@import url("https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&display=swap");

:root {
  --bg-color: #f0f2f5;
  --container-bg: #ffffff;
  --text-color: #333333;
  --heading-color-1: #d81b60;
  --heading-color-2: #004d40;
  --heading-color-3: #1a237e;
  --accent-color: #c2185b;
  --blockquote-bg: #e3f2fd;
  --blockquote-border: #2196f3;
  --table-header-bg: #004d40;
  --table-header-text: #ffffff;
  --nav-button-bg: #fff;
  --nav-button-text: #333;
  --nav-button-border: #ccc;
  --nav-active-bg: #d81b60;
  --box-shadow-color: rgba(0, 0, 0, 0.1);

  /* MCQ Card Variables */
  --card-border-color: #e0e0e0;
  --card-shadow-color: rgba(0, 0, 0, 0.08);
  --mcq-tag-bg: #007bff;
  --mcq-tag-text: #ffffff;
  --success-color: #28a745;
}

[data-theme="forest"] {
  --bg-color: #f0f4f0;
  --container-bg: #ffffff;
  --text-color: #2c3e50;
  --heading-color-1: #27ae60;
  --heading-color-2: #16a085;
  --heading-color-3: #2c3e50;
  --accent-color: #e67e22;
  --blockquote-bg: #e8f5e9;
  --blockquote-border: #27ae60;
  --table-header-bg: #27ae60;
  --mcq-tag-bg: #27ae60;
}

[data-theme="ocean"] {
  --bg-color: #eef5ff;
  --container-bg: #ffffff;
  --text-color: #34495e;
  --heading-color-1: #2980b9;
  --heading-color-2: #3498db;
  --heading-color-3: #1f618d;
  --accent-color: #e74c3c;
  --blockquote-bg: #e4f1fe;
  --blockquote-border: #3498db;
  --table-header-bg: #2980b9;
  --mcq-tag-bg: #2980b9;
}

[data-theme="sunset"] {
  --bg-color: #fff3e0;
  --container-bg: #ffffff;
  --text-color: #4e342e;
  --heading-color-1: #e65100;
  --heading-color-2: #f57c00;
  --heading-color-3: #d84315;
  --accent-color: #bf360c;
  --blockquote-bg: #fff8e1;
  --blockquote-border: #f57c00;
  --table-header-bg: #e65100;
  --mcq-tag-bg: #e65100;
}

[data-theme="book"] {
  --bg-color: #f8f8f8;
  --container-bg: #ffffff;
  --text-color: #000000;
  --heading-color-1: #000000;
  --heading-color-2: #000000;
  --heading-color-3: #000000;
  --accent-color: #000000;
  --blockquote-bg: #f5f5f5;
  --blockquote-border: #000000;
  --table-header-bg: #000000;
  --table-header-text: #ffffff;
  --nav-button-bg: #ffffff;
  --nav-button-text: #000000;
  --nav-button-border: #cccccc;
  --nav-active-bg: #000000;
  --box-shadow-color: rgba(0, 0, 0, 0.1);
  --card-border-color: #dddddd;
  --card-shadow-color: rgba(0, 0, 0, 0.05);
  --mcq-tag-bg: #000000;
  --mcq-tag-text: #ffffff;
  --success-color: #000000;
}

.dark-mode {
  --bg-color: #121212;
  --container-bg: #1e1e1e;
  --text-color: #e0e0e0;
  --heading-color-1: #bb86fc;
  --heading-color-2: #03dac6;
  --heading-color-3: #cf6679;
  --accent-color: #f48fb1;
  --blockquote-bg: #2a2a2a;
  --blockquote-border: #03dac6;
  --table-header-bg: #3700b3;
  --nav-button-bg: #2c2c2c;
  --nav-button-text: #e0e0e0;
  --nav-button-border: #555;
  --nav-active-bg: #bb86fc;
  --box-shadow-color: rgba(255, 255, 255, 0.05);

