/*
 * Title: Ping design system
 * Description: Dark, WhatsApp-style theme for the Ping chat application.
 * Author: Tanvir Hossain
 */

/* Design tokens  */
:root {
  --bg-app: #0a1014;
  --bg-sidebar: #111b21;
  --bg-header: #202c33;
  --bg-chat: #0b141a;
  --bg-input: #2a3942;
  --bg-hover: #202c33;
  --bg-active: #2a3942;

  --bubble-in: #202c33;
  --bubble-out: #1f5c34;

  --accent: #4caf50;
  --accent-hover: #43a047;
  --accent-ink: #06210d;
  --accent-soft: rgba(76, 175, 80, 0.16);

  --text: #e9edef;
  --text-muted: #8696a0;
  --text-faint: #667781;
  --divider: rgba(134, 150, 160, 0.15);
  --danger: #f15c5c;

  --radius: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;
}

/*  Reset & base  */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
html {
  font-size: 10px; /* keep 10px base: existing rem values depend on it */
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-app);
}
body {
  min-height: 100vh;
  background: var(--bg-app);
  color: var(--text);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.center { text-align: center; }
.hide { display: none !important; }
.show { display: block !important; }

/*  Shared form controls  */
input, select, textarea {
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--bg-input);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 12px 16px;
  outline: none;
}
input::placeholder { color: var(--text-muted); }
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
input.error { border-color: var(--danger); }

input[type="submit"], .btn {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius);
  padding: 12px 20px;
  transition: background 0.15s, transform 0.1s;
}
input[type="submit"]:hover, .btn:hover { background: var(--accent-hover); }
input[type="submit"]:active, .btn:active { transform: scale(0.98); }

p.error { color: var(--danger); font-size: 1.2rem; display: none; }
p.error.show { display: block; }

.icon-btn {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 21px;
  cursor: pointer;
  border: none; background: transparent; text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.icon-btn:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }

/*  Brand / logo  */
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand .logo { width: 32px; height: 32px; flex-shrink: 0; }
.brand .wordmark {
  font-size: 19px; font-weight: 700; letter-spacing: -0.3px; color: var(--text);
}
.brand .wordmark .dot { color: var(--accent); }

/*  Top app bar (users / profile)  */
.topbar {
  height: 60px;
  background: var(--bg-header);
  display: flex; align-items: center; gap: 8px;
  padding: 0 20px;
  border-bottom: 1px solid var(--divider);
}
.topnav { display: flex; gap: 4px; flex: 1; margin-left: 14px; }
.topnav a {
  color: var(--text-muted); text-decoration: none;
  font-size: 14.5px; font-weight: 500;
  padding: 8px 14px; border-radius: var(--radius);
}
.topnav a:hover { background: rgba(255, 255, 255, 0.05); color: var(--text); }
.topnav a.active { color: var(--accent); background: var(--accent-soft); }

/*  Login  */
#login-container {
  min-height: 100vh;
  width: 100%;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(76, 175, 80, 0.08), transparent 55%),
    var(--bg-chat);
}
#branding {
  width: 380px; max-width: 100%;
  background: var(--bg-sidebar);
  border: 1px solid var(--divider);
  border-radius: 18px;
  padding: 36px 32px 12px;
  text-align: center;
}
#branding svg { margin: 0 auto 10px; display: block; }
#branding h1 { color: var(--text); font-size: 24px; font-weight: 700; }
#login-form {
  width: 380px; max-width: 100%;
  background: var(--bg-sidebar);
  border: 1px solid var(--divider);
  border-top: none;
  border-radius: 0 0 18px 18px;
  padding: 8px 32px 34px;
}
#login-container { flex-direction: column; gap: 0; }
#branding { padding-bottom: 20px; }
#login-form form { display: flex; flex-direction: column; gap: 12px; }
#login-form input[type="text"], #login-form input[type="password"] { width: 100%; }
#login-form input[type="submit"] { width: 100%; margin-top: 8px; padding: 13px; }

