.exam-app {
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 100vh;
  min-height: 100svh;
  box-sizing: border-box;
}

.exam-topbar {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(135deg, #fff6ec 0%, #ffeede 55%, #ffe7f0 100%);
  border-radius: 20px;
  padding: 16px 18px;
  box-shadow: 0 12px 24px rgba(60, 40, 20, 0.12);
  overflow: hidden;
}

.exam-deco {
  display: flex;
  gap: 14px;
  font-size: 20px;
  opacity: 0.85;
  filter: saturate(1.1);
}

.exam-deco span {
  animation: examBob 2.6s ease-in-out infinite;
}
.exam-deco span:nth-child(2n) {
  animation-duration: 3.2s;
}
.exam-deco span:nth-child(3n) {
  animation-delay: 0.4s;
}

@keyframes examBob {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-4px) rotate(-6deg);
  }
}

.exam-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.exam-name {
  font-size: 20px;
  font-weight: 800;
  color: #2f2417;
}

.exam-back {
  border: none;
  border-radius: 12px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  background: #f1e6d8;
  color: #5a4631;
  cursor: pointer;
}

.exam-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 14px;
  color: #7a6a55;
}

.exam-stats b {
  color: #e86f3a;
  font-size: 16px;
}

.exam-progress {
  height: 8px;
  border-radius: 999px;
  background: #efe2cf;
  overflow: hidden;
}

.exam-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #e86f3a, #f0a44b);
  transition: width 0.3s ease;
}

.exam-main {
  flex: 1;
  width: 100%;
  background: #fff;
  border-radius: 22px;
  padding: 28px;
  box-shadow: 0 12px 28px rgba(60, 40, 20, 0.1);
  overflow-y: auto;
  position: relative;
  box-sizing: border-box;
}

.exam-loading {
  text-align: center;
  color: #8a7a64;
  padding: 40px 0;
}

.exam-q {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  width: 100%;
}

.exam-q-tip {
  font-size: 14px;
  color: #9a8a72;
}

.exam-q-prompt {
  font-size: 24px;
  font-weight: 800;
  color: #2f2417;
  text-align: center;
}

.exam-audio-btn {
  border: none;
  border-radius: 16px;
  padding: 14px 26px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #e86f3a, #f0a44b);
  box-shadow: 0 10px 20px rgba(232, 111, 58, 0.25);
  cursor: pointer;
}

.exam-audio-btn.small {
  padding: 8px 18px;
  font-size: 15px;
}

.exam-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
}

.exam-option {
  border: 2px solid #efe2cf;
  border-radius: 16px;
  padding: 16px 12px;
  font-size: 17px;
  font-weight: 600;
  background: #fff;
  color: #3a2e1e;
  cursor: pointer;
  transition: transform 0.05s ease;
}

.exam-option:active {
  transform: scale(0.98);
}

.exam-option.right {
  background: #e6f7ec;
  border-color: #1f9d55;
  color: #15713c;
}

.exam-option.wrong {
  background: #fdeaea;
  border-color: #d9534f;
  color: #b02a26;
}

.exam-letters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.exam-letter-fixed,
.exam-letter-input,
.exam-letter-tile {
  width: 38px;
  height: 46px;
  border-radius: 10px;
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: lowercase;
}

.exam-letter-fixed {
  background: #f4ead9;
  color: #4a3a26;
}

.exam-letter-input {
  border: 2px solid #e8a45b;
  text-align: center;
  outline: none;
  color: #2f2417;
  background: #fff;
}

.exam-letter-input.right {
  border-color: #1f9d55;
  background: #e6f7ec;
}

.exam-letter-input.wrong {
  border-color: #d9534f;
  background: #fdeaea;
}

.exam-letter-tile {
  border: 2px solid #efe2cf;
  background: #fff;
  color: #3a2e1e;
  cursor: pointer;
}

.exam-letter-tile.right {
  border-color: #1f9d55;
  background: #e6f7ec;
  color: #15713c;
}

.exam-letter-tile.wrong {
  border-color: #d9534f;
  background: #fdeaea;
  color: #b02a26;
}

.exam-spell-input {
  width: 100%;
  max-width: 360px;
  border: 2px solid #e8a45b;
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 20px;
  text-align: center;
  outline: none;
  text-transform: lowercase;
}

.exam-spell-input.right {
  border-color: #1f9d55;
  background: #e6f7ec;
}

.exam-spell-input.wrong {
  border-color: #d9534f;
  background: #fdeaea;
}

.exam-submit,
.exam-next {
  border: none;
  border-radius: 16px;
  padding: 13px 30px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #e86f3a, #f0a44b);
  box-shadow: 0 10px 18px rgba(232, 111, 58, 0.22);
  cursor: pointer;
}

