/* =========================
   GOOGLE FONT
========================= */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;700&family=Poppins:wght@300;400;500;600;700&display=swap');

/* =========================
   VARIABLES
========================= */

:root{
    --gold:#d4af37;
    --gold-light:#f4d27a;
    --dark:#111827;
    --dark2:#1c2433;
    --white:#ffffff;
    --text:#f4f4f4;
    --card:#ffffff;
    --shadow:0 15px 40px rgba(0,0,0,.25);
}

/* =========================
   RESET
========================= */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Poppins',sans-serif;
    background:#f8f7f3;
    color:#222;
    overflow-x:hidden;
}

/* =========================
   BACKGROUND
========================= */

body::before{
    content:"";
    position:fixed;
    inset:0;
    background:
    linear-gradient(rgba(10,15,25,.82),rgba(10,15,25,.88)),
    url("https://images.unsplash.com/photo-1521587760476-6c12a4b040da?auto=format&fit=crop&w=1800&q=80");
    background-size:cover;
    background-position:center;
    z-index:-2;
}

body::after{
    content:"";
    position:fixed;
    inset:0;
    background:linear-gradient(to bottom,
    rgba(0,0,0,.15),
    rgba(0,0,0,.45));
    z-index:-1;
}

/* =========================
   HEADER
========================= */

header{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    z-index:1000;
}

header h1,
header p{
    display:none;
}

/* =========================
   NAVBAR
========================= */

.nav-tabs{

    width:100%;
    display:flex;
    justify-content:space-between;
    align-items:center;

    padding:20px 70px;

    background:rgba(10,15,25,.45);
    backdrop-filter:blur(12px);

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

}

.nav-tabs::before{

content:"📖 Philippine Literature";

font-family:'Cinzel',serif;
font-size:28px;
font-weight:700;
color:var(--gold);

}
/* =========================
   NAVIGATION BUTTONS
========================= */

#tabContainer{
    display:flex;
    align-items:center;
    gap:10px;
    flex-wrap:wrap;
}

.tab-btn{
    background:none;
    border:none;
    color:#f2f2f2;
    font-size:15px;
    font-weight:500;
    padding:10px 18px;
    cursor:pointer;
    transition:.35s;
    border-radius:8px;
}

.tab-btn:hover{
    color:var(--gold);
    background:rgba(255,255,255,.08);
}

.tab-btn.active{
    color:var(--gold);
    border-bottom:3px solid var(--gold);
}

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

.container:first-of-type{

    min-height:100vh;

    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;

    text-align:center;

    padding:180px 20px 120px;

}

.container:first-of-type::before{

content:"Philippine Literature Treasury";

display:block;

font-family:'Cinzel',serif;
font-size:72px;
font-weight:700;
line-height:1.15;

color:white;

max-width:900px;

margin-bottom:25px;

}

.container:first-of-type::after{

content:"From Indigenous Oral Traditions to 21st-Century Digital Genres";

display:block;

font-size:26px;
font-weight:300;

color:#f3f3f3;

max-width:850px;

margin-bottom:70px;

}

/* =========================
   SEARCH BAR
========================= */

.search-bar{

width:100%;
max-width:700px;

padding:18px 24px;

border:none;
outline:none;

font-size:17px;

border-radius:50px;

background:white;

box-shadow:0 12px 35px rgba(0,0,0,.18);

margin-bottom:35px;

}

/* =========================
   FILTER BUTTONS ROW
========================= */

.nav-tabs{

display:flex;
align-items:center;
justify-content:space-between;
flex-wrap:wrap;

}

#tabContainer{

display:flex;
gap:12px;
flex-wrap:wrap;

}
/* =========================
   LITERATURE GRID
========================= */

.grid{
    width:100%;
    max-width:1300px;

    margin:70px auto;

    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:35px;
}

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

.card{

    background:rgba(255,255,255,.92);

    backdrop-filter:blur(18px);

    border-radius:22px;

    overflow:hidden;

    box-shadow:0 20px 40px rgba(0,0,0,.18);

    transition:.45s;

    display:flex;
    flex-direction:column;

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

}

.card:hover{

transform:translateY(-12px);

box-shadow:0 30px 55px rgba(0,0,0,.30);

}

/* =========================
   IMAGE
========================= */

.card-img{

width:100%;
height:260px;

object-fit:cover;

display:block;

transition:.5s;

}

.card:hover .card-img{

transform:scale(1.05);

