/*=========================
        HERO
=========================*/

.chapter-hero{

    padding:90px 8%;

    min-height:90vh;

    display:flex;

    flex-direction:column;

    justify-content:center;

    align-items:center;

    text-align:center;

    background:linear-gradient(135deg,#1C2526,#263238);

}

/*=========================
      BREADCRUMB
=========================*/

.breadcrumb{

    margin-bottom:40px;

    color:#B0BEC5;

    font-size:15px;

}

.breadcrumb a{

    color:#B0BEC5;

    text-decoration:none;

}

.breadcrumb span{

    margin:0 10px;

}

/*=========================
      TAG
=========================*/

.chapter-tag{

    display:inline-block;

    padding:10px 20px;

    border-radius:30px;

    background:rgba(255,213,79,.15);

    color:#FFD54F;

    border:1px solid rgba(255,213,79,.4);

    margin-bottom:25px;

}

/*=========================
      TITLE
=========================*/

.hero-content h1{

    font-size:68px;

    margin-bottom:20px;

}

.hero-content p{

    max-width:800px;

    margin:auto;

    color:#CFD8DC;

    font-size:22px;

    line-height:1.8;

}

/*=========================
      STATS
=========================*/

.chapter-stats{

    display:flex;

    justify-content:center;

    gap:60px;

    margin:60px 0;

    flex-wrap:wrap;

}

.chapter-stats div{

    min-width:120px;

}

.chapter-stats h2{

    color:#FFD54F;

    font-size:46px;

}

.chapter-stats span{

    color:#B0BEC5;

}

/*=========================
      BUTTONS
=========================*/

.hero-buttons{

    display:flex;

    gap:20px;

    flex-wrap:wrap;

    justify-content:center;

}

.primary-btn{

    padding:18px 36px;

    background:#FFD54F;

    color:#1C2526;

    border-radius:10px;

    text-decoration:none;

    font-weight:bold;

}

.secondary-btn{

    padding:18px 36px;

    border:2px solid #FFD54F;

    color:#FFD54F;

    border-radius:10px;

    text-decoration:none;

}

.primary-btn:hover{

    background:#FFC107;

}

.secondary-btn:hover{

    background:#FFD54F;

    color:#1C2526;

}
/*=====================================
        VIDEO PLAYLIST SECTION
======================================*/

.video-section{

    padding:100px 8%;

    background:#1C2526;

}

/*=====================================
          SECTION TITLE
======================================*/

.section-title{

    text-align:center;

    margin-bottom:70px;

}

.section-tag{

    display:inline-block;

    padding:8px 18px;

    background:rgba(255,213,79,.12);

    border:1px solid rgba(255,213,79,.35);

    color:#FFD54F;

    border-radius:30px;

    font-size:14px;

    font-weight:600;

    letter-spacing:1px;

    text-transform:uppercase;

    margin-bottom:20px;

}

.section-title h2{

    font-size:52px;

    font-weight:700;

    color:#FFFFFF;

    margin-bottom:18px;

}

.section-title p{

    max-width:700px;

    margin:auto;

    font-size:22px;

    color:#B0BEC5;

    line-height:1.7;

}

/*=====================================
            PLAYLIST
======================================*/

.playlist{

    display:flex;

    flex-direction:column;

    gap:30px;

}

/*=====================================
            VIDEO CARD
======================================*/

.video-card{

    display:grid;

    grid-template-columns:280px 1fr auto;

    align-items:center;

    background:#263238;

    border-radius:18px;

    overflow:hidden;

    border:1px solid rgba(255,255,255,.06);

    transition:.35s;

}

.video-card:hover{

    transform:translateY(-6px);

    border-color:#FFD54F;

    box-shadow:0 20px 40px rgba(0,0,0,.35);

}

/*=====================================
            THUMBNAIL
======================================*/

.video-card img{

    width:100%;

    height:180px;

    object-fit:cover;

    display:block;

}

/*=====================================
            VIDEO INFO
======================================*/

.video-info{

    padding:35px;

}

.lecture-no{

    display:inline-block;

    color:#FFD54F;

    font-size:15px;

    font-weight:600;

    margin-bottom:10px;

