/* Base Variables */
:root {
    --primary-color: #021220;
    --primary-light: #062a4d;
    --text-light: #ffffff;
    --text-dark: #1f2937;
    --text-muted: #6b7280;
    --accent-color: #00e676; /* Vivid green */
    --accent-hover: #00c853;
    --bg-light: #f9fafb;
    --card-bg: #ffffff;
    --font-main: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Reset & Global */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-main); scroll-behavior: smooth; }

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

h1, h2, h3, h4 { color: var(--primary-color); font-weight: 800; }
a { text-decoration: none; color: inherit; }

/* Variables Classes */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.btn-primary { background-color: var(--accent-color); color: var(--primary-color); border: 2px solid var(--accent-color); }
.btn-primary:hover { background-color: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,230,118,0.3); }

.btn-outline { background-color: transparent; color: var(--text-light); border: 2px solid var(--text-light); }
.btn-outline:hover { background-color: var(--text-light); color: var(--primary-color); }

.btn-outline-light { background-color: transparent; color: var(--text-light); border: 2px solid rgba(255,255,255,0.3); }
.btn-outline-light:hover { border-color: var(--text-light); transform: translateY(-2px); }

.btn-large { padding: 1rem 2.5rem; font-size: 1.125rem; }

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    background-color: rgba(2, 18, 32, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo-container { display: flex; align-items: center; z-index: 1002; }
.logo { height: 110px; object-fit: contain; }

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a { color: #d1d5db; font-weight: 500; font-size: 0.95rem; }
.nav-links a:not(.btn):hover, .nav-links a.active { color: var(--text-light); }
.nav-links a.btn-primary { color: var(--primary-color) !important; font-weight: 700; background-color: var(--accent-color); }
.nav-links a.btn-outline { color: var(--accent-color) !important; }
.nav-links a.btn-outline:hover { color: var(--primary-color) !important; }

/* Hamburger Menu (Mobile) */
.hamburger { display: none; cursor: pointer; z-index: 1001; }
.hamburger .bar { display: block; width: 25px; height: 3px; margin: 5px auto; transition: all 0.3s ease; background-color: var(--text-light); }

/* Hero Section */
.hero {
    background: radial-gradient(circle at 50% 150%, var(--primary-light) 0%, var(--primary-color) 70%);
    color: var(--text-light);
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    z-index: 10;
}

.hero h1 { font-size: 4.5rem; color: var(--text-light); line-height: 1.1; margin-bottom: 1.5rem; letter-spacing: -1px; animation: slideUp 0.8s ease-out; }
.hero p { font-size: 1.25rem; color: #9ca3af; margin-bottom: 2.5rem; font-weight: 300; animation: slideUp 1s ease-out; }

.hero-buttons { display: flex; gap: 1rem; justify-content: center; animation: slideUp 1.2s ease-out; flex-wrap: wrap; }

/* General Sections */
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 3rem; }

/* Features */
.features-section { padding: 6rem 5%; background-color: var(--bg-light); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; max-width: 1200px; margin: 0 auto; }
.feature-card { background: var(--card-bg); padding: 2.5rem; border-radius: 16px; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid #e5e7eb; }
.feature-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-md); border-color: rgba(0,230,118,0.3); }
.feature-card .icon { font-size: 3rem; margin-bottom: 1.5rem; display: inline-block; padding: 1rem; background: #f0fdf4; border-radius: 12px; }
.feature-card h3 { font-size: 1.5rem; margin-bottom: 1rem; color: var(--primary-color); }
.feature-card p { color: var(--text-muted); }

/* Testimonials */
.testimonials-section { padding: 6rem 5%; background-color: #ffffff; }
.testimonials-container { display: flex; justify-content: center; align-items: center; max-width: 800px; margin: 0 auto; text-align: center; }
.testimonial p { font-size: 1.5rem; font-style: italic; color: var(--text-dark); margin-bottom: 1.5rem; }
.testimonial h4 { color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

/* Forms & Registration */
.register-section { padding: 6rem 5%; background-color: var(--bg-light); text-align: center; border-top: 1px solid #e5e7eb; }
.register-form-container { max-width: 500px; margin: 0 auto; background: var(--card-bg); padding: 3rem; border-radius: 16px; box-shadow: var(--shadow-sm); text-align: left; border: 1px solid #e5e7eb; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-dark); }
.form-control { width: 100%; padding: 0.9rem 1rem; border: 1px solid #d1d5db; border-radius: 8px; font-size: 1rem; transition: var(--transition); background-color: #f9fafb; }
.form-control:focus { outline: none; border-color: var(--accent-color); box-shadow: 0 0 0 3px rgba(0,230,118,0.2); background-color: #ffffff; }

/* Footer */
.footer { background-color: var(--primary-color); color: var(--text-light); padding: 4rem 5% 2rem; border-top: 4px solid var(--accent-color); }
.footer-content { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 3rem; max-width: 1200px; margin: 0 auto; }
.footer-col { flex: 1; min-width: 250px; }
.footer-logo { height: 65px; margin-bottom: 1rem; }
.footer-col h4 { color: var(--text-light); margin-bottom: 1.5rem; font-size: 1.2rem; position: relative; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: -8px; width: 40px; height: 2px; background: var(--accent-color); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.8rem; }
.footer-links a { color: #9ca3af; transition: var(--transition); }
.footer-links a:hover { color: var(--accent-color); padding-left: 5px; }
.footer-bottom { text-align: center; padding-top: 2rem; margin-top: 3rem; border-top: 1px solid rgba(255,255,255,0.1); color: #6b7280; font-size: 0.9rem; }

@keyframes slideUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 900px) {
    .hamburger { display: block; }
    .nav-links {
        position: fixed; left: -100%; top: 0; flex-direction: column; background: var(--primary-color);
        width: 100%; height: 100vh; justify-content: center; align-items: center; transition: 0.4s;
    }
    .nav-links.active { left: 0; }
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    .hero h1 { font-size: 3rem; }
}

@media (max-width: 600px) {
    .hero h1 { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; }
    .btn-large { width: 100%; }
}