/* Gehtsoft Brand Color Palette */
:root {
  /* Primary Colors */
  --gehtsoft-black: #000000;
  --gehtsoft-white: #ffffff;
  --gehtsoft-slate: #363b44;

  /* Secondary Colors */
  --gehtsoft-deep-blue: #17479d;
  --gehtsoft-clear-blue: #5aa0d8;
  --gehtsoft-action-green: #8de37b;

  /* Gradient */
  --gehtsoft-gradient: linear-gradient(135deg, #8de37b 0%, #5aa0d8 50%, #17479d 100%);
  --gehtsoft-gradient-horizontal: linear-gradient(90deg, #8de37b 0%, #5aa0d8 50%, #17479d 100%);
  --gehtsoft-gradient-vertical: linear-gradient(180deg, #8de37b 0%, #5aa0d8 50%, #17479d 100%);

  /* Semantic Colors (for compatibility) */
  --md-sys-color-primary: #17479d;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #5aa0d8;
  --md-sys-color-on-primary-container: #000000;
  --md-sys-color-secondary: #363b44;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-surface: #f5f5f5;
  --md-sys-color-on-surface: #000000;
  --md-sys-color-surface-variant: #e0e0e0;
  --md-sys-color-on-surface-variant: #363b44;
  --md-sys-color-outline: #b0b0b0;
  --md-sys-color-error: #d32f2f;
  --md-sys-color-on-error: #ffffff;
}

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

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  overflow: hidden;
}

#app {
  height: 100vh;
  overflow: hidden;
}

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

.screen.active {
  display: block;
}

/* Auth Screen */
#auth-screen {
  background: var(--gehtsoft-gradient);
}

#auth-screen .card {
  border-radius: 16px;
  border: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
}

/* Buttons */
.btn-primary {
  background: var(--gehtsoft-gradient);
  border: none;
  border-radius: 20px;
  padding: 12px 24px;
  font-weight: 500;
  color: var(--gehtsoft-white);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(23, 71, 157, 0.2);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #7dd168 0%, #4891c9 50%, #1340a0 100%);
  box-shadow: 0 4px 12px rgba(23, 71, 157, 0.4);
  transform: translateY(-1px);
  color: var(--gehtsoft-white);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(23, 71, 157, 0.3);
}

.btn-outline-secondary {
  border-radius: 20px;
  padding: 8px 16px;
  border-color: var(--gehtsoft-slate);
  color: var(--gehtsoft-slate);
  transition: all 0.3s ease;
}

.btn-outline-secondary:hover {
  background-color: var(--gehtsoft-slate);
  border-color: var(--gehtsoft-slate);
  color: var(--gehtsoft-white);
}

/* Form Controls */
.form-control {
  border-radius: 12px;
  border: 1px solid var(--md-sys-color-outline);
  padding: 12px 16px;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--gehtsoft-clear-blue);
  box-shadow: 0 0 0 0.2rem rgba(90, 160, 216, 0.25);
  outline: none;
}

/* Messages */
#messages-container {
  background-color: #F5F5F5;
}

#messages {
  display: flex;
  flex-direction: column;
}

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

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

.message-bubble {
  display: inline-block;
  max-width: 70%;
  padding: 12px 16px;
  border-radius: 16px;
  word-wrap: break-word;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message.own .message-bubble {
  background: linear-gradient(135deg, rgba(90, 160, 216, 0.9) 0%, rgba(23, 71, 157, 0.95) 100%);
  color: var(--gehtsoft-white);
  margin-left: auto;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(23, 71, 157, 0.15);
}

.message.other .message-bubble {
  background-color: #FFFFFF;
  color: var(--gehtsoft-black);
  border-bottom-left-radius: 4px;
  border: 1px solid #e0e0e0;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.message-header {
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--gehtsoft-clear-blue);
}

.message.own .message-header {
  color: rgba(255, 255, 255, 0.9);
}

.message.other .message-header {
  color: var(--gehtsoft-slate);
}

.message-content {
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
}

/* Larger emojis in chat messages */
.message-content .big-emoji {
  font-size: 21px;
  line-height: 1;
  vertical-align: middle;
}

.message-time {
  font-size: 11px;
  margin-top: 4px;
  opacity: 0.7;
}

/* Typing Indicator */
#typing-indicator {
  min-height: 45px;
}

#typing-indicator small {
  font-style: italic;
}

/* Message Input */
#message-input {
  resize: none;
  border-radius: 12px;
  border: 2px solid #e0e0e0;
  transition: all 0.3s ease;
}

#message-input:focus {
  border-color: var(--gehtsoft-clear-blue);
  box-shadow: 0 0 0 0.2rem rgba(90, 160, 216, 0.15);
}

#char-count {
  font-weight: 500;
  color: var(--gehtsoft-slate);
}

#char-count.text-warning {
  color: var(--gehtsoft-action-green) !important;
}

#char-count.text-danger {
  color: var(--md-sys-color-error) !important;
}

/* Navbar */
.navbar {
  background: var(--gehtsoft-slate) !important;
  border-bottom: 3px solid var(--gehtsoft-clear-blue);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.navbar-brand {
  color: var(--gehtsoft-white) !important;
  font-weight: 700;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#current-username {
  color: var(--gehtsoft-white);
  font-weight: 500;
}

