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

:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --accent: #14b8a6;
    --black: #0f172a;
    --white: #ffffff;
    --gray-light: #f8fafc;
    --gray-medium: #64748b;
    --success: #10b981;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* HEADER & NAVIGATION */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 22px;
    font-weight: 600;
    color: var(--black);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--black);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.nav-links a:hover {
    opacity: 0.6;
}

/* HERO SECTION */
.hero {
    margin-top: 70px;
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.95) 0%, rgba(20, 184, 166, 0.9) 100%),
                url('https://images.unsplash.com/photo-1665999374889-2a3242f105cf?q=80&w=2070&auto=format&fit=crop') center/cover;
    color: var(--white);
    text-align: center;
    padding: 60px 24px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    width: 100%;
}

.hero h1 {
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero .lead {
    font-size: clamp(18px, 3vw, 24px);
    margin-bottom: 40px;
    line-height: 1.5;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 16px 32px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    border: 2px solid transparent;
}

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

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

.btn-white:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(255,255,255,0.4);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    transform: scale(1.02);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(14, 165, 233, 0.3);
}

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

/* SECTIONS */
section {
    padding: 80px 24px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 20px;
    text-align: center;
    color: var(--black);
}

.section-subtitle {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--gray-medium);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 48px;
    line-height: 1.6;
}

.bg-gray {
    background: var(--gray-light);
}

/* GAP SECTION */
.gap-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--white);
}

.gap-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.gap-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

.gap-stat {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    padding: 32px 24px;
    text-align: center;
}

.gap-number {
    font-size: clamp(48px, 8vw, 64px);
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 8px;
    color: var(--accent);
}

.gap-label {
    font-size: clamp(14px, 2vw, 16px);
    opacity: 0.9;
}

.gap-solution {
    margin-top: 40px;
    font-size: clamp(16px, 2.5vw, 20px);
    font-weight: 600;
    padding: 28px 24px;
    background: rgba(14, 165, 233, 0.2);
    border-radius: 8px;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

/* PRODUCT SECTIONS */
.product-section {
    padding: 80px 24px;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.product-content h2 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary);
    margin-bottom: 16px;
}

.product-content h3 {
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 24px;
    color: var(--black);
}

.product-content p {
    font-size: clamp(16px, 2.5vw, 20px);
    line-height: 1.6;
    color: var(--gray-medium);
    margin-bottom: 32px;
}

.product-features {
    list-style: none;
    margin-bottom: 32px;
}

.product-features li {
    padding: 16px 0;
    border-bottom: 1px solid rgba(15, 23, 42, 0.1);
    font-size: clamp(16px, 2vw, 18px);
    color: var(--black);
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.product-features li:last-child {
    border-bottom: none;
}

.checkmark {
    color: var(--success);
    font-weight: 700;
    font-size: 20px;
    flex-shrink: 0;
}

.product-image {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 24px 80px rgba(14, 165, 233, 0.15);
}

/* FINAL CTA */
.final-cta {
    background: var(--primary);
    color: var(--white);
    text-align: center;
    padding: 80px 24px;
}

.final-cta h2 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.final-cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* FOOTER */
footer {
    background: #0f172a;
    color: rgba(255,255,255,0.8);
    padding: 60px 24px 32px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.footer-column h4 {
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin-left: 24px;
}

/* RESPONSIVE DESIGN */

/* Tablet (768px and up) */
@media (min-width: 768px) {
    nav {
        padding: 24px 48px;
    }

    .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: 64px;
    }

    section {
        padding: 100px 48px;
    }

    .product-section {
        padding: 100px 48px;
    }
}

/* Mobile (below 768px) */
@media (max-width: 767px) {
    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 14px;
    }

    .hero {
        min-height: 75vh;
        padding: 40px 20px;
    }

    .gap-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-features li {
        padding: 12px 0;
    }

    .btn {
        width: 100%;
        max-width: 400px;
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 16px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .footer-bottom a {
        margin-left: 0;
    }

    /* Comparison table mobile styles */
    .comparison-table-mobile {
        display: block !important;
    }

    .comparison-row {
        grid-template-columns: 1fr !important;
        gap: 8px !important;
        padding: 16px 20px !important;
    }

    .comparison-row > div:first-child {
        font-size: 16px !important;
        margin-bottom: 12px !important;
        border-bottom: 1px solid rgba(15, 23, 42, 0.1);
        padding-bottom: 8px;
    }

    .comparison-row > div:not(:first-child) {
        text-align: left !important;
        padding-left: 20px;
        position: relative;
    }

    .comparison-row > div:not(:first-child):before {
        content: '•';
        position: absolute;
        left: 8px;
        font-weight: 700;
    }

    .comparison-row > div:nth-child(2):before {
        color: var(--gray-medium);
    }

    .comparison-row > div:nth-child(3):before {
        color: var(--success);
    }
}

/* Extra small mobile (below 480px) */
@media (max-width: 479px) {
    nav {
        padding: 16px 20px;
    }

    .logo {
        font-size: 20px;
    }

    .nav-links {
        gap: 16px;
    }

    .nav-links a {
        font-size: 13px;
    }

    section {
        padding: 60px 20px;
    }

    .product-section {
        padding: 60px 20px;
    }
}

/* Utility classes for responsive grids */
.responsive-grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.responsive-grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

@media (min-width: 640px) {
    .responsive-grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .responsive-grid-3 {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (min-width: 1024px) {
    .responsive-grid-3 {
        grid-template-columns: repeat(3, 1fr);
        gap: 48px;
    }
}