/* ============================================
   Layout Styles
   ============================================ */

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(20px);
    background: rgba(2, 6, 23, 0.8);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

nav.scrolled {
    padding: 0.75rem 5%;
    background: rgba(2, 6, 23, 0.95);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.logo::after {
    content: '_';
    animation: blink 1s infinite;
    -webkit-text-fill-color: var(--neon-cyan);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-base);
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::before,
.nav-links a.active::before {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: calc(var(--z-nav) + 1);
    padding: 10px;
}

.mobile-menu span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

.mobile-menu.active span:nth-child(1) {
    transform: rotate(45deg) translateY(7px);
}

.mobile-menu.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-7px);
}

/* Background Effects */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-background);
    pointer-events: none;
}

.gradient-orbs {
    position: fixed;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: var(--z-background);
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: -200px;
    right: -200px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--accent), var(--neon-purple));
    bottom: -150px;
    left: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--secondary), var(--neon-cyan));
    top: 50%;
    left: 30%;
    animation-delay: -10s;
}

/* Sections */
section {
    padding: var(--spacing-xl) 5%;
    position: relative;
    z-index: var(--z-content);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 5% 4rem;
    position: relative;
}

.hero-content {
    max-width: 900px;
    opacity: 0;
    animation: fadeInUp 1s forwards 0.3s;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.2rem;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--neon-cyan);
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-top: 0.5rem;
}

/* Skills Grid */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(20px);
    transition: all var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

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

.skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 30px 60px rgba(30, 58, 138, 0.3);
}

.skill-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    transition: transform var(--transition-base);
}

.skill-card:hover .skill-icon {
    transform: scale(1.1) rotate(5deg);
}

.skill-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.skill-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    backdrop-filter: blur(20px);
    transition: all var(--transition-slow);
    position: relative;
}

.project-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 40px 80px rgba(30, 58, 138, 0.3);
    border-color: var(--primary);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.2), rgba(14, 165, 233, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-icon {
    font-size: 4.5rem;
    transition: transform var(--transition-slow);
    z-index: 1;
}

.project-card:hover .project-icon {
    transform: scale(1.2) rotate(10deg);
}

.project-content {
    padding: 1.75rem;
}

.project-type {
    display: inline-block;
    padding: 0.35rem 0.9rem;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15), rgba(30, 58, 138, 0.15));
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--secondary);
    font-family: var(--font-mono);
    margin-bottom: 1rem;
}

.project-card h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: 0.75rem;
    font-weight: 700;
    transition: color var(--transition-base);
}

.project-card:hover h3 {
    color: var(--secondary-light);
}

.project-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    padding: 0.35rem 0.75rem;
    background: rgba(30, 58, 138, 0.1);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    transition: all var(--transition-base);
}

.project-card:hover .project-tech span {
    background: rgba(30, 58, 138, 0.2);
    color: var(--primary-light);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.project-link:hover {
    color: var(--primary-light);
    background: rgba(30, 58, 138, 0.1);
    transform: translateX(5px);
}

.project-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Timeline */
.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent), var(--neon-cyan));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    padding-left: 4rem;
    padding-bottom: 4rem;
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -10px;
    top: 0;
    width: 24px;
    height: 24px;
    background: var(--bg-dark);
    border: 3px solid var(--primary);
    border-radius: 50%;
    z-index: 1;
    transition: all var(--transition-slow);
    box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.2);
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.3);
    background: var(--primary);
    box-shadow: 0 0 30px var(--primary);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    transition: all var(--transition-slow);
}

.timeline-item:hover .timeline-content {
    border-color: var(--primary);
    transform: translateX(10px);
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.2);
}

.timeline-date {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.15), rgba(14, 165, 233, 0.15));
    border: 1px solid rgba(30, 58, 138, 0.3);
    border-radius: var(--radius-sm);
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    margin-bottom: 1rem;
}

.timeline-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.timeline-company {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.timeline-description ul {
    list-style: none;
}

.timeline-description li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.timeline-description li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
    transition: transform var(--transition-base);
}

.timeline-description li:hover::before {
    transform: translateX(5px);
    color: var(--accent);
}

.timeline-description li:hover {
    color: var(--text-primary);
}

/* Contact Section */
.contact {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    max-width: 900px;
    margin: 0 auto;
    padding: 5rem;
    text-align: center;
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(30, 58, 138, 0.1), transparent, rgba(14, 165, 233, 0.1), transparent);
    animation: rotate 15s linear infinite;
}

.contact-content {
    position: relative;
    z-index: 1;
}

.contact h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 1rem;
    font-weight: 700;
}

.contact p {
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: var(--font-size-lg);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.75rem;
    background: rgba(30, 58, 138, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-bounce);
}

.contact-link:hover {
    border-color: var(--primary);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3);
}

.contact-link svg {
    width: 24px;
    height: 24px;
    fill: var(--primary);
    transition: all var(--transition-base);
}

.contact-link:hover svg {
    transform: scale(1.2);
    fill: var(--accent);
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 5%;
    color: var(--text-secondary);
    border-top: 1px solid var(--glass-border);
    position: relative;
    z-index: var(--z-content);
}

.heart {
    color: var(--accent);
    animation: heartbeat 1.5s ease infinite;
    display: inline-block;
}