:root{color:#211f1a;background:#f6f1e8;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button{border:0;font:inherit}.app-shell{min-height:100vh;padding:clamp(16px,3vw,40px)}.workspace{width:min(1120px,100%);min-height:calc(100vh - clamp(32px,6vw,80px));margin:0 auto;display:flex;flex-direction:column;gap:28px}.navbar{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:14px;align-items:center;padding-bottom:18px}.eyebrow,.script-label,.audio-state{margin:0;color:#706858;font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}h1{margin:0;font-size:clamp(2rem,5vw,4rem);line-height:.95;text-align:center}.icon-button{width:48px;height:48px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(33,31,26,.15);border-radius:999px;color:#5b5548;background:#ffffff7a;cursor:pointer;transition:transform .14s ease,background .14s ease,color .14s ease}.icon-button.active{color:#fffaf0;background:#1e4f47}.icon-button:hover{transform:translateY(-1px)}.nav-actions{display:flex;gap:10px;justify-content:flex-end}.mode-tabs{display:flex;padding:4px;border:1px solid rgba(33,31,26,.15);border-radius:999px;background:#ffffff7a}.tab{min-height:40px;padding:0 16px;border-radius:999px;color:#5b5548;background:transparent;cursor:pointer}.tab.active{color:#fffaf0;background:#1e4f47}.drill-layout{flex:1;display:flex}.prompt-panel,.settings-panel{border:1px solid rgba(33,31,26,.14);border-radius:8px;background:#fffcf4b8}.prompt-panel{width:100%;flex:1;min-height:520px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:clamp(24px,6vw,64px)}.kana-mark{margin:12px 0 18px;font-family:Hiragino Mincho ProN,Yu Mincho,"Noto Serif JP",serif;font-size:clamp(8rem,28vw,18rem);line-height:.95}.answer{min-height:64px;font-size:clamp(2rem,6vw,4rem);font-weight:800}.answer.revealed{color:#1e4f47}.romaji-input{width:min(220px,100%);min-height:58px;border:2px solid rgba(33,31,26,.16);border-radius:8px;background:#ffffffb8;color:#211f1a;font:inherit;font-size:clamp(1.35rem,4vw,2rem);font-weight:800;text-align:center;outline:none;transition:background .14s ease,border-color .14s ease,box-shadow .14s ease}.romaji-input:focus{border-color:#1e4f47;box-shadow:0 0 0 4px #1e4f4724}.romaji-input.correct{border-color:#2f8f58;background:#e3efe9}.romaji-input.incorrect{border-color:#c84c31;background:#f6ddd5}.actions{min-height:156px;display:flex;gap:12px;align-items:center;justify-content:center;margin-top:20px}.input-actions{min-height:70px;margin-top:12px}.input-feedback{width:70px;height:70px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;color:#fffaf0;font-size:2.25rem;font-weight:900;opacity:0;transform:scale(.92);transition:opacity .14s ease,transform .14s ease,background .14s ease}.input-feedback.correct,.input-feedback.incorrect{opacity:1;transform:scale(1)}.input-feedback.correct{background:#2f8f58}.input-feedback.incorrect{background:#c84c31}.grade-actions{display:flex;flex-direction:column;gap:14px;align-items:center}.primary,.secondary,.reset,.grade-button{min-height:48px;padding:0 22px;border-radius:8px;cursor:pointer;transition:transform .14s ease,background .14s ease}.primary{color:#fffaf0;background:#1e4f47}.secondary{color:#211f1a;background:#e6d9c3}.primary:hover,.secondary:hover,.reset:hover,.grade-button:hover{transform:translateY(-1px)}.grade-button{width:112px;height:70px;min-height:70px;padding:0;display:inline-flex;align-items:center;justify-content:center;font-size:2.25rem;font-weight:900;line-height:1}.grade-button.forgot{color:#fff8f4;background:#c84c31}.grade-button.remembered{color:#fffaf0;background:#2f8f58}.audio-state{margin-top:18px;min-height:20px;letter-spacing:0;text-transform:none}.reset{color:#5a2016;background:#f2d6cc}.empty-state{display:flex;flex-direction:column;gap:18px;align-items:center;color:#706858;text-align:center}.settings-panel{padding:clamp(18px,4vw,34px)}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10;display:grid;place-items:center;padding:20px;background:#211f1a6b}.shortcut-dialog{width:min(420px,100%);border:1px solid rgba(33,31,26,.16);border-radius:8px;background:#fffaf0;box-shadow:0 24px 80px #211f1a38;padding:22px}.dialog-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.dialog-header