  /* MCQ Card Variables for Dark Mode */
  --card-border-color: #444;
  --card-shadow-color: rgba(0, 0, 0, 0.2);
  --mcq-tag-bg: var(--heading-color-1); /* #bb86fc */
  --success-color: #4caf50;
}

html {
  scroll-behavior: smooth;
}
body {
  font-family: "Hind Siliguri", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s, color 0.3s;
}

body[data-theme="book"] {
  background-image: 
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 31px,
      rgba(0, 0, 0, 0.05) 31px,
      rgba(0, 0, 0, 0.05) 32px
    );
  background-size: 100% 32px;
}

body[data-theme="book"] .container {
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  border: 1px solid #dddddd;
  border-radius: 0;
}
body.desktop-view .container,
body.desktop-view header,
body.desktop-view .controls-wrapper {
  max-width: 1200px;
}
header {
  max-width: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 10px;
  transition: max-width 0.4s ease-in-out;
}
.logo {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 8px;
  box-shadow: 0 4px 12px var(--box-shadow-color);
}
.container {
  max-width: 100%;
  margin: 0;
  background-color: var(--container-bg);
  padding: 10px;
  border-radius: 0;
  box-shadow: none;
  transition: background-color 0.3s, max-width 0.4s ease-in-out;
}
h1,
h2,
h3,
h4 {
  border-bottom: 2px solid var(--card-border-color);
  padding-bottom: 10px;
  margin-top: 30px;
}
h1 {
  text-align: center;
  font-size: 1.3em;
  color: var(--heading-color-1);
  border-bottom: none;
  margin: 0;
}
h2 {
  font-size: 1.4em;
  color: var(--heading-color-2);
}
h3,
h4 {
  font-size: 1.2em;
  color: var(--heading-color-3);
}
h4 {
  border-bottom: 1px dotted var(--card-border-color);
}
p {
  font-size: 1.1em;
}
strong {
  color: var(--accent-color);
  font-weight: 600;
}
blockquote {
  background-color: var(--blockquote-bg);
  border-left: 5px solid var(--blockquote-border);
  margin: 20px 0;
  padding: 15px 20px;
  font-style: italic;
  font-size: 1.1em;
  border-radius: 5px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 25px auto;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}
ol,
ul {
  padding-left: 15px;
  margin: 10px 0;
}
li {
  margin-bottom: 6px;
  padding-left: 5px;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  font-size: 1em;
}
table th,
table td {
  border: 1px solid var(--nav-button-border);
  padding: 12px 15px;
  text-align: left;
}
table th {
  background-color: var(--table-header-bg);
  color: var(--table-header-text);
  font-weight: 600;
}
table tr:nth-of-type(even) {
  background-color: var(--blockquote-bg);
}
.controls-wrapper {
  max-width: 100%;
  margin: 0;
  padding: 8px;
  background-color: var(--container-bg);
  border-radius: 0;
  box-shadow: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  transition: max-width 0.4s ease-in-out;
}
.theme-buttons button,
#desktopModeToggle,
#rotateScreenToggle {
  padding: 6px 12px;
  border: 1px solid var(--nav-button-border);
  background-color: var(--nav-button-bg);
  color: var(--nav-button-text);
  border-radius: 5px;
  cursor: pointer;
  font-family: "Hind Siliguri", sans-serif;
  font-weight: 600;
  font-size: 0.9em;
  transition: all 0.2s;
}

.theme-buttons button[data-theme-name="book"] {
  background: #ffffff;
  border: 1px solid #000000;
  color: #000000;
}

body[data-theme="book"] p,
body[data-theme="book"] li {
  text-align: justify;
  line-height: 1.8;
  font-size: 1.05em;
}
.theme-buttons button:hover,
#desktopModeToggle:hover,
#rotateScreenToggle:hover {
  opacity: 0.8;
}
.dark-mode-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
}
.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: 0.4s;
  border-radius: 34px;
}
.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.4s;
  border-radius: 50%;
}
input:checked + .slider {
  background-color: var(--heading-color-1);
}
input:checked + .slider:before {
  transform: translateX(26px);
}
.digital-clock {
  font-family: "Courier New", Courier, monospace;
  font-size: 1.2em;
  font-weight: bold;
  padding: 8px 15px;
  background-color: var(--blockquote-bg);
  border: 1px solid var(--blockquote-border);
  border-radius: 5px;
  color: var(--heading-color-1);
}
.navigation {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 2px solid #eee;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.dark-mode .navigation {
  border-top-color: #333;
}
.nav-button {
  display: inline-block;
  padding: 10px 15px;
  border: 1px solid var(--nav-button-border);
  border-radius: 5px;
  text-decoration: none;
  color: var(--nav-button-text);
  background-color: var(--nav-button-bg);
  transition: background-color 0.3s, color 0.3s;
  font-weight: 500;
}
.nav-button:hover {
  background-color: #e0e0e0;
}
.dark-mode .nav-button:hover {
  background-color: #3a3a3a;
}
.nav-button.active {
  background-color: var(--nav-active-bg);
  color: white;
  border-color: var(--nav-active-bg);
}
.nav-button.disabled {
  pointer-events: none;
  opacity: 0.5;
}
.home-button {
  background-color: #1e88e5;
  color: white;
  border-color: #1e88e5;
}
.home-button:hover {
  background-color: #1565c0;
}
footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  font-size: 0.9em;
  color: var(--text-color);
  opacity: 0.8;
}
.scroll-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--heading-color-1);
  color: white;
  border: none;
  font-size: 24px;
  cursor: pointer;
  display: none;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  transition: opacity 0.3s, visibility 0.3s;
}
#scrollToBottomBtn {
  bottom: 80px;
  background-color: var(--heading-color-2);
}
.scroll-button:hover {
  opacity: 0.8;
}

