/*-----------------------------------------------
  PREMIUM QUESTION BANK STYLESHEET
-----------------------------------------------*/
:root {
  --primary: var(--accent-color);
  --primary-hover: var(--accent-hover);
  --light-bg: var(--bg-color);
  --card-bg: var(--info-bg);
  --danger: rgba(255, 59, 48, 0.1);
  --success: rgba(52, 199, 89, 0.1);
  --text-danger: #ff3b30;
  --text-success: #34c759;
  --flag-bg: #ffe082;
  --flag-active-bg: #ffca28;
  --highlight-bg: rgba(255, 204, 0, 0.2);
  --min-answer-height: 3.5rem;
  --option-bg: #ffffff;
  --explanation-bg: #ffffff;
  --acknowledgment-bg: #fff3cd;
  --acknowledgment-color: #856404;
  --acknowledgment-border: #ffeeba;
}

/* Dark mode overrides */
body.dark {
  --danger: rgba(255, 69, 58, 0.15);
  --success: rgba(48, 209, 88, 0.15);
  --text-danger: #ff453a;
  --text-success: #30d158;
  --flag-bg: #5e4200;
  --flag-active-bg: #815600;
  --highlight-bg: rgba(255, 214, 10, 0.15);
  --option-bg: #2c2c2e;
  --explanation-bg: #2c2c2e;
  --acknowledgment-bg: #2c2500;
  --acknowledgment-color: #ffd60a;
  --acknowledgment-border: #443c00;
}

/* Base structural overrides for the page */
body.page-question_bank {
  background: linear-gradient(135deg, 
    #f8f9fa 0%, 
    #eef5f8 30%, 
    #f3eef8 60%, 
    #f8f9fa 100%);
  background-attachment: fixed;
  padding-top: 50px;
}

body.dark.page-question_bank {
  background: linear-gradient(135deg, 
    #1d1d1f 0%, 
    #151b24 30%, 
    #181524 60%, 
    #1d1d1f 100%);
}

.page-container {
  max-width: 1400px;
  margin: 0 auto 4rem;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

.page-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 1.5rem 0;
  color: var(--primary-color);
  transition: color 0.3s ease;
}

body.dark .page-title {
  color: var(--header-text);
}

/* Premium Filter Container with Glassmorphism */
.filter-container {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 24px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
  padding: 1.5rem;
  margin: 2rem auto;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: all 0.3s ease;
}

body.dark .filter-container {
  background: rgba(44, 44, 46, 0.65);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.filter-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.filter-section label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

#chapterFilter {
  width: 100%;
  padding: 12px 20px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 500;
  background-color: var(--option-bg);
  color: var(--text-color);
  transition: all 0.3s ease;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236e6e73' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1.2rem center;
  background-size: 1rem;
  padding-right: 3rem;
}

body.dark #chapterFilter {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a1a1a6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
}

#chapterFilter:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
  outline: none;
}

.controls-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  flex-wrap: wrap;
}

/* Pill buttons matching modern aesthetics */
.controls-section button,
.controls-section span {
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  flex: 1;
  min-width: 130px;
  border: none;
  white-space: nowrap;
}

.controls-section button {
  background-color: rgba(0, 102, 204, 0.08);
  color: var(--accent-color);
  cursor: pointer;
}

body.dark .controls-section button {
  background-color: rgba(41, 151, 255, 0.12);
  color: var(--accent-color);
}

.controls-section button:hover {
  background-color: var(--accent-color);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.25);
}

body.dark .controls-section button:hover {
  box-shadow: 0 4px 12px rgba(41, 151, 255, 0.35);
}

.controls-section #resetBtn {
  background-color: var(--accent-color);
  color: white;
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.15);
}

.controls-section #resetBtn:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 6px 16px rgba(0, 102, 204, 0.3);
}

.controls-section span {
  background: var(--option-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

/* Floating Progress Card */
#progressWrapper {
  position: fixed;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  width: 50px;
  text-align: center;
  z-index: 1000;
  transition: opacity 0.3s, transform 0.3s;
}

