:root {
  color-scheme: light;
  --paper: #f3efe5;
  --paper-deep: #e8e0cf;
  --ink: #18211b;
  --muted: #6c7067;
  --line: #cfc5b2;
  --red: #d9472f;
  --red-dark: #ab301f;
  --moss: #355b45;
  --lime: #dce97b;
  --white: #fffdf7;
  --shadow: 0 18px 48px rgb(40 32 22 / 10%);
  --radius: 22px;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --oral: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", "Arial Rounded MT Bold", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 49px, rgb(217 71 47 / 10%) 50px, transparent 51px),
    repeating-linear-gradient(0deg, transparent 0 31px, rgb(24 33 27 / 3%) 31px 32px),
    var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  min-height: 76px;
  padding: 0 max(28px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgb(24 33 27 / 14%);
  background: rgb(243 239 229 / 88%);
  backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: .12em; }
.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--red);
  font: 800 23px/1 var(--oral);
  transform: rotate(-5deg);
}

.desktop-nav { display: flex; gap: 6px; margin-left: 50px; }
.desktop-nav a { padding: 10px 14px; border-radius: 999px; color: var(--muted); font-size: 14px; font-weight: 700; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: var(--white); background: var(--ink); }
.top-note { margin: 0 0 0 auto; color: var(--muted); font: 600 13px var(--oral); letter-spacing: .04em; }
.sync-status-button { min-height: 34px; margin-left: 14px; padding: 6px 11px; border: 1px solid var(--line); border-radius: 999px; color: var(--moss); background: rgb(255 253 247 / 75%); font-size: 11px; font-weight: 850; cursor: pointer; }
.sync-status-button[data-state="offline"], .sync-status-button[data-state="pending"] { color: var(--red-dark); }
.sync-status-button[data-state="synced"] { color: var(--white); border-color: var(--moss); background: var(--moss); }
.sync-status-button:focus-visible { outline: 3px solid var(--lime); outline-offset: 2px; }

main { width: min(1124px, calc(100% - 40px)); margin: 0 auto; padding: 62px 0 110px; }
.page { animation: enter .32s ease both; }
@keyframes enter { from { opacity: 0; transform: translateY(8px); } }

.eyebrow { margin: 0 0 12px; color: var(--red-dark); font-size: 12px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 800px; margin-bottom: 14px; font-size: clamp(38px, 6vw, 78px); line-height: .98; letter-spacing: -.055em; }
h2 { margin-bottom: 14px; font-size: clamp(24px, 3vw, 34px); line-height: 1.05; letter-spacing: -.03em; }
h3 { margin-bottom: 8px; font-size: 18px; }
.lede { max-width: 640px; color: var(--muted); font-size: 17px; line-height: 1.6; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.phonetic { font-family: var(--oral); }

.today-session-grid { display: grid; }
.session-card, .reminder-card, .panel, .metric, .card-row, .reward-card {
  border: 1px solid rgb(24 33 27 / 15%);
  border-radius: var(--radius);
  background: rgb(255 253 247 / 82%);
  box-shadow: var(--shadow);
}

.session-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, .42fr); gap: 34px; align-items: end; padding: clamp(28px, 5vw, 46px); color: var(--white); background: var(--ink); }
.session-card .eyebrow { color: var(--lime); }
.duration { margin: 18px 0 5px; font-size: 74px; font-weight: 900; line-height: .9; letter-spacing: -.08em; }
.duration span { margin-left: 5px; font-size: 18px; letter-spacing: 0; }
.theme-chip { display: inline-flex; align-items: center; width: fit-content; margin-top: 14px; padding: 7px 11px; border: 1px solid rgb(255 255 255 / 20%); border-radius: 999px; color: #d8ded9; font-size: 12px; }
.session-theme-picker { display: grid; gap: 7px; margin: 20px 0; }
.session-theme-picker span { color: var(--lime); font-size: 11px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.session-theme-picker select { width: 100%; min-height: 44px; padding: 9px 34px 9px 12px; border: 1px solid rgb(255 255 255 / 24%); border-radius: 12px; color: var(--white); background: #253129; }

.btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 17px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  font-weight: 850;
  cursor: pointer;
  transition: transform .16s ease, background .16s ease, color .16s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible, .srs-rating:focus-visible { outline: 3px solid var(--lime); outline-offset: 3px; }
.btn-primary { color: var(--white); background: var(--red); border-color: var(--red); }
.btn-primary:hover { background: var(--red-dark); }
.btn-light { color: var(--ink); background: var(--lime); border-color: var(--lime); }
.btn-quiet { border-color: var(--line); color: var(--muted); }
.btn-sm { min-height: 38px; padding: 8px 13px; font-size: 13px; }
.btn-block { width: 100%; }

