:root {
  --paper: #fffaf2;
  --ink: #263238;
  --muted: #667275;
  --line: #d8e2dc;
  --green: #2d7a62;
  --mint: #dff3ea;
  --coral: #e56856;
  --yellow: #f4c84a;
  --blue: #3f7fbd;
  --rose: #f8ded8;
  --panel: #ffffff;
  --shadow: 0 18px 48px rgba(35, 45, 55, 0.12);
  --page-max: 1440px;
  --layout-gap: 18px;
  --stage-padding: 22px;
  --reading-padding: 42px;
  --brand-title-size: 34px;
  --stage-title-size: 40px;
  --reading-font-size: 72px;
  --paragraph-font-size: 31px;
  --math-question-size: 32px;
  --hint-font-size: 18px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", sans-serif;
  letter-spacing: 0;
  line-height: 1.55;
}

button,
input,
textarea {
  font: inherit;
  letter-spacing: 0;
}

button {
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(45, 122, 98, 0.18);
}

input,
textarea {
  font-size: max(16px, 1rem);
  -webkit-tap-highlight-color: rgba(45, 122, 98, 0.14);
}

.app-shell {
  min-height: 100vh;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  background:
    linear-gradient(180deg, rgba(223, 243, 234, 0.7), rgba(255, 250, 242, 0.2) 34%),
    var(--paper);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  max-width: var(--page-max);
  margin: 0 auto 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--yellow);
  font-size: 24px;
  font-weight: 800;
}

.brand h1,
.practice-header h2 {
  margin: 0;
}

.brand h1 {
  font-size: var(--brand-title-size);
}

.eyebrow,
.section-label,
.read-label {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.session-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--green);
}

.icon-button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font-size: 22px;
}

.learning-layout {
  display: grid;
  grid-template-areas: "unit practice routine";
  grid-template-columns: minmax(220px, 270px) minmax(0, 1fr) minmax(220px, 280px);
  gap: var(--layout-gap);
  max-width: var(--page-max);
  margin: 0 auto;
}

.unit-panel {
  grid-area: unit;
}

.practice-stage {
  grid-area: practice;
}

.routine-panel {
  grid-area: routine;
}

.unit-panel,
.routine-panel {
  display: flex;
  flex-direction: column;
  gap: var(--layout-gap);
}

.visual-card,
.progress-card,
.practice-stage,
.routine-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.visual-card {
  position: relative;
  min-height: 172px;
  overflow: hidden;
  background: #e4effc;
}

.study-visual {
  display: block;
  width: 100%;
  height: 172px;
  object-fit: cover;
  object-position: center;
}

.progress-card,
.routine-card {
  padding: 16px;
}

.progress-ring {
  display: grid;
  width: 108px;
  height: 108px;
  margin: 10px auto;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--green) 0deg, var(--mint) 0deg);
}

.progress-ring span {
  display: grid;
  width: 76px;
  height: 76px;
  place-items: center;
  border-radius: 50%;
  background: var(--panel);
  font-size: 22px;
  font-weight: 900;
}

.progress-card p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
  text-align: center;
}

.mode-list {
  display: grid;
  gap: 8px;
}

.mode-button {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: center;
  width: 100%;
  min-height: 58px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  text-align: left;
}

.mode-button.active {
  border-color: var(--green);
  background: var(--mint);
}

.mode-icon {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: white;
  font-weight: 900;
}

.mode-button strong {
  display: block;
  font-size: 15px;
}

.mode-button span:last-child {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.practice-stage {
  min-height: 680px;
  padding: var(--stage-padding);
}

.practice-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.practice-header h2 {
  font-size: var(--stage-title-size);
}

.level-pill {
  min-width: 72px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--rose);
  color: #7d342c;
  font-weight: 900;
  text-align: center;
}

.reading-card {
  display: grid;
  min-height: 260px;
  align-content: center;
  padding: var(--reading-padding);
  border: 2px solid var(--ink);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(63, 127, 189, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(63, 127, 189, 0.08) 1px, transparent 1px),
    #fffef9;
  background-size: 38px 38px;
}

.reading-text {
  max-width: 920px;
  font-size: var(--reading-font-size);
  font-weight: 900;
  line-height: 1.35;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.reading-text.long-text {
  max-width: none;
  font-size: var(--paragraph-font-size);
  font-weight: 850;
  line-height: 1.75;
}

