/* Mobile app shell override
   Load this file LAST.
   This file should only affect screens <= 820px.
*/

.mobile-menu-button,
.mobile-back-button {
  display: none;
}

@media (max-width: 820px) {
  html,
  body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none;
  }

  body {
    background: #f7f7fc;
  }

  .app,
  .app-shell {
    width: 100vw;
    height: 100dvh;
    min-height: 100dvh;
    overflow: hidden;
    background: #f7f7fc;
  }

  /* ---------- Top mobile header ---------- */

  .top-header {
    position: relative !important;
    top: auto !important;
    z-index: 700 !important;
    height: 64px !important;
    width: 100% !important;
    display: flex !important;
    grid-template-columns: none !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 10px !important;
    padding: max(8px, env(safe-area-inset-top)) 14px 8px !important;
    border-bottom: 1px solid var(--border) !important;
    background: rgba(255, 255, 255, 0.96) !important;
    backdrop-filter: blur(14px);
    overflow: hidden !important;
  }

  .mobile-menu-button {
    width: 48px !important;
    height: 48px !important;
    display: grid !important;
    place-items: center !important;
    flex: 0 0 auto !important;
    border-radius: 18px !important;
    background: #f4f5fb !important;
    color: #66708f !important;
    font-size: 21px !important;
  }

  .mobile-menu-button:active {
    transform: scale(0.97);
  }

  .brand {
    margin-left: auto !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    min-width: 0 !important;
    flex: 0 1 auto !important;
    font-size: clamp(30px, 10vw, 42px) !important;
    line-height: 1 !important;
    letter-spacing: -0.06em !important;
    white-space: nowrap !important;
  }

  .brand-icon,
  .brand-mark {
    width: 34px !important;
    height: 34px !important;
    flex: 0 0 auto !important;
    display: grid !important;
    place-items: center !important;
    border-radius: 12px !important;
    font-size: 22px !important;
    background: transparent !important;
    color: var(--text-main) !important;
  }

  .global-search,
  .top-header .search-bar,
  .top-header .input-group,
  #globalSearch {
    display: none !important;
  }

  .header-actions,
  .profile-menu {
    display: none !important;
  }

  /* ---------- Main layout becomes single-screen app ---------- */

  .main-layout {
    position: relative !important;
    display: block !important;
    grid-template-columns: none !important;
    width: 100vw !important;
    height: calc(100dvh - 64px) !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
    gap: 0 !important;
    overflow: hidden !important;
  }

  .right-sidebar {
    display: none !important;
  }

  /* ---------- Left sidebar becomes drawer ---------- */

  .left-sidebar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    z-index: 1000 !important;
    width: min(320px, 86vw) !important;
    height: 100dvh !important;
    min-height: 0 !important;
    display: flex !important;
    padding: max(18px, env(safe-area-inset-top)) 18px 18px !important;
    border-radius: 0 28px 28px 0 !important;
    background: #ffffff !important;
    box-shadow: 18px 0 70px rgba(24, 20, 70, 0.2) !important;
    overflow-y: auto !important;
    transform: translateX(-110%) !important;
    transition: transform 0.24s ease !important;
  }

  body.mobile-menu-open .left-sidebar {
    transform: translateX(0) !important;
  }

  body.mobile-menu-open::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 900;
    background: rgba(16, 20, 40, 0.42);
    backdrop-filter: blur(4px);
  }

  .left-sidebar .user-card {
    flex-shrink: 0;
  }

  .left-sidebar .premium-card {
    margin-top: auto;
  }

  /* ---------- Messages and chat are separate mobile screens ---------- */

  .message-list-panel,
  .conversation-panel,
  .chat-panel {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    min-height: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: #ffffff !important;
  }

  .message-list-panel,
  .conversation-panel {
    z-index: 20 !important;
    padding: 14px 0 0 !important;
    overflow: hidden !important;
    transition:
      transform 0.22s ease,
      opacity 0.22s ease !important;
  }

  .conversation-panel {
    display: flex !important;
  }

  .chat-panel {
    z-index: 40 !important;
    display: flex !important;
    flex-direction: column !important;
    transform: translateX(100%) !important;
    visibility: hidden !important;
    transition:
      transform 0.24s ease,
      visibility 0.24s ease !important;
  }

  body.mobile-chat-open .chat-panel {
    transform: translateX(0) !important;
    visibility: visible !important;
  }

  body.mobile-chat-open .message-list-panel,
  body.mobile-chat-open .conversation-panel {
    transform: translateX(-20%) !important;
    opacity: 0 !important;
    pointer-events: none !important;
  }

  /* ---------- Message list screen ---------- */

  .message-list-panel h2,
  .conversation-panel h2,
  .panel-header {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .message-search {
    width: calc(100% - 32px) !important;
    height: 52px !important;
    margin: 14px 16px 18px !important;
    padding: 0 16px !important;
    border-radius: 20px !important;
    font-size: 16px !important;
  }

  .message-tabs {
    margin: 0 0 18px !important;
    padding: 0 16px !important;
    gap: 12px !important;
    overflow-x: auto !important;
  }

  .message-tabs button {
    flex: 0 0 auto !important;
    padding: 10px 16px !important;
    font-size: 15px !important;
  }

  .conversation-list {
    height: calc(100dvh - 250px) !important;
    padding: 0 8px 22px !important;
    overflow-y: auto !important;
  }

