:root {
    --primary-color: #045568;
    --accent-color: #F8D419;
    --background-color: #FFFFFF;
    --text-color: #333333;
    --light-text-color: #666666;
    --border-color: #E0E0E0;
    --user-message-bg: #F0F2F5;
    --agent-message-bg: #FFFFFF;
    --sidebar-bg: #F7F9FA;
    --font-family: 'Inter', sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    overflow: hidden;
    display: flex;
    height: 100vh;
}

/* Hamburger Icon Styling */
.menu-toggle-btn {
    display: none; /* Hidden by default, shown in media query */
    background: transparent;
    border: none;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    padding: 0; /* Adjust padding to be controlled by inner elements */
    margin-right: 8px;
    z-index: 1100;
    width: 40px; /* Make button area larger for easier tap */
    height: 40px;
}

.hamburger-icon {
    width: 24px;
    height: 20px;
    position: relative;
    transform: rotate(0deg);
    transition: .5s ease-in-out;
    cursor: pointer;
}

.hamburger-icon span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: var(--primary-color);
    border-radius: 9px;
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: .25s ease-in-out;
}

.hamburger-icon span:nth-child(1) {
    top: 0px;
}

.hamburger-icon span:nth-child(2) {
    top: 8px;
}

.hamburger-icon span:nth-child(3) {
    top: 16px;
}

/* Transform to cross when sidebar is open */
.sidebar-open .hamburger-icon span:nth-child(1) {
    top: 8px;
    transform: rotate(135deg);
}

.sidebar-open .hamburger-icon span:nth-child(2) {
    opacity: 0;
    left: -60px; /* Move out of view */
}

.sidebar-open .hamburger-icon span:nth-child(3) {
    top: 8px;
    transform: rotate(-135deg);
}


.sidebar-overlay {
    display: none;
}


/* --- Main Layout --- */
.chat-container {
    display: flex;
    width: 100%;
    height: 100%;
}

.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
    padding-top: 20px; /* Added padding to top for logo alignment */
}

/* Adjust logo spacing */
.sidebar img {
    margin: auto; /* Center the image horizontally */
    display: block; /* Ensure it behaves as a block element for margin:auto */
    margin-bottom: 20px; /* Space below the logo */
}

.sidebar-footer { /* Changed class to sidebar-footer */
    padding: 20px;
    border-top: 1px solid var(--border-color); /* Added border to top for footer separation */
    margin-top: auto; /* Pushes the footer to the bottom */
}

.chat-history-nav {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0 12px; /* Adjusted padding */
}

.chat-history-nav .no-history {
    color: var(--light-text-color);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
}

.chat-main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: var(--background-color);
    min-width: 0;
}

.chat-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.chat-header .header-left {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
}

.chat-header .header-text {
    min-width: 0;
    flex: 1 1 auto;
}

.chat-header h3 {
    margin: 0;
    font-size: 1.2rem;
    color: var(--primary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-header p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--light-text-color);
    white-space: normal;
    overflow: hidden;
    text-overflow: ellipsis;
}

.token-counter {
    font-size: 0.9rem;
    color: var(--light-text-color);
    background-color: var(--user-message-bg);
    padding: 8px 12px;
    border-radius: 8px;
    flex-shrink: 0;
    margin-left: auto;
}

.chat-box {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px 40px;
}

.message {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    max-width: 80%;
    align-items: flex-start;
}

.message .avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.message .text-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}

.message .text {
    padding: 15px;
    border-radius: 12px;
    line-height: 1.6;
    font-size: 0.95rem;
    white-space: pre-wrap;
    width: fit-content;
    word-break: break-word;
    margin-top: 5px;
}

.message.agent {
    align-self: flex-start;
}

.message.agent .avatar {
    background-color: var(--primary-color);
    color: white;
}

.message.agent .text {
    background-color: var(--agent-message-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.message.agent .text.error {
    color: #D8000C;
    background-color: #FFD2D2;
}

.message.user {
    margin-left: auto;
    flex-direction: row-reverse;
}

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

.message.user .avatar {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.message.user .text {
    background-color: var(--user-message-bg);
}

/* Updated styles for timestamp */
.message-timestamp {
    font-size: 0.75em;
    color: var(--light-text-color);
    margin-bottom: 2px;
    opacity: 0.8;
    width: 100%;
}

