:root {
  color-scheme: light dark;
  --canvas: #f5f5f7;
  --surface: #ffffff;
  --surface-subtle: #fafafa;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --quiet: #86868b;
  --line: rgba(0, 0, 0, .1);
  --line-strong: rgba(0, 0, 0, .17);
  --accent: #0066cc;
  --green: #55ad68;
  --red: #d94242;
  --amber: #ba7517;
  --radius: 14px;
  --radius-small: 10px;
  --page-gutter: clamp(20px, 3.5vw, 64px);
  --shadow: 0 1px 2px rgba(0, 0, 0, .03), 0 12px 30px rgba(0, 0, 0, .035);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #000000;
    --surface: #1c1c1e;
    --surface-subtle: #111113;
    --ink: #f5f5f7;
    --muted: #a1a1a6;
    --quiet: #8e8e93;
    --line: rgba(255, 255, 255, .12);
    --line-strong: rgba(255, 255, 255, .2);
    --accent: #2997ff;
    --green: #92ffa8;
    --red: #ff6961;
    --amber: #ffb340;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body { min-height: 100vh; margin: 0; background: var(--canvas); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.45; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.site-header, .page-shell, footer { width: 100%; padding-inline: var(--page-gutter); }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 64px; border-bottom: 1px solid var(--line); }
.wordmark { display: flex; align-items: baseline; gap: 8px; font-size: .94rem; letter-spacing: -.018em; }
.wordmark span { font-weight: 680; }
.wordmark i { color: var(--quiet); font-style: normal; }
.wordmark strong { color: var(--green); font-size: .78rem; font-weight: 680; }
.top-navigation { display: flex; align-items: center; gap: 18px; }
.nav-button, .text-button { padding: 0; border: 0; background: none; color: var(--muted); cursor: pointer; }
.nav-button { min-height: 34px; font-size: .84rem; }
.nav-button:hover, .nav-button.active, .text-button:hover { color: var(--ink); }
.nav-button.active { box-shadow: inset 0 -2px var(--green); }
.page-shell { min-height: calc(100vh - 126px); }
.view { padding: 34px 0 44px; }
.section-label { margin: 0 0 7px; color: var(--green); font-size: .72rem; font-weight: 720; letter-spacing: .08em; text-transform: uppercase; }

.home-view { display: grid; align-content: center; min-height: calc(100vh - 126px); padding-block: clamp(46px, 9vh, 100px); }
.home-heading { width: min(820px, 100%); margin-bottom: clamp(30px, 6vh, 58px); }
.home-heading h1 { margin: 0; font-size: clamp(3rem, 8vw, 7.4rem); letter-spacing: -.07em; line-height: .91; }
.home-options { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.home-option { position: relative; display: grid; grid-template-columns: auto 1fr auto; grid-template-rows: auto auto; gap: 8px 18px; min-height: 190px; padding: clamp(22px, 3vw, 38px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--ink); text-align: left; box-shadow: var(--shadow); cursor: pointer; transition: border-color 160ms ease, transform 160ms ease, background 160ms ease; }
.home-option:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.home-option .option-index { grid-row: 1 / 3; color: var(--quiet); font-size: .72rem; font-weight: 700; letter-spacing: .08em; }
.home-option strong { align-self: end; font-size: clamp(1.6rem, 3.4vw, 2.8rem); letter-spacing: -.045em; line-height: 1; }
.home-option > span:not(.option-index) { align-self: start; color: var(--muted); font-size: .9rem; }
.home-option i { grid-column: 3; grid-row: 1 / 3; align-self: center; color: var(--green); font-size: 1.8rem; font-style: normal; }
.home-count { margin: 18px 2px 0; color: var(--quiet); font-size: .78rem; }

.login-panel { width: min(480px, 100%); margin: 0 auto; padding: clamp(64px, 12vh, 110px) 0; }
.login-panel h1 { margin: 0 0 12px; font-size: clamp(3rem, 7vw, 4.6rem); letter-spacing: -.06em; line-height: .95; }
.login-copy { margin: 0 0 12px; color: var(--muted); }
.login-form { display: grid; gap: 12px; }
.remember-toggle { display: flex; align-items: center; justify-content: space-between; color: var(--muted); cursor: pointer; font-size: .82rem; }
.remember-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.remember-toggle i { position: relative; width: 34px; height: 20px; border-radius: 20px; background: var(--line-strong); transition: background 140ms; }
.remember-toggle i::after { position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: var(--surface); box-shadow: 0 1px 3px rgba(0, 0, 0, .24); content: ""; transition: transform 140ms; }
.remember-toggle input:checked + i { background: var(--green); }
.remember-toggle input:checked + i::after { transform: translateX(14px); }

