* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-dark: #0f0f1e;
  --bg-darker: #070710;
  --bg-light: #1a1a2e;
  --bg-card: #16213e;
  --accent: #00d4ff;
  --accent-hover: #00b8e6;
  --accent-dark: #0099cc;
  --text: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.65);
  --border: rgba(79, 195, 247, 0.15);
  --success: #00e676;
  --error: #ff1744;
  --warning: #ffc107;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-strong: rgba(0, 0, 0, 0.5);
}

html {
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Screens */
.screen {
  display: none;
  width: 100%;
  height: 100vh;
}

.screen.active {
  display: flex;
}

/* Auth Screen */
.auth-container {
  max-width: 450px;
  width: 90%;
  margin: auto;
  padding: 25px 35px;
  background: var(--bg-card);
  border-radius: 20px;
  box-shadow: 0 20px 60px var(--shadow-strong), 0 0 0 1px var(--border);
  backdrop-filter: blur(10px);
}

.auth-container h1 {
  text-align: center;
  margin-bottom: 25px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2.2em;
  font-weight: 700;
  letter-spacing: -1px;
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.auth-form h2 {
  margin-bottom: 18px;
  text-align: center;
  font-size: 1.4em;
  font-weight: 600;
}

.auth-form input {
  width: 100%;
  padding: 11px 15px;
  margin-bottom: 12px;
  background: var(--bg-darker);
  border: 2px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  transition: all 0.3s ease;
}

.auth-form input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-dark);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

.auth-form button {
  width: 100%;
  padding: 11px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.auth-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.auth-form button:active {
  transform: translateY(0);
}

.switch-auth {
  text-align: center;
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.switch-auth a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.switch-auth a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.message {
  margin-top: 10px;
  padding: 10px 15px;
  border-radius: 12px;
  text-align: center;
  font-size: 13px;
  display: none;
  animation: slideIn 0.3s ease;
}

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

@keyframes slideOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

.message.success {
  background: rgba(0, 230, 118, 0.15);
  border: 2px solid var(--success);
  color: var(--success);
  display: block;
}

.message.error {
  background: rgba(255, 23, 68, 0.15);
  border: 2px solid var(--error);
  color: var(--error);
  display: block;
}

/* Chat Screen */
.chat-container {
  display: flex;
  height: 100vh;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 320px;
  min-width: 320px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  box-shadow: 2px 0 10px var(--shadow);
}

.sidebar-header {
  padding: 18px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-darker);
}

.sidebar-header h2 {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  font-size: 1.4em;
  font-weight: 700;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.role-badge {
  padding: 4px 10px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg-darker);
}

.tab-btn {
  flex: 1;
  padding: 11px 8px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
  font-size: 12px;
  font-weight: 600;
  position: relative;
}

.tab-btn:hover {
  color: var(--text);
  background: rgba(0, 212, 255, 0.05);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
}

/* Tab Badge */
.tab-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: linear-gradient(135deg, #ff1744, #ff4569);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(255, 23, 68, 0.4);
  animation: pulse 2s infinite;
}

.tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

.tab-content.active {
  display: flex;
  flex-direction: column;
}

.tab-actions {
  padding: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  background: var(--bg-dark);
}

.tab-actions button {
  flex: 1;
  min-width: 110px;
  padding: 9px 14px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 3px 10px rgba(0, 212, 255, 0.25);
}

.tab-actions button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 212, 255, 0.35);
}

.tab-actions button:active {
  transform: translateY(0);
}

.list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

.list-item {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.list-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.list-item:hover {
  background: rgba(0, 212, 255, 0.08);
  padding-left: 24px;
}

.list-item:hover::before {
  transform: scaleY(1);
}

.list-item.active {
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 212, 255, 0.05) 100%);
  border-left: 3px solid var(--accent);
  padding-left: 17px;
}

/* Unread Badge */
.unread-badge {
  background: linear-gradient(135deg, #ff1744, #ff4569);
  color: white;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 12px;
  min-width: 20px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(255, 23, 68, 0.4);
  animation: pulse 2s infinite;
}

.list-item.has-unread {
  background: rgba(255, 23, 68, 0.05);
  border-left: 3px solid #ff1744;
  padding-left: 17px;
  font-weight: 600;
}

