/* Nature-Tech Editorial Design System Refinements */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --primary: #0d631b;
    --primary-container: #2e7d32;
    --surface: #f8faf9;
    --surface-container-low: #f2f4f3;
    --surface-container-lowest: #ffffff;
    --outline-variant: rgba(191, 202, 186, 0.15);
}

body {
    background-color: var(--surface);
    color: #191c1c;
}

/* Glassmorphism Recipe */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: none !important;
}

/* Alpine Card Interaction */
.alpine-card {
    background-color: var(--surface-container-low);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
}

.alpine-card:hover {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px) !important;
    transform: translateY(-8px);
    box-shadow: inset 0 0 0 1px rgba(163, 246, 156, 0.3), 
                0 20px 40px rgba(0, 0, 0, 0.05);
}

/* Typography Editorial Scales */
.display-lg {
    font-size: clamp(3rem, 8vw, 5rem);
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.04em;
}

/* Ambient Shadows */
.ambient-shadow {
    box-shadow: 0 24px 48px rgba(25, 28, 28, 0.04);
}

/* No-Line Rule: Section Transitions */
section {
    position: relative;
    border: none;
}

/* Ghost Border Fallback */
.ghost-border {
    border: 1px solid var(--outline-variant);
}

/* Custom Gradients */
.btn-primary-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
}

/* Navigation Blur */
nav {
    background: rgba(248, 250, 249, 0.7) !important;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

/* Mobile Navigation Menu */
#nav-menu {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
    #nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(248, 250, 249, 0.95);
        backdrop-filter: blur(32px);
        padding: 2rem;
        gap: 1.5rem;
        border-top: 1px solid var(--outline-variant);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    }
}

/* Responsive Grid Spacing */
.responsive-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .responsive-grid {
        gap: 4rem;
    }
}

/* Animations */
@keyframes fadeInSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-entrance {
    animation: fadeInSlideUp 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }

/* Reveal on Scroll (Basic) */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease-out;
}

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