/* Scoped to the inbox; the host handles its 64px app rail and full-height panel. */
.zi-inbox {
  --zi-primary: #2563eb;
  --zi-ink: #0f172a;
  --zi-muted: #64748b;
  --zi-border: #e2e8f0;
  --zi-bg: #f6f7fb;
  display: grid;
  grid-template-columns: var(--zi-list-width, 340px) 1px minmax(0, 1fr) 1px var(--zi-detail-width, 290px);
  width: 100%;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
  color: var(--zi-ink);
  background: #fff;
  color-scheme: light;
  font: 13px/1.5 Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-align: left;
  isolation: isolate;
}
.zi-inbox *, .zi-inbox *::before, .zi-inbox *::after { box-sizing: border-box; }
.zi-inbox [hidden] { display: none !important; }
.zi-inbox h1, .zi-inbox h2, .zi-inbox h3, .zi-inbox p { margin: 0; letter-spacing: normal; }
.zi-inbox button, .zi-inbox input, .zi-inbox textarea, .zi-inbox select { font: inherit; color: inherit; }
.zi-inbox button { cursor: pointer; letter-spacing: normal; }
.zi-inbox button:disabled { cursor: default; opacity: .48; }
.zi-inbox a { color: inherit; text-decoration: none; }
.zi-inbox small { color: var(--zi-muted); }
.zi-inbox button:focus-visible, .zi-inbox a:focus-visible, .zi-inbox input:focus-visible, .zi-inbox textarea:focus-visible, .zi-inbox select:focus-visible, .zi-inbox summary:focus-visible, .zi-inbox [role="separator"]:focus-visible { outline: 2px solid #2563eb; outline-offset: 2px; }
.zi-inbox input, .zi-inbox select, .zi-inbox textarea { background: #fff; border: 1px solid var(--zi-border); border-radius: 7px; min-width: 0; max-width: 100%; box-shadow: none; padding: 9px 10px; }
.zi-inbox input::placeholder, .zi-inbox textarea::placeholder { color: #94a3b8; opacity: 1; }
.zi-inbox select { cursor: pointer; }
.zi-inbox label { color: var(--zi-muted); font-size: 11px; margin: 0; display: block; }
.zi-inbox .zi-icon { width: 18px; height: 18px; display: inline-block; flex: 0 0 18px; vertical-align: middle; }
.zi-inbox .zi-button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 34px; padding: 7px 11px; border: 1px solid var(--zi-border); background: #fff; color: #475569; border-radius: 7px; font-size: 12px; font-weight: 550; white-space: nowrap; }
.zi-inbox .zi-button:hover:not(:disabled) { background: #f1f5f9; border-color: #cbd5e1; }
.zi-inbox .zi-primary { background: #2563eb; color: #fff; border-color: #2563eb; }
.zi-inbox .zi-primary:hover:not(:disabled) { background: #1d4ed8; border-color: #1d4ed8; }
.zi-inbox .zi-icon-button { padding: 7px; width: 34px; height: 34px; min-width: 34px; background: transparent; border-color: transparent; }
.zi-inbox .zi-icon-button > span { display: none; }
.zi-inbox .zi-text-link { color: #2563eb; font-size: 12px; display: inline-flex; gap: 4px; align-items: center; }
.zi-inbox .zi-text-link:hover { text-decoration: underline; }
.zi-inbox .zi-muted { color: #64748b; font-size: 12px; line-height: 1.65; }
.zi-inbox .zi-error { color: #b91c1c; }
.zi-inbox .zi-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Conversation collection */
.zi-inbox .zi-list { min-width: 0; min-height: 0; display: flex; flex-direction: column; background: #fff; }
.zi-inbox .zi-list-heading { min-height: 73px; padding: 18px 18px 12px; display: flex; align-items: center; gap: 9px; }
