/* Milestones Section */
.milestones {
    padding: var(--spacing-5xl) 0;
    background-color: var(--color-bg-secondary);
    text-align: center;
}

.milestones .container {
    max-width: 800px;
}

/* Milestones Grid */
.milestones__grid {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: var(--spacing-4xl);
    margin: var(--spacing-4xl) 0;
    flex-wrap: wrap;
}

.milestone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
    border: 2px solid var(--color-border);
    border-radius: 16px;
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, rgba(255, 255, 255, 0.05) 100%);
    transition: all var(--duration-base) var(--ease-out);
    position: relative;
    overflow: hidden;
    min-width: 250px;
    min-height: 180px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.milestone:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--color-text-primary);
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, rgba(255, 255, 255, 0.1) 100%);
}

.milestone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--color-text-primary);
    transform: scaleX(0);
    transition: transform var(--duration-base) var(--ease-out);
}

.milestone:hover::before {
    transform: scaleX(1);
}

/* Milestone Numbers */
.milestone__number {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-bold);
    line-height: 1;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.025em;
    transition: color var(--duration-base) var(--ease-out);
}

.milestone__label {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0;
}

/* Tagline */
.milestones__tagline {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin: var(--spacing-4xl) auto 0;
    max-width: 500px;
    line-height: var(--line-height-relaxed);
}

/* Counter Animation */
.milestone__number[data-target] {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.milestone__number.counting {
    opacity: 1;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Number formatting for large numbers */
.milestone__number::after {
    content: attr(data-suffix);
    font-size: 0.6em;
    vertical-align: top;
    margin-left: 0.1em;
}

/* Responsive Design */
@media (max-width: 768px) {
    .milestones {
        padding: var(--spacing-4xl) 0;
    }
    
    .milestones__grid {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-3xl);
        margin: var(--spacing-3xl) 0;
    }
    
    .milestone {
        padding: var(--spacing-2xl);
        min-width: 280px;
        width: 90%;
        max-width: 350px;
        min-height: 160px;
    }
    
    .milestone__number {
        font-size: var(--font-size-5xl);
    }
    
    .milestones__tagline {
        font-size: var(--font-size-lg);
        margin-top: var(--spacing-3xl);
    }
}

@media (max-width: 480px) {
    .milestone {
        padding: var(--spacing-lg);
    }
    
    .milestone__number {
        font-size: var(--font-size-4xl);
    }
    
    .milestone__label {
        font-size: var(--font-size-xs);
    }
    
    .milestones__tagline {
        font-size: var(--font-size-base);
    }
}

/* Tablet landscape */
@media (min-width: 769px) and (max-width: 1024px) {
    .milestones__grid {
        gap: var(--spacing-2xl);
    }
    
    .milestone {
        padding: var(--spacing-xl);
    }
    
    .milestone__number {
        font-size: var(--font-size-5xl);
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .milestone {
        border-width: var(--border-width-thick);
    }
    
    .milestone:hover {
        background-color: var(--color-text-primary);
        color: var(--color-bg-primary);
    }
    
    .milestone:hover .milestone__number,
    .milestone:hover .milestone__label {
        color: var(--color-bg-primary);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .milestone {
        transition: none;
    }
    
    .milestone:hover {
        transform: none;
    }
    
    .milestone::before {
        transition: none;
    }
    
    .milestone__number {
        animation: none;
        opacity: 1;
    }
    
    @keyframes fadeInUp {
        from, to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* Print styles */
@media print {
    .milestones {
        padding: var(--spacing-lg) 0;
        background-color: transparent;
    }
    
    .milestone {
        break-inside: avoid;
        box-shadow: none;
        transform: none;
    }
    
    .milestone::before {
        display: none;
    }
}

/* Intersection Observer trigger class */
.milestone.in-view .milestone__number {
    animation-delay: 0.2s;
}

.milestone:nth-child(2).in-view .milestone__number {
    animation-delay: 0.4s;
}