#progressWrapper.hidden {
  display: none !important;
}

#progressBar {
  width: 100%;
  height: 220px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column-reverse;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

body.dark #progressBar {
  background: rgba(44, 44, 46, 0.7);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

#correctBar {
  background: linear-gradient(360deg, #2e7559 0%, #34c759 100%);
  height: 0;
  transition: height 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

#incorrectBar {
  background: linear-gradient(360deg, #a94442 0%, #ff3b30 100%);
  height: 0;
  transition: height 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

#barLabel {
  margin-top: 10px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-color);
  background: var(--card-bg);
  padding: 4px 8px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  display: inline-block;
}

/* Premium Acknowledgment Alert */
.acknowledgment {
  background-color: var(--acknowledgment-bg);
  color: var(--acknowledgment-color);
  padding: 14px 20px;
  border-left: 4px solid var(--acknowledgment-border);
  text-align: center;
  margin: 1.5rem auto 2.5rem;
  max-width: 900px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.acknowledgment i {
  font-size: 1.1rem;
}

.acknowledgment a {
  color: var(--acknowledgment-color);
  text-decoration: underline;
  font-weight: 700;
}

/* Chapter Title Section Header */
.chapter-container {
  background: transparent;
  margin-bottom: 3.5rem;
}

.chapter-container h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--primary-color);
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

body.dark .chapter-container h2 {
  color: var(--header-text);
}

/* Question Cards Redesign - Side-by-Side Dashboard Layout */
.question-card {
  position: relative;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 24px;
  padding: 2.25rem 2rem 2rem;
  margin-bottom: 2.5rem;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  display: grid !important;
  grid-template-columns: 1.1fr 0.9fr !important;
  gap: 2.5rem;
  align-items: start;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

body.dark .question-card {
  background: rgba(44, 44, 46, 0.6);
  border-color: rgba(255, 255, 255, 0.07);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.question-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

body.dark .question-card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.question-content {
  min-width: 0;
  grid-column: 1;
}

.question-card p {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-color);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

/* Image Container */
.question-image-container {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
  grid-column: 2;
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border-color);
}

.question-img {
  width: 100%;
  height: auto;
  max-height: 55vh;
  object-fit: contain;
  transition: transform 0.3s ease;
  cursor: zoom-in;
}

.question-img:hover {
  transform: scale(1.01);
}

/* Answer Option Buttons */
.options {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.options button {
  width: 100%;
  min-height: var(--min-answer-height);
  padding: 14px 20px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  background: var(--option-bg);
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  text-align: left;
  white-space: normal;
  word-wrap: break-word;
  word-break: break-word;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-color);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}

body.dark .options button {
  border-color: rgba(255, 255, 255, 0.05);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.options button:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--accent-color);
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.08);
}

body.dark .options button:hover:not(:disabled) {
  box-shadow: 0 6px 20px rgba(41, 151, 255, 0.15);
}

.options button:disabled {
  opacity: 0.55;
  cursor: default;
}

/* Beautiful Answer feedback gradients */
.options button.selected.correct {
  background: linear-gradient(135deg, #34c759 0%, #2e7559 100%) !important;
  color: white !important;
  border-color: transparent !important;
  box-shadow: 0 8px 25px rgba(52, 199, 89, 0.25) !important;
}

.options button.selected.incorrect {
  background: linear-gradient(135deg, #ff3b30 0%, #c62828 100%) !important;
  color: white !important;
  border-color: transparent !important;
  box-shadow: 0 8px 25px rgba(255, 59, 48, 0.25) !important;
}

.options button.highlight {
  background-color: var(--highlight-bg) !important;
  border-color: #ffcc00 !important;
}

.options button.crossed {
  text-decoration: line-through;
  opacity: 0.45;
  transform: none !important;
  box-shadow: none !important;
}

/* Feedback message */
.feedback-message {
  opacity: 0;
  margin-top: 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  transition: opacity 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.feedback-message.correct,
.feedback-message.incorrect {
  opacity: 1;
  padding: 10px 18px;
  border-radius: 12px;
}