.zi-inbox .zi-list-heading h1 { font-size: 16px; font-weight: 700; letter-spacing: -.4px; line-height: 1.3; flex: 1; }
.zi-inbox .zi-heading-icon { color: #2563eb; display: flex; }
.zi-inbox .zi-list-controls { padding: 0 18px 17px; border-bottom: 1px solid var(--zi-border); }
.zi-inbox .zi-filter-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.zi-inbox .zi-filter-row > .zi-icon-button { margin-left: auto; }
.zi-inbox .zi-select-wrap { position: relative; max-width: 180px; }
.zi-inbox .zi-select-wrap select { appearance: none; border: none; padding: 4px 29px 4px 0; background: transparent; font-size: 14px; font-weight: 650; width: 100%; }
.zi-inbox .zi-select-wrap > .zi-icon { position: absolute; right: 4px; top: 7px; pointer-events: none; color: #64748b; width: 15px; }
.zi-inbox .zi-count { min-width: 20px; text-align: center; font-size: 10px; font-weight: 650; color: #64748b; border-radius: 5px; background: #f1f5f9; padding: 1px 5px; }
.zi-inbox .zi-count:empty { display: none; }
.zi-inbox .zi-search-wrap { display: flex; align-items: center; gap: 8px; border: 1px solid var(--zi-border); border-radius: 8px; background: #f8fafc; padding-left: 10px; color: #94a3b8; }
.zi-inbox .zi-search-wrap:focus-within { border-color: #93b4f9; }
.zi-inbox .zi-search-wrap input { width: 100%; border: 0; background: transparent; outline: 0; padding: 9px 8px 9px 0; font-size: 12px; }
.zi-inbox .zi-filter-selects { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.zi-inbox .zi-filter-selects select { width: 100%; font-size: 11px; color: #64748b; padding: 6px 5px; background: #fff; min-height: 31px; }
.zi-inbox .zi-list-notice { padding: 10px 16px; background: #fff7ed; color: #9a3412; font-size: 11px; border-bottom: 1px solid #fed7aa; }
.zi-inbox .zi-threads { overflow: auto; overscroll-behavior: contain; flex: 1; min-height: 0; scrollbar-width: thin; scrollbar-color: #cbd5e1 transparent; }
.zi-inbox .zi-thread { border: 0; border-bottom: 1px solid #f1f5f9; border-radius: 0; padding: 17px 17px; display: flex; gap: 11px; align-items: flex-start; width: 100%; text-align: left; background: #fff; color: #0f172a; min-height: 104px; position: relative; }
.zi-inbox .zi-thread:hover { background: #f8fafc; }
.zi-inbox .zi-thread.is-active { background: #eff5ff; }
.zi-inbox .zi-thread.is-active::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: #2563eb; }
.zi-inbox .zi-avatar { position: relative; display: inline-grid; place-items: center; width: 40px; height: 40px; flex: 0 0 40px; background: #edf2fa; color: #526581; border: 1px solid #e5ebf5; font-size: 12px; font-weight: 650; border-radius: 50%; overflow: hidden; }
.zi-inbox .zi-avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; background: #edf2fa; }
.zi-inbox .zi-thread-body { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 5px; }
.zi-inbox .zi-thread-top { display: flex; align-items: baseline; gap: 8px; }
.zi-inbox .zi-thread-top strong { font-size: 12px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.zi-inbox .zi-thread-top time { color: #94a3b8; font-size: 10px; white-space: nowrap; }
.zi-inbox .is-unread .zi-thread-top strong { font-weight: 750; }
.zi-inbox .is-unread .zi-thread-top time { color: #2563eb; }
