/* CSS variables for Pure White Tech Style */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #ffffff;
    --bg-alt: #f8fafc;
    --text-color: #0f172a;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s ease;
    --font-main: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    border: none;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-large {
    padding: 14px 32px;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    padding: 15px 0;
    transition: var(--transition);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.nav-menu ul {
    display: flex;
    gap: 25px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: radial-gradient(circle at top right, #f0f9ff 0%, transparent 60%),
                radial-gradient(circle at bottom left, #e0f2fe 0%, transparent 60%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(to right, #0f172a, #334155);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.hero-image {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glow-sphere {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    position: absolute;
    animation: pulse 4s infinite alternate;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.1); opacity: 0.5; }
}

.dashboard-mockup {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--hover-shadow);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.dashboard-mockup i {
    font-size: 4rem;
    color: var(--primary-color);
}

.dashboard-mockup span {
    font-size: 1.2rem;
    font-weight: 600;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

/* Common Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Features */
.features {
    background: var(--bg-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 40px 30px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
    border-color: #bfdbfe;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    background: #eff6ff;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
}

/* Pricing */
.pricing {
    background: var(--bg-alt);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    align-items: center;
}

.pricing-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: var(--card-shadow);
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--hover-shadow);
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--hover-shadow);
    background: linear-gradient(to bottom, #ffffff, #f8fafc);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-5px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 30px;
}

.price span {
    font-size: 1.2rem;
    font-weight: 500;
}

.features-list {
    text-align: left;
    margin-bottom: 30px;
}

.features-list li {
    margin-bottom: 15px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.features-list i {
    color: var(--primary-color);
}

/* Knowledge Base */
.knowledge-base {
    background: var(--bg-color);
}

.kb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.kb-card {
    display: block;
    padding: 25px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: #fff;
    transition: var(--transition);
}

.kb-card:hover {
    box-shadow: var(--hover-shadow);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.kb-card h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-color);
    transition: color 0.2s;
}

.kb-card:hover h4 {
    color: var(--primary-color);
}

.kb-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* Reviews */
.reviews {
    background: var(--bg-alt);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--bg-color);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.review-rating {
    color: #fbbf24;
    margin-bottom: 15px;
}

.review-text {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 20px;
}

.review-author {
    font-weight: 600;
}

/* FAQ */
.faq {
    background: var(--bg-color);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    cursor: pointer;
    background: var(--bg-alt);
    transition: var(--transition);
}

.faq-question:hover {
    background: #e2e8f0;
}

.faq-question i {
    transition: transform 0.3s;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease-out;
}

.faq-item.active .faq-answer {
    padding: 20px;
    max-height: 500px;
    border-top: 1px solid var(--border-color);
}

/* CTA */
.cta {
    background: linear-gradient(135deg, var(--primary-color), #4f46e5);
    color: white;
    text-align: center;
    padding: 80px 0;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 60px 0 30px;
}

.seo-keywords {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #1e293b;
}

.seo-keywords p {
    color: #cbd5e1;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.keyword-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.keyword-cloud a {
    font-size: 0.8rem;
    color: #64748b;
    background: #1e293b;
    padding: 5px 10px;
    border-radius: 4px;
    transition: var(--transition);
}

.keyword-cloud a:hover {
    color: white;
    background: var(--primary-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 20px;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-actions {
        justify-content: center;
    }

    .nav-menu {
        display: none; /* Add mobile menu logic if needed */
    }
    
    .pricing-card.popular {
        transform: scale(1);
    }
    
    .pricing-card.popular:hover {
        transform: translateY(-5px);
    }
}