/* reset & base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.body1 {
  font-family: 'Roboto', sans-serif;
  background-color: #000;
  color: #fff;
  line-height: 1.6;
}

body {
  font-family: 'Roboto', sans-serif;
  background-color: #fff;
  color: #000;
  line-height: 1.6;
}
.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* header / nav */
.site-header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid #000; 
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
}
.logo img {
  height: 120px;
}
.site-nav a {
  color: #000;
  text-decoration: none;
  margin-left: 20px;
  font-weight: 600;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #000;
  font-size: 1.5rem;
}

/* Hero */
.hero {
  padding: 100px 0;
  text-align: center;
  background: radial-gradient(circle, #0a3d62 0%, #000 80%);
}
.hero h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.5rem;
  margin-bottom: 20px;
}
.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}
.btn {
  background: #3c6382;
  color: #fff;
  padding: 12px 25px;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover {
  background: #0a3d62;
}

/* Services grid */
.services .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}
.services .card {
  background: #0a3d62;
  padding: 25px;
  border-radius: 8px;
  text-align: center;
}
.services .card h3 {
  font-family: 'Poppins', sans-serif;
  margin-bottom: 15px;
}
.services .card p {
  font-size: 1rem;
}

/* About */
.about {
  padding: 60px 0;
  text-align: center;
}

/* Contact form */
.contact {
  padding: 60px 0;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.contact-form input,
.contact-form textarea {
  padding: 15px;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
}
.contact-form button {
  align-self: flex-start;
}

/* Footer */
.site-footer {
  background: #0a3d62;
  padding: 20px 0;
  text-align: center;
  font-size: 0.9rem;
}

/* Responsive nav */
@media (max-width: 768px) {
  .site-nav {
    display: none;
    flex-direction: column;
    background: #9facb5;
    position: absolute;
    top: 60px;
    right: 0;
    width: 200px;
    padding: 15px;
  }
  .site-nav.nav-open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
}

/* Chat Floating Button */
#ai-chat-button {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background-color: #0c3d62;
    color: #fff;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    font-size: 26px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: transform 0.2s ease-in-out;
    z-index: 1000;
}

#ai-chat-button:hover {
    transform: scale(1.08);
}

/* Chat Window */
#ai-chat-window {
    position: fixed;
    bottom: 95px;
    right: 25px;
    width: 320px;
    max-height: 430px;
    background: #ffffff;
    border-radius: 14px;
    box-shadow: 0 6px 25px rgba(0,0,0,0.35);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 1000;
}

#ai-chat-header {
    background: #0c3d62;
    color: #fff;
    text-align: center;
    font-weight: bold;
    padding: 10px;
}

#ai-chat-messages {
    padding: 10px;
    height: 280px;
    overflow-y: auto;
    font-size: 14px;
    color: #000;
}

/* Input area */
#ai-chat-input-area {
    display: flex;
    border-top: 1px solid #ddd;
    background: #f8f8f8;
}

#ai-chat-input {
    flex: 1;
    padding: 10px;
    border: none;
    outline: none;
}

#ai-chat-send {
    width: 45px;
    background: #0c3d62;
    color: white;
    border: none;
    cursor: pointer;
}