:root {
    --bg-color: #0d1117;
    --text-color: #e6edf3;
    --accent-blue: #58a6ff;
    --accent-green: #2ea043;
    --accent-red: #da3633;
    --panel-bg: #161b22;
    --border-color: #30363d;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Landing Page */
#landing {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    height: 100%;
    gap: 20px;
}

.role-btn {
    padding: 20px 40px;
    font-size: 2rem;
    cursor: pointer;
    background-color: var(--panel-bg);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    border-radius: 8px;
    transition: all 0.2s;
}

.role-btn:hover {
    background-color: var(--accent-blue);
    color: white;
}

/* Views */
.view {
    display: none;
    height: 100%;
    flex-direction: column;
}

.header {
    background-color: var(--panel-bg);
    padding: 10px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    background-color: var(--bg-color);
}

.chat-panel:last-child {
    border-right: none;
}

.panel-title {
    text-align: center;
    padding: 10px;
    background: var(--panel-bg);
    font-weight: bold;
    border-bottom: 1px solid var(--border-color);
}

.messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 8px;
    word-wrap: break-word;
    font-size: 1.1rem;
}

.msg-out {
    align-self: flex-end;
    background-color: var(--accent-blue);
    color: white;
}

.msg-in {
    align-self: flex-start;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
}

.input-area {
    padding: 15px;
    background: var(--panel-bg);
    display: flex;
    gap: 10px;
}

textarea {
    flex: 1;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: #0d1117;
    color: white;
    font-size: 1rem;
    resize: none;
    height: 50px;
}

button.send-btn {
    padding: 0 20px;
    background-color: var(--accent-green);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

/* Specific Roles */
/* Judge View */
#judge-view .container {
    flex-direction: row;
}

/* Projector View */
#projector-view .messages {
    font-size: 2rem; /* Huge for projector */
}

#projector-view .message {
    font-size: 1.5rem;
    max-width: 90%;
    margin-bottom: 15px;
}

#projector-view .panel-title {
    font-size: 1.5rem;
}

.system-msg {
    text-align: center;
    color: #8b949e;
    font-style: italic;
    font-size: 0.9rem;
}

/* User A/B colors in Projector/Judge */
.msg-A { border-left: 5px solid var(--accent-red); }
.msg-B { border-left: 5px solid var(--accent-blue); }