:root {
  color-scheme: light;
  --page: #f4f6f1;
  --surface: #fff;
  --ink: #172f27;
  --muted: #4d6158;
  --brand: #175a42;
  --brand-hover: #114532;
  --accent: #cae873;
  --border: #d5dfd6;
  --soft: #eaf2e7;
  --error: #9a3026;
  --focus: #8b481d;
  font-family: "Vazirmatn", "Segoe UI", Tahoma, sans-serif;
  line-height: 1.65;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--page); color: var(--ink); min-width: 0; }
h1, h2, h3, p { margin: 0; }
button, input, select { font: inherit; }
button, input, select { min-height: 46px; }
button, select { cursor: pointer; }
button:disabled, select:disabled { cursor: default; }
button:disabled:not(.is-answer):not(.is-miss) { opacity: .72; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
[tabindex="-1"]:focus-visible { outline-offset: 5px; }
.skip { position: absolute; inset-block-start: -10rem; inset-inline-start: 1rem; z-index: 2; background: white; padding: .7rem 1rem; color: var(--ink); }
.skip:focus { inset-block-start: .75rem; }
.wrap { width: min(100% - 3rem, 71rem); margin-inline: auto; }
.masthead { border-block-end: 1px solid var(--border); background: #fcfdf9; }
.masthead-inner, .brand, .account { display: flex; align-items: center; gap: .85rem; }
.masthead-inner { min-height: 76px; justify-content: space-between; }
.brand { flex: none; }
.brand strong, .brand div span { display: block; line-height: 1.25; }
.brand strong { font-size: 1.23rem; }
.brand div span, .footer [lang] { font: 600 .67rem/1.5 system-ui, sans-serif; letter-spacing: .095em; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: var(--ink); color: var(--accent); }
.brand-mark svg { width: 23px; height: 23px; }
.account { min-width: 0; }
.account-email { color: var(--muted); font: .86rem system-ui, sans-serif; overflow-wrap: anywhere; }
.account button { flex-shrink: 0; }
main { min-height: 73vh; padding-block: 2rem 3rem; }
.announcement:not(:empty) { background: var(--soft); border: 1px solid #adc7ad; border-radius: .75rem; margin-block-end: 1rem; padding: .75rem 1rem; }
.kicker { display: inline-flex; gap: .6rem; align-items: center; color: var(--brand); font-weight: 700; font-size: .86rem; }
.signal { inline-size: .56rem; block-size: .56rem; border-radius: 50%; background: currentColor; }
.muted, .help { color: var(--muted); }
.help { font-size: .87rem; }
.period { color: var(--brand); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 1.4rem; min-width: 0; }
.auth-layout { display: grid; grid-template-columns: 1.3fr 1fr; align-items: stretch; gap: 1.25rem; margin-block: clamp(.4rem, 2vw, 1.6rem); }
.welcome {
  background: radial-gradient(ellipse at 9% 91%, #255542 0, transparent 48%), #162f26;
  color: #f5fbef;
  border-radius: 1.4rem;
  padding: clamp(1.5rem, 4vw, 3.3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.welcome .kicker, .welcome .period { color: var(--accent); }
.welcome h1 { font-size: clamp(2.65rem, 5.7vw, 4.65rem); line-height: 1.24; margin-block: .8rem 1.15rem; }
.welcome p { color: #dbe9df; max-width: 32ch; font-size: 1.08rem; }
.welcome .welcome-caption { font-size: .81rem; max-width: none; }
.welcome-steps { list-style: none; padding: 0; margin: 2rem 0 .8rem; display: grid; grid-template-columns: repeat(5, 1fr); gap: .4rem; }
.welcome-steps li { background: #263f34; border: 1px solid #597263; border-radius: .72rem; text-align: center; min-width: 0; padding: .52rem 0; }
.welcome-steps li:last-child { background: var(--accent); border-color: var(--accent); color: var(--ink); }
.welcome-steps b, .welcome-steps span { display: block; line-height: 1.32; }
.welcome-steps b { font-size: 1.45rem; }
.welcome-steps span { font-size: .75rem; }
.auth-card { align-content: center; padding: clamp(1.2rem, 3vw, 2.4rem); }
.auth-card h2 { font-size: 1.75rem; margin-block: 1rem .3rem; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: .25rem; padding: .28rem; border-radius: .8rem; background: var(--soft); }
.segmented:has(#showRegister[hidden]) { grid-template-columns: 1fr; }
.segmented button, .panel-nav button { border: 1px solid transparent; border-radius: .64rem; color: var(--muted); background: transparent; font-weight: 650; padding-inline: .8rem; }
.segmented button[aria-pressed="true"] { background: white; color: var(--ink); border-color: var(--border); }
form { display: grid; gap: .55rem; margin-block-start: 1.1rem; }
label { display: block; font-weight: 650; }
input, select { background: #fcfdfb; color: var(--ink); border: 1px solid #82978b; border-radius: .65rem; padding: .62rem .75rem; width: 100%; }
input + label { margin-block-start: .25rem; }
input[dir="ltr"] { text-align: left; }
form .primary { margin-block-start: .6rem; }
.primary, .secondary, .quiet { border: 1px solid transparent; border-radius: .68rem; padding: .55rem 1rem; font-weight: 700; }
.primary { background: var(--brand); color: white; }
.primary:hover { background: var(--brand-hover); }
.secondary { background: var(--soft); border-color: #99b09f; color: var(--ink); }
.secondary:hover, .quiet:hover { background: #dce9dc; }
.quiet { background: transparent; color: var(--brand); }
.error:not(:empty) { margin-block-start: .8rem; color: var(--error); font-weight: 650; }

