/* Artifis Mail — Gmail-inspired, our own polish.
   Single-file CSS, no build step. */

:root {
    --bg:           #f6f8fc;
    --bg-elev:      #ffffff;
    --bg-hover:     #f1f3f8;
    --bg-row-hover: #f4f6fa;
    --bg-row-unread:#ffffff;
    --border:       #e6e8ee;
    --border-strong:#dfe2e8;

    --text:         #1f2328;
    --text-soft:    #4a5566;
    --text-muted:   #7d8696;
    --text-link:    #2a5bd7;

    --accent:       #2a5bd7;
    --accent-hover: #244fc1;
    --accent-soft:  #e8efff;
    --danger:       #d93025;
    --warn:         #f9ab00;
    --star:         #f5b400;

    --shadow-sm:    0 1px 2px rgba(20,28,52,.06);
    --shadow-md:    0 4px 16px rgba(20,28,52,.08);
    --shadow-lg:    0 12px 32px rgba(20,28,52,.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-pill: 999px;

    --sidebar-w: 256px;
    --topbar-h: 60px;

    --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--text-muted); }
.hidden { display: none !important; }
button { font-family: inherit; }

/* ============= TOPBAR ============= */
.topbar {
    position: sticky; top: 0; z-index: 30;
    height: var(--topbar-h);
    display: flex; align-items: center; gap: 14px;
    padding: 0 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}
.brand {
    display: flex; align-items: center; gap: 10px;
    color: var(--text);
    font-weight: 600;
    min-width: 180px;
}
.brand:hover { text-decoration: none; }
.brand-mark {
    width: 36px; height: 36px;
    display: grid; place-items: center;
    background: var(--accent-soft); color: var(--accent);
    border-radius: var(--radius-md);
}
.brand-name { font-size: 18px; letter-spacing: -.01em; }

.searchbar {
    flex: 1; max-width: 720px;
    display: flex; align-items: center; gap: 10px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 8px 18px;
    transition: box-shadow .12s, border-color .12s;
}
.searchbar:focus-within {
    background: var(--bg-elev);
    border-color: transparent;
    box-shadow: var(--shadow-md);
}
.searchbar input {
    border: 0; outline: 0; background: transparent;
    flex: 1; font-size: 15px; color: var(--text);
}
.searchbar-btn {
    border: 0; background: transparent; cursor: pointer;
    color: var(--text-muted); padding: 0;
    display: grid; place-items: center;
}

.topbar-right {
    display: flex; align-items: center; gap: 6px;
    margin-left: auto;
}

/* ============= BUTTONS ============= */
.iconbtn {
    width: 38px; height: 38px;
    display: inline-grid; place-items: center;
    background: transparent; border: 0; border-radius: 50%;
    color: var(--text-soft); cursor: pointer;
    transition: background .12s, color .12s;
}
.iconbtn:hover { background: var(--bg-hover); color: var(--text); }
.iconbtn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    background: transparent;
    font-weight: 500; font-size: 14px;
    cursor: pointer;
    transition: background .12s, border-color .12s, box-shadow .12s, color .12s;
}
.btn-primary {
    background: var(--accent); color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-outline {
    border-color: var(--border-strong); color: var(--text);
}
.btn-outline:hover { background: var(--bg-hover); }
.link-btn {
    background: transparent; border: 0; color: var(--text-muted);
    cursor: pointer; font-size: 13px;
}
.link-btn:hover { color: var(--text); text-decoration: underline; }

