/* الهيدر الرئيسي للموقع (شعار + قائمة تنقل)، مستخرج من assets/css/main.css
   لعرضه داخل صفحات التطبيق (حسابي...) دون تحميل main.css بالكامل وتعارض
   متغيراته العامة (body, a, :root) مع نظام تصميم app.css. */
.site-header {
    --sh-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --sh-radius-sm: 10px;
    --sh-transition: all 0.3s ease;
    --sh-header-height: 70px;
    background: var(--sh-gradient);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    height: var(--sh-header-height);
    display: flex;
    align-items: center;
}

.site-header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    width: 100%;
}

.site-header .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    width: 100%;
}

.site-header .site-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-header .logo-img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: var(--sh-transition);
}

.site-header .site-logo:hover .logo-img {
    opacity: 0.85;
}

.site-header .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--sh-radius-sm);
    transition: var(--sh-transition);
}

.site-header .nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--sh-transition);
}

.site-header .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.site-header .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.site-header .main-nav {
    display: none;
    position: absolute;
    top: var(--sh-header-height);
    right: 0;
    left: 0;
    background: var(--sh-gradient);
    padding: 15px 0;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    z-index: 999;
}

.site-header .main-nav.is-open {
    display: block;
}

.site-header .nav-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0 15px;
    list-style: none;
    margin: 0;
}

.site-header .nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.9) !important;
    padding: 12px 16px;
    border-radius: var(--sh-radius-sm);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--sh-transition);
    text-decoration: none;
}

.site-header .nav-link i {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.site-header .nav-link:hover,
.site-header .nav-link.active {
    background: rgba(255,255,255,0.2);
    color: white !important;
}

.site-header .nav-link.active {
    font-weight: 700;
    background: rgba(255,255,255,0.25);
}

@media (min-width: 768px) {
    .site-header {
        --sh-header-height: 75px;
    }

    .site-header .nav-toggle {
        display: none;
    }

    .site-header .main-nav {
        display: flex !important;
        position: static;
        background: none;
        padding: 0;
        box-shadow: none;
    }

    .site-header .nav-list {
        flex-direction: row;
        align-items: center;
        gap: 4px;
        padding: 0;
    }

    .site-header .nav-link {
        padding: 8px 14px;
        font-size: 0.88rem;
        white-space: nowrap;
    }
}