.feedback-message.correct {
  background: rgba(52, 199, 89, 0.1);
  color: #34c759;
  border: 1px solid rgba(52, 199, 89, 0.2);
}

.feedback-message.incorrect {
  background: rgba(255, 59, 48, 0.1);
  color: #ff3b30;
  border: 1px solid rgba(255, 59, 48, 0.2);
}

/* Premium Explanation Panel */
.explanation {
  display: none;
  background: var(--explanation-bg);
  padding: 18px 24px;
  border-left: 4px solid var(--accent-color);
  margin-top: 1.25rem;
  font-size: 1rem;
  line-height: 1.6;
  border-radius: 0 16px 16px 0;
  color: var(--text-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
  transition: all 0.3s ease;
}

body.dark .explanation {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.explanation:not(.hidden) {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

/* Flag Indicator Badge */
.flag-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: linear-gradient(135deg, #ffa726 0%, #ff9800 50%, #f57c00 100%);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  box-shadow: 0 4px 10px rgba(255, 152, 0, 0.2), 0 2px 4px rgba(0, 0, 0, 0.05);
  font-size: 13px;
  color: #fff;
  z-index: 10;
}

.flag-btn:hover {
  transform: scale(1.1) translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 152, 0, 0.35);
  background: linear-gradient(135deg, #ffb74d 0%, #ffa726 50%, #ff9800 100%);
}

.flag-btn:active {
  transform: scale(0.95);
}

.question-card.flagged .flag-btn {
  background: linear-gradient(135deg, #e53935 0%, #d32f2f 50%, #c62828 100%);
  box-shadow: 0 6px 16px rgba(229, 57, 53, 0.35);
  border-color: rgba(255, 255, 255, 0.9);
  animation: flagPulse 2s ease-in-out infinite;
}

@keyframes flagPulse {
  0%, 100% {
    box-shadow: 0 6px 16px rgba(229, 57, 53, 0.35);
  }
  50% {
    box-shadow: 0 8px 22px rgba(229, 57, 53, 0.55);
  }
}

/* Handle Questions Without Images */
.question-card.no-image {
  display: block !important;
}

.question-card.no-image .question-content {
  width: 100%;
}

.question-card.no-image .question-image-container {
  display: none;
}

/* Fullscreen / Presentation Mode Styles */
.fullscreen-container {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  z-index: 10000;
  overflow-y: auto;
  padding: 3rem 2rem 120px;
  box-sizing: border-box;
}

.fullscreen-container.active {
  display: flex !important;
  flex-direction: column;
  animation: fadeIn 0.35s ease-in-out;
}

#fullscreenControls {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  box-shadow: 0 -10px 35px rgba(0, 0, 0, 0.03);
  z-index: 10001;
  box-sizing: border-box;
}

body.dark #fullscreenControls {
  background: rgba(44, 44, 46, 0.85);
  border-color: rgba(255, 255, 255, 0.08);
}

#fullscreenControls button {
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  background-color: rgba(0, 102, 204, 0.08);
  color: var(--accent-color);
  flex: 1;
  min-width: 130px;
  border: none;
}

body.dark #fullscreenControls button {
  background-color: rgba(41, 151, 255, 0.12);
}

#fullscreenControls button:hover:not(:disabled) {
  background-color: var(--accent-color);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.2);
}

#fullscreenControls button:disabled {
  opacity: 0.4;
  cursor: default;
}

#fullscreenControls #exitFullscreenBtn {
  background-color: var(--accent-color);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
}

#fullscreenControls #exitFullscreenBtn:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 6px 16px rgba(0, 102, 204, 0.25);
}

#fullscreenIndicator {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-color);
  background: var(--card-bg);
  padding: 10px 22px;
  border-radius: 980px;
  border: 1px solid var(--border-color);
  min-width: 90px;
  text-align: center;
}

#fullscreenContent {
  max-width: 1200px;
  width: 100%;
  margin: auto;
  background: transparent;
  padding: 0;
  box-sizing: border-box;
}

#fullscreenContent .question-card {
  box-shadow: none !important;
  border: none !important;
  padding: 0 !important;
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  transform: none !important;
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  gap: 3rem;
}