.list-item.has-unread:hover {
  background: rgba(255, 23, 68, 0.1);
}

/* Online/Offline Badge */
.online-badge {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-left: 8px;
  box-shadow: 0 0 8px currentColor;
  animation: pulse-glow 2s infinite;
}

.online-badge.online {
  background: #4caf50;
  color: #4caf50;
}

.online-badge.offline {
  background: #9e9e9e;
  color: #9e9e9e;
  box-shadow: none;
  animation: none;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.sidebar-footer {
  padding: 15px;
  border-top: 1px solid var(--border);
  background: var(--bg-darker);
}

.sidebar-footer button {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, var(--error) 0%, #d50000 100%);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 3px 10px rgba(255, 23, 68, 0.3);
}

.sidebar-footer button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(255, 23, 68, 0.4);
}

.sidebar-footer button:active {
  transform: translateY(0);
}

/* Chat Area */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-dark);
  overflow: hidden;
}

.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 40px;
  background: radial-gradient(circle at center, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
  position: relative;
}

.welcome-screen::before {
  content: '💬';
  position: absolute;
  font-size: 120px;
  opacity: 0.1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(-50%, -50%) translateY(0px); }
  50% { transform: translate(-50%, -50%) translateY(-20px); }
}

.welcome-screen h1 {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  font-size: 2.5em;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.welcome-screen p {
  color: var(--text-muted);
  font-size: 1.15em;
  max-width: 500px;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.chat-window {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.chat-header {
  padding: 15px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 10px var(--shadow);
  z-index: 10;
}

.chat-header h3 {
  flex: 1;
  font-size: 1.15em;
  font-weight: 600;
}

.chat-header button {
  width: 38px;
  height: 38px;
  background: rgba(255, 23, 68, 0.1);
  border: 2px solid rgba(255, 23, 68, 0.3);
  border-radius: 10px;
  color: var(--error);
  font-size: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.chat-header button:hover {
  background: var(--error);
  border-color: var(--error);
  color: #fff;
  transform: rotate(90deg);
}

.typing-indicator {
  color: var(--accent);
  font-size: 13px;
  font-style: italic;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

@keyframes popupFade {
  from { 
    opacity: 0; 
    transform: translate(-50%, -50%) scale(0.9); 
  }
  to { 
    opacity: 1; 
    transform: translate(-50%, -50%) scale(1); 
  }
}

.messages-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-darker);
}

.message-item {
  max-width: 65%;
  padding: 11px 15px;
  border-radius: 16px;
  word-wrap: break-word;
  box-shadow: 0 2px 8px var(--shadow);
  animation: messageSlide 0.3s ease;
  position: relative;
}

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

.message-item.sent {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.message-item.received {
  align-self: flex-start;
  background: var(--bg-card);
  color: var(--text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--border);
}

.message-sender {
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--accent);
  opacity: 0.9;
}

.message-text {
  margin-bottom: 6px;
  line-height: 1.5;
  font-size: 15px;
}

.message-image {
  max-width: 100%;
  max-height: 300px;
  border-radius: 12px;
  margin-top: 8px;
  cursor: pointer;
  transition: transform 0.3s ease;
  display: block;
}

.message-image:hover {
  transform: scale(1.02);
}

.message-time {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  text-align: right;
  margin-top: 4px;
}

.message-item.received .message-time {
  color: var(--text-muted);
}

.chat-input {
  padding: 15px 20px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  align-items: center;
  box-shadow: 0 -2px 10px var(--shadow);
}

.chat-input input[type="text"] {
  flex: 1;
  padding: 11px 15px;
  background: var(--bg-darker);
  border: 2px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  transition: all 0.3s ease;
}

.chat-input input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-dark);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.chat-input input[type="text"]::placeholder {
  color: var(--text-muted);
}

.chat-input button {
  padding: 11px 20px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 3px 12px rgba(0, 212, 255, 0.3);
  font-size: 14px;
}

.chat-input button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 16px rgba(0, 212, 255, 0.4);
}

.chat-input button:active {
  transform: translateY(0);
}

.chat-input button:first-child {
  padding: 14px 18px;
  font-size: 18px;
}

.image-preview {
  padding: 16px 25px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 15px;
}

.image-preview img {
  max-width: 120px;
  max-height: 120px;
  border-radius: 12px;
  border: 2px solid var(--border);
  box-shadow: 0 2px 8px var(--shadow);
}

.image-preview button {
  width: 36px;
  height: 36px;
  background: var(--error);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(255, 23, 68, 0.3);
}