}

/* =========================
   CONTENT
========================= */

.card-content{

padding:28px;

display:flex;
flex-direction:column;

flex:1;

}

.badge{

display:inline-block;

width:max-content;

padding:8px 18px;

background:rgba(212,175,55,.15);

color:#9b6b00;

font-weight:600;

border-radius:30px;

font-size:13px;

margin-bottom:18px;

}

.card h3{

font-family:'Cinzel',serif;

font-size:29px;

line-height:1.3;

margin-bottom:12px;

color:#111827;

}

.card-author{

font-size:15px;

color:#666;

margin-bottom:18px;

font-style:italic;

}

.card-desc{

font-size:15px;

line-height:1.8;

color:#555;

margin-bottom:30px;

flex:1;

}

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

.btn{

width:100%;

padding:15px;

border:none;

border-radius:50px;

background:linear-gradient(135deg,#d4af37,#b8860b);

color:white;

font-size:15px;

font-weight:600;

cursor:pointer;

transition:.35s;

}

.btn:hover{

transform:translateY(-3px);

background:linear-gradient(135deg,#e3be4d,#c79614);

box-shadow:0 15px 30px rgba(212,175,55,.35);

}
/* ===========================
   HERO SECTION
=========================== */

.hero{
    position:relative;
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    overflow:hidden;
    background:
        linear-gradient(rgba(8,12,22,.72),rgba(8,12,22,.82)),
        url("https://images.unsplash.com/photo-1521587760476-6c12a4b040da?auto=format&fit=crop&w=1600&q=80")
        center center/cover no-repeat;
}

.hero-overlay{
    position:absolute;
    inset:0;
    background:
        radial-gradient(circle at top right,
        rgba(198,156,67,.20),
        transparent 60%);
}

.hero-content{
    position:relative;
    z-index:2;
    max-width:850px;
    text-align:center;
    padding:0 30px;
}

.hero .subtitle{
    color:#d4af37;
    text-transform:uppercase;
    letter-spacing:4px;
    font-size:.9rem;
    margin-bottom:20px;
    font-weight:600;
}

.hero h1{
    font-family:"Cinzel",serif;
    font-size:4.5rem;
    line-height:1.1;
    color:#fff;
    margin-bottom:25px;
    text-shadow:0 10px 30px rgba(0,0,0,.45);
}

.hero p{
    color:#e5e7eb;
    font-size:1.15rem;
    line-height:1.9;
    max-width:760px;
    margin:auto;
}

.hero-buttons{
    display:flex;
    justify-content:center;
    gap:20px;
    margin-top:45px;
    flex-wrap:wrap;
}

.primary-btn,
.secondary-btn{
    text-decoration:none;
    padding:14px 36px;
    border-radius:50px;
    font-weight:600;
    transition:.35s;
}

.primary-btn{
    background:#c69c43;
    color:#111827;
}

.primary-btn:hover{
    transform:translateY(-4px);
    background:#dcb35c;
}

.secondary-btn{
    border:2px solid rgba(255,255,255,.35);
    color:white;
    backdrop-filter:blur(8px);
}

.secondary-btn:hover{
    background:rgba(255,255,255,.08);
}
/* ===================================
   EXPLORER SECTION
=================================== */

.container{
    width:90%;
    max-width:1300px;
    margin:auto;
}

.section-title{
    font-family:"Cinzel",serif;
    font-size:3rem;
    color:#fff;
    text-align:center;
    margin-bottom:15px;
}

.section-subtitle{
    color:#d6d6d6;
    text-align:center;
    max-width:750px;
    margin:0 auto 45px;
    line-height:1.8;
    font-size:1rem;
}

/* ===================================
   SEARCH BAR
=================================== */

.search-bar{
    width:100%;
    max-width:750px;
    display:block;
    margin:0 auto 35px;
    padding:18px 24px;
    border:none;
    border-radius:50px;
    background:#fff;
    font-size:1rem;
    box-shadow:0 15px 35px rgba(0,0,0,.15);
    transition:.3s;
}

.search-bar:focus{
    outline:none;
    transform:translateY(-2px);
    box-shadow:0 20px 40px rgba(198,156,67,.25);
}

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

.nav-tabs{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:12px;
    margin-bottom:55px;
    background:transparent;
    position:static;
}

.tab-btn{
    padding:12px 24px;
    border:none;
    border-radius:50px;
    cursor:pointer;
    background:rgba(255,255,255,.08);
    color:#fff;
    backdrop-filter:blur(10px);
    transition:.35s;
    font-weight:500;
}

