:root {
  /* Matching color palette from index.css */
  --background-dark: #1a2238;
  --background-light: #f8f9fa;
  --text-dark: #e9e9ea;
  --text-light: #2c3e50;
  --primary-color: #3498db;
  --secondary-color: #2980b9;
  --accent-color: #9b59b6;
  --success-color: #2ecc71;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  --info-color: #3498db;
  --card-bg-dark: #243047;
  --card-bg-light: #ffffff;
  --border-dark: #34495e;
  --border-light: #dee2e6;
  --footer-bg-dark: #15192d;
  --footer-bg-light: #e9ecef;
  --shadow-dark: 0 5px 15px rgba(0, 0, 0, 0.3);
  --shadow-light: 0 5px 15px rgba(0, 0, 0, 0.1);
  --gradient-dark: linear-gradient(145deg, #1e2a45, #243047);
  --gradient-light: linear-gradient(145deg, #f0f0f0, #ffffff);
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
  --transition-slow: 0.8s ease;
  --border-radius-sm: 5px;
  --border-radius-md: 8px;
  --border-radius-lg: 15px;
  --border-radius-xl: 30px;
  --font-family: "Montserrat", sans-serif;
  --z-index-preloader: 9999;
  --z-index-modal: 2000;
  --z-index-header: 1000;
  --z-index-dropdown: 100;
  --z-index-tooltip: 50;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--background-dark);
  background-image: radial-gradient(
      rgba(52, 152, 219, 0.05) 1px,
      transparent 1px
    ),
    radial-gradient(rgba(52, 152, 219, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: 0 0, 25px 25px;
  color: var(--text-dark);
  transition: background var(--transition-medium),
    color var(--transition-medium);
  margin: 0;
  overflow-x: hidden;
  line-height: 1.6;
}

html.light body {
  background: var(--background-light);
  color: var(--text-light);
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
}

.chat-wrapper {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}

/* Chat Specific Styles */
.chat-container {
  width: 100%;
  height: 70vh;
  background: var(--gradient-dark);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-dark);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-dark);
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium);
  position: relative;
}

html.light .chat-container {
  background: var(--gradient-light);
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-light);
}

.chat-container:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

html.light .chat-container:hover {
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.chat-header {
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.chat-header h1 i {
  font-size: 1.8rem;
  animation: pulse 2s infinite;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 8px 15px;
  border-radius: var(--border-radius-md);
  backdrop-filter: blur(5px);
}

#logout-btn {
  background-color: transparent;
  border: 1px solid white;
  color: white;
  padding: 5px 10px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

#logout-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.login-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
  gap: 15px;
}

.login-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.login-spinner i {
  font-size: 3rem;
  color: var(--primary-color);
}

.login-spinner p {
  color: var(--text-dark);
  font-size: 1.2rem;
}

html.light .login-spinner p {
  color: var(--text-light);
}

.login-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  color: var(--danger-color);
}

.login-error i {
  font-size: 3rem;
}

.login-error a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: bold;
}

.login-error a:hover {
  text-decoration: underline;
}

.chat-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px;
  gap: 20px;
  position: relative;
}

/* Modify the messages-container to ensure scrollbar is visible */
.messages-container {
  flex: 1;
  overflow-y: scroll !important; /* Force scrollbar to always be visible */
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  will-change: transform;
  contain: content;
  scroll-behavior: smooth;
  position: relative;
  max-height: calc(70vh - 140px); /* Set explicit max-height */
  min-height: 300px; /* Ensure minimum height */
  border: 1px solid var(--border-dark); /* Add border to make container visible */
  border-radius: var(--border-radius-md);
  background-color: rgba(0, 0, 0, 0.1); /* Slight background for visibility */
}

html.light .messages-container {
  border-color: var(--border-light);
  background-color: rgba(0, 0, 0, 0.03);
}

/* Enhance scrollbar visibility */
.messages-container::-webkit-scrollbar {
  width: 12px !important; /* Make scrollbar wider */
  background-color: rgba(0, 0, 0, 0.2) !important;
  border-radius: 6px !important;
}