.image-preview button:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(255, 23, 68, 0.5);
}

.image-preview button:active {
  transform: scale(0.95);
}

/* Admin Panels */
.admin-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-dark);
  overflow: hidden;
}

.panel-header {
  padding: 18px 24px;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-darker) 100%);
  border-bottom: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 20px var(--shadow);
}

.panel-header h2 {
  font-size: 1.5em;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.panel-header button {
  width: 40px;
  height: 40px;
  background: rgba(255, 23, 68, 0.15);
  border: 2px solid rgba(255, 23, 68, 0.4);
  border-radius: 10px;
  color: var(--error);
  font-size: 22px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-header button:hover {
  background: var(--error);
  border-color: var(--error);
  color: #fff;
  transform: rotate(90deg) scale(1.1);
}

.admin-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px;
  background: var(--bg-darker);
}

.admin-sections {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  padding: 0;
  margin-bottom: 20px;
}

.admin-sections button {
  padding: 18px 14px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 153, 204, 0.15) 100%);
  border: 2px solid rgba(0, 212, 255, 0.3);
  border-radius: 12px;
  color: var(--accent);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  position: relative;
  overflow: hidden;
}

.admin-sections button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  transition: left 0.3s ease;
  z-index: -1;
}

.admin-sections button:hover::before {
  left: 0;
}

.admin-sections button:hover {
  color: #fff;
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.5);
  border-color: var(--accent);
}

.admin-sections button:active {
  transform: translateY(-2px);
}

.admin-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.admin-user-item,
.admin-ip-item,
.admin-log-item {
  padding: 16px 18px;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-light) 100%);
  border-radius: 10px;
  border-left: 4px solid var(--accent);
  box-shadow: 0 2px 10px var(--shadow);
  transition: all 0.3s ease;
}

.admin-user-item:hover,
.admin-ip-item:hover,
.admin-log-item:hover {
  transform: translateX(6px);
  border-left-color: var(--accent-hover);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.admin-user-item h4 {
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 1.15em;
  font-weight: 700;
}

.admin-user-item p,
.admin-ip-item p,
.admin-log-item p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 5px;
  line-height: 1.5;
}

.admin-user-item p strong,
.admin-ip-item p strong,
.admin-log-item p strong {
  color: var(--text);
  font-weight: 600;
}

.admin-actions {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.admin-actions button {
  padding: 8px 14px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px var(--shadow);
}

.admin-actions button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
}

.admin-actions button:active {
  transform: translateY(0);
}

.btn-ban {
  background: linear-gradient(135deg, var(--error) 0%, #d50000 100%);
  color: #fff;
}

.btn-unban {
  background: linear-gradient(135deg, var(--success) 0%, #00c853 100%);
  color: #fff;
}

.btn-role {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
}

/* Log Filters */
.log-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  padding: 16px;
  background: var(--bg-card);
  border-radius: 10px;
  border: 1px solid var(--border);
}

.log-filters select,
.log-filters input {
  padding: 10px 14px;
  background: var(--bg-darker);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  transition: all 0.3s ease;
}

.log-filters select:focus,
.log-filters input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.log-filters select {
  flex: 0 0 auto;
  min-width: 180px;
}

.log-filters input {
  flex: 1;
  min-width: 200px;
}

/* Logs Container */
.logs-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.log-entry {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-card);
  border-radius: 8px;
  border-left: 4px solid var(--accent);
  transition: all 0.3s ease;
}

.log-entry:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.log-badge {
  flex-shrink: 0;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 6px var(--shadow);
}

.log-badge.AUTH { background: linear-gradient(135deg, #2196F3, #1976D2); color: #fff; }
.log-badge.MESSAGE { background: linear-gradient(135deg, #4CAF50, #388E3C); color: #fff; }
.log-badge.FRIEND { background: linear-gradient(135deg, #9C27B0, #7B1FA2); color: #fff; }
.log-badge.GROUP { background: linear-gradient(135deg, #FF9800, #F57C00); color: #fff; }
.log-badge.SUPPORT { background: linear-gradient(135deg, #00BCD4, #0097A7); color: #fff; }
.log-badge.ADMIN { background: linear-gradient(135deg, #F44336, #D32F2F); color: #fff; }
.log-badge.SECURITY { background: linear-gradient(135deg, #FF5722, #E64A19); color: #fff; }
.log-badge.ERROR { background: linear-gradient(135deg, #D32F2F, #B71C1C); color: #fff; }
.log-badge.SYSTEM { background: linear-gradient(135deg, #607D8B, #455A64); color: #fff; }
.log-badge.SOCKET { background: linear-gradient(135deg, #673AB7, #512DA8); color: #fff; }
.log-badge.API { background: linear-gradient(135deg, #009688, #00796B); color: #fff; }

