/* ************************************** */
/* navbar.css */
/* ************************************** */

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-elegant);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background: var(--gradient-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 1px;
}

.mobile-menu-toggle.active .hamburger:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-toggle.active .hamburger:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(2, 45, 64, 0.98);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

.mobile-menu.active {
    right: 0;
}

.mobile-nav-links {
    list-style: none;
    text-align: center;
}

.mobile-nav-links li {
    margin: 2rem 0;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active .mobile-nav-links li {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu.active .mobile-nav-links li:nth-child(1) {
    transition-delay: 0.1s;
}

.mobile-menu.active .mobile-nav-links li:nth-child(2) {
    transition-delay: 0.2s;
}

.mobile-menu.active .mobile-nav-links li:nth-child(3) {
    transition-delay: 0.3s;
}

.mobile-menu.active .mobile-nav-links li:nth-child(4) {
    transition-delay: 0.4s;
}

.mobile-menu.active .mobile-nav-links li:nth-child(5) {
    transition-delay: 0.5s;
}

.mobile-nav-links a {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', sans-serif;
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    background: var(--gradient-elegant);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mobile-nav-links a:hover {
    transform: scale(1.05);
}