}

.video-info h3{

    font-size:30px;

    color:#FFFFFF;

    margin-bottom:18px;

    line-height:1.4;

}

.video-meta{

    display:flex;

    gap:25px;

    flex-wrap:wrap;

    color:#B0BEC5;

    font-size:16px;

}

.video-meta span{

    display:flex;

    align-items:center;

    gap:6px;

}

/*=====================================
        DIFFICULTY TAGS
======================================*/

.easy{

    color:#66BB6A;

    font-weight:600;

}

.medium{

    color:#FFA726;

    font-weight:600;

}

.hard{

    color:#EF5350;

    font-weight:600;

}

/*=====================================
            WATCH BUTTON
======================================*/

.watch-btn{

    margin-right:35px;

    padding:16px 34px;

    background:#FFD54F;

    color:#1C2526;

    text-decoration:none;

    font-size:17px;

    font-weight:700;

    border-radius:10px;

    transition:.3s;

}

.watch-btn:hover{

    background:#FFC107;

    transform:scale(1.05);

}

/*=====================================
        RESPONSIVE DESIGN
======================================*/

@media(max-width:1000px){

.video-card{

grid-template-columns:1fr;

}

.video-card img{

height:230px;

}

.video-info{

padding:25px;

}

.watch-btn{

margin:0 25px 25px;

display:block;

text-align:center;

}

}

@media(max-width:768px){

.section-title h2{

font-size:38px;

}

.section-title p{

font-size:18px;

}

.video-info h3{

font-size:24px;

}

.video-meta{

font-size:15px;

gap:15px;

}

}

@media(max-width:480px){

.video-card img{

height:190px;

}

.section-title h2{

font-size:32px;

}

.section-title p{

font-size:16px;

}

.video-info{

padding:20px;

}

.video-info h3{

font-size:22px;

}

.watch-btn{

font-size:16px;

padding:14px 25px;

}

}
/*=====================================
            NOTES SECTION
======================================*/

.notes-section{

    padding:100px 8%;

    background:#202A2D;

}

.notes-grid{

    display:flex;

    flex-direction:column;

    gap:30px;

}

.note-card{

    display:grid;

    grid-template-columns:90px 1fr auto;

    align-items:center;

    background:#263238;

    padding:30px;

    border-radius:18px;

    border:1px solid rgba(255,255,255,.06);

    transition:.3s;

}

.note-card:hover{

    transform:translateY(-6px);

    border-color:#FFD54F;

    box-shadow:0 20px 35px rgba(0,0,0,.35);

}

.note-icon{

    font-size:42px;

    text-align:center;

}

.note-content h3{

    color:#FFD54F;

    font-size:28px;

    margin-bottom:10px;

}

.note-content p{

    color:#CFD8DC;

    line-height:1.6;

    margin-bottom:15px;

}

.note-meta{

    display:flex;

    gap:25px;

    flex-wrap:wrap;

    color:#B0BEC5;

    font-size:15px;

}

.note-buttons{

    display:flex;

    gap:15px;

}

.preview-btn{

    padding:14px 24px;

    border:2px solid #FFD54F;

    color:#FFD54F;

    border-radius:8px;

    text-decoration:none;

    transition:.3s;

}

.preview-btn:hover{

    background:#FFD54F;

    color:#1C2526;

}

.download-btn{

    padding:14px 24px;

    background:#FFD54F;

    color:#1C2526;

    border-radius:8px;

    text-decoration:none;

    font-weight:700;

    transition:.3s;

}

.download-btn:hover{

    background:#FFC107;

}

@media(max-width:900px){

.note-card{

grid-template-columns:1fr;

text-align:center;

}

.note-buttons{

justify-content:center;

margin-top:25px;

}

.note-meta{

justify-content:center;

}

.note-icon{

margin-bottom:20px;

}

}
/*=====================================
            PYQ SECTION
======================================*/

.pyq-section{

    padding:100px 8%;

    background:#1C2526;

}

.pyq-grid{

    display:flex;

    flex-direction:column;

    gap:30px;

}

.pyq-card{

    display:grid;

    grid-template-columns:90px 1fr auto;

    align-items:center;

    padding:30px;

    background:#263238;

    border-radius:18px;

    border:1px solid rgba(255,255,255,.06);

    transition:.35s;