.zi-inbox .zi-thread-preview { display: flex; gap: 8px; align-items: center; font-size: 12px; color: #64748b; }
.zi-inbox .zi-thread-preview > span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.zi-inbox .zi-unread { background: #2563eb; border-radius: 10px; font-size: 10px; color: #fff; min-width: 18px; height: 18px; padding: 1px 5px; text-align: center; }
.zi-inbox .zi-thread-bottom { display: flex; align-items: center; gap: 6px; font-size: 10px; color: #94a3b8; overflow: hidden; }
.zi-inbox .zi-thread-bottom > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.zi-inbox .zi-mini-tag { background: #f1f5f9; color: #64748b; padding: 0 5px; border-radius: 4px; max-width: 100px; }
.zi-inbox .zi-list-empty { padding: 58px 25px; color: #64748b; text-align: center; font-size: 12px; }
.zi-inbox .zi-list-empty > .zi-icon { width: 34px; height: 34px; color: #94a3b8; margin-bottom: 14px; }
.zi-inbox .zi-list-empty h3 { font-weight: 600; font-size: 14px; color: #334155; margin-bottom: 8px; }
.zi-inbox .zi-list-empty p { line-height: 1.7; margin-bottom: 16px; }
.zi-inbox .zi-list-footer { padding: 9px 14px; display: flex; gap: 5px; align-items: center; border-top: 1px solid var(--zi-border); flex-shrink: 0; }
.zi-inbox .zi-page-label { margin-right: auto; font-size: 11px; color: #94a3b8; }

/* Center: no card/container constraining the available canvas. */
.zi-inbox .zi-center { display: flex; flex-direction: column; min-width: 0; min-height: 0; overflow: hidden; background: #f6f7fb; }
.zi-inbox .zi-feedback { padding: 9px 18px; color: #1e40af; background: #eff6ff; border-bottom: 1px solid #dbeafe; font-size: 12px; flex-shrink: 0; }
.zi-inbox .zi-feedback.zi-error { color: #991b1b; background: #fef2f2; border-color: #fecaca; }
.zi-inbox .zi-chat { min-height: 0; min-width: 0; flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.zi-inbox .zi-chat-header { min-height: 73px; padding: 14px 22px; background: #fff; border-bottom: 1px solid var(--zi-border); display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.zi-inbox .zi-chat-identity { min-width: 0; flex: 1; }
.zi-inbox .zi-chat-identity h2 { font-size: 14px; font-weight: 650; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.zi-inbox .zi-chat-identity p { display: flex; align-items: center; gap: 6px; font-size: 10px; color: #64748b; margin-top: 4px; white-space: nowrap; overflow: hidden; }
.zi-inbox .zi-status-dot { width: 6px; height: 6px; background: #2563eb; border-radius: 50%; flex-shrink: 0; }
.zi-inbox .zi-status-dot.is-resolved { background: #94a3b8; }
.zi-inbox .zi-separator-dot { width: 2px; height: 2px; background: #94a3b8; border-radius: 50%; flex-shrink: 0; }
.zi-inbox .zi-conversation-id { color: #94a3b8; margin-left: 3px; }
.zi-inbox .zi-header-actions { display: flex; align-items: center; gap: 6px; }
.zi-inbox .zi-closed-banner { display: flex; align-items: center; gap: 10px; padding: 10px 20px; border-bottom: 1px solid var(--zi-border); color: #64748b; background: #f8fafc; font-size: 11px; flex-shrink: 0; }
.zi-inbox .zi-closed-banner > span { flex: 1; }
.zi-inbox .zi-closed-banner .zi-button { min-height: 28px; padding: 4px 8px; color: #2563eb; font-size: 11px; }
.zi-inbox .zi-history { flex: 1; min-height: 0; overflow: auto; overscroll-behavior: contain; padding: 18px 28px 28px; scrollbar-width: thin; scrollbar-color: #cbd5e1 transparent; overflow-anchor: none; }