.reminder-card { margin-top: 22px; padding: clamp(24px, 4vw, 38px); }
.reminder-head, .section-head, .compact-reminder { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.reminder-head p, .section-head p { margin-bottom: 0; }
.reminder-form { display: grid; grid-template-columns: 170px 1fr 180px; gap: 24px; margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--line); }
.field { display: grid; align-content: start; gap: 8px; }
.field > span, .field legend, .field-heading > label { color: var(--muted); font-size: 12px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.field-heading { display: flex; width: fit-content; align-items: center; gap: 6px; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 10px 13px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: var(--white); }
.field textarea { line-height: 1.55; resize: vertical; }
fieldset.field { min-width: 0; margin: 0; padding: 0; border: 0; }
.days { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 2px; }
.day { position: relative; }
.day input { position: absolute; inset: 0; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.day span { display: grid; width: 41px; height: 41px; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--white); font-size: 12px; font-weight: 850; cursor: pointer; }
.day input:checked + span { color: var(--white); border-color: var(--moss); background: var(--moss); }
.reminder-actions { display: flex; flex-wrap: wrap; gap: 10px; grid-column: 1 / -1; }
.alarm-copy { display: flex; align-items: center; gap: 12px; grid-column: 1 / -1; padding: 14px; border: 1px dashed var(--line); border-radius: 14px; background: rgb(232 224 207 / 35%); }
.alarm-copy q { flex: 1; font-weight: 750; }
.compact-reminder strong { font-size: 15px; }

