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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Header Styles */
.main-header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin: -20px -20px 20px -20px;
    border-radius: 10px 10px 0 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    flex-wrap: wrap;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: #2196F3;
    display: flex;
    align-items: center;
    gap: 10px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 5px;
    align-items: center;
}

.main-nav ul li a {
    text-decoration: none;
    color: #333;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
    background-color: #2196F3;
    color: white;
}

.auth-container {
    display: flex;
    align-items: center;
}

#login-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-btn {
    padding: 8px 16px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.auth-btn:hover {
    background-color: #0b7dda;
}

#user-display {
    font-weight: 500;
    color: #333;
}

/* Main Content */
h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 2.5rem;
}

h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

/* Mode Selector */
.mode-selector {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.mode-btn {
    padding: 12px 24px;
    background-color: #f0f0f0;
    border: 2px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.mode-btn:hover {
    background-color: #e0e0e0;
    border-color: #2196F3;
}

.mode-btn.active {
    background-color: #2196F3;
    color: white;
    border-color: #2196F3;
}

/* Premium Banner */
.premium-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.premium-info h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.premium-info p {
    margin-bottom: 15px;
    opacity: 0.95;
}

.premium-features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    list-style: none;
    margin: 15px 0;
}

.premium-features-list li {
    padding-left: 25px;
    position: relative;
}

.premium-features-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    font-weight: bold;
    color: #4CAF50;
}

.premium-btn {
    padding: 12px 30px;
    background-color: white;
    color: #667eea;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.premium-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* Dictionary Toggle */
.dictionary-toggle-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Language Selector */
.language-selector-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.language-selector-container label {
    font-weight: 500;
    color: #333;
}

#language-select {
    padding: 10px 15px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    background-color: white;
    transition: border-color 0.3s ease;
}

#language-select:focus {
    outline: none;
    border-color: #2196F3;
}

/* Filters Container */
.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
    min-width: 120px;
}

.filter-group label {
    font-weight: 500;
    color: #333;
    font-size: 13px;
    white-space: nowrap;
}

.filter-group input,
.filter-group select {
    padding: 8px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    background-color: white;
    height: 38px;
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: #2196F3;
}

/* Input Container */
.input-container {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    justify-content: center;
}

.input-container label {
    font-weight: 500;
    color: #333;
    font-size: 18px;
}

.input-container input {
    padding: 12px 20px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    width: 150px;
    transition: border-color 0.3s ease;
}

.input-container input:focus {
    outline: none;
    border-color: #2196F3;
}

#generate-btn {
    padding: 12px 40px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s ease;
}

#generate-btn:hover {
    background-color: #0b7dda;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3);
}

/* Results Container */
.results-container {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    min-height: 100px;
}

#results {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.word-item {
    background-color: white;
    padding: 15px;
    border-radius: 5px;
    border-left: 4px solid #2196F3;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease;
}

.word-item:hover {
    transform: translateX(5px);
}

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

.word-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
}

.word-info {
    font-size: 1rem;
    color: #666;
    font-style: italic;
}

.word-definition {
    margin-top: 10px;
    color: #555;
    line-height: 1.6;
}

/* Usage Guide */
.usage-guide-container {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 40px 30px;
    border-radius: 10px;
    margin-top: 40px;
}

.usage-guide-container h2 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 2rem;
}

.usage-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.usage-category {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.usage-category h3 {
    color: #2196F3;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.usage-category ul {
    list-style: none;
    margin-bottom: 20px;
}

.usage-category li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    color: #555;
}

.usage-category li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: #2196F3;
    font-weight: bold;
}

.usage-category li strong {
    color: #333;
}

.usage-examples {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.try-btn {
    padding: 8px 16px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.try-btn:hover {
    background-color: #0b7dda;
    transform: translateY(-2px);
}

/* Footer */
.main-footer {
    background-color: white;
    margin-top: 40px;
    padding: 40px 0 20px;
    border-radius: 10px;
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.1);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    gap: 40px;
    flex-wrap: wrap;
}

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

.footer-section h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.3rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background-color: #2196F3;
}

.footer-section p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 10px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #666;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: #2196F3;
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #f0f0f0;
    border-radius: 50%;
    color: #333;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: #2196F3;
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    margin-top: 30px;
    border-top: 1px solid #eee;
}

.footer-bottom p {
    color: #999;
    font-size: 14px;
}

/* Payment Modal Styles */
#payment-form-container {
    margin-top: 20px;
}

#card-element {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
    margin-bottom: 15px;
}

