* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #f0f2f5;
}

.layout {
  display: flex;
  height: 100vh;
}

/* ========== SIDEBARS ========== */
.sidebar {
  width: 250px;
  background: #fff;
  padding: 15px;
  overflow-y: auto;
}

.sidebar.left {
  width: 400px; /* increased from 250px */
  border-right: 1px solid #ccc;
}

.sidebar.right {
  border-left: 1px solid #ccc;
}

.sidebar h2 {
  font-size: 16px;
  margin-bottom: 10px;
}

.friends-list {
  list-style: none;
  padding: 0;
}

.friends-list li {
  padding: 8px;
  border-radius: 6px;
  background: #e6f4ea;
  margin-bottom: 6px;
}

/* ========== MAIN FEED ========== */
.feed {
  flex: 1;
  padding: 30px 400px;
  max-width: 1500px;
  margin: 0 auto;
  overflow-y: auto;
}

.top-bar {
  background: #4267B2;
  color: white;
  padding: 20px;
  margin-bottom: 30px;
  text-align: center;
  border-radius: 20px;
  font-size: 24px;
  font-weight: bold;
}

.post {
  background: white;
  padding: 20px;
  margin-bottom: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.post-header {
  font-weight: bold;
  color: #333;
  font-size: 16px;
}

.time {
  color: #777;
  font-size: 12px;
  margin-left: 5px;
}

.post-content {
  margin: 12px 0;
  font-size: 16px;
  line-height: 1.5;
}

.post-actions {
  margin-top: 10px;
}

.post-actions button {
  margin-right: 10px;
  padding: 8px 8px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background: #e4e6eb;
  font-size: 14px;
}

.post-actions button:hover {
  background: #d8dadf;
}

button:focus {
  outline: 2px solid #4267B2;
}

.comment-input {
  width: 100%;
  padding: 10px;
  border-radius: 20px;
  border: 1px solid #ccc;
  margin-top: 12px;
  font-size: 14px;
}


/* ========== MESSAGE BOX ========== */
.chat-popup {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 300px;
  max-height: 400px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
}

.chat-popup.active {
  display: flex;
}

.chat-header {
  background: #4267B2;
  color: white;
  padding: 10px;
  font-weight: bold;
}

.chat-body {
  padding: 10px;
  height: 200px;
  overflow-y: auto;
}

.chat-input {
  border: none;
  border-top: 1px solid #ccc;
  padding: 10px;
  width: 100%;
  box-sizing: border-box;
}

/* ========== FLOATING BUTTONS ========== */
.floating-chat {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 55px;
  height: 55px;
  background: #3b3b3b;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  cursor: pointer;
  z-index: 1000;
}

.floating-chat img {
  width: 24px;
  height: 24px;
  filter: invert(1);
}

.toggle-friends {
  display: none;
  position: fixed;
  bottom: 90px;
  left: 20px;
  padding: 10px 12px;
  background: #4267B2;
  color: white;
  border: none;
  border-radius: 50px;
  z-index: 1001;
  font-size: 16px;
  cursor: pointer;
}

/* ========== BOTTOM NAVIGATION ========== */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background-color: #ffffff;
  border-top: 1px solid #ccc;
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 -1px 4px rgba(0,0,0,0.1);
}

.tab-item {
  flex: 1;
  text-align: center;
  text-decoration: none;
  color: #444;
  font-size: 12px;
  padding-top: 4px;
}

.tab-item .icon {
  display: block;
  font-size: 20px;
}

.tab-item.active {
  color: #4267B2;
  border-top: 3px solid #4267B2;
}

/* ========== PAGE SECTIONS ========== */
.page {
  display: none;
  padding: 20px;
  margin-bottom: 70px; /* avoid overlap with bottom nav */
}

.page.active {
  display: block;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .sidebar.left, .sidebar.right {
    display: none;
  }

  .layout {
    flex-direction: column;
  }

  .feed {
    padding: 10px;
  }
}

/* Hidden by default */
/* Mobile sidebar behavior */
/* Mobile view sidebar behavior */
@media (max-width: 768px) {
.sidebar.left {
  position: fixed;
  top: 0;
  left: -100%; /* hidden */
  height: 100%;
  background: white;
  z-index: 1000;
  width: 240px;
  transition: left 0.3s ease;
  box-shadow: 2px 0 6px rgba(0,0,0,0.1);
}

.sidebar.left.open {
  left: 0; /* show */
}


  .toggle-friends {
    display: block;
    position: fixed;
    bottom: 90px;
    left: 20px;
    padding: 10px 12px;
    background: #4267B2;
    color: white;
    border: none;
    border-radius: 50px;
    z-index: 1001;
    font-size: 16px;
    cursor: pointer;
  }



  .floating-chat {
    width: 50px;
    height: 50px;
    bottom: 80px;
    right: 15px;
  }

  .floating-chat img {
    width: 22px;
    height: 22px;
  }

  .chat-popup {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 300px;
  max-height: 400px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
}

.chat-popup.active {
  display: flex;
}

.close-chat {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  font-size: 20px;
  color: white;
  cursor: pointer;
}

.chat-header {
  position: relative;
  background: #4267B2;
  color: white;
  padding: 10px;
  font-weight: bold;
}
body.dark-mode {
  background: #121212;
  color: #f1f1f1;
}

body.dark-mode .post,
body.dark-mode .sidebar,
body.dark-mode .chat-popup,
body.dark-mode .settings-panel {
  background: #1e1e1e;
  color: #f1f1f1;
}

}
.container {
  width: 100%;
  max-width: 1200px; /* slightly larger if needed */
  display: flex;
  flex-direction: row;
  position: relative;
}
.sidebar.right {
  position: fixed;
  right: 0;
  top: 0;
  width: 220px;
  height: 100%;
  background-color: #f9f9f9;
  border-left: 1px solid #ddd;
  padding: 10px;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.05);
  overflow-y: auto;
  z-index: 100;
}

.sidebar.right h2 {
  font-size: 18px;
  margin-bottom: 15px;
  color: #333;
}

.ad-box {
  background-color: #fff;
  padding: 12px 14px;
  margin-bottom: 12px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  font-size: 14px;
  color: #444;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.ad-box:hover {
  background-color: #eef2ff;
  transform: scale(1.03);
  cursor: pointer;
}

.message-box {
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
  margin-top: 20px;
  font-size: 15px;
  line-height: 1.6;
}

.message-box input[type="text"] {
  width: 100%;
  margin-top: 15px;
  padding: 10px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 20px;
  box-sizing: border-box;
}
body.dark-mode .message-box {
  background: #1e1e1e;
  color: #f1f1f1;
}