:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --background-color: #f5f6fa;
    --text-color: #2c3e50;
    --card-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --message-bg: #f8f9fa;
    --message-border: #e9ecef;
    --gradient-start: #4a69bd;
    --gradient-end: #3498db;
}

[data-theme="dark"] {
    --primary-color: #1a1a2e;
    --secondary-color: #4a69bd;
    --background-color: #0f0f1a;
    --text-color: #ffffff;
    --card-bg: #1f1f2e;
    --shadow-color: rgba(255, 255, 255, 0.1);
    --message-bg: #2a2a3a;
    --message-border: #1f1f2e;
    --tool-card-bg: #1f1f2e;
    --tool-input-bg: #2a2a3a;
    --tool-border: #3a3a4a;
    --hover-color: #2a2a4a;
}

body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    text-align: center;
    padding: 50px 20px;
}

.cta-button {
    display: inline-block;
    padding: 15px 30px;
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 18px;
}

.chat-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--primary-color);
    padding: 20px;
    color: white;
    background: linear-gradient(180deg, var(--primary-color), #1a1a2e);
    border-radius: 10px;
    margin: 10px;
    box-shadow: 0 0 10px var(--shadow-color);
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--background-color);
    border-radius: 10px;
    margin: 10px;
    box-shadow: 0 0 10px var(--shadow-color);
}

.messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.message {
    max-width: 80%;
    padding: 15px;
    margin: 10px;
    border-radius: 15px;
    box-shadow: 0 2px 5px var(--shadow-color);
    line-height: 1.5;
    font-size: 15px;
    animation: fadeIn 0.3s ease-out;
    position: relative;
    overflow: hidden;
}

.message::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.message:active::after {
    animation: ripple 0.6s linear;
}

.user-message {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 5px;
}

.ai-message {
    background-color: var(--message-bg);
    border: 1px solid var(--message-border);
    margin-right: auto;
    border-bottom-left-radius: 5px;
}

.system-message {
    background-color: var(--message-bg);
    color: var(--text-color);
    text-align: center;
    margin: 10px auto;
    opacity: 0.7;
    font-style: italic;
    animation: pulse 1.5s infinite;
}

/* Input Area Improvements */
.input-area {
    padding: 20px;
    display: flex;
    gap: 12px;
    background-color: var(--card-bg);
    border-top: 1px solid var(--message-border);
    padding: 15px;
    border-radius: 0 0 10px 10px;
}

.input-buttons {
    display: flex;
    gap: 8px;
}

.send-btn, .clear-btn {
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--secondary-color);
    color: white;
    transition: transform 0.2s ease;
}

.clear-btn {
    background-color: #ff4444;
}

.send-btn:active, .clear-btn:active {
    transform: scale(0.95);
}

textarea {
    flex: 1;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ddd;
    background-color: var(--message-bg);
    color: var(--text-color);
    border: 1px solid var(--message-border);
    padding: 15px;
    font-size: 15px;
    resize: none;
    transition: all 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

button {
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.new-chat-btn {
    width: 100%;
    margin-bottom: 20px;
}

.model-select {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-toggle button {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-color);
    cursor: pointer;
    padding: 10px;
    border-radius: 50%;
    background-color: var(--card-bg);
    box-shadow: 0 2px 5px var(--shadow-color);
    width: 45px;
    height: 45px;
    transition: transform 0.3s, background-color 0.3s;
    animation: bounce 1s infinite;
    transition: transform 0.3s ease;
}

.theme-toggle button:hover {
    transform: rotate(180deg);
}

/* Theme toggle styles */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-toggle button,
.theme-toggle-mobile {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background-color: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 2px 5px var(--shadow-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.theme-toggle button:hover,
.theme-toggle-mobile:hover {
    transform: rotate(180deg);
}

/* Theme transition classes */
.theme-transition,
.theme-transition * {
    transition: background-color 0.3s ease,
                color 0.3s ease,
                border-color 0.3s ease !important;
}

/* Mobile theme toggle */
@media (max-width: 768px) {
    .theme-toggle {
        display: none;
    }

