/* ===== Reset & Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #5865F2;
  --primary-hover: #4752C4;
  --bg-primary: #36393F;
  --bg-secondary: #2F3136;
  --bg-tertiary: #202225;
  --text-primary: #FFFFFF;
  --text-secondary: #B9BBBE;
  --text-muted: #72767D;
  --success: #43B581;
  --danger: #F04747;
  --border-color: #202225;
  --shadow: rgba(0, 0, 0, 0.2);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* ===== Login Page ===== */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
  width: 100%;
  max-width: 480px;
  padding: 20px;
}

.login-box {
  background: var(--bg-primary);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 8px 32px var(--shadow);
  text-align: center;
}

.logo {
  margin-bottom: 24px;
}

.login-box h1 {
  font-size: 28px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.subtitle {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 16px;
}

.discord-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 14px 24px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s ease, transform 0.2s ease;
}

.discord-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.discord-btn:active {
  transform: translateY(0);
}

.features {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 14px;
}

.feature-icon {
  font-size: 24px;
}

/* ===== Chat Page ===== */
.chat-page {
  height: 100vh;
  overflow: hidden;
}

.chat-container {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.online-count {
  background: var(--success);
  color: white;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.online-users {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.online-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 4px;
  cursor: pointer;
  transition: background 0.2s ease;
  position: relative;
}

.online-user:hover {
  background: var(--bg-tertiary);
}

.user-nickname {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.online-indicator {
  width: 10px;
  height: 10px;
  background: var(--success);
  border-radius: 50%;
  border: 2px solid var(--bg-secondary);
}

/* Main Chat */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

.chat-header {
  padding: 16px 24px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px var(--shadow);
}

.header-left h1 {
  font-size: 20px;
  font-weight: 600;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar-small {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.default-avatar {
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.username {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.clear-btn {
  padding: 8px 12px;
  background: #FFA500;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.clear-btn:hover {
  opacity: 0.8;
}

.logout-btn {
  padding: 8px 12px;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.logout-btn:hover {
  opacity: 0.8;
}

/* Messages */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  background: var(--bg-primary);
}

.messages {
  max-width: 1000px;
  margin: 0 auto;
}

.message {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.message-content {
  flex: 1;
}

.message-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}

.message-author {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.message-time {
  font-size: 12px;
  color: var(--text-muted);
}

.message-text {
  font-size: 15px;
  color: var(--text-primary);
  word-wrap: break-word;
  line-height: 1.5;
}

.own-message .message-content {
  background: rgba(88, 101, 242, 0.1);
  padding: 8px 12px;
  border-radius: 8px;
}

/* Message Form */
.message-form {
  padding: 20px 24px;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 12px;
  align-items: center;
}

.message-form input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s ease;
}

.message-form input:focus {
  border-color: var(--primary-color);
}

.message-form input::placeholder {
  color: var(--text-muted);
}

.send-btn {
  padding: 12px 24px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s ease;
}

.send-btn:hover {
  background: var(--primary-hover);
}

.send-btn:active {
  transform: scale(0.98);
}

/* Scrollbar */
.messages-container::-webkit-scrollbar,
.online-users::-webkit-scrollbar {
  width: 8px;
}

.messages-container::-webkit-scrollbar-track,
.online-users::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

.messages-container::-webkit-scrollbar-thumb,
.online-users::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border-radius: 4px;
}

.messages-container::-webkit-scrollbar-thumb:hover,
.online-users::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  
  .message-form input {
    font-size: 16px; /* Prevent zoom on iOS */
  }
  
  .send-btn span {
    display: none;
  }
  
  .send-btn {
    padding: 12px 16px;
  }
}