/* ======================================== */
/* 🌟 SMOOTH NEON TUBE TEXT FOR LOGO       */
/* ======================================== */
.logo span {
  font-size: 2.5rem; /* adjust size */
  font-weight: bold;
  font-family: "Poppins", sans-serif; /* smooth rounded font */
  color: #ffffff; /* solid inner blue */
  -webkit-text-stroke: 0.01px #010000; /* thinner white tube outline */
  /* slight blur for smooth edges */
  text-shadow: 
    0 0 0.2px #0c0000,
    0 0 0.2px #00010a;
}

/* ======================================== */
/* 🌐 GLOBAL RESET & BASE STYLES           */
/* ======================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', sans-serif; color: #fff; overflow-x: hidden; }


/* ======================================== */
/* 🧭 GLOBAL LAYOUT OFFSET (after fixed navbar) */
/* ======================================== */

/* Define the combined height of header + navbar */
body {
  --header-nav-height: 120px; /* adjust if nav wraps into 2 lines */
}

/* Push all content below the fixed header+nav automatically */
main, .page-content {
  margin-top: var(--header-nav-height);
  position: relative;
  z-index: 1;
}

/* Optional: extra space for mobile screens */
@media (max-width: 768px) {
  body {
    --header-nav-height: 30px;
  }
}





/* ======================================== */
/* 🎨 FULL RESPONSIVE BACKGROUND SYSTEM (NO LAG) */
/* ======================================== */

body::before {
  content: "";
  position: fixed;
  top: 0; 
  left: 0;
  width: 100%;
  height: 100%;
  background: url("/assets/images/bg-4k.webp") no-repeat center center fixed;
  background-size: cover;
  z-index: -2;
}

/* 🖥️ Large Desktop (Full HD 1920px) */
@media (max-width: 1920px) {
  body::before {
    background-image: url("/assets/images/bg-desktop.webp");
  }
}

/* 💻 Laptops / Medium Desktops (1440px) */
@media (max-width: 1440px) {
  body::before {
    background-image: url("/assets/images/bg-laptop.webp");
  }
}

/* 💻 Small Laptops / Large Tablets (1280px) */
@media (max-width: 1280px) {
  body::before {
    background-image: url("/assets/images/bg-tablet.webp");
  }
}

/* 📲 Tablets (1024px) */
@media (max-width: 1024px) {
  body::before {
    background-image: url("/assets/images/bg-tablet.webp");
  }
}

/* 📱 Large Phones (768px) */
@media (max-width: 768px) {
  body::before {
    background-image: url("/assets/images/bg-mobile.webp");
    background-attachment: scroll; /* removes mobile lag */
  }
}

/* 📱 Normal Phones (600px) */
@media (max-width: 600px) {
  body::before {
    background-image: url("/assets/images/bg-mobile.webp");
    background-attachment: scroll;
  }
}

/* 📱 Small Phones (480px) */
@media (max-width: 480px) {
  body::before {
    background-image: url("/assets/images/bg-mobile.webp");
    background-attachment: scroll;
  }
}





/* ======================================== */
/* 🏠 HEADER + NAVIGATION WRAPPER           */
/* ======================================== */
.header-nav-wrapper {
  position: fixed;  /* Ensure this is fixed */
  top: 0; 
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: transform 0.5s ease, opacity 0.5s ease;
}

header {
  width: 100%;
  height: 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  backdrop-filter: blur(100px);
  border: 3.5px solid rgba(255, 255, 255, 0.962);
  transition: transform 0.5s ease;
}

/* ======================================== */
/* 💡 LOGO + BRAND                          */
/* ======================================== */
header .logo {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 40px;
  font-weight: bold;
  color: white;
  cursor: pointer;
}

/* Continuous Neon Glow for Logo Image */
header .logo img {
  height: 80px;
  width: auto;
  border-radius: 0.1px;
  filter: drop-shadow(0 0 8px #00aaff) drop-shadow(0 0 12px #bde2f4);
  animation: neonGlow 3s infinite ease-in-out;
}

