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

:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #131920;
    --bg-tertiary: #1a2129;
    --accent-primary: #00ff9f;
    --accent-secondary: #00d4ff;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --border-color: #2d3541;
    --glow: 0 0 20px rgba(0, 255, 159, 0.3);
    --glow-strong: 0 0 30px rgba(0, 255, 159, 0.5);
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Animated grid background */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 255, 159, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 159, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2rem 1rem;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.hex-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-primary);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.agent-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: var(--glow);
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.messages::-webkit-scrollbar {
    width: 8px;
}

.messages::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

.messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.messages::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* System Message */
.system-message {
    display: flex;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-primary);
    border-radius: 8px;
    font-size: 0.95rem;
    animation: slideIn 0.5s ease-out;
}

.system-icon {
    color: var(--accent-primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.system-text {
    line-height: 1.6;
}

/* Message bubbles */
.message {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    animation: slideIn 0.3s ease-out;
}

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

.message-header {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.message-content {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message.user .message-content {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    color: var(--bg-primary);
    align-self: flex-end;
    max-width: 80%;
    font-weight: 500;
}

.message.assistant .message-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.message.loading .message-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-style: italic;
}

.typing-indicator {
    display: flex;
    gap: 0.4rem;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: typing 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* Input Area */
.input-area {
    padding: 1.5rem 2rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.input-wrapper {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

#messageInput {
    flex: 1;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

#messageInput:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: var(--glow);
}

.send-button {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    border: none;
    border-radius: 8px;
    color: var(--bg-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.send-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-strong);
}

.send-button:active {
    transform: translateY(0);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.send-button svg {
    width: 20px;
    height: 20px;
}

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

.clear-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.clear-button:hover {
    color: var(--accent-primary);
}

.model-info {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem 0.5rem;
    }

    .header {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .logo {
        flex-direction: column;
    }

    .messages {
        padding: 1rem;
    }

    .input-area {
        padding: 1rem;
    }

    .message.user .message-content {
        max-width: 90%;
    }
}