    .theme-toggle-mobile {
        margin-left: auto;
        margin-right: 10px;
    }
}

/* Feature Cards */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
    padding: 0 20px;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow-color);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2em;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* Mobile Header */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    padding: 10px;
    z-index: 1000;
    justify-content: space-between;
    align-items: center;
}

.toggle-sidebar, .theme-toggle-mobile {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    padding: 8px;
}

.model-select-mobile {
    display: none;
    max-width: 150px;
}

/* Chat History Improvements */
.chat-history {
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    max-height: calc(100vh - 120px);
}

.chat-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
    margin: 5px 0;
    padding: 12px;
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.chat-history-item:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.chat-history-item.active {
    background-color: rgba(255, 255, 255, 0.2);
    border-left: 3px solid var(--secondary-color);
}

.chat-info {
    flex: 1;
    overflow: hidden;
}

.chat-preview {
    display: block;
    font-size: 14px;
    color: #fff;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-date {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.delete-chat {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    padding: 4px 8px;
    font-size: 14px;
}

.delete-chat:hover {
    color: #ff4444;
}

.empty-state {
    text-align: center;
    color: var(--text-color);
    opacity: 0.7;
    padding: 20px;
}

/* Enhanced Mobile Styles */
@media (max-width: 768px) {
    .chat-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        animation: slideIn 0.3s ease-out;
    }

    .messages {
        max-height: 60vh;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .chat-history {
        max-height: 30vh;
        overflow-y: auto;
    }

    .mobile-header {
        display: flex;
    }

    .chat-container {
        margin-top: 60px;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        top: 60px;
        bottom: 0;
        width: 80%;
        max-width: 300px;
        transition: left 0.3s ease;
        z-index: 900;
    }

    .sidebar.active {
        left: 0;
    }

    .model-select {
        display: none;
    }

    .model-select-mobile {
        display: block;
    }

    .chat-main {
        margin-left: 0;
    }

    .messages {
        padding: 10px;
    }

    .message {
        max-width: 85%;
        animation: fadeIn 0.3s ease-out;
    }

    .input-area {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background-color: var(--background-color);
        padding: 10px;
        box-shadow: 0 -2px 10px var(--shadow-color);
    }

    textarea {
        max-height: 100px;
    }

    .tools-container {
        padding: 10px;
        margin: 20px auto;
    }

    .tool-card {
        padding: 15px;
        margin-bottom: 15px;
        transform: none;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .tool-card:active {
        transform: scale(0.98);
    }

    .tool-input {
        flex-direction: column;
        gap: 10px;
    }

    .tool-input input[type="url"] {
        width: 100%;
        padding: 12px;
        font-size: 16px; /* Better for mobile tapping */
    }

    .upload-btn {
        position: absolute;
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background-color: var(--secondary-color);
    }

    .tool-card button {
        width: 100%;
        padding: 12px;
        margin-top: 10px;
        font-size: 16px;
    }

    /* Mobile-specific dark mode adjustments */
    [data-theme="dark"] .tool-card {
        background-color: var(--tool-card-bg);
        border: 1px solid var(--tool-border);
    }

    [data-theme="dark"] .tool-input input[type="url"] {
        background-color: var(--tool-input-bg);
        border-color: var(--tool-border);
    }

    .chat-history-item {
        padding: 15px;
        margin: 8px 0;
    }

    .input-area {
        padding: 12px;
        gap: 8px;
    }

    textarea {
        font-size: 16px;
        padding: 12px;
    }

    button {
        padding: 12px 20px;
        font-size: 16px;
    }

    .model-select-mobile {
        background-color: var(--card-bg);
        color: var(--text-color);
        border: 1px solid var(--message-border);
        padding: 8px 12px;
        border-radius: 20px;
        font-size: 14px;
        max-width: 120px;
        margin-left: auto; /* Improve spacing */
    }

    .mobile-controls {
        display: flex;
        align-items: center;
        gap: 8px; /* Reduce gap between elements */
    }
}

/* Loading animation */
@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

/* Tools Page Styles */
.tools-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
}