.page-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 34px; }
.page-head h1 { margin-bottom: 0; }
.bulk-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.oral-guide { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; padding: 14px 18px; border-left: 4px solid var(--red); border-radius: 0 12px 12px 0; background: rgb(255 253 247 / 64%); }
.oral-guide strong { flex: 0 0 auto; font-family: var(--oral); }
.oral-guide span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.catalog-tools { display: grid; grid-template-columns: minmax(220px, .8fr) minmax(260px, 1.2fr) auto; gap: 12px; align-items: end; margin-bottom: 18px; }
.catalog-count { min-width: 92px; padding-bottom: 14px; color: var(--moss); font-size: 13px; text-align: right; }
.custom-theme-panel { margin-bottom: 18px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: rgb(255 253 247 / 68%); }
.custom-theme-panel summary { display: grid; min-height: 32px; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 10px; list-style: none; font-weight: 850; cursor: pointer; }
.custom-theme-panel summary::-webkit-details-marker { display: none; }
.custom-theme-panel summary::before { content: "▶"; font-size: 13px; transition: transform .15s ease; }
.custom-theme-panel[open] summary::before { transform: rotate(90deg); }
.custom-theme-panel summary > b { display: grid; min-width: 30px; height: 30px; place-items: center; border-radius: 999px; color: var(--moss); background: rgb(53 91 69 / 9%); font-size: 12px; }
.custom-theme-content { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.custom-theme-hint { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.4; }
.deck-category summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; font-weight: 850; cursor: pointer; }
.add-theme-form { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; }
.custom-theme-list { display: flex; flex-wrap: wrap; gap: 7px; padding-top: 10px; border-top: 1px solid var(--line); }
.custom-theme-list span { padding: 6px 10px; border-radius: 999px; color: var(--moss); background: rgb(53 91 69 / 9%); font-size: 12px; font-weight: 800; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filters button[aria-pressed="true"] { color: var(--white); border-color: var(--ink); background: var(--ink); }
.card-filters { margin-bottom: 18px; }
.cards-list { display: grid; gap: 10px; }
.deck-categories { display: grid; gap: 12px; }
.deck-category { padding: 0 18px 18px; border: 1px solid rgb(24 33 27 / 15%); border-radius: 18px; background: rgb(255 253 247 / 55%); }
.deck-category[hidden] { display: none; }
.deck-category summary { min-height: 66px; flex-wrap: wrap; margin: 0 -18px; padding: 14px 18px; }
.deck-category-controls { display: flex; flex: 1 1 520px; align-items: center; justify-content: flex-end; gap: 12px; }
.deck-theme-review-buttons { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.deck-theme-review-button { display: inline-flex; min-height: 34px; align-items: center; gap: 6px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--moss); background: var(--white); font-size: 11px; font-weight: 850; cursor: pointer; }
.deck-theme-review-button:hover { color: var(--white); border-color: var(--moss); background: var(--moss); }
.deck-theme-review-button:focus-visible { outline: 3px solid var(--lime); outline-offset: 2px; }
.deck-category-count { color: var(--moss); font-size: 12px; white-space: nowrap; }
.deck-category[open] summary { margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.add-card-panel { margin-bottom: 18px; padding: 18px 20px; border: 1px dashed var(--line); border-radius: 16px; background: rgb(255 253 247 / 55%); }
.add-card-panel summary { font-weight: 850; cursor: pointer; }
.add-card-form { display: grid; grid-template-columns: 1fr 1.4fr 1fr auto; gap: 12px; align-items: end; margin-top: 18px; }
.csv-hint { margin: 14px 0 0; }
.srs-settings-panel { margin-bottom: 18px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: rgb(53 91 69 / 7%); }
.srs-settings-panel summary { color: var(--moss); font-weight: 850; cursor: pointer; }
.srs-settings-form { display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: 12px; align-items: end; margin-top: 18px; }
.note-check { display: flex; align-items: center; gap: 10px; min-height: 48px; font-size: 13px; font-weight: 750; cursor: pointer; }
.note-check input { width: 19px; height: 19px; flex: 0 0 auto; accent-color: var(--moss); }
.grammar-setting { display: flex; align-items: center; gap: 6px; grid-column: 1 / -2; }
.setting-help { position: relative; display: inline-flex; flex: 0 0 auto; align-items: center; text-transform: none; }
.setting-help-button { display: grid; width: 20px; height: 20px; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; color: var(--moss); background: rgb(255 253 247 / 70%); font-size: 12px; font-weight: 900; line-height: 1; cursor: help; }
.setting-help-button:hover, .setting-help-button:focus-visible { color: var(--white); border-color: var(--moss); background: var(--moss); outline: 2px solid var(--lime); outline-offset: 2px; }
.setting-help-tooltip { position: absolute; z-index: 60; top: calc(100% + 9px); left: 50%; width: min(290px, 72vw); padding: 11px 13px; visibility: hidden; border-radius: 11px; color: var(--white); background: var(--ink); box-shadow: 0 12px 30px rgb(0 0 0 / 20%); font-size: 12px; font-weight: 650; letter-spacing: 0; line-height: 1.5; opacity: 0; pointer-events: none; text-align: left; text-transform: none; transform: translateX(-18px) translateY(-3px); transition: opacity .14s ease, transform .14s ease, visibility .14s ease; }
.setting-help-tooltip::before { content: ""; position: absolute; bottom: 100%; left: 11px; border: 6px solid transparent; border-bottom-color: var(--ink); }
.setting-help:hover .setting-help-tooltip, .setting-help:focus-within .setting-help-tooltip { visibility: visible; opacity: 1; transform: translateX(-18px) translateY(0); }
.card-delete { display: block; margin-top: 8px; padding: 0; border: 0; color: var(--red-dark); background: none; font-size: 12px; font-weight: 800; cursor: pointer; }
.catalog-card-actions { display: flex; align-items: center; gap: 9px; margin-top: 8px; }
.catalog-card-actions .card-delete { margin-top: 0; }
.icon-edit-button { display: inline-grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; padding: 0; border: 1px solid var(--line); border-radius: 50%; color: var(--moss); background: var(--white); font-size: 16px; font-weight: 900; line-height: 1; cursor: pointer; }
.icon-edit-button:hover { border-color: var(--moss); background: rgb(53 91 69 / 8%); }
.icon-edit-button:focus-visible { outline: 3px solid var(--lime); outline-offset: 2px; }
.icon-edit-button:disabled { opacity: .45; cursor: default; }
.icon-review-button { font-size: 11px; }
.transcription-warning { display: block; width: fit-content; margin-top: 7px; padding: 3px 7px; border-radius: 999px; color: var(--red-dark); background: rgb(217 71 47 / 10%); font-size: 11px; font-weight: 850; }
.card-row { display: grid; grid-template-columns: 1fr auto auto; gap: 18px; align-items: center; padding: 18px 20px; box-shadow: none; }
.card-row > * { min-width: 0; }
.card-row[hidden] { display: none; }
.card-row p { margin-bottom: 3px; font-weight: 780; }
.answer { color: var(--moss); font: 750 18px var(--oral); }
.deck-status-badge { display: inline-flex; min-height: 38px; align-items: center; justify-content: center; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: rgb(255 253 247 / 70%); font-size: 12px; font-weight: 900; white-space: nowrap; }
.theme-label { min-width: 95px; color: var(--muted); font-size: 12px; text-align: right; }
.srs-note-meta { display: block; margin-top: 7px; color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .03em; }
.srs-note-actions { display: flex; align-items: center; gap: 7px; }
.deck-note-summary { display: flex; min-width: 0; align-items: center; gap: 15px; }
.deck-note-summary > div { min-width: 0; }
.srs-note-thumbnail { width: 72px; height: 72px; flex: 0 0 auto; border: 1px solid var(--line); border-radius: 14px; background: var(--paper); object-fit: contain; }

