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

/* Font and color variables */
:root {
    --primary-color: #1a1a1a; /* American minimal main color: dark gray */
    --accent-color: #0066cc; /* American classic blue */
    --bg-color: #ffffff;
    --text-color: #333333;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; /* American minimal sans-serif font */
}

/* Base styles */
html {
    height: 100%;
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* Prevent flickering when dynamically loading content */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
}

body.content-loaded::before {
    opacity: 0;
}

/* Container styles */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Header styles */
.header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    z-index: 1000;
    width: 100vw;
    left: 0;
    right: 0;
    padding: 1rem 0; /* Add vertical padding to increase height */
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.header-content {
    display: flex;
    justify-content: space-between; /* Change to justify between */
    align-items: center;
    width: 100%;
    padding: 0 20px;
    gap: 2rem; /* Add spacing between logo and nav */
}


.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    margin-right: 0.5rem;
}


/* .nav {
    display: flex;
    gap: 2rem;
    flex: 1; 
} */

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent-color);
}

/* Donate button styles */
.donate-btn {
    background-color: var(--accent-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.3s ease;
    text-decoration: none; /* Ensure no underline */
    white-space: nowrap; /* Prevent text wrapping */
    margin-right: 10px; /* Add right margin */
}

/* Right-align donate button on desktop */
@media (min-width: 769px) {
    .nav {
        display: flex;
        gap: 2rem;
        flex: 1;
        align-items: center;
    }
    
    .nav > .donate-btn {
        margin-left: auto;
    }
}

.donate-btn:hover {
    background-color: #0052a3;
    color: white !important;
}

/* Donate button styles in mobile menu */
.mobile-nav .donate-btn {
    display: block;
    padding: 0.75rem 1rem;
    margin: 0.25rem 0.5rem;
    border-radius: 4px;
    text-decoration: none;
    background-color: var(--accent-color);
    color: white;
    width: calc(100% - 1rem); /* Full width considering margin */
    text-align: center;
}

.mobile-nav .donate-btn:hover {
    background-color: var(--light-gray);
    color: var(--accent-color);
}

/* Language switcher styles */
.language-switcher {
    position: relative;
    display: inline-block;
}

.language-btn {
    background-color: var(--light-gray);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.3s ease;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    margin-right: 10px;
    height: 41px;
    line-height: 41px;
}

.language-btn:hover {
    background-color: var(--border-color);
}

.language-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 1000;
    margin-top: 5px;
}

.language-dropdown.show {
    display: block;
}

.language-option {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s ease;
    white-space: nowrap;
}

.language-option:hover {
    background-color: var(--light-gray);
    color: var(--accent-color);
}

/* Highlight current language in dropdown */
.language-option.active,
.mobile-language-option.active {
    background-color: var(--light-gray) !important;
    color: var(--accent-color) !important;
    font-weight: 600 !important;
}

/* Main content styles */
.main {
    width: 100vw;
    left: 0;
    right: 0;
    padding-top: 75px; /* Add padding to avoid content being covered by fixed header */
}

/* Hero section styles */
.hero {
    width: 100vw;
    left: 0;
    right: 0;
    padding: 2rem 0; /* Adjusted padding to work with fixed header */
    margin: 0;
    text-align: center;
    background-color: var(--light-gray);
}

.hero .container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

/* Button styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #0052a3;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: #333333;
    transform: translateY(-2px);
}

/* Section styles */
.section {
    width: 100vw;
    left: 0;
    right: 0;
    padding: 2rem 0;
    margin: 0;
}

.section .container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.section-accent {
    background-color: var(--light-gray);
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
    line-height: 1.2;
}

/* Tools grid styles */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
    width: 100%;
    align-items: stretch;
}

/* Tool card link styles */
.tool-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    width: 100%;
    min-width: 0;
}

.tool-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 220px;
    box-sizing: border-box;
}

.tool-card-link:hover .tool-card {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.tool-icon-img {
    width: 48px;
    height: 48px;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}

/* Font Awesome icon styles for tool cards */
.tool-icon i {
    font-size: 48px;
    color: var(--accent-color);
    display: block;
    width: 48px;
    height: 48px;
    text-align: center;
    line-height: 48px;
}

.tool-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    width: 100%;
    word-wrap: break-word;
}

