::-webkit-scrollbar {
    display: none;
}

.container {
    margin-left: 0px;
    position: relative;
    width: 100%;
    height: 100vh;
    overflow-y: scroll;
    direction: rtl;
}

/* Optional custom scrollbar styling */
.container::-webkit-scrollbar {
    width: 10px;
}

.container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
}

.container::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 6px;
    transition: background 0.3s ease;
}

.container::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.6);
}

/* Firefox scrollbar */
.container {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.4) rgba(0, 0, 0, 0.05);
}

.sidebar::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 5px;
    transition: background 0.3s ease;
}

/* Reveal on hover */
.sidebar:hover::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.5);
}

/* Firefox */
.sidebar {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0);
}

.sidebar:hover {
    scrollbar-color: rgba(0, 0, 0, 0.5) rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Vazirmatn', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--color-2);
    min-height: 100%;
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Topbar (Mobile) */
.topbar {
    display: none;
    width: 100%;
    background: var(--color-5);
    color: var(--color-2);
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1001;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.topbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
}

.site-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.menu-btn {
    background: none;
    border: none;
    color: var(--color-1);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Sidebar */
.sidebar {
    width: 300px;
    background: var(--color-5);
    color: var(--color-2);
    transition: all 0.4s ease;
    position: fixed;
    right: 0;
    left: auto;
    transform: translateX(0);
    top: 0;
    height: 100vh;
    z-index: 1000;
    direction: rtl;
    overflow-y: auto;
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.3);
}

.sidebar-header {
    background: var(--color-5);
    z-index: 1000;
    padding: 25px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-title {
    font-size: 1.3rem;
    color: var(--color-2);
    padding: auto;
}

.close-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.4rem;
    cursor: pointer;
}


.sidebar-section {
    padding: 20px;
}

.section-title {
    color: var(--text);
    font-weight: 600;
    margin-bottom: 10px;

}

.gray-title {
    color: var(--color-2);
    direction: rtl;
    font-size: 18px;
}

.sidebar-list {
    list-style: none;
    margin: 0;
    padding: 0;
}


.nav-item {
    padding: 12px 15px;
    margin-bottom: 5px;
    border-left: 4px solid transparent;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    direction: rtl;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(-3px);
    color: var(--text);
}

.nav-item a {
    color: var(--text);
    text-decoration: none;
    display: block;
}

.nav-item.active {
    border-right-color: var(--color-3);
    color: var(--text);
}


/* Responsive */
@media (max-width: 1000px) {

    .container {
        width: 100%;
        max-width: 100%;
    }

    .sidebar {
        width: 100%;
        transform: translateX(100%);
        position: fixed;
        top: 0;
        left: 0;
        right: auto;
        height: 100%;
        z-index: 2000;
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-header {
        direction: ltr;
    }

    .topbar {
        display: block;
        direction: ltr;
    }

    .close-btn {
        display: block;
    }

    .main-content.expanded {
        margin-right: 0px;
        margin: 20px;
    }

    .sidebar.collapsed {
        transform: translateX(100%);
    }

    .sidebar:not(.collapsed) {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0px;
        overflow: hidden;
    }

    .bottom-section {
        flex-direction: column;
    }

    .video-card {
        flex-direction: column;
    }

    .toggle-btn {
        left: 20px;
    }
}

.main-content {
    flex: 1;
    margin-right: 13%;
    padding-top: 80px;
    transition: 0.3s ease;
}

.content-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: 30px;
}

.section-title {
    font-size: 2.5rem;
    color: var(--text);
    margin-bottom: 15px;
    font-weight: 700;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-5);
    line-height: 1.6;
    margin-bottom: 25px;
}

.content-card {
    padding: 25px;
}

.card-title {
    font-size: 1.3rem;
    color: var(--text);
    margin-bottom: 15px;
    font-weight: 600;
}

.importance-level {
    display: inline-block;
    padding: 8px 20px;
    background: var(--color-4);
    color: var(--color-2);
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.how-to-list {
    list-style: none;
    margin: 15px 0;
}

.how-to-list li {
    padding: 8px 0;
    position: relative;
    color: var(--text);
}

.how-to-list li::before {
    content: "✓";
    color: #a25073;
    font-weight: bold;
    margin-left: 25px;
}

.cons-title,
.pros-title {
    margin-bottom: 30px;
}

.pros-title h4 {
    font-size: 25px;
    font-weight: 700;
    color: var(--text-black-900);
    position: relative;
}

.pros-title h4::before {
    content: ' ';
    height: 4px;
    border-radius: 3px;
    width: 50px;
    background-color: var(--color-3);
    position: absolute;
    top: 100%;
}

.pros-title h4::after {
    content: ' ';
    height: 4px;
    border-radius: 3px;
    width: 25px;
    background-color: var(--color-3);
    position: absolute;
    right: 0px;
    top: 120%;
}

.cons-title h4 {
    font-size: 25px;
    font-weight: 700;
    color: var(--text-black-900);
    position: relative;
}

.cons-title h4::before {
    content: ' ';
    height: 4px;
    border-radius: 3px;
    width: 50px;
    background-color: var(--color-3);
    position: absolute;
    top: 100%;
}

.cons-title h4::after {
    content: ' ';
    height: 4px;
    border-radius: 3px;
    width: 25px;
    background-color: var(--color-3);
    position: absolute;
    right: 0px;
    top: 120%;
}

.example-section {
    margin: 20px 0;
    font-family: 'vazirmatn', sans-serif;
}

.example-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.example-content {
    position: relative;
    background-color: var(--color-1);
    /* dark box */
    color: var(--text);
    padding: 12px 16px;
    border-radius: 6px;
}

.example-description {
    margin-top: 6px;
    font-size: 14px;
    color: var(--text);
}

/* LIBRARY FOOTER */
.footer-inner {
    padding: 10px;
    position: relative;
    left: 0px;
    bottom: 0px;
    right: 0px;
    text-align: center;
    top: 40px;
}

.footer-inner .footer-item {
    flex: 0 0 100%;
    max-width: 100%;
    font-size: 16px;
    font-family: 'poppins';
    color: rgb(91, 91, 91);
    display: block;
    margin: 0px;
}