:root {
  --bg: #f5f7fb;
  --panel: #fff;
  --text: #172033;
  --muted: #667085;
  --line: #d9e0ea;
  --blue: #2563eb;
  --green: #14a44d;
  --orange: #f59e0b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 "Microsoft YaHei", Arial, sans-serif;
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

body.logged-out {
  display: block;
}

body.logged-out .sidebar,
body.logged-out main {
  display: none;
}

.login-screen {
  display: none;
  min-height: 100vh;
  place-items: center;
  background: #f5f7fb;
  padding: 24px;
}

.login-screen.active {
  display: grid;
}

.auth-card {
  width: min(520px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 18px 60px rgba(15, 23, 42, 0.1);
}

.auth-heading {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
}

.auth-heading h2 {
  font-size: 28px;
  line-height: 1.2;
  margin: 4px 0 8px;
}

.eyebrow {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.auth-subtitle,
.auth-note {
  color: var(--muted);
  font-size: 13px;
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  margin: 24px 0 18px;
  background: #f1f5f9;
  border-radius: 8px;
}

.auth-tab {
  background: transparent;
  color: var(--muted);
  border-radius: 6px;
  padding: 9px 12px;
}

.auth-tab.active {
  background: white;
  color: var(--text);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.12);
}

.auth-form {
  display: grid;
  gap: 10px;
}

.auth-form[hidden] {
  display: none;
}

.auth-form button {
  margin-top: 6px;
}

.auth-note {
  margin-top: 2px;
}

.login-card {
  width: min(420px, 100%);
  background: white;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px;
  box-shadow: 0 16px 50px rgba(15, 23, 42, 0.08);
  display: grid;
  gap: 12px;
}

.login-card .logo {
  margin-bottom: 4px;
}

.login-card h2 {
  font-size: 24px;
}

.login-card p {
  color: var(--muted);
  margin-bottom: 8px;
}

.login-error {
  min-height: 20px;
  color: #dc2626;
}

.trial-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(160px, 260px) auto;
  gap: 14px;
  align-items: center;
  background: #eef4ff;
  border: 1px solid #cbdcfb;
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
}

.trial-banner-main {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.trial-banner-main .muted {
  margin-top: 0;
}

.trial-progress {
  height: 7px;
  border-radius: 999px;
  background: #dbe7fb;
  overflow: hidden;
}

.trial-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}

.billing-summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
}

.billing-summary strong,
.billing-summary span {
  display: block;
}

.billing-summary strong {
  margin-bottom: 3px;
}

.knowledge-toolbar,
.knowledge-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.knowledge-toolbar select {
  flex: 1;
}

.file-picker {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 9px 12px;
  border-radius: 8px;
  background: #eef4ff;
  color: var(--blue);
  cursor: pointer;
  white-space: nowrap;
}

.file-picker input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.knowledge-actions {
  justify-content: space-between;
}

.knowledge-actions .muted {
  margin-top: 0;
}

.sidebar {
  background: #111827;
  color: white;
  padding: 18px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 22px;
}

.logo {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--blue);
  display: grid;
  place-items: center;
  font-weight: 800;
}

h1, h2, h3, p { margin: 0; }
.brand h1 { font-size: 18px; }
.brand p { color: #b6c0d1; font-size: 12px; }

.nav {
  width: 100%;
  border: 0;
  background: transparent;
  color: #cbd5e1;
  text-align: left;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 4px;
}

.nav.active, .nav:hover {
  background: #243044;
  color: white;
}

.nav.logout {
  margin-top: 18px;
  color: #fecaca;
}

main { padding: 24px; }
header {
  margin-bottom: 18px;
}
header h2 { font-size: 24px; margin-bottom: 6px; }
header p { color: var(--muted); }

.view { display: none; }
.view.active { display: block; }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}
.metrics div, .panel, .card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}
.metrics strong { font-size: 28px; display: block; }
.metrics span { color: var(--muted); }

.plain { margin: 8px 0 0; padding-left: 18px; }
.plain li { margin: 6px 0; }
.muted { color: var(--muted); margin-top: 10px; }
.section-title { margin: 22px 0 12px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.card h3 { margin-bottom: 8px; }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eaf1ff;
  color: var(--blue);
  font-size: 12px;
  margin: 4px 6px 0 0;
}
.badge.green { background: #e8f7ee; color: var(--green); }
.badge.orange { background: #fff4df; color: var(--orange); }

