:root {
    --bg-main: #1f1f1f;
    --bg-panel: #212121;
    --bg-soft: #2b2b2b;
    --bg-input: #2f2f2f;
    --bg-elevated: rgba(33, 33, 33, 0.94);
    --bg-glass: rgba(33, 33, 33, 0.72);
    --bg-form: rgba(47, 47, 47, 0.92);
    --border: rgba(148, 163, 184, 0.18);
    --text-main: #ececec;
    --text-soft: #a3a3a3;
    --text-inverse: #ffffff;
    --accent: #10a37f;
    --accent-hover: #0e8f70;
    --danger: #f97066;
    --success: #6ce9a6;
    --user-bubble: #10a37f;
    --bot-bubble: #1e293b;
    --link: #7dd3fc;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
    --surface-muted: rgba(148, 163, 184, 0.06);
    --action-bg: rgba(148, 163, 184, 0.08);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background:
        radial-gradient(circle at top left, rgba(16, 163, 127, 0.12), transparent 30%),
        radial-gradient(circle at bottom right, rgba(59, 130, 246, 0.08), transparent 26%),
        var(--bg-main);
    color: var(--text-main);
}

/* ADDED */
body.light-theme {
    --bg-main: #edf2f7;
    --bg-panel: #ffffff;
    --bg-soft: #f3f7fb;
    --bg-input: #ffffff;
    --bg-elevated: rgba(255, 255, 255, 0.94);
    --bg-glass: rgba(255, 255, 255, 0.82);
    --bg-form: rgba(255, 255, 255, 0.95);
    --border: rgba(15, 23, 42, 0.12);
    --text-main: #0f172a;
    --text-soft: #475569;
    --text-inverse: #ffffff;
    --user-bubble: #10a37f;
    --bot-bubble: #f1f5f9;
    --link: #0f766e;
    --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    --surface-muted: rgba(15, 23, 42, 0.04);
    --action-bg: rgba(15, 23, 42, 0.05);
}

.page-text {
    color: var(--text-soft);
    margin-top: 8px;
    line-height: 1.6;
}

.dark-panel,
.dark-card,
.chat-sidebar,
.chat-header,
.chat-messages,
.top-navbar {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
}

.auth-shell {
    width: 100%;
    max-width: 1120px;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 24px;
}

.auth-showcase,
.auth-card {
    border-radius: 24px;
    padding: 32px;
}

.auth-badge {
    width: fit-content;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(16, 163, 127, 0.14);
    border: 1px solid rgba(16, 163, 127, 0.24);
    margin-bottom: 18px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.auth-showcase h1,
.auth-card h2 {
    font-size: 34px;
    line-height: 1.15;
}

.brand-version {
    margin-top: 10px;
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.showcase-text {
    margin-top: 18px;
    color: #cbd5e1;
    line-height: 1.7;
}

.auth-showcase {
    position: relative;
    overflow: hidden;
}

.auth-showcase::before {
    content: "";
    position: absolute;
    inset: auto -80px -110px auto;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16, 163, 127, 0.16), transparent 68%);
    pointer-events: none;
}

.brand-block {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    min-height: 100%;
}

.brand-block h1 {
    margin-top: 18px;
    font-size: 48px;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

body.light-theme .showcase-text {
    color: #334155;
}

form {
    margin-top: 18px;
}

label {
    display: block;
    margin-top: 16px;
    margin-bottom: 8px;
    font-weight: 600;
}

input,
textarea,
select {
    width: 100%;
    padding: 13px 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-main);
    font-size: 14px;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: rgba(16, 163, 127, 0.7);
    box-shadow: 0 0 0 4px rgba(16, 163, 127, 0.12);
}

button {
    border: none;
    border-radius: 14px;
    padding: 12px 16px;
    margin-top: 18px;
    background: var(--accent);
    color: #ffffff;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s ease, opacity 0.2s ease;
}

button:hover {
    background: var(--accent-hover);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.secondary-button {
    background: #334155;
}