@keyframes neonGlow {
  0% {
    filter: drop-shadow(0 0 5px #00aaff)
            drop-shadow(0 0 10px #33ddff)
            drop-shadow(0 0 15px #bde2f4);
  }
  50% {
    filter: drop-shadow(0 0 10px #ffffff)
            drop-shadow(0 0 20px #f0f0f0)
            drop-shadow(0 0 30px #ffffff);
  }
  100% {
    filter: drop-shadow(0 0 5px #00aaff)
            drop-shadow(0 0 10px #33ddff)
            drop-shadow(0 0 15px #bde2f4);
  }
}







/* ======================================== */
/* 🔝 TOP NAVIGATION (FULL-WIDTH + SLIMMER) */
/* ======================================== */
.top-nav {
  width: 100%;
  display: flex;
  margin-top: 5px;
  justify-content: center;
  flex-wrap: wrap;
  gap: 3px; /* tighter gap between buttons */
  padding: 5px 120px; /* smaller padding */
  background: rgba(0, 0, 0, 0.25);
  border: 2px solid rgba(255,255,255,0.8);
  border-radius: 10px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  top: 0;
  z-index: 1001;
  transition: transform 0.4s ease, opacity 0.3s ease;
  box-sizing: border-box;

}


/* ======================================== */
/* 🌐 NAV LINKS (SMALLER 3D BUTTONS)        */
/* ======================================== */
.nav-link {
  margin: 0 6px; /* reduce side spacing */
  padding: 4px 16px; /* smaller button size */
  border-radius: 5px;
  border: 1.5px solid rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.08);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.7rem; /* reduced font size */
  font-weight: 600;
  letter-spacing: 0.2px;
  display: inline-block;
  backdrop-filter: blur(2px);
  box-shadow:
    0 4px 0 rgba(0, 200, 255, 0.5),
    0 6px 12px rgba(0, 200, 255, 0.2);
  transition: all 0.25s ease;
}

/* Hover Effect */
.nav-link:hover {
  background: linear-gradient(145deg, rgba(0, 200, 255, 0.8), rgba(0, 255, 255, 0.6));
  color: #111;
  transform: translateY(-2px);
  box-shadow:
    0 6px 0 rgba(0, 150, 255, 0.7),
    0 10px 20px rgba(0, 200, 255, 0.5);
}

/* Active Page Link */
.nav-link.active {
  background: linear-gradient(145deg, #00eaff, #0099cc);
  color: #111;
  box-shadow:
    0 5px 0 #007b99,
    0 8px 18px rgba(0, 200, 255, 0.6);
  transform: translateY(-1px);
}

/* Pressed Effect */
.nav-link:active {
  transform: translateY(2px);
  box-shadow:
    0 2px 0 #007b99,
    0 5px 10px rgba(0, 200, 255, 0.4);
}

/* Home button */
.nav-link.home-btn {
  cursor: default;
}
.nav-link.home-btn:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  transform: none;
  box-shadow: none;
}



/* ======================================== */
/* ⬇ 3D DROPDOWN MENU (SOLID BACKGROUND BELOW BUTTON) */
/* ======================================== */
.dropdown {
  position: relative;
  display: inline-block;
}

/* 🔹 Dropdown container */
.dropdown-content {
  display: block;
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: 115%; /* appears just below the button */
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: linear-gradient(145deg, #e0f7ff, #b3ecff); /* solid smooth gradient */
  border: 2px solid rgba(0, 200, 255, 0.9);
  border-radius: 14px;
  min-width: 240px;
  box-shadow:
    0 8px 25px rgba(0, 255, 255, 0.4),
    inset 0 0 10px rgba(255, 255, 255, 0.2);
  z-index: 2000;
  transition: all 0.3s ease;
  padding: 8px 0;
  perspective: 800px; /* enables 3D depth */
}

/* ✨ Show dropdown with 3D pop effect */
.dropdown:hover .dropdown-content,
.dropdown-content:hover {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) rotateX(0deg);
}