/*  Inbox / chat  */
#chat-container {
  position: relative;
  display: grid;
  grid-template-columns: 380px 1fr;
  grid-template-rows: 64px 60px 1fr auto;
  grid-template-areas:
    "sidebar-head chat-title"
    "search       chat-main"
    "conv-list    chat-main"
    "conv-list    chat-form";
  height: 100vh;
  width: 100%;
  background: var(--bg-chat);
  overflow: hidden;
}

/* sidebar header */
#sidebar-head {
  grid-area: sidebar-head;
  background: var(--bg-header);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 12px 0 16px;
}
#sidebar-head .head-actions { display: flex; align-items: center; gap: 2px; }

/* sidebar search */
#search-container {
  grid-area: search;
  background: var(--bg-sidebar);
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
}
#search-container .search-icon { color: var(--text-muted); font-size: 18px; }
#search-container input {
  flex: 1;
  background: var(--bg-input);
  border-radius: var(--radius-pill);
  height: 40px;
  padding: 0 16px;
  font-size: 14px;
  border: none;
}

/* conversation list */
#conversation-list {
  grid-area: conv-list;
  background: var(--bg-sidebar);
  overflow-y: auto;
}
.conversation {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 14px;
  align-items: center;
  padding: 10px 16px;
  cursor: pointer;
  position: relative;
  border-bottom: 1px solid var(--divider);
  transition: background 0.12s;
}
.conversation:hover { background: var(--bg-hover); }
.conversation.active { background: var(--bg-active); }
.conversation > img {
  grid-row: span 2;
  width: 50px; height: 50px;
  border-radius: 50%;
  object-fit: cover;
}
.title-text {
  grid-row: 1; grid-column: 2;
  font-size: 16px; font-weight: 500; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.created-date {
  grid-row: 1; grid-column: 3; justify-self: end;
  font-size: 12px; color: var(--text-muted);
}
.conversation.online .created-date,
.conversation.unread .created-date { color: var(--accent); }
.conversation-message {
  grid-row: 2; grid-column: 2 / 4;
  font-size: 13.5px; color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  padding-right: 26px;
}
.online-dot {
  display: none;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent); margin-left: 7px; vertical-align: middle;
}
.conversation.online .online-dot { display: inline-block; }
.unread-badge {
  grid-row: 2; grid-column: 3; justify-self: end;
  background: var(--accent); color: var(--accent-ink);
  font-size: 12px; font-weight: 700;
  min-width: 20px; height: 20px; padding: 0 6px;
  border-radius: var(--radius-pill);
  display: flex; align-items: center; justify-content: center;
}
.no-conversation { padding: 18px 16px; color: var(--text-muted); font-size: 14px; }

/* floating new-chat button */
.new-message-container {
  position: absolute;
  left: 304px; bottom: 22px;
  z-index: 5;
}
.new-message-container a {
  display: flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  background: var(--accent);
  border-radius: 50%;
  color: var(--accent-ink);
  text-decoration: none;
  font-size: 30px; font-weight: 300; line-height: 1;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  transition: background 0.15s, transform 0.1s;
}
.new-message-container a:hover { background: var(--accent-hover); }
.new-message-container a:active { transform: scale(0.95); }

/* chat header */
#chat-title {
  grid-area: chat-title;
  background: var(--bg-header);
  border-left: 1px solid var(--divider);
  display: flex; align-items: center; gap: 6px;
  padding: 0 12px 0 20px;
  color: var(--text);
}
#chat-head-avatar { width: 40px; height: 40px; border-radius: 50%;
  object-fit: cover; flex-shrink: 0; }
.chat-head-info { flex: 1; min-width: 0; display: flex; flex-direction: column;
  justify-content: center; }
#active-chat-title { font-size: 16px; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#chat-head-status { font-size: 12px; color: var(--accent); min-height: 14px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#chat-settings-btn {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 20px; width: 40px; height: 40px;
  border-radius: 50%; flex-shrink: 0;
}
#chat-settings-btn:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }

