:root { --primary: #0052CC; --dark: #1E293B; --light: #F8FAFC; }
* { box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; margin: 0; background: var(--light); color: var(--dark); line-height: 1.6; }
.container { width: 90%; max-width: 1100px; margin: auto; }

/* Header & Nav */
header { background: #fff; padding: 20px 0; position: sticky; top: 0; box-shadow: 0 2px 10px rgba(0,0,0,0.05); z-index: 100; }
nav { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 700; }
.logo span { color: var(--primary); }
.nav-links { display: flex; list-style: none; gap: 20px; }
.nav-links a { text-decoration: none; color: var(--dark); font-weight: 600; }

/* Hero */
.hero { padding: 100px 0; background: linear-gradient(to right, #ffffff, #e9efff); text-align: center; }
.hero h1 { font-size: 3rem; margin-bottom: 10px; }
.accent { color: var(--primary); }
.hero-btns { margin-top: 30px; display: flex; justify-content: center; gap: 15px; }

/* Buttons */
.btn-primary { background: var(--primary); color: #fff; padding: 12px 25px; border-radius: 5px; text-decoration: none; border: none; cursor: pointer; }
.btn-whatsapp { background: #25D366; color: #fff; padding: 12px 25px; border-radius: 5px; text-decoration: none; }

/* Grid */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; padding: 50px 0; }
.card { background: #fff; padding: 30px; border-radius: 10px; text-align: center; border: 1px solid #eee; transition: 0.3s; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.card i { font-size: 2rem; color: var(--primary); margin-bottom: 15px; }

/* Contact Form */
.contact { background: #fff; padding: 80px 0; }
form { max-width: 600px; margin: auto; display: flex; flex-direction: column; gap: 15px; }
input, textarea { padding: 12px; border: 1px solid #ddd; border-radius: 5px; font-family: inherit; }

/* Chatbot UI */
#chatbot { position: fixed; bottom: 20px; right: 20px; z-index: 1000; }
#chat-toggle { background: var(--primary); color: #fff; width: 60px; height: 60px; border-radius: 50%; border: none; cursor: pointer; font-size: 1.5rem; }
#chat-window { width: 300px; background: #fff; border-radius: 10px; box-shadow: 0 5px 20px rgba(0,0,0,0.2); position: absolute; bottom: 70px; right: 0; overflow: hidden; }
.chat-header { background: var(--primary); color: #fff; padding: 15px; display: flex; justify-content: space-between; }
#chat-content { padding: 15px; }
.hidden { display: none; }