/* ============= ACCOUNT SWITCHER ============= */
.account-switcher { position: relative; }
.acc-pill {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--bg-elev); border: 1px solid var(--border);
    border-radius: var(--radius-pill); padding: 4px 12px 4px 4px;
    cursor: pointer; color: var(--text);
    max-width: 260px;
}
.acc-pill:hover { background: var(--bg-hover); }
.acc-pill-text {
    font-size: 13px; white-space: nowrap;
    overflow: hidden; text-overflow: ellipsis;
    max-width: 180px;
}
.acc-menu {
    position: absolute; right: 0; top: calc(100% + 8px);
    width: 320px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 50;
}
.acc-menu-head {
    padding: 18px 16px; text-align: center;
    border-bottom: 1px solid var(--border);
}
.acc-menu-head .avatar { margin: 0 auto 10px; }
.acc-menu-name { font-weight: 600; font-size: 15px; }
.acc-menu-mail { font-size: 13px; }
.acc-menu-list { padding: 8px 0; }
.acc-menu-label {
    padding: 6px 16px; font-size: 11px;
    text-transform: uppercase; letter-spacing: .04em;
}
.acc-menu-item {
    display: flex; align-items: center; gap: 12px;
    width: 100%; padding: 10px 16px;
    border: 0; background: transparent; cursor: pointer;
    text-align: left; color: var(--text);
}
.acc-menu-item:hover { background: var(--bg-hover); }
.acc-menu-item.active { background: var(--accent-soft); }
.acc-menu-item-text { display: flex; flex-direction: column; min-width: 0; }
.acc-menu-item-name { font-size: 14px; }
.acc-menu-item-mail { font-size: 12px; }
.acc-menu-item-foot {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px; border-top: 1px solid var(--border);
    color: var(--text-soft); font-size: 13px;
}
.acc-menu-item-foot:hover { background: var(--bg-hover); text-decoration: none; }

/* ============= AVATAR ============= */
.avatar {
    width: 30px; height: 30px;
    display: inline-grid; place-items: center;
    border-radius: 50%;
    color: #fff; font-size: 12px; font-weight: 600;
    flex-shrink: 0;
    overflow: hidden;
}
.avatar-md { width: 38px; height: 38px; font-size: 14px; }
.avatar-lg { width: 60px; height: 60px; font-size: 22px; }
.avatar-img { background: transparent; }
.avatar-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
}

/* ============= SHELL / SIDEBAR ============= */
.shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    height: calc(100vh - var(--topbar-h));
    overflow: hidden;
}
body.sidebar-collapsed .shell { grid-template-columns: 72px 1fr; }
body.sidebar-collapsed .sidenav-text,
body.sidebar-collapsed .sidenav-count,
body.sidebar-collapsed .compose-btn span:not(.compose-icon) { display: none; }
body.sidebar-collapsed .compose-btn {
    width: 56px; padding: 0; justify-content: center;
}
body.sidebar-collapsed .sidenav-item {
    justify-content: center; padding: 12px;
    border-radius: 50%; width: 48px;
}

.sidebar {
    background: var(--bg);
    padding: 8px 12px 12px;
    overflow-y: auto;
    border-right: 1px solid transparent;
}
.compose-btn {
    display: inline-flex; align-items: center; gap: 12px;
    padding: 14px 22px 14px 18px;
    background: var(--bg-elev);
    color: var(--text);
    border: 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    font-weight: 600; font-size: 14px;
    cursor: pointer;
    transition: box-shadow .12s, background .12s;
    margin: 4px 0 12px;
}
.compose-btn:hover { background: var(--bg-hover); box-shadow: var(--shadow-lg); }

.sidenav { display: flex; flex-direction: column; gap: 2px; }
.sidenav-item {
    display: flex; align-items: center; gap: 14px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    color: var(--text-soft); font-size: 14px; font-weight: 500;
    cursor: pointer;
}
.sidenav-item:hover { background: var(--bg-row-hover); text-decoration: none; color: var(--text); }
.sidenav-item.active {
    background: var(--accent-soft); color: var(--accent);
    font-weight: 700;
}
.sidenav-text { flex: 1; }
.sidenav-count {
    font-size: 12px; font-weight: 600;
    color: var(--text-soft);
}
.sidenav-item.active .sidenav-count { color: var(--accent); }

/* ============= MAIN PANE ============= */
.main {
    background: var(--bg-elev);
    border-top-left-radius: var(--radius-lg);
    overflow: hidden;
    display: flex; flex-direction: column;
    margin: 4px 8px 8px 0;
    box-shadow: var(--shadow-sm);
}

/* ============= LIST PANE ============= */
.list-pane { display: flex; flex-direction: column; height: 100%; }
.list-toolbar {
    display: flex; align-items: center; gap: 4px;
    padding: 6px 12px; border-bottom: 1px solid var(--border);
    background: var(--bg-elev);
    flex-shrink: 0;
}
.list-toolbar-tabs { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.tab {
    display: inline-flex; align-items: center;
    padding: 6px 14px; border-radius: var(--radius-pill);
    color: var(--text-muted); font-size: 13px; font-weight: 500;
}
.tab:hover { background: var(--bg-hover); text-decoration: none; color: var(--text); }
.tab.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.list-title {
    margin-left: auto; font-size: 13px; font-weight: 500;
    color: var(--text-muted);
}

