/* =========================================
   VARIABLES & SETUP
========================================= */
:root {
    /* Colors */
    --c-green: #2C4A3B;
    --c-green-hover: #1e3529;
    
    --c-beige: #F4F1EA;
    --c-beige-dark: #e0d7c6;
    
    --c-navy: #1C2331;
    --c-white: #FFFFFF;
    
    --c-muted: #6B7280;
    --c-gray: #9CA3AF;
    
    /* Typography */
    --f-heading: 'Cinzel', serif;
    --f-body: 'Work Sans', sans-serif;
    
    /* UI */
    --t-base: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --radius: 2px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--f-body);
    font-weight: 300;
    color: var(--c-navy);
    background-color: var(--c-white);
    line-height: 1.7;
}

/* =========================================
   TYPOGRAPHY & UTILITIES
========================================= */
h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--f-heading);
    font-weight: 500;
    line-height: 1.25;
}

.font-body { font-family: var(--f-body); }
.font-serif-italic { font-family: var(--f-heading); font-style: italic; font-weight: 400; }

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

ul { list-style: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.container-medium { max-width: 800px; }

.section { padding: 8rem 0; }
.bg-beige { background-color: var(--c-beige); }
.bg-navy { background-color: var(--c-navy); }
.bg-white { background-color: var(--c-white); }

.text-green { color: var(--c-green); }
.text-navy { color: var(--c-navy); }
.text-beige { color: var(--c-beige); }
.text-white { color: var(--c-white); }
.text-muted { color: var(--c-muted); }
.text-gray { color: var(--c-gray); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-uppercase { text-transform: uppercase; }
.tracking-widest { letter-spacing: 3px; }

.fw-300 { font-weight: 300; }
.fw-400 { font-weight: 400; }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.text-xs { font-size: 0.8rem; }
.text-sm { font-size: 0.9rem; }
.text-lg { font-size: 1.2rem; }
.text-3xl { font-size: 2.5rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.pt-3 { padding-top: 1rem; }
.pt-5 { padding-top: 3rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-0 { padding-bottom: 0; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }
.p-5 { padding: 3rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.w-100 { width: 100%; }

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

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

.rounded { border-radius: var(--radius); }
.rounded-top { border-top-left-radius: 8px; border-top-right-radius: 8px; }
.shadow-sm { box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
.shadow-lg { box-shadow: 0 15px 35px rgba(28,35,49,0.08); }
.border-bottom-beige { border-bottom: 1px solid rgba(244, 241, 234, 0.2); }

.img-fluid { max-width: 100%; height: auto; display: block; }

.section-top-label {
    display: inline-block; font-size: 0.75rem; text-transform: uppercase;
    letter-spacing: 2px; font-weight: 500; color: var(--c-green);
    border-bottom: 1px solid var(--c-green); padding-bottom: 2px; margin-bottom: 1rem;
}
.section-title { font-size: 2.8rem; }

/* =========================================
   BUTTONS
========================================= */
.btn {
    display: inline-flex; align-items: center; font-family: var(--f-body);
    font-size: 0.85rem; font-weight: 500; text-transform: uppercase; letter-spacing: 2px;
    padding: 1rem 2.5rem; border-radius: var(--radius); cursor: pointer; transition: var(--t-base);
    border: 1px solid transparent;
}
.btn-solid-green { background: var(--c-green); color: var(--c-white); }
.btn-solid-green:hover { background: var(--c-green-hover); color: var(--c-white); }
.btn-solid-navy { background: var(--c-navy); color: var(--c-white); }
.btn-solid-navy:hover { background: #11151d; color: var(--c-white); }
.btn-outline { border-color: var(--c-navy); color: var(--c-navy); background: transparent; }
.btn-outline:hover { background: var(--c-navy); color: var(--c-white); }

/* =========================================
   HEADER & NAVIGATION
========================================= */
.header { position: fixed; top: 0; left: 0; width: 100%; padding: 2rem 0; z-index: 1000; transition: var(--t-base); background: transparent; }
.header.scrolled { padding: 1rem 0; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); box-shadow: 0 4px 10px rgba(0,0,0,0.03); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }

.logo { display: flex; gap: 0.5rem; align-items: center; font-family: var(--f-heading); }
.logo-icon { font-size: 1.5rem; color: var(--c-green); }
.logo-text { font-size: 1.4rem; font-weight: 600; letter-spacing: 2px; }

.nav-links { display: flex; align-items: center; gap: 2.5rem; }
.nav-item { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 2px; font-weight: 500; }
.nav-item:hover { color: var(--c-green); }

