/* General Body Styles */
:root {
    /* Brand & Action Colors */
    --primary-color: #408000; /* Main green */
    --primary-dark: #1b590c;
    --primary-light: #499300;
    --primary-gradient: linear-gradient(to right, #4f9d00, #428500);
    --danger-color: #d94848; /* For recording and warnings */
    --danger-hover: #b93838;
    --end-call-color: #FF4136;

    /* Text Colors */
    --text-light: #333;
    --text-dark: #f4f4f9;
    --text-on-primary: #fff;

    /* Background & Surface Colors (Light Mode) */
    --background-light: #f4f4f9;
    --surface-light: #fff;
    --surface-muted-light: #f9f9f9;
    --ai-message-light: #e5e5ea;

    /* Background & Surface Colors (Dark Mode) */
    --background-dark: #121212;
    --surface-dark: #1e1e1e;
    --surface-accent-dark: #272727; /* For hovers, side menu */
    --surface-muted-dark: #2c2c2c;
    --ai-message-dark: #3a3a3c;
    --header-dark: #333;
    --hover-dark: #575757;

    /* Component-specific Colors */
    --border-light: #e0e0e0;
    --border-dark: #444;
    --toggle-switch-light: #ccc;
    --status-dot-light: #bbb;
    --pill-btn-light: rgba(128, 128, 128, 0.2);
    --pill-btn-dark: rgba(255, 255, 255, 0.1);

    /* Shadows */
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.2);
    --primary-glow: rgba(64, 128, 0, 0.5);
    --primary-glow-strong: rgba(64, 128, 0, 0.7);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-light);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: var(--text-light);
    background-image: url('https://www.transparenttextures.com/patterns/cubes.png');
    transition: background-color 0.3s, color 0.3s;
}

/* Dark Mode */
body.dark-mode {
    background-color: var(--background-dark);
    color: var(--text-dark);
}

.chat-container {
    width: 100vw;
    height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--surface-light);
    box-shadow: 0 10px 30px var(--shadow-light);
}

body.dark-mode .chat-container {
    background-color: var(--surface-dark);
}

.chat-header {
    background: var(--primary-gradient);
    color: var(--text-on-primary);
    padding: 20px 25px;
    font-size: 1.6em;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid transparent;
    text-shadow: 1px 1px 2px var(--shadow-medium);
}

body.dark-mode .chat-header {
    background: var(--header-dark);
    border-bottom: 1px solid var(--border-dark);
}

.menu-btn, .dark-mode-btn {
    background: none;
    border: none;
    color: var(--text-on-primary);
    font-size: 1.6em;
    cursor: pointer;
    transition: transform 0.2s;
}

.menu-btn:hover, .dark-mode-btn:hover {
    transform: scale(1.1);
}

.chat-box {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.user-message, .ai-message {
    padding: 12px 20px;
    border-radius: 25px;
    max-width: 75%;
    line-height: 1.6;
    animation: fadeInUp 0.5s ease-in-out;
    box-shadow: 0 4px 8px var(--shadow-light);
    word-wrap: break-word;
}

.user-message {
    background-color: var(--primary-color);
    color: var(--text-on-primary);
    align-self: flex-end;
    border-bottom-right-radius: 8px;
}

.ai-message {
    background-color: var(--ai-message-light);
    color: var(--text-light);
    align-self: flex-start;
    border-bottom-left-radius: 8px;
}

body.dark-mode .ai-message {
    background-color: var(--ai-message-dark);
    color: var(--text-dark);
}

.input-container {
    display: flex;
    padding: 15px;
    border-top: 1px solid var(--border-light);
    background-color: var(--surface-muted-light);
}

body.dark-mode .input-container {
    border-top: 1px solid var(--border-dark);
    background-color: var(--surface-muted-dark);
}

#user-input {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid var(--border-light);
    border-radius: 25px;
    margin-right: 10px;
    outline: none;
    font-size: 1em;
    transition: border-color 0.3s;
}

#user-input:focus {
    border-color: var(--primary-color);
}

body.dark-mode #user-input {
    background-color: var(--ai-message-dark);
    border-color: var(--border-dark);
    color: var(--text-dark);
}

#send-btn {
    background-color: var(--primary-dark);
    color: var(--text-on-primary);
    border: none;
    border-radius: 20px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1em;
}

#mic-btn {
    background-color: var(--primary-light);
    color: var(--text-on-primary);
    border: none;
    border-radius: 20px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1em;
    margin: 0 5px;
}

#send-btn:hover, #mic-btn:hover {
    background-color: var(--surface-accent-dark);
    transform: scale(1.05);
}

#mic-btn.recording {
    background-color: var(--danger-color);
}

#mic-btn.voice-active {
    background-color: var(--surface-accent-dark);
}

#mic-btn.recording:hover {
    background-color: var(--danger-hover);
}

/* Side Menu */
.side-menu {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    background-color: var(--surface-accent-dark);
    overflow-x: hidden;
    overflow-y: auto;
    transition: 0.5s;
    padding-block: 60px 20px;
    color: var(--text-on-primary);
    pointer-events: none;
    box-sizing: border-box;
    box-shadow: 5px 0 15px var(--shadow-medium);
}
body.dark-mode .side-menu {
    background-color: var(--surface-accent-dark);
}

