:root {
    --bg-color: #0B2240;
    --panel-bg: #0B2240;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --accent-color: #00B2E3;
    --accent-hover: #0056B3;
    --user-msg-bg: #00B2E3;
    --bot-msg-bg: #0056B3;
    --border-color: #E58100;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Background animated orbs for dynamic aesthetic */
.background-orbs {
    display: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite alternate ease-in-out;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: #1163C0;
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: #2EC2E7;
    bottom: -200px;
    right: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: #EAB885;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Main App Container (Glassmorphism) */
.app-container {
    width: 100%;
    max-width: 900px;
    height: 90vh;
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    z-index: 10;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.app-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.app-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.lang-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.lang-selector:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
}

.lang-selector i {
    color: var(--accent-color);
}

.lang-selector select {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    cursor: pointer;
}

.lang-selector select option {
    background: #1e293b;
    color: var(--text-primary);
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 300;
    text-align: left;
}

/* Chat Area */
.chat-container {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
    scroll-behavior: smooth;
}

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

.chat-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

.message {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    max-width: 80%;
    animation: fadeIn 0.4s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bot-message {
    align-self: flex-start;
}

.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    color: var(--accent-color);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-message .avatar {
    background: #3b82f6;
    color: white;
}

.bubble {
    padding: 14px 18px;
    border-radius: 18px;
    font-size: 16px;
    line-height: 1.5;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.bot-message .bubble {
    background: var(--bot-msg-bg);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--border-color);
}

.user-message .bubble {
    background: var(--user-msg-bg);
    border-bottom-right-radius: 4px;
    color: white;
}

/* Input Area */
.input-area {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    align-items: center;
    background: rgba(15, 23, 42, 0.5);
}

.mic-btn, .send-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mic-btn {
    background: var(--bot-msg-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.mic-btn:hover {
    background: rgba(255,255,255,0.1);
}

.mic-btn.listening {
    background: #ef4444;
    color: white;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

#text-input {
    flex: 1;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    padding: 0 20px;
    height: 50px;
    color: var(--text-primary);
    font-size: 16px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

#text-input:focus {
    border-color: var(--accent-color);
}

.send-btn {
    background: var(--accent-color);
    color: white;
}

.send-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

/* Loading Indicator */
.loading {
    display: flex;
    gap: 5px;
    padding: 10px;
}

.loading .dot {
    width: 8px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading .dot:nth-child(1) { animation-delay: -0.32s; }
.loading .dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

#listening-indicator {
    position: absolute;
    bottom: 85px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(239, 68, 68, 0.9);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    pointer-events: none;
}

.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        height: 100vh;
        border-radius: 0;
        border: none;
    }
    
    .app-header {
        padding: 15px 16px;
    }

    .logo-container {
        font-size: 22px;
    }

    .app-logo {
        width: 32px;
        height: 32px;
    }
    
    .chat-container {
        padding: 16px;
        gap: 16px;
    }

    .message {
        max-width: 90%;
    }

    .bubble {
        padding: 12px 16px;
        font-size: 15px;
    }

    .input-area {
        padding: 15px 16px;
        gap: 8px;
    }
    
    .mic-btn, .send-btn {
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
    
    #text-input {
        height: 45px;
        padding: 0 16px;
        font-size: 15px;
    }
}