@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
    --bg-main: #343541;
    --bg-header: #202123;
    --bg-input: #40414f;
    --text-primary: #ececf1;
    --text-secondary: #c5c5d2;
    --accent: #10a37f;
    --accent-hover: #1a7f64;
    --user-msg-bg: #343541;
    --bot-msg-bg: #444654;
    --border: rgba(255,255,255,0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.chat-header {
    background-color: var(--bg-header);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-weight: 600;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(255,255,255,0.05);
    padding: 4px 8px;
    border-radius: 4px;
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.message {
    padding: 1.5rem;
    display: flex;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
}

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

.message.system {
    background-color: var(--bot-msg-bg);
}

.avatar {
    width: 30px;
    height: 30px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.message.user .avatar {
    background-color: #5436DA;
}

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

.content {
    flex: 1;
    line-height: 1.6;
    font-size: 1rem;
    overflow-x: auto;
}

.content p {
    margin-bottom: 1rem;
}

.content p:last-child {
    margin-bottom: 0;
}

.content pre {
    background: #000;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.content code {
    font-family: monospace;
    background: rgba(255,255,255,0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
}

.content pre code {
    background: transparent;
    padding: 0;
}

.chat-input-area {
    padding: 1.5rem;
    background: var(--bg-main);
    background: linear-gradient(180deg, rgba(52,53,65,0) 0%, #343541 50%);
}

#chat-form {
    display: flex;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.5rem;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    align-items: flex-end;
}

#user-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    padding: 0.5rem;
    max-height: 200px;
    outline: none;
    line-height: 1.5;
}

#user-input::placeholder {
    color: var(--text-secondary);
}

#send-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

#send-btn:hover {
    background: var(--accent);
    color: white;
}

#send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: transparent;
}

.cursor {
    display: inline-block;
    width: 6px;
    height: 16px;
    background-color: var(--text-primary);
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
    margin-left: 2px;
}

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

@media (max-width: 768px) {
    .message {
        padding: 1rem;
        gap: 1rem;
    }
}