/* Root Variables */
:root {
    --primary-color: #1976d2;
    --accent-color: #00c853;
    --bg-color: #f5f7f9;
    --card-bg: #fafafa;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e1e8ed;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #333333;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.4);
    --hover-color: rgba(25, 118, 210, 0.1);
}

/* Light Mode Variables */
[data-theme="light"] {
    --bg-color: #f5f7f9;
    --card-bg: #fafafa;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e1e8ed;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --hover-color: rgba(25, 118, 210, 0.05);
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
}

/* Fade Animation Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

/* Performance optimizations for animations */
.left-sidebar,
.main-preview,
.right-sidebar {
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* Staggered animations for menu items */
.menu-item {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}


/* Navbar Styles */
.navbar {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 100vw;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    color: var(--secondary-color);
    transform: scale(1.05);
}

.nav-logo:visited {
    color: var(--primary-color);
}

.nav-logo i {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    text-align: center;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(25, 118, 210, 0.1);
}

/* Navigation Dropdown Styles */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.dropdown-toggle i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

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

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-bg);
    min-width: 180px;
    box-shadow: var(--shadow-hover);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    z-index: 1001;
    padding: 8px 0;
    margin-top: 5px;
}

.nav-dropdown:hover .dropdown-menu,
.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    font-weight: 500;
}

.dropdown-item:hover {
    background: var(--hover-color);
    color: var(--primary-color);
}

.dropdown-item.active {
    color: var(--primary-color);
    background: rgba(25, 118, 210, 0.1);
}

.dropdown-item.disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.dropdown-item.disabled:hover {
    background: none;
    color: var(--text-secondary);
}

.coming-soon {
    font-size: 0.75rem;
    font-style: italic;
    opacity: 0.7;
}

.profile-dropdown {
    position: relative;
}

.profile-icon {
    font-size: 1.8rem;
    color: var(--primary-color);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.profile-icon:hover {
    background: rgba(25, 118, 210, 0.1);
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 45%;
    background: var(--card-bg);
    min-width: 180px;
    box-shadow: var(--shadow);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    z-index: 1001;
}

.dropdown-content a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.dropdown-content a:hover {
    background: var(--bg-color);
}

.profile-dropdown:hover .dropdown-content {
    display: block;
}

/* Theme Switch Styles */
.theme-switch {
    --toggle-size: 18px;
    --container-width: 4em;
    --container-height: 1.8em;
    --container-radius: 4.5em;
    --circle-container-diameter: 2.4em;
    --sun-moon-diameter: 1.5em;
    --container-night-bg: #1D1F2C;
    --container-light-bg: #3D7EAE;
    --sun-bg: #ECCA2F;
    --moon-bg: #C4C9D1;
    --spot-color: #959DB1;
    --circle-container-offset: calc((var(--circle-container-diameter) - var(--container-height)) / 2 * -1);
    --stars-color: #fff;
    --clouds-color: #F3FDFF;
    --back-clouds-color: #AACADF;
    --transition: .5s cubic-bezier(0, -0.02, 0.4, 1.25);
    --circle-transition: .3s cubic-bezier(0, -0.02, 0.35, 1.17);
}

.theme-switch,
.theme-switch *,
.theme-switch *::before,
.theme-switch *::after {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-size: var(--toggle-size);
}

.theme-switch__container {
    width: var(--container-width);
    height: var(--container-height);
    background-color: var(--container-light-bg);
    border-radius: var(--container-radius);
    overflow: hidden;
    cursor: pointer;
    -webkit-box-shadow: 0em -0.062em 0.062em rgba(0, 0, 0, 0.25), 0em 0.062em 0.125em rgba(255, 255, 255, 0.94);
    box-shadow: 0em -0.062em 0.062em rgba(0, 0, 0, 0.25), 0em 0.062em 0.125em rgba(255, 255, 255, 0.94);
    -webkit-transition: var(--transition);
    -o-transition: var(--transition);
    transition: var(--transition);
    position: relative;
}

.theme-switch__container::before {
    content: "";
    position: absolute;
    z-index: 1;
    inset: 0;
    -webkit-box-shadow: 0em 0.05em 0.187em rgba(0, 0, 0, 0.25) inset, 0em 0.05em 0.187em rgba(0, 0, 0, 0.25) inset;
    box-shadow: 0em 0.05em 0.187em rgba(0, 0, 0, 0.25) inset, 0em 0.05em 0.187em rgba(0, 0, 0, 0.25) inset;
    border-radius: var(--container-radius)
}