.messages-container::-webkit-scrollbar-thumb {
  background-color: var(--primary-color) !important;
  border-radius: 6px !important;
  border: 2px solid rgba(0, 0, 0, 0.2) !important; /* Add border for better visibility */
}

.messages-container::-webkit-scrollbar-thumb:hover {
  background-color: var(--secondary-color) !important;
}

/* Add Firefox scrollbar styling */
.messages-container {
  scrollbar-width: thin;
  scrollbar-color: var(--primary-color) rgba(0, 0, 0, 0.2);
}

/* Add scrollbar styling */
.messages-container::-webkit-scrollbar {
  width: 8px;
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}

.messages-container::-webkit-scrollbar-thumb {
  background-color: var(--primary-color);
  border-radius: 4px;
}

.messages-container::-webkit-scrollbar-thumb:hover {
  background-color: var(--secondary-color);
}

/* Add a style for history notification */
.message.history-notice {
  align-self: center;
  background: rgba(52, 152, 219, 0.2);
  color: var(--primary-color);
  max-width: 90%;
  text-align: center;
  border-radius: var(--border-radius-md);
  font-style: italic;
  padding: 8px 15px;
}

html.light .message.history-notice {
  background: rgba(52, 152, 219, 0.1);
}

/* Scroll buttons styles */
.scroll-controls {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 10;
}

.scroll-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border: none;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--transition-medium),
    transform var(--transition-medium);
  box-shadow: var(--shadow-dark);
}

.scroll-btn.visible {
  opacity: 0.7;
  transform: scale(1);
}

.scroll-btn:hover {
  opacity: 1;
  transform: scale(1.1);
}

.scroll-btn.active {
  background: linear-gradient(135deg, var(--success-color), #27ae60);
}

/* New message notification */
.new-message-notification {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  padding: 8px 15px;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  box-shadow: var(--shadow-dark);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px) translateX(-50%);
  transition: opacity var(--transition-medium),
    transform var(--transition-medium);
  z-index: 10;
}

.new-message-notification.hidden {
  opacity: 0;
  transform: translateY(20px) translateX(-50%);
  pointer-events: none;
}

.new-message-notification:not(.hidden) {
  opacity: 1;
  transform: translateY(0) translateX(-50%);
}

.new-message-notification i {
  animation: bounce 1s infinite;
}

.message {
  max-width: 80%;
  padding: 12px 15px;
  border-radius: var(--border-radius-md);
  position: relative;
  word-wrap: break-word;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  animation: fadeIn 0.3s ease-out forwards;
}

.message-info {
  font-size: 0.8rem;
  margin-bottom: 5px;
  font-weight: 600;
  display: flex;
  align-items: center;
}

.user-type {
  font-size: 0.7rem;
  padding: 2px 5px;
  border-radius: 3px;
  margin-left: 5px;
}

.user-type.user {
  background-color: rgba(52, 152, 219, 0.2);
  color: var(--primary-color);
}

.user-type.master {
  background-color: rgba(155, 89, 182, 0.2);
  color: var(--accent-color);
}

.message.sent {
  align-self: flex-end;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border-bottom-right-radius: 0;
}

.message.received {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dark);
  border-bottom-left-radius: 0;
}

html.light .message.received {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-light);
}

.message-timestamp {
  font-size: 0.7rem;
  opacity: 0.7;
  text-align: right;
  margin-top: 5px;
}

.message-input-container {
  display: flex;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  padding: 10px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-dark);
}

html.light .message-input-container {
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-light);
}

#message-input {
  flex: 1;
  padding: 12px 15px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-dark);
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-dark);
  font-size: 1rem;
  transition: all var(--transition-medium);
}

html.light #message-input {
  background-color: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-light);
  color: var(--text-light);
}

#message-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.3);
}

#send-btn {
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border: none;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all var(--transition-medium);
  box-shadow: var(--shadow-dark);
}

#send-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.hidden {
  display: none !important;
}

/* System message styling */
.message.system {
  align-self: center;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-dark);
  max-width: 90%;
  text-align: center;
  border-radius: var(--border-radius-md);
  font-style: italic;
  padding: 8px 15px;
}

html.light .message.system {
  background: rgba(0, 0, 0, 0.1);
  color: var(--text-light);
}