/* chat body */
#chat-main {
  grid-area: chat-main;
  display: flex; flex-direction: column; min-height: 0; overflow: hidden;
  background:
    linear-gradient(rgba(11, 20, 26, 0.95), rgba(11, 20, 26, 0.95)),
    radial-gradient(circle at 25% 20%, rgba(76, 175, 80, 0.05), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(76, 175, 80, 0.04), transparent 45%),
    var(--bg-chat);
}
#chat-message-list {
  flex: 1 1 auto; min-height: 0;
  display: flex; flex-direction: column; gap: 2px;
  padding: 20px 8%;
  overflow-y: auto;
}
.empty-chat { margin: auto; color: var(--text-muted); font-size: 14px; text-align: center; }

/* message rows + bubbles */
.message-row { display: flex; margin-bottom: 4px; max-width: 100%; }
.you-message { justify-content: flex-end; }
.other-message { justify-content: flex-start; }
.message-content {
  position: relative;
  max-width: 65%;
  padding: 7px 11px 6px;
  border-radius: var(--radius-lg);
  font-size: 14.5px; line-height: 1.4;
  word-break: break-word; overflow-wrap: anywhere;
}
.you-message .message-content {
  background: var(--bubble-out);
  border-top-right-radius: 4px;
}
.other-message .message-content {
  background: var(--bubble-in);
  border-top-left-radius: 4px;
}
.message-content > img {
  width: 28px; height: 28px; border-radius: 50%;
  object-fit: cover; margin-bottom: 4px;
}
.message-sender { font-size: 12.5px; font-weight: 600; color: var(--accent); margin-bottom: 2px; }
.message-text { color: var(--text); }
.message-time { font-size: 11px; color: var(--text-faint); text-align: right; margin-top: 2px; }
.you-message .message-time { color: rgba(233, 237, 239, 0.55); }
.edited-marker { font-size: 11px; color: var(--text-faint); font-style: italic; }
.message-attachment-img {
  max-width: 240px; border-radius: 9px; display: block; margin-bottom: 4px;
}
.message-attachment-file {
  display: inline-block; margin-bottom: 4px;
  color: var(--text); text-decoration: underline;
}
.message-status { font-size: 11px; color: var(--text-faint); margin-top: 2px; text-align: right; }
.retry-btn {
  background: none; border: none; color: var(--danger);
  cursor: pointer; text-decoration: underline; font-size: 11px; padding: 0;
}
.seen-indicator { font-size: 11px; color: var(--accent); text-align: right; margin-top: 2px; }
.message-actions { display: none; gap: 8px; margin-top: 3px; }
.message-row:hover .message-actions { display: flex; }
.message-actions button { background: none; border: none; cursor: pointer; padding: 0; opacity: 0.7; }
.message-actions button:hover { opacity: 1; }

/* typing indicator */
.typing-indicator {
  flex-shrink: 0;
  padding: 4px 8%;
  color: var(--accent); font-size: 12px; font-style: italic;
  min-height: 20px; background: var(--bg-chat);
}

/* composer */
#chat-form {
  grid-area: chat-form;
  background: var(--bg-header);
  border-left: 1px solid var(--divider);
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
}
.composer-icon {
  background: none; border: none; color: var(--text-muted);
  font-size: 23px; cursor: pointer;
  width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.composer-icon:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }
#chat-form input[type="text"] {
  flex: 1;
  background: var(--bg-input);
  border-radius: var(--radius-pill);
  height: 44px; padding: 0 18px;
  font-size: 14.5px; border: none; color: var(--text);
}
#chat-form input[type="text"]:disabled { opacity: 0.6; }
.composer-send {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink);
  border: none; cursor: pointer; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 21px;
  transition: background 0.15s, transform 0.1s;
}
.composer-send:hover { background: var(--accent-hover); }
.composer-send:active { transform: scale(0.94); }

