/* Base styles */
* {
    box-sizing: border-box;
}

/* Define CSS Variables for Colors and Gradients */
:root {
    /* Dark Mode Colors */
    --body-bg-gradient-start: #1A202C;
    --body-bg-gradient-end: #2D3748;
    --app-container-bg: rgba(255, 255, 255, 0.05);
    --app-container-shadow: rgba(0, 0, 0, 0.3);

    --sidebar-bg-gradient-start: rgba(30, 41, 59, 0.85);
    --sidebar-bg-gradient-end: rgba(17, 24, 39, 0.85);
    --sidebar-border-color: rgba(255, 255, 255, 0.1);
    --sidebar-header-bg: rgba(255, 255, 255, 0.05);

    --logo-icon-bg: rgba(255, 255, 255, 0.15);
    --logo-icon-border: rgba(255, 255, 255, 0.2);

    --app-title-color: #E2E8F0;
    --app-subtitle-opacity: 0.7;

    --new-chat-btn-bg: rgba(255, 255, 255, 0.1);
    --new-chat-btn-border: rgba(255, 255, 255, 0.2);
    --new-chat-btn-color: white;
    --new-chat-btn-hover-bg: rgba(255, 255, 255, 0.2);
    --new-chat-btn-shadow: rgba(0, 0, 0, 0.2);
    --new-chat-btn-hover-shadow: rgba(0, 0, 0, 0.3);

    --history-item-bg: rgba(255, 255, 255, 0.05);
    --history-item-border: rgba(255, 255, 255, 0.1);
    --history-item-hover-bg: rgba(255, 255, 255, 0.1);
    --history-title-color: #E2E8F0;
    --history-preview-opacity: 0.7;

    --chat-area-bg: #1A202C;

    --chat-header-bg: rgba(255, 255, 255, 0.05);
    --chat-header-border-color: rgba(255, 255, 255, 0.1);
    --chat-header-title-color: #E2E8F0;

    --control-btn-bg: rgba(255, 255, 255, 0.1);
    --control-btn-color: #CBD5E1;
    --control-btn-hover-bg: rgba(255, 255, 255, 0.2);
    --control-btn-hover-color: #4A90E2;

    --chat-messages-bg: #1A202C;
    --scrollbar-thumb-bg: #4A5568;
    --scrollbar-thumb-hover-bg: #6B7280;

    --message-avatar-shadow: rgba(0, 0, 0, 0.2);
    --user-avatar-bg-gradient-start: #4A90E2;
    --user-avatar-bg-gradient-end: #357ABD;
    --ai-avatar-bg-gradient-start: #FF9F43;
    --ai-avatar-bg-gradient-end: #E68A2E;

    --message-sender-color: #E2E8F0;
    --message-time-color: #A0AEC0;

    --message-bubble-bg: rgba(255, 255, 255, 0.08);
    --message-bubble-border: rgba(255, 255, 255, 0.1);
    --message-bubble-color: #E2E8F0;
    --message-bubble-shadow: rgba(0, 0, 0, 0.15);
    --message-bubble-hover-shadow: rgba(0, 0, 0, 0.25);
    --user-bubble-bg-gradient-start: #4A90E2;
    --user-bubble-bg-gradient-end: #357ABD;
    --user-bubble-border-color: rgba(255, 255, 255, 0.2);

    --welcome-message-color: #A0AEC0;
    --welcome-title-color: #E2E8F0;
    --welcome-subtitle-color: #A0AEC0;

    --suggestion-card-bg: rgba(255, 255, 255, 0.08);
    --suggestion-card-border: rgba(255, 255, 255, 0.1);
    --suggestion-card-shadow: rgba(0, 0, 0, 0.15);
    --suggestion-card-before-bg-gradient-start: #4A90E2;
    --suggestion-card-before-bg-gradient-end: #FF9F43;
    --suggestion-card-hover-border-color: #4A90E2;
    --suggestion-card-hover-shadow: rgba(74, 144, 226, 0.25);
    --suggestion-title-color: #E2E8F0;
    --suggestion-text-color: #A0AEC0;

