/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #000000;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-weight: 600;
    font-size: 1.3rem;
    color: #ffffff;
    letter-spacing: -0.5px;
}

.nav-logo {
    width: 40px;
    height: 40px;
    margin-right: 12px;
    filter: brightness(1.2) drop-shadow(0 0 8px rgba(255, 255, 255, 0.2));
}

.nav-menu {
    display: flex;
    gap: 1rem;
}

.nav-link {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.95rem;
}

.nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.nav-hamburger span {
    width: 28px;
    height: 2.5px;
    background: #ffffff;
    margin: 4px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: #000000;
    position: relative;
    padding: 140px 2rem 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.02) 0%, transparent 40%),
        radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 90% 60%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 40% 80%, rgba(255, 255, 255, 0.3), transparent);
    background-size: 200% 200%, 200% 200%, 200px 200px, 150px 150px, 250px 250px, 180px 180px, 220px 220px, 190px 190px;
    background-position: 0% 0%, 100% 100%, 0% 0%, 100% 100%, 50% 50%, 80% 20%, 10% 70%, 90% 40%;
    animation: particleFloat 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes particleFloat {
    0%, 100% {
        background-position: 0% 0%, 100% 100%, 0% 0%, 100% 100%, 50% 50%, 80% 20%, 10% 70%, 90% 40%;
    }
    50% {
        background-position: 100% 100%, 0% 0%, 100% 100%, 0% 0%, 60% 40%, 20% 80%, 90% 30%, 10% 60%;
    }
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 100%;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: #ffffff;
    letter-spacing: -1.5px;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
    transition: text-shadow 0.3s ease;
}

.hero-title:hover {
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.4);
}

.gradient-text {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, #b8b8b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textShine 3s ease-in-out infinite;
}

@keyframes textShine {
    0%, 100% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.2);
    }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    line-height: 1.7;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.75);
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 1.2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn i {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.95);
    color: #000000;
    border: 1px solid #ffffff;
}

.btn-primary:hover {
    background: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(255, 255, 255, 0.2), 0 0 40px rgba(255, 255, 255, 0.1);
}

.btn-primary:hover i {
    transform: scale(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.btn-secondary:hover::before {
    transform: translateX(100%);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover i {
    transform: translateX(3px);
}

/* ===== FEATURES SECTION ===== */
.features {
    padding: 120px 2rem;
    background: #000000;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.015) 0%, transparent 50%);
    pointer-events: none;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
    position: relative;
    z-index: 1;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1.2rem;
    color: #ffffff;
    letter-spacing: -1.5px;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.15);
}

.section-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.7);
    max-width: 700px;
    margin: 0 auto;
    font-weight: 400;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: 2rem;
    max-width: 1300px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.feature-card {
    position: relative;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9),
        rgba(255, 255, 255, 0.3),
        rgba(255, 255, 255, 0.05),
        rgba(255, 255, 255, 0.3),
        rgba(255, 255, 255, 0.9)
    );
    border-radius: 24px;
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: -1;
    background-size: 400% 400%;
    animation: neonBorderFlow 4s ease-in-out infinite;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.97);
    border-radius: 24px;
    z-index: -1;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-12px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 50px rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

@keyframes neonBorderFlow {
    0%, 100% {
        background-position: 0% 50%;
    }
    25% {
        background-position: 100% 50%;
    }
    50% {
        background-position: 100% 100%;
    }
    75% {
        background-position: 0% 100%;
    }
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: #ffffff;
    font-size: 2.2rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.feature-icon::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.8),
        transparent,
        rgba(255, 255, 255, 0.8)
    );
    border-radius: 20px;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    animation: iconPulse 2.5s ease-in-out infinite;
}

.feature-card:hover .feature-icon::before {
    opacity: 1;
}

@keyframes iconPulse {
    0%, 100% {
        opacity: 0.2;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.08);
    }
}

.feature-card:hover .feature-icon {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
}

.feature-icon i {
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.4));
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
    color: #ffffff;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 0.1);
}

