@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
    
body {
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
    background-image: 
    radial-gradient(circle at 25% 25%, rgba(0, 120, 180, 0.3) 0%, transparent 60%),
    radial-gradient(circle at 75% 75%, rgba(30, 144, 255, 0.3) 0%, transparent 60%),
    radial-gradient(circle at 50% 50%, rgba(0, 102, 204, 0.2) 0%, transparent 70%);
    background-attachment: fixed;
}

.glass {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Enhanced Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes glow {
    0% { box-shadow: 0 0 5px rgba(59, 130, 246, 0.5); }
    50% { box-shadow: 0 0 15px rgba(59, 130, 246, 0.8); }
    100% { box-shadow: 0 0 5px rgba(59, 130, 246, 0.5); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0px); }
}

.animate-fadeIn {
    animation: fadeIn 0.5s ease-out forwards;
}

.animate-slideInRight {
    animation: slideInRight 0.5s ease-out forwards;
}

.animate-slideInLeft {
    animation: slideInLeft 0.5s ease-out forwards;
}

.animate-pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

.animate-glow {
    animation: glow 2s ease-in-out infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Button Enhancements */
button {
    position: relative;
    overflow: hidden;
    transform: translateZ(0);
}

button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    z-index: -1;
}

button:hover::before {
    width: 300%;
    height: 300%;
}

/* Hero Section Enhancements */
.bg-gradient-to-b {
    background: linear-gradient(135deg, #004082, #0080c0, #3299cc);
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

/* Chat Interface Enhancements */
#chat-messages > div {
    animation: fadeIn 0.4s ease-out forwards;
    transition: all 0.3s ease;
}

#chat-messages > div:nth-child(odd) {
    animation: slideInLeft 0.4s ease-out forwards;
}

#chat-messages > div:nth-child(even) {
    animation: slideInRight 0.4s ease-out forwards;
}

#message-input {
    background-color: rgba(30, 58, 138, 0.3);
    color: white;
    border: 1px solid rgba(59, 130, 246, 0.5);
    font-size: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Document Viewer Enhancements */
#document-viewer {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-origin: center;
}

.document-viewer-visible {
    animation: fadeIn 0.4s ease-out forwards;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Message Bubbles Styling */
.bg-blue-600, .bg-blue-900\/80 {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.bg-blue-600:hover, .bg-blue-900\/80:hover {
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

#voice-button {
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border: 1px solid rgba(59, 130, 246, 0.5);
}

#voice-button:hover {
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Voice Button Enhancement */
#voice-button.recording {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    animation: pulse 1.5s ease-in-out infinite;
}

/* Question Heading Enhancement */
.question-heading {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #d5e9ff;
    text-shadow: 0 0 10px rgba(213, 233, 255, 0.3);
    letter-spacing: 0.5px;
}

.answer-content {
    margin-top: 0.5rem;
    line-height: 1.6;
}

/* Document Resources Enhancement */
.document-resources {
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(59, 130, 246, 0.3);
    background: rgba(0, 128, 192, 0.1);
    border-radius: 0.5rem;
    padding: 0.75rem;
}

/* Container Transitions */
.chat-container-minimized {
    width: 50%;
    transition: width 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.document-viewer-visible {
    display: block !important;
    width: 40%;
    transition: width 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 128, 192, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.5);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(59, 130, 246, 0.8);
}

/* Start Chat Button Enhancement */
#start-chat-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
}

#start-chat-btn::after {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: rotate(45deg);
    transition: all 0.5s ease;
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        left: -100%;
        top: -100%;
    }
    100% {
        left: 100%;
        top: 100%;
    }
}

#start-chat-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Typing Indicator Enhancement */
#typing-indicator .animate-bounce {
    animation-duration: 1.4s;
}

/* Mobile Responsiveness Enhancement */
@media (max-width: 768px) {
    .chat-container-minimized {
        width: 100%;
    }
    
    .document-viewer-visible {
        position: fixed;
        inset: 0;
        z-index: 50;
        width: 100%;
        padding: 1rem;
        background-color: rgba(0, 0, 0, 0.95);
        animation: fadeIn 0.3s ease-out forwards;
    }
    
    #start-chat-btn {
        width: 100%;
        max-width: 300px;
    }
}

/* Input Field Focus Animation */
#message-input:focus::placeholder {
    transform: translateY(-20px);
    opacity: 0;
    transition: all 0.3s ease;
}

/* Send Button Enhancement */
#send-button {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border: 1px solid rgba(59, 130, 246, 0.5);
}

#send-button:hover {
    background: linear-gradient(135deg, #2563eb, #1e3a8a);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Lucide Icon Animations */
.lucide {
    transition: transform 0.3s ease;
}

button:hover .lucide {
    transform: scale(1.1);
}

/* Document Button Animations */
.document-resources button {
    transition: all 0.3s ease;
}

.document-resources button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Close Document Button Animation */
#close-doc-btn {
    transition: all 0.3s ease;
}

#close-doc-btn:hover {
    transform: rotate(90deg);
}

.text-blue-400 {
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    display: inline-block;
    font-weight: bold;
    text-shadow: 0 2px 10px rgba(59, 130, 246, 0.2);
    position: relative;
    transition: all 0.3s ease;
}

.text-blue-400 {
    background-size: 200% 200%;
}