/* Shared desktop/web visual layer. Transport and message layout semantics stay in styles.css. */
:root {
  --im-blue: #356de8;
  --im-blue-press: #2557c7;
  --im-blue-soft: #edf3ff;
  --im-line: #e8edf3;
  --im-shell: #f5f7fb;
  --im-card: #fff;
  --ui-ink: #223047;
  --ui-muted: #748197;
  --ui-subtle: #f6f8fb;
  --ui-radius: 14px;
}
body {
  color: var(--ui-ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button { transition: background .15s, color .15s, border-color .15s, box-shadow .15s; }
button:focus-visible, a:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid #90b4ff;
  outline-offset: 3px;
}
input:focus-visible, textarea:focus-visible {
  outline: 0;
  border-color: var(--im-blue);
  box-shadow: 0 0 0 3px var(--im-blue-soft);
}
::selection { background: #cfe0ff; color: #153767; }
* { scrollbar-width: thin; scrollbar-color: #cdd5e1 transparent; }

/* Frame and navigation: quiet surfaces, one consistent accent. */
#screen-main.wc-shell { height: 100dvh; }
.wc-titlebar { height: 42px; padding: 0 18px; background: #fff; }
.wc-titlebar-title { display: flex; align-items: center; gap: 10px; font-size: 12px; color: #6b7890; font-weight: 500; }
.wc-brand-mark { display: grid; place-items: center; width: 23px; height: 23px; border-radius: 8px; background: #356de8; color: white; font-size: 14px; font-weight: 800; }
.wc-brand-divider { color: #d4dbe6; margin: 0 2px; }
.wc-rail { width: 76px; padding: 23px 0 18px; background: #182638; border-right: 0; gap: 6px; }
.wc-rail-user-row { gap: 8px; margin-bottom: 13px; }
.wc-self-avatar { width: 42px; height: 42px; border: 2px solid #ffffff40; border-radius: 15px; box-shadow: none; font-size: 18px; }
.wc-self-avatar-img { border-radius: 12px; }
.wc-rail-ws.wc-rail-ws--peer { position: absolute; top: 35px; right: 8px; background: #182638; border: 3px solid #182638; border-radius: 50%; font-size: 10px; line-height: 10px; }
.wc-rail-user-row { position: relative; }
.wc-rail-access-select { width: 54px; max-width: 54px; border-color: #ffffff18; color: #b6c4d8; background: #ffffff09; font-size: 10px; border-radius: 6px; }
.wc-rail-access-select option { color: #223047; background: white; }
.wc-rail-icons { gap: 10px; }
.wc-rail-btn, .wc-rail-settings { width: 46px; height: 46px; border: 1px solid transparent; border-radius: 14px; color: #8fa1bb; }
.wc-rail-btn .wc-ico, .wc-rail-settings .wc-ico { width: 23px; height: 23px; }
.wc-rail-btn:hover, .wc-rail-settings:hover { color: #e1eaff; background: #ffffff0c; }
.wc-rail-btn.active { color: #b9d4ff; background: #356de82e; border-color: #638ff02b; box-shadow: none; }
.wc-rail-tab-badge { border: 2px solid #182638; }
.wc-secondary-head { height: 72px; background: white; padding-left: 28px; border-bottom-color: var(--im-line); }

/* Conversation list */
.msg-split.wc-msg-split, .wc-contacts-split { grid-template-columns: minmax(265px, 310px) minmax(0, 1fr); }
.wc-conv-col { min-width: 0; background: #fff; }
.wc-conv-top { min-height: 79px; padding: 21px 21px 14px; align-items: flex-start; flex-direction: column; gap: 7px; }
.wc-app-name { font-size: 22px; font-weight: 700; letter-spacing: -.5px; color: var(--ui-ink); }
.wc-title-dot { width: 6px; height: 6px; margin-left: 3px; }
.wc-title-dot--ok { background: #269783; box-shadow: 0 0 0 3px #26978315; }