/* Log Levels */
.log-badge.critical { 
  animation: pulse 1s infinite;
  box-shadow: 0 0 10px rgba(211, 47, 47, 0.6);
}
.log-badge.error { 
  border: 2px solid var(--error);
}
.log-badge.warning { 
  border: 2px solid var(--warning);
}
.log-badge.info { 
  opacity: 0.9;
}
.log-badge.debug { 
  opacity: 0.7;
}

.log-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log-action {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

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

.log-meta {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.log-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Debug Section */
.debug-section {
  margin-bottom: 30px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.debug-section h3 {
  margin-bottom: 16px;
  font-size: 1.2em;
  color: var(--accent);
  font-weight: 700;
  border-bottom: 2px solid var(--border);
  padding-bottom: 10px;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.status-card {
  padding: 16px;
  background: linear-gradient(135deg, var(--bg-light), var(--bg-darker));
  border-radius: 10px;
  border-left: 4px solid var(--accent);
  transition: all 0.3s ease;
}

.status-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.3);
}

.status-card h4 {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-card .value {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

#db-selector {
  width: 100%;
  padding: 12px;
  background: var(--bg-darker);
  border: 2px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  margin-bottom: 16px;
  transition: all 0.3s ease;
}

#db-selector:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.db-viewer {
  max-height: 500px;
  overflow: auto;
  background: var(--bg-darker);
  border-radius: 8px;
  padding: 16px;
}

.db-table {
  width: 100%;
  border-collapse: collapse;
}

.db-table th,
.db-table td {
  padding: 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}

.db-table th {
  background: var(--bg-card);
  color: var(--accent);
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 10;
}

.db-table tr:hover {
  background: rgba(0, 212, 255, 0.05);
}

.db-json {
  background: var(--bg-card);
  padding: 14px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 11px;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 400px;
  overflow: auto;
}

.test-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.test-actions button {
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(0, 153, 204, 0.15));
  border: 2px solid rgba(0, 212, 255, 0.3);
  border-radius: 8px;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 13px;
}

.test-actions button:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.test-output {
  padding: 14px;
  background: var(--bg-darker);
  border-radius: 8px;
  border: 1px solid var(--border);
  font-family: 'Courier New', monospace;
  font-size: 12px;
  min-height: 100px;
  max-height: 300px;
  overflow: auto;
}

.test-output .success {
  color: var(--success);
}

.test-output .error {
  color: var(--error);
}

.test-output .info {
  color: var(--accent);
}

/* Log Details Status Colors */
.log-details .success {
  background: linear-gradient(135deg, var(--success), #00c853);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
}

.log-details .warning {
  background: linear-gradient(135deg, var(--warning), #ff9800);
  color: #000;
  padding: 2px 6px;
  border-radius: 4px;
}

.log-details .error {
  background: linear-gradient(135deg, var(--error), #d32f2f);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
}

.log-details .info {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
}

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 999;
  animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
  display: block;
}

.modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-card);
  padding: 35px;
  border-radius: 16px;
  max-width: 550px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: 0 20px 60px var(--shadow-strong), 0 0 0 1px var(--border);
  animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
  from { opacity: 0; transform: translate(-50%, -48%); }
  to { opacity: 1; transform: translate(-50%, -50%); }
}

.modal.active {
  display: block;
}

.modal h3 {
  margin-bottom: 25px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.6em;
  font-weight: 700;
}

.modal h4 {
  margin-top: 20px;
  margin-bottom: 12px;
  color: var(--text);
  font-weight: 600;
  font-size: 1.1em;
}

.modal input,
.modal textarea {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 16px;
  background: var(--bg-darker);
  border: 2px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.3s ease;
}

.modal input:focus,
.modal textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-dark);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.modal input::placeholder,
.modal textarea::placeholder {
  color: var(--text-muted);
}