.thread-list {
    list-style: none; margin: 0; padding: 0;
    overflow-y: auto;
    flex: 1;
}
.thread-row {
    display: grid;
    grid-template-columns: 44px 36px 1fr;
    align-items: center;
    border-bottom: 1px solid #f0f2f6;
    padding: 0 12px;
    background: #fafbfd;
    cursor: pointer;
    transition: background .1s, box-shadow .1s;
    height: 44px;
}
.thread-row:hover { background: #fff; box-shadow: var(--shadow-sm); z-index: 1; position: relative; }
.thread-row.unread {
    background: var(--bg-row-unread);
}
.thread-row.unread .thread-from,
.thread-row.unread .thread-subj { font-weight: 700; color: var(--text); }
.thread-from, .thread-subj { color: var(--text-soft); }

.thread-row-link {
    display: grid;
    grid-template-columns: minmax(140px, 200px) 1fr auto;
    align-items: center;
    gap: 16px;
    color: inherit; min-width: 0;
    text-decoration: none;
    height: 100%;
}
.thread-row-link:hover { text-decoration: none; }
.thread-from {
    font-size: 14px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.thread-count {
    color: var(--text-muted); font-weight: 500; font-size: 12px;
    margin-left: 4px;
}
.thread-subj-snippet {
    min-width: 0;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    font-size: 14px;
}
.thread-subj { color: var(--text); }
.thread-snippet { color: var(--text-muted); }
.thread-meta {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--text-muted); font-size: 12px;
    margin-left: 12px;
    white-space: nowrap;
}
.meta-ico { display: inline-grid; place-items: center; color: var(--text-muted); }
.thread-row.unread .thread-time { color: var(--text); font-weight: 600; }

.check-wrap {
    width: 36px; height: 36px;
    display: inline-grid; place-items: center;
    cursor: pointer;
    position: relative;
}
.check-wrap input { opacity: 0; position: absolute; inset: 0; cursor: pointer; }
.check-wrap span {
    width: 18px; height: 18px;
    border: 2px solid #b5bcc8; border-radius: 4px;
    display: inline-block;
    transition: background .12s, border-color .12s;
}
.check-wrap input:checked + span {
    background: var(--accent);
    border-color: var(--accent);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
    background-repeat: no-repeat; background-position: center;
}

.star-btn {
    width: 32px; height: 32px;
    display: inline-grid; place-items: center;
    border: 0; background: transparent;
    color: #cdd2dc; cursor: pointer; border-radius: 50%;
}
.star-btn:hover { background: var(--bg-hover); color: var(--star); }
.star-btn.on { color: var(--star); }
.star-btn.on svg { fill: var(--star); }

/* ============= THREAD PANE ============= */
.thread-pane {
    display: flex; flex-direction: column;
    height: 100%; overflow-y: auto;
}
.thread-toolbar {
    display: flex; align-items: center; gap: 4px;
    padding: 6px 12px; border-bottom: 1px solid var(--border);
    position: sticky; top: 0; background: var(--bg-elev); z-index: 5;
    flex-shrink: 0;
}
.divider { width: 1px; height: 24px; background: var(--border); margin: 0 6px; }

.thread-head {
    padding: 24px 32px 16px; max-width: 880px; width: 100%;
}
.thread-subject {
    margin: 0 0 8px;
    font-size: 22px; font-weight: 500;
    color: var(--text);
}
.thread-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
    background: var(--bg); color: var(--text-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 2px 10px; font-size: 12px;
}

.messages {
    list-style: none; margin: 0;
    padding: 8px 32px 24px;
    max-width: 880px; width: 100%;
}
.message {
    margin-bottom: 16px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.message-head {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: start;
    gap: 12px;
    padding: 14px 16px;
}
.message-from { min-width: 0; }
.message-name { font-size: 14px; }
.message-to { font-size: 12px; margin-top: 2px; }
.message-meta {
    display: inline-flex; align-items: center; gap: 4px;
    color: var(--text-muted); font-size: 12px;
    white-space: nowrap;
}
.message-time { padding: 0 6px; }
.message-body {
    padding: 0 16px 16px;
    color: var(--text);
    overflow-x: auto;
    word-wrap: break-word;
}
.message-body img { max-width: 100%; height: auto; }
.message-body table { max-width: 100%; }
.message-body a { color: var(--text-link); }
.message-body blockquote {
    margin: 8px 0; padding: 0 12px;
    border-left: 3px solid var(--border-strong);
    color: var(--text-muted);
}
.message.collapsed .message-body,
.message.collapsed .message-attachments { display: none; }

