/* Bánh Bao admin — colours and type follow the app (lib/core/theme.dart, docs/design). */
@font-face { font-family: "Baloo 2"; src: url(fonts/Baloo2.ttf) format("truetype"); font-weight: 400 800; font-display: swap; }
@font-face { font-family: "Be Vietnam Pro"; src: url(fonts/BeVietnamPro-Regular.ttf) format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Be Vietnam Pro"; src: url(fonts/BeVietnamPro-SemiBold.ttf) format("truetype"); font-weight: 600; font-display: swap; }

:root {
  --page: #eef4f0; --card: #ffffff; --card-2: #f6faf7; --ink: #1c2430; --muted: #5d6871; --line: #dde5e1;
  --jade: #13a37a; --jade-deep: #0b7658; --jade-soft: #dcf3ea;
  --saffron: #f2b134; --saffron-deep: #c98a12; --saffron-soft: #fdf0d3;
  --lantern: #e2484d; --lantern-deep: #b8353a; --lantern-soft: #fde4e3;
  --sky: #3f7fe8; --sky-soft: #e3edfd;
  --bun: #fff1d6; --bun-edge: #e2c48d; --face: #3b2a20; --blush: #f6a5a0;
  --link: #0b7658;
  --shadow: 0 10px 30px -18px rgba(20, 40, 30, .35);
  --font-display: "Baloo 2", "Be Vietnam Pro", system-ui, sans-serif;
  --font-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-han: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --r: 18px; --fast: .16s; --mid: .28s; --ease: cubic-bezier(.2, .9, .3, 1.2);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --page: #0f1518; --card: #1f2a31; --card-2: #182228; --ink: #e8eef0; --muted: #9aa7ae; --line: #2d3a42;
  --jade: #36c995; --jade-deep: #1d8a63; --jade-soft: #173a2f;
  --saffron: #f5bf52; --saffron-deep: #b07a10; --saffron-soft: #3a2f17;
  --lantern: #f06a6e; --lantern-deep: #b8454a; --lantern-soft: #3d2224;
  --sky: #6b9ff2; --sky-soft: #1d2b44; --bun: #f3dfb8; --bun-edge: #b99a62;
  --link: #36c995;
  --shadow: 0 10px 30px -18px rgba(0, 0, 0, .8);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--page); color: var(--ink); font: 15px/1.5 var(--font-body);
  transition: background var(--mid), color var(--mid);
  min-height: 100vh;
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0; }
h1 { font-size: 30px; font-weight: 800; }
h2 { font-size: 21px; font-weight: 700; }
:where(a) { color: var(--link); }
.han { font-family: var(--font-han); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 2px; border-radius: 10px; }

/* ---------- layout ---------- */
.shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.side {
  position: sticky; top: 0; height: 100vh; padding: 20px 14px; display: flex; flex-direction: column; gap: 6px;
  background: var(--card); border-right: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 16px; font-family: var(--font-display); font-weight: 800; font-size: 20px; }
.brand .mascot { width: 44px; height: 44px; flex: none; animation: none; }
.brand small { display: block; font: 600 12px var(--font-body); color: var(--muted); }
.nav a {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 14px; text-decoration: none;
  color: var(--ink); font-weight: 600; transition: background var(--fast), transform var(--fast);
}
.nav a:hover { background: var(--card-2); transform: translateX(2px); }
.nav a.on { background: var(--jade-soft); color: var(--jade-deep); }
:root[data-theme="dark"] .nav a.on { color: var(--jade); }
.nav svg { width: 20px; height: 20px; flex: none; }
.nav .count { margin-left: auto; background: var(--lantern); color: #fff; font-size: 12px; border-radius: 99px; padding: 0 7px; }
.side .grow { flex: 1; }
.me { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 14px; background: var(--card-2); font-size: 13px; }
.me img { width: 32px; height: 32px; border-radius: 50%; }
.me b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 130px; }
.main { padding: 28px clamp(16px, 4vw, 44px) 60px; min-width: 0; }
.head { display: flex; align-items: end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.head p { margin: 4px 0 0; color: var(--muted); }