.zi-inbox .zi-history-top { text-align: center; min-height: 8px; }
.zi-inbox .zi-history-top .zi-button { color: #64748b; font-size: 10px; background: #fff; border-color: #e8edf4; box-shadow: 0 2px 5px #0f172a03; }
.zi-inbox .zi-day { margin: 23px 0; text-align: center; color: #94a3b8; font-size: 10px; font-weight: 500; }
.zi-inbox .zi-message { display: flex; margin: 12px 0; min-width: 0; }
.zi-inbox .zi-incoming { justify-content: flex-start; padding-right: 12%; }
.zi-inbox .zi-outgoing { justify-content: flex-end; padding-left: 12%; }
.zi-inbox .zi-bubble { min-width: 90px; max-width: min(100%, 600px); padding: 11px 14px 7px; border: 1px solid #e6ebf2; border-radius: 12px 12px 12px 3px; background: #fff; box-shadow: 0 2px 3px #0f172a03; overflow: hidden; }
.zi-inbox .zi-outgoing .zi-bubble { background: #eaf1ff; border-color: #dce7fc; border-radius: 12px 12px 3px 12px; }
.zi-inbox .zi-private .zi-bubble { background: #fffbeb; border-color: #f3e8b9; }
.zi-inbox .zi-send-failed .zi-bubble { border-color: #fca5a5; }
.zi-inbox .zi-message-text { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13px; line-height: 1.75; color: #1e293b; }
.zi-inbox .zi-message-sender { color: #64748b; font-size: 10px; font-weight: 600; margin-bottom: 4px; }
.zi-inbox .zi-message-meta { display: flex; justify-content: flex-end; align-items: center; gap: 5px; color: #94a3b8; font-size: 9px; margin-top: 5px; }
.zi-inbox .zi-message-meta .zi-icon { width: 12px; height: 12px; color: #2563eb; }
.zi-inbox .zi-note-label { display: flex; align-items: center; gap: 5px; color: #967124; font-size: 10px; margin-bottom: 6px; }
.zi-inbox .zi-note-label .zi-icon { width: 13px; height: 13px; }
.zi-inbox .zi-activity { text-align: center; color: #94a3b8; font-size: 10px; padding: 12px 10px; overflow-wrap: anywhere; }
.zi-inbox .zi-activity time { display: block; font-size: 9px; margin-top: 3px; }
.zi-inbox .zi-image-link { display: block; margin-top: 7px; }
.zi-inbox .zi-message-image { display: block; max-width: 100%; width: auto; max-height: 360px; border-radius: 7px; object-fit: contain; }
.zi-inbox .zi-media { display: block; width: min(360px, 100%); max-height: 340px; margin-top: 8px; }
.zi-inbox .zi-file-link { display: flex; align-items: center; gap: 8px; padding: 9px; background: #ffffff80; border: 1px solid #dce4ee; border-radius: 7px; margin-top: 8px; font-size: 11px; color: #2563eb; }
.zi-inbox .zi-file-link > span { overflow-wrap: anywhere; min-width: 0; flex: 1; }
.zi-inbox .zi-attachment-unavailable { color: #94a3b8; font-size: 11px; font-style: italic; }
.zi-inbox .zi-history-empty { padding: 60px 20px; color: #94a3b8; text-align: center; font-size: 12px; }
.zi-inbox .zi-history-empty h3 { margin-bottom: 10px; font-size: 15px; color: #475569; }
.zi-inbox .zi-history-empty .zi-button { margin-top: 16px; }
.zi-inbox .zi-new-messages { display: flex; gap: 6px; align-items: center; position: sticky; bottom: 0; margin: 10px auto 0; border-radius: 20px; background: #2563eb; border: 0; color: #fff; box-shadow: 0 4px 18px #2563eb30; font-size: 11px; padding: 8px 12px; }

/* Composer stays at the bottom; only the history scrolls. */
