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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    z-index: 0;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
    z-index: 0;
}

.container {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem;
    max-width: 700px;
    width: 100%;
}

.back-button {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 10;
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.8rem 1.2rem;
    color: #ffffff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.back-button:hover {
    background: rgba(30, 30, 30, 0.8);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateX(-5px);
}

.back-button svg {
    width: 20px;
    height: 20px;
}

.logo {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: 5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 3s ease-in-out infinite alternate;
    text-transform: uppercase;
}

@keyframes glow {
    from {
        filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.5));
    }

    to {
        filter: drop-shadow(0 0 40px rgba(118, 75, 162, 0.8));
    }
}

.subtitle {
    font-size: 1.5rem;
    color: #e0e0e0;
    margin-bottom: 1rem;
    font-weight: 600;
}

.tagline {
    font-size: 1rem;
    color: #a0a0a0;
    margin-bottom: 3rem;
    font-weight: 300;
    letter-spacing: 0.03em;
}

.phone-mockup {
    width: 200px;
    height: 400px;
    margin: 0 auto 3rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 40px;
    padding: 15px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #0a0a0a;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.phone-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
}

.app-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.app-icon img {
    width: 45px;
    height: 45px;
    stroke: white;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.store-button {
    background: rgba(20, 20, 20, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem 2.5rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    width: 100%;
    max-width: 400px;
}

.store-button:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.store-button.apple {
    border-color: rgba(255, 255, 255, 0.15);
}

.store-button.apple:hover {
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.1);
}

.store-button.google {
    border-color: rgba(52, 168, 83, 0.3);
}

.store-button.google:hover {
    border-color: rgba(52, 168, 83, 0.6);
    box-shadow: 0 15px 40px rgba(52, 168, 83, 0.2);
}

.store-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.store-icon img {
    width: 40px;
    height: 40px;
}

.store-button.apple .store-icon img {
    fill: #ffffff;
}

.store-button.google .store-icon img {
    fill: #34a853;
}

.store-text {
    text-align: left;
    flex-grow: 1;
}

.store-label {
    font-size: 0.75rem;
    color: #909090;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.store-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
}

.features {
    margin-top: 4rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.feature {
    padding: 1.5rem 1rem;
    background: rgba(20, 20, 20, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
}

.feature-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 40px;
    height: 40px;
    filter: invert(48%) sepia(79%) saturate(2476%) hue-rotate(200deg) brightness(100%) contrast(119%);
}

.feature-text {
    font-size: 0.9rem;
    color: #a0a0a0;
}

.footer {
    position: fixed;
    bottom: 2rem;
    left: 0;
    width: 100%;
    text-align: center;
    color: #505050;
    font-size: 0.85rem;
    z-index: 1;
}

@media (max-width: 768px) {
    .back-button {
        top: 1rem;
        left: 1rem;
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    .logo {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .tagline {
        font-size: 0.9rem;
        margin-bottom: 2rem;
    }

    .phone-mockup {
        width: 180px;
        height: 360px;
        margin-bottom: 2rem;
    }

    .app-icon {
        width: 70px;
        height: 70px;
    }

    .app-icon img {
        width: 40px;
        height: 40px;
    }

    .store-button {
        padding: 1.2rem 1.5rem;
    }

    .store-name {
        font-size: 1.1rem;
    }

    .features {
        margin-top: 3rem;
        gap: 1rem;
    }

    .footer {
        font-size: 0.75rem;
        bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .phone-mockup {
        width: 160px;
        height: 320px;
    }

    .store-button {
        gap: 1rem;
        padding: 1rem 1.2rem;
    }

    .store-icon {
        width: 40px;
        height: 40px;
    }

    .store-icon img {
        width: 45px;
        height: 45px;
    }
}