/* =============================================================================
   HEADER STYLES - Navigation and Logo
   ============================================================================= */

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    z-index: 1000;
    transition: width 0.1s ease;
}

/* Header with glass morphism */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 8px 32px var(--shadow-light);
    z-index: 900;
    transition: all 0.3s ease;
}

.navbar {
    padding: 16px 0;
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.5px;
    font-family: 'Montserrat', sans-serif;
    transition: all 0.3s ease;
    position: relative;
}

.logo-icon {
    width: 40px;
    height: 40px;
    transition: transform 0.5s ease;
    filter: drop-shadow(0 2px 8px rgba(16, 185, 129, 0.3));
    border-radius: 8px;
    object-fit: contain;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.logo:hover .logo-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Navigation */
.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    font-family: 'Montserrat', sans-serif;
    transition: all 0.3s ease;
    position: relative;
    padding: 8px 16px;
    border-radius: 20px;
    letter-spacing: 0.3px;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(255, 64, 64, 0.1));
    border-radius: 20px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.nav-links a:hover::before {
    opacity: 1;
    transform: scale(1);
}

.nav-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    z-index: 1000;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        border-top: 1px solid var(--border-color);
        gap: 15px;
        box-shadow: 0 8px 25px var(--shadow-light);
        border-radius: 0 0 16px 16px;
    }

    .nav-links.active {
        display: flex;
        animation: slideDown 0.3s ease-out;
    }

    .mobile-menu-toggle {
        display: flex;
    }
}

@keyframes slideDown {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}