:root {
  --yumi-ink: #3d2354;
  --yumi-muted: #7b668b;
  --yumi-pink: #ff7eb6;
  --yumi-pink-dark: #d94f91;
  --yumi-purple: #8b5cf6;
  --yumi-lilac: #f3e8ff;
  --yumi-cream: #fff7ed;
  --yumi-card: rgba(255,255,255,.86);
  --yumi-line: rgba(116,80,148,.18);
  --yumi-success: #2f9f72;
  --yumi-warn: #e57a2d;
  --yumi-shadow: 0 24px 70px rgba(95, 49, 129, .18);
}
* { box-sizing: border-box; }
html { min-height: 100%; background: #fff7ed; }
body.yumi-page { min-height: 100%; margin: 0; color: var(--yumi-ink); font-family: 'Fredoka', Inter, system-ui, sans-serif; background: radial-gradient(circle at 12% 14%, rgba(255,126,182,.28), transparent 15rem), radial-gradient(circle at 88% 20%, rgba(139,92,246,.22), transparent 17rem), linear-gradient(145deg, #fff7ed 0%, #fbf0ff 52%, #eff6ff 100%); }
body.yumi-page::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .18; background-image: linear-gradient(45deg, rgba(139,92,246,.24) 25%, transparent 25%), linear-gradient(-45deg, rgba(255,126,182,.22) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, rgba(139,92,246,.18) 75%), linear-gradient(-45deg, transparent 75%, rgba(255,126,182,.16) 75%); background-position: 0 0, 0 12px, 12px -12px, -12px 0; background-size: 24px 24px; }
a { color: inherit; text-decoration: none; }
button, select, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .5; }
.yumi-shell { position: relative; z-index: 1; width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 22px 0 42px; }
.yumi-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 0 20px; }
.yumi-brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.yumi-brand img { width: 56px; height: 56px; object-fit: contain; filter: drop-shadow(0 8px 14px rgba(139,92,246,.18)); }
.yumi-brand strong { display: block; color: var(--yumi-pink-dark); font-size: clamp(1.4rem, 4vw, 2.1rem); line-height: 1; }
.yumi-brand span { display: block; margin-top: 4px; color: var(--yumi-muted); font-size: .82rem; }
.yumi-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.yumi-chip, .yumi-btn, .yumi-select, .yumi-search input { min-height: 42px; border: 1px solid var(--yumi-line); border-radius: 999px; background: rgba(255,255,255,.72); color: var(--yumi-ink); }
.yumi-chip { display: inline-flex; align-items: center; padding: 0 14px; font-size: .8rem; font-weight: 600; }
.yumi-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr); gap: 28px; align-items: center; padding: 34px; background: var(--yumi-card); border: 1px solid var(--yumi-line); border-radius: 22px; box-shadow: var(--yumi-shadow); backdrop-filter: blur(10px); }
.yumi-kicker { margin: 0 0 10px; color: var(--yumi-pink-dark); font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.yumi-hero h1 { margin: 0; color: var(--yumi-ink); font-size: clamp(2.4rem, 7vw, 5.4rem); line-height: .92; letter-spacing: 0; }
.yumi-hero p { max-width: 690px; margin: 18px 0 0; color: var(--yumi-muted); font-size: 1rem; line-height: 1.7; }
.yumi-proof { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 22px; }
.yumi-proof div, .yumi-panel, .yumi-card-box { background: rgba(255,255,255,.76); border: 1px solid var(--yumi-line); border-radius: 18px; }
.yumi-proof div { padding: 13px; }
.yumi-proof strong { display: block; color: var(--yumi-purple); font-size: 1.5rem; }
.yumi-proof span { display: block; margin-top: 3px; color: var(--yumi-muted); font-size: .72rem; line-height: 1.3; }
.yumi-mascot-card { min-height: 260px; display: grid; place-items: center; position: relative; overflow: hidden; background: linear-gradient(145deg, rgba(255,126,182,.2), rgba(139,92,246,.16)); border-radius: 20px; }
.yumi-mascot-card::after { content: "漢字"; position: absolute; right: -18px; bottom: -24px; color: rgba(61,35,84,.08); font-family: 'Noto Serif JP', serif; font-size: 8rem; line-height: 1; }
.yumi-mascot-card img { position: relative; z-index: 1; width: min(210px, 76%); height: auto; }
.yumi-grid { display: grid; grid-template-columns: 330px minmax(0, 1fr); gap: 20px; margin-top: 22px; align-items: start; }
.yumi-panel { padding: 18px; box-shadow: 0 14px 36px rgba(95, 49, 129, .1); }
.yumi-panel h2 { margin: 0 0 14px; font-size: 1.15rem; }