#fullscreenContent .question-card.no-image {
  display: block !important;
}

#fullscreenContent .question-card p {
  font-size: 1.35rem;
  margin-bottom: 2rem;
}

#fullscreenContent .options button {
  font-size: 1.15rem;
  padding: 16px 24px;
}

#fullscreenContent .question-img {
  max-height: 70vh;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border-radius: 12px;
}

/* Image Zoom Modal */
.image-modal {
  display: none;
  position: fixed;
  z-index: 11000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  align-items: center;
  justify-content: center;
}

.image-modal-content {
  margin: auto;
  display: block;
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  animation: zoomIn 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

@keyframes zoomIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.image-modal-close {
  position: absolute;
  top: 20px;
  right: 25px;
  color: #fff;
  font-size: 2.5rem;
  font-weight: 300;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.image-modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

/* Cat Celebration Memes Overlay */
.cat-meme {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 12000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.cat-meme.visible {
  opacity: 1;
  visibility: visible;
}

.cat-meme-inner {
  position: relative;
  max-width: 500px;
  width: 90%;
  background-color: var(--card-bg);
  border-radius: 24px;
  padding: 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.cat-meme.visible .cat-meme-inner {
  transform: scale(1);
}

.cat-meme img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  margin-top: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(0, 0, 0, 0.3);
  color: white;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.close-btn:hover {
  background: rgba(0, 0, 0, 0.5);
  transform: rotate(90deg);
}

.cat-meme-title {
  color: var(--text-color);
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
}

.double-cats {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 15px;
}

.double-cats img {
  max-width: 47%;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.extra-celebration {
  color: #ff3b30;
  font-size: 1.1rem;
  margin-top: 15px;
  font-weight: 700;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive Overrides */
@media (max-width: 1024px) {
  .question-card {
    display: flex !important;
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .question-card .question-image-container {
    order: -1;
    width: 100%;
  }

  .question-img {
    max-height: 40vh;
  }

  #fullscreenContent .question-card {
    display: flex !important;
    flex-direction: column;
    gap: 1.5rem;
  }

  #fullscreenContent .question-card .question-image-container {
    order: -1;
  }

  #fullscreenContent .question-img {
    max-height: 45vh;
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 1.8rem !important;
    margin: 1.5rem 0 1rem 0 !important;
  }

  .filter-container {
    margin: 1rem auto;
    padding: 1rem;
    border-radius: 16px;
    gap: 12px;
  }

  .controls-section {
    gap: 8px;
  }

  .controls-section button,
  .controls-section span {
    min-width: 0;
    flex: 1;
    font-size: 0.85rem;
    padding: 8px 16px;
  }

  .options button {
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  #progressWrapper {
    top: auto;
    bottom: 20px;
    right: 20px;
    transform: none;
    width: 40px;
  }

  #progressBar {
    height: 150px;
    border-radius: 12px;
  }

  #barLabel {
    display: none;
  }

  .fullscreen-container {
    padding: 1.5rem 1rem;
  }

  #fullscreenControls {
    padding: 10px 1rem;
    gap: 10px;
  }

  #fullscreenControls button {
    padding: 8px 16px;
    font-size: 0.85rem;
    min-width: 0;
  }

  #fullscreenIndicator {
    font-size: 0.85rem;
    padding: 8px 16px;
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .controls-section {
    flex-direction: column;
    align-items: stretch;
  }

  .controls-section button,
  .controls-section span {
    width: 100%;
    margin-bottom: 4px;
  }

  .question-card {
    padding: 1.25rem;
    border-radius: 16px;
  }

  .question-card p {
    font-size: 1.05rem;
  }

  .options button {
    font-size: 0.9rem;
    padding: 10px 14px;
  }

  .feedback-message.correct,
  .feedback-message.incorrect {
    font-size: 0.85rem;
    padding: 8px 14px;
    border-radius: 8px;
  }

  .explanation {
    font-size: 0.9rem;
    padding: 12px 18px;
    border-radius: 0 12px 12px 0;
  }
}