:root {
  --paper: #f6f1e4;
  --paper-deep: #ece3cf;
  --ink: #23201a;
  --muted: #6f6a5c;
  --lemon: #f4d03f;
  --lemon-deep: #d8b20e;
  --hazard: #e0522c;
  --olive: #6d7a3d;
  --graphite: #35342f;
  --line: #d8cfb8;
  --card: #fffdf5;
  --emergency: #c93a2b;
  --imminent: #d99a06;
  --normal: #4e8c4e;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(45, 40, 20, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background:
    linear-gradient(rgba(35, 32, 26, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 32, 26, 0.045) 1px, transparent 1px),
    radial-gradient(circle at 20% 8%, rgba(244, 208, 63, 0.28), transparent 28%),
    var(--paper);
  background-size: 22px 22px, 22px 22px, auto, auto;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

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

button {
  cursor: pointer;
}

a {
  color: inherit;
}

#app {
  min-height: 100vh;
}

.mono {
  font-family: ui-monospace, "Cascadia Mono", Consolas, "Courier New", monospace;
  font-variant-numeric: tabular-nums;
}

/* ---------- login ---------- */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(35, 32, 26, 0.12);
  padding: 28px 24px;
}

.login-card .brand-mark {
  font-size: 46px;
  line-height: 1;
}

.login-card h1 {
  margin: 10px 0 4px;
  font-size: 28px;
  letter-spacing: 0.04em;
}

.login-card .sub {
  color: var(--muted);
  margin: 0 0 22px;
}

/* ---------- shell ---------- */
.app-shell {
  max-width: 1080px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(246, 241, 228, 0.92);
  border-bottom: 2px solid var(--ink);
  backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.brand .lemon {
  font-size: 24px;
}

.brand .brand-name {
  font-size: 16px;
}

.store-box {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.store-box select {
  max-width: 132px;
  border: 1.5px solid var(--ink);
  background: var(--card);
  padding: 7px 8px;
  font-weight: 700;
}

.icon-btn {
  border: 1.5px solid var(--ink);
  background: var(--card);
  padding: 7px 9px;
  font-weight: 800;
}

.main {
  flex: 1;
  padding: 16px 14px 96px;
}

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  display: flex;
  background: var(--graphite);
  border-top: 2px solid var(--ink);
  padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav button {
  flex: 1;
  background: transparent;
  border: 0;
  color: #efe9d8;
  padding: 9px 4px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  font-size: 12px;
  opacity: 0.72;
}

.bottom-nav button .nav-ico {
  font-size: 19px;
  line-height: 1;
}

.bottom-nav button.active {
  color: var(--lemon);
  opacity: 1;
  background: rgba(244, 208, 63, 0.1);
}

/* ---------- generic ---------- */
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.page-head h2 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.03em;
}

.page-head .sub {
  color: var(--muted);
  font-size: 13px;
}

.card {
  background: var(--card);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 rgba(35, 32, 26, 0.08);
  padding: 14px;
  margin-bottom: 14px;
}

.card-title {
  margin: 0 0 10px;
  font-size: 15px;
  letter-spacing: 0.03em;
}

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

.empty {
  padding: 34px 16px;
  text-align: center;
  color: var(--muted);
  border: 1.5px dashed var(--line);
  background: rgba(255, 253, 245, 0.55);
}

.field {
  margin-bottom: 13px;
}

.field label {
  display: block;
  margin-bottom: 5px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1.5px solid var(--ink);
  background: #fff;
  padding: 9px 10px;
  color: var(--ink);
}

.field textarea {
  min-height: 72px;
  resize: vertical;
}

.field .hint {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1.5px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  padding: 10px 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: 2px 2px 0 rgba(35, 32, 26, 0.18);
  text-decoration: none;
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: none;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--lemon);
}

.btn-danger {
  background: #fbe4dc;
  color: #8d2a17;
}

.btn-ghost {
  background: transparent;
  box-shadow: none;
}

.btn-small {
  padding: 6px 9px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.quick-actions .btn {
  padding: 14px 10px;
  font-size: 16px;
}

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

.stat {
  background: var(--card);
  border: 1.5px solid var(--ink);
  padding: 12px;
  min-height: 78px;
}

.stat .label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.stat .value {
  font-size: 24px;
  font-weight: 900;
  margin-top: 6px;
}

.stat .value.small {
  font-size: 18px;
}

/* ---------- alerts ---------- */
.alert-list {
  display: grid;
  gap: 10px;
}

.alert-card {
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-left: 7px solid var(--normal);
  padding: 13px;
  display: grid;
  gap: 8px;
}

