body {
    background: url('/images/starry-bg.jpg') no-repeat center center fixed;
    background-size: cover;
    font-family: 'Arial', sans-serif;
    overflow-x: hidden;
}

.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: -1;
    animation: twinkle 10s infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.cosmic-gradient {
    background: linear-gradient(45deg, #ff6ec4, #7873f5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.function-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 25% 10% 40% 10% / 20% 40% 20% 40%;
    padding: 30px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s, opacity 0.3s, filter 0.3s;
    min-height: 280px;
}

.function-box:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.function-box.shadowed {
    opacity: 0.3;
    filter: blur(2px);
    transition: opacity 0.3s, filter 0.3s;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: url('/images/starry-bg.jpg') no-repeat center center fixed;
    background-size: cover;
    border-radius: 0;
    padding: 30px;
    width: 90%;
    max-width: 700px;
    position: relative;
    animation: fadeIn 0.3s ease-in;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.chatbot-modal {
    max-width: 400px;
    max-height: 500px;
    display: flex;
    flex-direction: column;
}

.chatbot-conversation {
    max-height: 350px;
    overflow-y: auto;
    margin-bottom: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 25% 10% 40% 10% / 20% 40% 20% 40%;
}

.chatbot-conversation p {
    margin: 5px 0;
}

.chatbot-conversation .user-message {
    text-align: right;
    color: #ff6ec4;
}

.chatbot-conversation .bot-message {
    text-align: left;
    color: #7873f5;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #fff;
}

.tab-btn {
    flex: 1;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    cursor: pointer;
    transition: background 0.3s;
}

.tab-btn.active {
    background: rgba(255, 255, 255, 0.3);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.cosmic-btn {
    background: linear-gradient(45deg, #ff6ec4, #7873f5);
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s;
}

.cosmic-btn:hover {
    transform: scale(1.05);
}

.response-card {
    margin-top: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 25% 10% 40% 10% / 20% 40% 20% 40%;
    color: #fff;
}

.chatbot-icon {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1100;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.chatbot-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.hidden {
    display: none;
}

.drop-area {
    border: 2px dashed #fff;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    margin-bottom: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}

.drop-area p {
    color: #fff;
    font-size: 1.2rem;
    margin: 0;
}

.drop-area:hover {
    background: rgba(255, 255, 255, 0.2);
}

.input-bar {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 5px;
}

.input-bar input {
    flex: 1;
    background: transparent;
    border: none;
    color: #fff;
    outline: none;
    padding: 8px;
}

.input-bar .cosmic-btn {
    padding: 8px 16px;
}

.loading-spinner {
    margin-top: 10px;
    color: #fff;
    font-size: 1rem;
    text-align: center;
    display: none;
}

.loading-spinner::before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
    }
    .chatbot-modal {
        max-width: 90%;
        max-height: 80vh;
    }
    .input-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .input-bar .cosmic-btn {
        margin-top: 10px;
        margin-left: 0;
    }
}