:root { color-scheme: light; --ink: #282b27; --muted: #777b74; --paper: #f7f3eb; --panel: #fffdfa; --line: #deded4; --green: #688b6d; --green-dark: #46694e; --light-green: #e8f0e6; --error: #b74f44; --error-bg: #f9ebe8; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow: hidden; background: var(--paper); color: var(--ink); font-family: 'DM Sans', Arial, sans-serif; -webkit-font-smoothing: antialiased; }
button, textarea, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, textarea:focus-visible, input:focus-visible, a:focus-visible { outline: 3px solid #9fbd9e; outline-offset: 3px; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.app-shell { display: flex; flex-direction: column; max-width: 1440px; height: 100vh; height: 100dvh; margin: auto; padding: 0 8.25%; }
.site-header { display: flex; flex: none; align-items: center; justify-content: space-between; height: 98px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font-size: 23px; font-weight: 700; letter-spacing: -1.8px; }
.brand-mark { color: var(--green); font-size: 29px; line-height: 1; font-weight: 400; }
.brand-accent { margin-left: 3px; color: var(--green); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.github-link { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #b9cbb4; border-radius: 50%; background: #fffdfa; color: var(--green-dark); text-decoration: none; }
.github-link:hover { background: var(--light-green); }
.help-button { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #b9cbb4; border-radius: 50%; background: #fffdfa; color: var(--green-dark); font-size: 19px; font-weight: 700; line-height: 1; }
.help-button:hover { background: var(--light-green); }
.field-label { font-size: 11px; font-weight: 700; letter-spacing: 1.75px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: 'Playfair Display', Georgia, serif; font-weight: 500; }
main { display: flex; flex: 1; flex-direction: column; min-height: 0; }
.workspace { display: flex; flex: 1; flex-direction: column; min-height: 0; margin: 36px 0; background: var(--panel); border: 1px solid #e7e4db; box-shadow: 0 13px 42px rgba(48, 46, 36, .045); border-radius: 7px; overflow: hidden; }
.setup-view, .mode-panel { display: flex; flex: 1; flex-direction: column; min-height: 0; padding: 30px 58px 45px; }
.practice-view { display: flex; flex: 1; flex-direction: column; min-height: 0; }
h2 { margin: 10px 0 10px; font-size: clamp(31px, 3vw, 42px); line-height: 1.2; letter-spacing: -1.2px; }
.field-label { display: block; margin: 0 0 12px; color: #5a6058; }
textarea { display: block; width: 100%; min-height: 255px; padding: 22px 24px; resize: vertical; border: 1px solid #d9ddd4; border-radius: 4px; background: #fff; color: var(--ink); font-size: 16px; line-height: 1.75; }
#source-text { flex: 1 1 0; min-height: 0; overflow: auto; resize: none; }
textarea::placeholder, input::placeholder { color: #a7aba3; }
textarea:focus, input:focus { border-color: var(--green); outline: 2px solid #d5e5d2; outline-offset: 0; }
.editor-footer { display: flex; justify-content: space-between; gap: 16px; margin-top: 10px; color: #92958e; font-size: 12px; }
.form-error { margin: 18px 0 0; color: var(--error); font-size: 14px; }
.primary-button, .secondary-button { display: inline-flex; align-items: center; justify-content: center; gap: 30px; border-radius: 4px; font-weight: 700; transition: background .15s, transform .15s; }
.primary-button:hover, .secondary-button:hover { transform: translateY(-1px); }
.primary-button { margin-top: 32px; padding: 16px 23px; border: 1px solid var(--green-dark); background: var(--green-dark); color: #fff; font-size: 13px; }
.setup-view > .primary-button, .mode-panel > .primary-button { align-self: flex-start; flex: none; }
.primary-button:hover { background: #36563e; }
.primary-button span, .secondary-button span, .text-button span { font-size: 18px; line-height: .8; font-weight: 400; }
.practice-toolbar { display: flex; flex: none; align-items: center; justify-content: space-between; gap: 20px; padding: 0 58px; border-bottom: 1px solid var(--line); }
.mode-tabs { display: flex; gap: 35px; }
.mode-tab { padding: 24px 0 21px; border: none; border-bottom: 2px solid transparent; background: transparent; color: #9b9e97; font-size: 12px; font-weight: 700; letter-spacing: .3px; }
.mode-tab span { margin-left: 7px; font-size: 14px; }
.mode-tab[aria-selected="true"] { border-bottom-color: var(--green); color: var(--green-dark); }
.text-button { display: inline-flex; align-items: center; gap: 9px; padding: 8px 0; border: 0; background: transparent; color: var(--green-dark); font-size: 12px; font-weight: 700; }
.text-button:hover { text-decoration: underline; }
.reading-sheet { border: 1px solid #e4e5dd; border-radius: 4px; background: #fafbf7; }
.reading-sheet { flex: 1 1 0; min-height: 0; padding: 32px 36px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; font-family: 'Playfair Display', Georgia, serif; font-size: 21px; line-height: 1.85; }
.recitation-editor { position: relative; flex: 1 1 0; min-height: 0; overflow: hidden; border: 1px solid #d9ddd4; border-radius: 4px; background: #fff; }
