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

:root {
    --primary-color: #7c3aed;
    --secondary-color: #ec4899;
    --dark-bg: #0a0e27;
    --light-bg: #f8fafc;
    --text-primary: #ffffff;
    --text-light: #a0aec0;
    --border-color: #2d3748;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 25px 50px rgba(0, 0, 0, 0.3);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --card-bg: #1a202c;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0f1535 100%);
    min-height: 100vh;
}

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

/* Navigation */
.navbar {
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
    filter: drop-shadow(0 0 8px rgba(124, 58, 237, 0.3));
}

.logo:hover .logo-img {
    transform: scale(1.1);
    filter: drop-shadow(0 0 12px rgba(124, 58, 237, 0.5));
}

.logo h1 {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition);
}

.logo h1 a {
    text-decoration: none;
    color: inherit;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    letter-spacing: 0.5px;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 120px 20px 80px;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 5rem;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.8rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-content p {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease 0.2s both;
    line-height: 1.6;
}

.hero-content .subtitle {
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
    color: var(--text-light);
    animation: fadeInUp 0.8s ease 0.3s both;
}

.cta-button {
    padding: 16px 48px;
    font-size: 1.05rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 15px 40px rgba(124, 58, 237, 0.3);
    animation: fadeInUp 0.8s ease 0.4s both;
    letter-spacing: 0.5px;
}

.cta-button:hover {
    transform: translateY(-6px);
    box-shadow: 0 25px 60px rgba(124, 58, 237, 0.4);
}

.cta-button:active {
    transform: translateY(-2px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease 0.3s both;
}

.hero-symbol {
    font-size: 150px;
    animation: float 4s ease-in-out infinite;
    filter: drop-shadow(0 15px 40px rgba(124, 58, 237, 0.3));
}

.hero-img {
    width: 100%;
    max-width: 450px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 30px 70px rgba(124, 58, 237, 0.25);
    animation: float 4s ease-in-out infinite;
    border: 1px solid rgba(124, 58, 237, 0.2);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-25px);
    }
}

/* Features Section */
.features {
    padding: 100px 20px;
    background: var(--dark-bg);
}

.features h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 800;
}

.features > .container > p {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    padding: 2.5rem;
    border-radius: 16px;
    background: var(--card-bg);
    border: 1px solid rgba(124, 58, 237, 0.2);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1), transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

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

.feature-card:hover {
    transform: translateY(-12px);
    border-color: rgba(124, 58, 237, 0.5);
    box-shadow: 0 20px 50px rgba(124, 58, 237, 0.15);
}

.feature-icon-img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 12px;
    margin: 0 auto 1.5rem;
    display: block;
    transition: var(--transition);
}

.feature-card:hover .feature-icon-img {
    transform: scale(1.1);
}

.feature-symbol {
    font-size: 60px;
    margin: 0 auto 1.5rem;
    display: block;
    text-align: center;
    transition: var(--transition);
    animation: bounce 0.6s ease-in-out;
}

.feature-card:hover .feature-symbol {
    transform: scale(1.15) rotateZ(10deg);
    animation: bounce 0.4s ease-in-out infinite;
}

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.98rem;
    line-height: 1.8;
}

/* Multi-color overlap glow for logos */
.multi-glow {
    position: relative;
    /* layered drop-shadows follow the alpha shape of the PNG */
    filter:
        drop-shadow(0 8px 0 rgba(124, 58, 237, 0.35))
        drop-shadow(8px -6px 0 rgba(236, 72, 153, 0.30))
        drop-shadow(-8px 6px 0 rgba(59, 130, 246, 0.30))
        drop-shadow(-10px -4px 0 rgba(16, 185, 129, 0.28));
    transition: var(--transition);
}

.feature-card:hover .multi-glow {
    filter:
        drop-shadow(0 10px 0 rgba(124, 58, 237, 0.45))
        drop-shadow(10px -8px 0 rgba(236, 72, 153, 0.38))
        drop-shadow(-10px 8px 0 rgba(59, 130, 246, 0.38))
        drop-shadow(-12px -6px 0 rgba(16, 185, 129, 0.35));
}

.hero-img.multi-glow {
    filter:
        drop-shadow(0 16px 0 rgba(124, 58, 237, 0.35))
        drop-shadow(16px -12px 0 rgba(236, 72, 153, 0.30))
        drop-shadow(-16px 12px 0 rgba(59, 130, 246, 0.30))
        drop-shadow(-18px -10px 0 rgba(16, 185, 129, 0.28));
}

/* Categories Section */
.categories {
    padding: 80px 20px;
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.05) 0%, rgba(124, 58, 237, 0.05) 100%);
}

.categories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
    font-weight: 800;
}

.categories-grid {
    display: flex;
    flex-wrap: nowrap;
    gap: 1.5rem;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    padding-bottom: 0.5rem;
}

.category-card {
    background: var(--card-bg);
    padding: 2rem 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(124, 58, 237, 0.2);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    flex: 0 0 150px;
    scroll-snap-align: start;
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: var(--cat-border-hover, rgba(124, 58, 237, 0.5));
    box-shadow: 0 15px 40px var(--cat-shadow, rgba(124, 58, 237, 0.15));
}

.category-emoji {
    font-size: 50px;
    display: block;
    margin-bottom: 1rem;
    transition: var(--transition);
    text-shadow: 0 6px 20px var(--cat-glow, rgba(124, 58, 237, 0.35));
}

.category-card:hover .category-emoji {
    transform: scale(1.2);
    animation: bounce 0.4s ease-in-out;
}

.category-card p {
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.95rem;
}