}

.pyq-card:hover{

    transform:translateY(-6px);

    border-color:#FFD54F;

    box-shadow:0 20px 35px rgba(0,0,0,.35);

}

.pyq-icon{

    font-size:42px;

    text-align:center;

}

.pyq-content h3{

    color:#FFD54F;

    font-size:28px;

    margin-bottom:10px;

}

.pyq-content p{

    color:#CFD8DC;

    margin-bottom:15px;

    line-height:1.6;

}

.pyq-meta{

    display:flex;

    gap:25px;

    flex-wrap:wrap;

    color:#B0BEC5;

    font-size:15px;

}

.pyq-buttons{

    display:flex;

    gap:15px;

}

.solve-btn{

    padding:14px 22px;

    border:2px solid #FFD54F;

    color:#FFD54F;

    text-decoration:none;

    border-radius:8px;

    transition:.3s;

}

.solve-btn:hover{

    background:#FFD54F;

    color:#1C2526;

}

.download-btn{

    padding:14px 22px;

    background:#FFD54F;

    color:#1C2526;

    text-decoration:none;

    border-radius:8px;

    font-weight:700;

    transition:.3s;

}

.download-btn:hover{

    background:#FFC107;

}

@media(max-width:900px){

.pyq-card{

grid-template-columns:1fr;

text-align:center;

}

.pyq-icon{

margin-bottom:20px;

}

.pyq-meta{

justify-content:center;

}

.pyq-buttons{

justify-content:center;

margin-top:25px;

}

}
/*=====================================
                FAQ SECTION
======================================*/

.faq-section{

    padding:100px 8%;

    background:#202A2D;

}

.faq-container{

    max-width:900px;

    margin:60px auto 0;

}

.faq-item{

    background:#263238;

    border-radius:14px;

    margin-bottom:20px;

    overflow:hidden;

    border:1px solid rgba(255,255,255,.06);

}

.faq-question{

    width:100%;

    background:none;

    border:none;

    color:#FFFFFF;

    font-size:20px;

    font-weight:600;

    padding:25px 30px;

    display:flex;

    justify-content:space-between;

    align-items:center;

    cursor:pointer;

    transition:.3s;

}

.faq-question:hover{

    color:#FFD54F;

}

.faq-question span{

    font-size:28px;

    color:#FFD54F;

}

.faq-answer{

    max-height:0;

    overflow:hidden;

    transition:max-height .4s ease;

}

.faq-answer p{

    padding:0 30px 25px;

    color:#CFD8DC;

    line-height:1.8;

    font-size:17px;

}
/*=====================================
                FOOTER
======================================*/

.footer{

    background:#151D1F;

    padding:70px 8% 25px;

    border-top:1px solid rgba(255,255,255,.08);

}

.footer-container{

    display:grid;

    grid-template-columns:2fr 1fr 1fr 1fr;

    gap:50px;

}

.footer-column h2{

    color:#FFD54F;

    font-size:34px;

    margin-bottom:15px;

}

.footer-column h3{

    color:#FFFFFF;

    margin-bottom:20px;

    font-size:22px;

}

.footer-column p{

    color:#B0BEC5;

    line-height:1.8;

}

.footer-text{

    margin-top:15px;

}

.footer-column ul{

    list-style:none;

}

.footer-column li{

    margin-bottom:14px;

}

.footer-column a{

    text-decoration:none;

    color:#B0BEC5;

    transition:.3s;

}

.footer-column a:hover{

    color:#FFD54F;

    padding-left:6px;

}

.social-links{

    display:flex;

    flex-direction:column;

    gap:15px;

}

.footer-bottom{

    margin-top:60px;

    padding-top:25px;

    border-top:1px solid rgba(255,255,255,.08);

    text-align:center;

    color:#90A4AE;

    font-size:15px;

}

/*=====================================
            RESPONSIVE
======================================*/

@media(max-width:900px){

.footer-container{

grid-template-columns:1fr 1fr;

}

}

@media(max-width:600px){

.footer-container{

grid-template-columns:1fr;

text-align:center;

}

.social-links{

align-items:center;

}

.footer-column a:hover{

padding-left:0;

}

}