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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>Study Zone β€” Q-Simplified</title>
<link href="https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700;800&family=Work+Sans:wght@300;400;500;600&display=swap" rel="stylesheet"/>
<style>
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#003465;--primary-mid:#004b8d;--surface:#f8f9fa;
  --surface-low:#f3f4f5;--surface-card:#ffffff;
  --tertiary:#8d2400;--on-tertiary:#ffdbd1;
  --text-primary:#191c1d;--text-secondary:#4e5f7b;--text-muted:#7a8fa6;
  --positive:#1a7a4a;--negative:#c0392b;
  --radius-sm:0.5rem;--radius-md:1rem;--radius-lg:1.5rem;--radius-xl:3rem;--radius-full:9999px;
  --shadow:0 4px 40px rgba(0,52,101,0.06);
}
body{font-family:'Work Sans',sans-serif;background:var(--surface);color:var(--text-primary);min-height:100vh}

/* NAV */
.nav-wrapper{background:var(--primary);padding:0 2rem}
.nav{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:2rem;height:64px}
.logo{font-family:'Manrope',sans-serif;font-weight:800;font-size:1.25rem;color:#fff;text-decoration:none;letter-spacing:-0.02em}
.nav-links{display:flex;align-items:center;gap:0.25rem;flex:1;justify-content:center}
.nav-links a{font-size:0.875rem;color:rgba(255,255,255,0.7);text-decoration:none;padding:0.4rem 0.75rem;border-radius:var(--radius-full);transition:all 0.2s}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,0.1)}
.nav-links a.active{color:#fff;font-weight:600}
.btn-login{font-size:0.8125rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;color:#fff;background:transparent;border:1.5px solid rgba(255,255,255,0.6);border-radius:var(--radius-full);padding:0.5rem 1.25rem;cursor:pointer;transition:all 0.2s;text-decoration:none;white-space:nowrap}
.btn-login:hover{background:#fff;color:var(--primary)}

/* HERO */
.hero{background:var(--primary);padding:4rem 2rem 0;position:relative;overflow:hidden}
.hero::after{content:'LEARN';position:absolute;right:2rem;bottom:-1.5rem;font-family:'Manrope',sans-serif;font-size:8rem;font-weight:800;color:rgba(255,255,255,0.03);line-height:1;pointer-events:none}
.hero-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1fr auto;align-items:end;padding-bottom:0}
.hero-tag{font-size:0.6875rem;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--on-tertiary);opacity:0.8;margin-bottom:0.75rem}
.hero-title{font-family:'Manrope',sans-serif;font-weight:800;font-size:2.5rem;color:#fff;letter-spacing:-0.03em;line-height:1.15;margin-bottom:0.75rem}
.hero-title span{color:var(--on-tertiary)}
.hero-desc{font-size:0.9375rem;color:rgba(255,255,255,0.65);max-width:480px;line-height:1.6;margin-bottom:2rem}
.hero-stats{display:flex;gap:2rem}
.hs-num{font-family:'Manrope',sans-serif;font-weight:800;font-size:1.5rem;color:#fff}
.hs-label{font-size:0.75rem;color:rgba(255,255,255,0.5);margin-top:0.125rem}
.hero-cta{background:var(--surface-card);color:var(--primary);border:none;border-radius:var(--radius-full);padding:0.875rem 2rem;font-family:'Work Sans',sans-serif;font-size:0.9375rem;font-weight:600;cursor:pointer;transition:all 0.2s;text-decoration:none;display:inline-block}
.hero-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,0.2)}
.hero-right{padding-bottom:2rem;text-align:right}

/* CATEGORY TABS */
.category-bar{max-width:1100px;margin:2rem auto 0;padding:0 1.5rem}
.cat-tabs{display:flex;gap:0.5rem;background:var(--surface-card);border-radius:var(--radius-full);padding:4px;box-shadow:var(--shadow);width:fit-content}
.cat-tab{padding:0.5rem 1.25rem;border:none;border-radius:var(--radius-full);font-family:'Work Sans',sans-serif;font-size:0.8125rem;font-weight:500;color:var(--text-muted);background:transparent;cursor:pointer;transition:all 0.2s;white-space:nowrap}
.cat-tab.active{background:var(--primary);color:#fff;font-weight:600}