#card-errors {
    color: #f44336;
    font-size: 14px;
    margin-top: 10px;
}

.payment-submit {
    width: 100%;
    padding: 12px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.payment-submit:hover {
    background-color: #0b7dda;
}

.subscription-details {
    margin-bottom: 20px;
}

.subscription-details ul {
    list-style: none;
    margin-top: 15px;
}

.subscription-details li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.subscription-details li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4CAF50;
    font-weight: bold;
}

/* Page Content Styles (for other pages) */
.page-content {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.about-section,
.policy-content {
    margin-bottom: 30px;
}

.team-members {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.team-member {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 15px;
    object-fit: cover;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.contact-item i {
    font-size: 24px;
    color: #2196F3;
    margin-right: 15px;
}

.contact-form {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.contact-form button {
    padding: 12px 30px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.faq-item {
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid #eee;
}

/* Hamburger Menu */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
    background-color: #2196F3;
    color: white;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.menu-toggle:hover {
    background-color: #0b7dda;
}

/* Enhanced Responsive styles */
/* Mobile First Approach */

/* Extra small devices (portrait phones, less than 576px) */
@media (max-width: 575.98px) {
    .container {
        padding: 10px;
        max-width: 100%;
    }
    
    h1 {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .mode-selector {
        flex-direction: column;
        gap: 8px;
    }
    
    .mode-btn {
        width: 100%;
        padding: 12px;
        font-size: 1rem;
    }
    
    .premium-banner {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    
    .premium-info h3 {
        font-size: 1.3rem;
    }
    
    .premium-features-list {
        grid-template-columns: 1fr;
        gap: 8px;
        margin: 10px 0;
    }
    
    .premium-btn {
        width: 100%;
        padding: 12px;
        font-size: 1rem;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        padding: 12px;
    }
    
    .filters-container {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 12px;
    }
    
    .filter-group {
        min-width: 100%;
    }
    
    .input-container {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .input-container input {
        width: 100%;
        padding: 12px;
    }
    
    .input-container button {
        width: 100%;
        padding: 12px;
        font-size: 1rem;
    }
    
    .results-container {
        padding: 15px;
    }
    
    h2 {
        font-size: 1.3rem;
        text-align: center;
    }
    
    .word-item {
        padding: 12px;
        margin-bottom: 8px;
    }
    
    .word-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .word-text {
        font-size: 1.2rem;
    }
    
    .word-info {
        font-size: 0.9rem;
    }
    
    .usage-guide-container {
        padding: 20px 10px;
        margin-left: -10px;
        margin-right: -10px;
    }
    
    .usage-guide-container h2 {
        font-size: 1.5rem;
        padding: 0 10px;
    }
    
    .usage-categories {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 0 10px;
    }
    
    .usage-category {
        padding: 15px;
    }
    
    .usage-category h3 {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .usage-category ul {
        margin-left: 15px;
    }
    
    .usage-category li {
        font-size: 0.95rem;
        margin-bottom: 8px;
    }
    
    .usage-examples {
        flex-direction: column;
        gap: 8px;
        margin-top: 15px;
    }
    
    .try-btn {
        width: 100%;
        padding: 10px;
        font-size: 0.9rem;
    }
    
    .modal-content {
        margin: 5% auto;
        width: 95%;
        padding: 15px;
    }
    
    .auth-form h2 {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group input {
        padding: 10px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .auth-submit {
        padding: 12px;
        font-size: 1rem;
    }
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .container {
        max-width: 540px;
        padding: 15px;
    }
    
    .filters-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .usage-categories {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mode-selector {
        gap: 10px;
    }
    
    .mode-btn {
        padding: 11px 15px;
    }
    
    .premium-banner {
        padding: 20px;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        padding: 15px;
    }
    
    .filters-container {
        padding: 15px;
    }
    
    .input-container {
        gap: 15px;
    }
    
    .usage-guide-container {
        padding: 25px 15px;
    }
    
    .usage-categories {
        gap: 20px;
        padding: 0 15px;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .container {
        max-width: 720px;
        padding: 20px;
    }
    
    .header-container {
        flex-wrap: wrap;
        padding: 15px 20px;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
        margin-top: 10px;
    }
    
    .main-nav ul {
        justify-content: center;
    }
    
    .main-nav ul li {
        margin: 0 8px;
    }
    
    .main-nav ul li a {
        padding: 8px 12px;
        font-size: 0.95rem;
    }
    
    .auth-container {
        margin-top: 0;
    }
    
    #login-status {
        flex-wrap: nowrap;
        gap: 8px;
    }
    
    .filters-container {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .usage-categories {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-members {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .contact-content {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .premium-banner {
        padding: 25px;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        padding: 18px;
    }
    