.tools-section {
    margin-bottom: 40px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.tool-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow-color);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--shadow-color);
}

.tool-input {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-input input,
.tool-input textarea,
.tool-input select {
    padding: 10px;
    border: 1px solid var(--message-border);
    border-radius: 5px;
    background-color: var(--message-bg);
    color: var(--text-color);
}

.tool-input input[type="url"] {
    flex: 1;
    padding-right: 45px;
    border: 1px solid var(--message-border);
    transition: border-color 0.3s, background-color 0.3s;
}

.tool-input input[type="url"].drag-over {
    border-color: var(--secondary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

.upload-btn {
    padding: 8px;
    min-width: 36px;
    border-radius: 4px;
    background-color: var(--secondary-color);
    color: white;
    cursor: pointer;
    position: absolute;
    right: 5px;
    transition: opacity 0.3s;
}

.upload-btn:hover {
    opacity: 0.9;
}

.result-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.result-content {
    max-width: 90%;
    max-height: 90%;
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.result-content img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
}

.result-actions {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 10px;
}

/* Loading Animation */
.loading::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

/* New styles */
.tool-link {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
    transition: transform 0.2s;
}

.tool-link:hover {
    transform: translateY(-2px);
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.loading-spinner {
    background: var(--card-bg);
    padding: 25px 50px;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow-color);
    animation: bounce 1s infinite;
}

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

/* Error handling styles */
.error-message {
    background-color: #ff4444;
    color: white;
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
    text-align: center;
}

/* Enhanced mobile styles for tools */
@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .result-content {
        width: 95%;
        max-height: 80vh;
    }
}

/* Mode Selector Styles */
.mode-selector {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-mode-select {
    width: 100%;
    padding: 8px;
    border-radius: 5px;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--message-border);
}

.secret-word-input {
    width: 100%;
    padding: 8px;
    border-radius: 5px;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--message-border);
}

.secret-input-group {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.submit-secret-btn {
    padding: 8px 16px;
    border-radius: 5px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    cursor: pointer;
}

.submit-secret-btn:hover {
    opacity: 0.9;
}

/* New animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes ripple {
    to { transform: scale(2); opacity: 0; }
}

/* Loading indicators */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 10px;
    margin: 10px;
    background: var(--message-bg);
    border-radius: 20px;
    width: fit-content;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 50%;
    animation: typing 1s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* New interactive elements */
.interactive-button {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.interactive-button::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: linear-gradient(rgba(255,255,255,0.1), transparent);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.interactive-button:hover::after {
    transform: translateY(0);
}

/* Mobile Header Styles */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--primary-color);
    padding: 12px 16px;
    z-index: 1000;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px var(--shadow-color);
    backdrop-filter: blur(10px);
}

.mobile-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle-mobile {
    width: 40px !important;
    height: 40px !important;
    border-radius: 50%;
    border: none;
    background-color: var(--secondary-color) !important;
    color: white !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.theme-toggle-mobile:active {
    transform: scale(0.95);
}

.model-select-mobile {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--message-border);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 14px;
    max-width: 120px;
}

/* Enhanced Mobile Styles */
@media (max-width: 768px) {
    .mobile-header {
        display: flex;
    }

    .theme-toggle {
        display: none;
    }

    .chat-container {
        margin-top: 64px;
    }

    .tool-card {
        margin: 10px 0;
        padding: 16px;
        border-radius: 12px;
    }

    .tool-input {
        gap: 12px;
    }

    textarea, input[type="text"], input[type="url"] {
        font-size: 16px;
        padding: 12px;
        border-radius: 20px;
    }

    button {
        height: 44px;
        border-radius: 22px;
        font-size: 16px;
        padding: 0 20px;
    }

    .tools-container {
        padding: 16px;
        margin-top: 64px;
    }

    [data-theme="dark"] .mobile-header {
        background-color: var(--primary-color);
        border-bottom: 1px solid var(--tool-border);
    }

    [data-theme="dark"] .model-select-mobile {
        background-color: var(--tool-card-bg);
        border-color: var(--tool-border);
    }