/* MAIN */
.main{max-width:1100px;margin:0 auto;padding:2rem 1.5rem}

/* SEARCH BAR */
.search-wrap{position:relative;margin-bottom:2rem}
.search-input{width:100%;padding:0.875rem 1rem 0.875rem 3rem;background:var(--surface-card);border:2px solid transparent;border-radius:var(--radius-full);font-family:'Work Sans',sans-serif;font-size:0.9375rem;color:var(--text-primary);outline:none;box-shadow:var(--shadow);transition:border 0.2s}
.search-input:focus{border-color:var(--primary)}
.search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-muted)}

/* FEATURED COURSE */
.featured-course{background:linear-gradient(135deg,var(--primary) 0%,#00214a 100%);border-radius:var(--radius-xl);padding:2.5rem;margin-bottom:2rem;display:grid;grid-template-columns:1fr auto;gap:2rem;align-items:center;box-shadow:var(--shadow);position:relative;overflow:hidden}
.featured-course::before{content:'';position:absolute;top:-60px;right:-60px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,0.04)}
.fc-tag{font-size:0.6875rem;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;background:var(--tertiary);color:var(--on-tertiary);padding:0.25rem 0.75rem;border-radius:var(--radius-full);width:fit-content;margin-bottom:0.875rem}
.fc-title{font-family:'Manrope',sans-serif;font-weight:800;font-size:1.625rem;color:#fff;letter-spacing:-0.02em;line-height:1.25;margin-bottom:0.75rem}
.fc-desc{font-size:0.875rem;color:rgba(255,255,255,0.7);line-height:1.6;margin-bottom:1.5rem}
.fc-meta{display:flex;gap:1.5rem}
.fc-meta-item{font-size:0.8125rem;color:rgba(255,255,255,0.6)}
.fc-meta-item strong{color:#fff}
.fc-right{text-align:center;flex-shrink:0}
.fc-price{font-family:'Manrope',sans-serif;font-weight:800;font-size:2rem;color:#fff;margin-bottom:0.25rem}
.fc-price-note{font-size:0.75rem;color:rgba(255,255,255,0.5);margin-bottom:1rem}
.btn-enroll-cta{background:var(--on-tertiary);color:var(--tertiary);border:none;border-radius:var(--radius-full);padding:0.875rem 2rem;font-family:'Work Sans',sans-serif;font-size:0.9375rem;font-weight:700;cursor:pointer;transition:all 0.2s;white-space:nowrap}
.btn-enroll-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,0.2)}

/* COURSE GRID */
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem}
.section-title{font-family:'Manrope',sans-serif;font-weight:700;font-size:1.125rem;color:var(--text-primary)}
.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.course-card{background:var(--surface-card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);cursor:pointer;transition:transform 0.2s}
.course-card:hover{transform:translateY(-3px)}
.cc-img{height:140px;position:relative;display:flex;align-items:flex-end;padding:1rem}
.cc-img-0{background:linear-gradient(135deg,#003465 0%,#004b8d 100%)}
.cc-img-1{background:linear-gradient(135deg,#651700 0%,#8d2400 100%)}
.cc-img-2{background:linear-gradient(135deg,#1a5c3a 0%,#1a7a4a 100%)}
.cc-img-3{background:linear-gradient(135deg,#4a1560 0%,#7b21a8 100%)}
.cc-img-4{background:linear-gradient(135deg,#5c3a00 0%,#8c5a00 100%)}
.cc-img-5{background:linear-gradient(135deg,#1a3a5c 0%,#2a5a8c 100%)}
.cc-level{font-size:0.625rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;background:rgba(255,255,255,0.2);color:#fff;padding:0.2rem 0.625rem;border-radius:var(--radius-full)}
.cc-body{padding:1.25rem}
.cc-category{font-size:0.625rem;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--tertiary);margin-bottom:0.375rem}
.cc-title{font-family:'Manrope',sans-serif;font-weight:700;font-size:0.9375rem;color:var(--text-primary);line-height:1.35;margin-bottom:0.5rem}
.cc-desc{font-size:0.8125rem;color:var(--text-muted);line-height:1.5;margin-bottom:0.875rem}
.cc-footer{display:flex;align-items:center;justify-content:space-between}
.cc-meta{font-size:0.75rem;color:var(--text-muted)}
.cc-price{font-family:'Manrope',sans-serif;font-weight:700;font-size:0.9375rem;color:var(--primary)}
.cc-price.free{color:var(--positive)}
.cc-rating{display:flex;align-items:center;gap:0.25rem;font-size:0.75rem;color:var(--text-muted)}
.stars{color:#f4c430;font-size:0.75rem}

/* FOOTER */
.footer{background:var(--primary);margin-top:3rem}
.footer-inner{max-width:1100px;margin:0 auto;padding:2rem 1.5rem;display:flex;flex-wrap:wrap;align-items:center;gap:1rem}
.footer-logo{font-family:'Manrope',sans-serif;font-weight:800;font-size:1.125rem;color:#fff;letter-spacing:-0.02em}
.footer-copy{font-size:0.6875rem;color:rgba(255,255,255,0.4);margin-top:0.125rem}
.footer-links{flex:1;display:flex;justify-content:center;gap:1.5rem;flex-wrap:wrap}
.footer-links a{font-size:0.75rem;font-weight:500;letter-spacing:0.04em;text-transform:uppercase;color:rgba(255,255,255,0.5);text-decoration:none;transition:color 0.2s}
.footer-links a:hover{color:#fff}
@media(max-width:900px){.hero-inner{grid-template-columns:1fr}.hero-right{display:none}.course-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.course-grid{grid-template-columns:1fr}.featured-course{grid-template-columns:1fr}}
</style>
</head>
<body>
<div class="nav-wrapper">
  <nav class="nav">
    <a href="/" class="logo">Q-Simplified</a>
    <div class="nav-links">
      <a href="/about.html">About</a>
      <a href="/trends.html">Trends</a>
      <a href="/study-zone.html" class="active">Study Zone</a>
      <a href="/test-series.html">Test Series</a>
      <a href="/simplified-zone.html">Simplified Zone</a>
      <a href="/book-class.html">Book Class</a>
    </div>
    <a href="/login.html" class="btn-login" id="nav-auth-btn">Login</a>
  </nav>
</div>

<!-- HERO -->
<div class="hero">
  <div class="hero-inner">
    <div>
      <div class="hero-tag">Study Zone</div>
      <h1 class="hero-title">Master your<br/><span>financial future.</span></h1>
      <p class="hero-desc">Expert-crafted courses on investing, macroeconomics, personal finance, and the Indian markets β€” simplified for every level.</p>
      <div class="hero-stats">
        <div><div class="hs-num">24+</div><div class="hs-label">Courses</div></div>
        <div><div class="hs-num">200+</div><div class="hs-label">Lessons</div></div>
        <div><div class="hs-num">12K+</div><div class="hs-label">Students</div></div>
      </div>
    </div>
    <div class="hero-right">
      <a href="/login.html" class="hero-cta">Start Learning Free β†’</a>
    </div>
  </div>
</div>

<!-- CATEGORY TABS -->
<div class="category-bar">
  <div class="cat-tabs">
    <button class="cat-tab active" onclick="filterCat('all',this)">All Courses</button>
    <button class="cat-tab" onclick="filterCat('investing',this)">Investing</button>
    <button class="cat-tab" onclick="filterCat('macro',this)">Macroeconomics</button>
    <button class="cat-tab" onclick="filterCat('personal',this)">Personal Finance</button>
    <button class="cat-tab" onclick="filterCat('markets',this)">Indian Markets</button>
    <button class="cat-tab" onclick="filterCat('advanced',this)">Advanced</button>
  </div>
</div>

<!-- MAIN -->
<main class="main">

  <!-- SEARCH -->
  <div class="search-wrap">
    <svg class="search-icon" width="18" height="18" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>
    <input class="search-input" id="search-input" type="text" placeholder="Search courses β€” e.g. mutual funds, bonds, GST..." oninput="handleSearch(this.value)"/>
  </div>

  <!-- FEATURED COURSE -->
  <div class="featured-course">
    <div>
      <div class="fc-tag">⭐ Featured</div>
      <h2 class="fc-title">The Complete Indian Stock Market Masterclass</h2>
      <p class="fc-desc">From understanding how the NSE and BSE work to building your first equity portfolio β€” a comprehensive course for the serious Indian investor.</p>
      <div class="fc-meta">
        <span class="fc-meta-item"><strong>18</strong> modules</span>
        <span class="fc-meta-item"><strong>6</strong> hours</span>
        <span class="fc-meta-item"><strong>Beginner</strong> β†’ Advanced</span>
        <span class="fc-meta-item">⭐ <strong>4.9</strong> (840 reviews)</span>
      </div>
    </div>
    <div class="fc-right">
      <div class="fc-price">β‚Ή999</div>
      <div class="fc-price-note">One-time Β· Lifetime access</div>
      <button class="btn-enroll-cta" onclick="handleEnroll('stock-market-masterclass')">Enroll Now</button>
    </div>
  </div>

  <!-- COURSES GRID -->
  <div class="section-header">
    <span class="section-title" id="courses-count">All Courses (6)</span>
    <div style="display:flex;align-items:center;gap:0.5rem;font-size:0.8125rem;color:var(--text-muted)">
      Sort by:
      <select onchange="sortCourses(this.value)" style="border:none;background:var(--surface-card);border-radius:var(--radius-sm);padding:0.25rem 0.5rem;font-family:'Work Sans',sans-serif;font-size:0.8125rem;color:var(--text-secondary);outline:none">
        <option>Most Popular</option>
        <option>Newest</option>
        <option>Price: Low to High</option>
        <option>Free First</option>
      </select>
    </div>
  </div>

  <div class="course-grid" id="course-grid">
    <!-- Populated by JS -->
  </div>

</main>

<!-- FOOTER -->
<footer class="footer">
  <div class="footer-inner">
    <div>
      <div class="footer-logo">Q-Simplified</div>
      <div class="footer-copy">Β© 2024 Q-SIMPLIFIED. THE FINANCIAL ARCHITECT.</div>
    </div>
    <nav class="footer-links">
      <a href="#">Privacy Policy</a><a href="#">Terms of Service</a>
      <a href="#">Contact Us</a><a href="#">Sitemap</a>
    </nav>
  </div>
</footer>

<script>
const API_BASE = '';  // Same origin β€” FastAPI serves both frontend and API

const COURSES = [
  {id:'mutual-funds-simplified',title:'Mutual Funds Simplified',desc:'Understand SIPs, NAV, expense ratios, and how to pick the right fund for your goals.',category:'investing',level:'beginner',modules:8,hours:3,price:0,rating:4.8,reviews:1240,color:0},
  {id:'rbi-monetary-policy',title:'RBI & Monetary Policy Decoded',desc:'How the central bank shapes interest rates, inflation, and the entire Indian economy.',category:'macro',level:'intermediate',modules:6,hours:2.5,price:499,rating:4.7,reviews:642,color:1},
  {id:'personal-finance-101',title:'Personal Finance 101',desc:'Budgeting, emergency funds, term insurance, and ELSS β€” your complete financial toolkit.',category:'personal',level:'beginner',modules:10,hours:4,price:0,rating:4.9,reviews:2150,color:2},
  {id:'options-futures',title:'Options & Futures: A Practical Guide',desc:'Master derivatives trading with real examples from the NSE F&O segment.',category:'advanced',level:'advanced',modules:14,hours:7,price:1499,rating:4.6,reviews:380,color:3},
  {id:'global-macro',title:'Global Macro for Indian Investors',desc:'How Fed rate decisions, China\'s economy, and oil prices affect your Nifty portfolio.',category:'macro',level:'intermediate',modules:9,hours:4,price:799,rating:4.7,reviews:512,color:4},
  {id:'sensex-nifty-explained',title:'Sensex & Nifty β€” Index Investing',desc:'Passive investing in India: index funds, ETFs, and long-term wealth creation.',category:'markets',level:'beginner',modules:7,hours:2.5,price:0,rating:4.8,reviews:1890,color:5},
];

let filteredCourses = [...COURSES];
let currentCategory = 'all';

function renderCourses(courses) {
  const grid = document.getElementById('course-grid');
  document.getElementById('courses-count').textContent = `${currentCategory==='all'?'All':'Filtered'} Courses (${courses.length})`;

  if (courses.length === 0) {
    grid.innerHTML = `<div style="grid-column:1/-1;text-align:center;padding:3rem;color:var(--text-muted)">
      <div style="font-size:2rem;margin-bottom:0.5rem">πŸ”</div>
      <div style="font-family:'Manrope',sans-serif;font-weight:700;font-size:1rem;margin-bottom:0.5rem">No courses found</div>
      <div style="font-size:0.875rem">Try a different search or category</div>
    </div>`;
    return;
  }

  grid.innerHTML = courses.map(c => `
    <div class="course-card" onclick="openCourse('${c.id}')">
      <div class="cc-img cc-img-${c.color}">
        <span class="cc-level">${c.level.charAt(0).toUpperCase()+c.level.slice(1)}</span>
      </div>
      <div class="cc-body">
        <div class="cc-category">${c.category}</div>
        <h3 class="cc-title">${c.title}</h3>
        <p class="cc-desc">${c.desc}</p>
        <div class="cc-footer">
          <div>
            <div class="cc-rating"><span class="stars">β˜…β˜…β˜…β˜…β˜…</span> ${c.rating} (${c.reviews.toLocaleString('en-IN')})</div>
            <div class="cc-meta">${c.modules} modules Β· ${c.hours}h</div>
          </div>
          <div class="cc-price ${c.price===0?'free':''}">${c.price===0?'Free':'β‚Ή'+c.price.toLocaleString('en-IN')}</div>
        </div>
      </div>
    </div>
  `).join('');
}

function filterCat(cat, btn) {
  currentCategory = cat;
  document.querySelectorAll('.cat-tab').forEach(t=>t.classList.remove('active'));
  btn.classList.add('active');
  filteredCourses = cat==='all' ? [...COURSES] : COURSES.filter(c=>c.category===cat||c.level===cat);
  renderCourses(filteredCourses);
}

function handleSearch(val) {
  const q = val.toLowerCase();
  filteredCourses = COURSES.filter(c=>
    c.title.toLowerCase().includes(q)||
    c.desc.toLowerCase().includes(q)||
    c.category.toLowerCase().includes(q)
  );
  renderCourses(filteredCourses);
}

function sortCourses(val) {
  const arr = [...filteredCourses];
  if (val==='Newest') arr.sort((a,b)=>b.id.localeCompare(a.id));
  if (val==='Price: Low to High') arr.sort((a,b)=>a.price-b.price);
  if (val==='Free First') arr.sort((a,b)=>a.price-b.price);
  if (val==='Most Popular') arr.sort((a,b)=>b.reviews-a.reviews);
  renderCourses(arr);
}

function openCourse(id) {
  const token = localStorage.getItem('qs_token');
  if (!token) {
    window.location.href = `/login.html?redirect=/course/${id}`;
    return;
  }
  window.location.href = `/course.html?id=${id}`;
}

function handleEnroll(id) {
  const token = localStorage.getItem('qs_token');
  if (!token) { window.location.href='/login.html'; return; }
  alert('Enrollment flow β€” integrate Razorpay here for paid courses');
}

// Auth nav state
function checkAuth() {
  const user = JSON.parse(localStorage.getItem('qs_user')||'null');
  if (user) {
    const btn=document.getElementById('nav-auth-btn');
    btn.textContent=user.full_name?.split(' ')[0]||'Account';
    btn.href='/profile.html';
  }
}

document.addEventListener('DOMContentLoaded', () => {
  renderCourses(COURSES);
  checkAuth();
});
</script>
</body>
</html>