.recitation-editor:focus-within { border-color: var(--green); outline: 2px solid #d5e5d2; }
.recitation-highlight, .recitation-input { position: absolute; inset: 0; width: 100%; height: 100%; min-height: 0; margin: 0; padding: 22px 24px; border: 0; border-radius: 0; overflow: auto; scrollbar-gutter: stable; white-space: pre-wrap; overflow-wrap: anywhere; font-family: 'DM Sans', Arial, sans-serif; font-size: 16px; font-weight: 400; letter-spacing: normal; line-height: 1.75; tab-size: 8; }
.recitation-highlight { z-index: 1; pointer-events: none; color: var(--ink); }
.recitation-highlight::-webkit-scrollbar { visibility: hidden; }
.recitation-input { z-index: 2; resize: none; background: transparent; color: transparent; -webkit-text-fill-color: transparent; caret-color: var(--ink); }
.recitation-input:focus { outline: none; border: 0; }
.recitation-input::placeholder { color: #a7aba3; -webkit-text-fill-color: #a7aba3; }
.recitation-input::selection { background: #cbdcc8; color: transparent; }
.recitation-progress { display: block; width: 100%; height: 6px; margin-top: 20px; overflow: hidden; border: 0; border-radius: 99px; background: var(--light-green); }
.recitation-progress::-webkit-progress-bar { border-radius: 99px; background: var(--light-green); }
.recitation-progress::-webkit-progress-value { border-radius: 99px; background: var(--green); transition: width .2s ease; }
.recitation-progress::-moz-progress-bar { border-radius: 99px; background: var(--green); }
.incorrect-word { padding: 0; border-bottom: 2px solid var(--error); background: var(--error-bg); color: var(--error); box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.recitation-feedback { min-height: 24px; margin: 10px 0 0; color: var(--error); font-size: 13px; font-weight: 600; }
.practice-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 15px; }
.secondary-button { padding: 13px 17px; border: 1px solid #bfd1ba; background: #fff; color: var(--green-dark); font-size: 12px; }
.secondary-button:hover { background: #f2f7f0; }
.completion { padding: 23px 0 6px; }
.completion-symbol { color: var(--green); font-size: 40px; }
.completion h3 { margin: 6px 0; font-size: 27px; }
.completion p { color: var(--muted); font-size: 14px; }
.help-dialog { width: min(540px, calc(100vw - 32px)); max-height: calc(100vh - 32px); padding: 0; overflow: auto; border: 1px solid #e0e2d9; border-radius: 8px; background: var(--panel); color: var(--ink); box-shadow: 0 24px 75px rgba(29, 39, 29, .2); }
.help-dialog::backdrop { background: rgba(30, 39, 31, .46); backdrop-filter: blur(2px); }
.help-content { position: relative; padding: 38px 42px 35px; }
.help-close-button { position: absolute; top: 22px; right: 24px; width: 34px; height: 34px; border: 0; border-radius: 50%; background: #f2f4ee; color: var(--green-dark); font-size: 25px; line-height: 1; }
.help-close-button:hover { background: var(--light-green); }
.help-kicker, .help-step span { color: var(--green-dark); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; }
.help-dialog h2 { margin: 14px 36px 17px 0; font-size: clamp(29px, 4vw, 39px); line-height: 1.18; letter-spacing: -1px; }
.help-dialog h2 em { color: var(--green); }
.help-intro, .help-step p { margin: 0; color: #62685e; font-size: 14px; line-height: 1.75; }
.help-step { margin-top: 23px; padding-top: 20px; border-top: 1px solid var(--line); }
.help-step p { margin-top: 8px; }
.help-note { margin: 23px 0 0; color: #8b9187; font-size: 12px; line-height: 1.6; }
@media (max-width: 700px) { .app-shell { padding: 0 20px; } .site-header { height: 75px; } .brand { font-size: 21px; } .workspace { margin: 22px 0 20px; } .setup-view, .mode-panel { padding: 23px 23px 36px; } .practice-toolbar { align-items: flex-start; flex-direction: column-reverse; gap: 0; padding: 10px 23px 0; } .mode-tabs { width: 100%; gap: 24px; } .mode-tab { padding-top: 16px; white-space: nowrap; } .practice-toolbar > .text-button { align-self: flex-end; } .reading-sheet { padding: 22px; font-size: 18px; } .recitation-highlight, .recitation-input { padding: 18px; } .editor-footer { flex-direction: column; gap: 2px; } .help-content { padding: 31px 26px 28px; } .help-close-button { top: 15px; right: 16px; } }
@media (max-width: 380px) { .brand { font-size: 18px; } .header-actions { gap: 6px; } }
@media (max-height: 420px) {
  .site-header { height: 56px; }
  .workspace { margin: 8px 0; }
  .setup-view, .mode-panel { padding: 12px 18px; }
  .field-label { margin-bottom: 6px; }
  .editor-footer { margin-top: 4px; }
  .primary-button { margin-top: 8px; padding: 10px 16px; }
  .practice-toolbar { padding-top: 0; }
  .mode-tab { padding-top: 8px; padding-bottom: 7px; }
  .practice-toolbar > .text-button { padding: 4px 0; }
  .reading-sheet { padding: 12px; }
  .recitation-highlight, .recitation-input { padding: 12px; }
  .recitation-progress { height: 4px; margin-top: 8px; }
  .recitation-feedback { min-height: 18px; margin-top: 5px; }
  .practice-actions { margin-top: 5px; }
  .secondary-button { padding: 8px 12px; }
  .completion { padding-top: 6px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }