/* =========================================
   VARIABLES & SETUP
========================================= */
:root {
    /* Colors */
    --c-blue: #0E2A47;
    --c-blue-hover: #1A3E66;
    
    --c-orange: #F96D00;
    --c-orange-hover: #E35D00;
    
    --c-white: #FFFFFF;
    --c-light: #F4F6F9;
    
    --c-dark: #1A1A1A;
    --c-gray-dark: #333333;
    --c-gray: #7A8B99;
    
    --c-border: #E0E6ED;
    
    /* Typography */
    --f-heading: 'Jost', sans-serif;
    --f-body: 'Roboto', sans-serif;
    
    /* UI */
    --t-base: 0.3s ease;
    --radius: 6px;
    --radius-lg: 12px;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-lg: 0 15px 35px rgba(0,0,0,0.1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--f-body);
    color: var(--c-gray-dark);
    background-color: var(--c-white);
    line-height: 1.6;
}

/* =========================================
   TYPOGRAPHY & UTILITIES
========================================= */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--f-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: var(--c-blue);
    transition: var(--t-base);
}

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.container-medium { max-width: 900px; }

.section { padding: 6rem 0; }

.bg-blue { background-color: var(--c-blue); }
.bg-orange { background-color: var(--c-orange); }
.bg-white { background-color: var(--c-white); }
.bg-light { background-color: var(--c-light); }
.bg-dark { background-color: var(--c-dark); }
.bg-gray-dark { background-color: #2D3748; }

.text-blue { color: var(--c-blue); }
.text-orange { color: var(--c-orange); }
.text-white { color: var(--c-white); }
.text-dark { color: var(--c-dark); }
.text-muted { color: var(--c-gray); }
.text-gray { color: #A0AEC0; }
.text-center { text-align: center; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.text-lg { font-size: 1.1rem; }
.text-md { font-size: 1.1rem; }
.font-size-sm { font-size: 0.9rem; }

.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.mt-n5 { margin-top: -3rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }
.pt-5 { padding-top: 3rem; }
.pb-3 { padding-bottom: 1rem; }
.pb-5 { padding-bottom: 3rem; }
.pb-0 { padding-bottom: 0; }
.ml-3 { margin-left: 1rem; }
.mr-2 { margin-right: 0.5rem; }
.w-100 { width: 100%; }

.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.flex-column { flex-direction: column; }

.grid-2-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.grid-3-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.gap-2 { gap: 0.8rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }
.gap-5 { gap: 4rem; }

.border-light { border: 1px solid var(--c-border); }
.border-dashed { border: 2px dashed #CBD5E0; }
.border-top-gray { border-top: 1px solid #4A5568; }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.sub-heading {
    display: inline-block; font-weight: 700; text-transform: uppercase;
    letter-spacing: 2px; font-size: 0.85rem; margin-bottom: 0.5rem;
}
.section-title { font-size: 2.5rem; }

/* =========================================
   BUTTONS
========================================= */
.btn {
    display: inline-flex; align-items: center;
    font-family: var(--f-heading); font-weight: 600; font-size: 0.95rem;
    padding: 0.8rem 2rem; text-transform: uppercase; letter-spacing: 0.5px;
    border-radius: var(--radius); cursor: pointer; transition: var(--t-base);
    border: 2px solid transparent;
}
.btn-orange { background-color: var(--c-orange); color: var(--c-white); }
.btn-orange:hover { background-color: var(--c-orange-hover); color: var(--c-white); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(249, 109, 0, 0.3); }
.btn-blue { background-color: var(--c-blue); color: var(--c-white); }
.btn-blue:hover { background-color: var(--c-blue-hover); color: var(--c-white); }
.btn-outline-white { background-color: transparent; color: var(--c-white); border-color: var(--c-white); }
.btn-outline-white:hover { background-color: var(--c-white); color: var(--c-blue); }
.btn-outline-blue { background-color: transparent; color: var(--c-blue); border-color: var(--c-blue); }
.btn-outline-blue:hover { background-color: var(--c-blue); color: var(--c-white); }