.exam-submit:disabled {
  opacity: 0.6;
  cursor: default;
}

.exam-answer {
  font-size: 16px;
  font-weight: 700;
  color: #b25a1f;
}

/* ---- tile fill (spell / complete) ---- */
.exam-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.exam-slot {
  min-width: 40px;
  height: 50px;
  padding: 0 6px;
  border-radius: 10px;
  font-size: 24px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: lowercase;
}

.exam-slot.fixed {
  background: #f4ead9;
  color: #4a3a26;
}

.exam-slot.empty {
  border: 2px dashed #e8a45b;
  background: #fff7ee;
  color: transparent;
}

.exam-slot.filled {
  border: 2px solid #e8a45b;
  background: #fff;
  color: #2f2417;
  cursor: pointer;
}

.exam-slot.right {
  border: 2px solid #1f9d55;
  background: #e6f7ec;
  color: #15713c;
}

.exam-slot.wrong {
  border: 2px solid #d9534f;
  background: #fdeaea;
  color: #b02a26;
}

.exam-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 6px;
}

.exam-tile {
  min-width: 44px;
  height: 50px;
  border-radius: 12px;
  border: 2px solid #efe2cf;
  background: #fff;
  font-size: 22px;
  font-weight: 800;
  color: #3a2e1e;
  cursor: pointer;
  text-transform: lowercase;
}

.exam-tile.used {
  opacity: 0.35;
}

.exam-tile.selected,
.exam-letter-tile.selected {
  border-color: #e86f3a;
  background: #fff1e3;
}

/* ---- hand-drawn red check (positioned/sized inline per answer) ---- */
.exam-check {
  position: absolute;
  pointer-events: none;
  z-index: 5;
  overflow: visible;
}

.exam-check-path {
  fill: none;
  stroke: #e23b3b;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: examCheckDraw 0.4s ease-out forwards;
}

@keyframes examCheckDraw {
  to {
    stroke-dashoffset: 0;
  }
}

/* ---- matching ---- */
.exam-match-board {
  position: relative;
  width: 100%;
  max-width: 720px;
  display: flex;
  justify-content: space-between;
  gap: 90px;
}

.exam-match-svg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.exam-match-svg line {
  stroke: #111;
  stroke-width: 3;
}

.exam-match-svg line.line-user {
  stroke: #111;
}

.exam-match-svg line.line-correct {
  stroke: #d9534f;
  stroke-width: 3;
  stroke-dasharray: 6 4;
}

.exam-match-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  position: relative;
  z-index: 2;
}

.exam-match-item {
  border: 2px solid #efe2cf;
  border-radius: 14px;
  padding: 12px 10px;
  font-size: 16px;
  font-weight: 600;
  background: #fff;
  color: #3a2e1e;
  cursor: pointer;
}

.exam-match-item.selected {
  border-color: #e86f3a;
  background: #fff1e3;
}

.exam-match-item.right {
  border-color: #1f9d55;
  background: #e6f7ec;
}

.exam-match-item.wrong {
  border-color: #d9534f;
  background: #fdeaea;
}

/* ---- result ---- */
.exam-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 16, 12, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 30;
}

.exam-overlay.hidden {
  display: none;
}

.exam-result-card {
  width: min(420px, 92vw);
  background: #fffaf3;
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: center;
}

.exam-result-title {
  font-size: 22px;
  font-weight: 800;
  color: #2f2417;
}

.exam-result-score {
  font-size: 18px;
  font-weight: 700;
  color: #3a2e1e;
}

.exam-result-reward {
  font-size: 16px;
  font-weight: 700;
  color: #e86f3a;
}

.exam-result-tip {
  font-size: 14px;
  color: #9a8a72;
}

.exam-result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
}

.exam-result-btn {
  border: none;
  border-radius: 14px;
  padding: 13px;
  font-size: 16px;
  font-weight: 700;
  background: #f1e6d8;
  color: #5a4631;
  cursor: pointer;
}

.exam-result-btn.primary {
  color: #fff;
  background: linear-gradient(135deg, #e86f3a, #f0a44b);
}

/* ---- coin rain ---- */
.coin-rain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 31;
}

.coin-rain.hidden {
  display: none;
}

.coin-drop {
  position: absolute;
  top: -40px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #ffe08a, #f3b938 60%, #c98a18);
  box-shadow: 0 0 6px rgba(243, 185, 56, 0.6);
  animation: coinFall linear forwards;
}

@keyframes coinFall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(110vh) rotate(540deg);
    opacity: 0.9;
  }
}

@media (max-width: 560px) {
  .exam-q-prompt {
    font-size: 20px;
  }
  .exam-options {
    grid-template-columns: 1fr;
  }
  .exam-match-board {
    gap: 36px;
  }
}