:root {
    --primary-bg: #f0f2f5;
    --secondary-bg: #ffffff;
    --header-bg: #00a884;
    --user-msg-bg: #d9fdd3;
    --ai-msg-bg: #ffffff;
    --text-dark: #111b21;
    --text-light: #ffffff;
    --border-color: #e9edef;
    --accent-color: #005c4b;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: var(--primary-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.main-container {
    display: flex;
    gap: 20px;
    width: 95%;
    max-width: 1200px;
    height: 90vh;
    max-height: 800px;
}

.chat-app {
    flex: 2;
    display: flex;
    flex-direction: column;
    background-color: var(--secondary-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    overflow: hidden;
    position: relative;
}

#video-feed {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: -1;
    display: none;
}

.body-video-mode .chat-app {
    background-color: rgba(0, 0, 0, 0.4); /* Make chat slightly transparent */
}

.header {
    background-color: var(--header-bg);
    color: var(--text-light);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 1.2rem;
    font-weight: bold;
}
.app-title i { margin-right: 10px; }

.status-indicator {
    font-size: 0.8rem;
    opacity: 0.9;
}

.chat-box {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    background-image: url('https://user-images.githubusercontent.com/15075759/28719144-86dc0f70-73b1-11e7-911d-60d70fcded21.png');
    background-repeat: repeat;
    display: flex;
    flex-direction: column;
}

.message {
    padding: 10px 15px;
    border-radius: 18px;
    margin-bottom: 10px;
    max-width: 70%;
    word-wrap: break-word;
}

.user-message {
    background-color: var(--user-msg-bg);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.ai-message {
    background-color: var(--ai-msg-bg);
    align-self: flex-start;
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}
.error-message {
    background-color: #ffdddd;
    color: #d8000c;
    align-self: center;
    max-width: 80%;
    text-align: center;
}

.input-area {
    display: flex;
    padding: 10px;
    background-color: var(--primary-bg);
    border-top: 1px solid var(--border-color);
}

#text-input {
    flex-grow: 1;
    border: none;
    padding: 12px 15px;
    border-radius: 20px;
    font-size: 1rem;
}
#text-input:focus { outline: none; }

.control-btn {
    background: var(--header-bg);
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    margin-left: 10px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background-color 0.2s;
}
.control-btn:hover { background-color: var(--accent-color); }
#mic-btn.listening { background-color: #ff4d4d; }

.controls-panel {
    flex: 1;
    background: var(--secondary-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.controls-panel h3, .controls-panel h4 {
    margin-top: 0;
    color: var(--accent-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.mode-switcher {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.mode-btn {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--header-bg);
    background: white;
    color: var(--header-bg);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
}
.mode-btn.active, .mode-btn:hover {
    background: var(--header-bg);
    color: white;
}

.control-section {
    margin-top: 20px;
}
.hidden { display: none !important; }

/* Toggle Switch */
.toggle-switch { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.switch { position: relative; display: inline-block; width: 60px; height: 34px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; }
.slider.round { border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 26px; width: 26px; left: 4px; bottom: 4px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--header-bg); }
input:checked + .slider:before { transform: translateX(26px); }

/* TTS Sliders */
.tts-settings { display: flex; flex-direction: column; gap: 10px; }
.tts-settings label { font-weight: bold; }
.tts-settings input[type="range"] { width: 100%; }

/* Loading Indicator */
.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.8);
}
.spinner {
    border: 4px solid rgba(0,0,0,0.1);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border-left-color: var(--header-bg);
    animation: spin 1s ease infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.modal-content {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}
#close-modal-btn {
    background: var(--header-bg);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 15px;
    font-size: 1rem;
}