    --input-area-bg: rgba(255, 255, 255, 0.05);
    --input-area-border-top: rgba(255, 255, 255, 0.1);
    --input-container-bg: rgba(255, 255, 255, 0.1);
    --input-container-border: rgba(255, 255, 255, 0.15);
    --input-container-shadow: rgba(0, 0, 0, 0.15);
    --input-container-focus-border: #4A90E2;
    --input-container-focus-shadow: rgba(74, 144, 226, 0.2);

    --chat-input-color: #E2E8F0;
    --chat-input-placeholder-color: #A0AEC0;

    --send-button-bg-gradient-start: #4A90E2;
    --send-button-bg-gradient-end: #357ABD;
    --send-button-shadow: rgba(74, 144, 226, 0.3);
    --send-button-hover-bg-gradient-start: #357ABD;
    --send-button-hover-bg-gradient-end: #2A5C8E;
    --send-button-hover-shadow: rgba(74, 144, 226, 0.4);
    --send-button-disabled-bg: rgba(160, 174, 192, 0.3);

    --loading-indicator-color: #A0AEC0;
    --loading-indicator-bg: rgba(255, 255, 255, 0.08);
    --loading-indicator-border: rgba(255, 255, 255, 0.1);
    --loading-indicator-shadow: rgba(0, 0, 0, 0.15);

    --code-block-bg: rgba(0, 0, 0, 0.2);
    --code-block-border: rgba(255, 255, 255, 0.15);
    --code-block-color: #E2E8F0;
    --inline-code-bg: rgba(255, 255, 255, 0.1);
    --inline-code-color: #E2E8F0;

    --link-color: #63B3ED;
    --service-button-bg-gradient-start: #4A90E2;
    --service-button-bg-gradient-end: #357ABD;
    --service-button-shadow: rgba(74, 144, 226, 0.3);
    --service-button-hover-bg-gradient-start: #357ABD;
    --service-button-hover-bg-gradient-end: #2A5C8E;
    --service-button-hover-shadow: rgba(74, 144, 226, 0.4);

    --theme-toggle-color: #CBD5E1; /* Color for the theme toggle icon */
}

/* Light Mode Variables */
body.light-mode {
    --body-bg-gradient-start: #fff;
    --body-bg-gradient-end: #fff;
    --app-container-bg: #ffffff;
    --app-container-shadow: rgba(0, 0, 0, 0.1);

    --sidebar-bg-gradient-start: #0066cc;
    --sidebar-bg-gradient-end: #0052a3;
    --sidebar-border-color: rgba(255, 255, 255, 0.1);
    --sidebar-header-bg: rgba(255, 255, 255, 0.05);

    --logo-icon-bg: rgba(255, 255, 255, 0.15);
    --logo-icon-border: transparent; /* No specific border in original */

    --app-title-color: white;
    --app-subtitle-opacity: 0.8;

    --new-chat-btn-bg: rgba(255, 255, 255, 0.1);
    --new-chat-btn-border: rgba(255, 255, 255, 0.2);
    --new-chat-btn-color: white;
    --new-chat-btn-hover-bg: rgba(255, 255, 255, 0.2);
    --new-chat-btn-shadow: transparent;
    --new-chat-btn-hover-shadow: rgba(0, 0, 0, 0.15);

    --history-item-bg: rgba(255, 255, 255, 0.05);
    --history-item-border: rgba(255, 255, 255, 0.1);
    --history-item-hover-bg: rgba(255, 255, 255, 0.1);
    --history-title-color: white;
    --history-preview-opacity: 0.7;

    --chat-area-bg: #ffffff;

    --chat-header-bg: #ffffff;
    --chat-header-border-color: #e2e8f0;
    --chat-header-title-color: #1e293b;

