/* CargoFlow Aviation Ledger — shared visual and interaction foundation. */
:root {
  color-scheme: light;
  --al-paper: #f1f0e9;
  --al-paper-deep: #e7e7df;
  --al-surface: #fbfaf6;
  --al-surface-raised: #ffffff;
  --al-surface-muted: #e9ebe5;
  --al-ink: #17201d;
  --al-ink-soft: #35413c;
  --al-muted: #5d6863;
  --al-rule: #cbd0c9;
  --al-rule-strong: #aeb7af;
  --al-green: #1f5945;
  --al-green-strong: #174333;
  --al-green-soft: #dce9e1;
  --al-rust: #963f31;
  --al-rust-soft: #f2dfda;
  --al-amber: #806019;
  --al-amber-soft: #eee5cc;
  --al-blue: #315f75;
  --al-blue-soft: #dce7ec;
  --al-focus: #167558;
  --al-font-ui: "Saira", "Segoe UI", sans-serif;
  --al-font-display: "Saira Semi Condensed", "Arial Narrow", sans-serif;
  --al-font-data: "IBM Plex Mono", ui-monospace, monospace;
  --al-space-1: 4px;
  --al-space-2: 8px;
  --al-space-3: 12px;
  --al-space-4: 16px;
  --al-space-5: 20px;
  --al-space-6: 24px;
  --al-space-8: 32px;
  --al-space-10: 40px;
  --al-space-12: 48px;
  --al-radius-sm: 6px;
  --al-radius-md: 10px;
  --al-radius-lg: 14px;
  --al-shadow-overlay: 0 18px 50px rgb(23 32 29 / 18%);
  --al-shadow-menu: 0 10px 28px rgb(23 32 29 / 14%);
  --al-duration-fast: 140ms;
  --al-duration: 220ms;
  --al-ease-out: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  accent-color: var(--al-green);
  scroll-behavior: smooth;
  scrollbar-color: var(--al-rule-strong) var(--al-paper);
}

body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--al-green); color: #fff; }
::placeholder { color: #737d78; opacity: 1; }

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--al-focus) 62%, white);
  outline-offset: 2px;
}

:where(button, input, select, textarea) { font: inherit; }
:where(button, [role="button"]) { -webkit-tap-highlight-color: transparent; }
:where(a) { text-underline-offset: .2em; text-decoration-thickness: 1px; }
:where([data-value], .al-data, time) { font-variant-numeric: tabular-nums; }

[hidden],
.al-overlay[hidden],
.al-drawer[hidden],
.al-menu[hidden],
.al-toast[hidden],
.al-disclosure-panel[hidden] { display: none !important; }

.al-skip-link {
  position: fixed;
  z-index: 10000;
  top: var(--al-space-3);
  left: var(--al-space-3);
  transform: translateY(-160%);
  border-radius: var(--al-radius-sm);
  background: var(--al-ink);
  color: #fff;
  padding: 10px 14px;
  font-weight: 700;
  transition: transform var(--al-duration-fast) var(--al-ease-out);
}

.al-skip-link:focus { transform: translateY(0); }

.al-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.al-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--al-space-2);
  border: 1px solid var(--al-green);
  border-radius: var(--al-radius-sm);
  background: var(--al-green);
  color: #fff;
  padding: 9px 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--al-duration-fast) ease, border-color var(--al-duration-fast) ease, transform var(--al-duration-fast) var(--al-ease-out);
}

.al-button:hover { background: var(--al-green-strong); border-color: var(--al-green-strong); }
.al-button:active { transform: translateY(1px); }
.al-button:disabled, .al-button[aria-disabled="true"] { cursor: not-allowed; opacity: .55; transform: none; }
.al-button--secondary { background: var(--al-surface); border-color: var(--al-rule-strong); color: var(--al-ink); }
.al-button--secondary:hover { background: var(--al-surface-muted); border-color: var(--al-green); }
.al-button--quiet { background: transparent; border-color: transparent; color: var(--al-green-strong); }
.al-button--quiet:hover { background: var(--al-green-soft); border-color: transparent; }
.al-button--danger { background: var(--al-rust); border-color: var(--al-rust); }
.al-button--danger:hover { background: #743026; border-color: #743026; }
.al-button--compact { min-height: 36px; padding: 7px 11px; font-size: .875rem; }

.al-icon-button {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--al-rule);
  border-radius: var(--al-radius-sm);
  background: var(--al-surface);
  color: var(--al-ink);
  cursor: pointer;
}

.al-icon-button:hover { border-color: var(--al-green); background: var(--al-green-soft); }

