:root {
    color-scheme: light;
    --background: #f3f5f4;
    --surface: #ffffff;
    --text: #1c3029;
    --muted: #56665f;
    --accent: #176646;
    --accent-hover: #104c33;
    --border: #ced8d2;
    --danger: #a22626;
    font: 16px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--background);
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--accent); text-underline-offset: .2em; }
button, input, select { font: inherit; }
button, input, select { min-height: 44px; border-radius: 7px; }
button { border: 1px solid var(--accent); padding: .6rem 1rem; background: var(--accent); color: #fff; cursor: pointer; font-weight: 600; }
button:hover { background: var(--accent-hover); }
button:disabled { opacity: .65; cursor: wait; }
button.secondary { background: var(--surface); color: var(--accent); }
button.secondary:hover { background: #eaf2ed; }
button.danger { background: var(--surface); color: var(--danger); border-color: var(--danger); }
input, select { display: block; width: 100%; padding: .55rem .7rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); margin-top: .35rem; }
input::placeholder { color: var(--muted); }
label { display: block; font-weight: 600; }
:focus-visible { outline: 3px solid #c07819; outline-offset: 3px; }
h1, h2, p { margin-top: 0; }
h1 { font-size: clamp(1.65rem, 3vw, 2rem); line-height: 1.25; margin-bottom: 1.5rem; }
h2 { font-size: 1.2rem; line-height: 1.4; }
.eyebrow { color: var(--accent); text-transform: uppercase; font-size: .78rem; font-weight: 750; letter-spacing: .1em; margin-bottom: .65rem; }
.muted { color: var(--muted); }
.panel { padding: clamp(1.25rem, 4vw, 2rem); background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.login-shell { min-height: 100dvh; display: grid; place-items: center; padding: 1.25rem; }
.login-panel { width: min(100%, 420px); }
.login-panel h1 { margin-bottom: .5rem; }
.login-panel form { display: grid; gap: .7rem; margin-top: 2rem; }
.login-panel form button { margin-top: .75rem; }
.app-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem 2rem; padding: 1rem clamp(1rem, 4vw, 3rem); background: var(--surface); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { color: var(--text); font-size: 1.15rem; font-weight: 750; text-decoration: none; }
.brand span { display: block; font-size: .8rem; font-weight: 400; color: var(--muted); }
.app-header nav { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.app-header nav a { padding-block: .6rem; }
.user-name { overflow-wrap: anywhere; }
.workspace { max-width: 1200px; margin: auto; padding: clamp(1.25rem, 4vw, 3rem); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 1.5rem; }
.full-width { grid-column: 1 / -1; }
.form-error { color: var(--danger); margin: .35rem 0; overflow-wrap: anywhere; }
.users-section { margin-top: 2rem; }
.user-list { display: grid; gap: 1rem; }
.user-card { padding: 1.25rem; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.user-card h3 { margin: 0; font-size: 1.1rem; overflow-wrap: anywhere; }
.user-card p { color: var(--muted); overflow-wrap: anywhere; }
.user-controls { display: flex; gap: 1rem; align-items: end; flex-wrap: wrap; }
.user-controls label { flex: 1 1 180px; }
.user-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1rem; }
dialog { width: min(100% - 2rem, 500px); padding: 2rem; border: 1px solid var(--border); border-radius: 12px; color: var(--text); }
dialog::backdrop { background: #10261d80; }
.password-value { padding: 1rem; background: var(--background); border-radius: 6px; font: 1.2rem/1.6 monospace; overflow-wrap: anywhere; user-select: all; }
.skip-link { position: absolute; left: 1rem; top: -100px; background: var(--surface); padding: .75rem; z-index: 10; }
.skip-link:focus { top: 1rem; }
[hidden] { display: none !important; }
@media (max-width: 640px) {
    .form-grid { grid-template-columns: 1fr; }
    .app-header nav { width: 100%; gap: .75rem; }
    .app-header nav .user-name { flex: 1; }
    .user-actions button { flex: 1 1 150px; }
}

/* Operator workspace; login and administration keep their existing layout. */
.operator-workspace { display: grid; grid-template-columns: minmax(265px, 1fr) minmax(340px, 2fr) minmax(240px, .85fr); height: calc(100dvh - 100px); min-height: 500px; max-width: 1800px; margin: auto; position: relative; }
.operator-workspace h1 { font-size: 1.5rem; margin: 0 0 1rem; }
.operator-workspace h2 { margin: 0; }
.operator-workspace .eyebrow { margin-bottom: .25rem; }
.inbox-column, .chat-column, .card-column { min-width: 0; min-height: 0; background: var(--surface); }
.inbox-column { overflow-y: auto; border-right: 1px solid var(--border); }
.column-header { padding: 1.25rem; border-bottom: 1px solid var(--border); }
.column-header p { margin-bottom: .25rem; }
.column-header form { display: grid; gap: .6rem; }
.column-header form button { justify-self: start; }
.inbox-tabs { display: flex; flex-wrap: wrap; gap: .4rem; padding: 1rem 1.25rem .5rem; }
.inbox-tabs button { font-size: .82rem; padding: .4rem .65rem; }
.inbox-tabs [aria-current=page] { background: var(--accent); color: white; }
.conversation-row { display: grid; gap: .25rem; text-align: left; width: 100%; border: 0; border-bottom: 1px solid var(--border); border-radius: 0; background: white; color: var(--text); padding: 1rem 1.25rem; font-weight: 400; }
.conversation-row:hover, .conversation-row[aria-pressed=true] { background: #eaf2ed; }
.conversation-row[aria-pressed=true] { box-shadow: inset 4px 0 var(--accent); }