/* Category themed overlay using CSS variables */
.category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--cat1, rgba(124, 58, 237, 0.12)) 0%, var(--cat2, rgba(236, 72, 153, 0.12)) 100%);
    z-index: 0;
}

.category-card > * { position: relative; z-index: 1; }

.category-card { border-color: var(--cat-border, rgba(124, 58, 237, 0.2)); }

/* Harmonious color sets per category */
.cat-animals {
    --cat1: rgba(16, 185, 129, 0.18);
    --cat2: rgba(52, 211, 153, 0.18);
    --cat-border: rgba(16, 185, 129, 0.35);
    --cat-border-hover: rgba(16, 185, 129, 0.55);
    --cat-shadow: rgba(16, 185, 129, 0.25);
    --cat-glow: rgba(16, 185, 129, 0.45);
}

.cat-office {
    --cat1: rgba(99, 102, 241, 0.18);
    --cat2: rgba(96, 165, 250, 0.18);
    --cat-border: rgba(99, 102, 241, 0.35);
    --cat-border-hover: rgba(99, 102, 241, 0.55);
    --cat-shadow: rgba(99, 102, 241, 0.25);
    --cat-glow: rgba(96, 165, 250, 0.45);
}

.cat-memes {
    --cat1: rgba(236, 72, 153, 0.18);
    --cat2: rgba(139, 92, 246, 0.18);
    --cat-border: rgba(236, 72, 153, 0.35);
    --cat-border-hover: rgba(236, 72, 153, 0.55);
    --cat-shadow: rgba(236, 72, 153, 0.25);
    --cat-glow: rgba(236, 72, 153, 0.45);
}

.cat-ai {
    --cat1: rgba(6, 182, 212, 0.18);
    --cat2: rgba(59, 130, 246, 0.18);
    --cat-border: rgba(6, 182, 212, 0.35);
    --cat-border-hover: rgba(6, 182, 212, 0.55);
    --cat-shadow: rgba(6, 182, 212, 0.25);
    --cat-glow: rgba(6, 182, 212, 0.45);
}

.cat-gaming {
    --cat1: rgba(245, 158, 11, 0.18);
    --cat2: rgba(244, 114, 182, 0.18);
    --cat-border: rgba(245, 158, 11, 0.35);
    --cat-border-hover: rgba(245, 158, 11, 0.55);
    --cat-shadow: rgba(245, 158, 11, 0.25);
    --cat-glow: rgba(245, 158, 11, 0.45);
}

.cat-crazy {
    --cat1: rgba(217, 70, 239, 0.18);
    --cat2: rgba(236, 72, 153, 0.18);
    --cat-border: rgba(217, 70, 239, 0.35);
    --cat-border-hover: rgba(217, 70, 239, 0.55);
    --cat-shadow: rgba(217, 70, 239, 0.25);
    --cat-glow: rgba(217, 70, 239, 0.45);
}

.cat-viral {
    --cat1: rgba(132, 204, 22, 0.18);
    --cat2: rgba(34, 197, 94, 0.18);
    --cat-border: rgba(132, 204, 22, 0.35);
    --cat-border-hover: rgba(132, 204, 22, 0.55);
    --cat-shadow: rgba(132, 204, 22, 0.25);
    --cat-glow: rgba(132, 204, 22, 0.45);
}

.cat-trending {
    --cat1: rgba(139, 92, 246, 0.18);
    --cat2: rgba(124, 58, 237, 0.18);
    --cat-border: rgba(139, 92, 246, 0.35);
    --cat-border-hover: rgba(139, 92, 246, 0.55);
    --cat-shadow: rgba(139, 92, 246, 0.25);
    --cat-glow: rgba(139, 92, 246, 0.45);
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Download Section */
.download {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.download .container {
    position: relative;
    z-index: 1;
}

.download h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.download p {
    font-size: 1.2rem;
    margin-bottom: 3.5rem;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.app-store-btn,
.play-store-btn {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 16px 32px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
}

.app-store-btn:hover,
.play-store-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.store-icon {
    width: 65px;
    height: 65px;
    object-fit: contain;
    filter: brightness(1.1);
    flex-shrink: 0;
}

.app-store-btn div,
.play-store-btn div {
    text-align: left;
}

.app-store-btn small,
.play-store-btn small {
    display: block;
    font-size: 0.75rem;
    opacity: 1;
    color: #ffffff;
}

.app-store-btn span:not(.app-icon),
.play-store-btn span:not(.app-icon) {
    display: block;
    font-size: 1rem;
    color: #ffffff;
}

/* Footer */
.footer {
    background: rgba(10, 14, 39, 0.9);
    color: var(--text-light);
    padding: 4rem 20px 1.5rem;
    border-top: 1px solid var(--border-color);
}

.footer .container {
    margin-bottom: 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.footer-section p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-light);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-section a:hover {
    color: var(--primary-color);
    transform: translateX(4px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: #6b7280;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .nav-links {
        gap: 1.5rem;
        font-size: 0.9rem;
    }

    .features h2 {
        font-size: 2.2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .download h2 {
        font-size: 2rem;
    }

    .download-buttons {
        gap: 1rem;
    }

    .app-store-btn,
    .play-store-btn {
        flex-direction: column;
        width: 100%;
        padding: 14px 20px;
    }

    .download p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 35px;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero {
        padding: 80px 15px 60px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 0.95rem;
    }

    .cta-button {
        width: 100%;
        padding: 14px 30px;
    }

    .features h2 {
        font-size: 1.8rem;
    }

    .features {
        padding: 60px 15px;
    }

    .download {
        padding: 60px 15px;
    }

    .download h2 {
        font-size: 1.6rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }
}