.zi-inbox .zi-composer-host { flex-shrink: 0; background: #fff; border-top: 1px solid var(--zi-border); }
.zi-inbox .zi-composer { position: relative; padding: 13px 20px 14px; background: #fff; }
.zi-inbox .zi-composer-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding-bottom: 6px; }
.zi-inbox .zi-compose-mode { display: inline-flex; align-items: center; gap: 6px; color: #475569; background: transparent; border: 0; border-radius: 4px; padding: 3px 0; font-size: 11px; font-weight: 650; }
.zi-inbox .zi-compose-mode .zi-icon { width: 14px; height: 14px; flex-basis: 14px; }
.zi-inbox .zi-compose-mode:hover { color: #2563eb; background: transparent; }
.zi-inbox .zi-compose-hint { color: #94a3b8; font-size: 9px; }
.zi-inbox .zi-compose-text { display: block; width: 100%; min-height: 76px; max-height: 180px; height: 90px; border: 0; padding: 8px 0; background: transparent; color: #1e293b; font-size: 13px; line-height: 1.65; resize: vertical; border-radius: 3px; }
.zi-inbox .zi-compose-text:focus-visible { outline-offset: 3px; }
.zi-inbox .zi-compose-text:disabled { opacity: .6; }
.zi-inbox .zi-composer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-top: 6px; }
.zi-inbox .zi-compose-tools { display: flex; align-items: center; gap: 3px; }
.zi-inbox .zi-compose-tools .zi-button { color: #64748b; }
.zi-inbox .zi-send { min-width: 98px; }
.zi-inbox .zi-note-mode { background: #fffdf5; }
.zi-inbox .zi-note-mode .zi-compose-mode { color: #967124; }
.zi-inbox .zi-file-previews { display: flex; flex-wrap: wrap; gap: 5px; max-height: 84px; overflow: auto; }
.zi-inbox .zi-file-preview { display: flex; align-items: center; gap: 5px; padding: 5px 7px; border: 1px solid var(--zi-border); background: #f8fafc; border-radius: 5px; max-width: 100%; color: #64748b; font-size: 10px; }
.zi-inbox .zi-file-preview > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.zi-inbox .zi-file-preview small { font-size: 9px; }
.zi-inbox .zi-file-preview button { display: grid; place-items: center; background: transparent; border: 0; color: #64748b; padding: 0; }
.zi-inbox .zi-file-preview .zi-icon { width: 13px; height: 13px; flex-basis: 13px; }
.zi-inbox .zi-canned { position: absolute; bottom: calc(100% - 10px); left: 18px; width: min(390px, calc(100% - 36px)); border: 1px solid #dce4ef; border-radius: 10px; background: #fff; box-shadow: 0 10px 40px #0f172a20; z-index: 6; padding: 10px; }
.zi-inbox .zi-canned-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 7px; padding-left: 5px; font-size: 12px; }
.zi-inbox .zi-canned-search { width: 100%; font-size: 12px; }
.zi-inbox .zi-canned-results { max-height: min(300px, 35dvh); overflow: auto; margin-top: 8px; }
.zi-inbox .zi-canned-results > button { display: flex; flex-direction: column; gap: 4px; width: 100%; border: 0; border-radius: 6px; padding: 10px; text-align: left; background: transparent; }
.zi-inbox .zi-canned-results > button:hover { background: #eff6ff; }
.zi-inbox .zi-canned-results strong { color: #2563eb; font-size: 11px; }
.zi-inbox .zi-canned-results span { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; color: #64748b; font-size: 11px; white-space: pre-wrap; }
.zi-inbox .zi-canned-results > p { padding: 12px 5px; color: #64748b; font-size: 12px; }
.zi-inbox .zi-canned-results a { color: #2563eb; }

