/* --- Base Variables & Theme --- */
:root {
    /* Light Theme (Default) */
    --bg-primary: #fdfbf7;
    --bg-secondary: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --primary-green: #14532d; /* Deep Forest Green */
    --primary-green-hover: #166534;
    --accent-gold: #d4af37; /* Classic Gold */
    --accent-gold-hover: #e5c158;
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    --nav-bg: rgba(253, 251, 247, 0.85);
}

[data-theme="dark"] {
    /* Dark Theme */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --primary-green: #22c55e;
    --primary-green-hover: #16a34a;
    --accent-gold: #fbbf24;
    --accent-gold-hover: #f59e0b;
    --border-color: #334155;
    --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(15, 23, 42, 0.85);
}

/* --- Global Reset & Typography --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* --- Layout & Utility Classes --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.text-center { text-align: center; }
.max-w-md { max-width: 600px; margin-left: auto; margin-right: auto; }
.section { padding: 80px 0; }
.section-title { font-size: 2.2rem; margin-bottom: 20px; color: var(--primary-green); }
.pattern-bg {
    background-image: radial-gradient(var(--accent-gold) 0.5px, transparent 0.5px);
    background-size: 30px 30px;
    background-position: 0 0;
    /* Very subtle opacity */
    background-color: var(--bg-primary);
    box-shadow: inset 0 0 100px 100px var(--bg-primary);
}

/* --- Top Badge & Header --- */
.top-badge {
    background: linear-gradient(90deg, var(--primary-green), #0f3f22);
    color: #ffffff;
    text-align: center;
    padding: 10px 20px;
    font-size: 0.9rem;
}
.top-badge strong { color: var(--accent-gold); }

.main-header {
    position: sticky;
    top: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
}
.logo span { color: var(--accent-gold); }

.desktop-nav a {
    margin: 0 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}
.desktop-nav a:hover { color: var(--primary-green); }

.nav-actions { display: flex; align-items: center; gap: 15px; }
#theme-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-primary);
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
    background: var(--primary-green);
    color: #ffffff !important;
}
.btn-primary:hover { background: var(--primary-green-hover); box-shadow: 0 4px 12px rgba(20, 83, 45, 0.3); }
.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary-green);
    color: var(--primary-green);
}
.btn-secondary:hover { background: rgba(20, 83, 45, 0.05); }
.btn-large { padding: 15px 30px; font-size: 1.1rem; }
.btn-full { width: 100%; }

/* --- Hero Section --- */
.hero { padding: 100px 0 80px; }
.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
}
.hero-buttons { display: flex; justify-content: center; gap: 20px; }

/* --- Cards & Sections --- */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--card-shadow);
}
.card-hover { transition: transform 0.3s; }
.card-hover:hover { transform: translateY(-5px); }

/* --- Features List --- */
.feature-list { text-align: left; margin-top: 30px; }
.feature-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-weight: 500;
}
.feature-list li.faded { color: var(--text-secondary); font-style: italic; border: none; }

/* --- Forms --- */
.input-group { margin-bottom: 20px; text-align: left; }
.input-group label { display: block; margin-bottom: 8px; font-weight: 500; }
.input-group input {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}
.input-group input:focus { outline: none; border-color: var(--primary-green); box-shadow: 0 0 0 3px rgba(20, 83, 45, 0.1); }

.form-message { margin-top: 15px; font-weight: 500; }
.form-message.error { color: #dc2626; }

/* --- Referral UI --- */
.success-text { color: var(--primary-green); margin-bottom: 10px; }
.divider { border: 0; height: 1px; background: var(--border-color); margin: 30px 0; }
.referral-box {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}
.referral-box input {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    border: 1px dashed var(--accent-gold);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: monospace;
}

/* --- FAQ & Footer --- */
.accordion-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    padding: 20px;
}
.accordion-item h4 { margin-bottom: 10px; color: var(--primary-green); }

.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 20px;
}
.footer-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; margin-bottom: 40px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a:hover { color: var(--primary-green); }
.copyright { text-align: center; color: var(--text-secondary); border-top: 1px solid var(--border-color); padding-top: 20px; }

/* --- Animations --- */
.fade-in { opacity: 0; animation: fadeIn 0.8s ease forwards; }
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
@keyframes fadeIn { to { opacity: 1; transform: translateY(0); } from { opacity: 0; transform: translateY(20px); } }

/* --- Responsive --- */
@media (max-width: 768px) {
    .desktop-nav { display: none; }
    .hero-title { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; }
    .footer-grid { flex-direction: column; text-align: center; }
}