:root {
  --red: #ff2d55;
  --red-deep: #b91c1c;
  --orange: #ff8a00;
  --yellow: #ffa700;
  --violet: #8b5cf6;
  --green: #00b86b;
  --blue: #1f6f8b;
  --black: #191919;
  --ink: #242424;
  --muted: rgba(36, 36, 36, 0.62);
  --muted-soft: rgba(36, 36, 36, 0.44);
  --line: rgba(25, 25, 25, 0.12);
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.96);
  --surface: #ffffff;
  --wash: #f5f7fb;
  --shadow: 0 20px 70px rgba(25, 25, 25, 0.12);
  --radius: 8px;
  --content-max: 1520px;
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  --ink: #f4f4f5;
  --muted: rgba(244, 244, 245, 0.68);
  --muted-soft: rgba(244, 244, 245, 0.44);
  --line: rgba(244, 244, 245, 0.13);
  --panel: rgba(24, 24, 27, 0.78);
  --panel-strong: rgba(24, 24, 27, 0.96);
  --surface: #111113;
  --wash: #09090b;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.34);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-height: 100%;
  background: var(--surface);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(120deg, rgba(227, 47, 32, 0.06), transparent 22rem),
    linear-gradient(300deg, rgba(31, 111, 139, 0.07), transparent 30rem),
    var(--surface);
  overflow-x: hidden;
}

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

button {
  cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  padding: 0.78rem 0.82rem;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

td {
  border-top: 1px solid var(--line);
  color: color-mix(in srgb, var(--ink) 84%, transparent);
}

.number {
  text-align: right;
}

.login-screen {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 1.2rem;
}

.login-panel {
  display: grid;
  width: min(100%, 28rem);
  gap: 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.login-panel h1 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.4rem);
}

.login-panel label,
.field,
.select-field {
  display: grid;
  gap: 0.38rem;
}

.login-panel label span,
.field span,
.select-field span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid color-mix(in srgb, var(--ink) 16%, transparent);
  border-radius: var(--radius);
  padding: 0.74rem 0.82rem;
  color: var(--ink);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  outline: none;
}

textarea {
  min-height: 8.5rem;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(227, 47, 32, 0.58);
  box-shadow: 0 0 0 3px rgba(227, 47, 32, 0.12);
}

.app-shell {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  gap: 1.1rem;
  min-height: 100vh;
  padding: 1.1rem;
}

.app-shell.home-mode {
  grid-template-columns: minmax(0, 1fr);
}

.app-shell.home-mode .sidebar,
.app-shell.home-mode .mobile-nav-toggle {
  display: none;
}

.app-shell.home-mode .content {
  width: min(100%, var(--content-max));
  margin: 0 auto;
}

.glass-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--surface) 94%, transparent), color-mix(in srgb, var(--wash) 74%, transparent)),
    var(--panel);
  box-shadow: var(--shadow);
}

.sidebar {
  position: sticky;
  top: 1.1rem;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 2.2rem);
  overflow-y: auto;
  padding: 0.95rem;
}

.brand-row,
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-lockup {
  padding: 0.25rem 0.2rem 1.25rem;
}

.brand-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  overflow: hidden;
  place-items: center;
  border: 2px solid #ffffff;
  border-radius: 999px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  box-shadow: 0 12px 28px rgba(227, 47, 32, 0.24);
  font-weight: 900;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-lockup strong,
.brand-lockup small,
.brand-row strong,
.brand-row small {
  display: block;
}

.brand-lockup strong,
.brand-row strong {
  font-size: 1.24rem;
  font-weight: 900;
}

.brand-lockup small,
.brand-row small {
  color: var(--muted);
  font-size: 0.82rem;
}

.nav-list {
  display: grid;
  gap: 0.64rem;
}

.nav-group {
  display: grid;
  gap: 0.34rem;
}

.nav-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.2rem 0.32rem;
  color: var(--muted-soft);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  list-style: none;
  text-transform: uppercase;
  cursor: pointer;
}

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

.nav-group summary::after {
  content: "⌄";
}

.nav-group:not([open]) summary::after {
  transform: rotate(-90deg);
}

.nav-group:not([open]) > .nav-item {
  display: none;
}

.nav-item {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 0.55rem;
  border: 0;
  border-radius: var(--radius);
  padding: 0.72rem 0.8rem;
  color: color-mix(in srgb, var(--ink) 66%, transparent);
  background: transparent;
  text-align: left;
  transition: 160ms ease;
}

