/* 치조음 'ㅅ' 소리 교정 워크시트 */

.ws-s {
  --ws-green: var(--color-primary, #0f766e);
  --ws-green-soft: rgba(var(--color-primary-rgb, 15, 118, 110), 0.08);
  --ws-green-border: rgba(var(--color-primary-rgb, 15, 118, 110), 0.18);
  --ws-warn-bg: #fff7ed;
  --ws-warn-border: #fdba74;
  --ws-warn-text: #9a3412;
  --ws-tip-bg: #f0fdfa;
  --ws-tip-border: rgba(15, 118, 110, 0.28);
  --ws-example-bg: #f8fafc;
  display: grid;
  gap: 36px;
  margin: 8px 0 8px;
  min-width: 0;
  max-width: 100%;
}

.ws-s__intro {
  display: grid;
  gap: 8px;
}

.ws-s__badge {
  margin: 0;
  display: inline-flex;
  width: fit-content;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--ws-green-soft);
  color: var(--ws-green);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.ws-s__hint {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #475569);
}

.ws-s__steps {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.ws-s__step {
  border: 1px solid var(--color-border, rgba(15, 118, 110, 0.12));
  border-radius: 14px;
  background: var(--color-card, #ffffff);
  overflow: hidden;
  min-width: 0;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ws-s__step[open] {
  border-color: var(--ws-green-border);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.ws-s__step summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  user-select: none;
}

.ws-s__step summary::-webkit-details-marker {
  display: none;
}

.ws-s__step summary::after {
  content: "+";
  margin-left: auto;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--ws-green);
  line-height: 1;
}

.ws-s__step[open] summary::after {
  content: "−";
}

.ws-s__step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ws-green);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
}

.ws-s__step-title {
  min-width: 0;
  font-size: 0.975rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-primary, #0f172a);
  line-height: 1.4;
}

.ws-s__step-body {
  padding: 0 18px 20px;
  display: grid;
  gap: 16px;
}

.ws-s__lead-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #475569);
}

.ws-s__def {
  margin: 0;
  display: grid;
  gap: 12px;
}

.ws-s__def > div {
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--ws-green-soft);
}

.ws-s__def dt {
  margin: 0 0 4px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ws-green);
}

.ws-s__def dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-text-primary, #0f172a);
}

.ws-s__callout {
  border-radius: 12px;
  padding: 14px 16px;
  border: 1px solid transparent;
}

.ws-s__callout-label {
  margin: 0 0 8px;
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.ws-s__callout ul {
  margin: 0;
  padding-left: 1.1em;
  display: grid;
  gap: 6px;
}

.ws-s__callout li {
  font-size: 0.9125rem;
  line-height: 1.55;
}

.ws-s__callout--warn {
  background: var(--ws-warn-bg);
  border-color: var(--ws-warn-border);
  color: var(--ws-warn-text);
}

.ws-s__callout--tip {
  background: var(--ws-tip-bg);
  border-color: var(--ws-tip-border);
  color: var(--color-text-primary, #0f172a);
}

.ws-s__callout--tip .ws-s__callout-label {
  color: var(--ws-green);
}

.ws-s__callout--example {
  background: var(--ws-example-bg);
  border-color: var(--color-border, rgba(15, 23, 42, 0.1));
}

.ws-s__callout--example .ws-s__callout-label {
  color: var(--ws-green);
}

.ws-s__example-text {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.7;
  letter-spacing: -0.02em;
  color: var(--color-text-primary, #0f172a);
}

.ws-s__checklist {
  list-style: none;
  padding-left: 0;
}

.ws-s__checklist label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.ws-s__checklist input {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.ws-s__word-group {
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px dashed var(--ws-green-border);
  background: #fff;
}

.ws-s__word-label {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ws-green);
  text-transform: none;
}

.ws-s__words {
  margin: 0 0 6px;
  font-size: 0.975rem;
  line-height: 1.7;
  color: var(--color-text-primary, #0f172a);
  letter-spacing: -0.01em;
}

