/* =========================================
   VARIABLES & SETUP
========================================= */
:root {
    /* Colors */
    --c-primary: #0A192F;
    --c-primary-light: #112240;
    --c-primary-dark: #020c1b;
    
    --c-gold: #C5A059;
    --c-gold-hover: #D4AF37;
    
    --c-bg-light: #F8F9FA;
    --c-bg-light-alt: #F1F3F5;
    --c-bg-white: #FFFFFF;
    
    --c-text-dark: #1E293B;
    --c-text-body: #475569;
    --c-text-muted: #64748B;
    --c-text-light: #E2E8F0;
    
    --c-border: #E2E8F0;
    --c-success: #10B981;
    --c-danger: #EF4444;
    
    /* Typography */
    --f-heading: 'Playfair Display', serif;
    --f-body: 'Lato', sans-serif;
    
    /* UI */
    --t-base: 0.3s ease;
    --radius: 4px;
    --shadow-main: 0 10px 25px rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
}

* {
    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-text-body);
    background-color: var(--c-bg-white);
    line-height: 1.6;
}

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

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

ul { list-style: none; }

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.container-medium { max-width: 900px; }
.container-flex { display: flex; justify-content: space-between; align-items: center; }

.section { padding: 5rem 0; }
.bg-light { background-color: var(--c-bg-light); }
.bg-light-alt { background-color: var(--c-bg-light-alt); }
.bg-white { background-color: var(--c-bg-white); }
.bg-primary { background-color: var(--c-primary); }

.text-gold { color: var(--c-gold); }
.text-primary { color: var(--c-primary); }
.text-white { color: #fff; }
.text-light { color: var(--c-text-light); }
.text-muted { color: var(--c-text-muted); }
.text-dark { color: var(--c-text-dark); }
.text-success { color: var(--c-success); }
.text-danger { color: var(--c-danger); }
.text-center { text-align: center; }
.italic { font-style: italic; }
.font-serif { font-family: var(--f-heading); }
.font-size-sm { font-size: 0.85rem; }

.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; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 1rem; }
.mr-2 { margin-right: 0.5rem; }

.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }
.pt-5 { padding-top: 3rem; }
.pb-4 { padding-bottom: 2rem; }
.w-100 { width: 100%; }

.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.d-flex { display: flex; }
.d-inline-block { display: inline-block; }
.d-block { display: block; }
.overflow-hidden { overflow: hidden; }

.border-0 { border: none !important; }
.border-light { border: 1px solid var(--c-border); }
.border-top-gold { border-top: 4px solid var(--c-gold); }
.border-bottom-light { border-bottom: 1px solid rgba(255,255,255,0.1); }

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

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

.sub-heading {
    display: inline-block;
    color: var(--c-gold);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}
.section-title { font-size: 2.2rem; }
.section-desc { font-size: 1.05rem; }

/* =========================================
   BUTTONS
========================================= */
.btn {
    display: inline-flex; align-items: center;
    font-family: var(--f-body); font-weight: 700; font-size: 0.9rem;
    padding: 0.8rem 1.8rem; text-transform: uppercase; letter-spacing: 1px;
    border-radius: 2px; cursor: pointer; transition: var(--t-base);
    border: 1px solid transparent;
}
.btn-primary {
    background-color: var(--c-primary); color: #fff;
}
.btn-primary:hover {
    background-color: var(--c-primary-light); color: #fff;
    box-shadow: 0 4px 12px rgba(10, 25, 47, 0.2);
}
.btn-outline-white {
    background-color: transparent; color: #fff; border-color: #fff;
}
.btn-outline-white:hover {
    background-color: #fff; color: var(--c-primary);
}
.btn-outline-dark {
    background-color: transparent; color: var(--c-primary); border-color: var(--c-primary);
}
.btn-outline-dark:hover {
    background-color: var(--c-primary); color: #fff;
}

/* =========================================
   TOP BAR & NAVIGATION
========================================= */
.top-bar {
    background-color: var(--c-bg-light-alt);
    border-bottom: 1px solid var(--c-border);
    padding: 0.5rem 0; font-size: 0.8rem; font-weight: 700;
}
.stock-ticker { color: var(--c-text-dark); }
.top-links { display: flex; align-items: center; gap: 1rem; }
.top-links a { color: var(--c-text-body); }
.top-links a:hover { color: var(--c-primary); }
.top-links .divider { width: 1px; height: 12px; background: #cbd5e1; }