.al-field { display: grid; gap: 6px; }
.al-field > label, .al-label { color: var(--al-ink-soft); font-size: .78rem; font-weight: 700; letter-spacing: .02em; }
.al-field :where(input, select, textarea), :where(input, select, textarea).al-control {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--al-rule-strong);
  border-radius: var(--al-radius-sm);
  background: var(--al-surface-raised);
  color: var(--al-ink);
  padding: 9px 11px;
  transition: border-color var(--al-duration-fast) ease, box-shadow var(--al-duration-fast) ease;
}

.al-field textarea, textarea.al-control { min-height: 104px; resize: vertical; }
.al-field :where(input, select, textarea):hover, .al-control:hover { border-color: #88948d; }
.al-field :where(input, select, textarea):focus, .al-control:focus { border-color: var(--al-green); box-shadow: 0 0 0 3px rgb(31 89 69 / 11%); }
.al-field [aria-invalid="true"], .al-control[aria-invalid="true"] { border-color: var(--al-rust); }
.al-help { color: var(--al-muted); font-size: .78rem; line-height: 1.45; }
.al-field-error { color: var(--al-rust); font-size: .8rem; font-weight: 600; }

.al-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--al-space-6);
  padding-bottom: var(--al-space-5);
  border-bottom: 1px solid var(--al-rule);
}

.al-page-header__copy { min-width: 0; }
.al-page-header h1, .al-page-header h2 { margin: 0; color: var(--al-ink); font-family: var(--al-font-display); letter-spacing: -.025em; line-height: 1.08; }
.al-page-header p { max-width: 70ch; margin: 7px 0 0; color: var(--al-muted); line-height: 1.5; }
.al-page-header__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--al-space-2); }

.al-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 26px;
  border: 1px solid var(--al-rule);
  border-radius: 999px;
  background: var(--al-surface-muted);
  color: var(--al-ink-soft);
  padding: 3px 9px;
  font-size: .72rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.al-status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.al-status--ok { background: var(--al-green-soft); border-color: #b6d0c0; color: var(--al-green-strong); }
.al-status--warning { background: var(--al-amber-soft); border-color: #d9c99b; color: #684c0e; }
.al-status--error { background: var(--al-rust-soft); border-color: #dcb9b0; color: #793126; }
.al-status--info { background: var(--al-blue-soft); border-color: #bed2dc; color: #244c60; }

.al-record-spine {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: ledger-step;
}

.al-record-spine li {
  counter-increment: ledger-step;
  position: relative;
  min-width: 0;
  padding: 32px 10px 0 0;
  color: var(--al-muted);
  font-size: .75rem;
  font-weight: 700;
}

.al-record-spine li::before {
  content: counter(ledger-step);
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--al-rule-strong);
  border-radius: 50%;
  background: var(--al-surface);
  color: var(--al-muted);
  font: 600 .68rem/1 var(--al-font-data);
}

.al-record-spine li::after { content: ""; position: absolute; top: 11px; left: 24px; right: 0; height: 1px; background: var(--al-rule); }
.al-record-spine li:last-child::after { display: none; }
.al-record-spine li[data-state="complete"], .al-record-spine li[data-state="current"] { color: var(--al-green-strong); }
.al-record-spine li[data-state="complete"]::before { background: var(--al-green); border-color: var(--al-green); color: #fff; }
.al-record-spine li[data-state="current"]::before { border: 2px solid var(--al-green); color: var(--al-green-strong); }
.al-record-spine li[data-state="blocked"] { color: var(--al-rust); }
.al-record-spine li[data-state="blocked"]::before { content: "!"; border-color: var(--al-rust); color: var(--al-rust); }

.al-table-wrap { overflow: auto; border: 1px solid var(--al-rule); border-radius: var(--al-radius-md); background: var(--al-surface); }
.al-table { width: 100%; border-collapse: collapse; color: var(--al-ink); font-size: .875rem; }
.al-table th { position: sticky; top: 0; z-index: 1; background: var(--al-surface-muted); color: var(--al-ink-soft); font-size: .7rem; letter-spacing: .045em; text-align: left; }
.al-table :where(th, td) { padding: 11px 13px; border-bottom: 1px solid var(--al-rule); vertical-align: middle; }
.al-table tbody tr:last-child td { border-bottom: 0; }
.al-table tbody tr:hover { background: rgb(31 89 69 / 4%); }