.theme-switch__checkbox {
    display: none;
}

.theme-switch__circle-container {
    width: var(--circle-container-diameter);
    height: var(--circle-container-diameter);
    background-color: rgba(255, 255, 255, 0.1);
    position: absolute;
    left: var(--circle-container-offset);
    top: var(--circle-container-offset);
    border-radius: var(--container-radius);
    -webkit-box-shadow: inset 0 0 0 3.375em rgba(255, 255, 255, 0.1), inset 0 0 0 3.375em rgba(255, 255, 255, 0.1), 0 0 0 0.625em rgba(255, 255, 255, 0.1), 0 0 0 1.25em rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 0 0 3.375em rgba(255, 255, 255, 0.1), inset 0 0 0 3.375em rgba(255, 255, 255, 0.1), 0 0 0 0.625em rgba(255, 255, 255, 0.1), 0 0 0 1.25em rgba(255, 255, 255, 0.1);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-transition: var(--circle-transition);
    -o-transition: var(--circle-transition);
    transition: var(--circle-transition);
    pointer-events: none;
}

.theme-switch__sun-moon-container {
    pointer-events: auto;
    position: relative;
    z-index: 2;
    width: var(--sun-moon-diameter);
    height: var(--sun-moon-diameter);
    margin: auto;
    border-radius: var(--container-radius);
    background-color: var(--sun-bg);
    -webkit-box-shadow: 0.062em 0.062em 0.062em 0em rgba(254, 255, 239, 0.61) inset, 0em -0.062em 0.062em 0em #a1872a inset;
    box-shadow: 0.062em 0.062em 0.062em 0em rgba(254, 255, 239, 0.61) inset, 0em -0.062em 0.062em 0em #a1872a inset;
    -webkit-filter: drop-shadow(0.062em 0.125em 0.125em rgba(0, 0, 0, 0.25)) drop-shadow(0em 0.062em 0.125em rgba(0, 0, 0, 0.25));
    filter: drop-shadow(0.062em 0.125em 0.125em rgba(0, 0, 0, 0.25)) drop-shadow(0em 0.062em 0.125em rgba(0, 0, 0, 0.25));
    overflow: hidden;
    -webkit-transition: var(--transition);
    -o-transition: var(--transition);
    transition: var(--transition);
}

.theme-switch__moon {
    -webkit-transform: translateX(100%);
    -ms-transform: translateX(100%);
    transform: translateX(100%);
    width: 100%;
    height: 100%;
    background-color: var(--moon-bg);
    border-radius: inherit;
    -webkit-box-shadow: 0.062em 0.062em 0.062em 0em rgba(254, 255, 239, 0.61) inset, 0em -0.062em 0.062em 0em #969696 inset;
    box-shadow: 0.062em 0.062em 0.062em 0em rgba(254, 255, 239, 0.61) inset, 0em -0.062em 0.062em 0em #969696 inset;
    -webkit-transition: var(--transition);
    -o-transition: var(--transition);
    transition: var(--transition);
    position: relative;
}

.theme-switch__spot {
    position: absolute;
    top: 0.75em;
    left: 0.312em;
    width: 0.75em;
    height: 0.75em;
    border-radius: var(--container-radius);
    background-color: var(--spot-color);
    -webkit-box-shadow: 0em 0.0312em 0.062em rgba(0, 0, 0, 0.25) inset;
    box-shadow: 0em 0.0312em 0.062em rgba(0, 0, 0, 0.25) inset;
}

.theme-switch__spot:nth-of-type(2) {
    width: 0.375em;
    height: 0.375em;
    top: 0.937em;
    left: 1.375em;
}

.theme-switch__spot:nth-last-of-type(3) {
    width: 0.25em;
    height: 0.25em;
    top: 0.312em;
    left: 0.812em;
}

