:root{
    --primary:#005AA9;
    --primary-dark:#003366;
    --primary-light:#EAF3FF;
    --accent:#1E7DD7;
    --text:#243447;
    --white:#ffffff;
    --gray:#f5f7fa;
    --shadow:0 4px 20px rgba(0,0,0,.08);
}

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:"Segoe UI", Arial, sans-serif;
    color:var(--text);
    background:#fff;
    line-height:1.7;
}

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

header{
    background:var(--primary-dark);
    position:sticky;
    top:0;
    z-index:1000;
    box-shadow:0 2px 12px rgba(0,0,0,.2);
}

.navbar{
    max-width:1280px;
    margin:auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 25px;
}

.logo-wrapper{
    display:flex;
    align-items:center;
    gap:15px;
}

.logo{
    height:60px;
    width:auto;
}

.site-title{
    color:white;
    font-weight:700;
    font-size:1.1rem;
}

.nav-links{
    display:flex;
    gap:20px;
}

.nav-links a{
    color:white;
    text-decoration:none;
    font-weight:500;
    transition:.3s;
}

.nav-links a:hover{
    color:#b9ddff;
}

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

.hero{
    min-height:80vh;

    background:
    linear-gradient(
        rgba(0,51,102,.82),
        rgba(0,90,169,.82)
    ),
    url("../images/hero-bg.png");

    background-position:center;
    background-size:cover;

    color:white;

    display:flex;
    align-items:center;
}

.hero-content{
    max-width:1200px;
    margin:auto;
    width:100%;
    padding:40px;
}

.hero h1{
    font-size:3.3rem;
    margin-bottom:15px;
}

.hero h2{
    font-size:1.6rem;
    font-weight:300;
    margin-bottom:20px;
}

.hero-date{
    font-size:1.2rem;
    margin-bottom:25px;
}

.hero-text{
    max-width:850px;
}

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

.btn{
    display:inline-block;

    padding:14px 28px;

    background:var(--accent);
    color:white;

    text-decoration:none;
    border-radius:6px;

    font-weight:600;

    transition:.3s;
}

.btn:hover{
    background:#0e65bd;
    transform:translateY(-2px);
}

.btn-outline{
    background:transparent;
    border:2px solid white;
}

/* =========================
   LAYOUT
========================= */

.container{
    max-width:1200px;
    margin:auto;
    padding:70px 25px;
}

.section-title{
    color:var(--primary-dark);
    margin-bottom:25px;
    font-size:2rem;
}

.section-subtitle{
    color:#567;
    margin-bottom:40px;
}

/* =========================
   CARDS
========================= */

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:25px;
}

.card{
    background:white;

    border-radius:12px;

    padding:25px;

    box-shadow:var(--shadow);

    transition:.3s;
}

.card:hover{
    transform:translateY(-5px);
}

.card h3{
    color:var(--primary-dark);
    margin-bottom:15px;
}

/* =========================
   TRACKS
========================= */

.track-card{
    background:white;
    border-top:5px solid var(--primary);
}

.track-card ul{
    padding-left:18px;
}

.track-card li{
    margin-bottom:6px;
}

/* =========================
   INFO BOXES
========================= */

.info-box{
    background:var(--primary-light);

    border-left:5px solid var(--primary);

    padding:20px;

    border-radius:8px;
}

/* =========================
   IMPORTANT DATES
========================= */

.timeline{
    display:grid;
    gap:20px;
}

.timeline-item{
    background:white;
    padding:20px;
    box-shadow:var(--shadow);
    border-left:4px solid var(--primary);
}

/* =========================
   ARCHIVE
========================= */

.archive-grid{
    display:grid;
    grid-template-columns:
        repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.archive-card{
    background:white;
    padding:20px;
    box-shadow:var(--shadow);
    border-radius:10px;
    text-align:center;
}

/* =========================
   ACCORDION
========================= */

details{
    margin-bottom:15px;
    background:#f7f9fc;
    border-radius:8px;
    overflow:hidden;
}

summary{
    cursor:pointer;
    padding:18px;
    font-weight:600;
    color:var(--primary-dark);
}

details p{
    padding:0 18px 18px;
}

/* =========================
   VENUE
========================= */

.venue-image{
    width:100%;
    border-radius:12px;
    overflow:hidden;
    box-shadow:var(--shadow);
}

.venue-image img{
    width:100%;
    display:block;
}

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

footer{
    background:var(--primary-dark);
    color:white;
    padding:50px 20px;
}

.footer-content{
    max-width:1200px;
    margin:auto;
}

.footer-content a{
    color:#cde5ff;
    text-decoration:none;
}

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

@media(max-width:900px){

    .navbar{
        flex-direction:column;
        gap:20px;
    }

    .nav-links{
        flex-wrap:wrap;
        justify-content:center;
    }

    .hero h1{
        font-size:2.2rem;
    }

    .hero h2{
        font-size:1.2rem;
    }

}

@media(max-width:600px){

    .container{
        padding:50px 20px;
    }

    .hero{
        min-height:auto;
        padding:60px 0;
    }

    .hero h1{
        font-size:1.8rem;
    }

}