.note-editor-settings { display: grid; grid-template-columns: 1fr 1fr minmax(230px, .8fr); gap: 14px; align-items: end; margin-bottom: 16px; padding: 22px; border-radius: 18px; color: var(--white); background: var(--ink); }
.note-editor-settings .field > span { color: var(--lime); }
.note-editor-settings .field input, .note-editor-settings .field select { border-color: rgb(255 255 255 / 22%); color: var(--white); background: #253129; }
.note-editor-settings .note-check { color: #d8ded9; }
.note-editor-hint { margin-bottom: 18px; padding: 14px 17px; border-left: 4px solid var(--red); border-radius: 0 12px 12px 0; background: rgb(255 253 247 / 72%); color: var(--muted); font-size: 13px; line-height: 1.55; }
.note-sides-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.note-side-editor { min-width: 0; margin: 0; padding: clamp(20px, 3vw, 28px); border: 1px solid rgb(24 33 27 / 15%); border-radius: var(--radius); background: rgb(255 253 247 / 82%); box-shadow: var(--shadow); }
.note-side-editor legend { padding: 0 9px; color: var(--red-dark); font-size: 14px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.note-image-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.note-file-field input { padding: 8px; font-size: 12px; }
.note-image-preview { display: grid; min-height: 150px; place-items: center; gap: 10px; margin-top: 14px; padding: 12px; overflow: hidden; border: 1px dashed var(--line); border-radius: 14px; background: rgb(232 224 207 / 28%); color: var(--muted); font-size: 12px; }
.note-image-preview img { display: block; width: 100%; max-height: 240px; border-radius: 10px; object-fit: contain; }
.note-editor-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.archived-notes-panel { margin-bottom: 18px; padding: 18px 20px; border: 1px dashed var(--line); border-radius: 16px; background: rgb(232 224 207 / 32%); }
.archived-notes-panel summary { font-weight: 850; cursor: pointer; }
.archived-notes-panel > p { margin: 10px 0; }
.archived-notes-list { display: grid; }
.archived-note-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 11px 0; border-top: 1px solid var(--line); }
.archived-note-row span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
.metric { padding: 26px; box-shadow: none; }
.metric strong { display: block; margin-bottom: 6px; font-size: clamp(34px, 5vw, 58px); line-height: 1; letter-spacing: -.06em; }
.metric span { color: var(--muted); font-size: 13px; }
.panel { padding: clamp(24px, 4vw, 38px); box-shadow: none; }
.box-chart { display: grid; gap: 12px; margin-top: 24px; }
.box-line { display: grid; grid-template-columns: 110px 1fr 38px; gap: 12px; align-items: center; font-size: 13px; }
.bar { height: 12px; overflow: hidden; border-radius: 999px; background: var(--paper-deep); }
.bar i { display: block; height: 100%; border-radius: inherit; background: var(--moss); }
.history { display: grid; gap: 0; margin-top: 18px; }
.history-row { display: grid; grid-template-columns: 110px 1fr auto; gap: 15px; padding: 15px 0; border-top: 1px solid var(--line); font-size: 14px; }
.hardest-list { display: grid; margin-top: 18px; }
.hard-card-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 0; border-top: 1px solid var(--line); }
.hard-card-row div { min-width: 0; }
.hard-card-row strong, .hard-card-row span { display: block; }
.hard-card-row strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hard-card-row span { margin-top: 5px; color: var(--muted); font-size: 12px; }
.hard-card-row.is-na { min-height: 72px; color: var(--muted); }
.hard-card-row.is-na strong { color: var(--muted); letter-spacing: .08em; }