.wc-connection-label { color: var(--ui-muted); font-size: 11px; }
.wc-connection-label[data-state="online"] { color: #508276; }
.wc-search-row { padding: 2px 16px 17px; gap: 8px; }
.wc-search-field { order: -1; min-width: 0; height: 38px; border: 1px solid transparent; background: #f2f5fa; border-radius: 10px; }
.wc-search-field:focus-within { border-color: #b0c7f7; background: #fff; box-shadow: 0 0 0 3px #edf3ff; }
.wc-search-input { font-size: 12px; }
.wc-search-input::placeholder { color: #8390a4; }
.wc-search-plus { width: 38px; height: 38px; border-radius: 10px; background: var(--im-blue-soft); color: var(--im-blue); font-size: 25px; }
.wc-conv-list.list { padding: 2px 9px 18px; margin: 0; background: #fff; }
.wc-conv-item { min-height: 78px; margin: 3px 0; padding: 14px 12px; border: 1px solid transparent; border-radius: 12px; gap: 12px; }
.wc-conv-item:hover { background: #f6f8fc; }
.wc-conv-item.wc-conv-active { background: #edf3ff; border-color: #dce7fd; box-shadow: none; }
.wc-conv-avatar { width: 44px; height: 44px; border-radius: 15px; box-shadow: none; font-size: 17px; }
.wc-conv-avatar-img { border-radius: inherit; }
.wc-conv-line1 { margin-bottom: 6px; gap: 7px; }
.wc-conv-name { color: #233249; font-size: 14px; font-weight: 600; }
.wc-conv-preview { color: #78869a; font-size: 12px; line-height: 1.5; }
.wc-conv-time { color: #8b97a9; font-size: 10px; }
.wc-conv-unread { min-width: 18px; height: 18px; line-height: 18px; font-size: 10px; box-shadow: 0 0 0 2px white; background: var(--im-blue); }

/* Chat header and message canvas */
.wc-chat-col { min-width: 0; background: #f5f7fb; }
.wc-chat-head.chat-head { height: 76px; padding: 0 28px; background: #fff; }
.wc-chat-head-avatar { width: 40px; height: 40px; border-radius: 14px; box-shadow: none; }
.wc-chat-title { font-size: 16px; color: var(--ui-ink); }
.wc-mobile-back { display: none; border: 0; background: transparent; color: #5c789f; font-size: 25px; cursor: pointer; padding: 5px 10px; }
.wc-head-btn { width: 38px; height: 36px; border-radius: 10px; color: #6b7d99; background: #f6f8fc; font-size: 25px; }
.wc-msg-area.messages { padding: 28px 32px 20px; background: var(--chat-background, #f5f7fb); }
.wc-chat-welcome { display: none; position: absolute; inset: 0; align-items: center; justify-content: center; flex-direction: column; pointer-events: none; padding: 24px; text-align: center; }
.wc-chat-col:has(.wc-chat-head-avatar--placeholder) .wc-chat-welcome { display: flex; }
.wc-chat-welcome h2 { font-size: 22px; font-weight: 600; margin: 24px 0 10px; color: #61748d; }
.wc-chat-welcome p { font-size: 13px; line-height: 1.9; color: #95a1b3; margin: 0; }
.wc-welcome-icon { display: grid; place-items: center; width: 76px; height: 76px; border-radius: 26px; color: #90aad2; background: #eaf0f9; font-size: 38px; }
.wc-msg-row { margin-bottom: 20px; }
.wc-bubble { max-width: min(78%, 640px); padding: 11px 15px; border-radius: 16px; line-height: 1.65; box-shadow: 0 2px 6px #22304704; }
.wc-msg-other .wc-bubble { background: white; border: 1px solid #e6ebf2; border-top-left-radius: 5px; }
.wc-msg-mine .wc-bubble { background: #356de8; border: 1px solid #356de8; border-top-right-radius: 5px; box-shadow: 0 3px 9px #356de812; }
.wc-msg-meta { gap: 8px; margin-bottom: 5px; color: #8190a5; font-size: 10px; }
