:root {
    --color-dark-bg: #0A0A0E;
    --color-section-bg: rgba(18, 18, 22, 0.9);
    --color-primary-accent: #8A2BE2;
    --color-secondary-accent: #B068FF;
    --color-text-light: #E8E8E8;
    --color-text-dim: #A0A0A0;
    --font-primary: 'Inter', sans-serif;
}

*{
    padding: 0;
    margin: 0;
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-primary);
    margin: 0;
    padding: 0;
    background-color: var(--color-dark-bg);
    color: var(--color-text-light);
    text-align: center;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(138, 43, 226, 0.1) 0%, transparent 40%),
                radial-gradient(circle at bottom left, rgba(138, 43, 226, 0.1) 0%, transparent 40%),
                linear-gradient(180deg, #0A0A0E 0%, #1A1A1E 100%);
    z-index: -2;
}

.main-header {
    width: 100%;
    background-color: rgba(18, 18, 22, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 20px 40px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.8em;
    color: var(--color-primary-accent);
    letter-spacing: -0.02em;
}

.nav-links {
    color: var(--color-text-dim);
    text-decoration: none;
    margin-left: 30px;
    font-size: 1em;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a {
    color: var(--color-text-dim);
    text-decoration: none;
    margin-left: 30px;
    font-size: 1em;
    font-weight: 500;
    transition: color 0.3s ease;
}

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


main {
    width: 100%;
    max-width: 1200px;
    margin-top: 40px;
    padding: 0 20px;
    box-sizing: border-box;
}


section {
    padding: 30px 0;
    margin-bottom: 40px;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}


.section-headline {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 2.8em;
    color: var(--color-primary-accent);
    margin-bottom: 60px;
    letter-spacing: -0.03em;
    text-shadow: 0 0 15px rgba(138, 43, 226, 0.5);
}

.intro-tag {
    font-size: 1.1em;
    font-weight: 500;
    color: var(--color-secondary-accent);
    margin-bottom: 10px;
    opacity: 0;
    animation: fadeIn 1s ease-out forwards 0.2s;
}

.product-name {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 6em;
    color: var(--color-text-light);
    margin: 0 0 20px 0;
    letter-spacing: -0.05em;
    line-height: 1;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
    opacity: 0;
    animation: fadeInScale 1.5s ease-out forwards 0.4s;
}

.tagline-headline {
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 2.8em;
    color: var(--color-secondary-accent);
    margin-bottom: 30px;
    line-height: 1.2;
    letter-spacing: -0.02em;
    opacity: 0;
    animation: fadeIn 1.5s ease-out forwards 0.8s;
}

.hero-description {
    font-size: 1.2em;
    max-width: 800px;
    margin: 0 auto 50px auto;
    line-height: 1.7;
    color: var(--color-text-dim);
    opacity: 0;
    animation: fadeIn 1.5s ease-out forwards 1.2s;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    opacity: 0;
    animation: fadeIn 1.5s ease-out forwards 1.6s;
}

.button {
    padding: 18px 35px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: nowrap;
}

.primary-button {
    background-color: var(--color-primary-accent);
    color: #FFFFFF;
    border: 1px solid var(--color-primary-accent);
    box-shadow: 0 5px 20px rgba(138, 43, 226, 0.5);
}

.primary-button:hover {
    background-color: var(--color-secondary-accent);
    box-shadow: 0 8px 25px rgba(138, 43, 226, 0.7);
    transform: translateY(-2px);
}

.secondary-button {
    background-color: transparent;
    color: var(--color-secondary-accent);
    border: 1px solid var(--color-secondary-accent);
}

.secondary-button:hover {
    background-color: rgba(138, 43, 226, 0.1);
    color: #FFFFFF;
    transform: translateY(-2px);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.feature-item {
    background-color: rgba(138, 43, 226, 0.08);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid rgba(138, 43, 226, 0.15);
    box-shadow: 0 0 25px rgba(138, 43, 226, 0.08);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    text-align: left;
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 35px rgba(138, 43, 226, 0.2);
}

.feature-item h3 {
    font-family: var(--font-primary);
    color: var(--color-secondary-accent);
    font-size: 1.8em;
    margin-bottom: 15px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.feature-item p {
    font-size: 1.05em;
    line-height: 1.7;
    color: var(--color-text-dim);
}