.study-shell { width: min(720px, 100%); margin: 0 auto; }
.study-top { display: flex; align-items: center; gap: 14px; margin-bottom: 30px; }
.study-top .bar { flex: 1; }
.study-card { position: relative; min-height: 400px; display: grid; place-items: center; padding: clamp(30px, 8vw, 70px); border: 1px solid rgb(24 33 27 / 16%); border-radius: 30px; background: var(--white); box-shadow: var(--shadow); text-align: center; }
.exercise-card-tools { position: absolute; z-index: 2; top: 18px; right: 18px; display: flex; align-items: center; gap: 8px; }
.view-count-badge { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: rgb(255 253 247 / 88%); font-size: 11px; font-weight: 850; white-space: nowrap; }
.prompt { margin: 14px 0 0; font-size: clamp(32px, 6vw, 56px); font-weight: 900; letter-spacing: -.04em; }
.study-answer { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.study-answer strong { display: block; font: 850 clamp(32px, 7vw, 62px)/1.2 var(--oral); }
.study-actions { display: flex; justify-content: center; gap: 10px; margin-top: 22px; }
.study-actions .btn { min-width: 140px; }
.srs-study-content { width: min(100%, 620px); }
.srs-side { display: grid; justify-items: center; gap: 18px; }
.srs-side-image { display: block; width: min(100%, 440px); max-height: 300px; border-radius: 16px; object-fit: contain; }
.srs-side-text { font: 850 clamp(29px, 6vw, 54px)/1.25 var(--oral); letter-spacing: -.035em; overflow-wrap: anywhere; }
.study-answer .srs-side-text { color: var(--moss); font-size: clamp(27px, 5vw, 46px); }
.sr { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.srs-rating-actions { display: grid; grid-template-columns: repeat(4, 1fr); }
.srs-rating { display: grid; min-width: 0; min-height: 76px; place-items: center; align-content: center; gap: 4px; padding: 10px; border: 1px solid var(--line); border-radius: 16px; color: var(--ink); background: var(--white); cursor: pointer; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.srs-rating:hover { transform: translateY(-2px); }
.srs-rating strong, .srs-rating span { display: block; }
.srs-rating strong { font-size: 14px; }
.srs-rating span { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.srs-rating-again { border-color: #d96c5f; background: #f8ded9; }
.srs-rating-hard { border-color: #c89756; background: #f5e8d2; }
.srs-rating-good { border-color: #6d9a7b; background: #dce9df; }
.srs-rating-easy { border-color: #a6b442; background: #edf2bd; }
.study-finish { margin-top: 14px; text-align: center; }
.learning-wait-card h1 { max-width: 560px; margin-bottom: 20px; font-size: clamp(38px, 7vw, 64px); }
.learning-wait-card p:last-child { margin: 0; color: var(--muted); font-size: 17px; }
.learning-wait-card strong { color: var(--moss); font-variant-numeric: tabular-nums; }

.reward-card { position: relative; overflow: hidden; padding: clamp(32px, 7vw, 70px); }
.reward-card::before { content: "BONUS"; position: absolute; right: -10px; top: 20px; color: rgb(217 71 47 / 8%); font: 900 62px var(--oral); transform: rotate(8deg); }
.reward-expression { position: relative; margin: 28px 0 5px; font: 900 clamp(38px, 8vw, 76px)/1.1 var(--oral); letter-spacing: -.05em; }
.reward-meaning { margin: 22px 0 5px; font-size: 20px; font-weight: 850; }
.reward-context { max-width: 600px; color: var(--muted); line-height: 1.6; }

