:root {
    /* Color Palette */
    --primary-green: #2ecc71;
    --primary-green-dark: #27ae60;
    --primary-green-light: #e8f8f5;
    --text-main: #2c3e50;
    --text-muted: #7f8c8d;
    --bg-white: #ffffff;
    --bg-light: #f9f9f9;
    --bg-dark: #1a1a1a;
    --divider: #ecf0f1;
    --white: #ffffff;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-width: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-main);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Typography Utilities */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.text-center { text-align: center; }

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: var(--font-main);
}

.btn-primary {
    background-color: var(--primary-green);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--primary-green);
    color: var(--white);
}

/* Navbar Style */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    padding: 10px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 45px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary-green);
}

/* Header Branding */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--primary-green);
}

/* Section Common */
section {
    padding: var(--section-padding);
}

.section-tag {
    color: var(--primary-green);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
    font-size: 14px;
    margin-bottom: 10px;
    display: block;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 50px;
}