@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;800&display=swap");

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  transition: background-color 0.5s ease, color 0.5s ease,
    border-color 0.5s ease, box-shadow 0.5s ease;
}

:root {
  --body-bg: hsl(210, 60%, 98%);
  --board-bg: hsl(0, 0%, 100%);
  --primary-text: hsl(219, 12%, 42%);
  --user-name: hsl(224, 21%, 14%);
  --time-text: hsl(219, 14%, 63%);
  --count-text: hsl(205, 33%, 90%);
  --msg-border: hsl(211, 68%, 94%);
  --red: hsl(1, 90%, 64%);
  --blue: hsl(219, 85%, 26%);
}

body.dark-mode {
  --body-bg: hsl(230, 17%, 14%);
  --board-bg: hsl(228, 28%, 20%);
  --primary-text: hsl(0, 0%, 100%);
  --user-name: hsl(0, 0%, 100%);
  --time-text: hsl(0, 0%, 100%);
  --msg-border: hsl(228, 25%, 27%);
  --blue: hsl(219, 85%, 56%);
  --count-text: hsl(228, 28%, 25%); /* Darker hover background for dark mode */
}

body {
  min-height: 100vh;
  background: var(--body-bg);
  font-size: 14px;
  font-weight: 500;
  font-family: "Plus Jakarta Sans", sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  animation: fadeUp 0.5s ease-in-out;
  transition: background-color 0.5s ease;
}

body main {
  max-width: 620px;
  background: var(--board-bg);
  padding: 1.5rem 1rem 0 1rem;
  border-radius: 1rem;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
  transition: background-color 0.5s ease, box-shadow 0.4s ease,
    transform 0.4s ease;
}

main header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.header-buttons {
  display: flex;
  align-items: center;
}

header h1 {
  font-size: 20px;
  color: var(--user-name);
}

header h1 .count {
  color: var(--count-text);
  background: var(--blue);
  border-radius: 0.3rem;
  padding: 0.03rem 0.5rem;
  margin-left: 5px;
  font-weight: 600;
  font-size: 16px;
  text-align: center;
}

header button {
  color: var(--primary-text);
  background: transparent;
  font-size: 14px;
  font-family: "Plus Jakarta Sans", sans-serif;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: color 0.3s ease, transform 0.2s ease, background-color 0.5s ease;
}

.theme-toggle {
  margin-top: 2px;
  margin-left: 0.5rem;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative; /* Added for positioning control */
}

.theme-toggle img {
  width: 18px;
  height: 18px;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: filter 0.5s ease;
  display: block;
}

body.dark-mode .theme-toggle img {
  filter: invert(1);
}

main a {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  text-decoration: none;
  line-height: 1.3;
  border-radius: 0.5rem;
  padding: 1rem;
  margin: 0.6rem 0;
  transition: all 0.3s ease;
}

a.unread {
  background: var(--body-bg);
}

a:hover {
  background: var(--count-text);
}

a img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: transform 0.3s ease;
}

a:hover img {
  transform: scale(1.05);
}

a .text-content p {
  color: var(--primary-text);
}

p .user {
  color: var(--user-name);
  font-weight: 800;
  margin-right: 0.2rem;
}

p .activity {
  font-weight: 800;
  margin: 0 0.2rem;
}

p .chess {
  color: var(--blue);
}

p .dot {
  display: inline-block;
  background: var(--red);
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  margin-left: 0.1rem;
  animation: pulse 2s cubic-bezier(0, 0, 0.2, 1) infinite;
  box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.7);
}

p span {
  transition: color 0.3s ease;
}

p span:hover {
  color: var(--blue);
}

.text-content .time {
  color: var(--time-text);
  margin-top: 0.1rem;
}

.text-content .private {
  border: 1px solid var(--msg-border);
  border-radius: 0.3rem;
  padding: 1rem;
  margin-top: 0.5rem;
  transition: all 0.3s ease;
}

.text-content .private:hover {
  border-color: var(--blue);
  box-shadow: 0 0.2rem 0.5rem rgba(0, 0, 0, 0.05);
}

a .picture {
  margin-left: auto;
}

@media (min-width: 620px) {
  body main {
    margin: 3rem 0;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ping {
  75%,
  100% {
    transform: scale(3);
    opacity: 0;
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.7);
  }

  70% {
    box-shadow: 0 0 0 5px rgba(255, 82, 82, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}