:root {
  color-scheme: light;
  --bg-color: #f5f6fa;
  --surface-color: #ffffff;
  --surface-alt: #f8f9fb;
  --text-color: #111827;
  --muted-color: #6c757d;
  --border-color: #dfe3ea;
  --bubble-incoming: #e5e5ea;
  --bubble-outgoing: #0d6efd;
  --bubble-outgoing-text: #ffffff;
  --input-bg: #ffffff;
  --shadow-soft: 0 6px 18px rgba(0, 0, 0, 0.06);
  --modal-overlay: rgba(0, 0, 0, 0.8);
}

body.dark-mode {
  color-scheme: dark;
  --bg-color: #0f1118;
  --surface-color: #181b22;
  --surface-alt: #10131b;
  --text-color: #e7e9f3;
  --muted-color: #a6aec1;
  --border-color: #2c3343;
  --bubble-incoming: #1f2737;
  --bubble-outgoing: #3b82f6;
  --bubble-outgoing-text: #f8fafc;
  --input-bg: #0f1118;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.35);
  --modal-overlay: rgba(3, 6, 12, 0.9);
}

body {
  padding-top: 1rem;
  background: var(--bg-color);
  color: var(--text-color);
}
#app-footer {
  color: var(--muted-color);
}
h6 { margin-top: 0.5rem; margin-left: 1rem; color: var(--text-color); }

.card {
  background: var(--surface-color);
  color: var(--text-color);
  border-color: var(--border-color);
  box-shadow: var(--shadow-soft);
}
.card-header {
  background: var(--surface-alt);
  border-color: var(--border-color);
}

#theme-toggle-wrapper {
  position: static;
}


#users-list {
  border: none;
  border-radius: 0 0 var(--bs-border-radius) var(--bs-border-radius);
  max-height: 300px;
  overflow-y: auto;
  background: var(--surface-color);
}
#users-list li { cursor: pointer; }
#users-list .list-group-item {
  border: none;
  border-radius: 0;
  border-top: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-color);
}



#chat-tabs { margin-top: 1rem; }
.messages-box {
  height: 350px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  background: var(--surface-alt);
  color: var(--text-color);
}
.form-control,
.form-select,
.form-check-input {
  background-color: var(--input-bg);
  color: var(--text-color);
  border-color: var(--border-color);
}
.form-control:focus,
.form-select:focus {
  background-color: var(--input-bg);
  color: var(--text-color);
}
.form-control::placeholder {
  color: var(--muted-color);
}
.nav-tabs {
  border-color: var(--border-color);
}
.nav-tabs .nav-link {
  color: var(--muted-color);
}
.nav-tabs .nav-link.active {
  color: var(--text-color);
  background: var(--surface-color);
  border-color: var(--border-color);
}
.message-me { font-weight: bold; }
.message-line { margin-bottom: 0.25rem; }
.unread-badge {
  margin-left: 0.5rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
}
.user-unread-badge {
  margin-left: 0.5rem;
}
.nav-link.unread {
  font-weight: bold;
}
.close-tab-btn {
  margin-left: 0.5rem;
  padding: 0;
  border: none;
  background: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--muted-color);
  line-height: 1;
  vertical-align: top;
  display: inline-flex;
  align-items: flex-start;
  justify-content: center;
  height: 1.2rem;
}
.close-tab-btn:hover {
  color: var(--text-color);
}
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.5rem;
  vertical-align: middle;
}
.status-dot.online {
  background-color: #28a745;
}
.status-dot.idle {
  background-color: #ffc107;
}
.status-dot.offline {
  background-color: #6c757d;
}
.user-emoji-offline {
  filter: grayscale(1);
  opacity: 0.6;
}
.block-btn, .delete-chat-btn, .btn-borderless {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
}
.user-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.user-main {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.last-seen {
  font-size: 0.7rem;
  line-height: 1;
  color: var(--muted-color);
}
.user-emoji.user-emoji-offline {
  opacity: 0.4;
  filter: grayscale(1);
  transition: opacity 0.2s ease;
}
.user-item.blocked {
  opacity: 0.5;
  text-decoration: line-through;
}