/* 🔸 Dropdown link items */
.dropdown-content a {
  display: block;
  padding: 10px 16px;
  margin: 4px 10px;
  font-size: 13px;
  color: #000; /* darker text for solid background */
  text-decoration: none;
  background: linear-gradient(145deg, #ffffff, #dff8ff);
  border: 1px solid rgba(0, 180, 255, 0.3);
  border-radius: 10px;
  box-shadow:
    0 4px 0 rgba(0, 200, 255, 0.4),
    0 6px 10px rgba(0, 200, 255, 0.3);
  transition: all 0.25s ease;
  transform: translateZ(0);
}

/* 🟢 Hover = Neon Lift */
.dropdown-content a:hover {
  background: linear-gradient(145deg, #00eaff, #00bfff);
  color: #111;
  transform: translateY(-2px) translateZ(5px);
  box-shadow:
    0 6px 0 rgba(0, 150, 255, 0.8),
    0 12px 20px rgba(0, 200, 255, 0.5);
}





/* ======================================== */
/* 🦶 FOOTER                                  */
/* ======================================== */

html, body { width: 100%; overflow-x: hidden; }



footer {
  width: calc(100% - 10px);
  margin: 100px auto 5px auto;
  padding: 30px 20px;
  text-align: center;
  background: rgba(0,0,0,0.3);
  border-radius: 15.5px;
  border-top: 1.5px solid rgba(255,255,255,0.962);
  border-bottom: 1.5px solid rgba(255,255,255,0.962);
  box-sizing: border-box;
  overflow-x: hidden;
}


/* Service Links in Footer */
.service-link {
  display: inline-block;
  margin-top: 15px;
  padding: 10px 18px;
  border: 1.5px solid rgba(255,255,255,0.6);
  border-radius: 12px;
  background: rgba(255,255,255,0.1);
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s;
}

.service-link:hover {
  background: rgba(255,255,255,0.25);
}

/* -------------------------- */
/* Responsive Styles / Media Queries */
/* -------------------------- */
@media (max-width: 1024px) {
  .welcome-section,
  .achievements-section,
  .future-projects {
    margin-left: 0;
    padding: 40px 20px;
  }
}

@media (max-width: 768px) {
  .welcome-card {
    padding: 30px 20px;
    font-size: 0.95rem;
  }

  .card-grid, .footer-main {
    grid-template-columns: 1fr; /* single column */
    gap: 20px;
  }

  .sidebar-container {
    display: none; /* hide sidebar on mobile */
  }

  .future-projects .fp-card {
    padding: 25px 20px;
  }

  .welcome-section h1, .welcome-section h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .welcome-card {
    padding: 20px 15px;
  }

  .welcome-section h1 {
    font-size: 1.4rem;
  }

  .welcome-section h2 {
    font-size: 1.2rem;
  }

  .sub-card h4 {
    font-size: 1rem;
  }
}
/* --- Neon Glow Hover for Footer Links --- */
  footer a {
      color: white;
      text-decoration: none;
      transition: 0.3s;
    }

  footer a:hover {
      color: #00ccff;
      text-shadow: 0 0 6px #00ccff, 0 0 12px #00eaff;
    }


    
.card-btn {
  display: inline-block;
  margin-top: 28px;
  padding: 14px 34px;
  font-size: 1.05rem;
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid #00eaff;
  border-radius: 40px;
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(15px);
  box-shadow: 0 0 15px rgba(0, 234, 255, 0.4), inset 0 0 10px rgba(0, 234, 255, 0.2);
  transition: all 0.3s ease;
  cursor: pointer;
}

.card-btn:hover {
  color: #000000;
  background: #00eaff;
  box-shadow: 0 0 25px rgba(0, 234, 255, 0.8), 0 0 50px rgba(0, 234, 255, 0.5);
  transform: translateY(-4px) scale(1.05);
}

.card-btn:active {
  transform: translateY(0px) scale(0.98);
  box-shadow: 0 0 15px rgba(0, 234, 255, 0.5);
}