    --control-btn-bg: transparent;
    --control-btn-color: #64748b;
    --control-btn-hover-bg: #f1f5f9;
    --control-btn-hover-color: #0066cc;

    --chat-messages-bg: #f8fafc;
    --scrollbar-thumb-bg: #cbd5e1;
    --scrollbar-thumb-hover-bg: #94a3b8;

    --message-avatar-shadow: rgba(0, 0, 0, 0.1);
    --user-avatar-bg-gradient-start: #0066cc;
    --user-avatar-bg-gradient-end: #0052a3;
    --ai-avatar-bg-gradient-start: #10b981;
    --ai-avatar-bg-gradient-end: #059669;

    --message-sender-color: #1e293b;
    --message-time-color: #64748b;

    --message-bubble-bg: #ffffff;
    --message-bubble-border: #e2e8f0;
    --message-bubble-color: #1e293b;
    --message-bubble-shadow: rgba(0, 0, 0, 0.05);
    --message-bubble-hover-shadow: rgba(0, 0, 0, 0.1);
    --user-bubble-bg-gradient-start: #0066cc;
    --user-bubble-bg-gradient-end: #0052a3;
    --user-bubble-border-color: #0066cc;

    --welcome-message-color: #64748b;
    --welcome-title-color: #1e293b;
    --welcome-subtitle-color: #64748b;

    --suggestion-card-bg: #ffffff;
    --suggestion-card-border: #e2e8f0;
    --suggestion-card-shadow: rgba(0, 0, 0, 0.05);
    --suggestion-card-before-bg-gradient-start: #0066cc;
    --suggestion-card-before-bg-gradient-end: #10b981;
    --suggestion-card-hover-border-color: #0066cc;
    --suggestion-card-hover-shadow: rgba(0, 102, 204, 0.15);
    --suggestion-title-color: #1e293b;
    --suggestion-text-color: #64748b;

    --input-area-bg: #ffffff;
    --input-area-border-top: #e2e8f0;
    --input-container-bg: #ffffff;
    --input-container-border: #e2e8f0;
    --input-container-shadow: rgba(0, 0, 0, 0.05);
    --input-container-focus-border: #0066cc;
    --input-container-focus-shadow: rgba(0, 102, 204, 0.1);

    --chat-input-color: #1e293b;
    --chat-input-placeholder-color: #94a3b8;

    --send-button-bg-gradient-start: #0066cc;
    --send-button-bg-gradient-end: #0052a3;
    --send-button-shadow: rgba(0, 102, 204, 0.3);
    --send-button-hover-bg-gradient-start: #0052a3;
    --send-button-hover-bg-gradient-end: #003d7a;
    --send-button-hover-shadow: rgba(0, 102, 204, 0.4);
    --send-button-disabled-bg: #cbd5e1;

    --loading-indicator-color: #64748b;
    --loading-indicator-bg: #ffffff;
    --loading-indicator-border: #e2e8f0;
    --loading-indicator-shadow: rgba(0, 0, 0, 0.05);

    --code-block-bg: #f1f5f9;
    --code-block-border: #cbd5e1;
    --code-block-color: #1e293b;
    --inline-code-bg: rgba(0, 0, 0, 0.05);
    --inline-code-color: #1e293b;

    --link-color: #3b82f6;
    --service-button-bg-gradient-start: #3b82f6;
    --service-button-bg-gradient-end: #2563eb;
    --service-button-shadow: rgba(0, 102, 204, 0.3);
    --service-button-hover-bg-gradient-start: #2563eb;
    --service-button-hover-bg-gradient-end: #1d4ed8;
    --service-button-hover-shadow: rgba(0, 102, 204, 0.4);

    --theme-toggle-color: #64748b; /* Color for the theme toggle icon in light mode */
}


body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--body-bg-gradient-start) 0%, var(--body-bg-gradient-end) 100%);
    margin: 0;
    padding: 0;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    /* Add transition for smooth theme changes */
    transition: background 0.5s ease;
}