.tool-description {
    font-size: 0.9rem;
    color: #666666;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    -moz-line-clamp: 3;
    -moz-box-orient: vertical;
    -ms-line-clamp: 3;
    -ms-box-orient: vertical;
    line-clamp: 3;
    box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
    flex-grow: 1;
    margin-bottom: 1rem;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* CTA section styles */
.cta-section {
    background: linear-gradient(135deg, #0066cc, rgba(0, 102, 204, 0.8));
    border-radius: 0; /* Remove rounded corners */
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    padding: 2rem;
    margin-bottom: 4rem;
    color: white;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .cta-section {
        padding: 3rem;
    }
}

.cta-section h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: white;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.cta-section .flex {
    display: flex;
}

.cta-section .flex-col {
    flex-direction: column;
}

.cta-section .sm-flex-row {
    display: flex;
    flex-direction: row;
}

/* Responsive: stack three feature modules vertically on small screens */
@media (max-width: 767px) {
    .cta-section .sm-flex-row {
        flex-direction: column;
    }
}

@media (min-width: 768px) {
    .cta-section .sm-flex-row {
        flex-direction: row;
    }
}

.cta-section .gap-4 {
    gap: 1rem;
}

/* Increase element spacing when stacked vertically on mobile */
@media (max-width: 767px) {
    .cta-section .gap-4 {
        gap: 1.5rem; /* Increase mobile spacing for better readability */
    }
}

.cta-section .justify-center {
    justify-content: center;
}

.cta-section .mb-8 {
    margin-bottom: 2rem;
}

.cta-section .items-center {
    align-items: center;
}

/* Center align content when stacked vertically on mobile */
@media (max-width: 767px) {
    .cta-section .items-center {
        align-items: center;
    }
}

.cta-section .text-center {
    text-align: center;
}

.cta-section .max-w-4xl {
    max-width: 1440px;
    margin: 0 auto;
}

.cta-section .mx-auto {
    margin: 0 auto;
}

.cta-section .bg-white-10 {
    background-color: rgba(255, 255, 255, 0.1);
    color: white; /* Ensure text color is white */
    width: 100%; /* Ensure full container width on mobile */
}

/* Adjust feature box background width on desktop */
@media (min-width: 768px) {
    .cta-section .bg-white-10 {
        width: auto;
        max-width: 300px; /* Limit desktop background width */
    }
}

.cta-section i {
    color: white !important; /* Force icon to be white */
    display: inline-block; /* Ensure icon displays correctly */
}

.cta-section .fa-solid {
    color: white !important; /* Specific styles for FontAwesome icons */
}

.cta-section .rounded-lg {
    border-radius: 0.5rem;
}

.cta-section .py-3 {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.cta-section .px-6 {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* Adjust padding on mobile to fit screen */
@media (max-width: 767px) {
    .cta-section .px-6 {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

.cta-section .gap-3 {
    gap: 0.75rem;
}

.cta-section .text-2xl {
    font-size: 1.5rem;
    color: white; /* Ensure icon color is white */
}

.cta-section .mt-4 {
    margin-top: 1rem;
}

.cta-section .text-sm {
    font-size: 0.875rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: white;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 700;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1.1rem;
    border: none;
    text-align: center;
}

.cta-button:hover {
    background-color: #f0f0f0;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Footer styles */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 3rem 0;
    width: 100vw;
    left: 0;
    right: 0;
    bottom: 0;
}

.footer-content {
    width: 100%;
    padding: 0 20px;
}

.footer-sections {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1440px;
    margin: 0 auto;
    width: 100%;
    gap: 2rem;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-section h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-link {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: white;
}

.footer-copyright {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    width: 100%;
    max-width: 1440px;
    margin: 2rem auto 0 auto;
}

.footer-copyright p {
    color: #aaa;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Navigation dropdown menu styles */
.pdf-convert-menu {
    position: relative;
    display: inline-block;
}

/* Create a transparent connection area to prevent menu from disappearing when mouse moves out */
.pdf-convert-menu::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 20px; /* 20px hover area */
    z-index: 999;
}

.pdf-convert-menu > a.nav-link {
    /* Ensure first-level menu items match regular navigation item styles */
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0; /* Remove extra padding */
    margin: 0;  /* Remove extra margin */
}

