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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    background-color: #343541;
    color: #fff;
}

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

/* Sidebar styles */
.chat-list {
    width: 260px;
    background-color: #202123;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.new-chat {
    background-color: #343541;
    color: #fff;
    border: 1px solid #565869;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.2s;
}

.new-chat:hover {
    background-color: #40414f;
}

#conversations {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    overflow-y: auto;
    flex: 1;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #565869;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#model-selector {
    width: 100%;
    padding: 0.5rem;
    background-color: #343541;
    color: #fff;
    border: 1px solid #565869;
    border-radius: 6px;
    cursor: pointer;
}

#model-selector option {
    background-color: #343541;
    color: #fff;
}

.account-button {
    width: 100%;
    padding: 0.75rem;
    background-color: #343541;
    color: #fff;
    border: 1px solid #565869;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.account-button:hover {
    background-color: #40414f;
}

.chat-item {
    padding: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.chat-item:hover {
    background-color: #343541;
}

.chat-item.active {
    background-color: #343541;
}

/* Main chat area styles */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: calc(100% - 260px);
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.message {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.message.user {
    background-color: #40414f;
}

.message.assistant {
    background-color: #444654;
}

/* Input area styles */
.input-area {
    padding: 1rem 2rem;
    background-color: #343541;
    border-top: 1px solid #565869;
    display: flex;
    gap: 1rem;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

textarea {
    flex: 1;
    background-color: #40414f;
    border: 1px solid #565869;
    border-radius: 6px;
    color: #fff;
    padding: 0.75rem;
    resize: none;
    outline: none;
    font-family: inherit;
}

.input-area button {
    background-color: #10a37f;
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.input-area button:hover {
    background-color: #0e8e6d;
}