.al-empty, .al-error-state, .al-loading-state {
  display: grid;
  justify-items: start;
  gap: var(--al-space-2);
  min-height: 150px;
  align-content: center;
  border: 1px dashed var(--al-rule-strong);
  border-radius: var(--al-radius-md);
  padding: var(--al-space-6);
  background: var(--al-surface);
  color: var(--al-muted);
}

.al-empty h3, .al-error-state h3 { margin: 0; color: var(--al-ink); font-size: 1rem; }
.al-empty p, .al-error-state p { max-width: 58ch; margin: 0; line-height: 1.5; }
.al-error-state { border-style: solid; border-color: #dcb9b0; background: var(--al-rust-soft); }

.al-skeleton { border-radius: 4px; background: linear-gradient(100deg, var(--al-paper-deep) 20%, var(--al-surface) 40%, var(--al-paper-deep) 60%); background-size: 200% 100%; animation: al-shimmer 1.4s linear infinite; color: transparent !important; }
@keyframes al-shimmer { to { background-position-x: -200%; } }

.al-overlay {
  position: fixed;
  z-index: 900;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--al-space-4);
  background: rgb(23 32 29 / 54%);
}

.al-dialog {
  width: min(680px, 100%);
  max-height: min(86vh, 780px);
  overflow: auto;
  border: 0;
  border-radius: var(--al-radius-lg);
  background: var(--al-surface);
  color: var(--al-ink);
  box-shadow: var(--al-shadow-overlay);
}

.al-dialog__head, .al-dialog__body, .al-dialog__foot { padding: var(--al-space-5) var(--al-space-6); }
.al-dialog__head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--al-space-4); border-bottom: 1px solid var(--al-rule); }
.al-dialog__head h2, .al-dialog__head h3 { margin: 0; font-family: var(--al-font-display); }
.al-dialog__foot { display: flex; justify-content: flex-end; gap: var(--al-space-2); border-top: 1px solid var(--al-rule); }

.al-drawer {
  position: fixed;
  z-index: 950;
  inset-block: 0;
  right: 0;
  width: min(520px, 100%);
  overflow: auto;
  background: var(--al-surface);
  color: var(--al-ink);
  box-shadow: var(--al-shadow-overlay);
}

.al-menu {
  position: absolute;
  z-index: 1000;
  min-width: 200px;
  border: 1px solid var(--al-rule);
  border-radius: var(--al-radius-md);
  background: var(--al-surface-raised);
  padding: 6px;
  box-shadow: var(--al-shadow-menu);
}

.al-menu :where(button, a) { width: 100%; min-height: 38px; display: flex; align-items: center; border: 0; border-radius: 5px; background: transparent; color: var(--al-ink); padding: 8px 10px; text-align: left; text-decoration: none; cursor: pointer; }
.al-menu :where(button, a):hover { background: var(--al-green-soft); }

.al-toast-region {
  position: fixed;
  z-index: 1200;
  right: var(--al-space-5);
  bottom: var(--al-space-5);
  width: min(380px, calc(100vw - 32px));
  display: grid;
  gap: var(--al-space-2);
  pointer-events: none;
}

.al-toast {
  border: 1px solid var(--al-rule-strong);
  border-radius: var(--al-radius-md);
  background: var(--al-ink);
  color: #fff;
  padding: 12px 14px;
  box-shadow: var(--al-shadow-menu);
  font-size: .86rem;
  line-height: 1.45;
  pointer-events: auto;
  animation: al-toast-in var(--al-duration) var(--al-ease-out) both;
}

.al-toast[data-tone="error"] { background: #672a22; }
.al-toast[data-tone="success"] { background: var(--al-green-strong); }
@keyframes al-toast-in { from { opacity: 0; transform: translateY(8px); } }

.al-disclosure > summary { cursor: pointer; color: var(--al-ink); font-weight: 700; }
.al-disclosure > summary::marker { color: var(--al-green); }
.al-disclosure__body { padding-top: var(--al-space-4); }

body.al-scroll-locked { overflow: hidden; }

@media (max-width: 720px) {
  .al-page-header { display: grid; gap: var(--al-space-4); }
  .al-page-header__actions { justify-content: stretch; }
  .al-page-header__actions > * { flex: 1 1 auto; }
  .al-record-spine { grid-template-columns: 1fr; gap: 0; }
  .al-record-spine li { min-height: 52px; padding: 3px 0 18px 38px; }
  .al-record-spine li::after { top: 24px; bottom: 0; left: 11px; width: 1px; height: auto; }
  .al-dialog__head, .al-dialog__body, .al-dialog__foot { padding: var(--al-space-4); }
  .al-dialog__foot { flex-direction: column-reverse; }
  .al-dialog__foot > * { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}