/* =========================================
   TOP BAR & HEADER
========================================= */
.top-bar { background-color: var(--c-gray-dark); color: var(--c-light); font-size: 0.85rem; padding: 0.5rem 0; }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
.contact-info a, .quick-links a { color: var(--c-light); margin-right: 1.5rem; }
.contact-info a:hover, .quick-links a:hover { color: var(--c-orange); }

.header { position: sticky; top: 0; z-index: 1000; padding: 1rem 0; border-bottom: 1px solid var(--c-border); transition: var(--t-base); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }

.logo { display: flex; align-items: center; gap: 0.8rem; }
.logo-box {
    width: 45px; height: 45px; background: var(--c-blue); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--f-heading); font-weight: 800; font-size: 1.5rem; border-radius: 4px;
}
.logo-text { font-family: var(--f-heading); font-weight: 800; line-height: 1; color: var(--c-blue); font-size: 1.2rem; text-transform: uppercase; }
.logo-text span { font-weight: 500; font-size: 0.8rem; color: var(--c-gray); display: block; letter-spacing: 1px; }

.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-item { font-weight: 600; color: var(--c-blue); font-size: 0.95rem; text-transform: uppercase; }
.nav-item:hover { color: var(--c-orange); }

.mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--c-blue); cursor: pointer; }

/* Mobile Menu */
.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 100%; max-width: 300px; height: 100vh;
    background: var(--c-white); z-index: 1001; transition: var(--t-base); box-shadow: -5px 0 20px rgba(0,0,0,0.1);
    display: flex; align-items: center; justify-content: center;
}
.mobile-menu.active { right: 0; }
.mobile-menu-inner { padding: 3rem; width: 100%; display: flex; flex-direction: column; text-align: center; }
.close-mobile { position: absolute; top: 1.5rem; right: 1.5rem; border: none; background: none; font-size: 1.5rem; cursor: pointer; color: var(--c-blue); }
.mobile-nav-item { padding: 1rem 0; font-family: var(--f-heading); font-weight: 600; border-bottom: 1px solid var(--c-border); color: var(--c-blue); }
.mobile-nav-item:hover { color: var(--c-orange); }

/* =========================================
   HERO
========================================= */
.hero { position: relative; padding: 6rem 0; overflow: hidden; }
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: url('https://images.unsplash.com/photo-1540575467063-178a50c2df87?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
    opacity: 0.15; mix-blend-mode: overlay;
}
.hero-container { position: relative; z-index: 1; }
.hero-content { max-width: 700px; }

.badge-accent {
    display: inline-block; padding: 0.4rem 1rem; border-radius: 50px;
    background: rgba(249, 109, 0, 0.2); color: var(--c-orange); border: 1px solid var(--c-orange);
    font-weight: 600; text-transform: uppercase; font-size: 0.8rem; letter-spacing: 1px;
}
.hero-title { font-size: clamp(3rem, 5vw, 4rem); margin-bottom: 1.2rem; }
.hero-desc { font-size: 1.15rem; color: #D1D5DB; margin-bottom: 2.5rem; font-weight: 300; }

.hero-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; background: rgba(255,255,255,0.05); padding: 1.5rem; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.1); backdrop-filter: blur(5px); }
.info-block { display: flex; gap: 1rem; align-items: flex-start; }
.info-block i { font-size: 1.5rem; margin-top: 0.2rem; }
.info-block strong { display: block; font-size: 1.05rem; }
.info-block span { font-size: 0.85rem; color: #A0AEC0; }

.hero-actions { display: flex; align-items: center; }

/* =========================================
   STATS BAR
========================================= */
.stats-section { margin-top: -30px; position: relative; z-index: 10; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-radius: var(--radius); text-align: center; }
.stat-box { padding: 2.5rem 1rem; border-right: 1px solid var(--c-border); }
.stat-box:last-child { border-right: none; }
.stat-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.stat-box h3 { font-size: 2rem; color: var(--c-blue); margin-bottom: 0.2rem; }
.stat-box p { font-weight: 500; font-size: 0.9rem; text-transform: uppercase; color: var(--c-gray); }