.secondary-button:hover {
    background: #475569;
}

.ghost-button {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}

.ghost-button:hover {
    background: rgba(148, 163, 184, 0.08);
}

.link-button {
    background: transparent;
    color: var(--link);
    padding: 0;
    margin-top: 14px;
    border-radius: 0;
}

.link-button:hover {
    background: transparent;
    opacity: 0.8;
}

.message-box {
    margin-top: 16px;
    min-height: 20px;
    color: var(--danger);
    line-height: 1.5;
}

a {
    color: var(--link);
    text-decoration: none;
}

.auth-footer {
    margin-top: 16px;
}

.hidden-block {
    display: none;
}

.password-status {
    margin-top: 14px;
}

.password-bar {
    height: 10px;
    background: #1f2937;
    border-radius: 999px;
    overflow: hidden;
}

.password-bar span {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #f04438, #f79009, #12b76a);
    transition: width 0.25s ease;
}

.forgot-panel {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.operator-modal {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
}

.operator-modal.hidden-block {
    display: none;
}

.operator-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.74);
    backdrop-filter: blur(6px);
}

.operator-modal-card {
    position: relative;
    z-index: 1;
    width: min(1080px, 100%);
    max-height: min(88vh, 920px);
    overflow-y: auto;
    padding: 28px;
    border-radius: 28px;
    background:
        radial-gradient(circle at top right, rgba(16, 163, 127, 0.14), transparent 28%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 24%),
        var(--bg-panel);
    border: 1px solid var(--border);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.38);
}

.operator-modal-header,
.operator-section-header,
.operator-item-topline {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.operator-modal-kicker,
.operator-summary-label {
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 12px;
}

.operator-modal-header h2 {
    margin-top: 8px;
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.05;
}

.operator-modal-subtitle {
    max-width: 640px;
}

.operator-close-button {
    margin-top: 0;
    min-width: 100px;
}

.operator-modal-grid {
    display: block;
    margin-top: 24px;
}

.operator-create-card,
.operator-list-card {
    border-radius: 22px;
    border: 1px solid var(--border);
    background: var(--surface-muted);
    padding: 22px;
}

.operator-list-card {
    margin-top: 18px;
}

.operator-admin-strip {
    display: grid;
    grid-template-columns: minmax(220px, 0.9fr) minmax(260px, 1.1fr);
    gap: 14px;
    margin-bottom: 20px;
}

.operator-admin-card,
.operator-stat-card {
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    padding: 16px 18px;
}

.operator-admin-card strong,
.operator-stat-card strong {
    display: block;
    margin-top: 8px;
    font-size: 22px;
}

.operator-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.operator-stat-card span {
    color: var(--text-soft);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.operator-create-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 14px;
    align-items: end;
    margin-top: 18px;
}

.operator-field label {
    margin-top: 0;
}

.operator-create-form button,
.operator-action-button {
    margin-top: 0;
}

.operator-message-box {
    margin-top: 14px;
}

.operator-list {
    display: grid;
    gap: 14px;
    margin-top: 18px;
    max-height: 340px;
    overflow-y: auto;
    padding-right: 8px;
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.55) transparent;
}

.operator-list::-webkit-scrollbar {
    width: 10px;
}

.operator-list::-webkit-scrollbar-track {
    background: transparent;
}

.operator-list::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.4);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

.operator-list::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.62);
    background-clip: padding-box;
}

.operator-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
}

.operator-item-info {
    display: grid;
    gap: 6px;
    min-width: 0;
}

.operator-item-info strong {
    font-size: 18px;
}

.operator-item-info span,
.operator-item-info small {
    color: var(--text-soft);
    word-break: break-word;
}

.operator-item-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.operator-delete-button {
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.24);
}

.operator-delete-button:hover {
    background: rgba(239, 68, 68, 0.08);
}

.operator-status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.03em;
    border: 1px solid transparent;
}

