:root {
    --bg-main: #0F172A;
    --bg-card: #1E293B;
    --primary: #2563EB;
    --primary-hover: #1D4ED8;
    --secondary: #334155;
    --text-main: #FFFFFF;
    --text-muted: #94A3B8;
    --accent: #3B82F6;
    --nav-height: 70px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    scroll-behavior: smooth;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
nav {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent);
}

.logo span.material-symbols-rounded {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Buttons */
.btn-primary {
    background-color: var(--primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.3s, transform 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-outline {
    border: 1px solid var(--secondary);
    color: var(--text-main);
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.3s;
    text-decoration: none;
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(to right, #ffffff, #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 35px;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 15px;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.mockup {
    width: 250px;
    height: 500px;
    background: var(--bg-card);
    border-radius: 36px;
    border: 8px solid #334155;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.mockup span {
    font-size: 80px;
    color: var(--secondary);
}

/* Features */
.features {
    padding: 100px 0;
    background-color: rgba(30, 41, 59, 0.3);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
    transition: transform 0.3s, border-color 0.3s;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
}

.feature-card span {
    font-size: 40px;
    color: var(--accent);
    margin-bottom: 20px;
    display: block;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-muted);
}

/* Download Section */
.download-section {
    padding: 100px 0;
}

.download-card {
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    padding: 60px;
    border-radius: 30px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.download-card h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.download-card p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.version-info {
    margin-bottom: 30px;
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 600;
}

.btn-download.large {
    padding: 18px 40px;
    font-size: 1.2rem;
    border-radius: 12px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: 0.3s;
}

.btn-download.large:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4);
}

.small {
    margin-top: 20px;
    font-size: 0.8rem !important;
    opacity: 0.7;
}

/* Footer */
footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--text-muted);
}

@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 40px;
    }

    .hero-content {
        order: 2;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-content h1 {
        font-size: 3rem;
    }

    .hero-image {
        order: 1;
        margin-bottom: 30px;
    }

    .mockup {
        width: 220px;
        height: 440px;
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    :root {
        --nav-height: 60px;
    }

    .nav-links a:not(.btn-primary) {
        display: none;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-btns {
        flex-direction: column;
        width: 100%;
    }

    .hero-btns a {
        width: 100%;
        justify-content: center;
    }

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

    .section-title {
        font-size: 1.8rem;
    }

    .download-card {
        padding: 40px 20px;
    }

    .download-card h2 {
        font-size: 1.8rem;
    }

    .btn-download.large {
        width: 100%;
        padding: 15px 20px;
        font-size: 1rem;
    }
}