:root {
    --primary-color: #2b5278;
    --secondary-color: #17212b;
    --bg-color: #e7ebf0;
    --chat-bg: #ffffff;
    --message-out-bg: #eeffde;
    --message-in-bg: #ffffff;
    --border-color: #d2dbe3;
    --text-primary: #000000;
    --text-secondary: #707579;
    --danger-color: #e53935;
    --success-color: #4caf50;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    height: 100vh;
    overflow: hidden;
}

#app {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    font-size: 18px;
    color: var(--text-secondary);
}