.modal textarea {
  resize: vertical;
  min-height: 100px;
}

.modal button {
  padding: 12px 24px;
  margin-right: 10px;
  margin-top: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 3px 12px rgba(0, 212, 255, 0.3);
  font-size: 14px;
}

.modal button:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 16px rgba(0, 212, 255, 0.4);
}

.modal button:active {
  transform: translateY(0);
}

.modal button:last-child {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.modal button:last-child:hover {
  background: rgba(255, 255, 255, 0.15);
}

.search-results,
.requests-list,
#group-members-list {
  max-height: 350px;
  overflow-y: auto;
  margin-bottom: 16px;
  padding-right: 5px;
}

.search-result-item,
.request-item {
  padding: 14px 16px;
  background: var(--bg-darker);
  border-radius: 10px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  gap: 10px;
}

.search-result-item:hover,
.request-item:hover {
  background: var(--bg-dark);
  border-color: var(--accent);
  transform: translateX(3px);
}

.search-result-item button,
.request-item button {
  padding: 8px 16px;
  font-size: 13px;
  white-space: nowrap;
  margin: 0;
}

.request-item > div {
  display: flex;
  gap: 8px;
}

.btn-accept {
  background: linear-gradient(135deg, var(--success) 0%, #00c853 100%) !important;
}

.btn-reject {
  background: linear-gradient(135deg, var(--error) 0%, #d50000 100%) !important;
}

.friend-checkbox {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-darker);
  border-radius: 10px;
  margin-bottom: 10px;
  cursor: pointer;
  border: 2px solid var(--border);
  transition: all 0.3s ease;
  user-select: none;
}

.friend-checkbox:hover {
  background: var(--bg-dark);
  border-color: var(--accent);
}

.friend-checkbox input {
  margin-right: 12px;
  width: 20px;
  height: 20px;
  margin-bottom: 0;
  cursor: pointer;
  accent-color: var(--accent);
}

.ticket-item {
  padding: 18px;
  background: var(--bg-card);
  border-radius: 12px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

.ticket-item:hover {
  transform: translateX(4px);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.15);
}

.ticket-item > div:first-child {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.ticket-item strong {
  font-size: 1.05em;
  color: var(--text);
}

.ticket-status {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ticket-status.open {
  background: linear-gradient(135deg, var(--success) 0%, #00c853 100%);
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 230, 118, 0.3);
}

.ticket-status.closed {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.ticket-reply {
  padding: 14px;
  background: var(--bg-darker);
  border-radius: 10px;
  margin-bottom: 12px;
  border-left: 3px solid var(--accent);
}

.ticket-reply-author {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-darker);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-radius: 5px;
  border: 2px solid var(--bg-darker);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
}

/* ============================================ */
/* RESPONSIVE DESIGN */
/* ============================================ */

/* Desktop Large (1920px+) */
@media (min-width: 1920px) {
  .chat-container {
    max-width: 2400px;
    margin: 0 auto;
  }
  
  .sidebar {
    width: 360px;
    min-width: 360px;
  }
  
  .auth-container {
    max-width: 500px;
  }
  
  .message-item {
    max-width: 60%;
  }
}

/* Desktop (1024px - 1919px) - Standard */
@media (min-width: 1024px) and (max-width: 1919px) {
  .sidebar {
    width: 320px;
    min-width: 320px;
  }
  
  .message-item {
    max-width: 65%;
  }
}

/* Tablet Landscape & Small Desktop (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  html {
    font-size: 15px;
  }
  
  .sidebar {
    width: 280px;
    min-width: 280px;
  }
  
  .sidebar-header h2 {
    font-size: 1.4em;
  }
  
  .tab-btn {
    font-size: 12px;
    padding: 12px 6px;
  }
  
  .chat-header {
    padding: 16px 20px;
  }
  
  .chat-header h3 {
    font-size: 1.2em;
  }
  
  .messages-container {
    padding: 20px;
  }
  
  .message-item {
    max-width: 70%;
    padding: 12px 16px;
  }
  
  .chat-input {
    padding: 16px 20px;
  }
  
  .auth-container {
    max-width: 420px;
    padding: 40px 30px;
  }
  
  .auth-container h1 {
    font-size: 2.3em;
  }
  
  .modal {
    max-width: 500px;
    padding: 30px;
  }
  
  .admin-sections {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet Portrait (481px - 767px) */
@media (min-width: 481px) and (max-width: 767px) {
  html {
    font-size: 14px;
  }
  