    .filters-container {
        padding: 18px;
    }
    
    .input-container {
        gap: 18px;
    }
    
    .usage-guide-container {
        padding: 30px 20px;
    }
    
    .usage-categories {
        gap: 25px;
        padding: 0 20px;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .container {
        max-width: 960px;
        padding: 25px;
    }
    
    .header-container {
        flex-wrap: nowrap;
        padding: 15px 25px;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .main-nav {
        order: 2;
        width: auto;
        margin-top: 0;
        display: block !important;
    }
    
    .main-nav ul {
        justify-content: flex-start;
    }
    
    .main-nav ul li {
        margin: 0 12px;
    }
    
    .main-nav ul li a {
        padding: 8px 15px;
        font-size: 1rem;
    }
    
    .auth-container {
        margin-top: 0;
    }
    
    .filters-container {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .usage-categories {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .team-members {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .premium-banner {
        padding: 30px;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        padding: 20px;
    }
    
    .filters-container {
        padding: 20px;
    }
    
    .input-container {
        gap: 20px;
    }
    
    .usage-guide-container {
        padding: 35px 25px;
    }
    
    .usage-categories {
        gap: 30px;
        padding: 0 25px;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
        padding: 30px;
    }
    
    .header-container {
        padding: 20px 30px;
    }
    
    .main-nav ul li {
        margin: 0 15px;
    }
    
    .main-nav ul li a {
        padding: 10px 18px;
        font-size: 1.05rem;
    }
    
    .filters-container {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .premium-banner {
        padding: 35px;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        padding: 25px;
    }
    
    .filters-container {
        padding: 25px;
    }
    
    .input-container {
        gap: 25px;
    }
    
    .usage-guide-container {
        padding: 40px 30px;
    }
    
    .usage-categories {
        gap: 35px;
        padding: 0 30px;
    }
}

/* Mobile specific styles (under 992px) - Enhanced */
@media (max-width: 991.98px) {
    .menu-toggle {
        display: block;
        position: absolute;
        right: 20px;
        top: 20px;
        z-index: 1001;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        background-color: #f8f9fa;
        border-radius: 4px;
        margin-top: 10px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        position: absolute;
        top: 100%;
        left: 0;
        z-index: 1000;
    }
    
    .main-nav.show {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        padding: 10px 0;
    }
    
    .main-nav ul li {
        margin: 0;
        text-align: center;
    }
    
    .main-nav ul li a {
        display: block;
        padding: 15px 20px;
        border-bottom: 1px solid #eee;
        font-size: 1.1rem;
        transition: all 0.3s ease;
    }
    
    .main-nav ul li:last-child a {
        border-bottom: none;
    }
    
    .main-nav ul li a:hover {
        background-color: #e9ecef;
        color: #2196F3;
    }
    
    .header-container {
        flex-direction: column;
        align-items: stretch;
        padding: 15px;
        position: relative;
    }
    
    .logo {
        text-align: center;
        margin-bottom: 10px;
        justify-content: center;
        font-size: 1.8rem;
    }
    
    .auth-container {
        justify-content: center;
        margin-top: 15px;
    }
    
    #login-status {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .auth-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    .mode-selector {
        flex-direction: column;
    }
    
    .mode-btn {
        width: 100%;
        margin-bottom: 8px;
        padding: 14px;
        font-size: 1.1rem;
    }
    
    .premium-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .premium-info {
        margin-bottom: 20px;
    }
    
    .premium-features-list {
        grid-template-columns: 1fr;
        text-align: left;
        margin: 15px 0;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filters-container {
        grid-template-columns: 1fr;
    }
    
    .input-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .input-container input,
    .input-container button {
        width: 100%;
        padding: 14px;
        font-size: 1.1rem;
    }
    
    .usage-guide-container {
        padding: 25px 15px;
        margin-left: calc(-50vw + 50%);
        margin-right: calc(-50vw + 50%);
        border-radius: 0;
    }
    
    .usage-categories {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 5% auto;
        width: 90%;
        padding: 20px;
        max-width: 500px;
    }
    
    .footer-container {
        flex-direction: column;
        align-items: center;
        padding: 0 15px;
    }
    
    .footer-section {
        text-align: center;
        width: 100%;
        margin-bottom: 25px;
    }
    
    .footer-section h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-section ul {
        padding: 0;
        list-style-position: inside;
    }
    
