/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #1B4B7C;
    --light-blue: #E8F0F8;
    --medium-blue: #5C9FD1;
    --text-dark: #1a1a1a;
    --text-gray: #4a5568;
    --white: #ffffff;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    background: var(--white);
    padding: 20px 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-blue);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

.nav-links a:not(.btn):hover {
    color: var(--primary-blue);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white) !important;
}

.btn-primary:hover {
    background-color: #153a5f;
    transform: translateY(-1px);
    color: var(--white) !important;
}

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

.btn-secondary:hover {
    background-color: var(--light-blue);
}

.btn-large {
    padding: 16px 36px;
    font-size: 16px;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 100px 0 120px;
    overflow: hidden;
    min-height: 520px;
    display: flex;
    align-items: center;
}

.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(27, 75, 124, 0.88) 0%, rgba(27, 75, 124, 0.72) 50%, rgba(92, 159, 209, 0.65) 100%);
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 720px;
}

.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    color: var(--white);
    margin-bottom: 24px;
    font-weight: 700;
}

.hero-description {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-buttons .btn-primary {
    background-color: var(--white);
    color: var(--primary-blue) !important;
    border-color: var(--white);
}

.hero-buttons .btn-primary:hover {
    background-color: var(--light-blue);
    transform: translateY(-1px);
    color: var(--primary-blue) !important;
}

.hero-buttons .btn-secondary {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.6);
    background-color: transparent;
}

.hero-buttons .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: var(--white);
    color: var(--white);
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    font-size: 36px;
    color: var(--primary-blue);
    margin-bottom: 60px;
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 36px 28px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    box-shadow: 0 8px 24px rgba(27, 75, 124, 0.1);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-blue);
    border-radius: 12px;
}

.feature-card h3 {
    font-size: 20px;
    color: var(--primary-blue);
    margin-bottom: 12px;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.6;
}

/* Trusted Partners Section */
.trusted-partners {
    background-color: #f8fafc;
    padding: 80px 0;
    border-top: 1px solid var(--border-color);
}

.partners-title {
    text-align: center;
    font-size: 36px;
    color: var(--primary-blue);
    font-weight: 700;
    margin-bottom: 50px;
    text-transform: none;
    letter-spacing: normal;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 50px 40px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.partner-logo {
    display: flex;
    justify-content: center;
    align-items: center;
}

.partner-logo-box {
    background: var(--light-blue);
    border-radius: 12px;
    padding: 24px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 220px;
}

.partner-logo-box:hover {
    box-shadow: 0 4px 12px rgba(27, 75, 124, 0.08);
    transform: translateY(-2px);
}

.partner-logo svg {
    width: 180px;
    height: auto;
}

/* Early Access Section */
.early-access {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #2a5f8f 100%);
    padding: 80px 0;
    color: var(--white);
}

.early-access-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.early-access h2 {
    font-size: 36px;
    margin-bottom: 16px;
    font-weight: 700;
}

.section-subtitle {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
    text-align: left;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 16px;
}

.benefit-item svg {
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    padding: 4px;
}

.benefit-item svg path {
    stroke: var(--white);
}

/* Conference Section */
.conference {
    background-color: var(--light-blue);
    padding: 80px 0;
}

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

.conference h2 {
    font-size: 36px;
    color: var(--primary-blue);
    margin-bottom: 12px;
    font-weight: 700;
}

.conference-subtitle {
    font-size: 20px;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 24px;
}

.conference-description {
    font-size: 17px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 40px;
}

.conference-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 32px;
    margin-bottom: 40px;
    text-align: left;
}

.conference-highlight {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.conference-highlight strong {
    display: block;
    color: var(--primary-blue);
    font-size: 18px;
    margin-bottom: 8px;
    font-weight: 600;
}

.conference-highlight p {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.5;
    margin: 0;
}

.conference-cta {
    font-size: 17px;
    color: var(--text-gray);
    line-height: 1.7;
    font-style: italic;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--white);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact h2 {
    font-size: 36px;
    color: var(--primary-blue);
    margin-bottom: 16px;
    font-weight: 700;
}

.contact p {
    font-size: 17px;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.contact-email {
    font-size: 24px;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid var(--primary-blue);
    padding-bottom: 4px;
    display: inline-block;
    transition: all 0.3s;
}

.contact-email:hover {
    color: var(--medium-blue);
    border-bottom-color: var(--medium-blue);
}

/* Footer */
.footer {
    background-color: #f8fafc;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

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

.footer-left p {
    color: var(--text-gray);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-gray);
    font-size: 14px;
    transition: color 0.2s;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-text h1 {
        font-size: 36px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }

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

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px 25px;
    }

    .partner-logo-box {
        padding: 20px 16px;
        max-width: 200px;
    }

    .partner-logo svg {
        width: 160px;
    }

    .section-title {
        font-size: 28px;
    }

    .partners-title {
        font-size: 28px;
    }

    .early-access h2,
    .contact h2 {
        font-size: 28px;
    }

    .conference h2 {
        font-size: 26px;
    }

    .conference-subtitle {
        font-size: 16px;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 60px 0 80px;
        min-height: 400px;
    }

    .hero-text h1 {
        font-size: 28px;
    }

    .features {
        padding: 60px 0;
    }

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

    .partner-logo-box {
        padding: 22px 18px;
        max-width: 240px;
    }

    .partner-logo svg {
        width: 170px;
    }

    .early-access {
        padding: 60px 0;
    }

    .contact {
        padding: 60px 0;
    }

    .contact-email {
        font-size: 20px;
    }
}

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

/* Focus States for Accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}