:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --accent-color: #10b981;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background-color: rgba(31, 41, 55, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(0);
}

.navbar-brand {
    font-size: 1.2rem;
    font-weight: 600;
    color: white !important;
    line-height: 1.2;
}

.navbar-brand img {
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.8)) drop-shadow(0 0 16px rgba(255, 255, 255, 0.4));
    transition: all 0.3s ease;
}

.navbar-brand img:hover {
    filter: drop-shadow(0 0 12px rgba(255, 255, 255, 1)) drop-shadow(0 0 24px rgba(255, 255, 255, 0.6));
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: white !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Floating Contact Buttons */
.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.floating-upwork {
    position: fixed;
    bottom: 30px;
    right: 100px;
    z-index: 1000;
}

.whatsapp-float, .upwork-float {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 30px;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.whatsapp-float {
    background: #25d366;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-float:hover {
    background: #128c7e;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
}

.upwork-float {
    background: #14a800;
    box-shadow: 0 4px 20px rgba(20, 168, 0, 0.4);
}

.upwork-float:hover {
    background: #0d7a00;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(20, 168, 0, 0.6);
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4), 0 4px 20px rgba(20, 168, 0, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.8), 0 4px 30px rgba(20, 168, 0, 0.8);
    }
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4), 0 4px 20px rgba(20, 168, 0, 0.4);
    }
}

/* Hero Section */
.hero {
    position: relative;
    background: var(--gradient-primary);
    color: white;
    overflow: hidden;
    min-height: 100vh;
}

#three-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero img {
    filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.9)) drop-shadow(0 0 24px rgba(255, 255, 255, 0.5));
    transition: all 0.3s ease;
}

.hero img:hover {
    filter: drop-shadow(0 0 16px rgba(255, 255, 255, 1)) drop-shadow(0 0 32px rgba(255, 255, 255, 0.7));
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideInUp 1s ease-out;
}

.hero .lead {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: slideInUp 1s ease-out 0.2s both;
}

.btn-primary {
    background: var(--gradient-accent);
    border: none;
    padding: 0.75rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.3);
    animation: slideInUp 1s ease-out 0.4s both;
}

.btn-primary:hover {
    background: var(--gradient-secondary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.4);
}

/* Stats Section */
.stat-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stat-card .display-4 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Services Section */
.service-card {
    padding: 2.5rem;
    border-radius: 20px;
    background: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: -1;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-card i {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 3.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin: 1rem 0;
    color: var(--dark-color);
}

/* Portfolio Section */
.portfolio-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    height: 100%;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.portfolio-content {
    padding: 1.5rem;
    background: white;
    color: var(--dark-color);
}

.portfolio-content h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
    font-size: 1.3rem;
}

.portfolio-content p {
    color: #6b7280;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.tech-stack .badge {
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
}

/* Contact Section */
.form-control {
    padding: 1rem 1.5rem;
    border-radius: 15px;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    transform: translateY(-2px);
}

/* Contact Buttons in Footer */
.whatsapp-btn {
    background: #25d366;
    border: none;
    border-radius: 50px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.whatsapp-btn:hover {
    background: #128c7e;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

.upwork-btn {
    background: #14a800;
    border: none;
    border-radius: 50px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(20, 168, 0, 0.3);
}

.upwork-btn:hover {
    background: #0d7a00;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(20, 168, 0, 0.4);
}

/* Enhanced Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.service-card, .portfolio-card {
    animation: fadeIn 0.8s ease-out forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }

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

.stat-card:nth-child(1) { animation-delay: 0s; }
.stat-card:nth-child(2) { animation-delay: 0.5s; }
.stat-card:nth-child(3) { animation-delay: 1s; }
.stat-card:nth-child(4) { animation-delay: 1.5s; }

/* Contact Alert Styling */
.contact-alert {
    border-radius: 15px;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .service-card {
        margin-bottom: 1.5rem;
    }
    