.theme-switch__clouds {
    width: 1.25em;
    height: 1.25em;
    background-color: var(--clouds-color);
    border-radius: var(--container-radius);
    position: absolute;
    bottom: -0.625em;
    left: 0.312em;
    -webkit-box-shadow: 0.937em 0.312em var(--clouds-color), -0.312em -0.312em var(--back-clouds-color), 1.437em 0.375em var(--clouds-color), 0.5em -0.125em var(--back-clouds-color), 2.187em 0 var(--clouds-color), 1.25em -0.062em var(--back-clouds-color), 2.937em 0.312em var(--clouds-color), 2em -0.312em var(--back-clouds-color), 3.625em -0.062em var(--clouds-color), 2.625em 0em var(--back-clouds-color), 4.5em -0.312em var(--clouds-color), 3.375em -0.437em var(--back-clouds-color), 4.625em -1.75em 0 0.437em var(--clouds-color), 4em -0.625em var(--back-clouds-color), 4.125em -2.125em 0 0.437em var(--back-clouds-color);
    box-shadow: 0.937em 0.312em var(--clouds-color), -0.312em -0.312em var(--back-clouds-color), 1.437em 0.375em var(--clouds-color), 0.5em -0.125em var(--back-clouds-color), 2.187em 0 var(--clouds-color), 1.25em -0.062em var(--back-clouds-color), 2.937em 0.312em var(--clouds-color), 2em -0.312em var(--back-clouds-color), 3.625em -0.062em var(--clouds-color), 2.625em 0em var(--back-clouds-color), 4.5em -0.312em var(--clouds-color), 3.375em -0.437em var(--back-clouds-color), 4.625em -1.75em 0 0.437em var(--clouds-color), 4em -0.625em var(--back-clouds-color), 4.125em -2.125em 0 0.437em var(--back-clouds-color);
    -webkit-transition: 0.5s cubic-bezier(0, -0.02, 0.4, 1.25);
    -o-transition: 0.5s cubic-bezier(0, -0.02, 0.4, 1.25);
    transition: 0.5s cubic-bezier(0, -0.02, 0.4, 1.25);
}

.theme-switch__stars-container {
    position: absolute;
    color: var(--stars-color);
    top: -100%;
    left: 0.312em;
    width: 2.75em;
    height: auto;
    -webkit-transition: var(--transition);
    -o-transition: var(--transition);
    transition: var(--transition);
}

/* Theme Switch Actions */
.theme-switch__checkbox:checked+.theme-switch__container {
    background-color: var(--container-night-bg);
}

.theme-switch__checkbox:checked+.theme-switch__container .theme-switch__circle-container {
    left: calc(100% - var(--circle-container-offset) - var(--circle-container-diameter));
}

.theme-switch__checkbox:checked+.theme-switch__container .theme-switch__circle-container:hover {
    left: calc(100% - var(--circle-container-offset) - var(--circle-container-diameter) - 0.187em)
}

.theme-switch__circle-container:hover {
    left: calc(var(--circle-container-offset) + 0.187em);
}

.theme-switch__checkbox:checked+.theme-switch__container .theme-switch__moon {
    -webkit-transform: translate(0);
    -ms-transform: translate(0);
    transform: translate(0);
}

.theme-switch__checkbox:checked+.theme-switch__container .theme-switch__clouds {
    bottom: -4.062em;
}

.theme-switch__checkbox:checked+.theme-switch__container .theme-switch__stars-container {
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}


/* Main Container */
.main-container {
    display: flex;
    min-height: calc(100vh - 70px - 200px);
    gap: 0;
}

/* Left Sidebar */
.left-sidebar {
    width: 18%;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    position: sticky;
    top: 0px;
    height: calc(100vh - 0px);
    overflow-y: auto;
    min-height: fit-content;
    animation: fadeInUp 0.8s ease-out;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    color: var(--primary-color);
    font-size: 1.4rem;
    font-weight: 600;
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: var(--bg-color);
    border-left-color: var(--primary-color);
}

.menu-item.active {
    background: rgba(25, 118, 210, 0.1);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

.menu-item i {
    font-size: 1.1rem;
    width: 20px;
}

.dropdown-arrow {
    margin-left: auto;
    transition: var(--transition);
}

.dropdown-item.active .dropdown-arrow {
    transform: rotate(180deg);
}

.sidebar-dropdown-content {
    max-height: 0;
    overflow: hidden;
    background: var(--bg-color);
    margin-left: 0;
    padding-left: 0;
    transition: max-height 0.3s ease-in-out;
}