.ws-s__words:last-child {
  margin-bottom: 0;
}

.ws-s__practice-card {
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--color-border, rgba(15, 118, 110, 0.12));
  background: #fff;
}

.ws-s__practice-card h3 {
  margin: 0 0 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-primary, #0f172a);
}

.ws-s__practice-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-text-secondary, #475569);
}

.ws-s__drill {
  font-size: 1.25rem !important;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ws-green) !important;
}

.ws-s__meta {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.8125rem;
  color: var(--color-text-muted, #64748b);
}

.ws-s__sentence-list {
  margin: 0;
  padding-left: 1.1em;
  display: grid;
  gap: 8px;
  color: var(--color-text-primary, #0f172a);
  font-size: 0.9375rem;
  line-height: 1.65;
}

.ws-s__bullet {
  margin: 0;
  padding-left: 1.1em;
  display: grid;
  gap: 10px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-text-secondary, #475569);
}

.ws-s__log {
  border: 1px solid var(--color-border, rgba(15, 118, 110, 0.12));
  border-radius: 16px;
  background: linear-gradient(180deg, #f8fffe 0%, #ffffff 40%);
  padding: 22px 18px;
  display: grid;
  gap: 18px;
  min-width: 0;
  max-width: 100%;
}

.ws-s__log-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
}

.ws-s__log-title {
  margin: 0 0 6px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-primary, #0f172a);
}

.ws-s__log-desc {
  margin: 0;
  max-width: 42ch;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #64748b);
}

.ws-s__add-btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  min-height: 42px;
  padding: 0 18px;
  background: var(--ws-green);
  color: #fff;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.2);
  transition: background 0.15s ease, transform 0.15s ease;
}

.ws-s__add-btn:hover {
  background: var(--color-primary-hover, #0d655e);
}

.ws-s__add-btn:active {
  transform: translateY(1px);
}

.ws-s__table-wrap {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  border: 1px solid var(--color-border, rgba(15, 23, 42, 0.08));
  background: #fff;
}

.ws-s__table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.ws-s__table th,
.ws-s__table td {
  padding: 12px 10px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  text-align: center;
  vertical-align: middle;
}

.ws-s__table th {
  background: var(--ws-green-soft);
  color: var(--ws-green);
  font-weight: 700;
  white-space: nowrap;
  font-size: 0.8125rem;
}

.ws-s__table th:first-child,
.ws-s__table td:first-child {
  text-align: left;
  padding-left: 14px;
  white-space: nowrap;
}

.ws-s__table th:nth-child(7),
.ws-s__table td:nth-child(7) {
  text-align: left;
  min-width: 160px;
}

.ws-s__table tbody tr:last-child td {
  border-bottom: none;
}

.ws-s__empty-row td {
  padding: 28px 16px;
  color: var(--color-text-muted, #94a3b8);
  text-align: center !important;
}

.ws-s__date-input,
.ws-s__comment-input {
  width: 100%;
  box-sizing: border-box;
  min-height: 36px;
  padding: 6px 10px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--color-text-primary, #0f172a);
  background: #fff;
}

.ws-s__date-input:focus,
.ws-s__comment-input:focus {
  outline: none;
  border-color: var(--ws-green);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.ws-s__step-check {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.ws-s__delete-btn {
  appearance: none;
  border: 1px solid rgba(220, 38, 38, 0.2);
  background: #fff;
  color: #b91c1c;
  border-radius: 8px;
  min-height: 34px;
  padding: 0 10px;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.ws-s__delete-btn:hover {
  background: #fef2f2;
}

@media (max-width: 720px) {
  .ws-s__step summary {
    padding: 14px 14px;
  }

  .ws-s__step-body {
    padding: 0 14px 16px;
  }

  .ws-s__log {
    padding: 18px 14px;
  }

  .ws-s__add-btn {
    width: 100%;
  }
}