:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --user-bubble: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    --assistant-bubble: rgba(51, 65, 85, 0.8);
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Background Blobs */
.bg-blobs {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--primary);
    filter: blur(100px);
    opacity: 0.15;
    border-radius: 50%;
    animation: move 20s infinite alternate;
}

.blob-1 { top: -100px; left: -100px; }
.blob-2 { bottom: -100px; right: -100px; background: #ec4899; }

@keyframes move {
    from { transform: translate(0, 0); }
    to { transform: translate(100px, 100px); }
}

/* Glassmorphism Container */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.container {
    width: 95%;
    max-width: 800px;
    height: 90vh;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--glass-border);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
}

.memory-counter {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--glass-border);
}

.memory-counter .label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.memory-counter .count {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
}

/* Chat Area */
#chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--glass-border) transparent;
}

#chat-container::-webkit-scrollbar { width: 6px; }
#chat-container::-webkit-scrollbar-thumb { background: var(--glass-border); border-radius: 10px; }

.message {
    max-width: 75%;
    padding: 1rem 1.25rem;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.6;
    position: relative;
    animation: slideIn 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

@keyframes slideIn {
    from { opacity: 0; transform: scale(0.9) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.user {
    align-self: flex-end;
    background: var(--user-bubble);
    color: white;
    border-bottom-right-radius: 4px;
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
}

.assistant {
    align-self: flex-start;
    background: var(--assistant-bubble);
    color: var(--text-main);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--glass-border);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--assistant-bubble);
    border-radius: 18px;
    width: fit-content;
    margin-bottom: 1rem;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

.hidden { display: none !important; }

/* Input Area */
.input-area {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--glass-border);
    border-bottom-left-radius: 24px;
    border-bottom-right-radius: 24px;
}

.action-buttons {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.btn-secondary {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.input-group {
    display: flex;
    gap: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.5rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

input[type="text"] {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    outline: none;
    font-size: 0.95rem;
}

#send-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

#send-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 640px) {
    .container { height: 100vh; width: 100%; border-radius: 0; }
    .input-area { border-radius: 0; }
    .message { max-width: 85%; }
    header { padding: 1rem; }
}

/* Cognitive Stats Styles */
.cognitive-stats {
    display: flex;
    gap: 1rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem 0.8rem;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--glass-border);
    min-width: 60px;
}

.stat-item .label {
    display: block;
    font-size: 0.6rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.stat-item .count {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
}

#ai-mode {
    color: #ec4899; /* Strategic mode color */
}

.intervention-msg {
    font-style: italic;
    border-right: 3px solid #ec4899;
    padding-right: 10px;
    margin-bottom: 5px;
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
}