.navbar .btn-outline-secondary {
  border-color: var(--gehtsoft-white);
  color: var(--gehtsoft-white);
}

.navbar .btn-outline-secondary:hover {
  background-color: var(--gehtsoft-white);
  color: var(--gehtsoft-slate);
}

/* Alert */
.alert {
  border-radius: 12px;
  border: none;
}

.alert-danger {
  background-color: #FFEBED;
  color: var(--md-sys-color-error);
}

/* Scrollbar */
#messages-container::-webkit-scrollbar {
  width: 8px;
}

#messages-container::-webkit-scrollbar-track {
  background: #F5F5F5;
}

#messages-container::-webkit-scrollbar-thumb {
  background: var(--gehtsoft-clear-blue);
  border-radius: 4px;
  transition: background 0.3s ease;
}

#messages-container::-webkit-scrollbar-thumb:hover {
  background: var(--gehtsoft-deep-blue);
}

/* Responsive */
@media (max-width: 768px) {
  .message-bubble {
    max-width: 85%;
  }

  #message-input {
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

/* Loading State */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Material Icons */
.material-icons {
  user-select: none;
}

/* Emoji Picker */
.emoji-picker {
  position: absolute;
  bottom: 100%;
  left: 0;
  width: 33.33%;
  max-width: 400px;
  min-width: 280px;
  background: white;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: 12px;
  margin-bottom: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
}

.emoji-picker-header {
  padding: 8px 12px;
  border-bottom: 2px solid var(--gehtsoft-clear-blue);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(90deg, rgba(90, 160, 216, 0.1) 0%, rgba(23, 71, 157, 0.05) 100%);
  border-radius: 12px 12px 0 0;
  font-weight: 500;
  color: var(--gehtsoft-slate);
}

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(24px, auto));
  gap: 8px;
  padding: 12px;
  justify-items: center;
}

.emoji-item {
  font-size: 24px;
  padding: 0;
  margin: 0;
  text-align: center;
  cursor: pointer;
  border-radius: 0;
  transition: all 0.2s ease;
  user-select: none;
  background-color: transparent;
  border: none;
  outline: none;
  line-height: 1;
  display: inline-block;
}

.emoji-item:hover {
  background-color: transparent;
  transform: scale(1.3);
}

@media (max-width: 768px) {
  .emoji-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .emoji-item {
    font-size: 20px;
    padding: 6px;
  }
}

/* User List Sidebar */
#user-list-sidebar {
  min-width: 200px;
  max-width: 300px;
  width: auto;
  background-color: var(--gehtsoft-white);
  border-left: 2px solid var(--gehtsoft-clear-blue);
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
}

.user-list-container {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 56px);
}

.user-list-header {
  padding: 16px;
  background: linear-gradient(90deg, rgba(90, 160, 216, 0.1) 0%, rgba(23, 71, 157, 0.05) 100%);
  border-bottom: 2px solid var(--gehtsoft-clear-blue);
  font-weight: 600;
  font-size: 16px;
  color: var(--gehtsoft-slate);
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-list-header .material-icons {
  color: var(--gehtsoft-clear-blue);
  font-size: 24px;
}

.user-list-content {
  flex-grow: 1;
  overflow-y: auto;
  padding: 12px;
}

/* User status groups */
.user-status-group {
  margin-bottom: 16px;
}

.user-status-group-header {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gehtsoft-slate);
  margin-bottom: 8px;
  padding: 4px 8px;
  border-radius: 4px;
  background-color: rgba(54, 59, 68, 0.05);
}

.user-status-group-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Individual user item */
.user-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 8px;
  transition: background-color 0.2s ease;
  cursor: pointer;
}

.user-item:hover {
  background-color: rgba(90, 160, 216, 0.08);
}

/* Status indicator dot */
.user-status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.2);
}

.user-status-indicator.online {
  background-color: var(--gehtsoft-action-green);
  box-shadow: 0 0 6px rgba(141, 227, 123, 0.5);
}

.user-status-indicator.away {
  background-color: var(--gehtsoft-clear-blue);
  box-shadow: 0 0 6px rgba(90, 160, 216, 0.5);
}

.user-status-indicator.offline {
  background-color: var(--gehtsoft-slate);
  opacity: 0.5;
}

/* Username text */
.user-username {
  font-size: 14px;
  color: var(--gehtsoft-slate);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Scrollbar for user list */
.user-list-content::-webkit-scrollbar {
  width: 6px;
}

.user-list-content::-webkit-scrollbar-track {
  background: #F5F5F5;
}

.user-list-content::-webkit-scrollbar-thumb {
  background: var(--gehtsoft-clear-blue);
  border-radius: 3px;
}

.user-list-content::-webkit-scrollbar-thumb:hover {
  background: var(--gehtsoft-deep-blue);
}

/* Responsive: hide user list on small screens */
@media (max-width: 768px) {
  #user-list-sidebar {
    display: none;
  }
}