:root {
    --primary-color: #22d3ee; /* Bright Turquoise */
    --secondary-color: #84cc16; /* Lime Green */
    --background-color: #111827; /* Dark Blue/Gray */
    --surface-color: #1f2937; /* Lighter Dark Blue/Gray */
    --text-color: #e5e7eb; /* Light Gray */
    --text-dark-color: #9ca3af; /* Medium Gray */
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* --- Header --- */
header {
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--surface-color);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-color);
}

.logo img {
    height: 40px;
    width: 40px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* --- Hero Section --- */
.hero {
    padding: 6rem 2rem;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    max-width: 1200px;
}

.hero-text {
    max-width: 500px;
}

.hero-text h2 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-dark-color);
    margin-bottom: 2rem;
}

.hero-image {
    perspective: 1000px;
}

.hero-image img {
    max-width: 350px;
    border-radius: 25px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    transform: rotateY(-15deg) rotateX(5deg);
    transition: transform 0.4s ease;
}

.hero-image:hover img {
    transform: rotateY(0) rotateX(0);
}

.app-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.app-store-btn {
    background-color: var(--surface-color);
    border: 1px solid #374151;
    border-radius: 8px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-color);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.app-store-btn:hover {
    background-color: #374151;
    transform: translateY(-3px);
}

.app-store-btn img {
    height: 30px;
}

.app-store-btn div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.app-store-btn span {
    font-size: 0.75rem;
    color: var(--text-dark-color);
}

.app-store-btn strong {
    font-size: 1rem;
}

/* --- Sections --- */
.features-section, .about-section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 700;
}

/* --- Features Grid --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--surface-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid #374151;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.feature-image {
    width: 100%;
    aspect-ratio: 1 / 1.1;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

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

/* --- About Section --- */
.about-section {
    background-color: var(--surface-color);
}
.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-dark-color);
}

/* --- Footer --- */
footer {
    background-color: #111827;
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--surface-color);
}

footer p {
    margin-bottom: 0.5rem;
    color: var(--text-dark-color);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--secondary-color);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    .hero-text h2 {
        font-size: 2.5rem;
    }
    .hero-image img {
        max-width: 300px;
        transform: rotateY(0) rotateX(0);
    }
    .app-buttons {
        justify-content: center;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
}