/* Square thumbnail in chat */
.image-container {
  width: 120px;      /* choose any size you like */
  height: 120px;
  position: relative;
}
.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;   /* crop to fill the square */
  border-radius: 0.5rem;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-touch-callout: none;
}
.image-loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
}
.image-loading-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: image-spinner 0.9s linear infinite;
}
@keyframes image-spinner {
  to {
    transform: rotate(360deg);
  }
}
.file-input-wrapper {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.file-input-wrapper input[type="file"] {
  display: none;
}
.file-input-wrapper label {
  margin: 0;
  cursor: pointer;
}
.image-preview {
  max-width: 100px;
  max-height: 100px;
  border-radius: 0.25rem;
  object-fit: cover;
}
/* Message Bubble Styles */
.message-line {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.message-line:not(.message-me) {
  justify-content: flex-start;
}
.message-line.message-me {
  justify-content: flex-end;
}
.message-bubble {
  max-width: 70%;
  padding: 0.75rem 1rem;
  border-radius: 1rem;
  word-wrap: break-word;
  word-break: break-word;
}
.message-line:not(.message-me) .message-bubble {
  background-color: var(--bubble-incoming);
  color: var(--text-color);
  border-bottom-left-radius: 0.25rem;
  order: 1;
}
.message-line.message-me .message-bubble {
  background-color: var(--bubble-outgoing);
  color: var(--bubble-outgoing-text);
  border-bottom-right-radius: 0.25rem;
  order: 2;
}
.message-sender {
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0.7;
  margin-top: 0.5rem;
  flex-shrink: 0;
}
.message-line:not(.message-me) .message-sender {
  order: 2;
}
.message-line.message-me .message-sender {
  order: 1;
  text-align: right;
}
.message-timestamp {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.7;
}
.file-input-wrapper label.btn-secondary {
  background-color: var(--surface-color) !important;
  color: var(--text-color) !important;
  border-color: var(--border-color);
  width: 40px;
  height: 40px;
  font-size: 125%;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.user-emoji {
  display: inline-block;
  width: 1.2rem;
  text-align: center;
  margin-right: 0.25rem;
}
.message-status-indicator {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
  font-size: 0.85rem;
  opacity: 0.85;
}
.message-line.message-me .message-status-indicator {
  color: var(--bubble-outgoing-text);
}
.message-bubble.pending .message-status-indicator {
  opacity: 1;
}
.message-bubble.pending {
  opacity: 0.8;
}
.typing-indicator {
  flex: 0 1 auto;
  padding: 0.25rem 0;
  font-size: 1rem;
  color: var(--muted-color);
  font-style: italic;
  visibility: hidden;
}
.typing-indicator.active {
  visibility: visible;
}
.typing-dots {
  display: inline-block;
  font-size: 1.5rem;
}
.typing-dots span {
  animation: blink 1.4s infinite;
  animation-fill-mode: both;
}
.typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}
.typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}
@keyframes blink {
  0%, 80%, 100% {
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
}


.buttons-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: nowrap;
}



.status-badge {
  font-size: 0.8rem;
  margin-left: 10px;
}
/* Image Modal Styles */
#imageModal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: var(--modal-overlay);
  overflow: auto;
}
.modal-content-image {
  margin: auto;
  display: block;
  width: 90vw;
  max-width: 800px;
  height: auto;
  max-height: 90vh;
  object-fit: contain;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.close-modal {
  position: fixed;
  top: 20px;
  right: 20px;
  color: #f1f1f1;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border-color);
  padding: 5px 15px;
  border-radius: 4px;
  z-index: 1001;
}
.close-modal:hover,
.close-modal:focus {
  color: #bbb;
  background: rgba(0, 0, 0, 0.8);
}
.modal-content-image {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-touch-callout: none;
}

@media (max-width: 768px) {
  .close-modal {
    top: 10px;
    right: 10px;
    font-size: 24px;
    padding: 3px 10px;
  }
  .modal-content-image {
    width: 95vw;
    max-height: 95vh;
  }
}


    /* Emoji picker button same style as camera/gallery */
.file-input-wrapper label.btn-secondary,
.file-input-wrapper .emoji-toggle.btn-secondary {
  background-color: var(--surface-color) !important;
  color: var(--text-color) !important;
  border-color: var(--border-color);
  width: 40px;
  height: 40px;
  font-size: 125%;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Emoji dropdown */
.emoji-dropdown-wrapper {
  position: relative;
}

.emoji-dropdown {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.3rem);
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.25rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  max-height: 200px;
  max-width: 100vw;
  overflow-y: auto;
  z-index: 20;

  /* hidden by default */
  display: none;

  /* let width shrink-wrap the grid */
  width: max-content;
  box-sizing: border-box;

  /* grid layout */
  grid-template-columns: repeat(6, auto);
  gap: 0.1rem;
  justify-items: center;
}

.emoji-dropdown.open {
  display: inline-grid;
}

.emoji-dropdown .emoji-option {
  background: none;
  border: none;
  font-size: 1.25rem;
  padding: 0.2rem;
  margin: 0.05rem;
  cursor: pointer;
  line-height: 1.4;
}

.emoji-dropdown .emoji-option:hover {
  transform: scale(1.1);
}