.status-active {
    color: #6ce9a6;
    background: rgba(12, 180, 92, 0.12);
    border-color: rgba(12, 180, 92, 0.2);
}

.status-inactive {
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.2);
}

.status-pending {
    color: #facc15;
    background: rgba(250, 204, 21, 0.12);
    border-color: rgba(250, 204, 21, 0.18);
}

body.operator-modal-open {
    overflow: hidden;
}

.chat-page {
    min-height: 100dvh;
    height: 100vh;
    padding: 0;
    overflow: hidden;
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.58);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 20;
}

.chat-layout {
    min-height: 0;
    height: 100vh;
    display: block;
}

.chat-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    border-radius: 0;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    box-shadow: none;
    z-index: 25;
    transform: translateX(0);
    transition: transform 0.28s ease;
}

body.sidebar-collapsed .chat-sidebar {
    transform: translateX(-100%);
}

.sidebar-panel {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sidebar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.small-button {
    width: auto;
    margin-top: 0;
}

.chat-session-list {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-right: 8px;
    scrollbar-width: thin;
}

.chat-session-item {
    width: 100%;
    text-align: left;
    background: transparent;
    border: 1px solid transparent;
    padding: 12px 14px;
    border-radius: 14px;
}

.chat-session-item.active,
.chat-session-item:hover {
    background: rgba(148, 163, 184, 0.08);
    border-color: rgba(148, 163, 184, 0.12);
}

.chat-session-item strong,
.chat-session-item span,
.chat-session-item small {
    display: block;
}

.chat-session-item strong {
    color: var(--text-main);
    font-weight: 700;
    line-height: 1.35;
}

.chat-session-item span,
.chat-session-item small {
    color: var(--text-soft);
    margin-top: 6px;
}

.chat-session-item.active strong,
.chat-session-item:hover strong {
    color: var(--text-main);
}

body.light-theme .chat-session-item {
    background: rgba(255, 255, 255, 0.72);
}

body.light-theme .chat-session-item strong {
    color: #0f172a;
}

body.light-theme .chat-session-item span,
body.light-theme .chat-session-item small {
    color: #334155;
}

body.light-theme .chat-session-item.active,
body.light-theme .chat-session-item:hover {
    background: rgba(16, 163, 127, 0.16);
    border-color: rgba(16, 163, 127, 0.22);
}

body.light-theme .chat-session-item.active strong,
body.light-theme .chat-session-item:hover strong {
    color: #0b172a;
}

.chat-content,
.chat-messages,
.chat-form,
.chat-toolbar {
    border-radius: 24px;
}

.chat-main {
    min-height: 0;
    height: 100%;
    margin-left: 280px;
}

body.sidebar-collapsed .chat-main {
    margin-left: 0;
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-soft);
    font-size: 14px;
    cursor: pointer;
}

.theme-toggle input {
    display: none;
}

.theme-slider {
    width: 46px;
    height: 26px;
    border-radius: 999px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    position: relative;
    transition: background 0.2s ease;
}

.theme-slider::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #ffffff;
    transition: transform 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-toggle input:checked + .theme-slider {
    background: var(--accent);
}

.theme-toggle input:checked + .theme-slider::after {
    transform: translateX(20px);
}

.sidebar-toggle-button {
    display: inline-flex;
    margin-top: 0;
    width: 46px;
    height: 46px;
    padding: 0;
    font-size: 24px;
    line-height: 1;
    background: var(--surface-muted);
    color: var(--text-main);
    border: 1px solid var(--border);
    align-items: center;
    justify-content: center;
}

.chat-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    width: calc(100% - 32px);
    padding: 14px 18px;
    position: absolute;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 12;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 24px;
    backdrop-filter: blur(14px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.chat-toolbar-select {
    min-width: 160px;
    position: relative;
}

.bot-select-button {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    padding: 12px 16px;
    border-radius: 18px;
    box-shadow: none;
    font-size: 16px;
    font-weight: 600;
    min-width: 150px;
    margin-top: 0;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.bot-select-button:hover {
    background: var(--bg-soft);
}

