/* ===== CSS Variables ===== */
:root {
    --primary-color: #6F56EC;
    --secondary-color: #D61C4E;
    --white: #FFFFFF;
    --light-bg: #F5F7FA;
    --dark-bg: #1A1D29;
    --text-dark: #2C3E50;
    --text-light: #6C757D;
    --text-lighter: #95A5A6;
    --border-color: #E1E8ED;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
body.dark-mode {
    --white: #1A1D29;
    --light-bg: #0F1117;
    --dark-bg: #FFFFFF;
    --text-dark: #E8EAED;
    --text-light: #B8BBBE;
    --text-lighter: #8A8D91;
    --border-color: #2D3139;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header Styles ===== */
.header {
    background-color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.logo-text {
    color: var(--text-dark);
    font-size: 1.5rem;
    font-weight: 700;
}

.desktop-nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Dropdown Menu Styles */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.dropdown-toggle:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.dropdown-toggle .fa-chevron-down {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle .fa-chevron-down {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 280px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1001;
    margin-top: 0.5rem;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

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

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

.dropdown-item i {
    width: 20px;
    font-size: 1rem;
    color: var(--text-light);
    transition: var(--transition);
}

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

/* Dark Mode Toggle */
.dark-mode-toggle {
    background: none;
    border: 2px solid var(--border-color);
    color: var(--text-dark);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.1rem;
}

.dark-mode-toggle:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

body.dark-mode .dark-mode-toggle i::before {
    content: "\f185"; /* sun icon */
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ===== Mobile Sidebar ===== */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.menu-overlay.active {
    display: block;
    opacity: 1;
}

.mobile-sidebar {
    position: fixed;
    left: -300px;
    top: 0;
    width: 280px;
    height: 100vh;
    background-color: var(--white);
    z-index: 1999;
    transition: left 0.3s ease;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.mobile-sidebar.active {
    left: 0;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-logo i {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.sidebar-logo span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    padding: 1rem 0;
}

.sidebar-nav .nav-link {
    padding: 1rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-nav .nav-link i {
    width: 24px;
    font-size: 1.1rem;
    color: var(--text-light);
}

.sidebar-nav .nav-link:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.sidebar-nav .nav-link:hover i {
    color: var(--primary-color);
}

/* ===== Main Content ===== */
.main-content {
    padding: 3rem 0;
}

/* ===== Quick Links Section (Desktop Only) ===== */
.quick-links-section {
    margin-bottom: 3rem;
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.quick-link-card {
    background: var(--white);
    padding: 1.5rem 1rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    text-align: center;
}

.quick-link-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.quick-link-icon {
    width: 56px;
    height: 56px;
    background-color: var(--light-bg);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition);
}

.quick-link-card:hover .quick-link-icon {
    background-color: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.quick-link-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.3;
}

/* ===== Converter Section ===== */
.converter-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
}

.converter-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.converter-box {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.box-header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1.1rem;
}

.box-header-left i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.char-count {
    font-size: 0.9rem;
    color: var(--text-lighter);
    font-weight: 500;
}

.text-input,
.text-output {
    width: 100%;
    min-height: 320px;
    padding: 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1.05rem;
    font-family: 'Nirmala UI', 'Mangal', 'Devanagari MT', sans-serif;
    resize: vertical;
    transition: var(--transition);
    background-color: var(--white);
    color: var(--text-dark);
    line-height: 1.8;
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(111, 86, 236, 0.1);
}

.text-output {
    background-color: var(--light-bg);
    cursor: default;
}

.converter-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
}

.arrow-circle {
    width: 56px;
    height: 56px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* ===== Action Buttons ===== */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--white);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
}

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

.btn:active {
    transform: translateY(0);
}

.btn i {
    font-size: 1.1rem;
}

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

.btn-copy:hover {
    background-color: #5d46d4;
}

.btn-clear {
    background-color: var(--text-light);
}

.btn-clear:hover {
    background-color: #5a6268;
}

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

.btn-download:hover {
    background-color: #b91640;
}

.btn-whatsapp {
    background-color: #25D366;
}

.btn-whatsapp:hover {
    background-color: #1fb855;
}

/* ===== Features Section ===== */
.features-section {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 2.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background-color: var(--light-bg);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Content Section ===== */
.content-section {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.content-article h2 {
    color: var(--text-dark);
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
}

.content-article h2:first-child {
    margin-top: 0;
}

.content-article p {
    color: var(--text-dark);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
    text-align: justify;
}

/* ===== Mega Footer ===== */
.mega-footer {
    background-color: var(--dark-bg);
    color: var(--white);
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

body.dark-mode .mega-footer {
    background-color: #0D0F14;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
    font-weight: 700;
    color: var(--white);
}

body.dark-mode .footer-column h3 {
    color: #E8EAED;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a i {
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

body.dark-mode .footer-links a:hover {
    color: #E8EAED;
}

/* ===== Copyright Footer ===== */
.copyright-footer {
    background-color: var(--dark-bg);
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    padding: 1.5rem 0;
}

body.dark-mode .copyright-footer {
    background-color: rgba(0, 0, 0, 0.5);
}

.copyright-footer p {
    margin: 0;
    font-size: 0.95rem;
}

.copyright-footer i {
    color: var(--secondary-color);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ===== Scroll to Top Button ===== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
}

.scroll-top-btn:hover {
    transform: translateY(-5px);
    background-color: #5d46d4;
}

.scroll-top-btn.visible {
    display: flex;
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .quick-links-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }
    
    /* Hide Quick Links on Tablet and Mobile */
    .quick-links-section {
        display: none;
    }

    .converter-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .arrow-circle {
        transform: rotate(90deg);
    }

    .text-input,
    .text-output {
        min-height: 250px;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .converter-section,
    .content-section {
        padding: 1.5rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .content-article h2 {
        font-size: 1.5rem;
    }

    .content-article p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.25rem;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

    .scroll-top-btn {
        width: 48px;
        height: 48px;
        bottom: 20px;
        right: 20px;
    }

    .converter-section {
        padding: 1.25rem;
    }
}