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

body {
    font-family: system-ui, sans-serif;
    min-height: 100vh;
    background: #0a0a0a;
    color: #fafafa;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    border-bottom: 1px solid #222;
}

.logo { font-weight: 700; font-size: 1.25rem; }

nav { display: flex; align-items: center; gap: 2rem; }

nav a {
    color: #888;
    text-decoration: none;
    transition: color 0.2s;
}

nav a:hover { color: #fff; }

.server-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #4ade80;
    font-size: 0.85rem;
    font-family: monospace;
    background: rgba(74, 222, 128, 0.1);
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.pulse {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7); }
    50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(74, 222, 128, 0); }
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

/* Chat Container - Terminal Style */
.chat-container {
    width: 100%;
    max-width: 640px;
    background: #111;
    border: 1px solid #2a2a2a;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 500px;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    background: linear-gradient(145deg, #0f1a0f, #111);
    border-bottom: 1px solid #2a2a2a;
}

.terminal-icon {
    color: #4ade80;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-weight: 700;
    font-size: 1rem;
}

.chat-title {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    color: #888;
}

.connection-status {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.75rem;
    color: #666;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: #666;
    border-radius: 50%;
    transition: background 0.3s, box-shadow 0.3s;
}

.status-dot.connected {
    background: #4ade80;
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.5);
}

/* Messages Area */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #111;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #444;
}

.message {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    padding: 0.5rem 0;
    border-bottom: 1px solid #1a1a1a;
}

.message:last-child {
    border-bottom: none;
}

.msg-prefix {
    font-weight: 600;
    margin-right: 0.75rem;
}

.msg-time {
    color: #444;
    margin-right: 0.75rem;
    font-size: 0.75rem;
}

.msg-text {
    color: #fafafa;
}

.message.sent .msg-prefix {
    color: #a5d6ff;
}

.message.received .msg-prefix {
    color: #d2a8ff;
}

.message.system {
    color: #6a737d;
    font-style: italic;
}

.message.system .msg-text {
    color: #6a737d;
}

.message.error {
    color: #f87171;
}

.message.error .msg-text {
    color: #f87171;
}

.system-message {
    color: #6a737d;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    font-style: italic;
    padding: 0.5rem 0;
}

/* Input Area */
.chat-input-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: #0d0d0d;
    border-top: 1px solid #2a2a2a;
}

.input-prompt {
    color: #4ade80;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-weight: 700;
    font-size: 0.9rem;
}

.chat-input-area input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fafafa;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
}

.chat-input-area input::placeholder {
    color: #444;
}

.chat-input-area button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.3);
    color: #4ade80;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.chat-input-area button:hover:not(:disabled) {
    background: rgba(74, 222, 128, 0.2);
    border-color: rgba(74, 222, 128, 0.5);
}

.chat-input-area button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-icon {
    font-weight: 700;
}

/* Footer */
footer {
    padding: 2rem;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #222;
}

footer a {
    color: #f472b6;
    text-decoration: none;
    font-weight: 600;
}

footer a:hover { text-decoration: underline; }

footer .capybara { font-size: 1.2rem; }

/* Responsive */
@media (max-width: 640px) {
    header {
        padding: 1rem 1.5rem;
    }

    nav {
        gap: 1rem;
    }

    .chat-container {
        height: 400px;
    }

    .server-badge {
        display: none;
    }
}