@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .brand > div { display: none; }
  .side { position: sticky; z-index: 5; height: auto; flex-direction: row; align-items: center; padding: 8px 12px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .brand { padding: 0 8px 0 0; font-size: 17px; }
  .brand small, .side .grow, .me b, .me span { display: none; }
  .nav { display: flex; gap: 4px; }
  .nav a { padding: 8px 10px; white-space: nowrap; }
  .nav a span.label { display: none; }
  .main { padding-top: 18px; }
}

/* ---------- pieces ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px; box-shadow: var(--shadow); }
.grid { display: grid; gap: 16px; }
.grid.stats { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat b { font: 800 34px/1 var(--font-display); }
.stat.draft b { color: var(--saffron-deep); }
.stat.edited b { color: var(--sky); }
.stat.approved b { color: var(--jade); }
.stat.reports b { color: var(--lantern); }
:root[data-theme="dark"] .stat.draft b { color: var(--saffron); }

.btn {
  --b: var(--jade); --d: var(--jade-deep); --c: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; cursor: pointer;
  font: 700 15px/1 var(--font-display); letter-spacing: .2px; padding: 12px 18px 10px; border-radius: 14px;
  background: var(--b); color: var(--c); box-shadow: 0 4px 0 var(--d); text-decoration: none;
  transition: transform var(--fast), box-shadow var(--fast), filter var(--fast), opacity var(--fast);
  user-select: none; white-space: nowrap;
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: 0 5px 0 var(--d); }
.btn:active { transform: translateY(4px); box-shadow: 0 0 0 var(--d); }
.btn[disabled] { opacity: .5; pointer-events: none; }
.btn.ghost { --b: var(--card); --d: var(--line); --c: var(--ink); border: 1px solid var(--line); }
.btn.gold { --b: var(--saffron); --d: var(--saffron-deep); --c: #3b2a20; }
.btn.red { --b: var(--lantern); --d: var(--lantern-deep); }
.btn.sky { --b: var(--sky); --d: #2b5fb8; }
.btn.sm { font-size: 13px; padding: 8px 12px 7px; border-radius: 11px; box-shadow: 0 3px 0 var(--d); }
.btn.sm:active { transform: translateY(3px); }
.btn.icon { padding: 9px; border-radius: 12px; }
.btn svg { width: 18px; height: 18px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.spacer { flex: 1; }

.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 99px; font-size: 12.5px; font-weight: 600;
  background: var(--card-2); border: 1px solid var(--line); white-space: nowrap;
}
.chip.draft { background: var(--saffron-soft); border-color: transparent; color: var(--saffron-deep); }
.chip.edited { background: var(--sky-soft); border-color: transparent; color: var(--sky); }
.chip.approved { background: var(--jade-soft); border-color: transparent; color: var(--jade-deep); }
.chip.red { background: var(--lantern-soft); border-color: transparent; color: var(--lantern); }
:root[data-theme="dark"] .chip.draft { color: var(--saffron); }
:root[data-theme="dark"] .chip.approved { color: var(--jade); }
.chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .8; }
.chip.plain::before { display: none; }

.seg { display: inline-flex; max-width: 100%; overflow-x: auto; background: var(--card-2); border: 1px solid var(--line); border-radius: 14px; padding: 3px; gap: 2px; }
.seg button {
  border: 0; background: transparent; color: var(--muted); font: 600 13.5px var(--font-body); padding: 7px 12px; border-radius: 11px; cursor: pointer;
  transition: background var(--fast), color var(--fast);
}
.seg button.on { background: var(--card); color: var(--ink); box-shadow: 0 2px 0 var(--line); }

input, select, textarea {
  font: inherit; color: inherit; background: var(--card); border: 2px solid var(--line); border-radius: 12px; padding: 9px 12px;
  transition: border-color var(--fast), box-shadow var(--fast); width: 100%; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--jade); box-shadow: 0 0 0 4px var(--jade-soft); }
textarea { resize: vertical; min-height: 64px; }
label.f { display: flex; flex-direction: column; gap: 5px; font-size: 13px; font-weight: 600; color: var(--muted); }
label.f.changed > :is(input, textarea) { border-color: var(--saffron); }
.filters { display: grid; grid-template-columns: minmax(180px, 1.4fr) minmax(150px, 1fr) auto; gap: 10px; margin-bottom: 14px; align-items: center; }
@media (max-width: 700px) { .filters { grid-template-columns: 1fr; } }