/* =========================================
   EVENT ZONES (Cards)
========================================= */
.zone-card { border-radius: var(--radius); overflow: hidden; transition: var(--t-base); position: relative; }
.zone-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg) !important; }
.zone-img { position: relative; height: 200px; width: 100%; }
.zone-img img { width: 100%; height: 100%; object-fit: cover; }
.zone-badge { position: absolute; top: 15px; right: 15px; padding: 0.3rem 0.8rem; border-radius: 4px; font-weight: 600; font-size: 0.85rem; }
.zone-info h3 { font-size: 1.4rem; }

/* =========================================
   SCHEDULE TABS
========================================= */
.tabs-header { border-bottom: 2px solid var(--c-border); }
.tab-btn {
    background: none; border: none; font-family: var(--f-heading); font-size: 1.1rem;
    font-weight: 600; padding: 1rem 2rem; color: var(--c-gray); cursor: pointer; transition: var(--t-base);
    border-bottom: 3px solid transparent; margin-bottom: -2px;
}
.tab-btn.active { color: var(--c-blue); border-bottom-color: var(--c-orange); }
.tab-btn:hover { color: var(--c-blue); }

.tab-content { display: none; animation: fadeIn 0.4s; }
.tab-content.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.schedule-list { max-width: 800px; margin: 0 auto; background: var(--c-white); border: 1px solid var(--c-border); border-radius: var(--radius); }
.s-item { display: grid; grid-template-columns: 120px 1fr; gap: 2rem; padding: 1.5rem 2rem; border-bottom: 1px solid var(--c-border); }
.s-item:last-child { border-bottom: none; }
.s-time { font-family: var(--f-heading); font-size: 1.1rem; }
.s-details h4 { margin-bottom: 0.3rem; }

/* =========================================
   SPONSORS
========================================= */
.gray-scale { filter: grayscale(100%); transition: var(--t-base); }
.gray-scale:hover { filter: grayscale(0%); opacity: 1 !important; transform: scale(1.05); }

/* =========================================
   FORM & FOOTER
========================================= */
.form-group select { appearance: none; }
.form-control {
    width: 100%; padding: 0.9rem; border: 1px solid var(--c-border); border-radius: var(--radius);
    font-family: var(--f-body); color: var(--c-dark); transition: var(--t-base);
}
.form-control:focus { outline: none; border-color: var(--c-orange); }

.f-links a { color: #A0AEC0; transition: var(--t-base); }
.f-links a:hover { color: var(--c-orange); padding-left: 5px; }
.social-icon:hover { background: var(--c-orange); color: #fff !important; }

/* =========================================
   MEDIA QUERIES
========================================= */
@media (max-width: 991px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .hero-info-grid, .grid-2-cols, .grid-3-cols, .grid-4-cols { grid-template-columns: 1fr; }
    .hero-content { text-align: center; margin: 0 auto; }
    .hero-info-grid { text-align: left; }
    .hero-actions { justify-content: center; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-box:nth-child(n) { border-right: none; border-bottom: 1px solid var(--c-border); }
    .stat-box:nth-child(even) { border-left: 1px solid var(--c-border); }
    .s-item { grid-template-columns: 100px 1fr; gap: 1rem; padding: 1rem; }
}
@media (max-width: 576px) {
    .top-bar { display: none; }
    .hero-title { font-size: 2.5rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .stat-box:nth-child(even) { border-left: none; }
    .tabs-header { flex-direction: column; text-align: center; }
    .tab-btn { border-bottom: none; border-left: 3px solid transparent; margin-bottom: 0; }
    .tab-btn.active { border-left-color: var(--c-orange); }
    .s-item { grid-template-columns: 1fr; gap: 0.5rem; }
}