* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    background: radial-gradient(circle at top right, #d8e8ff, #eef3f8 40%, #f8fafc);
    color: #18212f;
}
.page {
    max-width: 1080px;
    margin: 24px auto;
    padding: 0 16px 24px;
}
.topbar, .panel {
    background: #ffffff;
    border: 1px solid #d6e0ea;
    border-radius: 14px;
    box-shadow: 0 6px 16px rgba(16, 24, 40, 0.06);
}
.topbar {
    padding: 16px 18px;
    margin-bottom: 16px;
}
.topbar h1 {
    margin: 0 0 10px;
    font-size: 22px;
}
.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}
.panel {
    padding: 18px;
}
.hidden { display: none; }
label {
    display: block;
    margin: 10px 0 6px;
    font-size: 13px;
    font-weight: 600;
}
input, select, textarea {
    width: 100%;
    border: 1px solid #b9c6d8;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 14px;
    background: #fff;
}
textarea { resize: vertical; min-height: 72px; }
.btn {
    border: 0;
    border-radius: 10px;
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 600;
}
.btn.primary { margin-top: 14px; background: #1759d6; color: #fff; width: 100%; }
.btn.send { background: #0f9a60; color: #fff; min-width: 96px; }
.btn.subtle { background: #e7edf5; color: #2d4059; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.error { color: #b42318; font-size: 13px; min-height: 18px; }
.badge {
    font-size: 12px;
    border-radius: 999px;
    padding: 5px 10px;
    background: #ebf0f6;
}
.badge.connected { background: #d7f0e1; color: #0f6a3c; }
.badge.disconnected { background: #f8dada; color: #8b1e1e; }
.meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.mode-row {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 10px;
    align-items: center;
    margin-bottom: 12px;
}
.mode-row label {
    margin: 0;
}
.admin-panel {
    border: 1px solid #d6e0ea;
    border-radius: 12px;
    background: #f9fbfd;
    padding: 10px;
    margin-bottom: 12px;
}
.admin-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}
.admin-panel-head h3 {
    margin: 0;
    font-size: 14px;
}
.admin-list {
    display: grid;
    gap: 8px;
}
.admin-item {
    border: 1px solid #cdd8e6;
    border-radius: 10px;
    padding: 8px;
    background: #fff;
}
.admin-item-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
}
.admin-item-text {
    font-size: 13px;
    line-height: 1.35;
}
.admin-item-meta {
    margin-top: 6px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 12px;
    color: #55657d;
}
.history {
    border: 1px solid #d6e0ea;
    border-radius: 12px;
    background: #f9fbfd;
    min-height: 320px;
    max-height: 420px;
    overflow-y: auto;
    padding: 12px;
}
.message {
    max-width: 82%;
    border-radius: 12px;
    padding: 10px;
    margin-bottom: 10px;
}
.message.user { margin-left: auto; background: #1759d6; color: #fff; }
.message.agent { margin-right: auto; background: #e9eef6; }
.message.system {
    margin: 10px auto;
    max-width: 88%;
    text-align: center;
    background: #fff3cd;
    color: #73510a;
}
.message .head {
    font-size: 12px;
    opacity: 0.78;
    margin-bottom: 4px;
}
.composer {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    margin-top: 12px;
}
.composer-actions {
    display: grid;
    gap: 8px;
    align-content: start;
}
.btn.small {
    padding: 6px 10px;
    font-size: 12px;
}
.footer-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-top: 8px;
}
.typing {
    margin-left: auto;
    font-size: 12px;
    color: #526581;
    font-style: italic;
}
@media (max-width: 760px) {
    .composer { grid-template-columns: 1fr; }
    .btn.send { width: 100%; }
    .mode-row { grid-template-columns: 1fr; }
}