:root {
    --primary-green: #00ff88;
    --secondary-green: #00cc6a;
    --dark-green: #008f4a;
    --dark-blue: #1e293b;
    --medium-gray: #64748b;
    --light-gray: #94a3b8;
    --white: #ffffff;
    --off-white: #f8fafc;
    --gradient-green: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    --gradient-text: linear-gradient(135deg, #ff6b9d 0%, #4ecdc4 100%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark-blue);
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.nav-logo span {
    font-weight: 800;
    font-size: 1.5rem;
    color: #000;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    text-decoration: none;
    color: #000;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-green);
}

.nav-link.active {
    color: var(--primary-green);
}

.contact-btn {
    background: transparent;
    color: #000;
    border: 2px solid #000;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background: #000;
    color: var(--white);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #000;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--white);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--primary-green);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.hero-description {
    font-size: 1.1rem;
    color: #000;
    margin-bottom: 3rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn-primary {
    background: var(--dark-blue);
    color: var(--white);
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--primary-green);
    color: var(--dark-blue);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: scale(0.95);
}

.btn-secondary {
    background: transparent;
    color: var(--dark-blue);
    border: 2px solid var(--dark-blue);
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--dark-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: scale(0.95);
}

/* Hero Graphic */
.hero-graphic {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    max-width: 400px;
    max-height: 400px;
}

/* Demo Section */
.demo-section {
    padding: 80px 0;
    background: var(--off-white);
}

.demo-header {
    text-align: center;
    margin-bottom: 4rem;
}

.demo-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark-blue);
    margin-bottom: 1rem;
}

.demo-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.demo-description {
    font-size: 1.1rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.demo-interface {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.demo-tabs {
    display: flex;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 12px 24px;
    font-weight: 600;
    color: var(--medium-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.tab-btn.active {
    color: var(--dark-blue);
    border-bottom-color: var(--primary-green);
}

.tab-btn:not(.active) {
    background: transparent;
}

/* Chat Messages */
.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: 20px;
    background: #f8fafc;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ai-message, .user-message {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    animation: slideIn 0.3s ease-out;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.ai-message .message-avatar {
    background: var(--gradient-green);
    color: white;
}

.user-message .message-avatar {
    background: var(--dark-blue);
    color: white;
}

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.5;
}

.ai-message .message-content {
    background: white;
    color: var(--dark-blue);
    border-bottom-left-radius: 6px;
    box-shadow: var(--shadow-sm);
}

.user-message .message-content {
    background: var(--dark-blue);
    color: white;
    border-bottom-right-radius: 6px;
}

.message-content p {
    margin: 0;
}

.chat-input {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.message-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.message-input:focus {
    border-color: var(--primary-green);
}

.send-btn {
    background: var(--primary-green);
    color: var(--dark-blue);
    border: none;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.send-btn:hover {
    background: var(--secondary-green);
}

.send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.demo-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--medium-gray);
}

.feature-item i {
    color: var(--primary-green);
    font-size: 1rem;
}

.demo-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Chatbot Section */
.chatbot-section {
    padding: 80px 0;
    background: var(--off-white);
}

.chatbot-placeholder {
    background: white;
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 2px dashed var(--light-gray);
}

.placeholder-content i {
    color: var(--primary-green);
    margin-bottom: 20px;
}

.placeholder-content h3 {
    font-size: 1.5rem;
    color: var(--dark-blue);
    margin-bottom: 10px;
}

.placeholder-content p {
    color: var(--medium-gray);
    font-size: 1.1rem;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark-blue);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Why Section */
.why-section {
    padding: 80px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-green);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--dark-blue);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.feature-card p {
    color: var(--medium-gray);
    line-height: 1.6;
}

/* Solutions Section */
.solutions-section {
    padding: 80px 0;
    background: var(--off-white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.solution-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-green);
}

.solution-icon {
    width: 80px;
    height: 80px;
    background: var(--dark-blue);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--white);
}

.solution-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.solution-card p {
    color: var(--medium-gray);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* Voice Agent Buttons */
.voice-agent-btn {
    background: var(--gradient-green);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    width: 100%;
    box-shadow: var(--shadow-sm);
}

.voice-agent-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--secondary-green);
}

.voice-agent-btn:active {
    transform: translateY(0);
}

.voice-agent-btn.calling {
    background: #ff4444;
    animation: pulse 1.5s infinite;
}

/* Technology Section */
.technology-section {
    padding: 80px 0;
    background: var(--white);
}

.tech-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 4rem;
}

.tech-item {
    background: var(--off-white);
    color: var(--dark-blue);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.tech-item:hover {
    border-color: var(--primary-green);
    background: var(--white);
}

.tech-cta {
    text-align: center;
    background: var(--off-white);
    padding: 3rem;
    border-radius: 16px;
}

.tech-cta h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-blue);
    margin-bottom: 1rem;
}

.tech-cta p {
    font-size: 1.1rem;
    color: var(--medium-gray);
    margin-bottom: 2rem;
}

/* Voice Call Modal */
.voice-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.voice-modal.active {
    display: flex;
}

.voice-modal-content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-xl);
}

.voice-modal h3 {
    color: var(--dark-blue);
    margin-bottom: 20px;
}

.voice-status {
    margin: 30px 0;
}

.voice-status p {
    color: var(--medium-gray);
    margin-top: 15px;
}

.voice-controls {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.voice-control-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.3s ease;
}

.end-call-btn {
    background: #ff4444;
    color: white;
}

.mute-btn {
    background: var(--medium-gray);
    color: white;
}

.voice-control-btn:hover {
    transform: scale(1.1);
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #e2e8f0;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--light-gray);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--medium-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .features-grid,
    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .tech-list {
        flex-direction: column;
        align-items: center;
    }

    .demo-buttons {
        flex-direction: column;
        align-items: center;
    }

    .chat-messages {
        height: 300px;
        padding: 15px;
    }
    
    .message-content {
        max-width: 85%;
        font-size: 13px;
    }
    
    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .voice-modal-content {
        padding: 30px 20px;
    }

    .voice-controls {
        gap: 15px;
    }

    .voice-control-btn {
        width: 50px;
        height: 50px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .demo-interface {
        padding: 1.5rem;
    }

    .feature-card,
    .solution-card {
        padding: 2rem 1.5rem;
    }

    .chatbot-placeholder {
        padding: 40px 20px;
    }
}

/* Additional hover effects */
.feature-card:hover .feature-icon,
.solution-card:hover .solution-icon {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

/* Network node animation (if you have neural network graphics) */
.network-node {
    opacity: 0;
    transition: all 0.3s ease;
}

.ai-head {
    animation: float 6s ease-in-out infinite;
}