h2{margin:0;font-size:1.6rem}.shortcut-list{display:grid;gap:10px;margin:22px 0 0}.shortcut-list div{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:center}.shortcut-list dt{min-height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(33,31,26,.14);border-radius:8px;background:#f6f1e8;font-weight:900}.shortcut-list dd{margin:0;color:#5b5548;font-weight:700}.settings-header{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;padding-bottom:0}.settings-header h2,.script-settings h3{margin:4px 0 0;text-transform:capitalize}.settings-header h2{font-size:clamp(1.6rem,4vw,2.6rem);line-height:1}.settings-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.settings-mode-tabs{width:fit-content;margin-top:18px}.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;margin-top:24px}.settings-footer{display:flex;justify-content:flex-end;margin-top:28px;padding-top:22px;border-top:1px solid rgba(33,31,26,.12)}.script-settings{min-width:0}.script-settings h3{color:#1e4f47;font-size:1.2rem}.kana-table{display:grid;gap:6px;margin-top:14px}.kana-table-row{display:grid;grid-template-columns:58px repeat(5,minmax(58px,1fr));gap:6px;align-items:stretch}.kana-table-row.header{min-height:28px;color:#706858;font-size:.78rem;font-weight:900;text-align:center;text-transform:uppercase}.kana-table-row.header span{display:flex;align-items:center;justify-content:center}.table-row-toggle,.kana-table-cell{min-height:58px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(33,31,26,.12);border-radius:8px;background:#ffffff70;cursor:pointer;transition:background .14s ease,border-color .14s ease,box-shadow .14s ease,transform .14s ease}.table-row-toggle{gap:6px;padding:6px;color:#1e4f47;font-weight:900}.kana-table-cell{flex-direction:column;gap:2px;padding:6px}.kana-table-cell.selected,.kana-toggle.selected{border-color:#1e4f47;background:#e3efe9;box-shadow:inset 0 0 0 2px #1e4f473d}.kana-table-cell:hover,.kana-toggle:hover{transform:translateY(-1px)}.kana-table-cell.empty{cursor:default;background:#211f1a0a}.kana-table-cell.empty:hover{transform:none}.kana-table-cell span{font-family:Hiragino Mincho ProN,Yu Mincho,"Noto Serif JP",serif;font-size:1.45rem;line-height:1}.kana-table-cell small{color:#706858;font-size:.72rem;font-weight:800}.row-settings{padding:22px 0 16px;border-bottom:1px solid rgba(33,31,26,.1)}.row-toggle,.kana-toggle{display:flex;align-items:center;cursor:pointer}.setting-toggle-button{width:fit-content;margin-top:18px;min-height:44px;padding:0 18px;border:1px solid rgba(33,31,26,.15);border-radius:999px;background:#ffffff7a;color:#1e4f47;cursor:pointer;font-weight:900;transition:background .14s ease,color .14s ease,transform .14s ease}.setting-toggle-button.active{color:#fffaf0;background:#1e4f47}.setting-toggle-button:hover{transform:translateY(-1px)}.row-toggle{gap:10px;font-weight:800}.row-toggle small{margin-left:auto;color:#706858;font-weight:700}.kana-toggles{display:grid;grid-template-columns:repeat(auto-fit,minmax(72px,1fr));gap:8px;margin-top:12px}.kana-toggle{gap:8px;min-height:44px;padding:8px;border:1px solid rgba(33,31,26,.12);border-radius:8px;background:#ffffff70;transition:background .14s ease,border-color .14s ease,box-shadow .14s ease,transform .14s ease}.kana-toggle span{font-family:Hiragino Mincho ProN,Yu Mincho,"Noto Serif JP",serif;font-size:1.35rem}.kana-toggle small{color:#706858;font-weight:700}input[type=checkbox]{width:18px;height:18px;accent-color:#1e4f47}.kana-table-cell input[type=checkbox],.kana-toggle input[type=checkbox]{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.kana-table-cell:has(input:focus-visible),.kana-toggle:has(input:focus-visible){outline:3px solid rgba(200,76,49,.5);outline-offset:2px}@media(max-width:780px){.settings-grid{grid-template-columns:1fr}.mode-tabs,.settings-header,.settings-actions{width:100%}.settings-header{flex-direction:column}.tab{flex:1;padding:0 8px}.prompt-panel{min-height:460px}.kana-table-row{grid-template-columns:44px repeat(5,minmax(44px,1fr));gap:4px}.table-row-toggle,.kana-table-cell{min-height:52px}.table-row-toggle{flex-direction:column}.kana-table-cell span{font-size:1.25rem}}