/* --- Global Reset & Flex Layout --- */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; width: 100%; min-height: 100vh;
  display: flex; flex-direction: column;
  font-family: 'Segoe UI', Arial, sans-serif;
  background-color: #000; color: #fff; overflow-x: hidden;
}

/* --- Hero Section (Strictly 60% Height) --- */
#hero {
  flex: 0 0 60vh; width: 100%; position: relative;
  display: flex; justify-content: center; overflow: hidden;
}
#hero::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: url('warehouse.jpg') center/cover no-repeat;
  filter: brightness(.7) contrast(1.1); z-index: 1;
}

/* Logo: Centered and Always Visible */
#logo-link {
  position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 100; display: block; width: 80%; max-width: 300px;
}
#logo {
  width: 100%; height: auto;
  filter: brightness(1.8) saturate(1.3) drop-shadow(0px 4px 12px rgba(0,0,0,0.5));
  cursor: pointer;
}

/* Tagline: Only shows on Homepage (body.home-page) */
#hero h1 {
  display: none; position: absolute; top: 66%; left: 50%;
  transform: translate(-50%, -50%); z-index: 15; width: 100%;
  font-size: clamp(20px, 4.5vw, 52px); color: #0B1F3F;
  text-transform: uppercase; text-align: center; font-weight: 700;
  text-shadow: 1px 1px 4px rgba(255,255,255,0.8); white-space: nowrap;
}
.home-page #hero h1 { display: block; }

/* --- Content & Navigation (Gray Area) --- */
#bottom-section, .scrollable-content {
  flex-grow: 1; width: 100%; background-color: #2a2a2a;
  display: flex; flex-direction: column; align-items: center;
  padding: 60px 20px; position: relative; z-index: 10;
}
ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.nav-link { color: #ffffff; text-decoration: none; font-weight: 600; font-size: clamp(18px, 4vw, 26px); transition: 0.3s; }
.nav-link:hover { color: #00BFFF; }

/* --- Boxes --- */
.message-box, .contact-container {
  background-color: #0B1F3F; color: #ffffff; padding: 40px; border-radius: 12px;
  max-width: 850px; width: 90%; margin-bottom: 40px; text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6); line-height: 1.8;
}
.message-box h2 { color: #00BFFF; text-transform: uppercase; margin-top: 0; }

/* --- WhatsApp Button --- */
#whatsapp-button {
  position: fixed; bottom: 30px; right: 30px; z-index: 9999;
  background-color: #25D366; color: white; padding: 12px 24px;
  border-radius: 50px; font-weight: bold; text-decoration: none;
  display: flex; align-items: center; gap: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}