:root {
    --primary: #0071e3;
    --primary-hover: #0077ed;
    --bg: #ffffff;
    --text: #1d1d1f;
    --text-secondary: #86868b;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
    --accent-gradient: linear-gradient(135deg, #0071e3 0%, #00d4ff 100%);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg);
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

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

.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #ffffff;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 113, 227, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    filter: blur(80px);
    animation: move 20s infinite alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 30%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
}

@keyframes move {
    from {
        transform: translate(0, 0) scale(1);
    }

    to {
        transform: translate(100px, 100px) scale(1.1);
    }
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    color: inherit;
}

.nav-logo img {
    width: 32px;
    height: 32px;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-github {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.05);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    color: var(--text) !important;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.download-stats {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background: rgba(0, 113, 227, 0.05);
    border-radius: 100px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid rgba(0, 113, 227, 0.1);
    width: fit-content;
    margin: 0 auto 32px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.stat-value {
    color: var(--primary);
    font-weight: 700;
}

.stat-dot {
    width: 4px;
    height: 4px;
    background: var(--text-secondary);
    border-radius: 50%;
    opacity: 0.3;
}

@media (max-width: 768px) {
    .cta-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

.hero {
    padding: 120px 0 80px;

    text-align: center;
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto 40px;
    order: 1;
}

h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn {
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 16px rgba(0, 113, 227, 0.2);
}

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

.btn-secondary:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.hero-visual {
    margin-top: 0;
    margin-bottom: 40px;
    perspective: 1000px;
    order: -1;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--glass-shadow);
    overflow: hidden;
}

.preview-card {
    max-width: 700px;
    margin: 0 auto;
    transform: rotateX(5deg);
    transition: transform 0.5s ease;
}

.preview-card:hover {
    transform: rotateX(0deg);
}

.app-preview {
    width: 100%;
    display: block;
}

.section {
    padding: 80px 0;

}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;

}

.section-header h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;

}

.feature-card {
    padding: 40px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 113, 227, 0.2);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.04);
}

.icon-box {
    color: var(--primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(0, 113, 227, 0.05);
    border-radius: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.installation-tabs {
    display: flex;
    gap: 8px;
    margin: 32px 0;
    padding: 4px;
    background: rgba(0, 0, 0, 0.03);
    border-radius: 10px;
    width: fit-content;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.tab-btn {
    padding: 6px 20px;
    border-radius: 7px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease forwards;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-list {
    list-style: none;
    counter-reset: step;
}

.step-list li {
    position: relative;
    padding-left: 48px;
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.step-list li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: -2px;
    width: 32px;
    height: 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--primary);
}

.code-snippet {
    background: #f8f8f8;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    position: relative;
    margin-top: 24px;
}

.code-snippet code {
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.9rem;
    color: #1d1d1f;
    word-break: break-all;
}

.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.installation-container {
    max-width: 800px;
    margin: 0 auto;
}

.video-card {
    border-radius: 24px;
}

.installation-video {
    width: 100%;
    display: block;
}

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

.security-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.security-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 113, 227, 0.2);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.04);
}

.security-icon-box {
    color: var(--primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(0, 113, 227, 0.05);
    border-radius: 14px;
}

.security-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.security-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer {
    padding: 100px 0 40px;
    border-top: 1px solid var(--glass-border);
    background: #fcfcfd;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.footer-logo img {
    width: 28px;
    height: 28px;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 24px;
    color: var(--text);
}

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

.footer-column a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-bottom a {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
}

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

.footer-legal {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-legal .dot {
    width: 4px;
    height: 4px;
    background: var(--glass-border);
    border-radius: 50%;
}

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.2, 1, 0.3, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 992px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 1024px) {
    .section {
        padding: 60px 0;
    }
}

@media (max-width: 768px) {
    .download-stats {
        display: none;
    }

    .btn-secondary {
        display: none;
    }

    .hero {
        padding-top: 100px;
        padding-bottom: 40px;
    }

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

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

    .footer-brand {
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-links {
        text-align: center;
    }

    /* Small Smartphone Optimisations */
    @media (max-width: 480px) {
        .blob {
            width: 300px;
            height: 300px;
            filter: blur(50px);
        }

        .glass-card {
            border-radius: 20px;
        }

        .container {
            padding: 0 20px;
        }

        h1 {
            font-size: 2.25rem;
            margin-bottom: 12px;
        }

        .hero {
            padding-top: 80px;
            padding-bottom: 30px;
        }

        .tagline {
            font-size: 1rem;
            margin-bottom: 24px;
            padding: 0 10px;
        }

        .cta-buttons {
            gap: 12px;
            width: 100%;
        }

        .btn {
            padding: 14px 20px;
            font-size: 0.95rem;
            width: 100%;
            justify-content: center;
        }

        .download-stats {
            display: none;
        }

        .btn-secondary {
            display: none;
        }

        .section {
            padding: 40px 0;
        }

        .section-header {
            margin-bottom: 30px;
        }

        .section-header h2 {
            font-size: 1.85rem;
        }

        .section-header p {
            font-size: 1rem;
        }

        .feature-card {
            padding: 24px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .icon-box {
            width: 56px;
            height: 56px;
            margin-bottom: 16px;
        }

        .installation-tabs {
            margin: 24px 0;
        }

        .code-snippet {
            padding: 16px;
        }

        .code-snippet code {
            font-size: 0.8rem;
        }

        .footer-legal {
            flex-direction: column;
            gap: 12px;
            align-items: center;
        }

        .footer-legal .dot {
            display: none;
        }

        .hero-visual {
            margin-top: 0;
            margin-bottom: 32px;
            padding: 0 10px;
        }

        .app-preview {
            border-radius: 16px;
        }

        .nav-logo span {
            font-size: 1.1rem;
        }

        .nav-logo img {
            width: 28px;
            height: 28px;
        }

        .nav-container {
            padding: 0 20px;
        }

        .footer-logo span {
            font-size: 1.1rem;
        }

        .footer-desc {
            font-size: 0.9rem;
        }
    }

    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        gap: 6px;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 1001;
        padding: 4px;
    }

    .mobile-menu-btn span {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text);
        transition: all 0.3s ease;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        gap: 40px;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.5rem;
        font-weight: 600;
        color: var(--text);
    }

    .nav-github {
        background: var(--primary) !important;
        color: white !important;
        padding: 12px 24px !important;
        border-radius: 12px !important;
    }

    /* Spacing & Typography Optimisation */
    .section {
        padding: 80px 0;
    }

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

    .section-header h2 {
        font-size: 2.25rem;
    }

    .hero {
        padding-top: 140px;
    }

    h1 {
        font-size: 3rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

    .hero-visual {
        margin-top: 0;
        margin-bottom: 40px;
    }

    .feature-card {
        padding: 30px;
    }

    .step-list li {
        font-size: 1rem;
        padding-left: 40px;
    }

    .installation-tabs {
        width: 100%;
    }

    .tab-btn {
        flex: 1;
    }

    .footer {
        padding: 60px 0 30px;
    }
}

.mobile-menu-btn {
    display: none;
}