.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.page-heading h1 { margin: 0; font-size: clamp(2.9rem, 6vw, 5rem); letter-spacing: -.06em; line-height: .94; }
.count { color: var(--quiet); font-size: .8rem; }
#cards-view .page-heading { align-items: center; margin-bottom: 20px; }
#cards-view .page-heading h1 { font-size: clamp(2.8rem, 5vw, 4.2rem); }
#cards-view .count { padding: 6px 10px; border-radius: 999px; background: var(--surface); }

input, select, textarea { width: 100%; border: 1px solid var(--line-strong); border-radius: var(--radius-small); background: var(--surface); color: var(--ink); }
input, select { height: 46px; padding: 0 13px; }
textarea { min-height: 92px; padding: 12px 13px; line-height: 1.45; resize: vertical; }
::placeholder { color: color-mix(in srgb, var(--quiet) 75%, transparent); }
label > span, .tags-field > span { display: block; margin-bottom: 6px; color: var(--muted); font-size: .78rem; font-weight: 650; }
.primary-button { min-height: 44px; padding: 10px 17px; border: 0; border-radius: var(--radius-small); background: var(--ink); color: var(--canvas); font-weight: 680; cursor: pointer; }
.primary-button:hover { opacity: .88; }
.primary-button:disabled { cursor: wait; opacity: .5; }
.form-message { min-height: 20px; margin: 0; color: var(--red); font-size: .8rem; }

.card-composer, .quiz-setup, .question-card, .quiz-summary { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.card-composer { display: grid; gap: 17px; padding: 20px; }
.composer-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.composer-heading h2 { margin: 0; font-size: 1.15rem; letter-spacing: -.02em; }
.composer-heading span { color: var(--quiet); font-size: .76rem; }
.composer-heading span.is-sentence { color: var(--green); }
.language-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.composer-meta { display: grid; grid-template-columns: minmax(220px, 1fr) 220px auto; gap: 12px; align-items: end; }
.tags-field { position: relative; }
.tags-field small { position: absolute; right: 10px; top: 39px; color: var(--quiet); font-size: .68rem; pointer-events: none; }
.tags-field input { padding-right: 112px; }
.composer-actions { display: flex; align-items: center; justify-content: flex-end; gap: 15px; min-height: 46px; }
.add-card-area { margin-top: 14px; }
.add-card-button { width: 100%; min-height: 58px; border: 1px dashed var(--line-strong); border-radius: var(--radius); background: transparent; color: var(--muted); font-weight: 650; cursor: pointer; }
.add-card-button:hover { border-color: var(--green); background: color-mix(in srgb, var(--green) 5%, transparent); color: var(--ink); }
.add-card-button span { display: inline-grid; place-items: center; width: 24px; height: 24px; margin-right: 8px; border-radius: 50%; background: var(--surface); font-size: 1.1rem; }
.add-card-area .card-composer { margin-top: 14px; }

