/* Navbar Styles - Main navigation header with logo, links, and utilities - Mobile First */
.header {
  /* Positioning & Display */
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;

  /* Box Model */
  padding: var(--spacing-sm) 0;

  /* Effects & Transitions */
  transition: all 0.3s ease;
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));

  /* Nested scroll progress */
  & .scroll-progress {
    /* Positioning & Display */
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1001;

    /* Box Model */
    height: 2px;
    width: 0%;

    /* Colors & Backgrounds */
    background: var(--accent-color);

    /* Effects & Transitions */
    transition: width 0.1s ease;
  }

  & .nav-content {
    /* Positioning & Display */
    display: flex;
    justify-content: space-between;
    align-items: center;

    /* Box Model */
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-sm) 0 var(--spacing-md);

    & .nav-left {
      /* Positioning & Display */
      display: flex;
      align-items: center;

      /* Box Model */
      gap: 0.5rem;

      & .nav-logo {
        /* Box Model */
        width: 30px;
        height: 30px;
        border-radius: 50%;

        /* Other */
        object-fit: cover;
        display: none;
        /* Hidden on mobile by default */
      }

      & .nav-name {
        /* Typography */
        font-size: 1.1rem;
        color: var(--text-color);
        text-decoration: none;
        font-weight: 600;
        letter-spacing: -0.5px;
      }
    }

    /* Desktop Nav Menu - Hidden on mobile */
    & .desktop-nav {
      /* Positioning & Display */
      display: none;
    }

    & .nav-right {
      /* Positioning & Display */
      display: flex;
      align-items: center;

      /* Box Model */
      gap: 1rem;

      & .nav-utils {
        /* Positioning & Display */
        display: flex;
        align-items: center;

        /* Box Model */
        gap: 1rem;
      }
    }
  }
}

/* Theme and Language Buttons */
.button-theme,
.language-button {
  /* Positioning & Display */
  display: flex;
  align-items: center;

  /* Box Model */
  gap: 0.5rem;
  padding: 0.5rem;
  border-radius: var(--border-radius-pill);
  border: none;

  /* Typography */
  color: var(--text-color);
  font-size: 1.1rem;

  /* Colors & Backgrounds */
  background: transparent;

  /* Effects & Transitions */
  transition: all 0.3s ease;

  /* Other */
  cursor: pointer;

  &:hover {
    /* Typography */
    color: var(--accent-color);
  }
}

.language-button {
  & span {
    /* Typography */
    font-size: 0.9rem;
    font-weight: 500;
  }

  & span[data-lang]:not([data-lang="current"]) {
    /* Positioning & Display */
    display: none;
  }
}

/* Mobile Navigation Toggle - Visible by default on mobile */
.button-menu-or-close {
  /* Positioning & Display */
  display: block;

  /* Box Model */
  padding: 0.5rem;
  border: none;

  /* Typography */
  color: var(--text-color);
  font-size: 1.2rem;

  /* Colors & Backgrounds */
  background: transparent;

  /* Effects & Transitions */
  transition: color 0.3s ease, background-color 0.3s ease;

  /* Other */
  cursor: pointer;

  &:hover {
    /* Typography */
    color: var(--accent-color);
  }
}

/* Mobile Navigation Sidebar - Mobile First */
.nav-sidebar {
  /* Positioning & Display */
  display: flex;
  flex-direction: column;
  align-items: center;
  position: fixed;
  z-index: 999;
  overflow-y: auto;
  min-width: 100%;
  top: 0;
  left: 0;

  /* Box Model */
  padding: 4rem 2rem;
  gap: 1rem;

  /* Colors & Backgrounds */
  background: var(--background-color-accent);

  /* Effects & Transitions */
  opacity: 0;
  height: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));

  &.active {
    /* Positioning & Display */
    opacity: 1;
    height: 100vh;
  }

  &.close {
    /* Positioning & Display */
    height: 0vh;
    padding: 0;
  }

  & .nav-link {
    /* Typography */
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    text-align: center;
    padding: 0.5rem 1rem;

    /* Effects & Transitions */
    transition: all 0.3s ease;

    &:hover {
      /* Typography */
      color: var(--accent-color);
    }

    &.active {
      /* Typography */
      color: var(--accent-color);
      font-weight: bold;
    }

    &:last-child {
      margin-bottom: auto;
    }
  }

  /* Mobile Logo - Visible by default on mobile */
  & .mobile-logo {
    /* Positioning & Display */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: auto;

    & .welcome {
      text-align: center;
    }

    & .nav-logo-mobile {
      /* Box Model */
      width: 90px;
      height: 90px;
      border-radius: 100%;
    }
  }
}

/* Responsive styles - Tablet */
@media (min-width: 768px) {
  .header {
    & .nav-content {
      /* Box Model */
      padding: 0 var(--spacing-lg);

      & .nav-left {
        /* Box Model */
        gap: 0.75rem;

        & .nav-logo {
          display: block;
          /* Show logo on tablet */
        }

        & .nav-name {
          /* Typography */
          font-size: 1.2rem;
        }
      }

      & .nav-right {
        /* Box Model */
        gap: 1.5rem;

        & .nav-utils {
          /* Box Model */
          gap: 0.75rem;
        }
      }
    }
  }
}

/* Responsive styles - Desktop */
@media (min-width: 1200px) {
  .header {
    & .nav-content {
      /* Box Model */
      max-width: var(--container-width);

      /* Desktop Nav Menu */
      & .desktop-nav {
        /* Positioning & Display */
        display: flex;
        align-items: center;

        /* Box Model */
        gap: 1rem;

        /* For spacing between name and menu entries */
        margin-left: auto;
        margin-right: auto;

        & .nav-link {
          /* Positioning & Display */
          display: inline-block;

          /* Box Model */
          padding: 0.5rem 1rem;

          /* Typography */
          color: var(--text-color);
          text-decoration: none;
          font-size: 0.95rem;
          font-weight: 500;

          /* Effects & Transitions */
          transition: all 0.3s ease;
          position: relative;

          &:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 50%;
            background-color: var(--accent-color);
            transition: all 0.3s ease;
          }

          &:hover {
            /* Typography */
            color: var(--accent-color);

            &:after {
              width: 80%;
              left: 10%;
            }
          }

          &.active {
            /* Typography */
            color: var(--accent-color);
            font-weight: bold;

            &:after {
              width: 80%;
              left: 10%;
            }
          }
        }
      }
    }
  }

  /* Hide mobile menu button on desktop */
  .button-menu-or-close {
    display: none;
  }
}