.alert-card.level-emergency {
  border-left-color: var(--emergency);
}

.alert-card.level-imminent {
  border-left-color: var(--imminent);
}

.alert-card.level-normal {
  border-left-color: var(--normal);
}

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

.alert-name {
  font-size: 18px;
  font-weight: 900;
}

.alert-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  font-size: 13px;
}

.alert-facts .fact {
  border-top: 1px dashed var(--line);
  padding-top: 6px;
}

.alert-facts .fact .k {
  color: var(--muted);
  font-size: 11px;
}

.alert-facts .fact .v {
  font-weight: 800;
}

.alert-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ---------- badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 900;
  border: 1.5px solid currentColor;
  white-space: nowrap;
}

.badge-emergency {
  color: #fff;
  background: var(--emergency);
  border-color: var(--emergency);
}

.badge-imminent {
  color: #3d2a00;
  background: var(--imminent);
  border-color: #b47d02;
}

.badge-normal {
  color: #103c12;
  background: #cfe7cf;
  border-color: #4e8c4e;
}

.tag {
  display: inline-block;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  padding: 1px 7px;
  font-size: 12px;
  font-weight: 700;
}

/* ---------- inventory ---------- */
.filter-bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.filter-bar input,
.filter-bar select {
  border: 1.5px solid var(--ink);
  padding: 9px 10px;
  background: var(--card);
}

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

.inventory-row {
  background: var(--card);
  border: 1.5px solid var(--ink);
  padding: 12px;
  display: grid;
  gap: 8px;
  cursor: pointer;
}

.inv-row-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.inv-name {
  font-weight: 900;
  font-size: 16px;
}

.inv-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  font-size: 13px;
}

.inv-metrics .m .k {
  color: var(--muted);
  font-size: 11px;
}

.inv-metrics .m .v {
  font-weight: 800;
}

/* ---------- list ---------- */
.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}

.tab {
  border: 1.5px solid var(--ink);
  border-bottom: 0;
  background: var(--paper-deep);
  padding: 8px 14px;
  font-weight: 800;
}

.tab.active {
  background: var(--lemon);
}

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

.list-item {
  background: var(--card);
  border: 1.5px solid var(--ink);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.list-item .li-title {
  font-weight: 900;
}

.list-item .li-meta {
  color: var(--muted);
  font-size: 13px;
}

.li-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.check-row input {
  width: 20px;
  height: 20px;
  accent-color: var(--lemon-deep);
}

/* ---------- settings ---------- */
.section-title {
  margin: 24px 0 10px;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid var(--ink);
  padding-bottom: 5px;
}

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

/* ---------- modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(25, 23, 17, 0.62);
  display: grid;
  place-items: center;
  padding: 18px;
  overflow-y: auto;
}

.modal {
  width: 100%;
  max-width: 520px;
  background: var(--card);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.22);
  max-height: calc(100vh - 36px);
  overflow-y: auto;
}

.modal-head {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--lemon);
  border-bottom: 2px solid var(--ink);
}

.modal-head h2 {
  margin: 0;
  font-size: 17px;
  letter-spacing: 0.04em;
}

.modal-close {
  border: 1.5px solid var(--ink);
  background: var(--card);
  width: 30px;
  height: 30px;
  font-weight: 900;
}

.modal-body {
  padding: 16px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 0 16px 16px;
  flex-wrap: wrap;
}

/* ---------- toast ---------- */
#toast-root {
  position: fixed;
  left: 50%;
  bottom: 82px;
  transform: translateX(-50%);
  z-index: 100;
  display: grid;
  gap: 8px;
  width: min(92vw, 440px);
}

.toast {
  background: var(--graphite);
  color: #fff;
  border: 1.5px solid var(--ink);
  padding: 11px 13px;
  box-shadow: var(--shadow);
  font-weight: 700;
}

.toast.error {
  background: var(--emergency);
}

/* ---------- desktop ---------- */
@media (min-width: 720px) {
  .main {
    padding: 22px 24px 40px;
  }

  .bottom-nav {
    position: sticky;
    bottom: auto;
    top: 58px;
    margin: 0 24px;
    width: auto;
    border: 1.5px solid var(--ink);
    background: var(--graphite);
    justify-content: flex-start;
  }

  .bottom-nav button {
    flex: 0 0 auto;
    flex-direction: row;
    gap: 6px;
    padding: 12px 20px;
    font-size: 14px;
  }

  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .filter-bar {
    grid-template-columns: 1fr 180px 180px;
  }

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

  .form-grid .span-2 {
    grid-column: span 2;
  }

  .inventory-row {
    grid-template-columns: 1fr 260px auto;
    align-items: center;
  }

  .inventory-row .inv-metrics {
    grid-template-columns: repeat(3, 1fr);
  }
}