  .chat-container {
    position: relative;
  }
  
  .sidebar {
    width: 100%;
    min-width: unset;
    max-width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px var(--shadow-strong);
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .chat-area {
    width: 100%;
  }
  
  .chat-header {
    padding: 14px 16px;
  }
  
  .chat-header h3 {
    font-size: 1.1em;
  }
  
  .messages-container {
    padding: 16px;
  }
  
  .message-item {
    max-width: 80%;
    padding: 12px 14px;
    font-size: 14px;
  }
  
  .chat-input {
    padding: 14px 16px;
    gap: 10px;
  }
  
  .chat-input input[type="text"] {
    padding: 12px 14px;
    font-size: 14px;
  }
  
  .chat-input button {
    padding: 12px 18px;
    font-size: 14px;
  }
  
  .auth-container {
    max-width: 90%;
    padding: 35px 25px;
  }
  
  .auth-container h1 {
    font-size: 2em;
  }
  
  .auth-form h2 {
    font-size: 1.3em;
  }
  
  .auth-form input {
    padding: 12px 16px;
    font-size: 14px;
  }
  
  .welcome-screen {
    padding: 40px 20px;
  }
  
  .welcome-screen::before {
    font-size: 100px;
  }
  
  .welcome-screen h1 {
    font-size: 2em;
  }
  
  .welcome-screen p {
    font-size: 1em;
  }
  
  .modal {
    max-width: 85%;
    padding: 25px;
  }
  
  .modal h3 {
    font-size: 1.4em;
  }
  
  .admin-sections {
    grid-template-columns: 1fr;
    padding: 16px;
  }
  
  .tab-actions {
    flex-direction: column;
  }
  
  .tab-actions button {
    width: 100%;
  }
  
  /* Mobile Menu Toggle */
  .chat-header::before {
    content: '☰';
    font-size: 24px;
    cursor: pointer;
    margin-right: 12px;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.3s ease;
  }
  
  .chat-header::before:hover {
    background: rgba(0, 212, 255, 0.1);
  }
}

/* Mobile (up to 480px) */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  body {
    overflow-x: hidden;
  }
  
  .chat-container {
    position: relative;
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    min-width: unset;
    max-width: 100%;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px var(--shadow-strong);
  }
  
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .sidebar-header {
    padding: 20px 16px;
  }
  
  .sidebar-header h2 {
    font-size: 1.3em;
  }
  
  .user-info {
    font-size: 13px;
  }
  
  .tab-btn {
    font-size: 11px;
    padding: 12px 4px;
  }
  
  .tab-actions {
    padding: 12px;
    flex-direction: column;
  }
  
  .tab-actions button {
    width: 100%;
    min-width: unset;
    padding: 12px;
  }
  
  .list-item {
    padding: 14px 16px;
    font-size: 14px;
  }
  
  .chat-area {
    width: 100%;
    height: 100vh;
  }
  
  .chat-header {
    padding: 12px 14px;
  }
  
  .chat-header h3 {
    font-size: 1em;
  }
  
  .chat-header button {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }
  
  .messages-container {
    padding: 14px;
    gap: 10px;
  }
  
  .message-item {
    max-width: 85%;
    padding: 10px 14px;
    font-size: 14px;
  }
  
  .message-text {
    font-size: 14px;
  }
  
  .message-image {
    max-height: 200px;
  }
  
  .chat-input {
    padding: 12px;
    gap: 8px;
    flex-wrap: wrap;
  }
  
  .chat-input input[type="text"] {
    flex: 1 1 100%;
    padding: 12px 14px;
    font-size: 14px;
    order: 2;
  }
  
  .chat-input button {
    padding: 12px 16px;
    font-size: 14px;
  }
  
  .chat-input button:first-child {
    order: 1;
  }
  
  .chat-input button:last-child {
    order: 3;
    flex: 1;
  }
  
  .image-preview {
    padding: 12px;
  }
  
  .image-preview img {
    max-width: 80px;
    max-height: 80px;
  }
  
  .auth-container {
    width: 95%;
    max-width: 95%;
    padding: 30px 20px;
    border-radius: 16px;
  }
  
  .auth-container h1 {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  
  .auth-form h2 {
    font-size: 1.2em;
    margin-bottom: 20px;
  }
  
  .auth-form input {
    padding: 12px 14px;
    font-size: 14px;
    margin-bottom: 14px;
  }
  
