/* --- Global Reset & Variables --- */
:root {
    --bg-white: #ffffff;
    --bg-soft: #fbfbfb;
    --dark: #000000;
    --text-main: #1d1d1f;
    --text-sub: #86868b;
    --border: #e5e5e5;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--bg-white);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Hero Section --- */
#hero {
    padding: 100px 0 60px;
    text-align: center;
    background: radial-gradient(circle at top, #f9f9f9 0%, #ffffff 100%);
}

.logo-box img {
    width: 100px;
    border-radius: 22px;
    margin-bottom: 25px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: var(--transition);
}

#hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 10px;
}

#hero p {
    color: var(--text-sub);
    font-size: 1.2rem;
    margin-bottom: 35px;
}

/* --- Buttons --- */
.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--dark);
    color: #fff;
    padding: 18px 45px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    transition: var(--transition);
}

.btn-download:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
}

/* --- Quick Stats (Hero) --- */
.quick-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.q-item h3 { font-size: 2rem; font-weight: 700; }
.q-item small { color: var(--text-sub); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 1px; }

/* --- Features Section --- */
#features { padding: 100px 0; background: var(--bg-soft); }
.section-title { text-align: center; font-size: 2.5rem; font-weight: 800; margin-bottom: 60px; }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.feature-card {
    background: #fff;
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    border-color: var(--dark);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.feature-card i { font-size: 2.5rem; margin-bottom: 20px; color: var(--dark); }
.feature-card h3 { margin-bottom: 15px; font-weight: 700; }
.feature-card p { color: var(--text-sub); font-size: 0.95rem; }

/* --- Steps Section --- */
#how-it-works { padding: 100px 0; }
.steps-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.step-item { flex: 1; min-width: 180px; text-align: center; }
.step-icon {
    width: 80px;
    height: 80px;
    background: var(--dark);
    color: #fff;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    position: relative;
}

.step-number {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #fff;
    color: #000;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-size: 0.9rem;
    font-weight: 800;
    border: 2px solid #000;
}

/* --- Slider Section --- */
#screenshots-sec { padding: 80px 0; background: #fff; overflow: hidden; }
.slider-wrapper { width: 100%; position: relative; }
.slider {
    display: flex;
    gap: 20px;
    animation: infiniteScroll 10s linear infinite;
    width: max-content;
}

.slide img {
    width: 260px;
    height: auto;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

@keyframes infiniteScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* --- Why Choose Section --- */
#why-choose { padding: 100px 0; background: var(--bg-soft); }
.benefits-list { max-width: 650px; margin: 0 auto; }
.benefit-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: #fff;
    margin-bottom: 15px;
    border-radius: 15px;
    border: 1px solid var(--border);
    font-weight: 600;
}
.benefit-item i { color: #00c853; font-size: 1.4rem; }

/* --- Stats Section (Dark) --- */
#app-stats {
    background: var(--dark);
    color: #fff;
    padding: 100px 0;
    margin: 40px 20px;
    border-radius: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-card h2 { font-size: 3.5rem; font-weight: 800; margin-bottom: 5px; }
.stat-card .label { opacity: 0.6; text-transform: uppercase; font-size: 0.8rem; letter-spacing: 2px; }

/* --- CTA Section --- */
#cta { padding: 100px 0; text-align: center; }
#cta h2 { font-size: 2.5rem; margin-bottom: 30px; font-weight: 800; }

/* --- Footer --- */
footer {
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

.social-icons { margin-bottom: 25px; }
.social-icons a {
    color: var(--dark);
    font-size: 1.5rem;
    margin: 0 15px;
    transition: var(--transition);
}
.social-icons a:hover { opacity: 0.6; }

.footer-links { margin-bottom: 20px; }
.footer-links a {
    text-decoration: none;
    color: var(--text-sub);
    margin: 0 10px;
    font-size: 0.9rem;
}

.footer-text { color: var(--text-sub); font-size: 0.85rem; }

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: 1s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* --- Mobile Responsive --- */
@media (max-width: 768px) {
    #hero h1 { font-size: 2.2rem; }
    .quick-stats { gap: 20px; flex-direction: column; }
    .stat-card h2 { font-size: 2.5rem; }
}