.pdf-convert-menu > a.nav-link:hover {
    color: var(--accent-color);
}

.pdf-submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    border-radius: 4px;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    min-width: 400px;
    z-index: 1000;
    overflow: hidden;
    margin-top: 0.5rem; /* Add some space from top menu */
}

.pdf-convert-menu:hover .pdf-submenu {
    display: flex; /* Use flex layout to ensure two columns side by side */
}

.submenu-column {
    display: flex;
    flex-direction: column;
    width: 50%;
    padding: 0.5rem 0;
}

.submenu-group {
    padding: 0.5rem 0;
    width: 100%;
    margin-bottom: 0.5rem; /* Add bottom margin between groups */
}

.group-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: #666;
    padding: 0.5rem 1rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.separate-underline {
    position: relative;
    padding-left: 1rem;
    padding-right: 1rem;
    padding-bottom: 0.5rem;
}

.separate-underline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 1px;
    background-color: var(--border-color);
}

.submenu-items {
    display: flex;
    flex-direction: column;
    padding: 0 0.5rem;
}

.submenu-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    color: var(--primary-color);
    text-decoration: none;
    transition: background-color 0.3s ease;
    margin: 0.25rem 0;
    white-space: nowrap; /* Prevent text wrapping */
    overflow: hidden;
    text-overflow: ellipsis; /* Show ellipsis for overflow */
}

.submenu-item:hover {
    background-color: #f5f5f5;
}

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    line-height: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
    color: white;
    flex-shrink: 0;
}

.icon.jpg {
    background-color: #f97316; /* Orange */
}

.icon.word {
    background-color: #3b82f6; /* Blue */
}

.icon.ppt {
    background-color: #ef4444; /* Red */
}

.icon.excel {
    background-color: #10b981; /* Green */
}

.icon.html {
    background-color: #8b5cf6; /* Purple */
}

.icon.pdfa {
    background-color: #6366f1; /* Indigo */
}

/* New icon styles */
.icon.text {
    background-color: #3b82f6; /* Blue */
}

.icon.encoding {
    background-color: #8b5cf6; /* Purple */
}

.icon.formatter {
    background-color: #10b981; /* Green */
}

.icon.code {
    background-color: #ef4444; /* Red */
}

.icon.seo {
    background-color: #f59e0b; /* Orange */
}

.icon.writing {
    background-color: #6366f1; /* Indigo */
}

.icon.file {
    background-color: #06b6d4; /* Cyan */
}

.icon.compare {
    background-color: #84cc16; /* Yellow-green */
}

.icon.generator {
    background-color: #ec4899; /* Pink */
}

.icon.web {
    background-color: #8b5cf6; /* Purple */
}

.icon.calculator {
    background-color: #14b8a6; /* Teal */
}

.icon.emoji {
    background-color: #fbbf24; /* Yellow */
}

/* Responsive design */
@media (max-width: 1200px) {
    .tools-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .cta-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .cta-features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .section {
        padding: 2rem 0;
    }
}

/* Hamburger menu button styles */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent !important;
    border: none !important;
    cursor: pointer;
    padding: 0 !important;
    box-sizing: border-box;
    outline: none !important;
    color: var(--text-color) !important;
    text-decoration: none !important;
    font-weight: normal !important;
    gap: 0 !important;
    transition: none !important;
    margin: 0 !important;
    position: relative;
    z-index: 1001;
}

.hamburger-menu span {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
    transform-origin: center;
}

/* Hamburger menu active state styles */
.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Ensure hamburger menu button is not affected by other styles */
/* Remove all possible focus outlines and style inheritance */
.hamburger-menu:focus,
.hamburger-menu:active,
.hamburger-menu:focus-within,
.hamburger-menu:hover,
.hamburger-menu:visited,
.hamburger-menu:focus-visible {
    outline: none !important;
    box-shadow: none !important;
    -webkit-tap-highlight-color: transparent !important;
    background: transparent !important;
    border: none !important;
    color: var(--text-color) !important;
    text-decoration: none !important;
    font-weight: normal !important;
}

/* Ensure internal elements of hamburger menu button are not affected */
.hamburger-menu * {
    outline: none !important;
    box-shadow: none !important;
    -webkit-tap-highlight-color: transparent !important;
    background: transparent !important;
    border: none !important;
    color: var(--text-color) !important;
    text-decoration: none !important;
    font-weight: normal !important;
}