  .auth-form button {
    padding: 13px;
    font-size: 15px;
  }
  
  .switch-auth {
    font-size: 13px;
    margin-top: 16px;
  }
  
  .welcome-screen {
    padding: 30px 16px;
  }
  
  .welcome-screen::before {
    font-size: 80px;
  }
  
  .welcome-screen h1 {
    font-size: 1.6em;
    margin-bottom: 16px;
  }
  
  .welcome-screen p {
    font-size: 0.95em;
    padding: 0 10px;
  }
  
  .modal {
    width: 95%;
    max-width: 95%;
    padding: 25px 20px;
    max-height: 90vh;
  }
  
  .modal h3 {
    font-size: 1.3em;
    margin-bottom: 20px;
  }
  
  .modal h4 {
    font-size: 1em;
  }
  
  .modal input,
  .modal textarea {
    padding: 11px 14px;
    font-size: 14px;
  }
  
  .modal button {
    padding: 11px 18px;
    font-size: 13px;
    margin-right: 8px;
  }
  
  .search-results,
  .requests-list,
  #group-members-list {
    max-height: 250px;
  }
  
  .search-result-item,
  .request-item {
    padding: 12px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  
  .request-item > div {
    width: 100%;
    justify-content: flex-end;
  }
  
  .search-result-item button,
  .request-item button {
    padding: 8px 14px;
    font-size: 12px;
  }
  
  .admin-content {
    padding: 16px;
  }
  
  .admin-sections {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px;
  }
  
  .admin-sections button {
    padding: 14px;
    font-size: 13px;
  }
  
  .admin-user-item,
  .admin-ip-item,
  .admin-log-item {
    padding: 16px;
    margin-bottom: 12px;
  }
  
  .admin-user-item h4 {
    font-size: 1.1em;
  }
  
  .admin-user-item p,
  .admin-ip-item p,
  .admin-log-item p {
    font-size: 13px;
  }
  
  .admin-actions {
    flex-direction: column;
  }
  
  .admin-actions button {
    width: 100%;
    padding: 10px;
  }
  
  .panel-header {
    padding: 16px;
  }
  
  .panel-header h2 {
    font-size: 1.2em;
  }
  
  .ticket-item {
    padding: 14px;
  }
  
  .ticket-item strong {
    font-size: 1em;
  }
  
  /* Mobile Sidebar Overlay */
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 199;
  }
  
  .sidebar-overlay.active {
    display: block;
  }
}

/* Mobile Small (up to 360px) */
@media (max-width: 360px) {
  html {
    font-size: 13px;
  }
  
  .auth-container {
    padding: 25px 16px;
  }
  
  .auth-container h1 {
    font-size: 1.6em;
  }
  
  .modal {
    padding: 20px 16px;
  }
  
  .message-item {
    max-width: 90%;
  }
  
  .chat-input button {
    padding: 10px 12px;
  }
}

/* Mobile Portrait Mode */
@media (max-height: 700px) and (orientation: portrait) {
  .auth-container {
    padding: 20px 16px;
    max-height: 85vh;
    overflow-y: auto;
  }
  
  .auth-container h1 {
    font-size: 1.8em;
    margin-bottom: 20px;
  }
  
  .auth-form h2 {
    font-size: 1.1em;
    margin-bottom: 16px;
  }
  
  .auth-form input {
    padding: 10px 12px;
    margin-bottom: 10px;
  }
  
  .auth-form button {
    padding: 11px;
  }
  
  .sidebar-header {
    padding: 14px;
  }
  
  .tab-btn {
    padding: 10px 4px;
    font-size: 10px;
  }
  
  .messages-container {
    padding: 10px;
  }
  
  .chat-input {
    padding: 10px;
  }
  
  .welcome-screen {
    padding: 20px 16px;
  }
  
  .welcome-screen::before {
    font-size: 60px;
  }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
  .auth-container {
    max-height: 90vh;
    overflow-y: auto;
    padding: 15px 20px;
  }
  
  .auth-container h1 {
    font-size: 1.5em;
    margin-bottom: 15px;
  }
  
  .chat-header {
    padding: 10px 16px;
  }
  
  .messages-container {
    padding: 10px;
  }
  
  .sidebar-header {
    padding: 12px;
  }
  
  .welcome-screen::before {
    font-size: 50px;
  }
}