/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: #f8f9fa;
    box-shadow: 0 2px 10px rgba(41, 171, 226, 0.1);
    transition: all var(--transition-speed) ease;
    /* padding is handled by JS on scroll */
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0; /* Default padding, JS might modify this */
}

.logo img {
    height: 60px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-menu li {
    margin-left: 25px;
}

.nav-menu a {
    color: #495057;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

.nav-menu a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #29ABE2;
    transition: all var(--transition-speed) ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #29ABE2;
}

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

.menu-toggle {
    display: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1002;
    transition: all 0.3s ease;
}

.menu-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    background-color: #29ABE2;
}

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

.menu-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    background-color: #29ABE2;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: #495057;
    transition: all 0.3s ease;
}

.nav-menu .btn-shop { 
    background-color: #29ABE2;
    color: #ffffff;  
    padding: 9px 18px; 
    border-radius: 5px;
    font-weight: 600;
    display: inline-flex; 
    align-items: center;
    line-height: 1.2; 
    transition: all var(--transition-speed) ease;
}

.nav-menu .btn-shop:hover {
    background-color: #1f8ab8;
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(41, 171, 226, 0.3); 
}

.nav-menu .btn-shop:hover::after { 
    width: 0;
}

.nav-menu .btn-shop i {
    margin-left: 8px; 
    font-size: 0.9em; 
}

.nav-menu li.shop-btn {
    /* No specific styles needed if 'a' tag is styled correctly */
    /* margin-left is handled by .nav-menu li */
}


@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 50vw !important;
        max-width: 300px !important;
        height: 100vh;
        background-color: #ffffff;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        transition: all 0.5s cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 1001;
        padding: 80px 30px 30px;
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
        width: 100%;
        opacity: 0;
        transform: translateX(50px);
        transition: all 0.3s ease;
    }
    
    .nav-menu.active li {
        opacity: 1;
        transform: translateX(0);
    }
    
    .nav-menu li:nth-child(1) { transition-delay: 0.1s; }
    .nav-menu li:nth-child(2) { transition-delay: 0.2s; }
    .nav-menu li:nth-child(3) { transition-delay: 0.3s; }
    .nav-menu li:nth-child(4) { transition-delay: 0.4s; }
    .nav-menu li:nth-child(5) { transition-delay: 0.5s; }
    
    .nav-menu a {
        color: #ffffff;
        font-size: 1.1rem;
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .nav-menu a:hover,
    .nav-menu a.active {
        color: #29ABE2;
        padding-left: 10px;
    }
    
    .nav-menu a::after {
        display: none;
    }
    
    .nav-menu .btn-shop {
        width: 100%;
        text-align: center;
        margin-top: 20px;
        padding: 12px 20px;
        font-size: 1.1rem;
        background-color: #29ABE2;
        color: #ffffff;
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    
    .nav-menu .btn-shop:hover {
        background-color: #1f8ab8;
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(41, 171, 226, 0.2);
    }
    
    .nav-menu .btn-shop i {
        margin-left: 8px;
    }
}