.sidebar-dropdown-content.show {
    max-height: 500px;
    border-top: 1px solid var(--border-color);
}

.sub-menu-item {
    padding: 12px 20px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    border-left: 3px solid transparent;
    text-align: left;
    margin-left: 35px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sub-menu-item:hover {
    background: var(--card-bg);
    border-left-color: var(--accent-color);
}

.sub-menu-item.active {
    background: rgba(0, 200, 83, 0.1);
    border-left-color: var(--accent-color);
    color: var(--accent-color);
}

.sub-menu-item i {
    font-size: 1rem;
    width: 20px;
    color: var(--text-secondary);
}

.sub-menu-item.active i {
    color: var(--accent-color);
}

/* Resource List Items */
.resource-item {
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    border: 0px solid var(--border-color);
    background: var(--card-bg);
}

.resource-item:hover {
    background: var(--hover-color, rgba(25, 118, 210, 0.1));
    border-color: var(--primary-color);
}

.resource-item.active {
    background: rgba(25, 118, 210, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.resource-item h4 {
    margin: 0 0 8px 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.resource-item.active h4 {
    color: var(--primary-color);
}

.resource-item p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.resource-item.active p {
    color: var(--text-primary);
}

/* Light theme specific improvements for resource items */
[data-theme="light"] .resource-item {
    background: #ffffff;
    border-color: #e1e8ed;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .resource-item:hover {
    background: #f8f9fa;
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .resource-item.active {
    background: rgba(25, 118, 210, 0.05);
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.2);
}

[data-theme="light"] .resource-item h4 {
    color: #2c3e50;
}

[data-theme="light"] .resource-item p {
    color: #7f8c8d;
}

[data-theme="light"] .resource-item.active h4 {
    color: var(--primary-color);
    font-weight: 600;
}

[data-theme="light"] .resource-item.active p {
    color: #2c3e50;
}


/* Main Preview Container */
.main-preview {
    width: 52%;
    padding: 20px;
    background: var(--bg-color);
    animation: fadeInUp 0.8s ease-out forwards;
}

.preview-header {
    text-align: center;
    margin-bottom: 20px;
}

.preview-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 18, 18, 0.85);
    /* dark, semi-transparent */
    z-index: 10;
    pointer-events: none;
    transition: opacity 0.2s;
}

.preview-container {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    height: 600px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 20;
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

#pdfPreview {
    width: 100%;
    height: 100%;
    border: none;
    display: none;
}

.action-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 20px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #1565c0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--accent-color);
    color: white;
}

.btn-secondary:hover {
    background: #00a843;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* Right Sidebar */
.right-sidebar {
    width: 30%;
    background: var(--card-bg);
    border-left: 1px solid var(--border-color);
    position: sticky;
    top: 0px;
    height: calc(100vh - 0px);
    overflow-y: auto;
    animation: fadeInUp 0.8s ease-out forwards;
}

.search-container {
    position: relative;
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.search-container input {
    width: 100%;
    padding: 12px 40px 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.search-container i {
    position: absolute;
    right: 32px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.resource-list {
    padding: 20px 0;
}

.resource-item {
    padding: 15px 20px;
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
    border-bottom: 1px solid var(--border-color);
}

.resource-item:hover {
    background: var(--bg-color);
    border-left-color: var(--primary-color);
}

.resource-item.active {
    background: rgba(25, 118, 210, 0.1);
    border-left-color: var(--primary-color);
}

.resource-item h4 {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.resource-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

/* Footer */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-color);
    /* color: var(--text-secondary); */
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    background-color: #fff;
    color: black;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding: 10px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-hover);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    color: var(--text-primary);
    font-weight: 600;
}

.close {
    color: var(--text-secondary);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
}

.close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

.share-link-container {
    display: flex;
    gap: 10px;
    margin: 15px 0;
}

.share-link-container input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-color);
    color: var(--text-primary);
}

.share-options {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.share-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}

.share-btn.whatsapp {
    background: #25d366;
    color: white;
}

.share-btn.telegram {
    background: #0088cc;
    color: white;
}

.share-btn.email {
    background: #ea4335;
    color: white;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-container {
        flex-direction: column;
    }

    .left-sidebar,
    .right-sidebar {
        width: 100%;
        position: static;
        height: auto;
    }