/* progress bars stacked by status */
.bar { display: flex; height: 12px; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; transform-origin: left; animation: grow .7s var(--ease) both; }
.bar i.approved { background: var(--jade); }
.bar i.edited { background: var(--sky); }
.bar i.draft { background: var(--saffron); }
.lessons { display: grid; gap: 10px; }
.lesson-row {
  display: grid; grid-template-columns: 52px 1fr 2fr 70px; gap: 14px; align-items: center; padding: 10px 14px;
  border-radius: 14px; text-decoration: none; color: inherit; transition: background var(--fast), transform var(--fast);
}
.lesson-row:hover { background: var(--card-2); transform: translateX(3px); }
.lesson-row .num { font: 800 20px var(--font-display); color: var(--jade); }
@media (max-width: 700px) { .lesson-row { grid-template-columns: 40px 1fr 70px; } .lesson-row .bar { grid-column: 1 / -1; } }

/* word list */
.words { display: grid; gap: 8px; }
.word {
  display: grid; grid-template-columns: 28px 86px 1fr auto; gap: 14px; align-items: center; padding: 12px 14px;
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; cursor: pointer;
  transition: transform var(--fast), box-shadow var(--fast), border-color var(--fast);
}
.word:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--jade); }
.word .hz { font: 600 28px/1.1 var(--font-han); text-align: center; }
.word .hz.long { font-size: 21px; }
.word .py { font-weight: 600; }
.word .mean { color: var(--muted); font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.word input[type=checkbox] { width: 20px; height: 20px; accent-color: var(--jade); cursor: pointer; }
@media (max-width: 600px) { .word { grid-template-columns: 24px 60px 1fr; } .word .tags { grid-column: 2 / -1; } .word .hz { font-size: 22px; } }
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }
.bulkbar {
  position: sticky; bottom: 16px; margin-top: 14px; display: flex; gap: 12px; align-items: center; padding: 10px 14px;
  border-radius: 16px; background: var(--ink); color: var(--page); box-shadow: var(--shadow); animation: rise var(--mid) var(--ease) both;
}

/* editor */
.editor { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 1100px) { .editor { grid-template-columns: 1fr; } }
.big-hz { font: 600 64px/1 var(--font-han); }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fields .wide { grid-column: 1 / -1; }
.example { border: 1px dashed var(--line); border-radius: 14px; padding: 12px; display: grid; gap: 8px; animation: pop var(--mid) var(--ease) both; }
.example .row { justify-content: space-between; }
.cmp { display: grid; gap: 10px; }
.cmp .k { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.cmp .v { padding: 8px 10px; border-radius: 10px; background: var(--card-2); word-break: break-word; }
ins { background: var(--jade-soft); color: var(--jade-deep); text-decoration: none; border-radius: 4px; padding: 0 1px; }
del { background: var(--lantern-soft); color: var(--lantern); border-radius: 4px; padding: 0 1px; }
:root[data-theme="dark"] ins { color: var(--jade); }
.timeline { display: grid; gap: 0; }
.timeline .t { display: grid; grid-template-columns: 14px 1fr; gap: 10px; padding-bottom: 12px; position: relative; font-size: 13.5px; }
.timeline .t::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--jade); margin-top: 6px; }
.timeline .t::after { content: ""; position: absolute; left: 4px; top: 18px; bottom: 0; width: 2px; background: var(--line); }
.timeline .t:last-child::after { display: none; }
.timeline .t.reject::before { background: var(--lantern); }
.timeline .t.import::before { background: var(--saffron); }
.timeline .t.edit::before { background: var(--sky); }
.notice { padding: 12px 14px; border-radius: 14px; background: var(--saffron-soft); border: 1px solid var(--saffron); font-size: 14px; }
.notice.red { background: var(--lantern-soft); border-color: var(--lantern); }
.notice.green { background: var(--jade-soft); border-color: var(--jade); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); font-weight: 600; padding: 8px 10px; }
td { padding: 10px; border-top: 1px solid var(--line); vertical-align: middle; }
.table-wrap { overflow-x: auto; }

