:root {
  --primary: #1e3a8a;
  --primarydark: #172554;
  --accent: #facc15;
  --textdark: #1f2937;
  --white: #ffffff;
  --bglight: #f8fafc;
  --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  --shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
}

body {
  background-color: var(--bglight);
  color: var(--textdark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- Navbar Base --- */
.nvbheader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--white);
  display: flex;
  align-items: center;
  z-index: 1000;
  transition: var(--transition);
}

.nvbheaderscrolled {
  box-shadow: var(--shadow);
  height: 70px;
}

.nvbcontainer {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* --- Logo --- */
.nvblogo {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
}

.nvblogo img {
  height: 60px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* Brand Text */
.nvbbrandtext {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.1;
}

/* First Line (Main Brand) */
.nvblineone {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}

/* Second Line (Supporting Name) */
.nvblinetwo {
  font-size: 12px;
  font-weight: 600;
  color: var(--textdark);
  letter-spacing: 1.2px;
}

.nvbschoolname {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  line-height: 1.1;
}

/* --- Desktop Nav --- */
.nvbnav {
  display: none;
}

.nvblist {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nvblink {
  text-decoration: none;
  color: var(--textdark);
  font-weight: 500;
  font-size: 0.9rem;
  position: relative;
  transition: var(--transition);
}

.nvblink:hover {
  color: var(--primary);
}

.nvblink::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nvblink:hover::after {
  width: 100%;
}

/* --- Buttons --- */
.nvbbtn {
  padding: 12px 24px;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-block;
}

.nvbbtnprimary {
  background: var(--primary);
  color: var(--white);
}

.nvbbtnprimary:hover {
  background: var(--primarydark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.2);
}

.nvbright {
  display: flex;
  align-items: center;
  gap: 15px;
}

/* --- Hamburger Trigger --- */
.nvbhamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
}

.nvbbar {
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 10px;
  transition: var(--transition);
}

/* --- Mobile Overlay --- */
.nvbmobilemenu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  transform: translateX(100%);
  transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.nvbmobilemenuactive {
  transform: translateX(0);
}

/* Close Icon inside Mobile Menu */
.nvbcloseicon {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 2001;
}

.nvbcrossbar {
  width: 28px;
  height: 2px;
  background: var(--white);
  border-radius: 10px;
  position: absolute;
  transition: var(--transition);
}

.nvbcrossbar1 {
  transform: rotate(45deg);
}
.nvbcrossbar2 {
  transform: rotate(-45deg);
}

.nvbmobilelist {
  list-style: none;
  text-align: center;
  width: 100%;
}

.nvbmobileitem {
  margin: 20px 0;
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.4s ease;
}

.nvbmobilemenuactive .nvbmobileitem {
  opacity: 1;
  transform: translateX(0);
}

.nvbmobilelink {
  text-decoration: none;
  color: var(--white);
  font-size: 1.8rem;
  font-weight: 700;
  transition: var(--transition);
  display: block;
}

.nvbmobileloginbtn {
  margin-top: 20px;
  background: var(--accent);
  color: var(--primarydark);
  width: 80%;
  max-width: 280px;
}

/* --- Admin Login Modal --- */
.nvbmodalwrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  backdrop-filter: blur(8px);
  padding: 20px;
}

.nvbmodal {
  background: var(--white);
  width: 100%;
  max-width: 400px;
  padding: 40px 30px;
  border-radius: 20px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.nvbmodalclose {
  position: absolute;
  top: 15px;
  right: 15px;
  background: #f1f5f9;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nvbinput {
  width: 100%;
  padding: 14px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  margin-top: 8px;
  outline: none;
}

/* --- Desktop Responsive --- */
.nvbdesktoplogin {
  display: none; /* Mobile first: hide */
}

@media (min-width: 1024px) {
  .nvbnav {
    display: block;
  }
  .nvbhamburger {
    display: none;
  }
  .nvbdesktoplogin {
    display: inline-block;
  }
  .nvblogo {
    width: 140px;
    height: 44px;
  }
  .nvbmobilemenu {
    display: none;
  }
  .nvbcontainer {
    padding: 0 40px;
  }
}

.nvbmaincontent {
  padding: 140px 20px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.nvbadminbadge {
  display: none;
  background: var(--accent);
  color: var(--primarydark);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.6rem;
  font-weight: 900;
  position: absolute;
  top: -10px;
  right: -20px;
}

.nvbadminmode .nvbadminbadge {
  display: block;
}
.nvbadminmode .nvbheader {
  border-bottom: 4px solid var(--accent);
}