/*  Modals  */
.modal-wrapper {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(0, 0, 0, 0.55);
  display: none;
}
.modal {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 420px; max-width: 92%;
  background: var(--bg-sidebar);
  border: 1px solid var(--divider);
  border-radius: var(--radius-lg);
  max-height: 90vh;
  overflow-y: auto;
  z-index: 99;
}
.modal .modal-title {
  background: var(--bg-header);
  padding: 16px 20px;
  color: var(--text);
}
.modal .modal-title h2 { font-size: 16px; font-weight: 600; }
.modal .modal-body { padding: 18px 20px 22px; }
.modal form { display: flex; flex-direction: column; gap: 10px; }
.modal-close {
  position: absolute; right: 14px; top: 14px;
  width: 30px; height: 30px;
  display: grid; place-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: var(--text); text-decoration: none;
  font-size: 2.4rem; line-height: 1;
  transform: rotate(45deg);
  transition: background 0.15s;
}
.modal-close:hover { background: var(--danger); color: #fff; }

/* new-conversation modal */
.conv-tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.conv-tab {
  flex: 1; padding: 9px; cursor: pointer; border: none;
  background: var(--bg-input); color: var(--text-muted);
  border-radius: var(--radius); font-size: 13.5px; font-weight: 500;
}
.conv-tab.active { background: var(--accent); color: var(--accent-ink); }
#group-name, #user-search { width: 100%; margin-bottom: 10px; }
#user-results { max-height: 240px; overflow-y: auto; }
.user-result-row {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 8px; cursor: pointer; border-radius: var(--radius);
}
.user-result-row:hover { background: rgba(255, 255, 255, 0.05); }
.user-result-row.selected { background: var(--accent-soft); }
.user-result-row img { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; }
#selected-members { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.member-chip {
  background: var(--accent-soft); color: var(--accent);
  padding: 5px 10px; border-radius: var(--radius-pill);
  font-size: 12.5px; font-weight: 500; cursor: pointer;
}
#create-group-btn {
  width: 100%; padding: 12px; margin-top: 10px;
  background: var(--accent); color: var(--accent-ink);
  border: none; border-radius: var(--radius); cursor: pointer;
  font-size: 14px; font-weight: 600;
}
#conv-error { margin-top: 8px; }
#conv-error.show { color: var(--danger); }

/* settings modal */
.settings-label { color: var(--text-muted); font-size: 12.5px; margin: 14px 0 6px; }
.settings-member-row { display: flex; align-items: center; gap: 12px; padding: 8px 0;
  border-bottom: 1px solid var(--divider); }
.settings-member-row img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
.settings-member-row button { margin-left: auto; background: none; border: none;
  color: var(--text-muted); cursor: pointer; font-size: 13px; }
.settings-member-row button:hover { color: var(--danger); }
#settings-content input[type="text"] { width: 100%; margin-bottom: 8px; }
#settings-content button { cursor: pointer; }
#settings-content > button:not(.danger-btn) {
  background: var(--bg-input); color: var(--text); border: none;
  border-radius: var(--radius); padding: 9px 16px; font-size: 13.5px;
}
.danger-btn {
  background: transparent; color: var(--danger);
  border: 1px solid rgba(241, 92, 92, 0.4);
  border-radius: var(--radius); padding: 11px 12px;
  cursor: pointer; margin-top: 16px; display: block; width: 100%;
  font-size: 14px; font-weight: 500;
}
.danger-btn:hover { background: rgba(241, 92, 92, 0.1); }

/* ============ Users (admin) ============ */
.manageUser-container {
  max-width: 1000px; width: 100%;
  margin: 0 auto; padding: 28px 30px;
}
#title h2 { font-size: 22px; font-weight: 600; color: var(--text); }
#users-table { width: 100%; margin-top: 18px; overflow: auto;
  background: var(--bg-sidebar); border: 1px solid var(--divider);
  border-radius: var(--radius-lg); }
#users-table table { width: 100%; border-collapse: collapse; }
#users-table thead th {
  text-align: left; font-size: 12.5px; font-weight: 600; color: var(--text-muted);
  padding: 14px 20px; border-bottom: 1px solid var(--divider);
  background: transparent;
}
#users-table tbody td {
  padding: 12px 20px; border-bottom: 1px solid var(--divider);
  font-size: 14.5px; color: var(--text); vertical-align: middle;
}
#users-table tbody tr:last-child td { border-bottom: none; }
#users-table tbody tr:hover td { background: rgba(255, 255, 255, 0.02); }
#users-table tbody .name { display: flex; align-items: center; gap: 12px; }
#users-table tbody .name img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
#users-table tbody .name span { font-weight: 500; }
#users-table td.role { text-transform: capitalize; }
#users-table .manage img { width: 19px; cursor: pointer; opacity: 0.7; }
#users-table .manage img:hover { opacity: 1; }
#users-table thead th:last-of-type, #users-table tbody td:last-of-type { text-align: right; }