/* sign-in */
.gate { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.gate .card { width: min(420px, 100%); text-align: center; padding: 34px 28px; display: grid; gap: 14px; justify-items: center; }
.gate h1 { font-size: 34px; }
.mascot { width: 120px; height: 122px; animation: bob 2.6s ease-in-out infinite; }
.mascot .steam { animation: steam 2.4s ease-in-out infinite; transform-origin: center bottom; }
.mascot .steam:nth-child(2) { animation-delay: .8s; }
.mascot .steam:nth-child(3) { animation-delay: 1.6s; }
.gbtn { --b: var(--card); --d: var(--line); --c: var(--ink); border: 1px solid var(--line); width: 100%; }
.gbtn svg { width: 20px; height: 20px; }

/* dialogs + toasts */
dialog {
  border: 0; border-radius: 22px; padding: 22px; width: min(460px, calc(100vw - 32px)); background: var(--card); color: var(--ink);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .45);
}
dialog[open] { animation: pop var(--mid) var(--ease) both; }
dialog::backdrop { background: rgba(10, 20, 15, .45); backdrop-filter: blur(3px); animation: fade var(--mid) both; }
dialog h2 { margin-bottom: 8px; }
dialog .row.end { margin-top: 18px; }
.toasts { position: fixed; right: 18px; bottom: 18px; display: grid; gap: 8px; z-index: 50; }
.toast {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: 14px; background: var(--ink); color: var(--page);
  font-weight: 600; box-shadow: var(--shadow); animation: slidein var(--mid) var(--ease) both; max-width: 360px;
}
.toast.err { background: var(--lantern); color: #fff; }
.toast.out { animation: slideout .25s ease both; }

/* loading */
.skel { border-radius: 14px; height: 58px; background: linear-gradient(90deg, var(--card) 0%, var(--card-2) 50%, var(--card) 100%); background-size: 200% 100%; animation: shimmer 1.1s linear infinite; border: 1px solid var(--line); }
.empty { text-align: center; padding: 40px 10px; color: var(--muted); display: grid; justify-items: center; gap: 10px; }
.loadbar { position: fixed; top: 0; left: 0; height: 3px; background: var(--jade); z-index: 60; width: 0; transition: width .3s, opacity .4s; }

/* motion */
.view > * { animation: rise var(--mid) var(--ease) both; }
.view > *:nth-child(2) { animation-delay: .04s; }
.view > *:nth-child(3) { animation-delay: .08s; }
.view > *:nth-child(4) { animation-delay: .12s; }
.view > *:nth-child(n+5) { animation-delay: .16s; }
.stagger > * { animation: rise var(--mid) var(--ease) both; animation-delay: calc(var(--i, 0) * 25ms); }
.flash { animation: flash .9s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes pop { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } }
@keyframes grow { from { transform: scaleX(0); } }
@keyframes slidein { from { opacity: 0; transform: translateX(30px); } }
@keyframes slideout { to { opacity: 0; transform: translateX(30px); } }
@keyframes shimmer { to { background-position: -200% 0; } }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes steam { 0% { opacity: 0; transform: translateY(6px) scaleY(.8); } 40% { opacity: .9; } 100% { opacity: 0; transform: translateY(-10px) scaleY(1.1); } }
@keyframes flash { 0% { box-shadow: 0 0 0 0 var(--jade); } 100% { box-shadow: 0 0 0 14px transparent; } }
@keyframes wiggle { 0%, 100% { transform: none; } 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
.wiggle { animation: wiggle .3s ease 2; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}