/* Contact and context */
.zi-inbox .zi-details { min-width: 0; min-height: 0; overflow: auto; overscroll-behavior: contain; background: #fff; scrollbar-width: thin; scrollbar-color: #cbd5e1 transparent; }
.zi-inbox .zi-details-title { min-height: 73px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 15px 18px; border-bottom: 1px solid var(--zi-border); }
.zi-inbox .zi-details-title strong { font-size: 13px; font-weight: 650; }
.zi-inbox .zi-person-summary { display: flex; flex-direction: column; align-items: center; padding: 24px 18px; border-bottom: 1px solid var(--zi-border); text-align: center; }
.zi-inbox .zi-avatar-large { width: 64px; height: 64px; flex-basis: 64px; font-size: 20px; margin-bottom: 12px; }
.zi-inbox .zi-person-summary h2 { font-size: 15px; font-weight: 650; overflow-wrap: anywhere; }
.zi-inbox .zi-person-summary p { margin-top: 5px; font-size: 12px; color: #94a3b8; overflow-wrap: anywhere; }
.zi-inbox .zi-person-summary .zi-text-link { margin-top: 13px; font-size: 10px; }
.zi-inbox .zi-person-summary .zi-icon { width: 12px; height: 12px; flex-basis: 12px; }
.zi-inbox .zi-detail-section { border-bottom: 1px solid var(--zi-border); }
.zi-inbox .zi-detail-section summary { display: flex; align-items: center; gap: 9px; padding: 15px 18px; cursor: pointer; list-style: none; color: #475569; font-size: 12px; font-weight: 600; }
.zi-inbox .zi-detail-section summary::-webkit-details-marker { display: none; }
.zi-inbox .zi-detail-section summary > span { flex: 1; }
.zi-inbox .zi-detail-section summary > .zi-icon { width: 16px; height: 16px; flex-basis: 16px; color: #94a3b8; }
.zi-inbox .zi-detail-section[open] summary > .zi-icon:last-child { transform: rotate(180deg); }
.zi-inbox .zi-detail-section summary:hover { background: #f8fafc; }
.zi-inbox .zi-detail-body, .zi-inbox .zi-contact-form { padding: 0 18px 18px; }
.zi-inbox .zi-contact-form label + label, .zi-inbox .zi-detail-body label + label { margin-top: 12px; }
.zi-inbox .zi-contact-form input, .zi-inbox .zi-detail-body select { width: 100%; margin-top: 5px; font-size: 12px; background: #fff; min-height: 35px; }
.zi-inbox .zi-contact-form .zi-save-contact { width: 100%; margin-top: 14px; font-size: 11px; background: #f8fafc; }
.zi-inbox .zi-detail-line { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; font-size: 11px; color: #94a3b8; margin-top: 14px; }
.zi-inbox .zi-detail-line strong { color: #64748b; font-weight: 500; text-align: right; overflow-wrap: anywhere; }
.zi-inbox .zi-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.zi-inbox .zi-tag { display: inline-flex; align-items: center; gap: 5px; color: #47638c; background: #eff4fc; border: 1px solid #dfe8f5; border-radius: 5px; font-size: 10px; padding: 3px 6px; overflow-wrap: anywhere; }
.zi-inbox .zi-tag button { display: grid; place-items: center; padding: 0; background: transparent; color: #94a3b8; border: 0; border-radius: 3px; }
.zi-inbox .zi-tag .zi-icon { width: 12px; height: 12px; flex-basis: 12px; }
.zi-inbox .zi-detail-body > .zi-button { font-size: 10px; margin-top: 12px; }
.zi-inbox .zi-detail-body .zi-text-link { margin-top: 8px; font-size: 11px; }
.zi-inbox .zi-context-record { display: flex; flex-direction: column; gap: 4px; border: 1px solid #e2e8f0; padding: 10px; border-radius: 6px; margin-bottom: 8px; }