.bot-select-chevron {
    font-size: 12px;
    color: var(--text-soft);
}

.bot-select-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 100%;
    padding: 8px;
    border-radius: 20px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 40;
}

.bot-select-option {
    width: 100%;
    margin-top: 0;
    padding: 12px 14px;
    border-radius: 14px;
    background: transparent;
    color: var(--text-main);
    border: 1px solid transparent;
    text-align: left;
}

.bot-select-option:hover,
.bot-select-option.is-selected {
    background: rgba(16, 163, 127, 0.16);
    border-color: rgba(16, 163, 127, 0.22);
}

.chat-toolbar-spacer {
    flex: 1;
}

.profile-menu {
    position: relative;
}

.profile-menu-button {
    width: 42px;
    height: 42px;
    margin-top: 0;
    padding: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, #10a37f, #0f766e);
    color: #ffffff;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.profile-menu-button:hover {
    background: linear-gradient(135deg, #12b089, #115e59);
}

.profile-menu-panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 220px;
    padding: 14px;
    border-radius: 18px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 35;
}

.profile-menu-label {
    color: var(--text-soft);
    font-size: 12px;
    margin-bottom: 6px;
}

.profile-menu-email {
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
}

.profile-menu-role {
    margin-top: 8px;
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.profile-logout-button {
    width: 100%;
    margin-top: 12px;
}

.profile-version-indicator {
    margin-top: 12px;
    color: #fca5a5;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-align: center;
    text-shadow: 0 0 10px rgba(248, 113, 113, 0.35);
    animation: versionPulse 1.8s ease-in-out infinite;
}

body.light-theme .profile-version-indicator {
    color: #dc2626;
    text-shadow: 0 0 10px rgba(220, 38, 38, 0.22);
}

.chat-content {
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    height: 100%;
    background: var(--bg-elevated);
    overflow: hidden;
    border-radius: 0;
}

.machine-stats-card {
    width: min(920px, 100%);
}

.machine-live-modal-card {
    width: min(980px, 100%);
}

.machine-stats-section {
    margin-top: 24px;
}

.machine-stats-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 20px;
}

.machine-stats-machine-label,
.machine-highlight-label {
    color: var(--text-soft);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
}

.machine-stats-machine-name,
.machine-trend-title {
    display: block;
    margin-top: 8px;
    font-size: clamp(24px, 3vw, 34px);
}

.machine-status-badge {
    display: inline-flex;
    align-items: center;
    margin-top: 12px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.machine-status-badge.is-on {
    background: rgba(34, 197, 94, 0.12);
    border-color: rgba(34, 197, 94, 0.28);
    color: #86efac;
}

.machine-status-badge.is-off {
    background: rgba(248, 113, 113, 0.1);
    border-color: rgba(248, 113, 113, 0.24);
    color: #fca5a5;
}

.machine-range-tabs {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(148, 163, 184, 0.06);
}

.machine-range-tab {
    min-width: 72px;
    padding: 10px 16px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--text-soft);
    font-size: 13px;
    font-weight: 600;
    box-shadow: none;
}

.machine-range-tab:hover {
    background: rgba(148, 163, 184, 0.08);
}

.machine-range-tab.is-selected {
    background: #3657a7;
    color: #f8fafc;
}

.machine-highlight-card,
.machine-trend-card {
    border-radius: 24px;
    border: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.4);
    padding: 22px 24px;
}

.machine-highlight-value {
    display: block;
    margin-top: 10px;
    font-size: clamp(34px, 5vw, 52px);
    line-height: 1.05;
}

.machine-highlight-subtitle {
    display: block;
    margin-top: 8px;
    color: var(--text-soft);
    font-size: 14px;
}

.machine-trend-card {
    margin-top: 18px;
}

.machine-trend-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.machine-trend-bars {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-top: 22px;
    min-height: 190px;
}

.machine-trend-bar-item {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 10px;
    min-width: 0;
}

