:root {
    --kariz-primary: #0073aa;
    --kariz-primary-dark: #005a87;
    --kariz-accent: #00e5ff;
    --kariz-bg-glass: rgba(255, 255, 255, 0.88);
    --kariz-border-glass: rgba(255, 255, 255, 0.4);
    --kariz-text: #2c3e50;
    --kariz-text-muted: #7f8c8d;
    --kariz-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@media (max-width: 1024px) {
    .d-none-mobile { display: none !important; }
}

/* دکمه همبرگری فعال‌ساز */
.kariz-hamburger-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--kariz-primary), var(--kariz-primary-dark));
    color: #fff;
    padding: 12px 24px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 700;
    font-size: 14px;
    transition: var(--kariz-transition);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 115, 170, 0.2);
}

.kariz-hamburger-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 115, 170, 0.3);
}

/* ساختار آیکون همبرگر */
.hamburger-box { width: 18px; height: 12px; position: relative; }
.hamburger-inner, .hamburger-inner::before, .hamburger-inner::after {
    width: 18px; height: 2px; background-color: #fff; position: absolute; border-radius: 4px; transition: var(--kariz-transition);
}
.hamburger-inner { top: 50%; transform: translateY(-50%); }
.hamburger-inner::before { content: ""; top: -5px; }
.hamburger-inner::after { content: ""; bottom: -5px; }

/* پنل سرتاسری تمام صفحه با انیمیشن Fade */
.kariz-fs-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 15, 30, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 999999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.kariz-fs-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* کانتینر اصلی منو با انیمیشن Scale */
.kariz-fs-container {
    width: 100%;
    max-width: 1100px;
    height: 80vh;
    background: var(--kariz-bg-glass);
    border: 1px solid var(--kariz-border-glass);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95) translateY(15px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.kariz-fs-overlay.active .kariz-fs-container {
    transform: scale(1) translateY(0);
}

/* هدر منو */
.kariz-fs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-brand { display: flex; align-items: center; gap: 12px; }
.brand-dot {
    width: 10px;
    height: 10px;
    background-color: var(--kariz-primary);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--kariz-primary);
}
.header-brand h3 { margin: 0; font-size: 1.3rem; font-weight: 800; color: var(--kariz-text); }

/* دکمه بستن مدرن */
.kariz-fs-close {
    background: rgba(0,0,0,0.03);
    border: none;
    border-radius: 20px;
    padding: 8px 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--kariz-transition);
}
.kariz-fs-close:hover {
    background: rgba(255, 59, 48, 0.1);
}
.close-icon { font-size: 20px; color: #ff3b30; font-weight: bold; }
.close-text { font-size: 12px; color: var(--kariz-text-muted); font-weight: 600; }

/* بدنه دو ستونه مگا */
.kariz-fs-body { flex: 1; display: flex; overflow: hidden; position: relative; }
.kariz-fs-layout { display: flex; width: 100%; height: 100%; }

/* ستون سایدبار (راست) */
.kariz-fs-sidebar {
    width: 280px;
    background: rgba(0, 0, 0, 0.015);
    border-left: 1px solid rgba(0, 0, 0, 0.05);
    overflow-y: auto;
    padding: 20px;
}

.fs-parent-list { list-style: none; padding: 0; margin: 0; }
.fs-parent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-radius: 12px;
    cursor: pointer;
    margin-bottom: 6px;
    transition: var(--kariz-transition);
}

.fs-parent-item a {
    text-decoration: none;
    color: var(--kariz-text);
    font-weight: 700;
    font-size: 0.95rem;
    flex: 1;
}

.fs-arrow {
    width: 6px;
    height: 6px;
    border-left: 2px solid var(--kariz-text-muted);
    border-bottom: 2px solid var(--kariz-text-muted);
    transform: rotate(45deg);
    transition: var(--kariz-transition);
    opacity: 0.5;
}

/* هاور و اکتیو سایدبار */
.fs-parent-item:hover {
    background: rgba(0, 115, 170, 0.06);
}
.fs-parent-item.active {
    background: var(--kariz-primary);
}
.fs-parent-item.active a { color: #fff; }
.fs-parent-item.active .fs-arrow {
    border-color: #fff;
    transform: rotate(45deg) scale(1.2);
    opacity: 1;
}

/* پنل محتوا (چپ) */
.kariz-fs-content {
    flex: 1;
    overflow-y: auto;
    padding: 40px;
    background: #ffffff;
}

.fs-child-panel { display: none; }
.fs-child-panel.active {
    display: block;
    animation: fsFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fsFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* گرید بندی فوق‌العاده تمیز و عریض */
.fs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.fs-group { display: flex; flex-direction: column; }

/* سطح دوم (پدر زیرمجموعه‌ها) */
.fs-title-level2 {
    font-weight: 800;
    font-size: 1rem;
    color: var(--kariz-primary);
    text-decoration: none;
    margin-bottom: 14px;
    border-bottom: 2px solid rgba(0, 115, 170, 0.1);
    padding-bottom: 8px;
    transition: var(--kariz-transition);
}
.fs-title-level2:hover {
    color: var(--kariz-primary-dark);
    border-bottom-color: var(--kariz-primary);
}

/* سطح سوم (نوه‌ها) */
.fs-list-level3 { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.fs-list-level3 a {
    color: #555;
    text-decoration: none;
    font-size: 0.88rem;
    transition: var(--kariz-transition);
    display: inline-block;
}
.fs-list-level3 a:hover {
    color: var(--kariz-primary);
    transform: translateX(-4px);
}

/* لودر خطی مینی‌مال (سرعت بالا و بدون سنگینی) */
.kariz-fs-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 3px;
    background: #f1f2f6;
    overflow: hidden;
    border-radius: 4px;
}

.spinner-line {
    width: 40%;
    height: 100%;
    background: var(--kariz-primary);
    position: absolute;
    animation: lineAnim 1.2s infinite ease-in-out;
}

@keyframes lineAnim {
    0% { left: -40%; }
    50% { left: 40%; width: 60%; }
    100% { left: 100%; }
}

.fs-empty-state { text-align: center; color: var(--kariz-text-muted); margin-top: 50px; font-size: 0.9rem; }