.wc-msg-mine .wc-msg-meta { color: #e1ebff; }
.wc-msg-text { font-size: 14px; line-height: 1.65; }
.wc-msg-system-inner { border-radius: 8px; background: #eaf0f6; color: #7a889d; font-size: 11px; padding: 4px 10px; }
.wc-msg-reply-ref { border-radius: 7px; }
.wc-msg-img-wrap { border-radius: 10px; overflow: hidden; }
.wc-chat-conn-bar { margin: 0 22px 8px; padding: 10px 14px; border: 1px solid #f2d8ac; border-radius: 10px; color: #976820; background: #fff9ee; font-size: 12px; }
.wc-pin-bar { background: white; border-bottom-color: var(--im-line); padding-inline: 25px; }
.wc-chat-newmsg-chip { border-radius: 12px; border-color: #dce6f7; box-shadow: 0 4px 20px #25477812; }

/* Composer: keep all existing media actions, without a heavy framed text box. */
.wc-composer.composer { flex-shrink: 0; margin: 0 22px 18px; padding: 12px 16px 12px; border: 1px solid #e1e8f2; border-radius: 16px; background: #fff; box-shadow: 0 4px 18px #24395705; gap: 8px; }
.wc-composer:focus-within { border-color: #abc4f5; box-shadow: 0 0 0 3px #356de808; }
.wc-composer-toolbar { min-height: 30px; gap: 8px; }
.wc-composer-toolbar-icons { gap: 3px; }
.wc-composer-ico { width: 30px; height: 30px; border-radius: 8px; color: #8391a5; }
.wc-composer-ico:hover:not(:disabled) { background: #edf3ff; color: #356de8; }
.wc-composer textarea { min-height: 70px; max-height: 180px; padding: 8px 3px; resize: vertical; border: 0; border-radius: 0; box-shadow: none; font-size: 14px; }
.wc-composer textarea:focus { border: 0; box-shadow: none; }
.wc-composer textarea::placeholder { color: #99a5b6; }
.wc-composer-hint { color: #8b98ab; font-size: 10px; white-space: normal; line-height: 1.5; }
.wc-send-btn { padding: 9px 24px; border-radius: 9px; box-shadow: none; font-size: 13px; }
.wc-reply-bar { border-radius: 8px; }

/* Profile drawer and shared remark editor */
.wc-drawer-backdrop { background: #1826382e; }
.wc-drawer-panel { width: min(400px, 100%); background: #fbfcfe; border-left-color: #e3eaf3; box-shadow: -16px 0 50px #22304712; }
.wc-drawer-head { height: 72px; padding: 0 22px 0 26px; background: #fff; border-bottom-color: var(--im-line); font-size: 16px; color: var(--ui-ink); }
.wc-drawer-x { width: 32px; height: 32px; border-radius: 10px; color: #7e8c9f; background: #f2f5fa; }
.wc-drawer-body { padding: 26px 24px 30px; overscroll-behavior: contain; }
.wc-drawer-peer { padding: 0 0 25px; margin-bottom: 24px; border-bottom-color: #e9eef5; }
.wc-drawer-peer-avatar { width: 76px; height: 76px; border-radius: 25px; box-shadow: 0 5px 16px #22304710; margin-bottom: 16px; font-size: 29px; }
.wc-drawer-peer-name { font-size: 21px; color: #25354d; overflow-wrap: anywhere; }
.wc-drawer-peer-sub { margin-top: 7px; color: #718198; font-size: 13px; }
.wc-drawer-peer-id { color: #8d99aa; font-size: 11px; letter-spacing: .25px; overflow-wrap: anywhere; }
.wc-profile-badge { display: inline-block; margin-top: 13px; padding: 4px 10px; border-radius: 6px; color: #308974; background: #eaf6f1; font-size: 10px; }
.wc-remark-editor { margin: 0; text-align: left; width: 100%; }
.wc-field-heading { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; gap: 10px; }
.wc-field-heading label { font-size: 13px; font-weight: 600; color: #34445d; }
.wc-field-heading > span { color: #8b97a8; font-size: 10px; }
