#background-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1; /* behind everything */
  pointer-events: none; /* so clicks go through it */
}


.hero {
    text-align: center;
    padding: 4rem 0;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.02) 0%, transparent 70%);
    animation: heroGlow 6s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.05); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary), var(--text-primary));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem auto;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease 0.5s forwards;
}

.about-content {
    margin-bottom: 4rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.text-section {
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInLeft 0.8s ease 0.3s forwards;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--text-primary), var(--text-secondary));
    animation: underlineGrow 1s ease 1s forwards;
}

@keyframes underlineGrow {
    to { width: 50px; }
}

.section-title.centered {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title.centered::after {
    left: 50%;
    transform: translateX(-50%);
}

.section-text {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    opacity: 0;
    transform: translateX(30px);
    animation: slideInRight 0.8s ease 0.5s forwards;
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px) scale(0.9);
    animation: cardEnter 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cardEnter {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
    opacity: 0;
    transform: scale(0.5);
    animation: numberPop 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.3s forwards;
}

@keyframes numberPop {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.stat-card:hover .stat-number {
    transform: scale(1.1);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.skills-section {
    margin-bottom: 4rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
    animation: skillCategoryEnter 0.8s ease forwards;
}

@keyframes skillCategoryEnter {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.skill-category:hover::before {
    opacity: 1;
}

.skill-category:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    position: relative;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--text-primary);
    animation: titleUnderline 1s ease 0.5s forwards;
}

@keyframes titleUnderline {
    to { width: 30px; }
}

.skill-item {
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateX(-20px);
    animation: skillItemEnter 0.6s ease forwards;
}

@keyframes skillItemEnter {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.skill-name {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.skill-bar {
    background: var(--bg-tertiary);
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.skill-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: skillShimmer 2s infinite 1s;
}

@keyframes skillShimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--success), var(--text-primary));
    border-radius: 5px;
    width: 0;
    transition: width 2s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
    position: relative;
    overflow: hidden;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressGlow 3s ease-in-out infinite 2s;
}

@keyframes progressGlow {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.timeline-section {
    margin-bottom: 4rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
    animation: timelineGrow 2s ease 1s forwards;
    transform-origin: top;
    scale: 1 0;
}

@keyframes timelineGrow {
    to {
        scale: 1 1;
    }
}

.timeline-item {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
    opacity: 0;
    animation: timelineItemEnter 0.8s ease forwards;
}

@keyframes timelineItemEnter {
    to {
        opacity: 1;
    }
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
    transform: translateX(-50px);
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    transform: translateX(50px);
}

.timeline-item:nth-child(odd) {
    animation: slideInFromLeft 0.8s ease forwards;
}

.timeline-item:nth-child(even) {
    animation: slideInFromRight 0.8s ease forwards;
}

@keyframes slideInFromLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-date {
    flex: 0 0 100px;
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    position: relative;
    z-index: 2;
}

.timeline-date::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 16px;
    height: 16px;
    background: var(--success);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    border: 4px solid var(--bg-primary);
    transition: all 0.3s ease;
    box-shadow: 0 0 0 4px var(--border);
    animation: dotPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) 1.5s forwards;
}

@keyframes dotPop {
    to {
        transform: translate(-50%, -50%) scale(1);
    }
}

.timeline-item:hover .timeline-date::before {
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 0 0 6px var(--border), 0 0 20px rgba(0, 255, 136, 0.3);
}

.timeline-content {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    margin: 0 2rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timeline-content:hover::before {
    opacity: 1;
}

.timeline-content:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.stat-card:nth-child(1) { animation-delay: 0.8s; }
.stat-card:nth-child(2) { animation-delay: 1s; }
.stat-card:nth-child(3) { animation-delay: 1.2s; }
.stat-card:nth-child(4) { animation-delay: 1.4s; }

.skill-category:nth-child(1) { animation-delay: 0.2s; }
.skill-category:nth-child(2) { animation-delay: 0.4s; }
.skill-category:nth-child(3) { animation-delay: 0.6s; }

.skill-item:nth-child(1) { animation-delay: 0.1s; }
.skill-item:nth-child(2) { animation-delay: 0.2s; }
.skill-item:nth-child(3) { animation-delay: 0.3s; }
.skill-item:nth-child(4) { animation-delay: 0.4s; }
.skill-item:nth-child(5) { animation-delay: 0.5s; }

.timeline-item:nth-child(1) { animation-delay: 1.8s; }
.timeline-item:nth-child(2) { animation-delay: 2s; }
.timeline-item:nth-child(3) { animation-delay: 2.2s; }

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

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 50px;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        animation: fadeInUp 0.8s ease forwards;
        transform: translateY(30px);
    }
    
    .timeline-date {
        position: absolute;
        left: 0;
        top: 0;
        flex: none;
    }
    
    .timeline-date::before {
        left: 20px;
    }
    
    .timeline-content {
        margin: 0;
    }
}