:root {
    --color-primary: #0D4F4F;
    --color-primary-dark: #0A3D3D;
    --color-accent: #14B8A6;
    --color-secondary: #5E7A7A;
    --color-text: #1A2F2F;
    --color-text-light: #5E7A7A;
    --color-background: #ffffff;
    --color-background-alt: #F0F7F7;
    --color-background-alt2: #E0EFEF;
    --color-background-tint: #F7FAFA;
    --color-border: #C5D9D9;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-cta {
    text-align: center;
    margin-top: 3rem;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    position: relative;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: 0.05em;
}

.logo-ai {
    text-decoration: overline;
    text-decoration-thickness: 2px;
}

.nav-cta {
    margin-left: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition);
}

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

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-background);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 0;
    min-width: 180px;
    list-style: none;
    z-index: 100;
}

.nav-dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.5rem 1rem;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background: var(--color-bg-alt);
}

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

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 600;
}

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

.btn-secondary {
    background: var(--color-background);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

/* Hero Section */
.hero {
    padding: 10rem 0 6rem;
    text-align: center;
    background: linear-gradient(180deg, var(--color-background-alt) 0%, var(--color-background) 100%);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image {
    margin-top: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.laptop-mockup {
    position: relative;
    display: inline-block;
}

.laptop-screen {
    background: #1e1e1e;
    border-radius: 12px 12px 0 0;
    padding: 12px 12px 0 12px;
    box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.1);
}

.laptop-screen::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    background: #3d3d3d;
    border-radius: 50%;
    margin: 0 auto 8px auto;
}

.laptop-screen img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px 4px 0 0;
}

.laptop-base {
    background: linear-gradient(to bottom, #d1d5db 0%, #9ca3af 100%);
    height: 14px;
    border-radius: 0 0 4px 4px;
    position: relative;
}

.laptop-base::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: #9ca3af;
    border-radius: 0 0 4px 4px;
}

.laptop-base::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 5%;
    right: 5%;
    height: 6px;
    background: linear-gradient(to bottom, #b0b0b0, #d0d0d0);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--color-background);
}

#platform {
    background: var(--color-background-alt);
}

#solutions {
    background: var(--color-background);
}

.features h2,
.pricing h2,
.contact h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.features h2 {
    margin-bottom: 1rem;
}

.section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem auto;
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.feature-card {
    padding: 2rem;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-align: left;
    transition: box-shadow var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    background: transparent;
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Reasons Section */
.reasons {
    padding: 5rem 0;
    background: var(--color-background-tint);
}

.reasons h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.reason-card {
    padding: 2rem;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.reason-number {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.reason-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.reason-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 5rem 0;
    background: var(--color-background-alt);
}

.pricing h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.pricing-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 3rem;
}

.pricing-card-single {
    max-width: 400px;
    margin: 0 auto;
    background: var(--color-background);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
}

.pricing-header h3 {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.pricing-card-single .price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 2rem;
}

.pricing-card-single .currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.pricing-card-single .amount {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
}

.pricing-card-single .period {
    font-size: 1rem;
    color: var(--color-text-light);
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    position: relative;
    padding-left: 1.5rem;
}

.pricing-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

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

/* About Section */
.about {
    padding: 5rem 0;
    background: var(--color-background-alt2);
}

.about h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.about-intro {
    text-align: center;
    color: var(--color-text-light);
    max-width: 900px;
    margin: 0 auto 3rem;
}

.founders-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.founder-card {
    text-align: center;
}

.founder-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--color-border);
    margin: 0 auto 1rem;
    object-fit: cover;
}

.founder-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.founder-role {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: var(--color-background);
}

.contact > .container > p {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.contact-form .btn {
    width: 100%;
}

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

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition);
}

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

/* Mobile Styles */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        transform: none;
        background: var(--color-background);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
        display: none;
    }

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

    .nav-links li {
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .features h2,
    .reasons h2,
    .contact h2 {
        font-size: 1.5rem;
    }

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

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

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

    .footer .container {
        flex-direction: column;
        text-align: center;
    }
}