:root {
    --primary: #10b981;
    --dark: #0f172a;
    --gray: #64748b;
    --light: #f8fafc;
    --white: #ffffff;
}

* { margin: 0; padding: 0; box-box: border-box; font-family: 'Inter', sans-serif; }
body { background-color: var(--white); color: var(--dark); overflow-x: hidden; }

.navbar { display: flex; justify-content: space-between; align-items: center; padding: 20px 80px; max-width: 1200px; margin: 0 auto; }
.logo { font-size: 24px; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 10px; }
.nav-links { display: flex; list-style: none; gap: 30px; }
.nav-links a { text-decoration: none; color: var(--dark); font-weight: 500; transition: 0.3s; }
.nav-links a:hover { color: var(--primary); }

.btn-primary { background: var(--primary); color: white; padding: 10px 25px; border-radius: 50px; text-decoration: none; font-weight: 600; }
.btn-dark { background: var(--dark); color: white; padding: 15px 30px; border-radius: 12px; text-decoration: none; font-weight: 700; }
.btn-outline { border: 1px solid #e2e8f0; padding: 15px 30px; border-radius: 12px; text-decoration: none; font-weight: 700; color: var(--dark); }

.hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; padding: 80px; max-width: 1200px; margin: 0 auto; gap: 50px; }
.badge { color: var(--primary); font-weight: 700; text-transform: uppercase; font-size: 12px; letter-spacing: 2px; }
.hero h1 { font-size: 56px; line-height: 1.1; margin: 20px 0; font-weight: 900; }
.text-green { color: var(--primary); }
.hero p { color: var(--gray); font-size: 18px; line-height: 1.6; margin-bottom: 30px; }
.hero-btns { display: flex; gap: 15px; margin-bottom: 20px; }

.chat-container { background: var(--light); padding: 30px; border-radius: 30px; border: 1px solid #f1f5f9; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.05); }
.message { padding: 12px 18px; border-radius: 20px; margin-bottom: 15px; max-width: 80%; font-size: 14px; }
.user { background: var(--primary); color: white; margin-left: auto; border-bottom-right-radius: 2px; }
.bot { background: white; border: 1px solid #f1f5f9; border-bottom-left-radius: 2px; box-shadow: 0 2px 4px rgba(0,0,0,0.02); }
.bot strong { display: block; margin-bottom: 5px; }
.txt-res { color: var(--primary); display: block; font-weight: 600; }
.txt-sub { color: var(--gray); font-size: 12px; }

.features { padding: 100px 80px; background: var(--light); text-align: center; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 50px; }
.card { background: white; padding: 40px 20px; border-radius: 20px; border: 1px solid #f1f5f9; text-align: left; transition: 0.3s; }
.card:hover { transform: translateY(-10px); }
.card i { color: var(--primary); margin-bottom: 20px; }

.footer { padding: 40px; text-align: center; color: var(--gray); font-size: 14px; border-top: 1px solid #f1f5f9; }