.nav-item svg,
button svg,
.tile-icon svg,
.status-badge svg {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.nav-item:hover,
.nav-item.active {
  color: var(--ink);
  background: rgba(227, 47, 32, 0.08);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 1rem;
}

.sidebar-note {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  border-top: 1px solid var(--line);
  padding: 0.9rem 0.15rem 0.2rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.status-dot {
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(20, 132, 99, 0.12);
}

.content {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 1rem;
  min-width: 0;
  max-width: var(--content-max);
}

.topbar {
  position: sticky;
  z-index: 5;
  top: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.86rem 1rem;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: 0 14px 44px rgba(25, 25, 25, 0.08);
  backdrop-filter: blur(18px);
}

.topbar-title {
  min-width: 0;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.35rem, 2.4vw, 2.2rem);
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.eyebrow {
  margin: 0 0 0.22rem;
  color: var(--red-deep);
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.view {
  display: grid;
  gap: 1rem;
  padding-bottom: 1.2rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.section-actions-only {
  align-items: center;
}

.section-heading h2,
.panel-header h3 {
  margin: 0;
}

.section-heading h2 {
  font-size: clamp(1.5rem, 2.7vw, 2.35rem);
}

.panel-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--panel-strong);
  box-shadow: 0 14px 44px rgba(25, 25, 25, 0.07);
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(22rem, 0.85fr);
  gap: 1rem;
}

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

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.metric-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.95rem;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.metric-card strong {
  display: block;
  margin-top: 0.24rem;
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  line-height: 1;
}

.metric-card span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.home-tile {
  display: grid;
  min-height: 13rem;
  align-content: space-between;
  gap: 1rem;
  border: 2px solid var(--tile-color);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--ink);
  background: var(--panel-strong);
  box-shadow: 0 14px 38px color-mix(in srgb, var(--tile-color) 18%, transparent);
  text-align: left;
  transition: 160ms ease;
}

.home-tile:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 44px color-mix(in srgb, var(--tile-color) 28%, transparent);
}

.home-tile:disabled {
  cursor: not-allowed;
}

.tile-icon {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border: 1.5px solid var(--tile-color);
  border-radius: 999px;
  color: var(--tile-color);
  background: color-mix(in srgb, var(--tile-color) 10%, transparent);
}

.tile-icon svg {
  width: 1.35rem;
  height: 1.35rem;
}

.home-tile strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
}

.home-tile span:not(.tile-icon) {
  color: var(--muted);
  font-size: 0.9rem;
}

.button-row,
.chip-row,
.tab-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.primary-action,
.ghost-action,
.danger-action,
.tab-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.68rem 0.86rem;
  font-weight: 850;
  text-decoration: none;
  transition: 160ms ease;
}

.primary-action {
  color: #ffffff;
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  box-shadow: 0 12px 30px rgba(227, 47, 32, 0.22);
}

.primary-action:hover {
  transform: translateY(-1px);
}

.ghost-action,
.tab-action {
  border-color: color-mix(in srgb, var(--ink) 14%, transparent);
  color: var(--ink);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.tab-action.active {
  border-color: rgba(227, 47, 32, 0.28);
  color: var(--red-deep);
  background: rgba(227, 47, 32, 0.08);
}

.danger-action {
  border-color: rgba(227, 47, 32, 0.26);
  color: var(--red-deep);
  background: rgba(227, 47, 32, 0.08);
}

.table-shell {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 74%, transparent);
}

.table-shell table {
  min-width: 48rem;
}

.clickable-row {
  cursor: pointer;
}

.clickable-row:hover td {
  background: rgba(227, 47, 32, 0.04);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.82rem;
}

.form-grid .wide,
.wide {
  grid-column: 1 / -1;
}

.readonly-grid,
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.detail-item {
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

.detail-item span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.detail-item strong {
  display: block;
  margin-top: 0.2rem;
}

.photo-gallery,
.photo-manager {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.photo-gallery figure,
.photo-manager-item {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.55rem;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.photo-gallery img,
.photo-manager img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: calc(var(--radius) - 2px);
  object-fit: cover;
  background: var(--wash);
}

.photo-gallery figcaption,
.photo-manager-item span {
  min-width: 0;
  color: var(--muted);
  font-size: 0.8rem;
  overflow-wrap: anywhere;
}