.split {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 14px;
  min-height: 560px;
}
.list, textarea, input, select {
  width: 100%;
  border: 1px solid var(--line);
  background: white;
  border-radius: 8px;
}
.list { padding: 10px; }
.list button {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  border-radius: 8px;
  background: #f8fafc;
  padding: 10px;
  margin-bottom: 8px;
  cursor: pointer;
}
.list button.active { background: #eaf1ff; color: var(--blue); }

textarea {
  min-height: 360px;
  padding: 12px;
  resize: vertical;
  font-family: Consolas, "Microsoft YaHei", monospace;
}
input, select {
  height: 40px;
  padding: 8px 10px;
}
button {
  border: 0;
  background: var(--blue);
  color: white;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.58;
}

.tester {
  display: grid;
  gap: 10px;
  max-width: 920px;
  margin-bottom: 16px;
}
.workbench {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(420px, 1.1fr);
  gap: 16px;
}
.workbench .panel {
  display: grid;
  gap: 10px;
  align-content: start;
}
.workbench textarea {
  min-height: 180px;
  font-size: 15px;
}
#wb-reply {
  min-height: 320px;
  font-size: 17px;
  line-height: 1.7;
}
.quick-row,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.quick-row button {
  background: #eef4ff;
  color: var(--blue);
}
button.secondary {
  background: #e5e7eb;
  color: #111827;
}
#test-reply { min-height: 140px; font-size: 16px; }
#history .item {
  border-top: 1px solid var(--line);
  padding: 10px 0;
}
#history .item:first-child { border-top: 0; }
#history b { display: block; }
.plan strong {
  display: block;
  font-size: 24px;
  margin: 8px 0;
}

/* Camera and greeting workspace */
.camera-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.eyebrow {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 4px;
}

.camera-header-actions,
.preview-actions,
.greeting-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

#camera-start-greeting {
  background: #0b8f5a;
  box-shadow: 0 4px 12px rgba(11, 143, 90, 0.18);
}

#camera-start-greeting:hover {
  background: #087443;
}

.status-pill,
.inline-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--muted);
  background: #f8fafc;
  white-space: nowrap;
}

.status-pill.online {
  color: #087443;
  border-color: #a9dfbf;
  background: #effaf3;
}

.status-pill.pending {
  color: #9a5b00;
  border-color: #f4d28b;
  background: #fff8e9;
}

.status-pill.attention {
  color: #9b2c2c;
  border-color: #f3b7b7;
  background: #fff1f1;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #98a2b3;
  flex: 0 0 auto;
}

.status-pill.online .status-dot,
.stage-badge .status-dot {
  background: var(--green);
}

.status-pill.pending .status-dot {
  background: var(--orange);
}

.status-pill.attention .status-dot {
  background: #dc4b4b;
}

.camera-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.75fr);
  gap: 16px;
  align-items: start;
}

.camera-main-column,
.camera-side-column {
  display: grid;
  gap: 16px;
  min-width: 0;
}

/* Let camera panels shrink with the single-column mobile grid. */
.camera-main-column > *,
.camera-side-column > * {
  min-width: 0;
}

.camera-preview-panel {
  padding: 16px;
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-heading h3 {
  margin-bottom: 2px;
}

.compact-heading {
  align-items: center;
}

.compact-heading .muted {
  margin-top: 2px;
}

.camera-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 280px;
  overflow: hidden;
  border: 1px solid #263653;
  border-radius: 8px;
  background: #0b1220;
  isolation: isolate;
}

.camera-stage.is-attention {
  border-color: #e58a8a;
  box-shadow: 0 0 0 3px rgba(220, 75, 75, 0.12);
}

.camera-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 180ms ease;
  transform: scaleX(-1);
}

.camera-video.is-visible {
  opacity: 1;
}

.camera-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  color: #d7deea;
  text-align: center;
  padding: 24px;
  background:
    linear-gradient(rgba(24, 38, 63, 0.84), rgba(11, 18, 32, 0.96)),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0, rgba(255, 255, 255, 0.035) 1px, transparent 1px, transparent 10px);
}

.camera-placeholder.hidden {
  display: none;
}

.camera-placeholder strong {
  color: #f8fafc;
  font-size: 17px;
}

.camera-placeholder span:not(.camera-glyph) {
  color: #9eabc0;
  font-size: 13px;
}

.camera-glyph {
  position: relative;
  width: 42px;
  height: 30px;
  border: 2px solid #8ea4c5;
  border-radius: 7px;
}