.wc-remark-controls { display: flex; align-items: stretch; gap: 8px; }
.wc-remark-controls input { min-width: 0; width: 0; flex: 1; padding: 11px 12px; border-radius: 10px; border: 1px solid #dce4ef; background: #fff; color: #26384f; font-size: 13px; }
.wc-remark-controls input::placeholder { color: #8c99ad; }
.wc-remark-controls input[aria-invalid="true"] { border-color: #d66a6a; }
.wc-primary-btn { border: 1px solid transparent; border-radius: 10px; background: var(--im-blue); color: #fff; font-size: 12px; font-weight: 600; padding: 10px 14px; min-width: 83px; cursor: pointer; white-space: nowrap; }
.wc-primary-btn:hover:not(:disabled) { background: var(--im-blue-press); }
.wc-primary-btn:disabled { background: #e7edf8; color: #7387aa; cursor: default; }
.wc-field-status { min-height: 32px; margin: 8px 0 0; font-size: 11px; color: #8190a6; line-height: 1.55; overflow-wrap: anywhere; }
.wc-field-status[data-state="success"] { color: #26856b; }
.wc-field-status[data-state="error"] { color: #c34848; }
.wc-drawer-section { margin-bottom: 22px; }
.wc-drawer-rows { border: 1px solid #e6ecf4; border-radius: 14px; background: #fff; }
.wc-drawer-switch-row { padding: 17px 16px; font-size: 13px; color: #34445d; }
.wc-drawer-switch-row small { display: block; margin-top: 5px; color: #8d99aa; font-size: 10px; font-weight: 400; }
.wc-switch { width: 38px; height: 22px; }
.wc-switch i { background: #dce3ed; }
.wc-switch i::before { width: 18px; height: 18px; box-shadow: 0 1px 3px #23344f15; }
.wc-switch input:checked + i::before { transform: translateX(16px); }
.wc-switch input:focus-visible + i { outline: 3px solid #90b4ff; outline-offset: 3px; }
.wc-drawer-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
#drawerClearView { grid-column: 1 / -1; }
.wc-drawer-btn { padding: 12px 9px; border-radius: 10px; font-size: 12px; border-color: #e3e9f2; }
.wc-drawer-btn--muted { color: #61728c; }
.wc-drawer-btn--danger { color: #bf6267; background: #fff; border-color: #efdfe3; }
.wc-drawer-btn--danger:hover { background: #fff1f2; border-color: #e6b7bd; }
.wc-drawer-footnote { font-size: 10px; line-height: 1.8; color: #8996a9; }

/* Contacts, other workspaces and modals share the same visual vocabulary. */
.wc-contacts-sidebar { background: white; }
.wc-contacts-detail { background: #f7f9fc; }
.wc-contact-row { margin: 3px 8px; border-radius: 10px; padding: 12px; }
.wc-contact-row:hover, .wc-cn-row:hover { background: #f4f7fc; }
.wc-contact-row.wc-contact-active, .wc-cn-row.wc-cn-active { background: #edf3ff; color: #356de8; }
.wc-alpha-sticky { background: #fff; padding-left: 22px; font-size: 11px; color: #8c99ad; }
.wc-friend-detail { width: min(460px, 100%); margin: auto; padding: 36px; background: #fff; border: 1px solid #e8edf5; border-radius: 20px; box-shadow: 0 6px 28px #22304704; }
.wc-friend-detail .wc-remark-editor { margin-top: 28px; }
.wc-friend-detail-msg { margin-top: 20px; border-radius: 10px; background: #356de8; font-size: 13px; }
.wc-friend-detail-name { color: var(--ui-ink); overflow-wrap: anywhere; }
.wc-friend-detail-sub { overflow-wrap: anywhere; }
.wc-user-peek .wc-remark-editor { margin-top: 24px; }
.wc-user-peek-name, .wc-user-peek-sub { overflow-wrap: anywhere; }
.modal-overlay { background: #18263840; }
.modal-box { border: 1px solid #e3e9f2; border-radius: 18px; box-shadow: 0 24px 80px #152d4e25; }