    /* Mobile animations */
    .tool-card, .message {
        animation: slideUp 0.3s ease-out;
    }

    @keyframes slideUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Better touch feedback */
    .tool-card:active,
    button:active {
        transform: scale(0.98);
    }
}

/* Add these new animations */
@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.theme-transition {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Mobile Header Improvements */
.toggle-sidebar {
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.toggle-sidebar:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 60px;
        bottom: 0;
        width: 80%;
        max-width: 300px;
        z-index: 1000;
        background-color: var(--card-bg);
        transition: transform 0.3s ease-in-out;
        transform: translateX(-100%);
    }

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

    .mobile-header {
        background-color: var(--card-bg);
        box-shadow: 0 2px 10px var(--shadow-color);
    }

    .toggle-sidebar {
        color: var(--text-color);
    }

    .input-area {
        padding: 12px 16px;
        gap: 12px;
    }

    .input-buttons {
        display: flex;
        gap: 8px;
    }

    /* Improve touch targets */
    .send-btn, .clear-btn, .toggle-sidebar {
        min-width: 44px;
        min-height: 44px;
    }
}

/* Mobile Header & Button Styles */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--card-bg);
    padding: 8px 16px;
    z-index: 1000;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px var(--shadow-color);
    height: 60px;
}

.toggle-sidebar {
    width: 44px !important;
    height: 44px !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center;
    justify-content: center;
    background: var(--secondary-color) !important;
    border: none;
    color: white !important;
    font-size: 20px;
    cursor: pointer;
    border-radius: 50%;
    -webkit-tap-highlight-color: transparent;
}

.mobile-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle-mobile {
    width: 44px !important;
    height: 44px !important;
    border-radius: 50%;
    border: none;
    background-color: var(--secondary-color) !important;
    color: white !important;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* Mobile-specific styles */
@media (max-width: 768px) {
    .mobile-header {
        display: flex;
    }

    .theme-toggle {
        display: none;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        top: 60px;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        z-index: 1000;
        background-color: var(--card-bg);
        transition: all 0.3s ease-in-out;
        transform: translateX(-100%);
        box-shadow: 2px 0 10px rgba(0,0,0,0.2);
    }

    .sidebar.active {
        left: 0;
        transform: translateX(0);
    }

    /* Improve touch targets */
    button {
        min-width: 44px;
        min-height: 44px;
    }

    .input-buttons {
        display: flex;
        gap: 8px;
    }

    .clear-btn, .send-btn {
        width: 44px !important;
        height: 44px !important;
        padding: 0 !important;
        border-radius: 50%;
        display: flex !important;
        align-items: center;
        justify-content: center;
        font-size: 18px;
    }

    /* Active/Pressed states for mobile */
    .interactive-button:active {
        transform: scale(0.95);
        opacity: 0.9;
    }

    /* Remove hover effects on mobile */
    .interactive-button:hover::after {
        display: none;
    }
}

/* Mobile Button and Interaction Styles */
@media (max-width: 768px) {
    .chat-history-item {
        padding: 15px;
        margin: 8px 0;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .chat-history-item:active {
        background-color: rgba(255, 255, 255, 0.3);
        transform: scale(0.98);
    }

    .delete-chat {
        min-width: 44px;
        min-height: 44px;
        padding: 10px;
        margin: -10px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .delete-chat:active {
        transform: scale(0.9);
        color: #ff0000;
    }

    .clear-btn, .send-btn {
        width: 44px !important;
        height: 44px !important;
        padding: 0 !important;
        border-radius: 50%;
        display: flex !important;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .clear-btn:active, .send-btn:active {
        transform: scale(0.9);
        opacity: 0.8;
    }

    .sidebar {
        overscroll-behavior: contain;
    }

    .chat-history {
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 60px;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        z-index: 1000;
        background-color: var(--card-bg);
        transition: all 0.3s ease;
        transform: translateX(-100%);
        box-shadow: 2px 0 10px rgba(0,0,0,0.2);
        will-change: transform;
    }

