:root {
  color-scheme: light;
  --bg: #f2f4f7;
  --panel: #ffffff;
  --panel-alt: #f8fafc;
  --border: #d8dee6;
  --border-strong: #b9c4d0;
  --text: #17212b;
  --muted: #5d6a78;
  --accent: #135fbd;
  --accent-soft: #e8f0fb;
  --success: #0f6b3d;
  --success-soft: #e6f4ec;
  --error: #a2392b;
  --error-soft: #f9e8e5;
  --warning: #925f12;
  --warning-soft: #f5eddf;
  --shadow: 0 8px 24px rgba(23, 33, 43, 0.05);
  --radius-lg: 10px;
  --radius-md: 8px;
  --radius-sm: 6px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Avenir Next", "IBM Plex Sans", "Segoe UI", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
}

button,
select,
summary,
input[type="checkbox"] {
  cursor: pointer;
}

.page-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 16px 14px 32px;
}

.hero,
.panel,
.device-card {
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
}

.hero-copy-block {
  min-width: 0;
}

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

.helper-callout {
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
}

.helper-callout strong {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.helper-callout span {
  font-size: 12px;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
p,
h3 {
  margin: 0;
}

h1 {
  font-size: clamp(23px, 4.4vw, 30px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 18px;
  line-height: 1.1;
}

h3 {
  font-size: 15px;
  line-height: 1.15;
}

.hero-copy,
.section-copy,
.status-text,
.empty-state,
.summary-note,
.release-note,
.meta-value,
.field-hint,
.card-status,
.save-note,
.open-copy,
.pill,
.filter-hint {
  font-size: 13px;
  line-height: 1.45;
}

.hero-copy,
.section-copy,
.summary-note,
.release-note,
.meta-value,
.field-hint,
.save-note,
.open-copy,
.filter-hint {
  color: var(--muted);
}

.hero-copy {
  margin-top: 8px;
  max-width: 56ch;
}

.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.admin-tabs {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tab-button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
}

.tab-button.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.filter-toolbar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, max-content)) minmax(0, 1fr);
  gap: 8px;
  align-items: stretch;
  margin-bottom: 14px;
}

.filter-chip {
  display: grid;
  gap: 2px;
  min-width: 88px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-sm);
  text-align: left;
}

.filter-chip.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.filter-chip-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.filter-chip.active .filter-chip-label {
  color: var(--accent);
}

.filter-chip-value {
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}

.filter-hint {
  align-self: center;
  justify-self: end;
  white-space: nowrap;
}

.panel {
  padding: 14px;
  border-radius: var(--radius-lg);
}

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.section-subheader {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.section-copy {
  margin-top: 6px;
}

.status-text {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel-alt);
  white-space: nowrap;
}

.status-text.success {
  color: var(--success);
  background: var(--success-soft);
  border-color: #cae5d5;
}

.status-text.error {
  color: var(--error);
  background: var(--error-soft);
  border-color: #ecc9c2;
}

.device-list {
  display: grid;
  gap: 10px;
}

.release-library-shell {
  display: grid;
  gap: 12px;
  margin-bottom: 14px;
}

.compact-section-header {
  margin-bottom: 0;
}

.release-storage-list {
  display: grid;
  gap: 10px;
}

.release-storage-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.release-storage-card {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}

.release-storage-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.release-storage-heading {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.release-storage-name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  word-break: break-word;
}

.release-storage-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.release-storage-summary {
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}

.release-storage-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 2px;
}

.release-storage-action-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.device-card {
  overflow: hidden;
  border-radius: var(--radius-md);
}

.device-details {
  width: 100%;
}

.device-details summary {
  list-style: none;
}

.device-details summary::-webkit-details-marker {
  display: none;
}

.device-summary {
  display: grid;
  gap: 10px;
  padding: 12px 14px;
}

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

.device-title-block {
  min-width: 0;
}

.device-label {
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.device-code {
  display: inline-flex;
  max-width: 100%;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  background: #f4f7fa;
  border: 1px solid var(--border);
  font-family: "IBM Plex Mono", "Fira Code", monospace;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.open-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.open-copy {
  font-size: 12px;
  font-weight: 600;
}

.summary-chevron,
.analytics-chevron {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
  color: var(--accent);
  transition: transform 160ms ease, background-color 160ms ease;
}

.device-details[open] > .device-summary .summary-chevron {
  transform: rotate(180deg);
  background: var(--accent-soft);
}

.summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(210px, 250px);
  gap: 10px;
  align-items: start;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 8px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.pill.positive {
  color: var(--success);
  background: var(--success-soft);
  border-color: #cae5d5;
}

.pill.accent {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: #c8d9f4;
}

.pill.warning {
  color: var(--warning);
  background: var(--warning-soft);
  border-color: #e8d9bc;
}

.pill.muted {
  color: var(--muted);
}

.release-snapshot {
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
}

.release-label,
.meta-label {
  margin-bottom: 5px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.release-title,
.meta-title {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.device-panel {
  display: grid;
  gap: 12px;
  padding: 0 14px 14px;
}

.settings-grid {
  display: grid;
  gap: 10px;
}

.field-shell,
.toggle-card,
.meta-card {
  padding: 12px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
}

.field-shell {
  display: grid;
  gap: 6px;
}

.field-label,
.toggle-title {
  font-size: 13px;
  font-weight: 700;
}

.toggle-grid,
.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.toggle-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: center;
}

.toggle-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-visual {
  width: 42px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
  background: #ced7e2;
  border-radius: 999px;
  transition: background-color 160ms ease;
}

.toggle-visual::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(23, 33, 43, 0.18);
  transition: transform 160ms ease;
}

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

.toggle-input:checked + .toggle-visual::after {
  transform: translateX(18px);
}

.toggle-hint {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

select {
  width: 100%;
  min-height: 42px;
  padding: 9px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text);
}

input[type="text"],
input[type="file"],
textarea {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text);
}

input[type="file"] {
  min-height: 42px;
}

textarea {
  min-height: 104px;
  resize: vertical;
}

select:focus,
input[type="text"]:focus,
textarea:focus,
button:focus-visible,
summary:focus-visible,
input:focus-visible + .toggle-visual,
.filter-chip:focus-visible,
.tab-button:focus-visible {
  outline: 2px solid rgba(19, 95, 189, 0.22);
  outline-offset: 2px;
}

.device-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.action-copy {
  display: grid;
  gap: 3px;
}

.card-status {
  color: var(--muted);
}

.card-status.pending {
  color: var(--warning);
}

.card-status.success {
  color: var(--success);
}

.card-status.error {
  color: var(--error);
}

.secondary-button,
.save-button,
.danger-button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text);
  font-weight: 700;
}

.secondary-link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.danger-button {
  border-color: #d7b9b3;
  background: #fff7f5;
  color: var(--error);
}

.save-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.secondary-button:hover,
.danger-button:hover {
  background: var(--panel-alt);
}

.danger-button:hover {
  background: #fcebe7;
}

.save-button:hover {
  filter: brightness(0.94);
}

.save-button:disabled,
.danger-button:disabled {
  background: #d8dee6;
  border-color: #d8dee6;
  color: #66717f;
  cursor: default;
}

.disabled-link {
  pointer-events: none;
  opacity: 0.55;
}

.empty-state {
  padding: 22px 14px;
  border: 1px dashed var(--border-strong);
  background: var(--panel-alt);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--muted);
}

.create-device-form {
  display: grid;
  gap: 12px;
}

.create-device-details {
  display: grid;
  gap: 12px;
}

.create-device-details summary {
  list-style: none;
}

.create-device-details summary::-webkit-details-marker {
  display: none;
}

.create-device-summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
}

.create-device-details[open] .summary-chevron {
  transform: rotate(180deg);
  background: var(--accent-soft);
}

.create-device-intro {
  margin-top: 10px;
}

.create-device-inline {
  margin-bottom: 14px;
  padding: 12px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-md);
}

.create-grid {
  display: grid;
  margin-top: 10px;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.release-upload-grid {
  margin-top: 0;
}

.create-description-field,
.device-description-field {
  grid-column: 1 / -1;
}

.create-helper-callout {
  align-items: start;
}

.create-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.analytics-dashboard-shell {
  display: grid;
  gap: 10px;
}

.statistics-device-section {
  display: grid;
  gap: 10px;
  margin-top: 4px;
}

.statistics-device-summary {
  border-bottom: 1px solid var(--border);
}

.device-analytics-shell {
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.device-analytics-toggle {
  display: flex;
  width: 100%;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  text-align: left;
}

.device-analytics-content {
  display: grid;
  gap: 10px;
  padding: 0 12px 12px;
  border-top: 1px solid var(--border);
}