/* Apply transitions to elements that change color/background */
.theme-transition * {
    transition: background-color 0.5s ease, color 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease, transform 0.5s ease, opacity 0.5s ease;
}

/* Specific elements that use gradients or complex backgrounds might need explicit transitions if they don't inherit well */
.app-container,
.sidebar,
.sidebar-header,
.logo-icon,
.new-chat-btn,
.history-item,
.chat-area,
.chat-header,
.control-btn,
.chat-messages,
.message-bubble,
.suggestion-card,
.input-area,
.input-container,
.send-button,
.loading-indicator,
.message-bubble pre,
.message-bubble code,
.service-link-container a {
    transition: background 0.5s ease, background-color 0.5s ease, color 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease, transform 0.5s ease, opacity 0.5s ease, filter 0.5s ease;
}


.app-container {
    display: flex;
    height: 100vh;
    height: 100dvh;
    background: var(--app-container-bg);
    box-shadow: 0 0 50px var(--app-container-shadow);
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    margin: 20px;
}

/* Sidebar Styles */
.sidebar {
    width: 280px;
    background: linear-gradient(180deg, var(--sidebar-bg-gradient-start) 0%, var(--sidebar-bg-gradient-end) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 100;
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--sidebar-border-color);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--sidebar-border-color);
    background: var(--sidebar-header-bg);
    backdrop-filter: blur(15px);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--logo-icon-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid var(--logo-icon-border);
}

.app-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.5px;
    color: var(--app-title-color); /* Apply variable */
}

.app-subtitle {
    font-size: 13px;
    opacity: var(--app-subtitle-opacity);
    margin: 4px 0 0 0;
    font-weight: 400;
}

.new-chat-btn {
    background: var(--new-chat-btn-bg);
    border: 1px solid var(--new-chat-btn-border);
    color: var(--new-chat-btn-color);
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px var(--new-chat-btn-shadow);
}

.new-chat-btn:hover {
    background: var(--new-chat-btn-hover-bg);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--new-chat-btn-hover-shadow);
}

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

.chat-history {
    margin-top: 20px;
}

.history-item {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--history-item-bg);
    border: 1px solid var(--history-item-border);
    backdrop-filter: blur(5px);
}

.history-item:hover {
    background: var(--history-item-hover-bg);
    transform: translateX(4px);
}

.history-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--history-title-color);
}

.history-preview {
    font-size: 12px;
    opacity: var(--history-preview-opacity);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Main Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--chat-area-bg);
    position: relative;
}

.chat-header {
    padding: 20px 32px;
    border-bottom: 1px solid var(--chat-header-border-color);
    background: var(--chat-header-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(15px);
    color: white;
}

.chat-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--chat-header-title-color);
    margin: 0;
    letter-spacing: -0.5px;
}

.header-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.control-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: none;
    background: var(--control-btn-bg);
    color: var(--control-btn-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    backdrop-filter: blur(5px);
}

.control-btn:hover {
    background: var(--control-btn-hover-bg);
    color: var(--control-btn-hover-color);
    transform: scale(1.05);
}

/* Theme Toggle Button specific styling */
#theme-toggle-btn {
    color: var(--theme-toggle-color); /* Use variable for color */
}

.menu-btn {
    display: none;
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    background: var(--chat-messages-bg);
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb-bg);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover-bg);
}

.message-container {
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    animation: slide-in 0.4s ease-out;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px var(--message-avatar-shadow);
}

.user-avatar {
    background: linear-gradient(135deg, var(--user-avatar-bg-gradient-start) 0%, var(--user-avatar-bg-gradient-end) 100%);
    color: white;
}

.ai-avatar {
    background: linear-gradient(135deg, var(--ai-avatar-bg-gradient-start) 0%, var(--ai-avatar-bg-gradient-end) 100%);
    color: white;
}