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

.logo { display: flex; align-items: center; gap: 0.8rem; }
.logo-mark {
    width: 40px; height: 40px; background: var(--c-primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--f-heading); font-size: 1.5rem; border-radius: 2px;
}
.logo-text { font-family: var(--f-body); font-weight: 900; line-height: 1; color: var(--c-primary); letter-spacing: 1px; }
.logo-text small { font-weight: 400; font-size: 0.7rem; letter-spacing: 3px; color: var(--c-gold); display: block; }

.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-item { font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; color: var(--c-text-dark); }
.nav-item:hover { color: var(--c-gold); }

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

/* Mobile Menu */
.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 100%; max-width: 300px; height: 100vh;
    background: var(--c-primary); box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    z-index: 1001; transition: var(--t-base); 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; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }
.mobile-nav-item { padding: 1rem 0; border-bottom: 1px solid rgba(255,255,255,0.1); font-weight: 700; color: #fff; text-transform: uppercase; font-size: 0.9rem; letter-spacing: 1px; }
.mobile-nav-item:hover { color: var(--c-gold); }

/* =========================================
   HERO & ANNOUNCEMENT
========================================= */
.hero { position: relative; padding: 5rem 0; background-color: var(--c-primary); color: #fff; overflow: hidden; }
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
    opacity: 0.15; mix-blend-mode: luminosity; z-index: 0;
}
.hero-container { position: relative; z-index: 1; }

.badge-gold {
    display: inline-block; padding: 0.3rem 1rem; border: 1px solid var(--c-gold);
    color: var(--c-gold); text-transform: uppercase; font-size: 0.8rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 1.5rem;
}
.hero-title { font-size: clamp(2.5rem, 4vw, 3.5rem); color: #fff; margin-bottom: 1.2rem; }
.hero-desc { font-size: 1.1rem; color: var(--c-text-light); margin-bottom: 2.5rem; font-weight: 300; }

.event-details-card {
    display: flex; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius); margin-bottom: 2.5rem; backdrop-filter: blur(5px);
}
.ed-item { display: flex; align-items: flex-start; gap: 1rem; padding: 1.5rem; flex: 1; }
.border-right { border-right: 1px solid rgba(255,255,255,0.1); }
.ed-item i { font-size: 1.2rem; color: var(--c-gold); margin-top: 0.2rem; }
.ed-item strong { display: block; color: #fff; font-size: 0.95rem; }
.ed-item span { display: block; font-size: 0.85rem; color: var(--c-text-light); }

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

.announcement-bar { background-color: var(--c-primary-dark); color: var(--c-text-light); padding: 1rem 0; font-size: 0.9rem; text-align: center; }
.text-underline { text-decoration: underline; }
.text-underline:hover { color: var(--c-gold); }

/* =========================================
   OVERVIEW & HIGHLIGHTS
========================================= */
.overview-img-wrap { position: relative; padding: 0 2rem 2rem 0; }
.overview-img-wrap img { width: 100%; display: block; }
.year-badge {
    position: absolute; right: 0; bottom: 0; background: var(--c-primary); color: #fff;
    padding: 1.5rem; border-radius: var(--radius); text-align: center; font-family: var(--f-heading); font-size: 3rem; line-height: 1;
}
.year-badge small { display: block; font-family: var(--f-body); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; color: var(--c-gold); margin-top: 0.5rem; }

.check-list li { margin-bottom: 0.8rem; font-weight: 700; color: var(--c-text-dark); }
.check-list i { margin-right: 0.8rem; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }
.stat-card { background: #fff; padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow-sm); border-top: 3px solid var(--c-gold); }
.stat-icon { font-size: 1.5rem; color: var(--c-primary); margin-bottom: 1rem; }
.stat-card h3 { font-size: 2.5rem; color: var(--c-text-dark); margin-bottom: 0.2rem; }
.stat-card p { font-size: 0.9rem; font-weight: 700; color: var(--c-text-muted); text-transform: uppercase; margin-bottom: 1rem; }
.trend { display: inline-block; font-size: 0.8rem; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 50px; }
.trend.up { background: rgba(16, 185, 129, 0.1); color: var(--c-success); }
.trend.neutral { background: var(--c-bg-light); color: var(--c-text-muted); }