.tab-btn:hover{
    background:#c69c43;
    color:#111827;
}

.tab-btn.active{
    background:#c69c43;
    color:#111827;
}

/* ===================================
   CARD GRID
=================================== */

.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:35px;
    margin-bottom:100px;
}

.card{
    background:#fff;
    border-radius:22px;
    overflow:hidden;
    box-shadow:0 15px 35px rgba(0,0,0,.15);
    transition:.35s;
}

.card:hover{
    transform:translateY(-10px);
    box-shadow:0 25px 50px rgba(0,0,0,.25);
}

.card-img{
    width:100%;
    height:230px;
    object-fit:cover;
}

.card-content{
    padding:25px;
}

.badge{
    display:inline-block;
    background:#c69c43;
    color:#fff;
    padding:6px 15px;
    border-radius:50px;
    font-size:.8rem;
    margin-bottom:15px;
}

.card h3{
    font-family:"Cinzel",serif;
    font-size:1.5rem;
    margin-bottom:10px;
    color:#111827;
}

.card-author{
    color:#666;
    margin-bottom:15px;
    font-style:italic;
}

.card-desc{
    color:#555;
    line-height:1.7;
    margin-bottom:25px;
}

.btn{
    width:100%;
    border:none;
    padding:14px;
    border-radius:50px;
    background:#c69c43;
    color:#fff;
    cursor:pointer;
    font-weight:600;
    transition:.3s;
}

.btn:hover{
    background:#ad842f;
}
/* ===================================
   MODAL
=================================== */

.modal{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(10,15,30,.82);
    backdrop-filter:blur(10px);
    justify-content:center;
    align-items:center;
    padding:30px;
    z-index:9999;
}

.modal-content{

    width:100%;
    max-width:900px;

    max-height:90vh;

    overflow-y:auto;

    background:white;

    border-radius:25px;

    padding:45px;

    position:relative;

    animation:popup .35s ease;

    box-shadow:0 30px 60px rgba(0,0,0,.35);

}

@keyframes popup{

from{

opacity:0;
transform:translateY(40px) scale(.96);

}

to{

opacity:1;
transform:translateY(0) scale(1);

}

}

.close-btn{

position:absolute;

top:20px;
right:25px;

width:45px;
height:45px;

border:none;

border-radius:50%;

background:#c69c43;

color:white;

font-size:22px;

cursor:pointer;

transition:.35s;

}

.close-btn:hover{

transform:rotate(90deg);

background:#ad842f;

}

.modal h2{

font-family:"Cinzel",serif;

font-size:2.3rem;

margin-bottom:10px;

color:#111827;

}

.modal h4{

margin-top:25px;

margin-bottom:12px;

font-size:1.1rem;

color:#c69c43;

}

.modal p{

line-height:1.9;

color:#555;

}

blockquote{

background:#f9f9f9;

padding:20px;

border-left:6px solid #c69c43;

font-style:italic;

border-radius:10px;

margin-top:10px;

margin-bottom:25px;

color:#444;

}

.video-container{

position:relative;

padding-bottom:56.25%;

height:0;

overflow:hidden;

border-radius:15px;

margin-top:20px;

}

.video-container iframe{

position:absolute;

top:0;
left:0;

width:100%;
height:100%;

border:none;

}

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

footer{

background:#0f172a;

padding:80px 20px;

text-align:center;

color:#d1d5db;

margin-top:100px;

}

footer h2{

font-family:"Cinzel",serif;

font-size:2rem;

color:white;

margin-bottom:18px;

}

footer p{

margin:8px 0;

font-size:15px;

color:#cbd5e1;

}

.return-top{

margin-top:40px;

}

.return-btn{

display:inline-flex;

align-items:center;

gap:12px;

padding:14px 34px;

border-radius:50px;

background:#c69c43;

color:white;

text-decoration:none;

font-weight:600;

transition:.35s;

}

.return-btn:hover{

background:#ad842f;

transform:translateY(-4px);

box-shadow:0 20px 35px rgba(198,156,67,.35);

}

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

@media(max-width:768px){

.hero h1{

font-size:3rem;

}

.section-title{

font-size:2.2rem;

}

.modal-content{

padding:30px;

}

.card-img{

height:200px;

}

}
/*==========================
HEADER
==========================*/

.site-header{

    position:fixed;

    top:0;
    left:0;

    width:100%;

    padding:18px 70px;

    display:flex;

    justify-content:space-between;

    align-items:center;

    background:rgba(8,12,22,.65);

    backdrop-filter:blur(12px);