    .main-preview {
        width: 100%;
    }

    .nav-menu {
        gap: 15px;
    }

    .nav-link {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background: rgba(25, 118, 210, 0.1);
    color: var(--primary-color);
}

/* Mobile Navigation Menu */
.mobile-nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    z-index: 999;
    opacity: 0;
    transform: translateY(-15px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 0 12px 12px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 20px;
    text-decoration: none;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
    font-weight: 500;
    font-size: 1rem;
}

.mobile-nav-link:hover {
    background: rgba(25, 118, 210, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

.mobile-nav-link.active {
    background: rgba(25, 118, 210, 0.15);
    color: var(--primary-color);
    transform: translateX(0);
    border-left: 4px solid var(--primary-color);
    font-weight: 600;
}

.mobile-nav-link:active {
    transform: translateX(5px) scale(0.98);
}

.mobile-nav-link:last-child {
    border-bottom: none;
}

.mobile-nav-link i {
    font-size: 1.1rem;
    width: 20px;
}

.mobile-nav-menu.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    text-align: center;
}

/* Mobile menu animation keyframes */
@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }

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

.mobile-nav-menu.show {
    animation: slideInDown 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Mobile Navigation Dropdown Styles */
.mobile-nav-dropdown {
    position: relative;
}

.mobile-dropdown-toggle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.mobile-dropdown-arrow {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    position: absolute;
    right: 25px;
}

.mobile-nav-dropdown.open .mobile-dropdown-arrow {
    transform: rotate(180deg);
}

.mobile-dropdown-menu {
    max-height: 0;
    overflow: hidden;
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.mobile-nav-dropdown.open .mobile-dropdown-menu {
    max-height: 200px;
    opacity: 1;
}

.mobile-dropdown-item {
    display: block;
    padding: 15px 40px;
    text-decoration: none;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    font-weight: 400;
    font-size: 0.95rem;
}

.mobile-dropdown-item:hover {
    background: rgba(25, 118, 210, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

.mobile-dropdown-item.active {
    color: var(--primary-color);
    background: rgba(25, 118, 210, 0.15);
    border-left: 4px solid var(--primary-color);
    transform: translateX(3px);
    font-weight: 600;
}

.mobile-dropdown-item.disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.mobile-dropdown-item.disabled:hover {
    background: none;
    color: var(--text-secondary);
    transform: none;
}

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

/* Blur Overlay for Mobile Dropdown */
.blur-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 998;
    opacity: 0;
    transition: all 0.3s ease;
}

.blur-overlay.show {
    display: block;
    opacity: 1;
}

/* Ensure navbar stays above blur overlay */
.navbar {
    position: relative;
    z-index: 1000;
}

/* Blur content when mobile menu is open */
body.mobile-menu-open .main-container,
body.mobile-menu-open .footer {
    filter: blur(3px);
    pointer-events: none;
    transition: filter 0.3s ease;
    user-select: none;
}

body.mobile-menu-open .navbar {
    filter: none;
    pointer-events: auto;
    user-select: auto;
}

/* Prevent scrolling when mobile menu is open */
body.mobile-menu-open {
    overflow: hidden;
}

/* Hide mobile right sidebar elements on desktop */
.mobile-right-sidebar-toggle {
    display: none;
}

.mobile-right-sidebar,
.mobile-right-sidebar-overlay {
    display: none;
}

@media (max-width: 768px) {
    /* Show mobile elements only on mobile */
    .mobile-right-sidebar,
    .mobile-right-sidebar-overlay {
        display: block;
    }
    .nav-container {
        padding: 0 15px;
    }

    .nav-logo {
        font-size: 1.2rem;
    }

    .nav-logo i {
        font-size: 2rem;
    }

    .nav-menu {
        gap: 15px;
    }

    /* Hide desktop navigation links and profile dropdown on mobile */
    .nav-link {
        display: none;
    }

    .profile-dropdown {
        display: none;
    }

    /* Show mobile menu toggle and keep dark mode toggle */
    .mobile-menu-toggle {
        display: block;
    }

    .theme-switch {
        display: block;
        order: -1;
        /* Move theme switch to the left of mobile menu toggle */
        --toggle-size: 16px;
    }