.message-attachments {
    display: flex; flex-wrap: wrap; gap: 8px;
    padding: 0 16px 16px;
}
.attach-card {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg);
    color: var(--text);
    font-size: 13px;
}
.attach-card:hover { background: var(--bg-hover); text-decoration: none; }
.attach-icon { color: var(--text-muted); }
.attach-size { font-size: 12px; }

.thread-actions {
    display: flex; gap: 10px;
    padding: 0 32px 32px;
    max-width: 880px; width: 100%;
}

/* ============= COMPOSE WINDOW ============= */
.compose-window {
    position: fixed;
    right: 24px; bottom: 0;
    width: 540px; max-width: calc(100vw - 32px);
    height: 580px; max-height: calc(100vh - 80px);
    background: var(--bg-elev);
    border-radius: 12px 12px 0 0;
    box-shadow: 0 -2px 16px rgba(20,28,52,.18), 0 0 0 1px var(--border);
    display: flex; flex-direction: column;
    z-index: 100;
}
.compose-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 16px;
    background: #2c333f;
    color: #fff;
    border-radius: 12px 12px 0 0;
}
.compose-head .iconbtn { color: #fff; }
.compose-head .iconbtn:hover { background: rgba(255,255,255,.12); color: #fff; }
.compose-title { font-size: 13px; font-weight: 600; letter-spacing: .01em; }
.compose-form { display: flex; flex-direction: column; flex: 1; overflow: hidden; }
.compose-row {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.compose-row label {
    color: var(--text-muted); font-size: 13px; width: 50px;
}
.compose-row input[type="text"] {
    flex: 1; border: 0; outline: 0; background: transparent;
    font-size: 14px; color: var(--text);
}
.compose-toggles { justify-content: flex-end; gap: 12px; }

.chips-input { flex: 1; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; position: relative; }
.chips { display: contents; }
.chip-input {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--bg); border: 1px solid var(--border-strong);
    border-radius: var(--radius-pill);
    padding: 2px 8px 2px 4px; font-size: 12px;
    color: var(--text);
}
.chip-input .chip-avatar { width: 20px; height: 20px; font-size: 10px; }
.chip-input button {
    background: transparent; border: 0; cursor: pointer; color: var(--text-muted);
    width: 16px; height: 16px;
    display: grid; place-items: center; padding: 0;
}
.chip-input button:hover { color: var(--danger); }

.autocomplete {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    z-index: 10;
    max-height: 280px; overflow-y: auto;
    margin-top: 6px;
}
.auto-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 12px; cursor: pointer;
}
.auto-item:hover, .auto-item.active { background: var(--bg-hover); }
.auto-item-name { font-size: 13px; }
.auto-item-mail { font-size: 12px; color: var(--text-muted); }

.compose-body {
    flex: 1; overflow-y: auto;
    padding: 16px;
}
.rte {
    min-height: 100%;
    outline: 0;
    font-size: 14px; line-height: 1.55;
    color: var(--text);
}
.rte[contenteditable=""]:empty::before,
.rte[contenteditable="true"]:empty::before {
    content: attr(placeholder);
    color: var(--text-muted);
}

.compose-attach {
    padding: 0 16px;
    display: flex; flex-wrap: wrap; gap: 6px;
}
.attach-pending {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 4px 10px; font-size: 12px;
}
.attach-pending button {
    border: 0; background: transparent; color: var(--text-muted);
    cursor: pointer; padding: 0;
    display: grid; place-items: center;
}
.attach-pending button:hover { color: var(--danger); }

.compose-foot {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 16px;
    border-top: 1px solid var(--border);
}
.compose-foot .grow { flex: 1; }

/* ============= EMPTY STATES ============= */
.empty-state {
    display: flex; flex-direction: column; align-items: center;
    justify-content: center; gap: 12px;
    padding: 80px 24px; color: var(--text-muted);
    text-align: center;
}
.empty-art {
    width: 96px; height: 96px;
    display: grid; place-items: center;
    background: var(--accent-soft); color: var(--accent);
    border-radius: 50%;
    margin-bottom: 8px;
}
.empty-state h2 { margin: 0; font-size: 20px; font-weight: 600; color: var(--text); }