/* =================================
   Modern MCQ Card Style (আধুনিক কার্ড ডিজাইন)
   ================================= */

.question-item {
  background-color: var(--container-bg);
  border: 1px solid var(--card-border-color);
  border-radius: 12px;
  padding: 50px 25px 25px 25px; /* উপরের দিকে ট্যাগের জন্য জায়গা */
  margin-bottom: 30px;
  box-shadow: 0 4px 12px var(--card-shadow-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative; /* h3 ট্যাগকে পজিশন করার জন্য */
  overflow: hidden; /* ট্যাগের বর্ডার-রেডিয়াস ঠিকভাবে দেখানোর জন্য */
}

.question-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px var(--card-shadow-color);
}

/* প্রশ্নের নম্বর ট্যাগ (e.g., প্রশ্ন ২৭) */
.question-item h3 {
  position: absolute;
  top: 0;
  left: 0;
  background-color: var(--mcq-tag-bg);
  color: var(--mcq-tag-text);
  padding: 8px 20px;
  border-radius: 12px 0 12px 0; /* স্টাইলিশ কর্নার */
  font-weight: bold;
  font-size: 1rem;

  /* বেস h3 স্টাইল ওভাররাইড */
  border-bottom: none;
  margin: 0;
}

/* প্রশ্নের মূল টেক্সট */
.question-item > p:first-of-type {
  font-size: 1.2em;
  font-weight: 500;
  margin-top: 0;
  margin-bottom: 20px;
}
.question-item > p:first-of-type strong {
  color: var(--text-color);
}

/* অপশনের তালিকা (ul এবং li) */
.question-item ul {
  list-style-type: none;
  padding: 0;
  margin: 0 0 20px 0;
}

.question-item ul li {
  font-size: 1.1em;
  padding: 12px 15px;
  border-bottom: 1px dashed var(--card-border-color);
  transition: background-color 0.2s;
  border-radius: 6px;
}

.question-item ul li:last-child {
  border-bottom: none;
}

.question-item ul li:hover {
  background-color: var(--blockquote-bg);
  cursor: pointer;
}

/* উত্তর এবং ব্যাখ্যা সেকশন */
.answer-section .answer-divider {
  border: 0;
  height: 1px;
  background-color: var(--card-border-color);
  margin: 15px 0;
}

.answer-section p {
  font-size: 1.1em;
}

.answer-section .answer-label {
  color: var(--accent-color);
}

.answer-section .correct-answer {
  color: var(--success-color);
  font-weight: bold;
  background-color: var(--blockquote-bg);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ব্যাখ্যা বক্স */
.explanation {
  margin-top: 15px;
  padding: 15px;
  background-color: var(--blockquote-bg);
  border-left: 4px solid var(--blockquote-border);
  border-radius: 4px;
}
.explanation p {
  margin: 0;
  font-size: 1em;
}

/* ================================================================
   Responsive Design for Mobile (মোবাইলের জন্য নতুন যোগ করা কোড)
   ================================================================ */
@media (max-width: 768px) {
  /* Body-র padding কমানো হয়েছে যাতে কন্টেন্ট স্ক্রিনের বেশি জায়গা পায় */
  body {
    padding: 10px;
  }

  /* মূল কন্টেইনার এবং হেডারকে পুরো স্ক্রিন জুড়ে দেওয়া হয়েছে */
  .container,
  header,
  .controls-wrapper {
    width: 100%;
    max-width: 100%;
    padding-left: 15px;
    padding-right: 15px;
    box-sizing: border-box; /* এটি নিশ্চিত করে যে padding মূল width এর বাইরে যাবে না */
  }

