/* ------------------------------------
    Hero Section
   ------------------------------------ */
.hero-section {
    position: relative;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    overflow: hidden;
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://placehold.co/1920x1080/4f46e5/ffffff?text=Voyage+Planner+Hero');
    background-size: cover;
    background-position: center;
    filter: brightness(0.4) blur(3px);
    transform: scale(1.1);
    animation: zoomIn 15s ease-in-out infinite alternate;
    z-index: -1;
}

@keyframes zoomIn {
    from {
        transform: scale(1.1) rotate(0deg);
    }
    to {
        transform: scale(1.2) rotate(1deg);
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 10;
    animation: fadeIn 1.5s ease-in-out;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero-text {
    font-size: 1.25rem;
    max-width: 48rem;
    margin: 0 auto 2rem;
}

/* ------------------------------------
    Cards & Grid
   ------------------------------------ */
.grid-3-col, .grid-2-col, .grid-4-col {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-3-col {
        grid-template-columns: repeat(3, 1fr);
    }
    .grid-4-col {
        grid-template-columns: repeat(4, 1fr);
    }
}

.section-title {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 2rem;
    color: #1e293b;
    animation: slideInUp 1s ease-out;
}

.card {
    background-color: #ffffff;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    padding: 2.5rem;
    text-align: center;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s;
}

.card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1.5rem;
}

.card-title {
    font-size: 1.5rem;
    color: #4f46e5;
    margin-bottom: 0.5rem;
}

.card-subtitle {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e293b;
}

.card-text {
    margin-top: 1rem;
    color: #4b5563;
}

.card-link {
    display: inline-block;
    margin-top: 1.5rem;
    font-weight: 600;
    color: #4f46e5;
    position: relative;
}

.card-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s ease-in-out;
}

.card-link:hover::after {
    transform: translateX(5px);
}

.subscribe-button {
color: #ffffff;
padding: 0.75rem 2.8rem;
border-radius: 9999px;
font-weight: 600;
text-decoration: none;
transition: background-color 0.3s, transform 0.3s;
box-shadow: 0 4px 10px rgba(79, 70, 229, 0.4);
border-color: #111827;
}