.library-toolbar { display: grid; grid-template-columns: minmax(180px, 1.2fr) minmax(150px, 1fr) minmax(150px, 1fr) 180px; gap: 10px; margin: 0 0 14px; }
.library-toolbar label > span { font-size: .7rem; }
.library-filters { margin-bottom: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.library-filters .library-toolbar { padding: 0 20px 20px; margin: 0; }
.practice-stats { margin-top: 28px; padding: clamp(20px, 3vw, 32px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.quiz-setup[hidden] + .practice-stats { display: none; }
.stats-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.stats-heading h2, .stats-heading h3 { margin: 0; letter-spacing: -.025em; }
.stats-heading h2 { font-size: 1.4rem; }
.stats-heading h3 { font-size: .95rem; }
.stats-heading > span, .stats-note { color: var(--muted); font-size: .78rem; }
.stats-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0 32px; }
.stats-metrics > div { display: grid; gap: 4px; }
.stats-metrics strong { font-size: clamp(1.9rem, 4vw, 3rem); letter-spacing: -.05em; }
.stats-metrics span { color: var(--muted); font-size: .85rem; }
.score-chart { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 14px; margin-top: 22px; }
.score-day { display: grid; justify-items: center; gap: 8px; color: var(--muted); font-size: .75rem; }
.score-track { display: flex; align-items: end; width: min(44px, 100%); height: 90px; border-bottom: 1px solid var(--line-strong); }
.score-track i { display: block; width: 100%; background: var(--green); border-radius: 5px 5px 0 0; }
.stats-note { margin: 22px 0 0; }
.card-list { display: flex; flex-wrap: wrap; gap: 12px; }
.card-list > .vocabulary-card { flex: 1 1 340px; min-width: 0; max-width: 100%; }
.card-footer { flex-wrap: wrap; }
.tag-picker { position: relative; min-width: 0; }
.tag-picker-label { display: block; margin-bottom: 6px; color: var(--muted); font-size: .78rem; font-weight: 650; }
.tag-picker-toggle { display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: var(--radius-small); background: var(--surface); text-align: left; cursor: pointer; }
.tag-picker-toggle > span:first-child { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.tag-options { position: absolute; z-index: 10; top: 100%; left: 0; right: 0; display: grid; gap: 4px; max-height: 240px; overflow-y: auto; margin-top: 5px; padding: 8px; border: 1px solid var(--line-strong); border-radius: var(--radius-small); background: var(--surface); box-shadow: var(--shadow); }
.tag-options label { display: flex; align-items: center; gap: 9px; min-height: 40px; padding: 7px 10px; border: 1px solid transparent; border-radius: 6px; cursor: pointer; }
.tag-options label:has(:checked) { border-color: var(--accent); background: var(--surface-subtle); }
.tag-options input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.tag-options label > span { margin: 0; font-size: .875rem; overflow-wrap: anywhere; }
.vocabulary-card { padding: 17px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.card-language { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 10px; align-items: baseline; }
.card-language > span { color: var(--quiet); font-size: .68rem; font-weight: 720; letter-spacing: .08em; }
.primary-language strong { overflow-wrap: anywhere; font-size: clamp(1.2rem, 2vw, 1.55rem); letter-spacing: -.025em; }
.translation-list { display: grid; grid-template-columns: 1fr; gap: 14px; margin: 12px 0 15px; padding-top: 12px; border-top: 1px solid var(--line); }
.card-language p { margin: 0; overflow-wrap: anywhere; color: var(--muted); }
.card-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.tag-list, .card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; }
.tag { padding: 3px 8px; border-radius: 999px; background: var(--surface-subtle); color: var(--muted); font-size: .72rem; }
.card-meta { justify-content: flex-end; color: var(--quiet); font-size: .7rem; }
.sentence-badge { color: var(--green); font-weight: 680; }
.delete-card:hover { color: var(--red); }
.empty-state { display: grid; place-items: center; min-height: 130px; margin: 0; color: var(--muted); }

