/* ===== شريط التنقل المتجاوب ===== */
.site-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c3e50 100%);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
}

.header-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    position: relative;
}

/* الشعار */
.brand-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1002;
}

.brand-logo span {
    color: var(--secondary-color);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* القائمة الرئيسية */
.main-nav {
    display: flex;
    align-items: start;
    gap: 2rem;
}

.nav-list {
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-link-item {
    position: relative;
}

.nav-link {
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    text-decoration: none;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--secondary-color);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--secondary-color);
    color: #fff;
    box-shadow: 0 4px 12px rgba(212, 172, 13, 0.3);
}

/* القوائم المنسدلة */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: "▼";
    font-size: 0.7rem;
    margin-right: 0.3rem;
    transition: var(--transition);
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: #fff;
    min-width: 220px;
    border-radius: 0.75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 1000;
    padding: 0.5rem 0;
}

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

.dropdown-item {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    border-bottom: 1px solid #f8f9fa;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: #f8f9fa;
    color: var(--secondary-color);
    padding-right: 2rem;
}

.dropdown-item.active {
    background: var(--secondary-color);
    color: #fff;
}

/* زر القائمة للهواتف */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: var(--transition);
    z-index: 1002;
}

.mobile-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== التجاوب مع الشاشات المتوسطة ===== */
@media (max-width: 1024px) {
    .nav-list {
        gap: 1rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: 0.6rem 0.8rem;
    }
    
    .dropdown-menu {
        min-width: 200px;
    }
}

/* ===== التجاوب مع الشاشات الصغيرة ===== */
@media (max-width: 768px) {
    .header-container {
        width: 95%;
        padding: 0 0.5rem;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: linear-gradient(135deg, var(--primary-color) 0%, #2c3e50 100%);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 1.5rem 2rem;
        transition: all 0.4s ease;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.2);
        overflow-y: auto;
        z-index: 1001;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-link-item {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link-item:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        padding: 1rem 0;
        font-size: 1rem;
        width: 100%;
        justify-content: space-between;
        border-radius: 0;
        background: none !important;
    }
    
    .nav-link.active {
        background: var(--secondary-color) !important;
        color: #fff;
    }
    
    .nav-dropdown {
        width: 100%;
    }
    
    .dropdown-menu {
        position: static;
        background: rgba(0, 0, 0, 0.2);
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        margin: 0.5rem 0 0 1rem;
        border-radius: 0.5rem;
        padding: 0.5rem 0;
        width: calc(100% - 1rem);
    }
    
    .nav-dropdown.active .dropdown-menu {
        display: block;
    }
    
    .dropdown-item {
        color: rgba(255, 255, 255, 0.9);
        padding: 0.8rem 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        font-size: 0.95rem;
    }
    
    .dropdown-item:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--secondary-color);
    }
    
    .dropdown-item.active {
        background: var(--secondary-color);
        color: #fff;
    }
    
    /* إغلاق القائمة عند النقر خارجها */
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        backdrop-filter: blur(2px);
    }
    
    .nav-overlay.active {
        display: block;
    }
}

/* ===== التجاوب مع الشاشات الصغيرة جداً ===== */
@media (max-width: 480px) {
    .header-container {
        width: 100%;
        padding: 0 1rem;
    }
    
    .nav-wrapper {
        padding: 0.8rem 0;
    }
    
    .brand-logo {
        font-size: 1.3rem;
    }
    
    .main-nav {
        width: 280px;
        padding: 4rem 1rem 2rem;
    }
    
    .nav-link {
        font-size: 0.95rem;
        padding: 0.9rem 0;
    }
    
    .mobile-toggle {
        font-size: 1.3rem;
        padding: 0.4rem;
    }
    
    .dropdown-menu {
        margin: 0.5rem 0 0 0.5rem;
        width: calc(100% - 0.5rem);
    }
}

/* ===== تأثيرات الحركة ===== */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.main-nav.active .nav-link-item {
    animation: slideInRight 0.3s ease-out forwards;
}

.main-nav.active .nav-link-item:nth-child(1) { animation-delay: 0.1s; }
.main-nav.active .nav-link-item:nth-child(2) { animation-delay: 0.15s; }
.main-nav.active .nav-link-item:nth-child(3) { animation-delay: 0.2s; }
.main-nav.active .nav-link-item:nth-child(4) { animation-delay: 0.25s; }
.main-nav.active .nav-link-item:nth-child(5) { animation-delay: 0.3s; }
.main-nav.active .nav-link-item:nth-child(6) { animation-delay: 0.35s; }
.main-nav.active .nav-link-item:nth-child(7) { animation-delay: 0.4s; }

/* ===== تحسين إمكانية الوصول ===== */
@media (prefers-reduced-motion: reduce) {
    .nav-link,
    .dropdown-menu,
    .main-nav {
        transition: none;
    }
    
    .main-nav.active .nav-link-item {
        animation: none;
    }
}

/* ===== وضع الظلام ===== */
@media (prefers-color-scheme: dark) {
    .dropdown-menu {
        background: #2c3e50;
        border: 1px solid #34495e;
    }
    
    .dropdown-item {
        color: #ecf0f1;
        border-bottom: 1px solid #34495e;
    }
    
    .dropdown-item:hover {
        background: #34495e;
    }
}

/* ===== دعم المتصفحات القديمة ===== */
@supports not (backdrop-filter: blur(10px)) {
    .site-header {
        background: var(--primary-color);
    }
}