:root {
    --bg-dark: #1e222a;
    --bg-light: #f8fafc;
    --bg-card: #ffffff;
    --accent: #4ade80;
    --text-main: #0f172a;
    --text-muted: #475569;
    --header-footer-bg: #1e222a;
}

body { font-family: 'Inter', 'Segoe UI', sans-serif; background-color: var(--bg-light); color: var(--text-main); margin: 0; line-height: 1.6; }

header { position: sticky; top: 0; z-index: 1000; background-color: var(--header-footer-bg); border-bottom: 1px solid #333842; }
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1.5rem 10%; background: rgba(30, 34, 42, 0.95); }
.logo-text { font-weight: bold; font-size: 1.6rem; color: #f3f4f6; text-decoration: none; }
.highlight { color: var(--accent); }
.menu a { color: #f3f4f6; text-decoration: none; margin-left: 2rem; font-weight: 500; transition: color 0.2s ease; }
.menu a:hover { color: var(--accent); }

.hero { padding: 8rem 10%; text-align: center; background: linear-gradient(135deg, #f8fafc, #edf2f7); }
.hero h1 { font-size: 3.5rem; margin-bottom: 1rem; color: var(--text-main); letter-spacing: -0.02em; }
.hero p { font-size: 1.3rem; color: var(--text-muted); max-width: 700px; margin: 0 auto 2rem; }

.container { padding: 4rem 10%; max-width: 1200px; margin: 0 auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.card { background: var(--bg-card); padding: 2.2rem; border-radius: 10px; border-top: 4px solid var(--accent); border-left: 1px solid #e2e8f0; border-right: 1px solid #e2e8f0; border-bottom: 1px solid #e2e8f0; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.03), 0 4px 6px -4px rgba(0,0,0,0.03); color: var(--text-main); transition: transform 0.2s ease, box-shadow 0.2s ease; }
.card:hover { transform: translateY(-3px); box-shadow: 0 20px 25px -5px rgba(0,0,0,0.05), 0 8px 10px -6px rgba(0,0,0,0.05); }
.card p { color: var(--text-muted); }
.card h3 { color: var(--text-main); }

.contact-form { display: flex; flex-direction: column; gap: 1rem; max-width: 500px; margin: 0 auto; background: var(--bg-card); padding: 2.5rem; border-radius: 12px; border: 1px solid #e2e8f0; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.03); }
.contact-form input, .contact-form textarea { padding: 1rem; border-radius: 6px; border: 1px solid #cbd5e1; background: #f8fafc; color: var(--text-main); font-family: inherit; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); background: #ffffff; }
.btn { background: var(--accent); color: #111318; padding: 1rem 2rem; border-radius: 6px; text-decoration: none; font-weight: bold; border: none; cursor: pointer; text-align: center; transition: opacity 0.2s ease; }
.btn:hover { opacity: 0.9; }

footer { background: var(--header-footer-bg); text-align: center; padding: 2.5rem 2rem; color: #ffffff; border-top: 1px solid #333842; }