.device-analytics-content[hidden] {
  display: none;
}

.device-analytics-shell.expanded .analytics-chevron,
.analytics-section.expanded .analytics-chevron {
  transform: rotate(180deg);
  background: var(--accent-soft);
}

.analytics-open-indicator {
  align-self: center;
}

.device-analytics-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding-top: 12px;
}

.device-analytics-heading {
  display: grid;
  gap: 4px;
}

.device-analytics-title {
  font-size: 14px;
  font-weight: 700;
}

.device-analytics-note {
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}

.device-analytics-body {
  display: grid;
  gap: 10px;
}

.analytics-summary-grid {
  display: grid;
  gap: 10px;
}

.analytics-summary-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-bottom: 10px;
}

.analytics-section-stack {
  display: grid;
  gap: 8px;
}

.analytics-section {
  min-width: 0;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.analytics-section-toggle {
  display: flex;
  width: 100%;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  text-align: left;
}

.analytics-section-heading {
  display: grid;
  gap: 4px;
}

.analytics-section-title {
  margin: 0;
  font-size: 14px;
  line-height: 1.2;
}

.analytics-section-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}

.analytics-section-content {
  padding: 0 12px 12px;
  border-top: 1px solid var(--border);
}

.analytics-section-content[hidden] {
  display: none;
}

.analytics-card {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  border-radius: var(--radius-md);
}

.analytics-card h3 {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.2;
}

.analytics-summary-card {
  display: grid;
  gap: 3px;
}

.analytics-summary-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.analytics-summary-value {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
}

.analytics-summary-note,
.analytics-item-note,
.analytics-empty,
.prompt-meta,
.prompt-text {
  font-size: 12px;
  line-height: 1.45;
  color: var(--muted);
}

.analytics-list {
  display: grid;
  gap: 8px;
}

.analytics-item {
  display: grid;
  gap: 3px;
  padding: 10px;
  border: 1px solid var(--border);
  background: #ffffff;
  border-radius: var(--radius-sm);
}

.analytics-item-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.analytics-item-title,
.prompt-title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
}

.analytics-item-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}

.session-tag-row,
.prompt-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.prompt-item {
  display: grid;
  gap: 6px;
}

.prompt-text {
  padding: 8px 10px;
  border: 1px solid var(--border);
  background: #ffffff;
  border-radius: var(--radius-sm);
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt-status {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.prompt-status.success {
  color: var(--success);
  background: var(--success-soft);
  border-color: #cae5d5;
}

.prompt-status.error {
  color: var(--error);
  background: var(--error-soft);
  border-color: #ecc9c2;
}

@media (max-width: 860px) {
  .page-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .hero {
    flex-direction: column;
    align-items: stretch;
  }

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

  .filter-toolbar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .filter-hint {
    grid-column: 1 / -1;
    justify-self: start;
    white-space: normal;
  }

  .section-header {
    flex-direction: column;
  }

  .device-analytics-toggle {
    flex-direction: column;
  }

  .analytics-open-indicator {
    align-self: flex-end;
  }

  .device-analytics-header {
    flex-direction: column;
  }

  .status-text {
    white-space: normal;
  }

  .create-grid,
  .summary-grid,
  .toggle-grid,
  .meta-grid,
  .analytics-summary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .page-shell {
    padding: 12px 10px 24px;
  }

  .hero,
  .panel {
    padding: 12px;
  }

  .admin-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-toolbar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-actions {
    width: 100%;
  }

  .open-copy {
    display: none;
  }

  .device-summary,
  .device-panel {
    padding-inline: 12px;
  }

  .device-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .create-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .release-storage-actions,
  .release-storage-action-row {
    flex-direction: column;
    align-items: stretch;
  }

  .secondary-button,
  .save-button,
  .danger-button {
    width: 100%;
  }
}

/* --- Firebase Authentication UI --- */
.login-overlay-shell {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  display: grid;
  gap: 16px;
}

.login-copy {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

.login-error-text {
  font-size: 13px;
  color: var(--error);
  margin: 0;
}

.user-profile-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.user-email {
  font-weight: 600;
}

.logout-button {
  margin-left: 4px;
  min-height: 32px !important;
  padding: 0 10px !important;
  font-size: 12px;
}

@media (max-width: 860px) {
  .user-profile-box {
    margin-top: 8px;
    width: 100%;
    justify-content: space-between;
  }
}