.philosophy-section {
    padding: 20px 0;
}

.philosophy-content {
    max-width: 800px;
    margin: 0 auto;
}

.philosophy-quote {
    font-family: var(--font-primary);
    font-size: 2.2em;
    font-style: italic;
    font-weight: 500;
    color: var(--color-secondary-accent);
    line-height: 1.4;
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(176, 104, 255, 0.4);
}

.philosophy-author {
    font-size: 1.2em;
    font-weight: 400;
    color: var(--color-text-dim);
    margin-bottom: 40px;
}

.philosophy-explanation {
    font-size: 1.1em;
    line-height: 1.7;
    color: var(--color-text-dim);
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.countdown-item {
    background-color: rgba(138, 43, 226, 0.12);
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(138, 43, 226, 0.4);
    min-width: 140px;
    flex: 1;
    max-width: 220px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px solid rgba(138, 43, 226, 0.3);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.countdown-item span {
    font-family: var(--font-primary);
    font-size: 4.5em;
    font-weight: 700;
    color: var(--color-text-light);
    display: block;
    margin-bottom: 10px;
    text-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
}

.countdown-item .label {
    font-size: 1.2em;
    color: var(--color-secondary-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
}

.event-message {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 4em;
    color: var(--color-primary-accent);
    margin-top: 30px;
    text-shadow: 0 0 25px rgba(138, 43, 226, 1);
    animation: pulse 1.5s infinite alternate;
}

.form-message {
    margin-top: 25px;
    font-size: 1.05em;
    color: #66ff66;
    font-weight: 500;
}

.main-footer {
    width: 100%;
    padding: 40px 20px;
    background-color: rgba(18, 18, 22, 0.8);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-top: 1px solid rgba(138, 43, 226, 0.2);
    margin-top: 80px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    gap: 20px;
}

.main-footer p {
    margin: 0;
    font-size: 0.9em;
    color: var(--color-text-dim);
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links img {
    width: 28px;
    height: 28px;
    filter: invert(40%) sepia(100%) saturate(1000%) hue-rotate(250deg) brightness(80%) contrast(100%);
    transition: filter 0.3s ease;
}

.social-links img:hover {
    filter: invert(40%) sepia(100%) saturate(2000%) hue-rotate(250deg) brightness(120%) contrast(100%);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.02); opacity: 0.95; }
}

.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    cursor: pointer;
    z-index: 150;
}

.burger-menu div {
    width: 100%;
    height: 3px;
    background-color: var(--color-primary-accent);
    border-radius: 5px;
    transition: all 0.3s ease;
}

.burger-menu.open .bar1 {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.burger-menu.open .bar2 {
    opacity: 0;
}

.burger-menu.open .bar3 {
    transform: rotate(45deg) translate(-5px, -6px);
}


@media (max-width: 1024px) {
    .product-name {
        font-size: 5em;
    }
    .tagline-headline {
        font-size: 2.3em;
    }
    .section-headline {
        font-size: 2.2em;
    }
    .countdown-item span {
        font-size: 3.8em;
    }
    .event-message {
        font-size: 3.5em;
    }
}

@media (max-width: 768px) {
    .main-header {
        padding: 15px 20px;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 60px;
        left: 0; 
        right: 0;
        margin: 0 auto;
        background-color: rgba(18, 18, 22, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
        padding: 20px 0;
        border-bottom-left-radius: 12px;
        border-bottom-right-radius: 12px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: opacity 0.4s ease-out, transform 0.4s ease-out, visibility 0.4s;
    }

    .nav-links.active {
        display: flex;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        align-items: center;
        justify-content: center;
    }

    .nav-links a {
        margin: 15px 0;
        padding: 10px 0;
        text-align: center;
        font-size: 1.2em;
        color: var(--color-text-light);
        width: 100%;
    }

    .header-content {
        justify-content: space-between;
        padding: 20px;
    }

    .burger-menu {
        display: flex;
    }
}

@media (max-width: 480px) {
    .product-name {
        font-size: 3.5em;
    }
    .tagline-headline {
        font-size: 1.5em;
    }
    .hero-description {
        font-size: 0.95em;
    }
    .button {
        padding: 15px 25px;
        font-size: 1em;
    }
    .section-headline {
        font-size: 1.5em;
    }
    .feature-item h3 {
        font-size: 1.5em;
    }
    .philosophy-quote {
        font-size: 1.5em;
    }
    .countdown-item span {
        font-size: 2.5em;
    }
    .event-message {
        font-size: 2.2em;
    }
}