* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* Video */
.bg-video {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  z-index: -1;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 80px 20px;
}

/* HERO */
.hero {
  height: 100vh;
  color: white;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero h1 { font-size: 3.5rem; }
.hero p { margin: 15px 0 30px; }

.btn {
  padding: 14px 35px;
  background: white;
  color: black;
  border-radius: 30px;
  text-decoration: none;
}

/* SECTIONS */
.services, .about {
  background: #0e0e0e;
  color: white;
}

.projects {
  background: #f5f5f5;
}

.service-grid, .project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 30px;
}

.project img {
  width: 100%;
  border-radius: 10px;
}

/* FOOTER */
footer {
  background: black;
  color: white;
  text-align: center;
  padding: 20px;
}

/* CHAT */
#chat-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 55px;
  height: 55px;
  background: #00f5ff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 9999;
}

/* ============================= */
/* SCROLL BOTTOM CHAT POPUP */
/* ============================= */

#chat-popup {
  position: fixed;
  left: 50%;
  bottom: -400px;
  transform: translateX(-50%);
  width: 320px;
  background: #111;
  padding: 15px;
  border-radius: 12px 12px 0 0;
  color: white;
  box-shadow: 0 -10px 30px rgba(0,0,0,0.9);
  transition: bottom 0.4s ease;
  z-index: 9999;
}

#chat-popup.active {
  bottom: 0;
}

.chat-header {
  text-align: center;
  font-weight: bold;
  background: #00f5ff;
  color: black;
  padding: 8px;
  border-radius: 10px 10px 0 0;
  margin: -15px -15px 10px -15px;
}