@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --color-primary: #0f766e;
    --color-primary-hover: #115e59;
    --color-text-dark: #1f2937;
    --color-text-muted: #6b7280;
    --color-border: #e5e7eb;
    --color-bg: #fafafa;
    --color-bg-white: #ffffff;
    --color-button-border-red: #ef4444;
    --color-button-border-green: #22c55e;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Consolas', 'Fira Code', 'Courier New', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-dark);
    background-color: var(--color-bg);
    background-image: radial-gradient(circle, #d1d5db 1px, transparent 1px);
    background-size: 20px 20px;
    line-height: 1.6;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 100;
    background: transparent;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar__logo {
    width: 24px;
    height: 24px;
}

.navbar__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    text-decoration: none;
    font-family: var(--font-mono);
}

.navbar__title-clip {
    font-style: normal;
}

.navbar__title-next {
    font-style: italic;
}

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

.btn-primary {
    background-color: var(--color-bg-white);
    color: var(--color-text-dark);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    font-family: var(--font-mono);
    position: relative;
    isolation: isolate;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    font-family: var(--font-mono);
    position: relative;
    isolation: isolate;
}

.btn-secondary:hover {
    color: var(--color-text-dark);
}

.btn-primary::before,
.btn-secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 1px;
    border-radius: inherit;
    background: linear-gradient(120deg, var(--color-button-border-red), var(--color-button-border-green), var(--color-button-border-red));
    background-size: 220% 100%;
    animation: button-border-slide 2.8s linear infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    pointer-events: none;
}

@keyframes button-border-slide {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 220% 50%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .btn-primary::before,
    .btn-secondary::before {
        animation: none;
    }
}

.nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-text-dark);
}

main {
    margin-top: 80px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 2rem;
}

.hero {
    padding: 4rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero__content {
    max-width: 540px;
}

.hero__headline {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
}

.hero__subheadline {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero__cta-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.hero__trust-line {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    text-align: left;
}

.technical-note {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 1rem;
    font-size: 0.875rem;
    line-height: 1.6;
}

.technical-note__label {
    font-family: var(--font-mono);
    color: var(--color-primary);
    font-weight: 600;
    margin-right: 0.5rem;
}

.technical-note__text {
    color: var(--color-text-muted);
}

.technical-note__text code {
    background-color: var(--color-bg);
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

.hero__visual {
    position: relative;
}

.hero__image {
    width: 100%;
    max-width: 540px;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.features {
    padding: 4rem 0;
}

.feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.feature--reverse {
    direction: rtl;
}

.feature--reverse > * {
    direction: ltr;
}

.feature__content {
    max-width: 480px;
}

.feature__title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-text-dark);
}

.feature__description {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.feature__image {
    width: 100%;
    max-width: 540px;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.personal-note {
    padding: 3rem 0;
    text-align: center;
}

.personal-note p {
    font-size: 1rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.footer {
    border-top: 1px solid var(--color-border);
    padding: 2rem;
    margin-top: 4rem;
    background-color: var(--color-bg-white);
}

.footer__content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer__copyright {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer__links {
    display: flex;
    gap: 1.5rem;
}

.footer__link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer__link:hover {
    color: var(--color-text-dark);
}

.footer__compatibility {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.show {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    body {
        background-size: 15px 15px;
    }

    .navbar {
        padding: 0.75rem 1rem;
        flex-wrap: wrap;
    }

    .navbar__title {
        font-size: 0.875rem;
        white-space: nowrap;
    }

    .navbar__actions {
        gap: 0.5rem;
    }

    .btn-primary,
    .btn-secondary,
    .nav-link {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
        white-space: nowrap;
    }

    main {
        padding: 0 1rem;
        margin-top: 70px;
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 0;
    }

    .hero__content {
        max-width: 100%;
    }

    .hero__headline {
        font-size: 1.75rem;
        line-height: 1.3;
    }

    .hero__subheadline {
        font-size: 0.9375rem;
    }

    .hero__cta-group {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero__cta-group .btn-primary,
    .hero__cta-group .btn-secondary {
        width: 100%;
        text-align: center;
        font-size: 0.8rem;
        padding: 0.5rem;
    }

    .hero__trust-line {
        font-size: 0.85rem;
        text-align: center;
    }

    .technical-note {
        padding: 0.75rem;
        font-size: 0.8125rem;
    }

    .technical-note__text code {
        font-size: 0.75rem;
    }

    .hero__image {
        max-width: 100%;
    }

    .features {
        padding: 2rem 0;
    }

    .feature {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-bottom: 2.5rem;
    }

    .feature--reverse {
        direction: ltr;
    }

    .feature__content {
        max-width: 100%;
    }

    .feature__title {
        font-size: 1.25rem;
    }

    .feature__description {
        font-size: 0.9375rem;
    }

    .feature__image {
        max-width: 100%;
    }

    .personal-note {
        padding: 2rem 0;
    }

    .personal-note p {
        font-size: 0.9375rem;
        padding: 0 1rem;
    }

    .footer {
        padding: 1.5rem 1rem;
    }

    .footer__content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
        width: 100%;
    }

    .footer__copyright,
    .footer__compatibility,
    .footer__link {
        font-size: 0.8125rem;
    }

    .footer__links {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
    }
}

.privacy-container {
    max-width: 860px;
    margin: 120px auto 60px;
    padding: 0 2rem;
}

.privacy-header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 2rem;
}

.privacy-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.privacy-header .last-updated {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
}

.privacy-intro p {
    font-size: 1.125rem;
    color: var(--color-text-dark);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.highlight-quote {
    border-left: 3px solid var(--color-primary);
    padding: 0.75rem 0 0.75rem 1rem;
    margin: 2rem 0;
    font-size: 1rem;
    color: var(--color-text-dark);
    font-weight: 600;
}

.privacy-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin: 3rem 0 1.25rem;
}

.privacy-content p {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.privacy-content ul {
    margin-left: 1.5rem;
    margin-bottom: 2rem;
    color: var(--color-text-muted);
}

.privacy-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.privacy-content li strong {
    color: var(--color-text-dark);
}

.privacy-content hr {
    border: none;
    border-top: 1px dashed var(--color-border);
    margin: 3rem 0;
}

.privacy-content a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.privacy-content a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .privacy-container {
        margin-top: 90px;
        padding: 0 1rem;
    }

    .privacy-header h1 {
        font-size: 1.75rem;
    }

    .privacy-content h2 {
        font-size: 1.25rem;
        margin: 2rem 0 1rem;
    }
}