/* ============= AUTH ============= */
body.auth {
    background: linear-gradient(180deg, #f6f8fc 0%, #e9ecf5 100%);
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 24px;
}
.auth-card {
    width: 100%; max-width: 420px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 36px 36px 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}
.auth-logo {
    width: 56px; height: 56px;
    margin: 0 auto 16px;
    display: grid; place-items: center;
    background: var(--accent-soft); color: var(--accent);
    border-radius: 16px;
}
.auth-card h1 {
    margin: 0; font-size: 22px; font-weight: 600;
}
.auth-card p { margin: 6px 0 24px; }
.auth-form { display: flex; flex-direction: column; gap: 14px; text-align: left; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field span { font-size: 13px; color: var(--text-soft); }
.field input {
    padding: 10px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    font: inherit; color: var(--text);
    transition: border-color .12s, box-shadow .12s;
}
.field input:focus {
    outline: 0; border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(42,91,215,.15);
}
.auth-form .btn { align-self: stretch; justify-content: center; padding: 10px 16px; }
.auth-foot { margin-top: 16px; font-size: 12px; }
.alert {
    padding: 10px 12px; margin-bottom: 14px;
    background: #fdecea; color: #b71c1c;
    border: 1px solid #f6c7c3;
    border-radius: var(--radius-sm);
    font-size: 13px;
}

/* ============= SETTINGS PANE ============= */
.settings-pane {
    height: 100%; overflow-y: auto;
    background: var(--bg-elev);
}
.settings-head {
    display: flex; align-items: center; gap: 14px;
    padding: 18px 28px;
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; background: var(--bg-elev); z-index: 4;
}
.settings-head h1 { margin: 0; font-size: 22px; font-weight: 600; }
.settings-body {
    max-width: 760px;
    padding: 24px 28px 80px;
}
.settings-section {
    margin-bottom: 40px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
}
.settings-section:last-child { border-bottom: 0; }
.settings-section h2 {
    margin: 0 0 4px; font-size: 17px; font-weight: 600;
}
.settings-section > p { margin: 0 0 18px; }
.settings-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 16px;
    align-items: start;
    margin-bottom: 16px;
}
.settings-row-full { grid-template-columns: 1fr; }
.settings-label { font-size: 14px; padding-top: 8px; color: var(--text-soft); }
.settings-control input[type=text],
.settings-control input[type=password] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    font: inherit; color: var(--text);
    background: var(--bg-elev);
    transition: border-color .12s, box-shadow .12s;
}
.settings-control input[type=text]:focus,
.settings-control input[type=password]:focus {
    outline: 0; border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(42,91,215,.15);
}
.settings-actions {
    display: flex; gap: 10px;
    margin-top: 10px;
}
.rte-signature {
    min-height: 140px;
    padding: 12px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--bg-elev);
    outline: 0;
    font: inherit; color: var(--text);
}
.rte-signature:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(42,91,215,.15); }
.rte-signature[contenteditable=""]:empty::before,
.rte-signature[contenteditable="true"]:empty::before {
    content: attr(placeholder);
    color: var(--text-muted);
}
.avatar-edit {
    display: flex; align-items: center; gap: 18px;
}
.avatar-actions { display: flex; flex-direction: column; gap: 4px; align-items: flex-start; }
.avatar-actions .btn { padding: 6px 14px; }
.settings-list {
    list-style: none; padding: 0; margin: 0;
    display: flex; flex-direction: column; gap: 12px;
}
.settings-list li {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

/* ============= TOAST ============= */
.toast-host {
    position: fixed; left: 24px; bottom: 24px; z-index: 200;
    display: flex; flex-direction: column; gap: 8px;
}
.toast {
    background: #2c333f; color: #fff;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    box-shadow: var(--shadow-lg);
    animation: toast-in .18s ease-out;
}
.toast-error { background: #b71c1c; }
@keyframes toast-in {
    from { transform: translateY(8px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ============= RESPONSIVE ============= */
@media (max-width: 900px) {
    :root { --sidebar-w: 0; }
    .sidebar { display: none; }
    .thread-row-link { grid-template-columns: 1fr auto; }
    .thread-from { display: none; }
}