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

/* Mobile Menu */
.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 100%; max-width: 350px; height: 100vh;
    background: var(--c-beige); z-index: 1001; transition: var(--t-base);
    display: flex; align-items: center; justify-content: center; border-left: 1px solid var(--c-beige-dark);
}
.mobile-menu.active { right: 0; box-shadow: -10px 0 30px rgba(0,0,0,0.05); }
.mobile-menu-inner { display: flex; flex-direction: column; text-align: center; gap: 2rem; }
.close-mobile { position: absolute; top: 2rem; right: 2rem; border: none; background: none; font-size: 1.5rem; cursor: pointer; color: var(--c-navy); }
.mobile-nav-item { font-family: var(--f-heading); font-size: 1.3rem; text-transform: uppercase; letter-spacing: 3px; }
.mobile-nav-item:hover { color: var(--c-green); }

/* =========================================
   HERO
========================================= */
.hero { position: relative; padding-top: 10rem; overflow: hidden; }
.badge-subtle {
    display: inline-block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 3px;
    font-weight: 500; color: var(--c-navy); margin-bottom: 2rem;
}
.hero-title { font-size: clamp(3rem, 5vw, 4.5rem); margin-bottom: 1.5rem; line-height: 1.1; }
.hero-desc { font-size: 1.15rem; max-width: 650px; margin: 0 auto; color: var(--c-muted); }

.hero-meta { display: flex; align-items: center; justify-content: center; gap: 1.5rem; font-size: 0.95rem; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; }
.hero-meta .divider { width: 40px; height: 1px; background: #D1D5DB; }
.hero-meta i { margin-right: 0.5rem; }

.hero-visual { width: 100%; max-width: 1000px; margin: 0 auto; position: relative; }
.hero-img { width: 100%; height: 500px; object-fit: cover; filter: brightness(0.9); }

/* =========================================
   VISION
========================================= */
.vision-img img { width: 100%; height: auto; border-radius: 4px; box-shadow: var(--shadow-lg); }
.objective-list { border-top: 1px solid var(--c-beige-dark); padding-top: 2rem; }
.obj-item { display: flex; gap: 1.5rem; align-items: flex-start; margin-bottom: 1.5rem; }
.obj-icon { font-size: 1.5rem; color: var(--c-green); margin-top: 0.2rem; }

/* =========================================
   SESSIONS
========================================= */
.session-card { display: flex; gap: 3rem; align-items: center; border-bottom: 1px solid #E5E7EB; padding-bottom: 3rem; }
.session-card:last-child { border-bottom: none; padding-bottom: 0; }
.session-avatar { width: 200px; height: 250px; object-fit: cover; border-radius: 2px; filter: grayscale(20%); }

/* =========================================
   ITINERARY
========================================= */
.day-card { border: 1px solid rgba(244, 241, 234, 0.1); padding: 2rem; transition: var(--t-base); background: rgba(255,255,255,0.02); }
.day-card:hover { background: rgba(255,255,255,0.05); border-color: rgba(244, 241, 234, 0.3); }
.day-schedule li { margin-bottom: 1rem; font-size: 0.95rem; color: #D1D5DB; border-left: 2px solid var(--c-green); padding-left: 1rem; }
.day-schedule li strong { color: var(--c-white); font-weight: 500; font-family: var(--f-body); }

/* =========================================
   VENUE
========================================= */
.venue-gallery { display: grid; grid-template-columns: 2fr 1fr; gap: 1rem; }
.vg-large { width: 100%; height: 100%; object-fit: cover; }
.vg-small-grid { display: flex; flex-direction: column; gap: 1rem; }
.vg-small-grid img { width: 100%; height: 50%; object-fit: cover; }

/* =========================================
   RSVP
========================================= */
.form-group label { text-align: left; }
.form-control {
    width: 100%; padding: 1rem; border: none; border-bottom: 1px solid #D1D5DB;
    font-family: var(--f-body); color: var(--c-navy); background: transparent; transition: var(--t-base);
}
.form-control:focus { outline: none; border-bottom-color: var(--c-green); }
.form-control::placeholder { color: #9CA3AF; font-weight: 300; }
select.form-control { cursor: pointer; appearance: none; }

/* =========================================
   MEDIA QUERIES
========================================= */
@media (max-width: 991px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .grid-2-cols, .grid-3-cols, .venue-gallery { grid-template-columns: 1fr; }
    .vision-text { order: -1; margin-bottom: 2rem; }
    .hero-meta { flex-direction: column; gap: 1rem; }
    .hero-meta .divider { width: 1px; height: 30px; }
    .hero-img { height: 300px; }
    .session-card { flex-direction: column; text-align: center; gap: 1.5rem; }
}
@media (max-width: 576px) {
    .hero-title { font-size: 2.5rem; }
    .section-title { font-size: 2.2rem; }
    .p-5 { padding: 2rem !important; }
}