/* navbarlanding.css
   Full CSS for FitMetrics navbar:
   - Slide-up on scroll (only transform)
   - Hamburger fixed on mobile
   - Login/Register beside hamburger on <=1024px
   - Mobile overlay nav
*/

/* ========== VARIABLES ========== */
:root {
  --primary-green: #4caf50;
  --primary-green-2: #6de95d;
  --bg: rgb(109, 231, 93);
  --text-dark: rgb(53, 40, 40);
  --nav-h: 72px; /* adjust if needed */
  --nav-padding-x: 2rem;
  --transition-transform: 320ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

/* Reset small */
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto,
    sans-serif;
}

/* Header wrapper */
header {
  position: relative;
  width: 100%;
  z-index: 1200;
}

/* ========== NAVBAR (only transform transitions — NO opacity transition) ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 calc(var(--nav-padding-x));
  background: var(--bg);
  color: var(--text-dark);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transform: translateY(0);
  transition: transform var(--transition-transform);
  will-change: transform;
}

/* Navbar always visible - no hide/show transition needed */

/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
}
.logo-link img {
  height: 36px;
  width: auto;
  display: block;
}

/* Main nav (desktop) */
.nav {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  margin-left: 2rem;
}
.nav li {
  margin: 0;
  padding: 0;
  position: relative;
}
.nav a {
  display: block;
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 600;
  padding: 0.5rem 0;
  position: relative;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: #fff;
  transition: width 260ms cubic-bezier(0.23, 1, 0.32, 1);
}
.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}
.nav a:hover,
.nav a.active {
  color: #fff;
}

/* Nav button group (login / register) - desktop default */
.nav-button {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-button .username {
  font-weight: 700;
  color: rgb(4, 30, 5);
  margin-right: 4px;
}

/* Button styles */
.nav-button a {
  text-decoration: none;
  font-weight: 700;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  background: rgba(255, 255, 255, 0.95);
  color: var(--text-dark);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.nav-button a.register {
  background: var(--primary-green);
  color: #fff;
}

/* Hamburger - default hidden (shown on mobile) */
/* On mobile it's fixed so it doesn't move with .navbar transform */
.hamburger {
  display: none;
  width: 28px;
  height: 22px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0;
  z-index: 1400;
}
.hamburger span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--text-dark);
  border-radius: 3px;
  transition: transform 220ms ease, opacity 180ms ease;
}
.hamburger span + span {
  margin-top: 6px;
}
.hamburger.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-8px);
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ===========================
   RESPONSIVE: Tablet & Mobile
   =========================== */

/* <= 1024px: show compact nav-button next to hamburger */
@media (max-width: 1024px) {
  .nav {
    gap: 1.5rem;
    margin-left: 1rem;
  }

  /* Place nav-button fixed to the right, left of hamburger.
     Hamburger will appear to the far right (we'll show it in next rule) */
  .nav-button {
    display: flex !important;
    position: fixed;
    top: calc(var(--nav-h) / 2 - 12px); /* vertically center */
    right: calc(
      1.5rem + 44px
    ); /* 1.5rem = hamburger right, 44px ~ hamburger+spacing */
    gap: 8px;
    align-items: center;
    z-index: 1300;
    background: transparent;
    padding: 0;
  }
  .nav-button .username {
    display: none;
  } /* hide username to keep compact */

  .nav-button a {
    padding: 6px 10px;
    font-size: 0.82rem;
    border-radius: 8px;
  }
  .nav-button a.login {
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-dark);
  }
  .nav-button a.register {
    background: var(--primary-green);
    color: #fff;
  }
}

/* <= 768px: mobile behavior */
@media (max-width: 1024px) {
  /* show hamburger as fixed element — stays clickable even when navbar hidden */
  .hamburger {
    display: block;
    position: fixed;
    top: calc(var(--nav-h) / 2 - 11px);
    right: 1rem;
    z-index: 1400;
  }

  /* mobile nav overlay (hidden by default) */
  .nav {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    height: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    transition: height 360ms cubic-bezier(0.2, 0.9, 0.2, 1);
    z-index: 1350;
    margin: 0;
    padding: 0;
  }

  .nav.active {
    display: flex;
    height: calc(100vh - var(--nav-h));
  }

  .nav li {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .nav a {
    padding: 1rem 0;
    color: #fff;
    display: block;
    font-size: 1.05rem;
  }

  /* nav-button adjustments on smaller mobile */
  .nav-button {
    right: calc(1rem + 44px);
    top: calc(var(--nav-h) / 2 - 15px);
  }
  .nav-button a {
    padding: 5px 8px;
    font-size: 0.78rem;
  }
}

/* Very small phones */
@media (max-width: 480px) {
  :root {
    --nav-h: 64px;
  }
  .hamburger {
    top: calc(var(--nav-h) / 2 - 11px);
    right: 0.7rem;
  }
  .nav-button {
    right: calc(0.7rem + 44px);
    top: calc(var(--nav-h) / 2 - 15px);
  }
}

/* Optional helper class (controlled by JS) to hide nav-button when mobile menu opens */
.nav-button.hidden-by-menu {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

/* Update User Menu Styles */
.user-menu {
    position: relative;
    cursor: pointer;
}

.username {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    
    border-radius: 8px;
    background: rgb(255, 255, 255);
    transition: all 0.3s ease;
}

.username i {
    font-size: 16px;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.menu-item {
    display: flex !important;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    color: var(--text-dark) !important;
    text-decoration: none;
    transition: background-color 0.3s ease;
    font-size: 14px;
    border: none !important;
    background: transparent;
}

.menu-item:hover {
    background: rgba(0, 0, 0, 0.05);
}

.menu-item.logout-btn {
    color: #dc3545 !important;
    border-top: 1px solid rgba(0, 0, 0, 0.08) !important;
}

.menu-item.logout-btn:hover {
    background: #fff5f5;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .username span,
    .username i.fa-chevron-down {
        display: none;
    }

    .user-menu {
        margin-right: 48px;
    }

    .user-dropdown {
        right: -16px;
    }
}