.camera-glyph::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 6px;
  width: 12px;
  height: 12px;
  border: 2px solid #8ea4c5;
  border-radius: 50%;
}

.camera-glyph::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 8px;
  width: 7px;
  height: 12px;
  border: 2px solid #8ea4c5;
  border-left: 0;
  border-radius: 0 4px 4px 0;
}

.person-overlay {
  position: absolute;
  left: 35%;
  top: 20%;
  width: 28%;
  height: 58%;
  border: 2px solid #63d391;
  border-radius: 7px;
  box-shadow: 0 0 0 1px rgba(8, 116, 67, 0.2), 0 10px 28px rgba(5, 20, 13, 0.25);
  pointer-events: none;
  z-index: 2;
}

.person-overlay[hidden] {
  display: none;
}

.vision-target-box {
  position: absolute;
  border: 2px solid #f6c453;
  border-radius: 7px;
  box-shadow: 0 0 0 1px rgba(246, 196, 83, 0.25), 0 8px 22px rgba(5, 20, 13, 0.2);
  pointer-events: none;
  z-index: 2;
}

.vision-target-box[hidden] {
  display: none;
}

.vision-target-box span {
  position: absolute;
  left: -2px;
  top: -26px;
  padding: 4px 7px;
  border-radius: 4px 4px 0 0;
  color: #3b2b00;
  background: #f6c453;
  font-size: 11px;
  white-space: nowrap;
}

.overlay-label {
  position: absolute;
  left: -2px;
  top: -27px;
  border-radius: 4px 4px 0 0;
  padding: 4px 7px;
  color: #082b19;
  background: #63d391;
  font-size: 11px;
  white-space: nowrap;
}

.stage-badge {
  position: absolute;
  right: 10px;
  top: 10px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  padding: 5px 9px;
  color: #e7eef9;
  background: rgba(11, 18, 32, 0.72);
  font-size: 12px;
}

.preview-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  flex-wrap: wrap;
}

.preview-separator {
  color: #b5bfce;
}

.vision-analysis-panel {
  display: grid;
  gap: 14px;
}

.vision-analysis-layout {
  display: grid;
  grid-template-columns: minmax(180px, 0.72fr) minmax(0, 1.28fr);
  gap: 16px;
  align-items: start;
}

.vision-snapshot-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 130px;
  overflow: hidden;
  border: 1px solid #263653;
  border-radius: 6px;
  background: #0b1220;
}

.vision-snapshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.vision-snapshot-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #9eabc0;
  font-size: 12px;
}

.vision-snapshot-empty[hidden] {
  display: none;
}

.vision-result-column {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.vision-summary-block strong {
  display: block;
  margin-top: 5px;
  font-size: 17px;
}

.vision-field-label {
  color: #475467;
  font-size: 12px;
  font-weight: 700;
}

.vision-people-list {
  display: grid;
  gap: 7px;
  margin-top: 7px;
}

.vision-person-item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  min-height: 34px;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfe;
  color: #344054;
  font-size: 13px;
}

.vision-person-item.is-priority {
  border-color: #9bd7b4;
  background: #f3fcf6;
}

.vision-person-marker {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  color: #075d37;
  background: #dff6e8;
  font-size: 11px;
  font-weight: 700;
}

.vision-empty-result {
  margin: 0;
}

.vision-greeting-builder {
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(130px, 0.6fr) minmax(240px, 1.4fr);
  gap: 8px 10px;
  align-items: end;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.vision-greeting-builder[hidden] {
  display: none;
}

.vision-form-field {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.vision-form-field label {
  color: #475467;
  font-size: 12px;
  font-weight: 600;
}

.vision-greeting-field {
  min-width: 0;
}

.vision-greeting-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 2px;
}

.vision-badge-loading {
  color: #9a5b00;
  background: #fff8e9;
}

.vision-badge-success {
  color: #087443;
  background: #effaf3;
}

.vision-badge-error {
  color: #9b2c2c;
  background: #fff1f1;
}

.camera-insight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.insight-card {
  min-height: 126px;
}

.insight-topline {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.insight-card strong {
  display: block;
  margin-top: 12px;
  font-size: 18px;
}

.insight-card .muted {
  font-size: 12px;
}

.camera-chat-panel {
  display: grid;
  gap: 10px;
}

.camera-chat-log {
  display: grid;
  gap: 8px;
  min-height: 96px;
  max-height: 250px;
  overflow: auto;
  padding: 4px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.chat-empty {
  align-self: center;
  padding: 18px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.camera-chat-message {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  max-width: 86%;
  padding: 8px 10px;
  border-radius: 8px;
  background: white;
  border: 1px solid var(--line);
}