.message-sender {
    font-size: 14px;
    font-weight: 600;
    color: var(--message-sender-color);
}

.message-time {
    font-size: 12px;
    color: var(--message-time-color);
    margin-left: auto;
}

.message-bubble {
    background: var(--message-bubble-bg);
    border: 1px solid var(--message-bubble-border);
    border-radius: 16px;
    padding: 20px 24px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--message-bubble-color);
    box-shadow: 0 4px 16px var(--message-bubble-shadow);
    max-width: 85%;
    position: relative;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
}

.message-bubble:hover {
    box-shadow: 0 8px 25px var(--message-bubble-hover-shadow);
    transform: translateY(-2px);
}

.user-message-container {
    align-items: flex-end;
}

.user-message-container .message-bubble {
    background: linear-gradient(135deg, var(--user-bubble-bg-gradient-start) 0%, var(--user-bubble-bg-gradient-end) 100%);
    color: white;
    border-color: var(--user-bubble-border-color);
    margin-left: auto;
}

.ai-message-container {
    align-items: flex-start;
}

/* Welcome Message */
.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--welcome-message-color);
}

.welcome-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--welcome-title-color);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.welcome-subtitle {
    font-size: 16px;
    margin-bottom: 40px;
    color: var(--welcome-subtitle-color);
}

.suggestion-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.suggestion-card {
    background: var(--suggestion-card-bg);
    border: 1px solid var(--suggestion-card-border);
    border-radius: 16px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 16px var(--suggestion-card-shadow);
    width: 100%;
}

.suggestion-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--suggestion-card-before-bg-gradient-start) 0%, var(--suggestion-card-before-bg-gradient-end) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.suggestion-card:hover {
    border-color: var(--suggestion-card-hover-border-color);
    box-shadow: 0 12px 40px var(--suggestion-card-hover-shadow);
    transform: translateY(-4px);
}

.suggestion-card:hover::before {
    transform: scaleX(1);
}

.suggestion-title {
    font-weight: 600;
    color: var(--suggestion-title-color);
    margin-bottom: 8px;
    font-size: 16px;
}

.suggestion-text {
    color: var(--suggestion-text-color);
    font-size: 14px;
    line-height: 1.5;
}

/* Input Area */
.input-area {
    padding: 24px 32px;
    background: var(--input-area-bg);
    border-top: 1px solid var(--input-area-border-top);
    backdrop-filter: blur(15px);
}

.input-container {
    position: relative;
    background: var(--input-container-bg);
    border: 2px solid var(--input-container-border);
    border-radius: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px var(--input-container-shadow);
    backdrop-filter: blur(5px);
}

.input-container:focus-within {
    border-color: var(--input-container-focus-border);
    box-shadow: 0 0 0 4px var(--input-container-focus-shadow);
    transform: translateY(-2px);
}

.chat-input {
    width: 100%;
    min-height: 56px;
    max-height: 120px;
    padding: 16px 60px 16px 20px;
    border: none;
    border-radius: 14px;
    font-size: 16px;
    line-height: 1.5;
    resize: none;
    outline: none;
    background: transparent;
    color: var(--chat-input-color);
    font-family: 'Inter', sans-serif;
}

.chat-input::placeholder {
    color: var(--chat-input-placeholder-color);
}

.send-button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--send-button-bg-gradient-start) 0%, var(--send-button-bg-gradient-end) 100%);
    border: none;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--send-button-shadow);
}

.send-button:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--send-button-hover-bg-gradient-start) 0%, var(--send-button-hover-bg-gradient-end) 100%);
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 6px 20px var(--send-button-hover-shadow);
}

.send-button:disabled {
    background: var(--send-button-disabled-bg);
    cursor: not-allowed;
    transform: translateY(-50%);
    box-shadow: none;
}