    .toggle-sidebar {
        z-index: 1001;
        position: relative;
        cursor: pointer;
        border-radius: 50%;
        width: 44px !important;
        height: 44px !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
        background: var(--secondary-color) !important;
        border: none;
        color: white !important;
        font-size: 20px;
        -webkit-tap-highlight-color: transparent;
    }

    .toggle-sidebar:active {
        transform: scale(0.95);
        opacity: 0.9;
    }

    /* Improved mobile overlay */
    .sidebar::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        transition: opacity 0.3s ease;
        pointer-events: none;
        z-index: -1;
    }

    .sidebar[style*="left: 0"] {
        transform: translateX(0);
    }

    .sidebar[style*="left: 0"]::before {
        opacity: 1;
        pointer-events: auto;
    }
}

/* Add these styles for better mobile handling */

/* Mobile Sidebar Overlay */
body.sidebar-open::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    backdrop-filter: blur(2px);
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 60px;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        z-index: 1000;
        background-color: var(--card-bg);
        transition: all 0.3s ease;
        transform: translateX(-100%);
        box-shadow: 2px 0 10px rgba(0,0,0,0.2);
        will-change: transform;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .sidebar[style*="left: 0"] {
        transform: translateX(0);
    }

    /* Improved touch targets */
    .toggle-sidebar,
    .clear-btn, 
    .send-btn,
    .delete-chat {
        min-width: 44px;
        min-height: 44px;
        padding: 0 !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    /* Active states */
    .interactive-button:active {
        transform: scale(0.95);
        opacity: 0.9;
    }

    /* Overlay when sidebar is open */
    body.sidebar-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    /* Ensure toggle button is always visible */
    .toggle-sidebar {
        z-index: 1001;
        width: 44px !important;
        height: 44px !important;
        padding: 0 !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
        background: var(--secondary-color) !important;
        color: white !important;
        border-radius: 50%;
        border: none;
    }
}

/* Mobile sidebar styles */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 60px;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        z-index: 1000;
        background-color: var(--card-bg);
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.2);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Overlay background */
    body.sidebar-open::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        backdrop-filter: blur(2px);
    }

    /* Menu button styles */
    .toggle-sidebar {
        width: 44px !important;
        height: 44px !important;
        padding: 0 !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
        background-color: var(--secondary-color) !important;
        color: white !important;
        border: none;
        border-radius: 50%;
        cursor: pointer;
        z-index: 1001;
        -webkit-tap-highlight-color: transparent;
    }

    .toggle-sidebar:active {
        transform: scale(0.95);
        opacity: 0.9;
    }
}

/* Mobile Header for Tools */
.mobile-header {
    display: none;
}

.back-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    text-decoration: none;
    font-size: 20px;
}

.mobile-title {
    margin: 0;
    font-size: 20px;
    color: var(--text-color);
}

/* Mobile Styles */
@media (max-width: 768px) {
    .mobile-header {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        padding: 8px 16px;
        background-color: var(--card-bg);
        z-index: 1000;
        align-items: center;
        justify-content: space-between;
        box-shadow: 0 2px 10px var(--shadow-color);
        height: 60px;
    }

    .theme-toggle {
        display: none;
    }

    .tools-container {
        padding: 80px 16px 16px;
    }

    .tools-section {
        margin-bottom: 24px;
    }

    .tools-section h2 {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .tool-card {
        margin-bottom: 16px;
        padding: 16px;
    }

    .tool-input {
        flex-direction: column;
    }

    .tool-input input[type="url"],
    .tool-input textarea {
        width: 100%;
        padding: 12px;
        font-size: 16px;
        border-radius: 12px;
    }

    .tool-input button {
        width: 100%;
        height: 44px;
        margin-top: 8px;
        font-size: 16px;
    }

    /* Improved Result Display */
    .result-container {
        padding: 16px;
    }

    .result-content {
        width: 100%;
        max-height: 80vh;
        padding: 16px;
    }

    .result-actions {
        flex-direction: column;
        gap: 8px;
    }

    .result-actions button {
        width: 100%;
        height: 44px;
    }
}