.dashboard-heading { margin-block: .2rem 1.25rem; }
.admin-panel { margin-block-end: 1.25rem; }
.admin-panel summary { cursor: pointer; font-weight: 700; }
.dashboard-heading h1 { font-size: clamp(2.2rem, 5vw, 3.75rem); line-height: 1.25; margin-block: .22rem .3rem; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.stat { border: 1px solid var(--border); border-radius: 1rem; background: var(--surface); padding: .92rem 1.15rem; }
.stat.emphasis { background: #e7f2cc; border-color: #ccdca6; }
.stat span { font-weight: 650; }
.stat strong, .stat small { display: block; }
.stat strong { font-size: clamp(1.6rem, 3vw, 2.45rem); line-height: 1.25; margin-block: .25rem; }
.stat small { color: var(--muted); }
.panel-nav { display: flex; flex-wrap: wrap; gap: .35rem; margin-block: 1.2rem .8rem; }
.panel-nav button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.panel-nav button:hover:not([aria-pressed="true"]) { background: var(--soft); }
.work-grid { display: grid; grid-template-columns: minmax(0, 2.15fr) minmax(15rem, 1fr); align-items: start; gap: .85rem; }
.panel, .side-panel { padding: clamp(1rem, 2.75vw, 1.75rem); }
.section-head h2, .side-panel h2 { font-size: clamp(1.35rem, 2.5vw, 1.8rem); margin-block: .2rem .45rem; }
.controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; margin-block: .95rem 1rem; }
.controls label { margin-block-end: .35rem; }
.boxes { list-style: none; margin: .9rem 0; padding: 0; display: grid; gap: .38rem; }
.boxes li { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .52rem; padding: .4rem .55rem; background: var(--page); border-radius: .57rem; }
.boxes .box-number { display: grid; place-items: center; border-radius: .45rem; width: 2rem; height: 2rem; background: #dce9db; font-weight: 700; }
.boxes .box-count { color: var(--muted); font-size: .87rem; }
.collection-count { display: grid; gap: .3rem; border-block-start: 1px solid var(--border); padding-block-start: .75rem; }
.collection-count span { display: flex; justify-content: space-between; gap: .5rem; }

.review-top, .actions { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .6rem; }
.review-top { margin-block-start: .4rem; }
#quizPosition { font-weight: 700; }
progress { display: block; width: 100%; height: .55rem; border: 0; border-radius: 20px; overflow: hidden; accent-color: var(--brand); background: var(--soft); }
progress::-webkit-progress-bar { background: var(--soft); }
progress::-webkit-progress-value { background: var(--brand); }
progress::-moz-progress-bar { background: var(--brand); }
.flashcard { background: #edf4e9; border: 1px solid #c2d2c2; border-radius: 1rem; text-align: center; padding: 1.25rem 1rem; margin-block: 1rem .8rem; overflow-wrap: anywhere; }
.flash-tag { color: var(--brand); font-size: .8rem; font-weight: 700; }
.flashcard h3 { font: 700 clamp(1.7rem, 4vw, 2.7rem)/1.2 system-ui, sans-serif; margin-block: .6rem .28rem; }
.flashcard .translation { border-block-start: 1px solid #a8bfae; padding-block-start: .7rem; margin-block-start: .7rem; font-size: 1.26rem; font-weight: 700; }
#wordExampleText { color: var(--muted); }
#reveal, #nextQuestion, .actions, #nextGrammar { margin-block-start: .75rem; }
.actions { justify-content: flex-start; }
.feedback { padding: .72rem .85rem; margin-block: .8rem 0; border: 1px solid #adc7ad; border-radius: .65rem; background: var(--soft); }
#grammarTitle { text-align: left; font: 700 1.2rem/1.5 system-ui, sans-serif; }
#grammarNote { margin-block: .35rem .65rem; }
#grammarQuestion { text-align: left; background: var(--page); padding: .9rem; border-radius: .65rem; font: 650 1.05rem/1.5 system-ui, sans-serif; }
.choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem; margin-block-start: .65rem; }
.choices button { text-align: left; overflow-wrap: anywhere; }
.choices .is-answer { border-color: var(--brand); background: #dcefcf; }
.choices .is-miss { border-color: var(--error); background: #f8e3db; }
.footer { display: flex; flex-wrap: wrap; gap: .5rem 1rem; justify-content: space-between; border-block-start: 1px solid var(--border); padding-block: 1.05rem; color: var(--muted); font-size: .82rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: .5rem 1rem; }
.policy { max-width: 48rem; margin-inline: auto; }
.policy h1 { margin-block: .5rem 1rem; }
.policy h2 { font-size: 1.2rem; margin-block: 1.5rem .3rem; }
.policy p { line-height: 1.95; }
.policy a, .footer-links a { color: inherit; text-underline-offset: .2em; }

@media (max-width: 52rem) {
  .auth-layout { grid-template-columns: 1fr 1fr; }
  .work-grid { grid-template-columns: 1fr; }
}
@media (max-width: 39rem) {
  .wrap { width: calc(100% - 1.5rem); }
  main { padding-block: 1rem 2rem; }
  .masthead-inner { min-height: 64px; }
  .account-email { display: none; }
  .auth-layout { grid-template-columns: 1fr; gap: .75rem; }
  .auth-card { order: -1; }
  .welcome h1 { font-size: 2.6rem; }
  .welcome-steps { margin-block-start: 1rem; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .45rem; }
  .stat { padding: .6rem .7rem; }
  .stat.emphasis { grid-column: 1 / -1; }
}
@media (max-width: 23rem) {
  .controls, .choices { grid-template-columns: 1fr; }
  .panel-nav button { padding-inline: .48rem; }
}