/* =========================================
   SPEAKERS
========================================= */
.speakers-list { margin: 0 auto; }
.speaker-row { display: flex; gap: 2rem; align-items: center; padding-bottom: 2rem; margin-bottom: 2rem; border-bottom: 1px solid var(--c-border); }
.speaker-avatar { width: 120px; height: 120px; border-radius: 50%; overflow: hidden; flex-shrink: 0; box-shadow: var(--shadow-sm); }
.speaker-avatar img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(20%); }
.speaker-info h3 { font-size: 1.5rem; margin-bottom: 0.2rem; }
.speaker-info .role { font-weight: 700; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; }

/* =========================================
   AGENDA TABLE
========================================= */
.agenda-table { border: 1px solid var(--c-border); }
.agenda-row { display: grid; grid-template-columns: 150px 1fr 200px; padding: 1.5rem; border-bottom: 1px solid var(--c-border); align-items: center; }
.agenda-row:last-child { border-bottom: none; }
.heading-row { font-weight: 700; text-transform: uppercase; font-size: 0.85rem; letter-spacing: 1px; border-bottom: none; }
.col-time { font-weight: 700; color: var(--c-primary); }
.heading-row .col-time { color: #fff; }
.col-event strong { font-size: 1.05rem; color: var(--c-text-dark); }
.col-speaker { font-weight: 700; font-style: italic; color: var(--c-text-muted); }

/* =========================================
   FORM & FAQ
========================================= */
.form-group label { display: block; font-weight: 700; font-size: 0.85rem; margin-bottom: 0.4rem; color: var(--c-text-dark); }
.form-control {
    width: 100%; padding: 0.8rem; border: 1px solid #cbd5e1; border-radius: var(--radius);
    font-family: var(--f-body); font-size: 0.95rem; color: var(--c-text-dark); transition: var(--t-base); background: var(--c-bg-light);
}
.form-control:focus { outline: none; border-color: var(--c-primary); background: #fff; }

.radio-group { display: flex; flex-direction: column; gap: 0.5rem; }
.custom-radio { display: flex; align-items: center; cursor: pointer; font-size: 0.95rem; color: var(--c-text-dark); }
.custom-radio input { display: none; }
.radio-mark {
    width: 18px; height: 18px; border: 2px solid #cbd5e1; border-radius: 50%;
    margin-right: 10px; position: relative; transition: var(--t-base);
}
.custom-radio:hover .radio-mark { border-color: var(--c-primary); }
.custom-radio input:checked + .radio-mark { border-color: var(--c-primary); }
.custom-radio input:checked + .radio-mark::after {
    content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 8px; height: 8px; border-radius: 50%; background: var(--c-primary);
}

.accordion { border-top: 1px solid var(--c-border); }
.acc-item { border-bottom: 1px solid var(--c-border); }
.acc-header {
    padding: 1.2rem 0; font-weight: 700; color: var(--c-text-dark); display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: var(--t-base);
}
.acc-header:hover { color: var(--c-primary); }
.acc-header .icon { transition: transform 0.3s; color: var(--c-gold); }
.acc-body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.acc-item.active .icon { transform: rotate(180deg); }
.acc-item.active .acc-body { max-height: 200px; padding-bottom: 1.2rem; }

.contact-list li { margin-bottom: 0.8rem; font-size: 0.95rem; display: flex; gap: 1rem; align-items: center; }

/* =========================================
   MEDIA QUERIES
========================================= */
@media (max-width: 991px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .hero-container { grid-template-columns: 1fr; }
    .hero-empty { display: none; }
    .grid-2-cols { grid-template-columns: 1fr; gap: 2rem; }
    .overview-img-wrap { padding: 0 0 2rem 0; }
    .agenda-row { grid-template-columns: 100px 1fr; gap: 1rem; }
    .heading-row .col-speaker, .agenda-row .col-speaker { display: none; } /* Hide speaker col on tablet */
}
@media (max-width: 576px) {
    .top-bar { display: none; }
    .hero-title { font-size: 2.2rem; }
    .event-details-card { flex-direction: column; }
    .border-right { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
    .speaker-row { flex-direction: column; align-items: flex-start; text-align: center; gap: 1rem; }
    .speaker-avatar { margin: 0 auto; }
    .form-container { padding: 2rem !important; }
}