.yumi-app-title { margin: 0; color: var(--yumi-ink); font-size: clamp(2rem, 7vw, 3.3rem); line-height: .94; letter-spacing: 0; }
.yumi-app-copy { margin: 12px 0 18px; color: var(--yumi-muted); font-size: .92rem; line-height: 1.55; }
.yumi-controls { display: grid; gap: 12px; }
.yumi-field { display: grid; gap: 6px; }
.yumi-field label { color: var(--yumi-muted); font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.yumi-select, .yumi-search input { width: 100%; padding: 0 14px; outline: none; }
.yumi-select:focus-visible, .yumi-search input:focus-visible, .yumi-btn:focus-visible, .yumi-flashcard:focus-visible { outline: 3px solid rgba(255,126,182,.45); outline-offset: 3px; }
.yumi-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 14px; }
.yumi-stat { padding: 11px; background: rgba(139,92,246,.07); border-radius: 14px; }
.yumi-stat span { display: block; color: var(--yumi-muted); font-size: .72rem; }
.yumi-stat strong { display: block; margin-top: 4px; color: var(--yumi-ink); font-size: 1.45rem; }
.yumi-progress { margin-top: 18px; }
.yumi-progress-top { display: flex; justify-content: space-between; gap: 10px; color: var(--yumi-muted); font-size: .78rem; }
.yumi-progress-track { height: 10px; margin-top: 8px; overflow: hidden; background: rgba(139,92,246,.12); border-radius: 999px; }
.yumi-progress-bar { width: 0%; height: 100%; background: linear-gradient(90deg, var(--yumi-pink), var(--yumi-purple)); border-radius: inherit; transition: width .25s ease; }
.yumi-dashboard { margin-top: 16px; }
.yumi-dashboard h2 { margin: 0 0 10px; color: var(--yumi-ink); font-size: 1.05rem; }
.yumi-dashboard-grid { display: grid; gap: 8px; }
.yumi-dashboard-grid div { display: grid; gap: 2px; padding: 11px 12px; background: rgba(255,126,182,.09); border: 1px solid rgba(255,126,182,.18); border-radius: 14px; }
.yumi-dashboard-grid span { color: var(--yumi-muted); font-size: .72rem; font-weight: 700; text-transform: uppercase; }
.yumi-dashboard-grid strong { color: var(--yumi-ink); font-size: 1.18rem; }
.yumi-dashboard-grid em { color: var(--yumi-muted); font-size: .76rem; font-style: normal; }
.yumi-stage { display: grid; gap: 14px; }
.yumi-flashcard { min-height: 470px; width: 100%; padding: 0; color: inherit; background: transparent; border: 0; text-align: left; perspective: 1200px; }
.yumi-card-inner { position: relative; min-height: inherit; display: block; transform-style: preserve-3d; transition: transform .36s ease; }
.yumi-flashcard.is-flipped .yumi-card-inner { transform: rotateY(180deg); }
.yumi-face { position: absolute; inset: 0; min-height: inherit; display: flex; flex-direction: column; gap: 14px; padding: clamp(22px, 5vw, 34px); background: rgba(255,255,255,.88); border: 1px solid var(--yumi-line); border-radius: 26px; box-shadow: var(--yumi-shadow); overflow: hidden; backface-visibility: hidden; }
.yumi-face::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at 90% 10%, rgba(255,126,182,.2), transparent 15rem), radial-gradient(circle at 8% 92%, rgba(139,92,246,.15), transparent 14rem); }
.yumi-face > * { position: relative; z-index: 1; }
.yumi-face-back { transform: rotateY(180deg); background: rgba(255,252,247,.95); overflow-y: auto; }
.yumi-meta { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.yumi-pill { display: inline-flex; min-height: 28px; align-items: center; padding: 5px 10px; color: var(--yumi-pink-dark); background: rgba(255,126,182,.12); border: 1px solid rgba(255,126,182,.28); border-radius: 999px; font-size: .72rem; font-weight: 700; }
.yumi-kanji { margin: auto 0; display: block; text-align: center; color: var(--yumi-ink); font-family: 'Noto Serif JP', serif; font-size: clamp(8rem, 25vw, 14rem); line-height: .9; text-shadow: 2px 4px 0 rgba(255,126,182,.2); }
.yumi-front-reading { display: block; text-align: center; color: var(--yumi-pink-dark); font-family: 'Noto Serif JP', serif; font-size: clamp(1.4rem, 5vw, 2.2rem); }
.yumi-hint { margin-top: auto; color: var(--yumi-muted); font-size: .85rem; line-height: 1.45; text-align: center; }
.yumi-back-title { display: flex; align-items: center; gap: 14px; }
.yumi-back-title strong { color: var(--yumi-ink); font-family: 'Noto Serif JP', serif; font-size: 3rem; line-height: 1; }
.yumi-back-title span { display: block; color: var(--yumi-muted); }