  .container {
    padding-top: 20px;
    padding-bottom: 20px;
  }

  /* মোবাইল ডিভাইসের জন্য হেডিং-এর সাইজ ঠিক করা হয়েছে */
  h1 {
    font-size: 1.8em;
  }
  h2 {
    font-size: 1.6em;
  }
  h3,
  h4 {
    font-size: 1.4em;
  }
  p {
    font-size: 1em;
  }

  .controls-wrapper {
    flex-direction: column;
    gap: 10px;
  }

  /* MCQ কার্ডের padding কমানো হয়েছে */
  .question-item {
    padding: 45px 15px 15px 15px;
  }
}
/* ভগ্নাংশের স্টাইল (Fraction Style) */
.fraction {
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    margin: 0 2px;
    font-size: 0.9em; /* ফন্ট সাইজ একটু ছোট যাতে লাইনের সাথে মানানসই হয় */
}

.fraction .top {
    display: block;
    border-bottom: 1px solid currentColor; /* টেক্সটের রঙের সাথে মিল রেখে দাগ হবে */
    padding: 0 2px;
    line-height: 1.2;
}

.fraction .bottom {
    display: block;
    padding: 0 2px;
    line-height: 1.2;
}


/* Content Box Styling */
.content-box {
  background: var(--blockquote-bg);
  border-left: 3px solid var(--blockquote-border);
  padding: 10px 12px;
  margin: 10px 0;
  border-radius: 4px;
  font-size: 0.95em;
}

/* Math Equation Compact */
.math-eq {
  font-size: 1em !important;
  padding: 6px 8px !important;
  margin: 5px 0 !important;
}

/* Blockquote Compact */
blockquote {
  padding: 10px 15px !important;
  margin: 15px 0 !important;
  font-size: 0.95em !important;
}

/* Table Compact */
table th,
table td {
  padding: 8px 10px !important;
  font-size: 0.9em !important;
}


/* Native App Mobile Override */
@media (max-width: 768px) {
  html {
    position: fixed;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }
  
  body {
    padding: 0 !important;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: none;
  }

  .container,
  header,
  .controls-wrapper {
    padding-left: 8px !important;
    padding-right: 8px !important;
  }

  .container {
    padding-top: 8px !important;
    padding-bottom: 8px !important;
  }

  h1 {
    font-size: 1.2em !important;
  }
  h2 {
    font-size: 1.3em !important;
  }
  h3,
  h4 {
    font-size: 1.1em !important;
  }
  p {
    font-size: 0.95em !important;
  }

  .controls-wrapper {
    flex-direction: row !important;
    gap: 4px !important;
    padding: 5px !important;
  }

  .question-item {
    padding: 40px 8px 8px 8px !important;
  }
}


/* Dashboard Grid Fix */
.quick-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background: #f8fafc;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #e2e8f0;
}

.stat-label { font-size: 0.9rem; color: #64748b; }
.stat-number { font-size: 1.5rem; font-weight: bold; color: #d81b60; }

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.streak-container {
    display: flex;
    align-items: center;
    background: #fff5f5;
    padding: 15px;
    border-radius: 12px;
    border-left: 5px solid #ff4d4d;
}

.streak-icon { font-size: 2rem; margin-right: 15px; }

.motivational-quote-box {
    background: #f0f9ff;
    padding: 15px;
    border-radius: 12px;
    border-left: 5px solid #3b82f6;
    font-style: italic;
}

/* Chapter Banner Fix */
.chapter-banner {
    background: linear-gradient(135deg, #d81b60 0%, #ad1457 100%);
    color: white;
    padding: 30px 20px;
    text-align: center;
    border-radius: 0 0 20px 20px;
    margin-bottom: 30px;
}

@media (max-width: 600px) {
    .quick-stats-grid { grid-template-columns: 1fr; }
    .dashboard-grid { grid-template-columns: 1fr; }
}


/* --- Premium Dashboard Design --- */
:root {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --accent-gradient: linear-gradient(135deg, #f43f5e 0%, #fb923c 100%);
    --glass-bg: rgba(255, 255, 255, 0.9);
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.chapter-banner {
    background: var(--primary-gradient) !important;
    color: white;
    padding: 40px 20px !important;
    text-align: center;
    border-radius: 0 0 30px 30px !important;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3) !important;
    margin-bottom: 40px !important;
    position: relative;
    overflow: hidden;
}

.chapter-banner::after {
    content: '';
    position: absolute;
    top: -50%; left: -10%;
    width: 200px; height: 200px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.quick-stats-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 20px !important;
    margin-bottom: 30px !important;
}

