/* styles.css */
:root {
    --primary: #0066cc;
    --primary-dark: #0052a3;
    --primary-light: #3385d6;
    --secondary: #00a896;
    --accent: #ff6b35;
    --dark: #1a365d;
    --darker: #0f1a2e;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark) 0%, var(--darker) 100%);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Reset & Base Styles */
* {
    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);
    background-color: var(--light);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--dark), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    color: var(--dark);
}

h3 {
    font-size: 1.5rem;
}

.highlight {
    color: var(--primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn.primary {
    background: var(--gradient);
    color: white;
    box-shadow: var(--shadow);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn.secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn.secondary:hover {
    background: var(--primary);
    color: white;
}

.btn.large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--dark);
}

.logo span {
    color: var(--primary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

nav a:hover {
    color: var(--primary);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

.nav-cta {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Hero Section */
.hero {
    padding: 12rem 0 6rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000" opacity="0.05"><polygon fill="%230066cc" points="0,1000 1000,0 1000,1000"/></svg>');
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.trust-badges span {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-light);
}

.hero h1 {
    margin-bottom: 1.5rem;
    font-size: 3.5rem;
}

.hero .subtitle {
    font-size: 1.3rem;
    color: var(--gray);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 3rem 0;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 500;
}

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

/* Examples Section */
.examples-section {
    padding: 6rem 0;
    background: white;
}

.industry-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--gray-light);
    background: white;
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.example-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.example-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.example-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.industry-tag {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 500;
}

.industry-tag.oilgas { background: #fef3c7; color: #92400e; }
.industry-tag.water { background: #dbeafe; color: #1e40af; }
.industry-tag.power { background: #fce7f3; color: #be185d; }
.industry-tag.manufacturing { background: #dcfce7; color: #166534; }

.chat-demo.compact {
    background: var(--light);
    border-radius: 0.75rem;
    padding: 1rem;
}

.chat-message {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    max-width: 90%;
    font-size: 0.9rem;
}

.chat-message.sent {
    background: var(--gradient);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 0.25rem;
}

.chat-message.received {
    background: white;
    border: 1px solid var(--gray-light);
    border-bottom-left-radius: 0.25rem;
}

.chat-message.warning {
    background: #fef2f2;
    border-color: #fecaca;
    color: #dc2626;
}

/* Metrics Section */
.metrics-section {
    padding: 6rem 0;
    background: var(--darker);
    color: white;
}

.metrics-section h2 {
    color: white;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.metric-card {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.metric-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.metric-card h3 {
    color: white;
    margin-bottom: 1rem;
}

.metric-card p {
    color: rgba(255, 255, 255, 0.8);
}

/* Features Section */
.features-section {
    padding: 6rem 0;
    background: var(--light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-light);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-benefits {
    list-style: none;
    margin-top: 1rem;
}

.feature-benefits li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.feature-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

/* Awards Section */
.awards-section {
    padding: 6rem 0;
    background: white;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.award-card {
    text-align: center;
    padding: 2rem;
    background: var(--light);
    border-radius: 1rem;
    border: 1px solid var(--gray-light);
}

.award-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Case Studies */
.case-studies-section {
    padding: 6rem 0;
    background: var(--light);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-study-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-light);
}

.case-study-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.industry-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 500;
}

.industry-badge.oilgas { background: #fef3c7; color: #92400e; }
.industry-badge.water { background: #dbeafe; color: #1e40af; }
.industry-badge.power { background: #fce7f3; color: #be185d; }

.result-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--success);
    color: white;
}

.case-study-desc {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.case-study-metrics {
    display: flex;
    gap: 1rem;
}

.case-study-metrics .metric {
    text-align: center;
    flex: 1;
}

.case-study-metrics .value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.case-study-metrics .label {
    font-size: 0.8rem;
    color: var(--gray);
}

/* Industries Section */
.industries-section {
    padding: 6rem 0;
    background: white;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.industry-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-light);
    text-align: center;
    transition: transform 0.3s ease;
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.industry-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.industry-features {
    list-style: none;
    margin-top: 1rem;
}

.industry-features li {
    padding: 0.25rem 0;
    color: var(--gray);
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: var(--gradient-dark);
    color: white;
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
footer {
    background: var(--darker);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.footer-logo span {
    color: var(--primary-light);
}

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: var(--primary);
}

.newsletter {
    display: flex;
    margin-top: 1rem;
}

.newsletter input {
    flex: 1;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem 0 0 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.newsletter input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter button {
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 0 0.5rem 0.5rem 0;
    cursor: pointer;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
}

/* Chat Bot */
.chat-toggle-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.chat-toggle-btn:hover {
    transform: scale(1.1);
}

.chat-icon-image {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
}

.floating-chatbot {
    position: fixed;
    bottom: 5rem;
    right: 2rem;
    width: 380px;
    max-width: 90vw;
    height: 500px;
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    display: none;
    flex-direction: column;
    border: 1px solid var(--gray-light);
}

.floating-chatbot.show {
    display: flex;
}

.chat-interface {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat-header {
    padding: 1rem 1.5rem;
    background: var(--gradient);
    color: white;
    border-radius: 1rem 1rem 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    margin: 0;
    color: white;
}

.chat-status {
    font-size: 0.8rem;
    opacity: 0.9;
}

.chat-container {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chat-input-area {
    padding: 1rem;
    border-top: 1px solid var(--gray-light);
    display: flex;
    gap: 0.5rem;
}

.chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-light);
    border-radius: 0.5rem;
    font-size: 0.9rem;
}

.chat-send-btn {
    padding: 0.75rem 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.chat-send-btn:hover {
    background: var(--primary-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero {
        padding: 8rem 0 4rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    nav ul {
        display: none;
    }
    
    .nav-cta {
        display: none;
    }
    
    .examples-grid,
    .features-grid,
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-chatbot {
        right: 1rem;
        left: 1rem;
        width: auto;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero .subtitle {
        font-size: 1.1rem;
    }
    
    .trust-badges {
        flex-direction: column;
        align-items: center;
    }
}