.quiz-setup { display: grid; gap: 0; overflow: visible; padding: 0; }
.quiz-quickstart { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: clamp(24px, 4vw, 42px); }
.quiz-quickstart h2 { margin: 0 0 9px; font-size: clamp(2rem, 4vw, 3.5rem); letter-spacing: -.055em; line-height: .95; }
.quiz-default-summary { margin: 0; color: var(--muted); font-size: .84rem; }
.quickstart-action { display: grid; justify-items: end; gap: 10px; flex: 0 0 auto; }
.quickstart-action p { margin: 0; color: var(--quiet); font-size: .78rem; }
.quickstart-action .primary-button { min-width: 178px; min-height: 52px; }
.quickstart-action .primary-button span { margin-left: 9px; color: var(--green); }
.quiz-setup > .form-message { min-height: 0; padding: 0 clamp(24px, 4vw, 42px) 18px; }
.quiz-setup > .form-message:empty { display: none; }
.quiz-options { border-top: 1px solid var(--line); }
.quiz-options summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 17px clamp(24px, 4vw, 42px); color: var(--muted); font-size: .84rem; font-weight: 680; list-style: none; cursor: pointer; }
.quiz-options summary::-webkit-details-marker { display: none; }
.quiz-options summary small { display: flex; align-items: center; gap: 9px; color: var(--quiet); font-size: .72rem; font-weight: 560; }
.quiz-options summary small::after { display: inline-grid; place-items: center; width: 23px; height: 23px; border: 1px solid var(--line-strong); border-radius: 50%; content: "+"; font-size: 1rem; transition: transform 160ms ease; }
.quiz-options[open] summary small::after { transform: rotate(45deg); }
.quiz-options summary:hover { color: var(--ink); }
.quiz-options-body { display: grid; gap: 22px; padding: 8px clamp(24px, 4vw, 42px) clamp(24px, 4vw, 38px); }
.setup-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.quiz-types { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; border: 0; }
.quiz-types legend { width: 100%; margin-bottom: 4px; color: var(--muted); font-size: .78rem; font-weight: 650; }
.quiz-types label { position: relative; cursor: pointer; }
.quiz-types input { position: absolute; opacity: 0; pointer-events: none; }
.quiz-types span { display: block; min-height: 38px; padding: 9px 12px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--muted); font-size: .82rem; }
.quiz-types input:checked + span { border-color: var(--green); background: color-mix(in srgb, var(--green) 10%, var(--surface)); color: var(--ink); }
.quiz-types input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 3px; }
.quiz-stage { display: grid; gap: 16px; }
.quiz-progress { display: grid; grid-template-columns: auto minmax(100px, 1fr) auto; align-items: center; gap: 14px; color: var(--muted); font-size: .78rem; }
.quiz-progress > div { height: 5px; overflow: hidden; border-radius: 99px; background: var(--line); }
.quiz-progress i { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--green); transition: width 180ms ease; }
.question-card { min-height: 390px; padding: clamp(22px, 4vw, 46px); transition: opacity 220ms ease, transform 220ms ease; }
.question-card.is-leaving { opacity: 0; transform: translateY(8px); }
.question-card.result-correct { border-color: var(--green); background: color-mix(in srgb, var(--green) 12%, var(--surface)); }
.question-card.result-wrong { border-color: var(--red); background: color-mix(in srgb, var(--red) 12%, var(--surface)); }
.question-card.retry-wrong { animation: answer-error-pulse 300ms ease-in-out 2; }
@keyframes answer-error-pulse {
  0%, 100% { background: var(--surface); border-color: var(--line); }
  50% { background: color-mix(in srgb, var(--red) 18%, var(--surface)); border-color: var(--red); }
}
@media (prefers-reduced-motion: reduce) {
  .question-card.retry-wrong { animation: none; }
}
.question-meta { display: flex; justify-content: space-between; color: var(--quiet); font-size: .7rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.question-prompt { margin: clamp(30px, 7vh, 72px) 0 32px; overflow-wrap: anywhere; font-size: clamp(2.2rem, 6vw, 4.6rem); font-weight: 700; letter-spacing: -.055em; line-height: 1.02; text-align: center; }
.answer-area { width: min(760px, 100%); margin: 0 auto; }
.answer-form { display: grid; grid-template-columns: 1fr auto; gap: 9px; }
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.answer-choice, .token, .pair-tile, .reveal-button { min-height: 48px; padding: 11px 14px; border: 1px solid var(--line-strong); border-radius: var(--radius-small); background: var(--surface); cursor: pointer; }
.answer-choice:hover, .token:hover, .pair-tile:hover, .reveal-button:hover { background: var(--surface-subtle); }
.answer-choice.correct, .pair-tile.matched { border-color: var(--green); background: color-mix(in srgb, var(--green) 11%, var(--surface)); }
.answer-choice.wrong, .pair-tile.wrong { border-color: var(--red); background: color-mix(in srgb, var(--red) 9%, var(--surface)); }
.reveal-cover { display: grid; align-content: center; justify-items: center; gap: 16px; width: 100%; min-height: 150px; padding: 24px; overflow: hidden; }
.reveal-value { font-size: clamp(1.55rem, 4vw, 2.7rem); font-weight: 680; filter: blur(11px); opacity: .72; user-select: none; transition: filter 220ms ease, opacity 220ms ease; }
.reveal-hint { color: var(--quiet); font-size: .76rem; font-weight: 650; }
.reveal-cover.revealed { cursor: default; }
.reveal-cover.revealed .reveal-value { filter: blur(0); opacity: 1; user-select: text; }
.reveal-value { max-width: 100%; overflow-wrap: anywhere; }
.rating-actions { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; margin-top: 16px; }
.rating-actions .answer-choice { width: 100%; min-height: 52px; }
.token-zone { display: flex; flex-wrap: wrap; align-content: flex-start; gap: 8px; min-height: 70px; padding: 10px; border: 1px dashed var(--line-strong); border-radius: var(--radius-small); }
.token-bank { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; min-height: 66px; margin-top: 12px; padding: 8px; border: 1px solid transparent; border-radius: var(--radius-small); }
.token-zone.drop-target, .token-bank.drop-target { border-color: var(--green); background: color-mix(in srgb, var(--green) 7%, transparent); }
.token.dragging { opacity: .35; }
.token.selected { border-color: var(--green); background: color-mix(in srgb, var(--green) 10%, var(--surface)); }
.sentence-help { margin: 10px 0 0; color: var(--quiet); font-size: .74rem; text-align: center; }
.sentence-actions { display: flex; justify-content: center; gap: 14px; margin-top: 18px; }
.pair-board { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 22px; }
.pair-column { display: grid; gap: 8px; }
.pair-tile.selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.feedback { width: min(760px, 100%); margin: 22px auto 0; padding: 13px 15px; color: var(--muted); text-align: center; }
.feedback.correct { color: var(--green); }
.feedback.wrong { color: var(--red); }
.question-actions { display: flex; align-items: center; justify-content: space-between; margin-top: 28px; }
#continue-question { width: 100%; }

