.timeline{position:relative;max-width:800px;margin:0 auto}.timeline::after{content:'';position:absolute;width:3px;background-color:var(--color-surface-light);top:0;bottom:0;left:50%;margin-left:-1.5px}.timeline-item{padding:1rem 3rem;position:relative;width:50%}.timeline-item .timeline-marker{content:'';position:absolute;width:50px;height:50px;right:-25px;background-color:var(--color-background);border:4px solid var(--color-primary);top:25px;border-radius:50%;z-index:1;display:flex;justify-content:center;align-items:center;font-size:1.5rem;color:var(--color-primary)}.timeline-item:nth-child(odd){left:0}.timeline-item:nth-child(even){left:50%}.timeline-item:nth-child(even) .timeline-marker{left:-25px}.timeline-content{padding:2rem;background:linear-gradient(135deg,rgba(26,13,64,0.8) 0%,rgba(10,20,40,0.9) 100%);backdrop-filter:blur(10px);position:relative;border-radius:var(--border-radius);border:1px solid var(--color-border)}.timeline-content::after{content:" ";position:absolute;top:32px;right:-15px;border-top:15px solid transparent;border-bottom:15px solid transparent;border-left:15px solid rgba(26,13,64,0.9)}.timeline-item:nth-child(even) .timeline-content::after{left:-15px;border-left:none;border-right:15px solid rgba(26,13,64,0.9)}.timeline-header{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;margin-bottom:1rem}.timeline-header h3{color:var(--color-text-primary);font-size:1.3rem}.timeline-date{background-color:var(--color-surface-light);color:var(--color-text-primary);padding:0.25rem 0.75rem;border-radius:999px;font-size:0.8rem;font-family:var(--font-secondary);white-space:nowrap}.timeline-body h4{color:var(--color-primary);margin-bottom:0.5rem}.timeline-body p{font-size:0.95rem;margin-bottom:1rem}.timeline-skills{display:flex;flex-wrap:wrap;gap:0.5rem}.skill-badge{background-color:rgba(102,126,234,0.1);color:var(--color-primary-light);padding:0.25rem 0.75rem;border-radius:4px;font-size:0.8rem;font-family:var(--font-secondary)}.certifications{margin-top:6rem;text-align:center}.certifications h3{margin-bottom:3rem}.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.cert-item{background:linear-gradient(135deg,rgba(26,13,64,0.8) 0%,rgba(10,20,40,0.9) 100%);backdrop-filter:blur(10px);padding:2rem;border-radius:var(--border-radius);border:1px solid var(--color-border);transition:transform var(--transition-speed)}.cert-item:hover{transform:translateY(-5px);border-color:var(--color-primary)}.cert-item i{font-size:2.5rem;color:var(--color-accent-orange);margin-bottom:1rem}.cert-item h4{color:var(--color-text-primary);margin-bottom:0.5rem}@media screen and (max-width:768px){.timeline::after{left:18px;width:2px}.timeline-item{width:100%;padding-left:55px;padding-right:1rem;padding-top:0.5rem;padding-bottom:1rem;margin-bottom:1.5rem}.timeline-item:nth-child(odd),.timeline-item:nth-child(even){left:0}.timeline-marker,.timeline-item:nth-child(even) .timeline-marker{left:0;width:36px;height:36px;top:15px;font-size:1.1rem;border-width:3px}.timeline-content{padding:1.25rem;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.timeline-content::after,.timeline-item:nth-child(even) .timeline-content::after{left:-10px;border-right:10px solid var(--color-surface);border-left:none;top:20px;border-top:10px solid transparent;border-bottom:10px solid transparent}.timeline-header{flex-direction:column;align-items:flex-start;gap:0.5rem;margin-bottom:1rem}.timeline-header h3{font-size:1.1rem;line-height:1.3;margin:0;color:var(--color-primary);font-weight:600}.timeline-body h4{font-size:1rem;margin-bottom:0.75rem;color:var(--color-text-primary);font-weight:500}.timeline-body p{font-size:0.9rem;line-height:1.6;margin-bottom:1rem;word-wrap:break-word;overflow-wrap:break-word;color:var(--color-text-secondary)}.timeline-skills{gap:0.5rem;flex-wrap:wrap}.skill-badge{font-size:0.8rem;padding:0.3rem 0.7rem;border-radius:15px;background:var(--color-primary);color:white;font-weight:500}.timeline-date{background:linear-gradient(135deg,var(--color-primary),var(--color-accent-orange));color:white;font-weight:500;font-size:0.8rem;padding:0.4rem 0.8rem;border-radius:20px}.cert-grid{grid-template-columns:1fr;gap:1.5rem;padding:0 1rem}.cert-item{padding:1.5rem;border-radius:8px;background:linear-gradient(135deg,rgba(26,13,64,0.8) 0%,rgba(10,20,40,0.9) 100%);backdrop-filter:blur(10px);border:1px solid var(--color-border)}}@media screen and (max-width:480px){.timeline::after{left:15px}.timeline-item{padding-left:45px;padding-right:0.5rem;margin-bottom:1rem}.timeline-marker,.timeline-item:nth-child(even) .timeline-marker{width:30px;height:30px;font-size:1rem;left:0;border-width:2px}.timeline-content{padding:1rem;border-radius:6px}.timeline-header h3{font-size:1rem;line-height:1.2}.timeline-body h4{font-size:0.9rem;margin-bottom:0.5rem}.timeline-body p{font-size:0.85rem;line-height:1.5;margin-bottom:0.75rem}.timeline-date{font-size:0.75rem;padding:0.3rem 0.6rem}.skill-badge{font-size:0.75rem;padding:0.2rem 0.5rem}.cert-item{padding:1.25rem}}