body {
    font-family: 'Segoe UI', sans-serif;
    scroll-behavior: smooth;
}
.navbar {
    background-color: #0a1a2f;
}
.navbar-brand, .nav-link {
    color: #fff !important;
}
/* Hero Section with Carousel */
.hero-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
}
.hero-section .carousel-item img {
    height: 100vh;
    object-fit: cover;
    filter: brightness(70%);
}
.hero-section .overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}
.hero-section .container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    color: #fff;
    text-align: center;
}
.btn-cta {
    background-color: #ffcc00;
    color: #003366;
    font-weight: 600;
    border: none;
}
.btn-cta:hover {
    background-color: #ffd633;
    color: #001f4d;
}
.feature-img {
    width: 100%;
    max-width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.section-title {
    text-align: center;
    margin-bottom: 40px;
}
footer {
    background: #0fc1bd;
    color: white;
    padding: 30px 0;
    text-align: center;
}
.card:hover {
    transform: translateY(-5px);
    transition: 0.3s;
}

/* Flow container */
.flow-container { 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    gap: 40px; 
    margin-top: 40px; 
    flex-wrap: wrap;
}

/* Steps */
.flow-step { 
    width: 180px; 
    height: 180px; 
    border-radius: 50%; 
    background: #fff; 
    box-shadow: 0 4px 10px rgba(0,0,0,0.1); 
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
    padding: 20px; 
    text-align: center; 
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.9s ease forwards;
}

.flow-step img { 
    width: 55px; 
    margin-bottom: 12px; 
}

.flow-step:hover {
    transform: translateY(-8px) scale(1.07);
    transition: 0.3s ease;
}

/* Curved arrows */
.curved-arrow svg {
    width: 120px;
    height: 80px;
    opacity: 0.9;
}

.curved-arrow {
    animation: pulseArrow 2s ease-in-out infinite;
}

/* Animations */
@keyframes fadeUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes pulseArrow {
    0% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.07); }
    100% { opacity: 0.6; transform: scale(1); }
}

/* Responsive sizes */
@media (max-width: 992px) {
    .flow-step {
        width: 150px; height: 150px;
    }
    .flow-step img { width: 45px; }
    .curved-arrow svg { width: 90px; height: 60px; }
}

@media (max-width: 576px) {
    .flow-container { gap: 25px; }
    .flow-step {
        width: 120px; height: 120px;
    }
    .flow-step img { width: 35px; }
    .curved-arrow svg { width: 70px; height: 45px; }
}

/* Product Card Styling */
.phone-card {
    background: #fff;
    border-radius: 15px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.phone-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* Title */
.phone-card h5 {
    font-size: 1.1rem;
    margin-top: 10px;
}

/* Mobile Friendly */
@media (max-width: 768px) {
    .phone-card {
        margin-bottom: 15px;
    }

    .phone-card h5 {
        font-size: 1rem;
    }

    .feature-img {
        height: 200px;
    }
}

@media (max-width: 576px) {
    .feature-img {
        height: 180px;
    }

    .btn-primary {
        padding: 10px;
        font-size: 0.9rem;
    }
}