preview {
  width: 8rem;
  height: 8rem;
  border-radius: 0.8rem;
  object-fit: cover;
  cursor: pointer;
}
.preview:hover,
.preview:focus-visible {
  outline: 0.2rem solid var(--blue);
}

@media (max-width: 64rem) {
  .container {
    padding: 1.6rem 0 3.2rem;
  }
  .header {
    border-radius: 0;
  }
  .notifications {
    border-radius: 0;
  }
  .title {
    font-size: 1.125rem;
  }
}