/* ========================================
   NAVIGATION BAR
   ======================================== */

#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 40px;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-container {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 32px;
    background: rgba(0, 5, 15, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(100, 200, 255, 0.2);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.nav-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 20, 40, 0.3), rgba(0, 10, 30, 0.3));
    border-radius: 16px;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.nav-container:hover .nav-bg {
    opacity: 1;
}

/* ========================================
   LOGO
   ======================================== */

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 300;
    letter-spacing: 3px;
    color: #ffffff;
}

.logo-icon {
    font-size: 32px;
    animation: logoRotate 10s linear infinite;
    filter: drop-shadow(0 0 10px rgba(100, 200, 255, 0.6));
}

@keyframes logoRotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.logo-text {
    background: linear-gradient(135deg, #64c8ff, #ffffff, #64c8ff);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: logoGradient 3s ease infinite;
}

@keyframes logoGradient {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* ========================================
   NAVIGATION ITEMS
   ======================================== */

.nav-items {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.nav-icon {
    font-size: 20px;
    transition: transform 0.3s ease;
}

.nav-text {
    position: relative;
    z-index: 2;
}

.nav-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(100, 200, 255, 0.3), transparent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

/* Hover Effects */
.nav-link:hover {
    color: #ffffff;
    background: rgba(100, 200, 255, 0.1);
    border: 1px solid rgba(100, 200, 255, 0.3);
    transform: translateY(-2px);
}

.nav-link:hover .nav-icon {
    transform: scale(1.2) rotate(10deg);
}

.nav-link:hover .nav-glow {
    width: 200px;
    height: 200px;
}

/* Active State */
.nav-link.active {
    color: #ffffff;
    background: rgba(100, 200, 255, 0.15);
    border: 1px solid rgba(100, 200, 255, 0.4);
    box-shadow: 0 4px 20px rgba(100, 200, 255, 0.3);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #64c8ff, transparent);
    animation: activeGlow 2s ease-in-out infinite;
}

@keyframes activeGlow {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

/* Click Animation */
.nav-link:active {
    transform: translateY(0) scale(0.95);
}

/* Planet-Specific Glow Colors */
.nav-link[data-planet="earth"]:hover .nav-glow {
    background: radial-gradient(circle, rgba(100, 200, 255, 0.4), transparent);
}

.nav-link[data-planet="mars"]:hover .nav-glow {
    background: radial-gradient(circle, rgba(255, 100, 80, 0.4), transparent);
}

.nav-link[data-planet="jupiter"]:hover .nav-glow {
    background: radial-gradient(circle, rgba(255, 180, 100, 0.4), transparent);
}

.nav-link[data-planet="blackhole"]:hover .nav-glow {
    background: radial-gradient(circle, rgba(150, 50, 200, 0.4), transparent);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-container {
        padding: 12px 24px;
    }

    .nav-items {
        gap: 4px;
    }

    .nav-link {
        padding: 10px 16px;
        font-size: 12px;
    }

    .logo-text {
        display: none;
    }
}

@media (max-width: 768px) {
    #main-nav {
        padding: 15px 20px;
    }

    .nav-text {
        display: none;
    }

    .nav-link {
        padding: 10px;
    }

    .nav-icon {
        font-size: 24px;
    }
}

/* Entrance Animation */
@keyframes navSlideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#main-nav.visible {
    animation: navSlideDown 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   DROPDOWN MENUS
   ======================================== */

.dropdown {
    position: relative;
    display: inline-block;
}

/* Dropdown Content (Hidden by Default) */
.dropdown-content {
    visibility: hidden;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: rgba(0, 5, 20, 0.95);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(100, 200, 255, 0.2);
    border-radius: 12px;
    padding: 8px 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    z-index: 1001;
    margin-top: 5px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: 0.1s;
    /* Buffer to prevent accidental closure */
}

/* Show Dropdown on Hover */
.dropdown:hover .dropdown-content {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
    /* Open immediately on intentional hover */
}

/* Dropdown Links */
.dropdown-content .nav-link {
    width: 100%;
    box-sizing: border-box;
    border-radius: 0;
    border: none;
    background: transparent;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.dropdown-content .nav-link:hover {
    background: rgba(100, 200, 255, 0.1);
    transform: translateX(5px);
}

.dropdown-content .nav-link .nav-icon {
    font-size: 18px;
    margin-right: 12px;
}

/* Active State in Dropdown */
.dropdown-content .nav-link.active::before {
    display: none;
    /* Remove bottom border */
}

.dropdown-content .nav-link.active {
    background: rgba(100, 200, 255, 0.15);
    color: #fff;
    border-left: 2px solid #64c8ff;
}

/* Specific Glows for Dropdown Items */
.dropdown-content .nav-link:hover .nav-glow {
    width: 100%;
    /* Fill line */
    height: 100%;
    background: linear-gradient(90deg, rgba(100, 200, 255, 0.1), transparent);
    border-radius: 0;
}

/* Pointer for toggle */
.dropdown-toggle {
    cursor: default;
}

@media (max-width: 1024px) {
    .dropdown:hover .dropdown-content {
        position: fixed;
        top: 70px;
        left: 50%;
        transform: translateX(-50%);
        width: 90%;
        max-width: 300px;
        text-align: center;
    }

    .dropdown-content .nav-link {
        justify-content: center;
    }
}