/* Section À propos avec effet holographique */
.about-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
    margin-bottom: 5rem;
}

.profile-image {
    position: relative;
    animation: slideInLeft 1s ease-out 0.3s both;
}

.profile-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 4rem;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.profile-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--primary-gradient);
    opacity: 0.1;
    transform: rotate(45deg);
    animation: rotate 20s linear infinite;
}

.profile-placeholder:hover {
    transform: scale(1.05);
    box-shadow: 
        0 35px 70px rgba(139, 92, 246, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.about-content {
    animation: slideInRight 1s ease-out 0.5s both;
}

.about-content h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.highlight-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 600;
    position: relative;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: 1px;
    animation: glow-line 2s ease-in-out infinite alternate;
}

/* Section parcours avec timeline futuriste */
.journey-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 4rem;
    border-radius: 30px;
    margin-bottom: 5rem;
    border: 1px solid var(--glass-border);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out 0.7s both;
}

.journey-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 49%, rgba(139, 92, 246, 0.1) 50%, transparent 51%),
        linear-gradient(-45deg, transparent 49%, rgba(59, 130, 246, 0.1) 50%, transparent 51%);
    background-size: 20px 20px;
    opacity: 0.3;
    animation: backgroundMove 10s linear infinite;
}

.journey-section h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline {
    position: relative;
    z-index: 1;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
}

.timeline-item {
    display: flex;
    margin-bottom: 4rem;
    position: relative;
    opacity: 0;
    animation: slideInTimeline 0.8s ease-out forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.9s; }
.timeline-item:nth-child(2) { animation-delay: 1.1s; }
.timeline-item:nth-child(3) { animation-delay: 1.3s; }
.timeline-item:nth-child(4) { animation-delay: 1.5s; }

@keyframes slideInTimeline {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.timeline-content {
    flex: 1;
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin: 0 2rem;
    border: 1px solid var(--glass-border);
    position: relative;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--accent-purple);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(139, 92, 246, 0.2);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 25px;
    width: 0;
    height: 0;
    border: 15px solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -30px;
    border-left-color: var(--glass-border);
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -30px;
    border-right-color: var(--glass-border);
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary-gradient);
    border-radius: 50%;
    border: 4px solid var(--bg-dark);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.8);
    animation: pulse 2s infinite;
}

.timeline-year {
    font-family: 'Orbitron', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-family: 'Orbitron', monospace;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.timeline-description {
    color: var(--text-muted);
    line-height: 1.7;
}

/* Section compétences avec grid holographique */
.skills-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 4rem;
    border-radius: 30px;
    margin-bottom: 5rem;
    border: 1px solid var(--glass-border);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 1.7s both;
}

.skills-section h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 3rem;
    text-align: center;
}

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

.skill-category {
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.skill-category:hover::before {
    transform: scaleX(1);
}

.skill-category:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--accent-purple);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(139, 92, 246, 0.2);
}

.skill-category h3 {
    font-family: 'Orbitron', monospace;
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 0.5rem 0;
    color: var(--text-muted);
    position: relative;
    padding-left: 2rem;
    transition: color 0.3s ease;
}

.skill-category li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    opacity: 0.3;
    transition: all 0.3s ease;
}

.skill-category li:hover {
    color: var(--text-secondary);
}

.skill-category li:hover::before {
    color: var(--accent-purple);
    opacity: 1;
    animation: blink 2s infinite;
    transform: scale(1.2);
}

/* CTA section about */
.cta-section {
    background: var(--secondary-gradient);
    color: var(--text-primary);
    padding: 4rem;
    border-radius: 30px;
    text-align: center;
    margin-bottom: 5rem;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out 1.9s both;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 30%, rgba(139, 92, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(59, 130, 246, 0.3) 0%, transparent 50%);
    animation: backgroundShift 8s ease-in-out infinite;
}

.cta-section h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Responsive spécifique about */
@media (max-width: 768px) {
    .about-section {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column;
        padding-left: 50px;
    }

    .timeline-item:nth-child(even) {
        flex-direction: column;
    }

    .timeline-content {
        margin: 0;
    }

    .timeline-content::before {
        display: none;
    }

    .timeline-dot {
        left: 20px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .journey-section,
    .skills-section,
    .cta-section {
        padding: 2.5rem 1.5rem;
    }
}