  .conversation {
    width: 100% !important;
    min-height: 82px !important;
    display: grid !important;
    grid-template-columns: 62px minmax(0, 1fr) !important;
    gap: 12px !important;
    padding: 13px 14px !important;
    border-radius: 22px !important;
  }

  .conversation img {
    width: 58px !important;
    height: 58px !important;
  }

  .conversation-top strong {
    font-size: 16px !important;
  }

  .conversation-top small {
    font-size: 14px !important;
  }

  .conversation p {
    max-width: 100% !important;
    font-size: 14px !important;
  }

  /* ---------- Chat screen ---------- */

  .chat-header {
    height: 66px !important;
    flex: 0 0 auto !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    gap: 10px !important;
    padding: 0 12px !important;
    border-bottom: 1px solid var(--border) !important;
    background: #ffffff !important;
  }

  .mobile-back-button {
    width: 42px !important;
    height: 42px !important;
    display: grid !important;
    place-items: center !important;
    flex: 0 0 auto !important;
    border-radius: 15px !important;
    background: #f4f5fb !important;
    color: #66708f !important;
    font-size: 18px !important;
  }

  .chat-user {
    min-width: 0 !important;
    flex: 1 1 auto !important;
    gap: 10px !important;
  }

  .avatar-stack img {
    width: 40px !important;
    height: 40px !important;
    border-width: 2px !important;
  }

  #chatName,
  .chat-user h2 {
    max-width: 145px !important;
    overflow: hidden !important;
    font-size: 16px !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
  }

  .chat-user p {
    font-size: 12px !important;
  }

  .chat-actions {
    margin-left: auto !important;
    flex: 0 0 auto !important;
    display: flex !important;
    gap: 6px !important;
  }

  .chat-actions button {
    width: 34px !important;
    height: 34px !important;
    display: grid !important;
    place-items: center !important;
    font-size: 16px !important;
  }

  .chat-body {
    flex: 1 1 auto !important;
    min-height: 0 !important;
    padding: 16px 14px 18px !important;
    overflow-y: auto !important;
    background:
      radial-gradient(circle at 70% 18%, rgba(91, 53, 245, 0.04), transparent 26%),
      #ffffff !important;
  }

  .message-row {
    gap: 8px !important;
    margin-bottom: 14px !important;
  }

  .message-row > img {
    width: 34px !important;
    height: 34px !important;
  }

  .message-bubble {
    max-width: 78vw !important;
    padding: 10px 13px !important;
    font-size: 14px !important;
  }

  .chat-message-image {
    max-width: 76vw !important;
    max-height: 330px !important;
    border-radius: 16px !important;
  }

  .chat-file-card {
    min-width: 0 !important;
    max-width: 74vw !important;
  }

  .message-composer {
    height: auto !important;
    min-height: 66px !important;
    flex: 0 0 auto !important;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom)) !important;
    border-top: 1px solid var(--border) !important;
    background: #ffffff !important;
  }

  #messageForm {
    width: 100% !important;
  }

  .message-composer input,
  #messageInput {
    min-width: 0 !important;
    font-size: 16px !important;
  }

  .composer-actions {
    gap: 8px !important;
  }

  .composer-actions button {
    width: 32px !important;
    height: 32px !important;
  }

  .send-button {
    width: 42px !important;
    height: 42px !important;
    flex: 0 0 auto !important;
  }

  /* ---------- Chat details / map on mobile ---------- */

  .chat-details-view {
    height: 100% !important;
    padding: 14px !important;
    gap: 14px !important;
    overflow: hidden !important;
  }

  .chat-details-meta {
    grid-template-columns: 1fr !important;
  }

  .chat-details-map-wrap,
  .chat-details-map {
    min-height: 300px !important;
  }

  /* ---------- Full page tabs ---------- */

  .full-page-panel {
    grid-column: auto !important;
    width: 100% !important;
    height: calc(100dvh - 64px) !important;
    padding: 18px 14px 28px !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    overflow-y: auto !important;
  }

  .tab-page-header {
    align-items: flex-start !important;
    flex-direction: column !important;
    gap: 14px !important;
    margin-bottom: 18px !important;
  }

  .tab-page-header h2 {
    font-size: 28px !important;
  }

  .schedule-dashboard-grid,
  .friends-dashboard-grid,
  .settings-dashboard-grid,
  .friends-content-grid,
  .explore-content-grid,
  .notifications-content-grid,
  .settings-content-grid,
  .tab-content-grid,
  .explore-featured-card,
  .explore-grid,
  .settings-form-grid,
  .appearance-options {
    grid-template-columns: 1fr !important;
  }

  .tab-card,
  .overview-card,
  .settings-detail-card,
  .settings-menu-card {
    border-radius: 20px !important;
  }

  .settings-menu-card {
    display: flex !important;
    gap: 8px !important;
    overflow-x: auto !important;
  }

  .settings-menu-item {
    flex: 0 0 auto !important;
  }

  /* ---------- Emoji / lightbox mobile ---------- */

  .emoji-picker,
  .chat-emoji-picker {
    left: 8px !important;
    right: 8px !important;
    bottom: 74px !important;
    width: auto !important;
  }

  .chat-image-lightbox,
  .chat-image-modal {
    padding: 18px !important;
  }

  .chat-image-lightbox-prev,
  .chat-image-modal-prev {
    left: 8px !important;
  }

  .chat-image-lightbox-next,
  .chat-image-modal-next {
    right: 8px !important;
  }

  .chat-image-lightbox-close,
  .chat-image-modal-close {
    top: 8px !important;
    right: 8px !important;
  }
}