.zi-inbox .zi-context-record strong { color: #475569; font-size: 12px; font-weight: 550; overflow-wrap: anywhere; }
.zi-inbox .zi-context-record span { color: #94a3b8; font-size: 10px; }
.zi-inbox .zi-attributes { margin: 0; padding: 0 18px 18px; font-size: 11px; }
.zi-inbox .zi-attributes dt { color: #94a3b8; margin-top: 9px; }
.zi-inbox .zi-attributes dd { margin: 3px 0; color: #475569; overflow-wrap: anywhere; }
.zi-inbox .zi-details-empty { padding: 80px 30px; color: #94a3b8; font-size: 12px; text-align: center; }
.zi-inbox .zi-details-empty > .zi-icon { width: 30px; height: 30px; margin-bottom: 18px; color: #cbd5e1; }

/* Spacious, honest empty state */
.zi-inbox .zi-empty-toolbar { height: 73px; padding: 18px; flex-shrink: 0; }
.zi-inbox .zi-empty-main { flex: 1; min-height: 0; padding: 30px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.zi-inbox .zi-empty-art { width: 118px; height: 118px; display: grid; place-items: center; background: #eaf1ff; border: 1px solid #dce8ff; border-radius: 36px; color: #83a7ed; position: relative; margin-bottom: 32px; }
.zi-inbox .zi-empty-art > .zi-icon { width: 53px; height: 53px; stroke-width: 1.2; }
.zi-inbox .zi-art-card { position: absolute; display: grid; place-items: center; right: -12px; bottom: 6px; width: 42px; height: 42px; background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; color: #2563eb; transform: rotate(-9deg); box-shadow: 0 6px 18px #2563eb0d; }
.zi-inbox .zi-empty-main h2 { font-size: 21px; letter-spacing: -.5px; color: #334155; font-weight: 600; }
.zi-inbox .zi-empty-main p { max-width: 360px; margin: 14px 0 25px; color: #94a3b8; font-size: 12px; line-height: 1.8; }
.zi-inbox .zi-empty-main > .zi-button { padding: 10px 16px; font-size: 12px; }
.zi-inbox .zi-empty-main > small { display: block; max-width: 320px; margin-top: 19px; color: #94a3b8; font-size: 10px; }

/* Actual pointer/keyboard resizers; collapse controls keep the canvas usable. */
.zi-inbox .zi-resizer { position: relative; width: 1px; background: var(--zi-border); cursor: col-resize; touch-action: none; z-index: 4; }
.zi-inbox .zi-resizer::after { content: ""; position: absolute; inset: 0 -4px; }
.zi-inbox .zi-resizer:hover, .zi-inbox .zi-resizer:focus-visible { background: #2563eb; }
.zi-inbox.zi-resizing { cursor: col-resize; user-select: none; }
.zi-inbox.zi-resizing .zi-resizer { background: #93b4f9; }
.zi-inbox.zi-details-hidden { grid-template-columns: var(--zi-list-width, 340px) 1px minmax(0, 1fr); }
.zi-inbox.zi-details-hidden > .zi-details, .zi-inbox.zi-details-hidden > .zi-detail-resizer { display: none; }
.zi-inbox .zi-show-list, .zi-inbox .zi-mobile-back { display: none; }
.zi-inbox.zi-list-collapsed { grid-template-columns: minmax(0, 1fr) 1px var(--zi-detail-width, 290px); }
.zi-inbox.zi-list-collapsed > .zi-list, .zi-inbox.zi-list-collapsed > .zi-list-resizer { display: none; }
.zi-inbox.zi-list-collapsed .zi-show-list { display: inline-flex; }
.zi-inbox.zi-list-collapsed.zi-details-hidden { grid-template-columns: minmax(0, 1fr); }

@media (max-width: 1250px) {
  .zi-inbox { grid-template-columns: min(30%, var(--zi-list-width, 340px)) 1px minmax(0, 1fr); position: relative; }
  .zi-inbox > .zi-detail-resizer { display: none; }