.modal-head { padding: 18px 22px; border-bottom: 1px solid var(--im-line); color: #2b3c54; }
.modal-body { padding: 22px; }
.modal-footer { padding: 15px 22px; border-top: 1px solid var(--im-line); background: #fafbfd; }
.modal-footer button { border-radius: 9px; padding: 9px 18px; font-size: 13px; }
.modal-footer button.primary { background: #356de8; }
.modal-x { border-radius: 8px; color: #8190a6; }
.form-row input, .form-row textarea, .form-row select, .wc-drawer-input { border-radius: 10px; border-color: #dfe6f0; padding: 10px 12px; color: #34445d; }
.wc-msg-ctx-menu, .wc-emoji-popover, .wc-quick-popover, .wc-chat-plus-menu { border-radius: 14px; border-color: #e1e8f3; box-shadow: 0 10px 35px #23395715; }
.wc-msg-ctx-menu button { border-radius: 7px; color: #40536d; }
.wc-msg-ctx-menu button:hover { background: #edf3ff; }
.moment-card, .subpanel, .fav-item { border-color: #e7edf5; border-radius: 14px; }

/* Auth uses CSS artwork, so missing login_reg.jpg cannot break the composition. */
#screen-auth { background: #f7f9fc; }
.auth-visual { flex: 1 1 48%; background-image: none; background-color: #192d4a; overflow: hidden; }
.auth-visual::before, .auth-visual::after { content: ''; position: absolute; width: 360px; height: 360px; border: 1px solid #ffffff16; border-radius: 80px; transform: rotate(-20deg); right: -120px; top: 15%; }
.auth-visual::after { width: 260px; height: 260px; right: -55px; top: calc(15% + 50px); background: #ffffff04; }
.auth-visual-overlay { background: radial-gradient(ellipse at 0 100%, #3467ac55, transparent 70%); }
.auth-visual-brand { left: 12%; right: 8%; bottom: 22%; text-shadow: none; }
.auth-visual-eyebrow { display: block; font-size: 13px; color: #9db9df; letter-spacing: 3px; margin-bottom: 25px; }
.auth-visual-logo { font-size: clamp(26px, 3.6vw, 48px); line-height: 1.5; letter-spacing: -.5px; font-weight: 650; }
.auth-visual-tagline { margin-top: 24px; color: #a9bedb; font-size: 13px; }
.auth-main { background: #f7f9fc; padding: 40px; }
.auth-card { max-width: 410px; padding: 28px 32px 24px; border-radius: 20px; border: 1px solid #e6ecf5; box-shadow: 0 15px 55px #1c355b06; }
.auth-lang-row { border-bottom-color: #edf1f6; }
.auth-face-inner { width: 60px; height: 60px; border-radius: 20px; background: #356de8; box-shadow: 0 6px 20px #356de81a; }
.auth-form-title { color: #24364f; font-size: 23px; }
.auth-device-hint--compact { text-align: center; color: #8492a7; margin-bottom: 22px; font-size: 12px; }
.auth-srv-details { font-size: 11px; border-color: #e8edf5; padding: 10px 12px; background: #f8fafd; }
.auth-srv-details summary { color: #75859c; font-weight: 500; }
.auth-card input { border-color: #dfe6f0; border-radius: 10px; padding: 12px 13px; margin-top: 10px; }
.auth-card button { background: #356de8; padding: 12px; border-radius: 10px; margin-top: 16px; }
.auth-links { margin-top: 20px; color: #a8b3c5; font-size: 12px; }
.auth-links a { color: #557db9; }
.auth-card .hint { font-size: 12px; line-height: 1.7; }

/* Group identity: a small enamel-like seal, distinct from the unread badge above. */
.wc-conv-avatar-wrap { position: relative; overflow: visible; flex-shrink: 0; }