/* Additional animations */
@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* Footer Styles */
.footer {
  background-color: var(--footer-bg-dark);
  color: var(--text-dark);
  padding: 60px 0 30px;
  margin-top: 60px;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color),
    var(--primary-color)
  );
  background-size: 200% 100%;
  animation: gradientMove 5s linear infinite;
}

html.light .footer {
  background-color: var(--footer-bg-light);
  color: var(--text-light);
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.footer-logo i {
  font-size: 1.8rem;
  animation: pulse 2s infinite;
}

.footer-description {
  margin-bottom: 20px;
  line-height: 1.6;
}

.footer-social {
  display: flex;
  gap: 15px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.social-icon::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--secondary-color),
    var(--primary-color)
  );
  opacity: 0;
  transition: opacity var(--transition-medium);
  z-index: -1;
}

.social-icon:hover::before {
  opacity: 1;
}

.social-icon:hover {
  transform: translateY(-5px) rotate(360deg);
  box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.footer-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-color);
  position: relative;
  display: inline-block;
}

.footer-title::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-medium);
}

.footer-section:hover .footer-title::after {
  width: 100%;
}

.footer-links {
  list-style: none;
}

.footer-link {
  margin-bottom: 10px;
  transform: translateX(0);
  transition: transform var(--transition-medium);
}

.footer-link a {
  color: var(--text-dark);
  text-decoration: none;
  transition: all var(--transition-medium);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-link a i {
  transition: transform var(--transition-medium);
}

html.light .footer-link a {
  color: var(--text-light);
}

.footer-link a:hover {
  color: var(--primary-color);
}

.footer-link a:hover i {
  transform: translateX(5px);
}

.footer-link:hover {
  transform: translateX(5px);
}

.footer-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  transition: transform var(--transition-medium);
}

.footer-contact:hover {
  transform: translateX(5px);
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: transform var(--transition-medium);
}

.footer-contact:hover .contact-icon {
  transform: rotate(15deg);
}

.contact-info {
  flex: 1;
}

.contact-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-medium);
}

.footer-contact:hover .contact-label {
  color: var(--primary-color);
}

html.light .contact-label {
  color: rgba(33, 37, 41, 0.7);
}

.contact-value {
  font-weight: 600;
}

.contact-value a {
  color: var(--text-dark);
  text-decoration: none;
  transition: color var(--transition-medium);
}

html.light .contact-value a {
  color: var(--text-light);
}

.contact-value a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

html.light .footer-bottom {
  border-top: 1px solid rgba(33, 37, 41, 0.1);
}

.copyright {
  font-size: 0.9rem;
  position: relative;
  display: inline-block;
}

.copyright::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary-color);
  transition: width var(--transition-medium);
}

.copyright:hover::after {
  width: 100%;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes gradientMove {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Responsive Styles */
@media (max-width: 992px) {
  .chat-wrapper {
    padding: 20px;
  }

  .chat-container {
    height: 60vh;
  }

  .scroll-controls {
    right: 10px;
  }

  .scroll-btn {
    width: 35px;
    height: 35px;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 15px 20px;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--background-dark);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 80px 40px;
    transition: all 0.4s ease;
    z-index: 1001;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
  }

  html.light .nav-menu {
    background: var(--background-light);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-link {
    margin: 15px 0;
    font-size: 1.2rem;
  }

  .mobile-menu-btn {
    display: block;
  }

  .theme-switch {
    margin: 20px 0;
  }

  .chat-container {
    height: 70vh;
  }

  .message {
    max-width: 90%;
  }

  .scroll-controls {
    right: 5px;
  }

  .scroll-btn {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  main {
    padding: 20px 10px;
  }

  .chat-container {
    height: 75vh;
  }

  .chat-header h1 {
    font-size: 1.2rem;
  }

  .chat-header h1 i {
    font-size: 1.5rem;
  }

  .user-info {
    padding: 5px 10px;
    font-size: 0.9rem;
  }

  #message-input {
    padding: 10px;
  }

  #send-btn {
    width: 40px;
    height: 40px;
  }

  .new-message-notification {
    font-size: 0.8rem;
    padding: 5px 10px;
  }
}