.stat-card {
    background: var(--glass-bg) !important;
    padding: 25px 15px !important;
    border-radius: 20px !important;
    text-align: center !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    box-shadow: var(--card-shadow) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.stat-card:hover {
    transform: translateY(-5px) !important;
    box-shadow: var(--hover-shadow) !important;
}

.stat-label {
    font-size: 0.85rem !important;
    color: #64748b !important;
    text-transform: uppercase !important;
    letter-spacing: 1px !important;
    font-weight: 600 !important;
    margin-bottom: 8px !important;
}

.stat-number {
    font-size: 1.8rem !important;
    font-weight: 800 !important;
    background: var(--primary-gradient) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}

.dashboard-grid {
    display: grid !important;
    grid-template-columns: 1fr 1.5fr !important;
    gap: 25px !important;
    margin-bottom: 30px !important;
}

.streak-container {
    background: var(--accent-gradient) !important;
    color: white !important;
    padding: 25px !important;
    border-radius: 24px !important;
    display: flex !important;
    align-items: center !important;
    box-shadow: 0 10px 20px rgba(244, 63, 94, 0.2) !important;
}

.streak-icon {
    font-size: 3rem !important;
    margin-right: 20px !important;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1)) !important;
}

.motivational-quote-box {
    background: #f8fafc !important;
    padding: 25px !important;
    border-radius: 24px !important;
    border-left: 6px solid #6366f1 !important;
    display: flex !important;
    align-items: center !important;
    font-style: italic !important;
    color: #475569 !important;
    box-shadow: var(--card-shadow) !important;
}

.styled-list a {
    display: flex !important;
    align-items: center !important;
    padding: 18px 25px !important;
    background: white !important;
    margin-bottom: 12px !important;
    border-radius: 16px !important;
    text-decoration: none !important;
    color: #1e293b !important;
    font-weight: 600 !important;
    border: 1px solid #f1f5f9 !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02) !important;
}

.styled-list a:hover {
    background: #f8fafc !important;
    border-color: #6366f1 !important;
    transform: translateX(8px) !important;
    color: #6366f1 !important;
}

.styled-list a i {
    margin-right: 15px !important;
    font-size: 1.2rem !important;
    color: #6366f1 !important;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .quick-stats-grid { grid-template-columns: 1fr !important; }
    .dashboard-grid { grid-template-columns: 1fr !important; }
    .chapter-banner h1 { font-size: 1.5rem !important; }
}


/* ============================================
   PREMIUM DASHBOARD DESIGN - DESKTOP & MOBILE
   ============================================ */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --glass-bg: rgba(255, 255, 255, 0.95);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --hover-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
}

/* Chapter Banner - Ultra Modern */
.chapter-banner {
    background: var(--primary-gradient) !important;
    color: white !important;
    padding: 50px 30px !important;
    text-align: center !important;
    border-radius: 0 0 40px 40px !important;
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.4) !important;
    margin-bottom: 40px !important;
    position: relative !important;
    overflow: hidden !important;
}

.chapter-banner::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 300px; height: 300px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.chapter-banner h1 {
    font-size: 2rem !important;
    font-weight: 800 !important;
    margin: 0 !important;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1) !important;
}

.chapter-banner p {
    font-size: 1rem !important;
    margin-top: 10px !important;
    opacity: 0.95 !important;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Stats Grid - Premium Cards */
.quick-stats-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)) !important;
    gap: 20px !important;
    margin: 30px 0 !important;
}

.stat-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
    padding: 30px 20px !important;
    border-radius: 24px !important;
    text-align: center !important;
    border: 2px solid transparent !important;
    box-shadow: var(--card-shadow) !important;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
    position: relative !important;
    overflow: hidden !important;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.02) !important;
    box-shadow: var(--hover-shadow) !important;
    border-color: rgba(102, 126, 234, 0.3) !important;
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-label {
    font-size: 0.75rem !important;
    color: #6c757d !important;
    text-transform: uppercase !important;
    letter-spacing: 1.5px !important;
    font-weight: 700 !important;
    margin-bottom: 12px !important;
}

.stat-number {
    font-size: 2.5rem !important;
    font-weight: 900 !important;
    background: var(--primary-gradient) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    line-height: 1 !important;
}

/* Dashboard Grid - Streak & Quote */
.dashboard-grid {
    display: grid !important;
    grid-template-columns: 1fr 2fr !important;
    gap: 20px !important;
    margin: 30px 0 !important;
}