.photo-empty {
  margin-bottom: 1rem;
}

.form-error {
  min-height: 1.1rem;
  margin: 0;
  color: var(--red-deep);
  font-size: 0.86rem;
  font-weight: 700;
}

.status-pill,
.role-pill,
.hash-pill,
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.36rem;
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  border-radius: 999px;
  padding: 0.28rem 0.56rem;
  color: var(--ink);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  font-size: 0.76rem;
  font-weight: 800;
  white-space: nowrap;
}

.status-badge.pending,
.status-pill.not_borrowable {
  border-color: rgba(112, 72, 232, 0.25);
  color: var(--violet);
  background: rgba(112, 72, 232, 0.08);
}

.status-badge.future,
.status-badge.returned,
.status-pill.active {
  border-color: rgba(20, 132, 99, 0.25);
  color: var(--green);
  background: rgba(20, 132, 99, 0.08);
}

.status-badge.current,
.status-pill.borrowed {
  border-color: rgba(217, 119, 6, 0.3);
  color: var(--orange);
  background: rgba(217, 119, 6, 0.09);
}

.status-badge.overdue,
.status-badge.rejected,
.status-pill.transferred,
.status-pill.sold {
  border-color: rgba(227, 47, 32, 0.25);
  color: var(--red-deep);
  background: rgba(227, 47, 32, 0.08);
}

.status-badge svg {
  width: 0.9rem;
  height: 0.9rem;
}

.choice-panel {
  display: grid;
  gap: 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
}

.choice-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
}

.choice-row input {
  width: auto;
}

.empty-state {
  border: 1px dashed color-mix(in srgb, var(--ink) 22%, transparent);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 58%, transparent);
}

.toast-stack {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 50;
  display: grid;
  gap: 0.6rem;
}

.toast {
  min-width: min(24rem, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.82rem 0.9rem;
  color: var(--ink);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.theme-toggle {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  width: 9.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.18rem;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.theme-toggle::before {
  position: absolute;
  inset: 0.18rem auto 0.18rem 0.18rem;
  width: calc(50% - 0.18rem);
  border-radius: 999px;
  background: var(--panel-strong);
  box-shadow: 0 8px 18px rgba(25, 25, 25, 0.12);
  content: "";
  transition: 180ms ease;
}

.theme-toggle[aria-pressed="true"]::before {
  transform: translateX(100%);
}

.theme-toggle-option {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.32rem;
  min-height: 2rem;
  font-size: 0.78rem;
  font-weight: 850;
}

.theme-toggle-option svg {
  width: 0.92rem;
  height: 0.92rem;
}

.mobile-nav-toggle,
.mobile-nav-backdrop {
  display: none;
}

@media (max-width: 1120px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    z-index: 30;
    inset: 0 auto 0 0;
    width: min(88vw, 20rem);
    height: 100vh;
    border-radius: 0;
    transform: translateX(-105%);
    transition: 180ms ease;
  }

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

  .mobile-nav-toggle {
    display: inline-grid;
    gap: 0.2rem;
    width: 2.4rem;
    height: 2.4rem;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel-strong);
  }

  .mobile-nav-toggle span {
    display: block;
    width: 1.15rem;
    height: 2px;
    border-radius: 999px;
    background: var(--ink);
  }

  .mobile-nav-backdrop {
    position: fixed;
    z-index: 20;
    inset: 0;
    display: block;
    border: 0;
    background: rgba(0, 0, 0, 0.34);
  }

  .topbar {
    align-items: start;
  }

  .topbar-actions {
    justify-content: flex-start;
  }

  .tile-grid,
  .metric-grid,
  .grid-3,
  .photo-gallery,
  .photo-manager {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 0.7rem;
  }

  .topbar,
  .section-heading,
  .panel-header {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions,
  .button-row,
  .tab-row {
    align-items: stretch;
  }

  .topbar-actions > *,
  .button-row > *,
  .tab-row > * {
    width: 100%;
  }

  .tile-grid,
  .metric-grid,
  .grid-3,
  .form-grid,
  .readonly-grid,
  .detail-grid,
  .photo-gallery,
  .photo-manager {
    grid-template-columns: 1fr;
  }

  .home-tile {
    min-height: 10.5rem;
  }

  .theme-toggle {
    width: 100%;
  }
}