:root {
    --primary-emerald: #065f46;
    --primary-light: #10b981;
    --cream-bg: #fffcf5;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--cream-bg);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    background-color: var(--primary-emerald);
    color: var(--white);
    padding: 3rem 1rem;
    text-align: center;
    border-bottom: 5px solid var(--primary-light);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.lang-switcher {
    margin-top: 1rem;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid var(--white);
    color: var(--white);
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 20px;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.lang-btn.active {
    background: var(--white);
    color: var(--primary-emerald);
}

nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1.5rem;
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav a {
    text-decoration: none;
    color: var(--primary-emerald);
    font-weight: 600;
    transition: color 0.3s;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
}

nav a:hover {
    color: var(--primary-light);
}

nav a.active {
    color: var(--primary-emerald);
    border-bottom: 2px solid var(--primary-emerald);
}

/* Home/Hero Styles */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(135deg, var(--white) 0%, var(--cream-bg) 100%);
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid #e5e7eb;
}

.hero h2 {
    border: none;
    padding: 0;
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.download-btn {
    display: inline-block;
    background-color: var(--primary-emerald);
    color: var(--white);
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(6, 95, 70, 0.3);
    transition: transform 0.3s;
}

.download-btn:hover {
    transform: translateY(-3px);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    border-top: 4px solid var(--primary-emerald);
}

.feature-card h3 {
    color: var(--primary-emerald);
    margin-bottom: 0.5rem;
}

main {
    padding: 2rem 0;
}

.content-box {
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-top: 2rem;
}

h2 {
    color: var(--primary-emerald);
    margin: 2rem 0 1rem;
    border-left: 4px solid var(--primary-light);
    padding-left: 1rem;
}

h3 {
    margin: 1.5rem 0 1rem;
}

p, ul {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

ul {
    padding-left: 1.5rem;
}

.section-content {
    display: none;
}

.section-content.active {
    display: block;
}

footer {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.card {
    background: var(--cream-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    margin: 1.5rem 0;
}

@media (max-width: 600px) {
    header h1 { font-size: 1.8rem; }
    .content-box { padding: 1.5rem; }
    nav { gap: 1rem; font-size: 0.9rem; }
}