* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    background: linear-gradient(135deg, #0f0f23 0%, #1a0033 100%); 
    color: #e2e2e2; 
    font-family: 'Courier New', monospace; 
    min-height: 100vh;
    overflow-x: hidden;
}
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
header h1 { text-align: center; color: #4ade80; margin-bottom: 20px; font-size: 2rem; }
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 30px; }
.tab-btn { 
    background: rgba(74,222,128,0.2); border: 1px solid #4ade80; color: #e2e2e2; 
    padding: 12px 20px; border-radius: 25px; cursor: pointer; transition: all 0.3s; 
    font-family: inherit; font-size: 1rem;
}
.tab-btn:hover, .tab-btn.active { background: #4ade80; color: #0f0f23; box-shadow: 0 0 20px #4ade80; }
.tab-content { display: none; animation: fadeIn 0.5s; }
.tab-content.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 30px; }
.card { background: rgba(0,0,0,0.5); border: 1px solid #4ade80; border-radius: 15px; padding: 20px; text-align: center; }
.card h3 { color: #4ade80; margin-bottom: 10px; }
.card button { background: #4ade80; color: #0f0f23; border: none; padding: 10px 20px; border-radius: 20px; cursor: pointer; }

/* Chat */
.chat-container { height: 500px; display: flex; flex-direction: column; border: 1px solid #4ade80; border-radius: 15px; overflow: hidden; }
#chatMessages { flex: 1; overflow-y: auto; padding: 20px; background: rgba(0,0,0,0.7); }
.message { margin-bottom: 15px; padding: 10px; border-radius: 10px; }
.message.user { background: #4ade80; color: #0f0f23; margin-left: 20%; }
.message.assistant { background: rgba(74,222,128,0.2); margin-right: 20%; }
.chat-input { display: flex; padding: 20px; background: #0f0f23; }
#chatInput { flex: 1; background: rgba(255,255,255,0.1); border: 1px solid #4ade80; color: #e2e2e2; padding: 15px; border-radius: 25px; }
.chat-input button { background: #4ade80; border: none; color: #0f0f23; padding: 15px 20px; border-radius: 25px; margin-left: 10px; cursor: pointer; }

/* Code */
textarea, pre, #terminalOutput { background: #000; border: 1px solid #4ade80; border-radius: 10px; padding: 20px; font-family: inherit; font-size: 14px; }
#codePrompt { width: 100%; height: 100px; resize: vertical; color: #e2e2e2; }
select { background: rgba(255,255,255,0.1); border: 1px solid #4ade80; color: #e2e2e2; padding: 10px; border-radius: 10px; }
pre code { color: #4ade80; }

/* Terminal */
.terminal { height: 400px; overflow-y: auto; background: #000; padding: 20px; white-space: pre-wrap; }
.terminal-input { display: flex; margin-top: 10px; }
.terminal-input span { color: #4ade80; margin-right: 10px; }
#termInput { flex: 1; background: transparent; border: none; color: #e2e2e2; outline: none; }

/* Memory & Upload */
pre { max-height: 400px; overflow-y: auto; }
.upload-zone { border: 2px dashed #4ade80; border-radius: 15px; padding: 40px; text-align: center; cursor: pointer; transition: all 0.3s; }
.upload-zone:hover { background: rgba(74,222,128,0.1); box-shadow: 0 0 30px #4ade80; }

/* Mobile */
@media (max-width: 768px) { .container { padding: 10px; } header h1 { font-size: 1.5rem; } .tabs { flex-direction: column; } .tab-btn { width: 100%; } }