/* Loading Indicator */
.loading-indicator {
    display: none;
    padding: 20px 24px;
    color: var(--loading-indicator-color);
    font-size: 14px;
    font-style: italic;
    background: var(--loading-indicator-bg);
    border: 1px solid var(--loading-indicator-border);
    border-radius: 16px;
    margin-bottom: 32px;
    box-shadow: 0 4px 16px var(--loading-indicator-shadow);
    animation: pulse-slow 2s infinite;
    display: flex;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(8px);
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Code Styling */
.message-bubble pre {
    background: var(--code-block-bg);
    border: 1px solid var(--code-block-border);
    border-radius: 12px;
    padding: 16px;
    overflow-x: auto;
    margin: 16px 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--code-block-color);
}

.message-bubble code {
    background: var(--inline-code-bg);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 14px;
    font-family: 'Monaco', 'Menlo', monospace;
    color: var(--inline-code-color);
}

.message-bubble pre code {
    background: transparent;
    padding: 0;
}

.message-bubble ul, .message-bubble ol {
    margin: 16px 0;
    padding-left: 24px;
}

.message-bubble li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Link styling within message bubbles */
.message-bubble a {
    color: var(--link-color);
    text-decoration: underline;
}

/* Service link button styling */
.service-link-button { /* Renamed class for clarity */
    display: inline-block;
    padding: 8px 15px;
    margin-top: 10px;
    background: linear-gradient(135deg, var(--service-button-bg-gradient-start) 0%, var(--service-button-bg-gradient-end) 100%);
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 12px var(--service-button-shadow);
    margin-right: 10px; /* Add spacing between buttons */
    margin-bottom: 10px; /* Add spacing for wrapping buttons */
}

.service-link-button:hover {
    background: linear-gradient(135deg, var(--service-button-hover-bg-gradient-start) 0%, var(--service-button-hover-bg-gradient-end) 100%);
    box-shadow: 0 6px 20px var(--service-button-hover-shadow);
    transform: translateY(-1px);
}

/* Container for contact buttons */
.contact-buttons-container {
    display: flex;
    flex-wrap: wrap; /* Allow buttons to wrap to next line */
    gap: 10px; /* Space between buttons */
    margin-top: 15px; /* Space above the button group */
    justify-content: flex-start; /* Align buttons to the start */
}


/* Mobile Styles */
@media (max-width: 768px) {
    .app-container {
        margin: 0;
        border-radius: 0;
    }

    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        height: 100vh;
        height: 100dvh;
        z-index: 1000;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .sidebar.open {
        transform: translateX(280px);
    }

    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.7);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .sidebar-overlay.show {
        opacity: 1;
        visibility: visible;
    }

    .chat-area {
        width: 100%;
    }

    .menu-btn {
        display: flex !important;
    }

    .chat-header {
        padding: 16px 20px;
    }

    .chat-title {
        font-size: 18px;
    }

    .chat-messages {
        padding: 20px 16px;
    }

    .input-area {
        padding: 16px 20px;
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }

    .chat-input {
        font-size: 16px;
        min-height: 48px;
        padding: 14px 56px 14px 16px;
    }

    .send-button {
        width: 36px;
        height: 36px;
        right: 10px;
    }

    .suggestion-cards {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 0 16px;
    }

    .message-bubble {
        max-width: 90%;
        padding: 16px 20px;
    }

    .welcome-message {
        padding: 40px 16px;
    }

    .welcome-title {
        font-size: 24px;
    }

    .welcome-subtitle {
        font-size: 14px;
    }

    .control-btn, .send-button, .new-chat-btn {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Tablet Styles */
@media (max-width: 1024px) and (min-width: 769px) {
    .sidebar {
        width: 240px;
    }

    .chat-messages {
        padding: 24px;
    }

    .input-area {
        padding: 20px 24px;
    }
}

/* Desktop Styles (larger than 768px) */
@media (min-width: 769px) {
    .input-area {
        padding-bottom: 40px;
    }
}