  .zi-inbox > .zi-details { position: absolute; right: 0; top: 0; bottom: 0; width: var(--zi-detail-width, 290px); max-width: 85%; z-index: 8; border-left: 1px solid var(--zi-border); box-shadow: -15px 0 45px #0f172a14; }
  .zi-inbox.zi-details-hidden { grid-template-columns: min(30%, var(--zi-list-width, 340px)) 1px minmax(0, 1fr); }
  .zi-inbox.zi-list-collapsed { grid-template-columns: minmax(0, 1fr); }
  .zi-inbox .zi-chat-header { padding: 14px 16px; }
  .zi-inbox .zi-history { padding: 16px 22px 24px; }
}
@media (min-width: 1251px) and (max-width: 1450px) {
  .zi-inbox .zi-header-actions .zi-take > span { display: none; }
  .zi-inbox .zi-header-actions .zi-take { padding: 7px; }
  .zi-inbox .zi-chat-header { padding: 14px 16px; gap: 9px; }
  .zi-inbox .zi-history { padding-left: 22px; padding-right: 22px; }
  .zi-inbox .zi-compose-hint { display: none; }
}
@media (max-width: 760px) {
  .zi-inbox, .zi-inbox.zi-details-hidden, .zi-inbox.zi-list-collapsed { grid-template-columns: minmax(0, 1fr); }
  .zi-inbox > .zi-list { display: flex; }
  .zi-inbox > .zi-list-resizer, .zi-inbox > .zi-detail-resizer { display: none; }
  .zi-inbox > .zi-center { display: none; }
  .zi-inbox.zi-has-conversation > .zi-list { display: none; }
  .zi-inbox.zi-has-conversation > .zi-center { display: flex; }
  .zi-inbox.zi-list-collapsed:not(.zi-has-conversation) > .zi-center { display: flex; }
  .zi-inbox.zi-list-collapsed:not(.zi-has-conversation) > .zi-list { display: none; }
  .zi-inbox:not(.zi-has-conversation) > .zi-details { display: none; }
  .zi-inbox .zi-mobile-back { display: inline-flex; }
  .zi-inbox .zi-list-heading { padding-top: 15px; }
  .zi-inbox .zi-chat-header { padding: 10px; gap: 6px; min-height: 64px; }
  .zi-inbox .zi-chat-header > .zi-avatar { width: 32px; height: 32px; flex-basis: 32px; font-size: 10px; }
  .zi-inbox .zi-chat-identity h2 { font-size: 12px; }
  .zi-inbox .zi-chat-identity p { font-size: 9px; }
  .zi-inbox .zi-conversation-id, .zi-inbox .zi-take, .zi-inbox .zi-compose-hint { display: none; }
  .zi-inbox .zi-header-actions { gap: 2px; }
  .zi-inbox .zi-header-actions > .zi-button { padding: 6px; font-size: 10px; }
  .zi-inbox .zi-header-actions > .zi-button:not(.zi-icon-button) .zi-icon { display: none; }
  .zi-inbox .zi-closed-banner { padding: 9px 12px; gap: 7px; font-size: 10px; }
  .zi-inbox .zi-closed-banner > .zi-icon { display: none; }
  .zi-inbox .zi-closed-banner .zi-button .zi-icon { display: none; }
  .zi-inbox .zi-history { padding: 12px 13px 20px; }
  .zi-inbox .zi-incoming { padding-right: 7%; }
  .zi-inbox .zi-outgoing { padding-left: 7%; }
  .zi-inbox .zi-bubble { padding: 9px 11px 6px; }
  .zi-inbox .zi-message-text { font-size: 12px; }
  .zi-inbox .zi-composer { padding: 10px 12px max(12px, env(safe-area-inset-bottom)); }
  .zi-inbox .zi-compose-text { min-height: 66px; height: 76px; font-size: 16px; }
  .zi-inbox .zi-send { min-width: 85px; }
}
@media (max-height: 650px) and (min-width: 761px) {
  .zi-inbox .zi-compose-text { min-height: 55px; height: 60px; }
  .zi-inbox .zi-composer { padding-top: 8px; padding-bottom: 9px; }
  .zi-inbox .zi-person-summary { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .zi-inbox * { scroll-behavior: auto !important; }
}