/* ============================================
   NAVIGATION BAR - FIXED & RESPONSIVE
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand */
.nav-brand a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-family: 'Orbitron', sans-serif;
}

.brand-text {
    font-size: 24px;
    font-weight: 900;
    background: linear-gradient(135deg, #00f5ff 0%, #ff00ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-year {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-cyan);
    padding: 4px 8px;
    background: rgba(0, 245, 255, 0.1);
    border-radius: 5px;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Dropdown Menu */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
}

.nav-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 15px;
    min-width: 200px;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 12px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

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

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.dropdown-item:hover {
    background: rgba(0, 245, 255, 0.1);
    color: var(--accent-cyan);
    border-left-color: var(--accent-cyan);
    padding-left: 25px;
}

/* Light Theme Dropdown */
[data-theme="light"] .dropdown-menu {
    background: rgba(255, 255, 255, 0.98);
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .dropdown-item:hover {
    background: rgba(0, 153, 255, 0.1);
}

/* Navigation Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Theme Toggle */
.theme-toggle {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 22px;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: rgba(0, 245, 255, 0.1);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 245, 255, 0.2);
}

.theme-toggle .sun,
.theme-toggle .moon {
    position: absolute;
    transition: all 0.3s ease;
}

/* Dark theme - show sun icon */
[data-theme="dark"] .theme-toggle .sun {
    display: block;
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .moon {
    display: none;
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

/* Light theme - show moon icon */
[data-theme="light"] .theme-toggle .sun {
    display: none;
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

[data-theme="light"] .theme-toggle .moon {
    display: block;
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* Light theme navbar adjustments */
[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.9);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .theme-toggle {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 153, 255, 0.1);
    border-color: var(--accent-cyan);
}

[data-theme="light"] .nav-toggle {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .nav-toggle span {
    background: var(--text-primary);
}

[data-theme="light"] .nav-menu {
    background: rgba(255, 255, 255, 0.98);
    border-left-color: rgba(0, 0, 0, 0.1);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.nav-toggle:hover {
    background: rgba(0, 245, 255, 0.1);
    border-color: var(--accent-cyan);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   RESPONSIVE NAVIGATION
   ============================================ */

@media (max-width: 1024px) {
    .nav-menu {
        gap: 25px;
    }
    
    .nav-link {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 80px);
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        border-left: 1px solid rgba(255, 255, 255, 0.1);
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 30px;
        transition: right 0.3s ease;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    }
    
    .nav-link {
        width: 100%;
        padding: 15px 0;
        font-size: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-link:hover {
        padding-left: 10px;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 15px 0;
    }
    
    .brand-text {
        font-size: 20px;
    }
    
    .brand-year {
        font-size: 12px;
    }
    
    .nav-menu {
        width: 100%;
        right: -100%;
        top: 70px;
        height: calc(100vh - 70px);
    }
    
    .theme-toggle,
    .nav-toggle {
        width: 40px;
        height: 40px;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { top: 10px; opacity: 1; }
    100% { top: 30px; opacity: 0; }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

.arrow {
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid rgba(255, 255, 255, 0.3);
}