.wc-group-mark { position: absolute; right: -4px; bottom: -3px; display: grid; place-items: center; width: 20px; height: 20px; box-sizing: border-box; border: 2px solid #fff; border-radius: 7px; background: linear-gradient(135deg, #20b5c4, #4366ed 75%); color: #fff; font-size: 11px; font-weight: 800; line-height: 1; text-shadow: 0 1px 1px #18387355; box-shadow: 0 2px 5px #3157a63b, inset 0 1px 0 #ffffff6b; pointer-events: none; }
.wc-conv-active .wc-group-mark { border-color: #eaf0fc; }
.wc-ginfo-head { gap: 10px; padding: 4px 0 23px; }
.wc-ginfo-av-wrap, .wc-ginfo-av-img { width: 76px; height: 76px; border-radius: 24px; }
.wc-drawer-group .wc-ginfo-av-wrap > .wc-gcell-av { width: 100%; height: 100%; border-radius: inherit; font-size: 30px; box-shadow: 0 5px 16px #22304710; }
.wc-ginfo-edit-av { background: #456fec; width: 28px; height: 28px; border-radius: 10px; right: -5px; bottom: -3px; }
.wc-ginfo-title { margin: 7px 0 0; font-size: 21px; line-height: 1.4; font-weight: 650; color: #293b54; text-align: center; overflow-wrap: anywhere; max-width: 100%; }
.wc-ginfo-chips { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: center; font-size: 11px; color: #8694a9; }
.wc-group-type-chip, .wc-group-role-chip { padding: 4px 7px; border-radius: 6px; background: #edf2ff; color: #5472c1; }
.wc-group-role-chip { background: #eaf6f1; color: #478776; }
.wc-group-id-copy { background: none; border: none; color: #8b9aaf; font: inherit; font-size: 10px; cursor: pointer; padding: 4px 8px; border-radius: 6px; overflow-wrap: anywhere; }
.wc-group-id-copy:hover { color: #356de8; background: #edf3ff; }
.wc-group-id-copy span { margin-left: 8px; }
.wc-group-card { border: 1px solid #e5ebf4; border-radius: 15px; background: #fff; margin-bottom: 15px; overflow: hidden; }
.wc-group-field { padding: 16px; margin: 0; }
.wc-group-field + .wc-group-field { border-top: 1px solid #edf1f6; }
.wc-group-field .wc-field-heading { gap: 8px; margin-bottom: 11px; }
.wc-group-field .wc-field-heading > span:last-child { font-size: 10px; }
.wc-group-field input, .wc-group-field textarea { display: block; width: 100%; min-width: 0; box-sizing: border-box; font: inherit; font-size: 12px; line-height: 1.7; border: 1px solid #dfe7f2; border-radius: 9px; padding: 9px 11px; background: #fbfcff; color: #34465f; resize: vertical; }
.wc-group-field input:focus, .wc-group-field textarea:focus { border-color: #7c9ff4; outline: 3px solid #487beb12; background: #fff; }
.wc-group-field [aria-invalid="true"] { border-color: #d99299; }
.wc-group-field-footer { display: flex; gap: 8px; align-items: center; justify-content: space-between; margin-top: 11px; }
.wc-group-field-footer .wc-field-status { margin: 0; font-size: 10px; line-height: 1.6; }
.wc-group-field-footer .wc-primary-btn { font-size: 11px; min-width: 84px; padding: 8px 11px; border-radius: 8px; }
.wc-group-readonly { color: #52647d; font-size: 12px; line-height: 1.9; white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; }
.wc-drawer-group .wc-group-section { padding: 16px; margin: 0; }
.wc-drawer-group .wc-group-section + .wc-group-section { border-top: 1px solid #edf1f6; }
.wc-drawer-group .wc-group-sec-head { color: #34465f; font-size: 12px; font-weight: 600; margin-bottom: 15px; }
.wc-drawer-group .wc-group-inline-link { color: #718dbd; font-size: 11px; font-weight: 400; }
.wc-drawer-group .wc-gcell-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 8px; }