.feature-card p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    font-size: 1rem;
    font-weight: 400;
}

/* ===== DOWNLOAD SECTION ===== */
.download {
    padding: 100px 2rem;
    background: #000000;
    position: relative;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.download-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.download-info {
    position: relative;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 28px;
    padding: 4rem 3rem;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.download-info::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0.9),
        rgba(255, 255, 255, 0.3),
        rgba(255, 255, 255, 0.9)
    );
    border-radius: 28px;
    opacity: 0.6;
    z-index: -1;
    background-size: 200% 200%;
    animation: downloadNeon 4s linear infinite;
}

.download-info::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.98);
    border-radius: 28px;
    z-index: -1;
}

@keyframes downloadNeon {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 200% 50%;
    }
}

.version-info {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.current-version, .version-size {
    text-align: center;
}

.version-number, .size-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    display: block;
    letter-spacing: -1px;
}

.version-date, .size-info {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.9rem;
    display: block;
    margin-top: 0.5rem;
}

.download-buttons {
    margin: 3rem 0;
}

.btn-large {
    padding: 18px 42px;
    font-size: 1.15rem;
    border-radius: 14px;
}

.security-info {
    margin-top: 2.5rem;
}

.security-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.9);
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.security-badge::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    opacity: 0;
    animation: badgeShine 3s ease-in-out infinite;
}

@keyframes badgeShine {
    0%, 100% {
        opacity: 0;
        transform: translateX(-100%);
    }
    50% {
        opacity: 1;
        transform: translateX(100%);
    }
}

.security-badge i {
    font-size: 1.1rem;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
}

/* ===== FOOTER ===== */
.footer {
    background: #000000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.8rem 2rem;
    text-align: center;
}

.footer p {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #ffffff;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .nav-hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 1.5rem;
        transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.3rem;
        padding: 1.2rem 2.5rem;
        border-radius: 14px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        min-width: 220px;
        text-align: center;
    }

    .nav-hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-6px, 6px);
    }

    .nav-hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-6px, -6px);
    }

    .hero {
        padding: 100px 1.5rem 60px;
    }

    .hero-title {
        margin-bottom: 1.2rem;
    }

    .hero-subtitle {
        margin-bottom: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        max-width: 320px;
        justify-content: center;
        padding: 15px 28px;
    }

    .features {
        padding: 80px 1.5rem;
    }

    .section-header {
        margin-bottom: 3.5rem;
    }

    .features-grid {
        gap: 1.5rem;
    }

    .feature-card {
        padding: 2.5rem 2rem;
    }

    .feature-icon {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }

    .download {
        padding: 70px 1.5rem;
    }

    .download-info {
        padding: 2.5rem 1.8rem;
        border-radius: 22px;
    }

    .version-info {
        gap: 2.5rem;
        margin: 2.5rem 0;
    }

    .version-number, .size-number {
        font-size: 2rem;
    }

    .download-buttons {
        margin: 2.5rem 0;
    }

    .btn-large {
        padding: 16px 32px;
        font-size: 1.05rem;
    }

    .footer {
        padding: 1.5rem 1.5rem;
    }

    .footer p {
        font-size: 0.85rem;
        line-height: 1.8;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }

    .nav-brand {
        font-size: 1.1rem;
    }

    .nav-logo {
        width: 35px;
        height: 35px;
    }

    .hero {
        padding: 90px 1.2rem 50px;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .features {
        padding: 70px 1.2rem;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .feature-card {
        padding: 2.2rem 1.8rem;
    }

    .feature-icon {
        width: 65px;
        height: 65px;
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .feature-card h3 {
        font-size: 1.3rem;
    }

    .feature-card p {
        font-size: 0.95rem;
    }

    .download {
        padding: 60px 1.2rem;
    }

    .download-info {
        padding: 2rem 1.5rem;
    }

    .version-info {
        gap: 2rem;
    }

    .version-number, .size-number {
        font-size: 1.8rem;
    }
}

/* ===== SMOOTH ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar,
    .footer {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}