.conversation-row strong, .conversation-preview { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conversation-state { font-size: .82rem; color: var(--accent); }
.conversation-preview, .conversation-row small { color: var(--muted); }
.list-status { padding: .3rem 1.25rem; margin: 0; }
.chat-column { display: flex; flex-direction: column; background: #f3f5f4; }
.chat-header { display: flex; align-items: center; gap: .75rem; background: white; }
.chat-header > div { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.chat-header p { margin: .25rem 0 0; font-size: .85rem; }
.chat-scroll { overflow-y: auto; flex: 1; min-height: 0; padding: 1.25rem; }
.empty-state { padding: 3rem 1rem; text-align: center; color: var(--muted); }
.message { padding: .8rem 1rem; width: fit-content; max-width: 88%; margin: .75rem 0; border: 1px solid var(--border); border-radius: 12px; background: white; overflow-wrap: anywhere; }
.message-out { margin-left: auto; background: #e2efe6; }
.message-system { max-width: 100%; margin-inline: auto; text-align: center; background: transparent; border: 0; }
.message-author { font-size: .82rem; font-weight: 700; margin-bottom: .35rem; }
.message-text { white-space: pre-wrap; }
.deleted { text-decoration: line-through; }
.message-meta { font-size: .75rem; color: var(--muted); margin-top: .5rem; }
.message-meta details { margin-top: .4rem; }
.message-meta summary { cursor: pointer; padding-block: .35rem; }
.message blockquote { margin: .3rem 0 .75rem; border-left: 3px solid var(--accent); padding: .4rem .7rem; color: var(--muted); font-size: .85rem; white-space: pre-wrap; }
.message-day { text-align: center; font-size: .8rem; color: var(--muted); margin: 1.25rem 0; }
.message-file { margin-top: .6rem; }
.message-file p { margin-bottom: .4rem; }
.message-file img, .message-file video { max-width: 100%; max-height: 340px; display: block; border-radius: 6px; }
.message-file audio { width: min(280px, 100%); display: block; }
.message-file > a:last-child { display: inline-block; padding-block: .4rem; }
.read-only-note { margin: 0; padding: .8rem 1.25rem; font-size: .8rem; color: var(--muted); border-top: 1px solid var(--border); background: white; }
.card-column { overflow-y: auto; border-left: 1px solid var(--border); }
.card-content { padding: 1.25rem; overflow-wrap: anywhere; }
.profile-fields { margin: 1.5rem 0; }
.profile-fields dt { color: var(--muted); font-size: .8rem; margin-top: 1rem; }
.profile-fields dd { margin: 0; }
.card-form { display: grid; gap: .8rem; }
.card-form button { justify-self: start; }
.load-more { display: block; margin: 1rem auto; }
.workspace-error { position: absolute; top: 0; left: 0; right: 0; background: #fff1ef; padding: .6rem 1rem; z-index: 2; }
.narrow-control { display: none; }
@media (max-width: 1050px) {
    .operator-workspace { display: block; height: calc(100dvh - 145px); }
    .operator-workspace > section, .operator-workspace > aside { display: none; height: 100%; border: 0; }
    .operator-workspace[data-panel=list] .inbox-column, .operator-workspace[data-panel=card] .card-column { display: block; }
    .operator-workspace[data-panel=chat] .chat-column { display: flex; }
    .narrow-control { display: inline-block; }
    .message { max-width: 92%; }
    .chat-header { flex-wrap: wrap; }
}
@media (min-width: 1051px) { [data-show-card] { display: none; } }
.mode-banner { grid-column: 1 / -1; margin: 0; padding: .7rem 1rem; background: #fff0cc; color: #614900; }
.operator-workspace:has(.mode-banner:not([hidden])) { grid-template-rows: auto minmax(0, 1fr); }
.chat-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; padding: .5rem 1rem; }
.chat-actions:empty { display: none; }
.action-menu { position: relative; margin-left: auto; }
.action-menu summary { cursor: pointer; font-size: 1.5rem; padding: 0 .7rem; }
.action-menu button { display: block; margin-top: .4rem; }
.composer { padding: .8rem 1rem; border-top: 1px solid var(--border); background: white; }
.composer textarea { width: 100%; resize: vertical; max-height: 25vh; }
.composer-tools { display: flex; justify-content: space-between; gap: .5rem; align-items: center; flex-wrap: wrap; }
.composer input[type=file] { max-width: 230px; }
.message-reply { margin-left: .6rem; padding: .2rem .4rem; font-size: .75rem; }
.launch-setting { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.launch-setting p { margin-bottom: 0; }
@media (max-width: 1050px) { .mode-banner { font-size: .8rem; } .operator-workspace:has(.mode-banner:not([hidden])) > section, .operator-workspace:has(.mode-banner:not([hidden])) > aside { height: calc(100% - 90px); } }
.operations-table { overflow-x: auto; margin: 1rem 0; }
.operations-table table { width: 100%; border-collapse: collapse; text-align: left; }
.operations-table th, .operations-table td { padding: .65rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.operations-table th { color: var(--muted); }

.text-settings { max-width: 1100px; margin-inline: auto; }
.text-settings .panel { margin-block: 1.5rem; padding: 1.5rem; }
.text-settings form { margin-block: 1rem; }
.text-settings label { display: block; margin-block: .75rem; }
.text-settings textarea, .text-settings select { width: 100%; }
.text-preview { white-space: pre-wrap; overflow-wrap: anywhere; padding: 1rem; background: var(--surface, #f4f5f7); }
.greeting-row { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.schedule-scroll { overflow-x: auto; }
.text-settings table { width: 100%; }
.text-settings th, .text-settings td { text-align: left; padding: .5rem; }