    .footer-section ul li a:hover {
        padding-left: 0;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .page-content {
        padding: 25px 15px;
    }
    
    .team-members {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-item i {
        margin-right: 0;
        margin-bottom: 10px;
        font-size: 28px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .faq-item {
        padding-bottom: 15px;
        margin-bottom: 15px;
    }
    
    .policy-content h2 {
        margin-top: 25px;
        font-size: 1.4rem;
    }
}

/* Very small devices (under 480px) - Enhanced */
@media (max-width: 479.98px) {
    .container {
        padding: 10px;
    }
    
    .header-container {
        padding: 10px;
    }
    
    .logo {
        font-size: 1.5rem;
        padding: 5px 0;
    }
    
    .menu-toggle {
        right: 15px;
        top: 15px;
        padding: 8px;
        font-size: 1.3rem;
    }
    
    .main-nav ul li a {
        padding: 12px 15px;
        font-size: 1rem;
    }
    
    .auth-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    h1 {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }
    
    .mode-btn {
        padding: 12px;
        font-size: 1rem;
        margin-bottom: 6px;
    }
    
    .premium-banner {
        padding: 15px;
    }
    
    .premium-info h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }
    
    .premium-info p {
        font-size: 0.95rem;
    }
    
    .premium-features-list {
        margin: 12px 0;
    }
    
    .premium-features-list li {
        font-size: 0.9rem;
        padding-left: 18px;
    }
    
    .premium-btn {
        padding: 10px;
        font-size: 0.95rem;
    }
    
    .dictionary-toggle-container,
    .language-selector-container {
        padding: 12px;
        gap: 8px;
    }
    
    .filters-container {
        padding: 12px;
        gap: 10px;
    }
    
    .filter-group label {
        font-size: 0.9rem;
    }
    
    .filter-group input,
    .filter-group select {
        padding: 10px;
        font-size: 1rem;
    }
    
    .input-container {
        padding: 0;
        gap: 10px;
    }
    
    .input-container label {
        font-size: 1rem;
    }
    
    .input-container input {
        padding: 10px;
        font-size: 1rem;
    }
    
    .input-container button {
        padding: 12px;
        font-size: 1rem;
    }
    
    .results-container {
        padding: 12px;
    }
    
    h2 {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .word-item {
        padding: 10px;
        margin-bottom: 6px;
    }
    
    .word-text {
        font-size: 1.1rem;
    }
    
    .word-info {
        font-size: 0.85rem;
    }
    
    .usage-guide-container {
        padding: 20px 10px;
    }
    
    .usage-guide-container h2 {
        font-size: 1.4rem;
        margin-bottom: 15px;
    }
    
    .usage-categories {
        gap: 15px;
    }
    
    .usage-category {
        padding: 12px;
    }
    
    .usage-category h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .usage-category ul {
        margin-left: 12px;
    }
    
    .usage-category li {
        font-size: 0.9rem;
        margin-bottom: 6px;
    }
    
    .usage-examples {
        gap: 6px;
        margin-top: 12px;
    }
    
    .try-btn {
        padding: 8px;
        font-size: 0.85rem;
    }
    
    .modal-content {
        width: 95%;
        padding: 15px;
    }
    
    .auth-form h2 {
        font-size: 1.3rem;
        margin-bottom: 12px;
    }
    
    .form-group {
        margin-bottom: 12px;
    }
    
    .form-group label {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }
    
    .form-group input {
        padding: 10px;
        font-size: 16px;
    }
    
    .auth-submit {
        padding: 12px;
        font-size: 1rem;
        margin-top: 8px;
    }
    
    .form-switch {
        font-size: 0.9rem;
        margin-top: 15px;
    }
    
    .footer-container {
        padding: 0 10px;
    }
    
    .footer-section {
        margin-bottom: 20px;
    }
    
    .footer-section h3 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .footer-section p,
    .footer-section li {
        font-size: 0.9rem;
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
    }
    
    .page-content {
        padding: 20px 10px;
    }
    
    .about-section {
        margin-bottom: 20px;
    }
    
    .team-member {
        padding: 15px;
    }
    
    .team-member img {
        width: 100px;
        height: 100px;
    }
    
    .team-member h3 {
        font-size: 1.1rem;
        margin: 10px 0 5px;
    }
    
    .team-member p {
        font-size: 0.9rem;
    }
    
    .contact-form {
        padding: 15px;
    }
    
    .faq-item h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .faq-item p {
        font-size: 0.95rem;
    }
}