/* Ensure span elements of hamburger menu button are not affected */
.hamburger-menu span {
    background-color: var(--text-color) !important;
    outline: none !important;
    box-shadow: none !important;
    border: none !important;
    color: var(--text-color) !important;
    text-decoration: none !important;
    font-weight: normal !important;
    display: block !important;
    width: 100% !important;
    height: 2px !important;
    padding: 0 !important;
    margin: 0 !important;
    gap: 0 !important;
}

/* Remove default focus outline from all buttons */
button:focus,
button:active,
button:hover,
button:focus-within,
button:focus-visible {
    outline: none !important;
    box-shadow: none !important;
    -webkit-tap-highlight-color: transparent !important;
}

/* Remove click highlight from all elements */
* {
    -webkit-tap-highlight-color: transparent;
}

/* Mobile side menu styles */
.mobile-nav {
    position: fixed;
    top: 0;
    left: -300px; /* Default hidden outside screen */
    width: 280px;
    height: 100vh;
    background-color: var(--bg-color);
    z-index: 1001;
    transition: left 0.3s ease;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.mobile-nav.active {
    left: 0; /* Show menu */
}

/* Disable page scrolling when side menu is active */
body.nav-open {
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    position: fixed;
    top: 0;
    left: 0;
}

.mobile-nav-content {
    padding: 2rem 0 2rem 0;
}

.mobile-nav-content > a {
    margin: 0 1rem;
}

.mobile-nav-content > .mobile-pdf-convert-menu {
    margin: 0 1rem;
}

.mobile-nav .nav-link {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    border-radius: 4px;
    margin: 0.25rem 0.5rem;
}

.mobile-nav .nav-link:hover {
    color: var(--accent-color);
    background-color: var(--light-gray);
}

/* Mobile PDF conversion menu styles */
.mobile-pdf-convert-menu {
    margin: 0.25rem 0;
}

.mobile-nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    border-radius: 4px;
    background-color: transparent;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.mobile-nav-link:hover {
    color: var(--accent-color);
    background-color: var(--light-gray);
}

.dropdown-arrow {
    transition: transform 0.3s ease;
}

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

.mobile-pdf-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: var(--light-gray);
    margin: 0;
}

.mobile-pdf-submenu.expanded {
    max-height: 1000px; /* Sufficient to accommodate all submenu items */
    overflow-y: auto;
}

.mobile-submenu-group {
    padding: 0;
}

.mobile-group-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: #666;
    padding: 0.5rem 1rem;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}

.mobile-submenu-items {
    display: flex;
    flex-direction: column;
    padding: 0 0 0.5rem 0;
}

.mobile-submenu-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    color: var(--primary-color);
    text-decoration: none;
    transition: background-color 0.3s ease;
    margin: 0.25rem 0;
    border-radius: 4px;
}

.mobile-submenu-item:hover {
    background-color: #eaeaea;
}

/* Overlay styles */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
}

.mobile-nav-overlay.active {
    display: block;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        padding: 0 1rem;
    }
    
    .hamburger-menu {
        display: flex;
    }
    
    .nav {
        display: none;
    }
    
    .logo {
        order: 1;
    }
    
    .hamburger-menu {
        order: 2;
    }
    
    .mobile-nav {
        order: 3;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .cta-features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .section {
        padding: 2rem 0;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

/* Mobile language switcher styles */
.mobile-language-switcher {
    display: none;
    position: relative;
}

.mobile-language-btn {
    background-color: var(--light-gray);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.3s ease;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    font-size: 0.9rem;
}

.mobile-language-btn:hover {
    background-color: var(--border-color);
}

.mobile-language-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 150px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 1000;
    margin-top: 5px;
}

.mobile-language-dropdown.show {
    display: block;
}

.mobile-language-option {
    display: block;
    padding: 0.6rem 0.8rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s ease;
    white-space: nowrap;
    font-size: 0.9rem;
}

.mobile-language-option:hover {
    background-color: var(--light-gray);
    color: var(--accent-color);
}

@media (max-width: 768px) {
    .mobile-language-switcher {
        display: block;
        order: 2;
        margin: 0 0.5rem;
    }
    
    .logo {
        order: 1;
    }
    
    .hamburger-menu {
        order: 3;
    }
}