.camera-chat-message.user {
  justify-self: end;
  background: #eef4ff;
  border-color: #cbdcfb;
}

.chat-role {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}

.camera-chat-message p {
  min-width: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.camera-chat-compose {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 8px;
}

.camera-chat-compose button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.insight-icon {
  width: 10px;
  height: 10px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  flex: 0 0 auto;
}

.face-icon {
  border-radius: 3px;
  border-color: #7c5ce6;
}

.wave-icon {
  border-radius: 2px;
  border-color: #d17a19;
}

.camera-settings-panel,
.greeting-settings-panel,
.event-panel {
  display: grid;
  gap: 10px;
}

.camera-settings-panel label,
.greeting-settings-panel label {
  color: #475467;
  font-size: 12px;
  font-weight: 600;
}

.camera-settings-panel input,
.camera-settings-panel select,
.greeting-settings-panel input,
.greeting-settings-panel select {
  background: #fbfcfe;
}

.field-hint,
.save-status {
  min-height: 18px;
  color: var(--muted);
  font-size: 12px;
  margin: 0;
}

.save-status {
  color: var(--green);
}

.hidden-field[hidden] {
  display: none;
}

.toggle-row {
  display: flex !important;
  align-items: center;
  gap: 8px;
  font-weight: 400 !important;
}

.toggle-row input {
  width: 16px;
  height: 16px;
  accent-color: var(--blue);
}

.switch {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.switch span {
  position: relative;
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: #cbd5e1;
  transition: background 160ms ease;
}

.switch span::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.25);
  transition: transform 160ms ease;
}

.switch input:checked + span {
  background: var(--green);
}

.switch input:checked + span::after {
  transform: translateX(16px);
}

.inline-state {
  min-height: 30px;
  color: var(--blue);
  border-color: #cbdcfb;
  background: #f2f6ff;
  font-size: 12px;
}

.inline-state.disabled {
  color: var(--muted);
  border-color: var(--line);
  background: #f8fafc;
}

.text-button {
  color: var(--muted);
  background: transparent;
  padding: 4px 0;
  font-size: 12px;
}

.text-button:hover {
  color: var(--blue);
}

.event-feed {
  max-height: 220px;
  overflow: auto;
}

.empty-events {
  margin: 0;
}

.event-item {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 9px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.event-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.event-item:last-child {
  padding-bottom: 0;
}

.event-time {
  color: var(--muted);
  font-size: 11px;
  padding-top: 2px;
}

.event-item strong {
  display: block;
  font-size: 12px;
}

.event-item p {
  color: var(--muted);
  font-size: 12px;
  margin-top: 3px;
}

@media (max-width: 900px) {
  body { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .metrics, .split, .workbench { grid-template-columns: 1fr; }
}

@media (max-width: 1100px) {
  .camera-layout {
    grid-template-columns: 1fr;
  }

  .camera-side-column {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .event-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  main { padding: 16px; }
  .auth-card { padding: 22px; }
  .auth-heading h2 { font-size: 22px; }
  .auth-heading { grid-template-columns: 1fr; }
  .trial-banner,
  .billing-summary {
    grid-template-columns: 1fr;
    display: grid;
  }
  .knowledge-toolbar,
  .knowledge-actions {
    align-items: stretch;
    flex-direction: column;
  }
  .knowledge-toolbar select,
  .file-picker,
  .knowledge-actions button {
    width: 100%;
  }
  .camera-chat-compose {
    grid-template-columns: 1fr 1fr;
  }
  .camera-chat-compose input {
    grid-column: 1 / -1;
  }
  .camera-header,
  .panel-heading {
    display: grid;
  }

  .camera-header-actions,
  .preview-actions {
    justify-content: flex-start;
  }

  .camera-insight-grid,
  .camera-side-column {
    grid-template-columns: 1fr;
  }

  .vision-analysis-layout,
  .vision-greeting-builder {
    grid-template-columns: 1fr;
  }

  .vision-greeting-actions {
    grid-column: 1;
  }

  .vision-greeting-actions {
    justify-content: stretch;
  }

  .vision-greeting-actions button {
    flex: 1 1 0;
  }

  .camera-stage {
    min-height: 210px;
  }

  .camera-preview-panel {
    padding: 12px;
  }
}