.word-total { flex: 0 0 auto; padding: 8px 12px; border-radius: 999px; color: var(--white); background: var(--moss); font-size: 13px; font-weight: 850; }
.word-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 18px; }
.word-metrics article { padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: rgb(255 253 247 / 70%); }
.word-metrics strong { display: block; margin-bottom: 5px; font-size: 32px; line-height: 1; letter-spacing: -.04em; }
.word-metrics span { color: var(--muted); font-size: 12px; }
.word-tools { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 18px; }
.word-theme-control, .word-search-control { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); }
.word-theme-control small, .word-search-control small { color: var(--moss); font-weight: 750; }
.word-search-results { margin-bottom: 18px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: rgb(255 253 247 / 72%); }
.word-search-results[hidden] { display: none; }
.word-search-results h2 { margin-bottom: 0; }
.word-search-list { display: grid; max-height: 390px; margin-top: 18px; overflow: auto; border-top: 1px solid var(--line); }
.word-search-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 2px; border-bottom: 1px solid var(--line); }
.word-search-row[hidden] { display: none; }
.word-search-row > div { display: grid; min-width: 0; gap: 3px; }
.word-search-row strong { color: var(--moss); font-size: 18px; }
.word-search-row span { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.word-search-results .empty { padding: 28px 16px; }
.word-setup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.word-mode-card { display: flex; min-height: 350px; flex-direction: column; justify-content: space-between; gap: 24px; padding: clamp(24px, 4vw, 34px); border-radius: var(--radius); box-shadow: var(--shadow); }
.word-mode-card p:not(.eyebrow) { color: inherit; opacity: .72; line-height: 1.55; }
.word-mode-card--count { color: var(--white); background: var(--ink); }
.word-mode-card--count .eyebrow, .word-mode-card--count .field > span { color: var(--lime); }
.word-mode-card--count .field select { border-color: rgb(255 255 255 / 22%); color: var(--white); background: #253129; }
.word-mode-card--timer { border: 1px solid rgb(217 71 47 / 18%); background: #f9d8cd; }
.word-difficulty-selector { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0 0; padding: 0; border: 0; }
.word-difficulty-selector legend { margin-bottom: 10px; color: var(--muted); font-size: 12px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.word-difficulty-selector label { position: relative; min-width: 0; cursor: pointer; }
.word-difficulty-selector input { position: absolute; z-index: 1; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.word-difficulty-selector label > span { display: grid; min-height: 78px; align-content: center; gap: 4px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 15px; background: rgb(255 253 247 / 70%); transition: border-color .15s ease, background .15s ease, transform .15s ease; }
.word-difficulty-selector label:hover > span { transform: translateY(-1px); }
.word-difficulty-selector input:checked + span { color: var(--white); border-color: var(--moss); background: var(--moss); }
.word-difficulty-selector input:focus-visible + span { outline: 3px solid var(--lime); outline-offset: 3px; }
.word-difficulty-selector strong, .word-difficulty-selector small { display: block; }
.word-difficulty-selector small { color: var(--muted); font-size: 11px; line-height: 1.4; }
.word-difficulty-selector input:checked + span small { color: #d9e2dc; }
.word-custom-panel { margin-top: 18px; padding: 22px; border: 1px dashed var(--line); border-radius: 18px; background: rgb(255 253 247 / 60%); }
.word-custom-panel summary { font-size: 17px; font-weight: 850; cursor: pointer; }
.add-word-form { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 12px; align-items: end; margin: 20px 0 12px; }
.custom-word-list { display: grid; gap: 8px; margin-top: 16px; }
.custom-word-list[hidden] { display: none; }
.custom-word-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--white); }
.custom-word-row div { display: grid; gap: 2px; }
.custom-word-row strong { color: var(--moss); font-size: 18px; }
.custom-word-row span { color: var(--muted); font-size: 12px; }
.custom-word-actions { display: flex !important; align-items: center; gap: 10px !important; }
.custom-word-actions .card-delete { margin-top: 0; }

.word-quiz-shell { width: min(760px, 100%); margin: 0 auto; }
.word-quiz-top { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; margin-bottom: 12px; }
.word-quiz-top strong { min-width: 52px; font-variant-numeric: tabular-nums; text-align: right; }
.word-score { display: flex; justify-content: space-between; gap: 15px; margin-bottom: 24px; color: var(--muted); font-size: 13px; }
.word-question-card { position: relative; padding: clamp(28px, 6vw, 54px); border: 1px solid rgb(24 33 27 / 16%); border-radius: 30px; background: var(--white); box-shadow: var(--shadow); text-align: center; }
.word-prompt { max-width: none; margin: 34px 0 42px; color: var(--ink); font-size: clamp(42px, 9vw, 82px); line-height: 1.05; letter-spacing: -.05em; }
.word-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.word-choice { min-height: 68px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 16px; color: var(--ink); background: var(--paper); font-size: 16px; font-weight: 820; cursor: pointer; transition: border-color .14s ease, background .14s ease, transform .14s ease; }
.word-choice:hover:not(:disabled) { border-color: var(--moss); transform: translateY(-1px); }
.word-choice:disabled { opacity: 1; cursor: default; }
.word-choice.is-correct { color: #123d25; border-color: #65a979; background: #ccebd4; }
.word-choice.is-wrong { color: #671d16; border-color: #d96c5f; background: #f4c8c1; }
.word-written-form { display: grid; gap: 9px; text-align: left; }
.word-written-form > label { color: var(--muted); font-size: 12px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.word-written-form > div { display: grid; grid-template-columns: 1fr auto; gap: 9px; }
.word-written-form input { min-width: 0; min-height: 52px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 14px; color: var(--ink); background: var(--paper); font-size: 17px; }
.word-feedback { min-height: 24px; margin: 20px 0 0; font-weight: 850; }
.word-feedback.is-correct { color: #28623a; }
.word-feedback.is-wrong { color: var(--red-dark); }