/* the admin "add user" plus button: float top-right of the page */
.manageUser-container { position: relative; }
.new-message-container.new-user { position: absolute; right: 30px; top: 22px; left: auto; bottom: auto; }
.new-message-container.new-user a { width: 40px; height: 40px; font-size: 23px; box-shadow: none; }

/*  Profile  */
.profile-container {
  max-width: 760px; width: 100%;
  margin: 28px auto; padding: 0 24px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px; align-items: start; color: var(--text);
}
.profile-container > h2 { display: none; }
.profile-form-card {
  background: var(--bg-sidebar); border: 1px solid var(--divider);
  border-radius: var(--radius-lg); padding: 24px;
}
.profile-form-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 16px; }
.profile-container form { width: 100%; }
.profile-container input[type="text"],
.profile-container input[type="password"] { width: 100%; margin-bottom: 4px; }
.profile-container label { display: block; font-size: 12.5px; color: var(--text-muted); margin: 12px 0 6px; }
.profile-container input[type="file"] { width: 100%; font-size: 13px; color: var(--text-muted); }
.profile-container button {
  margin-top: 18px; width: 100%; padding: 12px;
  background: var(--accent); color: var(--accent-ink);
  border: none; border-radius: var(--radius); cursor: pointer;
  font-size: 14px; font-weight: 600;
}
.profile-container button:hover { background: var(--accent-hover); }
.avatar-preview { text-align: center; }
.avatar-preview img {
  width: 96px; height: 96px; border-radius: 50%;
  object-fit: cover; margin-bottom: 10px;
  border: 3px solid var(--bg-input);
}
.profile-container .error { color: var(--danger); min-height: 16px; font-size: 1.2rem; }
.profile-container .error.show { display: block; }

/*  Toastify  */
.toastify {
  color: #fff !important;
  font-size: 14px !important;
  border-radius: var(--radius) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4) !important;
}

/*  Scrollbars  */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2a3942; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #374248; }

/*  Mobile back button */
#mobile-back-btn {
  display: none; background: none; border: none; color: var(--text);
  font-size: 22px; cursor: pointer; margin-right: 4px; flex-shrink: 0;
  width: 36px; height: 40px;
}

/*  Responsive  */
@media (max-width: 1000px) {
  #chat-container { grid-template-columns: 320px 1fr; }
  .new-message-container { left: 244px; }
}

@media (max-width: 768px) {
  #chat-container {
    grid-template-columns: 1fr;
    grid-template-rows: 64px 60px 1fr auto;
    grid-template-areas:
      "sidebar-head"
      "search"
      "conv-list"
      "conv-list";
  }
  #mobile-back-btn { display: inline-flex; align-items: center; justify-content: center; }
  .new-message-container { left: auto; right: 22px; }

  /* list view by default: hide the chat pane */
  #chat-title, #chat-main, #chat-form { display: none; }

  /* chat view: hide the list, show the chat */
  #chat-container.show-chat #sidebar-head,
  #chat-container.show-chat #search-container,
  #chat-container.show-chat #conversation-list,
  #chat-container.show-chat .new-message-container { display: none; }

  #chat-container.show-chat {
    grid-template-rows: 64px 1fr auto;
    grid-template-areas:
      "chat-title"
      "chat-main"
      "chat-form";
  }
  #chat-container.show-chat #chat-title,
  #chat-container.show-chat #chat-form { display: flex; }
  #chat-container.show-chat #chat-main { display: flex; }

  #chat-message-list { padding: 16px 14px; }
  .message-content { max-width: 80%; }
  .topnav a { padding: 8px 10px; }
}