.side-menu.side-menu-open {
    width: 300px;
    pointer-events: auto;
}

.side-menu a {
    padding: 12px 20px;
    text-decoration: none;
    font-size: 1.2em;
    color: var(--text-on-primary);
    display: block;
    transition: 0.3s;
    border-radius: 5px;
    margin: 5px 15px;
}

.side-menu a:hover {
    background-color: var(--hover-dark);
}

.side-menu .close-btn {
    position: absolute;
    top: 15px;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}

.side-menu h2 {
    padding: 0 20px;
    font-weight: 600;
}

.side-menu .setting {
    padding: 10px 20px;
}

.side-menu label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9em;
    opacity: 0.8;
}

.side-menu input, .side-menu select {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid var(--border-dark);
    background-color: var(--border-dark);
    color: var(--text-on-primary);
    box-sizing: border-box;
}

.side-menu button {
    margin: 15px 0;
    padding: 12px 18px;
    width: 100%;
    border-radius: 5px;
    border: none;
    background-color: var(--primary-color);
    color: var(--text-on-primary);
    cursor: pointer;
    box-sizing: border-box;
    transition: background-color 0.3s;
}

.side-menu button:hover {
    background-color: var(--surface-accent-dark);
}

.status-dot {
    height: 12px;
    width: 12px;
    background-color: var(--status-dot-light);
    border-radius: 50%;
    display: inline-block;
    margin-left: 10px;
    vertical-align: middle;
}

/* TTS Toggle Switches */
#browser-tts-toggle, #ai-tts-toggle, #groq-tts-toggle {
    appearance: none;
    width: 3em;
    height: 1.5em;
    background-color: var(--toggle-switch-light);
    border-radius: 1.5em;
    position: relative;
    cursor: pointer;
    transition: background-color 0.3s;
}

#browser-tts-toggle::before, #ai-tts-toggle::before, #groq-tts-toggle::before {
    content: '';
    width: 1.2em;
    height: 1.2em;
    background-color: var(--surface-light);
    border-radius: 50%;
    position: absolute;
    top: 0.15em;
    left: 0.15em;
    transition: transform 0.3s;
}

#browser-tts-toggle:checked, #ai-tts-toggle:checked, #groq-tts-toggle:checked {
    background-color: var(--primary-color);
}

#browser-tts-toggle:checked::before, #ai-tts-toggle:checked::before, #groq-tts-toggle:checked::before {
    transform: translateX(1.5em);
}

/* Call UI Overlay */
.call-ui-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-light);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    z-index: 200;
    opacity: 1;
    transition: opacity 0.5s ease;
    padding: 20px;
    box-sizing: border-box;
}

body.dark-mode .call-ui-overlay {
    background-color: var(--background-dark);
}

.call-ui-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Top Bar */
.call-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0 15px;
    box-sizing: border-box;
    flex-shrink: 0;
}

.top-bar-title, #call-timer {
    font-weight: 600;
    font-size: 1.1em;
}

.top-bar-buttons {
    display: flex;
    gap: 10px;
}

.pill-btn {
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--border-light);
    background-color: var(--pill-btn-light);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
    font-weight: 500;
}
body.dark-mode .pill-btn {
    border-color: var(--border-dark);
    background-color: var(--pill-btn-dark);
}
.pill-btn:hover {
    transform: scale(1.05);
}

.end-call-btn {
    background-color: var(--end-call-color);
    color: var(--text-on-primary);
    border: none;
}

/* Center Stage */
.call-center-stage {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: var(--primary-color);
    box-shadow: 0 0 20px var(--primary-glow);
}
.avatar.speaking {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 20px 0 var(--primary-glow); }
    50% { box-shadow: 0 0 35px 15px var(--primary-glow-strong); }
    100% { box-shadow: 0 0 20px 0 var(--primary-glow); }
}

#waveform-canvas {
    max-width: 100%;
}

/* Live Transcript */
.live-transcript-container {
    width: 100%;
    height: 25%;
    overflow-y: auto;
    display: flex;
    flex-direction: column-reverse; /* Newest messages at the bottom */
    padding: 10px;
    box-sizing: border-box;
}

.live-transcript-container .user-message,
.live-transcript-container .ai-message {
    opacity: 0;
    animation: fadeIn 0.5s forwards;
    margin-bottom: 10px;
}

/* Volume Slider */
#browser-tts-volume {
    width: calc(100% - 30px);
}

/* AI TTS Settings */
.side-menu h3 {
    padding: 10px 20px;
    margin-top: 15px;
    border-top: 1px solid var(--border-dark);
}

#ai-tts-model-select:disabled,
#ai-tts-voice-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomIn {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.05);
    }
}