/* Modern Glassmorphism Header */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(30, 30, 40, 0.65);
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    box-shadow: 0 4px 24px 0 rgba(0,0,0,0.10);
    z-index: 1001;
    transition: background 0.3s, box-shadow 0.3s;
}
.header-container {
    max-width: 90%;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 36px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-size: 30px;
    font-weight: 700;
    letter-spacing: 2px;
    font-family: 'Roboto', 'Segoe UI', Arial, sans-serif;
    text-shadow: 0 2px 8px rgba(0,0,0,0.10);
    user-select: none;
}
.logo-icon svg {
    display: block;
}
.logo-text {
    font-size: 1.3em;
    font-weight: 700;
    letter-spacing: 1.5px;
}
.main-nav {
    display: flex;
    gap: 44px;
    align-items: center;
}
.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 19px;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    padding: 8px 0;
    transition: color 0.2s, transform 0.2s;
    opacity: 0.95;
}
.nav-link::after {
    content: '';
    display: block;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light) 0%, var(--accent-color) 100%);
    border-radius: 2px;
    transition: width 0.35s cubic-bezier(.4,2,.6,1), background 0.2s;
    position: absolute;
    left: 0;
    bottom: -5px;
}
.nav-link:hover {
    color: var(--primary-light);
    opacity: 1;
    transform: scale(1.08);
}
.nav-link:hover::after {
    width: 100%;
}
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 8px;
    z-index: 1101;
    width: 44px;
    height: 44px;
    justify-content: center;
    align-items: center;
    background: rgba(255,255,255,0.10);
    border-radius: 50%;
    transition: background 0.2s;
}
.menu-toggle:hover {
    background: rgba(255,255,255,0.18);
}
.menu-toggle span {
    width: 30px;
    height: 3.5px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.35s cubic-bezier(.4,2,.6,1);
    display: block;
}
.menu-toggle.active span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
}
@media (max-width: 900px) {
    .header-container {
        padding: 14px 10px;
    }
    .main-nav {
        gap: 20px;
    }
    .logo-text {
        font-size: 1.1em;
    }
}
@media (max-width: 700px) {
    .main-nav {
        position: fixed;
        top: 0;
        right: -100vw;
        height: 100vh;
        width: 260px;
        background: rgba(30,30,40,0.97);
        backdrop-filter: blur(16px) saturate(180%);
        -webkit-backdrop-filter: blur(16px) saturate(180%);
        flex-direction: column;
        align-items: flex-start;
        padding: 110px 32px 32px 32px;
        gap: 36px;
        transition: right 0.4s cubic-bezier(.4,2,.6,1);
        box-shadow: -2px 0 16px rgba(0,0,0,0.18);
    }
    .main-nav.open {
        right: 0;
    }
    .menu-toggle {
        display: flex;
    }
}
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: #f7f7f7;
}