.wc-drawer-group .wc-gcell { width: 100%; }
.wc-drawer-group .wc-gcell-av { width: 42px; height: 42px; border-radius: 14px; font-size: 16px; }
.wc-drawer-group .wc-gcell-name { max-width: 100%; width: 100%; color: #687b93; font-size: 10px; }
.wc-drawer-group .wc-gcell-badge { border-radius: 4px; font-size: 9px; }
.wc-gcell-role-slot { display: flex; align-items: center; justify-content: center; height: 16px; }
.wc-group-members-note { margin: 14px 0 0; color: #8999ad; font-size: 10px; line-height: 1.7; }
.wc-drawer-group button.wc-gcell-add { border: none; background: transparent; padding: 4px 2px; }
.wc-drawer-group .wc-gcell-add-plus { width: 42px; height: 42px; border-radius: 14px; border-color: #d7e2f5; background: #f4f7fe; color: #6484ba; }
.wc-drawer-group .wc-group-row { color: #475b76; padding: 15px 16px; font-size: 12px; border-color: #edf1f6; }
.wc-group-links .wc-group-row:last-child { border-bottom: none; }
.wc-drawer-group .wc-group-row:hover { background: #f7faff; }
.wc-drawer-group .wc-group-pad { margin-bottom: 15px; padding-top: 0; }
.wc-group-setting-value { margin-left: auto; color: #7a8aa1; font-size: 12px; }

/* Local, per-group backgrounds. Presets stay light to preserve text contrast. */
.modal-box:has(.wc-background-picker) .modal-footer:empty { display: none; }
.wc-background-hint { margin: 0 0 16px; color: #718198; font-size: 12px; line-height: 1.7; }
.wc-background-preview { min-height: 156px; padding: 18px; border-radius: 14px; border: 1px solid #dfe7ef; display: flex; flex-direction: column; gap: 14px; }
.wc-background-preview-caption { color: #63758b; font-size: 11px; text-align: center; }
.wc-background-bubble { align-self: flex-start; max-width: 88%; padding: 10px 13px; border: 1px solid #e6ebf2; border-radius: 4px 14px 14px; background: white; color: #233249; font-size: 13px; line-height: 1.6; }
.wc-background-bubble--mine { align-self: flex-end; background: #356de8; border-color: #356de8; color: white; border-radius: 14px 4px 14px 14px; }
.wc-background-options { border: 0; padding: 0; margin: 18px 0 0; min-width: 0; }
.wc-background-options legend { padding: 0; margin-bottom: 10px; color: #344760; font-size: 13px; font-weight: 600; }
.wc-background-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.wc-background-option { cursor: pointer; position: relative; display: flex; flex-direction: column; gap: 6px; text-align: center; }
.wc-background-option input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.wc-background-swatch { height: 52px; border-radius: 10px; border: 2px solid #e4eaf2; display: flex; justify-content: flex-end; align-items: flex-end; padding: 5px; }
.wc-background-check { display: none; background: #356de8; color: white; width: 19px; height: 19px; border-radius: 50%; font-size: 12px; line-height: 19px; }
.wc-background-name { font-size: 12px; color: #63748b; }
.wc-background-option input:checked + .wc-background-swatch { border-color: #356de8; }
.wc-background-option input:checked + .wc-background-swatch .wc-background-check { display: block; }
.wc-background-option input:checked ~ .wc-background-name { color: #356de8; font-weight: 600; }
.wc-background-option input:focus-visible + .wc-background-swatch { outline: 2px solid #356de8; outline-offset: 3px; }
.wc-background-picker > .wc-field-status { min-height: 18px; margin: 16px 0 12px; }