    .preview-container {
        height: 400px;
    }

    .action-buttons {
        flex-direction: row;
        align-items: center;
    }

    .btn {
        width: 200px;
        justify-content: center;
    }

    /* Mobile container optimizations - excluding PDF preview */
    .main-container {
        min-height: calc(100vh - 70px - 150px);
    }

    .left-sidebar {
        padding: 0;
    }

    .sidebar-header {
        padding: 15px;
    }

    .sidebar-header h2 {
        font-size: 1.3rem;
    }

    .sidebar-menu {
        padding: 15px 0;
    }

    .menu-item {
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    .main-preview {
        padding: 15px;
    }

    .resource-header {
        padding: 15px;
        margin-bottom: 15px;
    }

    .resource-header h1 {
        font-size: 1.4rem;
    }

    .resource-header p {
        font-size: 0.85rem;
    }

    .right-sidebar {
        padding: 15px;
    }

    .sidebar-section {
        margin-bottom: 15px;
        padding: 15px;
    }

    .sidebar-section h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }

    .resource-item {
        padding: 10px;
        margin-bottom: 8px;
    }

    .resource-item h4 {
        font-size: 0.9rem;
    }

    .resource-item p {
        font-size: 0.8rem;
    }

    /* Mobile layout adjustments */
    .left-sidebar {
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .main-container {
        flex-direction: column;
    }

    .main-preview {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .preview-header h1 {
        font-size: 1.2rem;
    }

    .right-sidebar {
        width: 100%;
        position: static;
        height: auto;
        border-left: none;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        grid-template-areas:
            "about about"
            "quick-links legal"
            "social social";
        gap: 20px;
        text-align: center;
        padding: 20px 15px 15px;
    }

    /* Mobile-specific footer layout for Quick Links and Legal alignment */
    .footer-container .footer-section:nth-child(1) {
        grid-area: about;
    }

    .footer-container .footer-section:nth-child(2) {
        grid-area: quick-links;
        text-align: center;
    }

    .footer-container .footer-section:nth-child(3) {
        grid-area: legal;
        text-align: center;
    }

    .footer-container .footer-section:nth-child(4) {
        grid-area: social;
        /* transform: translate(90px, -85px); */
    }

    .social-links {
        justify-content: center;
    }

    /* Mobile footer optimizations */
    .footer-section h3 {
        font-size: 1rem;
        margin-bottom: 10px;
    }

    .footer-section p {
        font-size: 0.85rem;
        line-height: 1.4;
        margin-bottom: 15px;
    }

    .footer-section ul li {
        margin-bottom: 6px;
    }

    .footer-section ul li a {
        font-size: 0.85rem;
    }

    .social-links {
        gap: 12px;
        margin-top: 10px;
    }

    .social-links a {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }

    .footer-bottom {
        padding: 15px;
        font-size: 0.8rem;
    }

    /* Mobile-specific sidebar improvements */
    .sub-menu-item {
        margin-left: 20px;
        padding: 10px 15px;
        font-size: 0.85rem;
    }

    .sidebar-dropdown-content {
        border-left: 2px solid var(--accent-color);
        margin-left: 10px;
        border-top: none;
    }

    .dropdown-toggle {
        display: none;
    }

    /* Mobile Right Sidebar Toggle Button */
    .mobile-right-sidebar-toggle {
        display: block;
        background: var(--primary-color);
        color: white;
        border: none;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        cursor: pointer;
        transition: var(--transition);
        margin-right: 15px;
        flex-shrink: 0;
    }

    .mobile-right-sidebar-toggle:hover {
        background: var(--accent-color);
        transform: scale(1.05);
    }

    .mobile-right-sidebar-toggle i {
        font-size: 1rem;
    }

    /* Hide desktop right sidebar on mobile */
    .right-sidebar {
        display: none !important;
    }

    /* Mobile Right Sidebar */
    .mobile-right-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 85%;
        max-width: 350px;
        height: 100vh;
        background: var(--card-bg);
        border-right: 1px solid var(--border-color);
        z-index: 1002;
        transition: left 0.3s ease;
        overflow-y: auto;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        direction: rtl;
    }

    .mobile-right-sidebar.active {
        left: 0 !important;
    }

    .mobile-sidebar-content {
        direction: ltr;
    }

    .mobile-sidebar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        background: var(--bg-color);
        direction: ltr;
    }

