:root[data-theme="dark"] {
    --bg-color: #0a0a0a;
    --surface-color: #161616;
    --text-main: #f5f5f5;
    --text-muted: #888888;
    --accent-red: #d32f2f;
    --accent-hover: #b71c1c;
    --border-color: #333333;
    --user-msg-bg: #2a2a2a;
    --ai-msg-bg: #1e1e1e;
}

:root[data-theme="light"] {
    --bg-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-main: #121212;
    --text-muted: #555555;
    --accent-red: #d32f2f;
    --accent-hover: #b71c1c;
    --border-color: #dddddd;
    --user-msg-bg: #e0e0e0;
    --ai-msg-bg: #ffffff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.monospace {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
}

header {
    padding: 1.5rem 2rem;
    border-bottom: 2px solid var(--border-color);
    background-color: var(--surface-color);
}

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

h1 {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 2px;
    border-left: 6px solid var(--accent-red);
    padding-left: 15px;
    text-transform: uppercase;
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
}

#reset-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 5px 10px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
}

#reset-btn:hover {
    color: var(--text-main);
    border-color: var(--text-main);
}

.container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Chat Section */
.chat-section {
    flex: 6;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

#chat-box {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.message {
    max-width: 80%;
    padding: 1rem 1.2rem;
    line-height: 1.5;
    font-size: 1rem;
}

.user-msg {
    align-self: flex-end;
    background-color: var(--user-msg-bg);
    border-radius: 8px 8px 0px 8px;
    border-right: 4px solid var(--text-muted);
}

.ai-msg {
    align-self: flex-start;
    background-color: var(--ai-msg-bg);
    border-radius: 8px 8px 8px 0px;
    border-left: 4px solid var(--accent-red);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.input-area {
    display: flex;
    padding: 1.5rem;
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    gap: 10px;
}

input[type="text"] {
    flex: 1;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 1rem;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    border-radius: 4px;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-red);
}

#send-btn {
    background-color: var(--accent-red);
    color: #fff;
    border: none;
    padding: 0 2rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    letter-spacing: 1px;
}

#send-btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
}

#send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Logic Router */
.logic-router {
    flex: 4;
    padding: 2rem;
    background-color: var(--surface-color);
    overflow-y: auto;
}

.logic-router h2 {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.router-card {
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    background-color: var(--bg-color);
}

.card-header {
    background-color: var(--border-color);
    padding: 0.5rem 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--text-main);
}

.card-content {
    padding: 1rem;
    color: var(--text-muted);
}

.highlight-card {
    border-color: var(--accent-red);
}

.highlight-card .card-header {
    background-color: var(--accent-red);
    color: #fff;
}

/* Loading Dots */
.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 4px;
    background-color: var(--accent-red);
    border-radius: 50%;
    animation: blink 1.4s infinite both;
}
.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink {
    0%, 80%, 100% { opacity: 0; }
    40% { opacity: 1; }
}