.quiz-summary { padding: clamp(24px, 5vw, 48px); }
.quiz-summary h2 { margin: 0 0 28px; font-size: clamp(2rem, 5vw, 3.6rem); letter-spacing: -.05em; }
.summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.summary-grid div { display: grid; gap: 4px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-small); }
.summary-grid strong { font-size: 2rem; }
.summary-grid span { color: var(--muted); font-size: .76rem; }
.summary-actions { display: flex; align-items: center; justify-content: flex-end; gap: 20px; margin-top: 25px; }
footer { display: flex; justify-content: space-between; padding-block: 20px 28px; border-top: 1px solid var(--line); color: var(--quiet); font-size: .72rem; }

@media (max-width: 1040px) {
  .composer-meta { grid-template-columns: 1fr 1fr; }
  .composer-actions { grid-column: 1 / -1; }
  .library-toolbar { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .home-options { grid-template-columns: 1fr; }
  .home-option { min-height: 150px; }
  .quiz-quickstart { align-items: flex-start; flex-direction: column; }
  .quickstart-action { justify-items: start; width: 100%; }
  .quickstart-action .primary-button { width: 100%; }
  .language-grid, .translation-list { grid-template-columns: 1fr; }
  .setup-grid { grid-template-columns: 1fr 1fr; }
  .card-footer { align-items: flex-start; flex-direction: column; }
  .card-meta { justify-content: flex-start; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  :root { --page-gutter: 16px; }
  .site-header { align-items: center; min-height: auto; padding-block: 13px; }
  .wordmark strong, .wordmark i { display: none; }
  .top-navigation { gap: 10px; }
  .nav-button { font-size: .78rem; }
  .home-view { align-content: start; min-height: auto; }
  .home-heading h1 { font-size: clamp(3rem, 14vw, 4.8rem); }
  .view { padding-top: 27px; }
  .page-heading { align-items: flex-start; flex-direction: column; gap: 10px; }
  .card-composer { padding: 15px; }
  .composer-heading { align-items: flex-start; flex-direction: column; gap: 5px; }
  .composer-meta, .library-toolbar, .setup-grid { grid-template-columns: 1fr; }
  .composer-actions { align-items: stretch; flex-direction: column-reverse; }
  .composer-actions .primary-button { width: 100%; }
  .choice-grid, .pair-board { grid-template-columns: 1fr; }
  .answer-form { grid-template-columns: 1fr; }
  .pair-column { grid-template-columns: 1fr 1fr; }
  .question-card { min-height: 420px; padding: 20px 15px; }
  .question-prompt { margin-block: 38px 26px; }
  .setup-footer, .summary-actions { align-items: stretch; flex-direction: column; }
  .setup-footer .primary-button, .summary-actions .primary-button { width: 100%; }
}

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