:root {
  color-scheme: dark;
}

.study-layout {
  padding: 16px;
}

.study-panel {
  background: var(--bg-card, rgba(0, 0, 0, 0.4));
  border-radius: var(--radius-lg, 16px);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  padding: 20px;
}

.study-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.study-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary, #fff);
}

.study-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary, #b6b9c5);
}

.study-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 16px;
}

.study-select {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary, #b6b9c5);
}

.study-search-wrap {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary, #b6b9c5);
  min-width: 220px;
  flex: 1;
}

.study-select select {
  min-width: 220px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text-primary, #fff);
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
}

.study-search {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text-primary, #fff);
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
}

.study-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary, #b6b9c5);
  align-self: flex-end;
  height: 38px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 193, 64, 0.55);
  background: rgba(255, 193, 64, 0.16);
  color: #f8e7b1;
}

.study-toggle input {
  width: 18px;
  height: 18px;
  accent-color: rgba(255, 193, 64, 0.95);
}

.study-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
  align-items: start;
}

.study-content.is-banquet {
  --banquet-max-answers: 5;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
}

.qa-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.3);
  border-radius: 12px;
  padding: 8px 10px;
  display: grid;
  gap: 8px;
  min-height: 230px;
  height: 100%;
  min-width: 0;
  grid-template-rows: auto 1fr auto;
}

.qa-card.banquet-card {
  min-height: auto;
  grid-template-rows: auto 1fr auto;
}

.qa-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.qa-id {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted, #8b8fa3);
}

.qa-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary, #fff);
  min-height: 64px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.qa-answer-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: auto;
}

.qa-answer-value {
  width: 100%;
  height: 72px;
  border-radius: 14px;
  border: 1px solid rgba(99, 201, 246, 0.35);
  background: rgba(99, 201, 246, 0.12);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #eaf7ff;
  display: grid;
  grid-template-rows: auto 1fr;
  align-items: center;
  text-align: center;
  cursor: pointer;
  user-select: none;
  padding: 8px;
  line-height: 1.25;
  transition: 0.2s ease;
}

.qa-answer-value .copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.35);
  color: rgba(255, 255, 255, 0.8);
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 0.85rem;
  transition: 0.2s ease;
  padding: 0 6px;
  position: absolute;
}

.qa-answer-value,
.qa-option,
.qa-card {
  overflow: visible;
}

.qa-answer-value,
.qa-option {
  z-index: 2;
}

.copy-toast {
  position: fixed;
  transform: translate(-50%, -100%);
  background: rgba(20, 26, 32, 0.95);
  border: 1px solid rgba(56, 211, 120, 0.6);
  color: #bff3d0;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.75rem;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  z-index: 99999;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.copy-toast.is-visible {
  opacity: 1;
}

.qa-answer-value .copy-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.qa-answer-value {
  position: relative;
}

.qa-option {
  position: relative;
}

.qa-option .copy-btn {
  position: absolute;
  top: 6px;
  right: 8px;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.35);
  color: rgba(255, 255, 255, 0.75);
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 0.7rem;
  transition: 0.2s ease;
}

.qa-option .copy-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
.qa-card.banquet-card .qa-answer-value {
  height: calc(var(--banquet-max-answers) * 32px + (var(--banquet-max-answers) - 1) * 6px);
}

.qa-card.banquet-card .qa-answer-text {
  white-space: pre-line;
  font-size: 0.95rem;
  line-height: 1.3;
}

.qa-card.is-hidden .qa-answer-value {
  color: rgba(255, 255, 255, 0.8);
}

.qa-answer-label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted, #8b8fa3);
  justify-self: start;
}

.qa-answer-value[data-type="multi"] .qa-answer-label {
  justify-self: center;
  text-align: center;
  width: 100%;
}

.qa-answer-text {
  font-size: 1.05rem;
  color: #eaf7ff;
  overflow-wrap: anywhere;
  word-break: break-word;
  user-select: text;
}

.banquet-toggle {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text-secondary, #b6b9c5);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: 0.2s ease;
}