.wc-background-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.wc-background-actions > span { flex: 1; }
.wc-background-actions button { border: 1px solid #dfe7f1; background: white; color: #607493; border-radius: 9px; padding: 9px 12px; cursor: pointer; font-size: 12px; }
.wc-background-actions .wc-primary-btn { color: white; background: #356de8; border-color: #356de8; }
.wc-background-actions button:disabled { opacity: .45; cursor: default; }
.wc-drawer-group .wc-group-danger-zone { border: 1px solid #efdfe4; border-radius: 14px; background: #fff; overflow: hidden; margin-top: 22px; }
.wc-drawer-group .wc-group-row-warn, .wc-drawer-group .wc-group-row-danger { color: #bd626d; }
.wc-drawer-group .wc-group-foot-hint { color: #929fb1; font-size: 10px; line-height: 1.9; margin: 17px 2px 0; }
.wc-dev-proxy-note { color: #5a7cad; font-size: 11px; line-height: 1.7; margin: 8px 0; }

@media (max-width: 1080px) {
  .msg-split.wc-msg-split, .wc-contacts-split { grid-template-columns: 265px minmax(0, 1fr); }
  .wc-rail { width: 64px; }
  .wc-msg-area.messages { padding: 22px 20px; }
  .wc-chat-head.chat-head { padding: 0 20px; }
  .wc-composer.composer { margin-inline: 14px; }
  .wc-drawer-panel { width: min(370px, 100%); }
}
@media (max-width: 760px) {
  .auth-visual { min-height: 195px; flex: 0 0 195px; }
  .auth-visual-brand { left: 28px; bottom: 26px; }
  .auth-visual-eyebrow { margin-bottom: 10px; font-size: 10px; }
  .auth-visual-logo { font-size: 26px; }
  .auth-visual-tagline { display: none; }
  .auth-main { padding: 24px 16px; }
  .wc-titlebar { padding-left: 10px; }
  .wc-titlebar-title { font-size: 10px; }
  .wc-rail { width: 56px; }
  .wc-rail-btn, .wc-rail-settings { width: 40px; height: 42px; border-radius: 11px; }
  .wc-self-avatar { width: 36px; height: 36px; }
  .msg-split.wc-msg-split, .wc-contacts-split { grid-template-columns: 210px minmax(0, 1fr); }
  .wc-conv-top { padding-left: 16px; }
  .wc-conv-item { padding: 12px 8px; gap: 8px; }
  .wc-conv-avatar { width: 36px; height: 36px; border-radius: 12px; }
  .wc-conv-name { font-size: 12px; }
  .wc-chat-head.chat-head { padding: 0 14px; }
  .wc-composer.composer { margin: 0 9px 10px; padding: 10px; }
  .wc-msg-area.messages { padding: 18px 12px; }
  .wc-bubble { max-width: 92%; }
  .wc-composer-hint { display: none; }
  .wc-friend-detail { padding: 24px 16px; }
}
@media (max-width: 540px) {
  /* Narrow Web view: retain a readable list or conversation, never squeeze both. */
  .msg-split.wc-msg-split, .wc-contacts-split { grid-template-columns: minmax(0, 1fr); }
  .wc-msg-split .wc-chat-col { display: none; }
  .wc-msg-split.wc-has-chat .wc-conv-col { display: none; }
  .wc-msg-split.wc-has-chat .wc-chat-col { display: flex; }
  .wc-mobile-back { display: inline-flex; align-items: center; }
  #wcBackToContacts { margin: 10px; font-size: 14px; }
  .wc-contacts-detail { display: none; }
  .wc-contacts-split.wc-detail-open .wc-contacts-sidebar { display: none; }
  .wc-contacts-split.wc-detail-open .wc-contacts-detail { display: flex; overflow: auto; }
  .wc-drawer-body { padding: 24px 18px; }
  .wc-remark-controls { gap: 6px; }
  .wc-primary-btn { padding-inline: 10px; min-width: 76px; }
  .wc-brand-divider { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}