/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #09090b;
    color: #fafafa;
    height: 100vh;
    display: flex;
    overflow: hidden;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: #18181b;
    border-right: 1px solid #27272a;
    display: flex;
    flex-direction: column;
    padding: 24px;
    gap: 24px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header .logo {
    font-size: 24px;
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.settings-group label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #a1a1aa;
    font-weight: 500;
}

.settings-group input {
    background-color: #09090b;
    border: 1px solid #27272a;
    padding: 10px 12px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.settings-group input:focus {
    border-color: #6366f1;
}

.help-text {
    font-size: 11px;
    color: #71717a;
    line-height: 1.4;
}

.info-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.info-group h3 {
    font-size: 13px;
    font-weight: 600;
    color: #a1a1aa;
}

.info-group p {
    font-size: 12px;
    color: #71717a;
    line-height: 1.5;
}

.sidebar-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #a1a1aa;
    border-top: 1px solid #27272a;
    padding-top: 16px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px #22c55e;
}

/* Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: #09090b;
    position: relative;
}

.chat-header {
    padding: 20px 24px;
    border-bottom: 1px solid #27272a;
    background-color: #09090bc0;
    backdrop-filter: blur(12px);
    z-index: 10;
}

.chat-header h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.chat-header p {
    font-size: 13px;
    color: #71717a;
}

/* Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    gap: 16px;
    max-width: 85%;
    animation: fadeIn 0.3s ease-out;
}

.message.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message .avatar {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background-color: #27272a;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.message.user-message .avatar {
    background-color: #6366f1;
}

.message-content {
    background-color: #18181b;
    border: 1px solid #27272a;
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.6;
    color: #e4e4e7;
    overflow-x: auto;
}

.message.user-message .message-content {
    background-color: #27272a;
    border-color: #3f3f46;
}

/* Code Blocks */
pre[class*="language-"] {
    background-color: #0c0c0e !important;
    border: 1px solid #27272a;
    border-radius: 8px;
    margin: 12px 0 !important;
    padding: 12px !important;
}

code[class*="language-"] {
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 13px !important;
}

/* Input Area */
.input-area {
    padding: 24px;
    border-top: 1px solid #27272a;
    background-color: #09090b;
}

#chat-form {
    display: flex;
    background-color: #18181b;
    border: 1px solid #27272a;
    border-radius: 12px;
    padding: 8px 12px;
    align-items: flex-end;
    gap: 8px;
    max-width: 800px;
    margin: 0 auto;
    transition: border-color 0.2s;
}

#chat-form:focus-within {
    border-color: #6366f1;
}

#user-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 14px;
    padding: 8px 4px;
    resize: none;
    max-height: 200px;
    font-family: inherit;
    line-height: 1.5;
}

#send-btn {
    background-color: #6366f1;
    color: #fff;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

#send-btn:hover {
    background-color: #4f46e5;
}

#send-btn:active {
    transform: scale(0.95);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #27272a;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3f3f46;
}