.banquet-toggle:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.banquet-answers {
  display: grid;
  gap: 6px;
  margin-top: 6px;
  grid-auto-rows: 32px;
  min-height: calc(var(--banquet-max-answers) * 32px + (var(--banquet-max-answers) - 1) * 6px);
}

.banquet-single {
  border: 1px solid rgba(99, 201, 246, 0.45);
  background: rgba(99, 201, 246, 0.12);
  border-radius: 10px;
  padding: 8px 10px;
  font-weight: 700;
  color: #eaf7ff;
  text-align: center;
  min-height: calc(32px * 5 + 6px * 4);
  display: grid;
  place-items: center;
}
.qa-answer-options {
  display: grid;
  gap: 6px;
  margin-top: 6px;
  max-height: 100%;
  overflow-y: auto;
  padding-right: 6px;
}

.qa-option {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.25);
  font-size: 0.85rem;
  color: var(--text-secondary, #b6b9c5);
}

.qa-option.is-correct {
  border-color: rgba(99, 201, 246, 0.5);
  background: rgba(99, 201, 246, 0.12);
  color: #eaf7ff;
}

.qa-option-check {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(99, 201, 246, 0.5);
  color: #d6f4ff;
  font-size: 0.75rem;
}

.qa-option-text {
  text-align: left;
  overflow-wrap: anywhere;
  word-break: break-word;
  user-select: text;
}

.qa-answer-value:hover {
  border-color: rgba(99, 201, 246, 0.65);
  transform: translateY(-1px);
}

.study-empty {
  padding: 18px;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  color: var(--text-muted, #8b8fa3);
}

.element-table-host {
  display: grid;
  gap: 10px;
}

.element-table-section-title {
  text-align: center;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary, #fff);
}

.element-table-scroller {
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.22);
  width: min(100%, 980px);
  margin: 0 auto;
}

.element-table {
  width: 980px;
  min-width: 980px;
  border-collapse: separate;
  border-spacing: 0;
}

.element-table th,
.element-table td {
  padding: 9px 10px;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  white-space: nowrap;
}

.element-table tr:last-child td,
.element-table tr:last-child th {
  border-bottom: 0;
}

.element-table tr th:last-child,
.element-table tr td:last-child {
  border-right: 0;
}

.element-corner {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 4;
  background: rgba(16, 21, 28, 0.95);
  color: #e8eefb;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.element-header {
  font-size: 0.82rem;
  font-weight: 700;
  position: sticky;
  z-index: 2;
}

.element-table thead .element-header {
  top: 0;
  z-index: 3;
}

.element-table tbody .element-header {
  left: 0;
  z-index: 2;
}

.element-cell {
  color: #dce6f5;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.02);
}

.element-cell.is-strong {
  color: #b9f7d4;
  background: rgba(69, 198, 126, 0.2);
}

.element-cell.is-weak {
  color: #ffc7c7;
  background: rgba(216, 84, 84, 0.2);
}

.element-cell.is-even {
  color: #e0e8f8;
}

.el-neutral {
  background: rgba(154, 166, 186, 0.24);
  color: #e8edf9;
}

.el-water {
  background: rgba(92, 162, 255, 0.24);
  color: #dfefff;
}

.el-earth {
  background: rgba(161, 128, 84, 0.3);
  color: #f1e5d3;
}

.el-fire {
  background: rgba(237, 99, 86, 0.28);
  color: #ffe5df;
}

.el-wind {
  background: rgba(96, 203, 176, 0.26);
  color: #dbfff4;
}

.el-poison {
  background: rgba(148, 109, 216, 0.28);
  color: #f0e6ff;
}

.el-holy {
  background: rgba(255, 203, 92, 0.3);
  color: #fff5dc;
}

.el-shadow {
  background: rgba(109, 93, 183, 0.3);
  color: #ece8ff;
}

.el-ghost {
  background: rgba(138, 134, 199, 0.28);
  color: #efeeff;
}

.el-undead {
  background: rgba(98, 149, 104, 0.3);
  color: #e7f8e8;
}

@media (max-width: 720px) {
  .study-panel {
    padding: 16px;
  }

  .qa-card {
    padding: 12px;
  }
}