.machine-trend-value,
.machine-trend-label {
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-align: center;
}

.machine-trend-value {
    color: var(--text-main);
    font-size: 15px;
}

.machine-trend-bar-track {
    position: relative;
    display: flex;
    align-items: flex-end;
    min-height: 130px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    overflow: hidden;
}

.machine-trend-bar-fill {
    width: 100%;
    border-radius: 14px 14px 0 0;
    background: linear-gradient(180deg, #6ea8ff, #3657a7);
    transition: height 0.25s ease;
}

.machine-trend-bar-item.is-selected .machine-trend-bar-track {
    border-color: rgba(110, 168, 255, 0.62);
    box-shadow: inset 0 0 0 1px rgba(110, 168, 255, 0.2);
}

.machine-trend-bar-item.is-selected .machine-trend-label {
    color: #dbeafe;
}

.machine-metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.machine-metric-card {
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    padding: 18px 20px;
    min-height: 164px;
}

.machine-metric-card span {
    display: block;
    color: var(--text-soft);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.machine-metric-card strong {
    display: block;
    margin-top: 22px;
    font-size: 38px;
    line-height: 1.15;
}

.machine-metric-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}

.machine-metric-meta span {
    display: inline-flex;
    align-items: center;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.08);
    color: var(--text-soft);
    font-size: 12px;
    line-height: 1;
}

.machine-live-card {
    margin-top: 24px;
    border-radius: 24px;
    border: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.4);
    padding: 22px 24px;
}

.machine-live-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.machine-live-title {
    display: block;
    margin-top: 8px;
    font-size: clamp(22px, 3vw, 32px);
}

.machine-live-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.machine-live-frame {
    position: relative;
    display: grid;
    place-items: center;
    margin-top: 18px;
    min-height: 360px;
    aspect-ratio: 16 / 9;
    border-radius: 18px;
    border: 1px solid var(--border);
    background:
        linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(30, 41, 59, 0.84));
    overflow: hidden;
}

.machine-live-frame::before {
    content: "Live feed will appear here";
    color: var(--text-soft);
    font-size: 14px;
}

.machine-live-frame.is-active::before {
    content: "";
}

.machine-live-frame img {
    display: none;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #020617;
}

.machine-live-frame.is-active img {
    display: block;
}

.machine-highlight-subtitle.is-error {
    color: #fca5a5;
}

.chat-messages {
    flex: 1;
    min-height: 0;
    padding: 132px 32px 210px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 18px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
}

.chat-empty-state {
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    text-align: center;
    padding: 120px 32px 220px;
}

.chat-empty-state h2 {
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.08;
    letter-spacing: -0.03em;
    max-width: 560px;
    font-weight: 600;
}

.chat-empty-kicker {
    margin-bottom: 14px;
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 12px;
}

body.chat-is-empty .chat-empty-state {
    display: flex;
}

body.chat-is-empty .chat-messages {
    display: none;
}

.message-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
    opacity: 0;
    transform: translateY(8px);
    animation: messageFadeIn 0.28s ease forwards;
    width: 100%;
}

.message-bubble {
    max-width: 78%;
    padding: 14px 16px;
    border-radius: 18px;
    line-height: 1.6;
    white-space: pre-wrap;
}

.message-user {
    align-items: flex-end;
    padding-right: 6px;
}

.message-user .message-bubble {
    background: var(--user-bubble);
    color: #ffffff;
    border-bottom-right-radius: 6px;
}

.message-assistant {
    align-items: flex-start;
}

.message-assistant .message-bubble {
    background: var(--bot-bubble);
    color: var(--text-main);
    border-bottom-left-radius: 6px;
}

/* ADDED */
.message-label {
    font-size: 12px;
    color: var(--text-soft);
    font-weight: 600;
}

.message-actions {
    display: flex;
    gap: 8px;
    margin-top: 2px;
}

.message-action-button {
    margin-top: 0;
    padding: 7px 10px;
    border-radius: 10px;
    background: var(--action-bg);
    color: var(--text-soft);
    border: 1px solid var(--border);
    font-size: 12px;
}