.message.user .message-timestamp {
    text-align: right;
}

.message.agent .message-timestamp {
    text-align: left;
}


.token-info {
    font-size: 0.75rem;
    color: var(--light-text-color);
    padding-top: 4px;
    margin-top: 5px;
}

.token-info .token-highlight {
    color: var(--primary-color);
    font-weight: 700;
    background: var(--accent-color);
    border-radius: 4px;
    padding: 1px 6px;
    margin-left: 2px;
}

.typing-indicator-container {
    padding: 0 40px;
}

.typing-indicator {
    display: flex;
    align-items: center;
    padding: 15px;
}

.typing-indicator span {
    height: 8px;
    width: 8px;
    margin: 0 2px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: inline-block;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {

    0%,
    80%,
100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1.0);
    }
}

.log-viewer {
    background-color: #2b2b2b;
    border-top: 1px solid var(--border-color);
    margin: 0 40px;
    padding: 10px 20px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.log-viewer h4 {
    margin: 5px 0 10px 0;
    color: #00aaff;
    font-size: 0.9rem;
    font-weight: 600;
    border-bottom: 1px solid #444;
    padding-bottom: 8px;
}

#log-output {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85em;
    color: #ddd;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 200px;
    overflow-y: auto;
    background: transparent;
    padding: 0;
    margin: 0;
}

.chat-footer {
    padding: 20px 40px;
    border-top: 1px solid var(--border-color);
    background: var(--background-color);
}

.chat-form {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: #fff;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 5px;
    transition: box-shadow 0.2s;
}

.chat-form:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(4, 85, 104, 0.1);
}

.chat-form textarea {
    flex-grow: 1;
    border: none;
    outline: none;
    padding: 12px;
    font-family: var(--font-family);
    font-size: 1rem;
    resize: none;
    background: transparent;
    max-height: 150px;
    overflow-y: auto;
}

.chat-form button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.chat-form button:hover {
    background-color: #034250;
}

.chat-form button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.footer-text {
    text-align: center;
    font-size: 0.75rem;
    color: var(--light-text-color);
    margin-top: 10px;
}

.sidebar-footer .new-chat-button {
    width: 100%;
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: #fff;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s, border-color 0.2s;
}

.sidebar-footer .new-chat-button:hover {
    background-color: var(--user-message-bg);
    border-color: #ccc;
}

/* History heading styling */
.chat-history-nav h3 {
    padding: 0 15px 5px;
    font-size: 1.1rem; /* Bigger */
    color: var(--text-color); /* Darker */
    text-transform: uppercase;
    font-weight: 700; /* Bolder */
    margin-top: 15px; /* Spacing from logo */
    margin-bottom: 10px; /* Space below heading */
}

.chat-history-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.chat-history-nav li {
    padding: 12px 15px; /* Slightly increased padding */
    margin: 6px 0; /* Increased margin for separation */
    font-size: 0.95rem; /* Slightly larger font */
    border-radius: 8px; /* Slightly more rounded */
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background-color 0.2s, color 0.2s;
}

.chat-history-nav li:hover {
    background-color: var(--user-message-bg);
    color: var(--primary-color);
}

.chat-history-nav li.active {
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
}

.btn {
    text-transform: uppercase !important;
    font-size: 15px !important;
    font-weight: 400 !important;
    height: 43px !important;
    cursor: pointer !important;
    background-color: #F1D12D !important;
    color: #045568 !important;
    font-weight: 500 !important;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        width: 260px;
        top: 0;
        height: 100%;
        z-index: 1000;
        transition: left 0.3s ease-in-out;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        border-right: 1px solid var(--border-color);
    }

    .sidebar.sidebar-open {
        left: 0;
    }

    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: none;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .chat-header {
        padding-left: 15px;
        padding-right: 15px;
    }

    .chat-box,
    .chat-footer {
        padding-left: 20px;
        padding-right: 20px;
    }

    .log-viewer {
        margin-left: 20px;
        margin-right: 20px;
    }

    .message {
        max-width: 95%;
    }

    .menu-toggle-btn {
        display: flex !important; /* Always display hamburger on mobile */
        order: -1;
        padding: 8px; /* Original padding restored */
        margin-right: 5px;
        color: var(--primary-color);
        flex-shrink: 0;
    }

    /* .menu-toggle-btn svg {
        stroke: var(--primary-color);
    } */ /* This rule is no longer needed as we're using spans for the icon */

    .chat-header p {
         white-space: normal;
    }
}