.word-result-shell { width: min(760px, 100%); margin: 0 auto; }
.word-result-card { padding: clamp(30px, 7vw, 64px); border-radius: 28px; color: var(--white); background: var(--ink); box-shadow: var(--shadow); }
.word-result-card .eyebrow { color: var(--lime); }
.word-result-card h1 { max-width: none; margin: 24px 0; color: var(--lime); font-size: clamp(54px, 10vw, 92px); }
.word-result-card h1 span { display: block; margin-top: 8px; color: var(--white); font-size: 20px; letter-spacing: 0; }
.word-result-card > p:not(.eyebrow) { color: #c9d0ca; line-height: 1.6; }
.word-result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 28px 0; }
.word-result-stats div { padding: 16px; border: 1px solid rgb(255 255 255 / 15%); border-radius: 14px; }
.word-result-stats strong, .word-result-stats span { display: block; }
.word-result-stats strong { margin-bottom: 4px; font-size: 25px; }
.word-result-stats span { color: #aeb8b0; font-size: 11px; }
.word-result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.word-result-card .word-result-actions .btn:not(.btn-primary) { color: var(--white); border-color: rgb(255 255 255 / 35%); }

.word-editor-dialog, .deck-card-editor-dialog { width: min(520px, calc(100% - 28px)); padding: 0; border: 0; border-radius: 22px; color: var(--ink); background: var(--white); box-shadow: 0 30px 90px rgb(24 33 27 / 32%); }
.word-editor-dialog::backdrop, .deck-card-editor-dialog::backdrop { background: rgb(24 33 27 / 58%); backdrop-filter: blur(3px); }
.word-editor-form { display: grid; gap: 16px; padding: clamp(22px, 5vw, 34px); }
.word-editor-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.word-editor-head h2 { margin-bottom: 0; }
.word-editor-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 4px; }
.cloud-sync-dialog { width: min(520px, calc(100% - 28px)); padding: 0; border: 0; border-radius: 22px; color: var(--ink); background: var(--white); box-shadow: 0 30px 90px rgb(24 33 27 / 32%); }
.cloud-sync-dialog::backdrop { background: rgb(24 33 27 / 58%); backdrop-filter: blur(3px); }
.cloud-sync-panel { display: grid; gap: 16px; padding: clamp(22px, 5vw, 34px); }
.cloud-sync-panel header { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.cloud-sync-panel h2 { margin: 0; }
.cloud-sync-panel p { margin: 0; color: var(--muted); line-height: 1.55; }
.cloud-sync-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.cloud-sync-transfer { display: flex; flex-wrap: wrap; gap: 9px; padding-top: 14px; border-top: 1px solid var(--line); }
.cloud-sync-error { color: var(--red-dark) !important; font-weight: 750; }

.empty { padding: 55px 20px; border: 1px dashed var(--line); border-radius: var(--radius); text-align: center; color: var(--muted); }
.mobile-nav { display: none; }
.toast { position: fixed; z-index: 50; right: 22px; bottom: 22px; max-width: 360px; padding: 14px 18px; border-radius: 14px; color: var(--white); background: var(--ink); box-shadow: var(--shadow); font-weight: 750; }