.message-action-button:hover {
    background: var(--surface-muted);
}

.typing-bubble {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-soft);
    animation: typingPulse 1s infinite ease-in-out;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.15s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.3s;
}

.smart-suggestions {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding: 0;
    position: absolute;
    left: 36px;
    right: 36px;
    bottom: 126px;
    z-index: 11;
}

.smart-suggestions::-webkit-scrollbar {
    display: none;
}

.suggestion-chip {
    margin-top: 0;
    padding: 10px 14px;
    border-radius: 999px;
    background: var(--surface-muted);
    color: var(--text-main);
    border: 1px solid var(--border);
    white-space: nowrap;
    flex: 0 0 auto;
}

.suggestion-chip:hover {
    background: rgba(16, 163, 127, 0.14);
}

.message-meta {
    margin-top: 6px;
    color: var(--text-soft);
    font-size: 12px;
}

.chat-form {
    display: flex;
    gap: 12px;
    padding: 18px 20px;
    margin: 0;
    position: absolute;
    left: 44px;
    right: 44px;
    bottom: 20px;
    z-index: 12;
    background: var(--bg-form);
    border: 1px solid var(--border);
    flex-shrink: 0;
    align-items: flex-end;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
    border-radius: 26px;
}

/* UPDATED */
.chat-form textarea {
    flex: 1;
    resize: none;
    min-height: 56px;
    max-height: 160px;
    line-height: 1.5;
    padding-top: 16px;
    padding-bottom: 16px;
}

.chat-form button {
    width: 120px;
    min-height: 56px;
    margin-top: 0;
    align-self: center;
}

/* ADDED */
@keyframes typingPulse {
    0%, 80%, 100% {
        transform: scale(0.9);
        opacity: 0.45;
    }

    40% {
        transform: scale(1.1);
        opacity: 1;
    }
}

@keyframes messageFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes versionPulse {
    0%, 100% {
        opacity: 0.55;
        transform: scale(0.98);
    }

    50% {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 900px) {
    .auth-shell,
    .chat-layout {
        grid-template-columns: 1fr;
    }

    .chat-page {
        min-height: 100dvh;
        height: 100dvh;
        padding: 0 0 env(safe-area-inset-bottom);
        overflow: hidden;
    }

    .chat-layout {
        height: 100dvh;
    }

    .chat-sidebar {
        top: 0;
        left: 0;
        bottom: 0;
        width: min(310px, calc(100vw - 24px));
        border-radius: 0 28px 28px 0;
        padding: calc(16px + env(safe-area-inset-top)) 16px calc(16px + env(safe-area-inset-bottom));
        border: none;
        border-right: 1px solid var(--border);
        box-shadow: var(--shadow);
        transform: translateX(-110%);
    }

    .chat-main {
        min-height: 100dvh;
        margin-left: 0;
    }

    .theme-toggle {
        gap: 0;
    }

    .theme-toggle #theme-label {
        display: none;
    }

    .theme-slider {
        width: 40px;
        height: 24px;
    }

    .theme-slider::after {
        width: 16px;
        height: 16px;
    }

    .theme-toggle input:checked + .theme-slider::after {
        transform: translateX(16px);
    }

    .sidebar-toggle-button {
        width: 40px;
        height: 40px;
        font-size: 21px;
        border-radius: 12px;
    }

    .chat-toolbar {
        width: calc(100% - 20px);
        top: calc(10px + env(safe-area-inset-top));
        left: 10px;
        right: 10px;
        padding: 10px 12px;
        border-radius: 22px;
        border: 1px solid var(--border);
        background: var(--bg-glass);
        box-shadow: 0 10px 26px rgba(0, 0, 0, 0.2);
    }

    .chat-toolbar-select {
        min-width: 0;
        flex: 1;
    }

    .bot-select-button {
        min-width: 0;
        width: 100%;
        border-radius: 18px;
        padding: 12px 14px;
    }