    .floating-whatsapp {
        bottom: 20px;
        right: 20px;
    }
    
    .floating-upwork {
        bottom: 20px;
        right: 80px;
    }
    
    .whatsapp-float, .upwork-float {
        width: 50px;
        height: 50px;
        font-size: 25px;
    }
    
    .navbar-brand {
        font-size: 0.9rem;
    }
    
    .navbar-brand img {
        height: 45px !important;
        margin-right: 10px !important;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 0.8rem;
    }
    
    .navbar-brand img {
        height: 40px !important;
        margin-right: 8px !important;
    }
    
    .whatsapp-btn, .upwork-btn {
        display: block;
        width: 100%;
        margin-bottom: 10px;
    }
    
    .whatsapp-btn {
        margin-right: 0 !important;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Enhanced section backgrounds */
#stats {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

#services {
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
}

#contact {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

/* Testimonials Section */
.testimonial-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    height: 100%;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.avatar-circle {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 2rem;
}

.testimonial-text {
    font-style: italic;
    color: #6b7280;
    line-height: 1.6;
}

.testimonial-author {
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

/* Enhanced section backgrounds */
.bg-light {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%) !important;
}

/* AI Chatbot Styles */
.chatbot-container {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    display: none;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid #e5e7eb;
}

.chatbot-container.active {
    display: flex;
    animation: slideInUp 0.3s ease-out;
}

.chatbot-toggle {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
}

.chatbot-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #10b981;
    color: white;
    font-size: 10px;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.chatbot-header {
    background: var(--gradient-primary);
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.chatbot-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.chatbot-info h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.chatbot-status {
    font-size: 12px;
    opacity: 0.8;
}

.chatbot-close {
    background: none;
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    margin-left: auto;
    padding: 5px;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.chatbot-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8fafc;
}

.chatbot-message {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.bot-message .message-content {
    background: white;
    padding: 12px 16px;
    border-radius: 18px 18px 18px 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-width: 85%;
}

.user-message {
    align-items: flex-end;
}

.user-message .message-content {
    background: var(--gradient-primary);
    color: white;
    padding: 12px 16px;
    border-radius: 18px 18px 4px 18px;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
    max-width: 85%;
}

.message-content p {
    margin: 0;
    line-height: 1.4;
    font-size: 14px;
}

.message-time {
    font-size: 11px;
    color: #9ca3af;
    margin-top: 4px;
    align-self: flex-start;
}

.user-message .message-time {
    align-self: flex-end;
}

.chatbot-input-container {
    padding: 15px 20px;
    background: white;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 10px;
    align-items: center;
}

#chatbot-input {
    flex: 1;
    border: 1px solid #d1d5db;
    border-radius: 25px;
    padding: 10px 15px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease;
}

#chatbot-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.chatbot-send {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.chatbot-send:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.chatbot-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.chatbot-footer {
    padding: 10px 20px;
    background: #f3f4f6;
    text-align: center;
    border-top: 1px solid #e5e7eb;
}

.chatbot-footer small {
    color: #6b7280;
    font-size: 11px;
}

.chatbot-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.chatbot-footer a:hover {
    text-decoration: underline;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: white;
    border-radius: 18px 18px 18px 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-width: 85%;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: #9ca3af;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

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

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Quick Response Buttons */
.quick-responses {
    margin-top: 15px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
}

.quick-response-title {
    font-size: 12px;
    font-weight: 600;
    color: #6b7280;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.quick-response-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quick-response-btn {
    background: white;
    border: 1px solid #d1d5db;
    border-radius: 20px;
    padding: 8px 12px;
    font-size: 12px;
    color: #374151;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    font-family: inherit;
}

.quick-response-btn:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* Responsive chatbot */
@media (max-width: 768px) {
    .chatbot-container {
        width: calc(100vw - 40px);
        height: calc(100vh - 100px);
        left: 20px;
        right: 20px;
        bottom: 20px;
    }
    
    .chatbot-toggle {
        bottom: 20px;
        left: 20px;
    }
    
    .quick-response-buttons {
        gap: 6px;
    }
    
    .quick-response-btn {
        font-size: 11px;
        padding: 6px 10px;
    }
}