.english-hint {
  min-height: 28px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: var(--hint-font-size);
  font-weight: 700;
}

.math-question-panel {
  margin-top: 14px;
  padding: 18px;
  border: 2px solid rgba(63, 127, 189, 0.4);
  border-radius: 8px;
  background: #f7fbff;
}

.math-question-text {
  color: var(--ink);
  font-size: var(--math-question-size);
  font-weight: 900;
  line-height: 1.5;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.answer-panel {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fbff;
}

.answer-panel.locked {
  background: #fbfcff;
}

.answer-panel label,
.manual-panel label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 800;
}

.answer-row,
.manual-row,
.control-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.answer-row input {
  width: min(180px, 100%);
  min-height: 48px;
  padding: 8px 12px;
  border: 2px solid var(--line);
  border-radius: 8px;
  font-size: 22px;
  font-weight: 900;
}

.answer-row input:disabled {
  background: #edf2f7;
  color: var(--muted);
  cursor: not-allowed;
}

.answer-unit {
  min-width: 36px;
  color: var(--muted);
  font-size: 20px;
  font-weight: 900;
}

.answer-row button,
.manual-row button,
.primary-button,
.secondary-button {
  min-height: 56px;
  border-radius: 8px;
  font-weight: 900;
}

.answer-row button,
.manual-row button {
  padding: 0 18px;
  border: 0;
  background: var(--blue);
  color: white;
}

.answer-row button:disabled {
  background: #aebecb;
  color: #f8fafc;
  cursor: not-allowed;
}

.control-row {
  flex-wrap: wrap;
  margin: 18px 0;
}

.recording-status {
  min-height: 24px;
  margin: -6px 0 12px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 2px solid var(--ink);
}

.primary-button {
  background: var(--green);
  color: white;
}

.primary-button.listening {
  background: var(--coral);
}

.primary-button.processing {
  background: var(--blue);
}

.secondary-button {
  background: var(--panel);
  color: var(--ink);
}

.secondary-button:disabled,
.secondary-button.locked {
  border-color: #aebecb;
  background: #edf2f7;
  color: var(--muted);
  cursor: not-allowed;
}

.manual-panel {
  margin: 14px 0;
  padding: 14px;
  border: 1px dashed var(--blue);
  border-radius: 8px;
  background: #f7fbff;
}

.manual-row textarea {
  flex: 1;
  min-width: 0;
  padding: 12px;
  border: 2px solid var(--line);
  border-radius: 8px;
  resize: vertical;
}

.feedback-panel {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f6fff9;
}

.score-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.score-line strong {
  font-size: 22px;
}

#scoreValue {
  font-weight: 900;
}

#heardText {
  margin: 0 0 10px;
  color: var(--muted);
  font-weight: 700;
}

.reading-review-text {
  margin: 0 0 12px;
  padding: 12px;
  border: 1px solid rgba(229, 104, 86, 0.34);
  border-radius: 8px;
  background: #fff9f7;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.8;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.review-label {
  color: var(--muted);
  font-weight: 900;
}

.reading-error {
  color: #c62828;
  font-weight: 950;
}

.token-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.token-list span {
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--rose);
  color: #7d342c;
  font-weight: 900;
}

.coach-note,
.guardian-note,
.soft-feedback {
  margin: 10px 0 0;
  font-weight: 800;
}

.math-feedback {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border-radius: 8px;
}

.answer-lock {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  line-height: 1.5;
}

.answer-lock.locked {
  border: 1px dashed rgba(63, 127, 189, 0.45);
  background: #f6f9ff;
  color: var(--muted);
}

.answer-lock.unlocked {
  background: #e9f7ef;
  color: #14623f;
}

.math-feedback.pass {
  background: #e9f7ef;
  color: #14623f;
}

.math-feedback.fail {
  background: #fff1ee;
  color: #a2261d;
}

.math-result-badge {
  flex: 0 0 auto;
  padding: 4px 9px;
  border-radius: 8px;
  background: currentColor;
  color: white;
  font-size: 14px;
  font-weight: 950;
}