@media (max-width: 760px) {
  body { background-position-x: -26px; }
  .topbar { min-height: 62px; padding: 0 18px; }
  .desktop-nav, .top-note { display: none; }
  .sync-status-button { margin-left: auto; }
  main { width: min(100% - 28px, 680px); padding: 36px 0 100px; }
  .session-card { grid-template-columns: 1fr; gap: 22px; }
  .reminder-head, .page-head { align-items: flex-start; flex-direction: column; }
  .bulk-actions { justify-content: flex-start; }
  .oral-guide { align-items: flex-start; flex-direction: column; gap: 5px; }
  .catalog-tools { grid-template-columns: 1fr 1fr; }
  .word-tools { grid-template-columns: 1fr; }
  .catalog-count { grid-column: 1 / -1; padding: 0; text-align: left; }
  .reminder-form { grid-template-columns: 1fr 1fr; }
  .reminder-form fieldset, .alarm-copy, .reminder-actions { grid-column: 1 / -1; }
  .alarm-copy { align-items: flex-start; flex-direction: column; }
  .metrics { grid-template-columns: 1fr; }
  .word-metrics { grid-template-columns: repeat(3, 1fr); }
  .word-metrics article { padding: 16px 12px; }
  .word-metrics strong { font-size: 27px; }
  .word-setup-grid { grid-template-columns: 1fr; }
  .word-mode-card { min-height: 320px; }
  .add-word-form { grid-template-columns: 1fr 1fr; }
  .metric { display: flex; align-items: center; justify-content: space-between; }
  .metric strong { margin: 0; }
  .card-row { grid-template-columns: 1fr auto; }
  .srs-note-actions { grid-column: 1 / -1; justify-content: flex-start; }
  .note-editor-settings { grid-template-columns: 1fr 1fr; }
  .note-editor-settings .note-check { grid-column: 1 / -1; }
  .note-sides-grid { grid-template-columns: 1fr; }
  .srs-settings-form { grid-template-columns: 1fr 1fr; }
  .grammar-setting { grid-column: 1 / -1; }
  .setting-help-tooltip { position: fixed; top: auto; right: auto; bottom: 94px; left: 50%; width: calc(100vw - 36px); transform: translateX(-50%) translateY(5px); }
  .setting-help-tooltip::before { display: none; }
  .setting-help:hover .setting-help-tooltip, .setting-help:focus-within .setting-help-tooltip { transform: translateX(-50%) translateY(0); }
  .srs-rating-actions { grid-template-columns: 1fr 1fr; }
  .add-card-form { grid-template-columns: 1fr 1fr; }
  .add-card-form .btn { align-self: end; }
  .theme-label { display: none; }
  .history-row { grid-template-columns: 80px 1fr; }
  .history-row span:last-child { display: none; }
  .mobile-nav {
    position: fixed;
    z-index: 30;
    right: 12px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    left: 12px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 6px;
    border: 1px solid rgb(255 255 255 / 12%);
    border-radius: 18px;
    color: #d7dcd8;
    background: rgb(24 33 27 / 94%);
    box-shadow: 0 12px 34px rgb(0 0 0 / 25%);
    backdrop-filter: blur(12px);
  }
  .mobile-nav a { display: grid; min-height: 50px; place-items: center; align-content: center; gap: 2px; border-radius: 12px; font-size: 10px; font-weight: 800; }
  .mobile-nav a span { font: 750 16px var(--oral); }
  .mobile-nav a[aria-current="page"] { color: var(--ink); background: var(--lime); }
  .toast { right: 14px; bottom: 86px; left: 14px; max-width: none; }
}

@media (max-width: 430px) {
  .reminder-form { grid-template-columns: 1fr; }
  .reminder-form > * { grid-column: 1; }
  .compact-reminder { align-items: flex-start; flex-direction: column; }
  .study-actions { flex-direction: column; }
  .study-actions .btn { width: 100%; }
  .srs-rating-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .note-editor-settings, .note-image-fields, .srs-settings-form { grid-template-columns: 1fr; }
  .note-editor-settings .note-check, .grammar-setting { grid-column: 1; }
  .hard-card-row { align-items: flex-start; flex-direction: column; }
  .archived-note-row { align-items: flex-start; flex-direction: column; }
  .add-card-form { grid-template-columns: 1fr; }
  .catalog-tools { grid-template-columns: 1fr; }
  .deck-category { padding-right: 12px; padding-left: 12px; }
  .deck-category summary { align-items: flex-start; flex-direction: column; margin-right: -12px; margin-left: -12px; padding-right: 12px; padding-left: 12px; }
  .deck-category-controls { width: 100%; flex-basis: auto; align-items: flex-start; flex-direction: column; }
  .deck-theme-review-buttons { justify-content: flex-start; }
  .add-theme-form { grid-template-columns: 1fr; }
  .catalog-count { grid-column: 1; }
  .card-row { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .card-row .deck-status-badge { width: fit-content; justify-self: start; }
  .srs-note-actions, .catalog-card-actions { flex-wrap: wrap; grid-column: 1; }
  .word-score { flex-wrap: wrap; }
  .word-metrics { grid-template-columns: 1fr; }
  .word-metrics article { display: flex; align-items: center; justify-content: space-between; }
  .add-word-form { grid-template-columns: 1fr; }
  .word-choices { grid-template-columns: 1fr; }
  .word-question-card { padding: 26px 20px; }
  .word-difficulty-selector { grid-template-columns: 1fr; }
  .word-difficulty-selector label > span { min-height: 66px; }
  .word-prompt { margin: 24px 0 30px; }
  .word-written-form > div { grid-template-columns: 1fr; }
  .word-written-form .btn { width: 100%; }
  .exercise-card-tools { position: static; justify-content: flex-end; margin: -8px 0 22px; }
  .study-card { align-content: center; }
  .word-result-stats { grid-template-columns: 1fr; }
}

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