.yumi-meaning { margin: 0; color: var(--yumi-pink-dark); font-size: clamp(1.8rem, 5vw, 2.6rem); line-height: 1.05; }
.yumi-detail-list { display: grid; gap: 10px; margin: 8px 0 0; padding: 0; list-style: none; }
.yumi-detail-list li { display: grid; gap: 3px; padding: 12px; background: rgba(139,92,246,.08); border-radius: 16px; }
.yumi-detail-list span { color: var(--yumi-muted); font-size: .75rem; font-weight: 700; text-transform: uppercase; }
.yumi-detail-list strong { color: var(--yumi-ink); font-size: 1rem; font-weight: 600; overflow-wrap: anywhere; }
.yumi-phrase { margin: auto 0 10px; color: var(--yumi-ink); font-family: 'Noto Serif JP', serif; font-size: clamp(2.5rem, 10vw, 4.4rem); line-height: 1.16; text-align: center; overflow-wrap: anywhere; }
.yumi-situation { margin: 10px 0 0; color: var(--yumi-pink-dark); font-size: 1.25rem; line-height: 1.3; text-align: center; }
.yumi-note { margin: 0; color: var(--yumi-muted); line-height: 1.55; }
.yumi-actions, .yumi-ratings { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.yumi-actions .yumi-btn:first-child { color: #fff; background: linear-gradient(90deg, var(--yumi-pink-dark), var(--yumi-purple)); border-color: transparent; }
.yumi-btn { min-height: 48px; padding: 0 14px; font-weight: 700; }
.yumi-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(95,49,129,.12); }
.yumi-btn.is-learned { color: white; background: var(--yumi-success); border-color: var(--yumi-success); }
.yumi-btn.is-difficult { color: white; background: var(--yumi-warn); border-color: var(--yumi-warn); }
.yumi-deck-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.yumi-deck { min-height: 84px; padding: 12px; display: grid; gap: 4px; text-align: left; border: 1px solid var(--yumi-line); border-radius: 16px; background: rgba(255,255,255,.72); color: var(--yumi-ink); }
.yumi-deck[aria-pressed="true"] { border-color: rgba(255,126,182,.8); background: rgba(255,126,182,.14); }
.yumi-deck strong { font-size: 1rem; }
.yumi-deck span { color: var(--yumi-muted); font-size: .75rem; line-height: 1.35; }
.yumi-status { min-height: 44px; padding: 12px 14px; color: var(--yumi-muted); background: rgba(255,255,255,.7); border: 1px solid var(--yumi-line); border-left: 4px solid var(--yumi-pink); border-radius: 16px; font-size: .86rem; line-height: 1.45; }
.yumi-footer { padding: 28px 0 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--yumi-muted); font-size: .82rem; }
.yumi-footer nav { display: flex; gap: 14px; flex-wrap: wrap; }
.yumi-campus { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 22px; }
.yumi-campus-card { min-height: 180px; padding: 18px; display: flex; flex-direction: column; gap: 10px; background: rgba(255,255,255,.78); border: 1px solid var(--yumi-line); border-radius: 20px; box-shadow: 0 12px 28px rgba(95,49,129,.08); }
.yumi-campus-card em { color: var(--yumi-pink-dark); font-style: normal; font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.yumi-campus-card strong { color: var(--yumi-ink); font-size: 1.25rem; line-height: 1.1; }
.yumi-campus-card span { color: var(--yumi-muted); line-height: 1.48; }
.yumi-campus-card b { margin-top: auto; color: var(--yumi-purple); font-size: .85rem; }
@media (max-width: 900px) { .yumi-shell { width: min(100% - 24px, 720px); } .yumi-header, .yumi-hero { display: block; } .yumi-nav { justify-content: flex-start; margin-top: 14px; } .yumi-mascot-card { margin-top: 22px; } .yumi-grid { grid-template-columns: 1fr; } .yumi-campus { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .yumi-shell { width: min(100% - 18px, 420px); padding-top: 12px; } .yumi-hero { padding: 22px; border-radius: 18px; } .yumi-proof, .yumi-actions, .yumi-ratings, .yumi-deck-grid, .yumi-campus { grid-template-columns: 1fr; } .yumi-flashcard, .yumi-card-inner, .yumi-face { min-height: 520px; } .yumi-kanji { font-size: min(42vw, 9rem); } .yumi-phrase { font-size: clamp(2rem, 12vw, 3.2rem); } }
@media (prefers-reduced-motion: reduce) { .yumi-card-inner, .yumi-progress-bar, .yumi-btn { transition: none; } }

/* Readable white action labels while retaining the Yumi color families. */
.yumi-btn.is-learned{background:#237B56}
.yumi-btn.is-difficult{background:#AD4E0C}