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

    z-index:9999;

}

/*==========================
LOGO
==========================*/

.logo{

    display:flex;

    align-items:center;

    gap:12px;

    font-family:"Cinzel",serif;

    color:#d4af37;

    font-size:1.8rem;

    font-weight:700;

}

.logo i{

    font-size:1.5rem;

}

/*==========================
NAVIGATION
==========================*/

.main-nav{

    display:flex;

    align-items:center;

    gap:35px;

}

.main-nav a{

    text-decoration:none;

    color:white;

    font-size:16px;

    transition:.3s;

    position:relative;

}

.main-nav a:hover{

    color:#d4af37;

}

.main-nav a.active{

    color:#d4af37;

}

.main-nav a.active::after{

    content:"";

    position:absolute;

    left:0;

    bottom:-8px;

    width:100%;

    height:3px;

    background:#d4af37;

}

/*==========================
MOBILE
==========================*/

@media(max-width:900px){

.site-header{

padding:15px 25px;

flex-direction:column;

gap:15px;

}

.main-nav{

flex-wrap:wrap;

justify-content:center;

gap:20px;

}

.logo{

font-size:1.5rem;

}

}
/*=========================
MOBILE NAVBAR
=========================*/

@media (max-width:768px){

    .navbar{

        position:relative;

        padding:16px 20px;

        border-radius:18px;

    }

    .logo{

        font-size:1.3rem;

    }

    .nav-links{

        position:absolute;

        top:100%;

        left:0;

        width:100%;

        background:rgba(8,20,33,.97);

        backdrop-filter:blur(20px);

        border-radius:18px;

        display:none;

        flex-direction:column;

        padding:18px 0;

        gap:0;

        margin-top:10px;

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

    }

    .nav-links.active{

        display:flex;

    }

    .nav-links li{

        width:100%;

    }

    .nav-links a{

        display:block;

        padding:15px 25px;

        text-align:center;

    }

    .nav-links a::after{

        display:none;

    }

    .menu-toggle{

        display:flex;

        justify-content:center;

        align-items:center;

        cursor:pointer;

        color:var(--gold);

        font-size:1.6rem;

    }

    .hero{

        padding:150px 20px 100px;

    }

    .hero h1{

        font-size:3.2rem;

    }

    .subtitle{

        letter-spacing:3px;

        font-size:.8rem;

    }

    .description{

        font-size:1rem;

        line-height:1.8;

    }

    .hero-buttons{

        flex-direction:column;

        align-items:center;

        gap:18px;

        margin-bottom:90px;

    }

    .primary-btn,
    .secondary-btn{

        width:260px;

        text-align:center;

    }

    section h2{

        font-size:2.3rem;

    }

    .cards,
    .featured-grid{

        grid-template-columns:1fr;

    }

    .timeline{

        flex-direction:column;

    }

    .timeline::before{

        display:none;

    }

    .time-item{

        width:100%;

    }

    .quote blockquote{

        font-size:2rem;

    }

}

/*=========================
SMALL PHONES
=========================*/

@media (max-width:480px){

    .navbar{

        width:94%;

        margin:12px auto;

    }

    .logo{

        font-size:1.15rem;

    }

    .hero{

        min-height:100vh;

        padding:145px 18px 90px;

    }

    .hero h1{

        font-size:2.4rem;

        line-height:1.2;

    }

    .description{

        font-size:.95rem;

    }

    .primary-btn,
    .secondary-btn{

        width:100%;

        max-width:280px;

        padding:16px;

    }

    .scroll-indicator{

        bottom:15px;

        font-size:.8rem;

    }

    section{

        padding:80px 0;

    }

    section h2{

        font-size:1.9rem;

        margin-bottom:45px;

    }

    .card,
    .featured-card{

        padding:30px;

    }

    .featured-card h3{

        font-size:1.6rem;

    }

    .quote{

        padding:70px 20px;

    }

    .quote blockquote{

        font-size:1.5rem;

    }

    .quote blockquote::before,
    .quote blockquote::after{

        display:none;

    }

    footer{

        padding:60px 20px;

    }

}

/*=========================
VERY SMALL DEVICES
=========================*/

@media (max-width:360px){

    .hero h1{

        font-size:2rem;

    }

    .description{

        font-size:.9rem;

    }

    .logo{

        font-size:1rem;

    }

}