.guardian-note {
  color: var(--muted);
  font-size: 14px;
}

.routine-card ol,
.routine-card ul {
  margin: 8px 0 0;
  padding-left: 22px;
}

.routine-card li + li {
  margin-top: 8px;
}

.review-list li {
  color: var(--muted);
}

.quiet-card {
  background: #fffdf6;
}

.quiet-card p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.hidden {
  display: none !important;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

@media (max-width: 1320px) {
  :root {
    --page-max: 1120px;
    --stage-title-size: 36px;
    --reading-font-size: 68px;
    --paragraph-font-size: 30px;
    --math-question-size: 30px;
    --reading-padding: 36px;
  }

  .learning-layout {
    grid-template-areas:
      "practice unit"
      "practice routine";
    grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
    align-items: start;
  }

  .routine-panel {
    display: flex;
  }
}

@media (max-width: 1120px) {
  :root {
    --stage-title-size: 34px;
    --reading-font-size: 64px;
    --paragraph-font-size: 29px;
    --math-question-size: 29px;
    --layout-gap: 16px;
  }

  .learning-layout {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 290px);
  }

  .reading-card {
    min-height: 240px;
  }
}

@media (max-width: 900px) {
  :root {
    --brand-title-size: 30px;
    --stage-title-size: 32px;
    --reading-font-size: 60px;
    --paragraph-font-size: 28px;
    --math-question-size: 29px;
    --stage-padding: 18px;
    --reading-padding: 32px;
  }

  .learning-layout,
  .routine-panel {
    grid-template-columns: 1fr;
  }

  .learning-layout {
    grid-template-areas:
      "practice"
      "unit"
      "routine";
  }

  .practice-stage,
  .unit-panel,
  .routine-panel {
    order: initial;
  }

  .practice-stage {
    min-height: auto;
  }

  .unit-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(220px, 280px);
    align-items: stretch;
  }

  .unit-panel > section:last-child {
    grid-column: 1 / -1;
  }

  .visual-card {
    min-height: 190px;
  }

  .study-visual {
    height: 100%;
    min-height: 190px;
  }

  .mode-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .routine-panel {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .control-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (pointer: coarse) {
  .toggle,
  .icon-button,
  .mode-button,
  .primary-button,
  .secondary-button,
  .answer-row button,
  .manual-row button {
    min-height: 56px;
  }

  .toggle input {
    width: 24px;
    height: 24px;
  }

  .icon-button {
    width: 56px;
  }
}

@media (max-width: 760px) {
  :root {
    --brand-title-size: 28px;
    --stage-title-size: 30px;
    --reading-font-size: 54px;
    --paragraph-font-size: 25px;
    --math-question-size: 26px;
    --stage-padding: 14px;
    --reading-padding: 24px;
    --layout-gap: 14px;
  }

  .app-shell {
    padding: 12px;
  }

  .topbar,
  .session-tools,
  .answer-row,
  .manual-row {
    align-items: stretch;
    flex-direction: column;
  }

  .answer-unit {
    min-width: 0;
    align-self: flex-start;
  }

  .answer-row input {
    width: 100%;
  }

  .practice-stage {
    padding: var(--stage-padding);
  }

  .practice-header {
    flex-direction: column;
  }

  .reading-card {
    min-height: 230px;
  }

  .unit-panel {
    display: flex;
  }

  .unit-panel > section:last-child {
    grid-column: auto;
  }

  .visual-card {
    min-height: 164px;
  }

  .study-visual {
    height: 164px;
    min-height: 0;
  }

  .mode-list {
    grid-template-columns: 1fr;
  }

  .routine-panel {
    display: flex;
  }

  .primary-button,
  .secondary-button,
  .answer-row button,
  .manual-row button {
    width: 100%;
  }

  .control-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  :root {
    --brand-title-size: 24px;
    --stage-title-size: 26px;
    --reading-font-size: 44px;
    --paragraph-font-size: 22px;
    --math-question-size: 23px;
    --hint-font-size: 16px;
    --reading-padding: 20px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    font-size: 21px;
  }

  .practice-header {
    gap: 8px;
    margin-bottom: 12px;
  }

  .level-pill {
    min-width: 64px;
    padding: 7px 9px;
  }

  .reading-card {
    min-height: 210px;
  }

  .score-line {
    align-items: flex-start;
    flex-direction: column;
  }

  .math-feedback {
    align-items: flex-start;
    flex-direction: column;
  }
}