/* Custom CSS for Vertical Timeline Portfolio */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* Typography Setup */
body {
    font-family: 'Inter', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, .font-heading {
    font-family: 'Outfit', sans-serif;
}

/* Glassmorphism Styles */
.glass-panel {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.dark .glass-panel {
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

.dark ::-webkit-scrollbar-track {
    background: #090d16;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 9999px;
}

.dark ::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* Timeline Components */
.timeline-line-gradient {
    background: linear-gradient(180deg, #3b82f6 0%, #8b5cf6 50%, #10b981 100%);
}

.timeline-dot-pulse {
    position: relative;
}

.timeline-dot-pulse::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: inherit;
    opacity: 0.4;
    animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

/* Micro-interactions & Hover Effects */
.timeline-card {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.timeline-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.dark .timeline-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* Smooth Transitions for Active Categories */
.category-btn {
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Profile Photo Camera Overlay */
.profile-overlay {
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.profile-container:hover .profile-overlay {
    opacity: 1;
}

/* Custom CSS Keyframes / Animations */
@keyframes ping {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    70%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

.animate-pulse-slow {
    animation: pulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: .5;
    }
}

/* Card Entry Animation on Filter */
.card-entry {
    animation: cardFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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