:root {
    --theme-color: #1598e4;
    --text-color: #333;
    --background-color: #363636;
    --light-gray: #e9ecef;
    --white: #fff;
    --dark-text: #1a1a1a;
    --section-padding: 60px 0;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

header {
    background-color: var(--white);
    padding: 15px 0;
    border-bottom: 1px solid var(--light-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

#app-logo-img {
    height: 40px;
    width: 40px;
    margin-right: 10px;
    border-radius: 8px; /* Optional: if logo is square and needs rounded corners */
}

header h1 {
    color: var(--theme-color);
    margin: 0;
    font-size: 1.8em;
    font-weight: 700;
}

header nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 400;
    transition: color 0.3s ease;
}

header nav a:hover, header nav a.active {
    color: var(--theme-color);
    font-weight: 600;
}

#hero {
    background: linear-gradient(135deg, #1a1a1acc, #000c), url(./all.jpg);
    background-position: 0 -320px;
    color: var(--white);
    background-size: 100%;
    padding: 100px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.8em;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2em;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.cta-button {
    background-color: var(--white);
    color: var(--theme-color);
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.cta-button:hover {
    background-color: var(--theme-color);
    color: var(--white);
    border-color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.15);
}

#hero .cta-button {
     background-color: var(--white);
     color: var(--theme-color);
}
#hero .cta-button:hover {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}


section {
    padding: var(--section-padding);
}

section h2 {
    text-align: center;
    font-size: 2.2em;
    color: var(--dark-text);
    margin-bottom: 50px;
    position: relative;
}

section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--theme-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

#features {
    background-color: var(--background-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-item {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.07);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.feature-icon-placeholder {
    font-size: 2.5em; /* Placeholder for icons */
    color: var(--theme-color);
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 1.4em;
    color: var(--theme-color);
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 0.95em;
    color: #555;
}

#screenshots-section {
    background-color: var(--white);
}

.screenshots-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    justify-items: center;
}

.screenshot-img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border: 3px solid var(--light-gray);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.screenshot-img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

#download {
    background-color: var(--theme-color);
    color: var(--white);
    text-align: center;
}

#download h2 {
    color: var(--white);
}
#download h2::after {
    background-color: var(--white);
}

#download p {
    font-size: 1.1em;
    margin-bottom: 30px;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.platform-button {
    background-color: var(--white);
    color: var(--theme-color);
    padding: 12px 30px; /* Slightly larger for platform buttons */
}

.platform-button:hover {
    background-color: var(--dark-text);
    color: var(--white);
    border-color: var(--dark-text);
}

.coming-soon {
    font-size: 0.9em;
    opacity: 0.8;
}

footer {
    background-color: var(--dark-text);
    color: var(--light-gray);
    text-align: center;
    padding: 30px 0;
    font-size: 0.9em;
}

footer a {
    color: var(--theme-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}


/* Responsive Adjustments */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    header nav {
        margin-top: 10px;
    }
    header nav a {
        margin: 0 10px;
    }

    .hero-content h2 {
        font-size: 2.2em;
    }
    .hero-content p {
        font-size: 1em;
    }

    section h2 {
        font-size: 1.8em;
    }

    .feature-grid {
        grid-template-columns: 1fr; /* Stack features on smaller screens */
    }
    .screenshots-gallery {
        grid-template-columns: 1fr; /* Stack screenshots */
    }
    .screenshot-img {
        max-width: 80%; /* Allow screenshots to be a bit smaller than full width on mobile */
    }
     .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    .platform-button {
        width: 70%;
        max-width: 250px;
        margin-bottom: 10px;
    }
}