    .mobile-sidebar-header h3 {
        font-size: 1.2rem;
        color: var(--text-primary);
        margin: 0;
    }

    .mobile-sidebar-close {
        background: none;
        border: none;
        color: var(--text-secondary);
        font-size: 1.2rem;
        cursor: pointer;
        padding: 5px;
        border-radius: 50%;
        width: 35px;
        height: 35px;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .mobile-sidebar-close:hover {
        background: var(--border-color);
        color: var(--text-primary);
    }

    .mobile-sidebar-content {
        padding: 5px;
    }

    .mobile-sidebar-content .search-container {
        position: relative;
        margin-bottom: -5px;
    }

    .mobile-sidebar-content .search-container input {
        width: 100%;
        padding: 12px 40px 12px 15px;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        background: var(--bg-color);
        color: var(--text-primary);
        font-size: 0.9rem;
        transition: var(--transition);
    }

    .mobile-sidebar-content .search-container input:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
    }

    .mobile-sidebar-content .search-container i {
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
        color: var(--text-secondary);
        font-size: 0.9rem;
    }
    .search-container {
    padding: 5px;
}

    .mobile-sidebar-content .resource-list {
        max-height: calc(100vh - 220px);
        overflow-y: auto;
    }
    .resource-list {
    padding: 20px 0 30px 0;
}

    /* Mobile Right Sidebar Overlay */
    .mobile-right-sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1001;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .mobile-right-sidebar-overlay.active {
        opacity: 1 !important;
        visibility: visible !important;
    }

    /* Adjust sidebar header layout for mobile */
    .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: flex-start;
    }

    .sidebar-header h2 {
        margin: 0;
        flex: 1;
    }
}

/* Extra small screens footer optimization */
@media (max-width: 480px) {
    .footer-container {
        gap: 15px;
        padding: 15px 10px 10px;
    }

    /* Extra small screens container optimizations */
    .main-container {
        min-height: calc(100vh - 70px - 120px);
    }

    .sidebar-header {
        padding: 12px;
    }

    .sidebar-header h2 {
        font-size: 1.2rem;
    }

    .sidebar-menu {
        padding: 12px 0;
    }

    .menu-item {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .main-preview {
        padding: 12px;
    }

    .resource-header {
        padding: 12px;
        margin-bottom: 12px;
    }

    .resource-header h1 {
        font-size: 1.2rem;
    }

    .resource-header p {
        font-size: 0.8rem;
    }

    .right-sidebar {
        padding: 12px;
    }

    .sidebar-section {
        margin-bottom: 12px;
        padding: 12px;
    }

    .sidebar-section h3 {
        font-size: 1rem;
        margin-bottom: 8px;
    }

    .resource-item {
        padding: 8px;
        margin-bottom: 6px;
    }

    .resource-item h4 {
        font-size: 0.85rem;
    }

    .resource-item p {
        font-size: 0.75rem;
    }


    .btn {
        width: 180px;
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .footer-section h3 {
        font-size: 0.9rem;
        margin-bottom: 8px;
    }

    .footer-section p {
        font-size: 0.8rem;
        line-height: 1.3;
        margin-bottom: 12px;
    }

    .footer-section ul li {
        margin-bottom: 4px;
    }

    .footer-section ul li a {
        font-size: 0.8rem;
    }

    .social-links {
        gap: 10px;
        margin-top: 8px;
    }

    .social-links a {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }

    .footer-bottom {
        padding: 12px;
        font-size: 0.75rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--text-primary);
    color: var(--card-bg);
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1001;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.85rem;
}

/* Loading Animation */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.fa-spin {
    animation: spin 1s linear infinite;
}

/* Smooth Transitions */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Conversation title ellipsis and overflow fix */
.conversation-title {
    flex: 1 1 0%;
    min-width: 0;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-all;
    display: block;
}

/* Prevent horizontal scroll in the conversations list and sidebar */
#conversationsList,
.sidebar,
.conversations-section {
    overflow-x: hidden !important;
}

/* Ensure conversation items never cause horizontal scroll */
.conversation-item {
    display: flex;
    align-items: center;
    min-width: 0;
}

/* Ensure the sidebar section containing conversations does not scroll horizontally */
.conversations-section {
    min-width: 0;
}