    .profile-menu-panel {
        right: 0;
        min-width: 200px;
    }

    .chat-content {
        gap: 0;
        padding: 0;
    }

    .chat-empty-state {
        padding: 108px 18px 176px;
    }

    .machine-metrics-grid {
        grid-template-columns: 1fr;
    }

    .machine-stats-topbar {
        flex-direction: column;
        align-items: stretch;
    }

    .machine-live-header {
        flex-direction: column;
        align-items: stretch;
    }

    .machine-live-actions {
        justify-content: stretch;
    }

    .machine-live-actions button {
        flex: 1 1 140px;
    }

    .machine-live-card {
        margin-top: 18px;
        padding: 18px;
    }

    .machine-live-frame {
        min-height: 0;
        aspect-ratio: 4 / 3;
        max-height: min(44vh, 280px);
        border-radius: 16px;
    }

    .machine-live-frame::before {
        padding: 0 16px;
        text-align: center;
    }

    .machine-trend-header {
        flex-direction: column;
    }

    .machine-trend-bars {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .machine-range-tabs {
        width: 100%;
        overflow-x: auto;
    }

    .machine-range-tab {
        flex: 1 0 auto;
    }

    .chat-empty-state h2 {
        font-size: clamp(24px, 8vw, 36px);
        max-width: 280px;
    }

    .operator-modal {
        padding: 14px;
    }

    .operator-modal-card {
        padding: 18px;
        max-height: 92vh;
    }

    .operator-admin-strip,
    .operator-stats-grid {
        grid-template-columns: 1fr;
    }

    .operator-modal-header,
    .operator-section-header,
    .operator-item,
    .operator-item-topline {
        flex-direction: column;
        align-items: stretch;
    }

    .operator-create-form {
        grid-template-columns: 1fr;
    }

    .operator-item-actions {
        width: 100%;
    }

    .operator-action-button {
        width: 100%;
    }

    .chat-empty-kicker {
        font-size: 11px;
        letter-spacing: 0.2em;
    }

    .chat-messages {
        padding: 108px 10px 164px;
        border-radius: 0;
        border: none;
        box-shadow: none;
        background: transparent;
        gap: 14px;
    }

    .message-bubble {
        max-width: 94%;
        font-size: 14px;
        line-height: 1.55;
    }

    .smart-suggestions {
        gap: 8px;
        left: 10px;
        right: 10px;
        bottom: 86px;
        padding: 0;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .smart-suggestions::-webkit-scrollbar {
        display: none;
    }

    body.chat-is-empty .smart-suggestions {
        justify-content: flex-start;
    }

    .suggestion-chip {
        padding: 9px 12px;
        font-size: 13px;
        white-space: nowrap;
        background: var(--surface-muted);
    }

    .chat-form {
        flex-direction: row;
        align-items: center;
        gap: 10px;
        padding: 10px;
        left: 12px;
        right: 12px;
        bottom: calc(10px + env(safe-area-inset-bottom));
        border-radius: 22px;
        background: var(--bg-form);
        backdrop-filter: blur(14px);
        box-shadow: 0 14px 32px rgba(0, 0, 0, 0.25);
    }

    .chat-form textarea {
        min-height: 48px;
        max-height: 120px;
        padding-top: 12px;
        padding-bottom: 12px;
        font-size: 14px;
        border: none;
        background: transparent;
        box-shadow: none;
    }

    .chat-form button {
        width: 48px;
        min-width: 48px;
        min-height: 48px;
        align-self: center;
        border-radius: 50%;
        padding: 0;
        font-size: 0;
        position: relative;
    }

    .chat-form button::before {
        content: "\2191";
        font-size: 20px;
        line-height: 1;
    }

    .small-button {
        width: 100%;
    }

    body.sidebar-open .chat-sidebar {
        transform: translateX(0);
    }

    body.sidebar-open .sidebar-overlay {
        opacity: 1;
        pointer-events: auto;
    }
}