.streak-container {
    background: var(--accent-gradient) !important;
    color: white !important;
    padding: 30px !important;
    border-radius: 28px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: 0 12px 40px rgba(245, 87, 108, 0.3) !important;
    transition: transform 0.3s ease !important;
}

.streak-container:hover {
    transform: scale(1.05) !important;
}

.streak-icon {
    font-size: 4rem !important;
    margin-right: 20px !important;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2)) !important;
    animation: pulse 2s ease-in-out infinite !important;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.streak-info h3 {
    font-size: 2rem !important;
    font-weight: 900 !important;
    margin: 0 !important;
    border: none !important;
}

.streak-info p {
    font-size: 0.9rem !important;
    margin: 5px 0 0 0 !important;
    opacity: 0.9 !important;
}

.motivational-quote-box {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%) !important;
    padding: 30px !important;
    border-radius: 28px !important;
    border-left: 6px solid #ff6b6b !important;
    display: flex !important;
    align-items: center !important;
    font-style: italic !important;
    color: #2d3436 !important;
    box-shadow: var(--card-shadow) !important;
    font-size: 1.1rem !important;
    line-height: 1.6 !important;
}

.motivational-quote-box i {
    font-size: 2rem !important;
    margin-right: 20px !important;
    opacity: 0.3 !important;
}

/* Class & Quiz Lists - Modern Buttons */
.styled-list a {
    display: flex !important;
    align-items: center !important;
    padding: 20px 25px !important;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
    margin-bottom: 15px !important;
    border-radius: 20px !important;
    text-decoration: none !important;
    color: #2d3436 !important;
    font-weight: 600 !important;
    font-size: 1rem !important;
    border: 2px solid #e9ecef !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05) !important;
    position: relative !important;
    overflow: hidden !important;
}

.styled-list a::before {
    content: '';
    position: absolute;
    left: 0; top: 0;
    width: 4px; height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.styled-list a:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: white !important;
    border-color: transparent !important;
    transform: translateX(10px) scale(1.02) !important;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3) !important;
}

.styled-list a:hover::before {
    transform: scaleY(1);
}

.styled-list a:hover i {
    color: white !important;
    transform: scale(1.2) !important;
}

.styled-list a i:first-child {
    margin-right: 15px !important;
    font-size: 1.4rem !important;
    color: #667eea !important;
    transition: all 0.3s ease !important;
}

.styled-list a i:last-child {
    margin-left: auto !important;
    font-size: 1rem !important;
    opacity: 0.5 !important;
    transition: all 0.3s ease !important;
}

/* Card Section Headers */
.card h2 {
    display: flex !important;
    align-items: center !important;
    font-size: 1.5rem !important;
    font-weight: 700 !important;
    color: #2d3436 !important;
    margin-bottom: 25px !important;
    padding-bottom: 15px !important;
    border-bottom: 3px solid #e9ecef !important;
}

.card h2 i {
    margin-right: 12px !important;
    color: #667eea !important;
    font-size: 1.3rem !important;
}

/* Progress Bar */
.progress-bar-container {
    width: 100%;
    height: 12px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    margin: 15px 0;
}

.progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 10px;
    transition: width 0.5s ease;
}

/* Dashboard Items */
.dashboard-item {
    background: white;
    padding: 25px;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
}

.dashboard-item h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #2d3436;
    margin: 0 0 15px 0;
    border: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .chapter-banner {
        padding: 35px 20px !important;
        border-radius: 0 0 30px 30px !important;
    }
    
    .chapter-banner h1 {
        font-size: 1.5rem !important;
    }
    
    .quick-stats-grid {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }
    
    .stat-card {
        padding: 25px 15px !important;
    }
    
    .stat-number {
        font-size: 2rem !important;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }
    
    .streak-container {
        padding: 25px !important;
    }
    
    .streak-icon {
        font-size: 3rem !important;
        margin-right: 15px !important;
    }
    
    .motivational-quote-box {
        padding: 20px !important;
        font-size: 0.95rem !important;
    }
    
    .styled-list a {
        padding: 18px 20px !important;
        font-size: 0.95rem !important;
    }
    
    .styled-list a:hover {
        transform: translateX(5px) !important;
    }
}

@media (max-width: 480px) {
    .chapter-banner h1 {
        font-size: 1.3rem !important;
    }
    
    .stat-number {
        font-size: 1.8rem !important;
    }
    
    .streak-info h3 {
        font-size: 1.5rem !important;
    }
}