/* ============================================
   Kevin Nadjarian — CV Website
   Ultra Modern Dark Theme
   ============================================ */

:root {
    --bg: #0a0a0b;
    --bg-secondary: #111113;
    --bg-card: #16161a;
    --bg-card-hover: #1c1c21;
    --text: #e8e8ed;
    --text-secondary: #8b8b9e;
    --text-muted: #56566a;
    --accent: #6c63ff;
    --accent-light: #8b83ff;
    --accent-glow: rgba(108, 99, 255, 0.15);
    --accent-glow-strong: rgba(108, 99, 255, 0.3);
    --gradient-1: linear-gradient(135deg, #6c63ff, #b24dff);
    --gradient-2: linear-gradient(135deg, #6c63ff 0%, #00d4aa 100%);
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --radius: 16px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection {
    background: var(--accent);
    color: white;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Cursor glow */
.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s;
}

/* Noise texture overlay */
.noise {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    transition: var(--transition);
}

.nav.scrolled {
    padding: 12px 0;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.accent {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
    border-radius: 1px;
}

.nav-link:hover {
    color: var(--text);
}

.nav-link:hover::after {
    width: 100%;
}

/* Nav right group */
.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px 14px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
}

.lang-switch:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
}

.lang-option {
    transition: var(--transition);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
}

.lang-option.active {
    color: var(--accent-light);
}

.lang-option:not(.active):hover {
    color: var(--text-secondary);
}

.lang-divider {
    color: var(--text-muted);
    opacity: 0.3;
}

/* Language transition */
.lang-transitioning [data-i18n] {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.15s, transform 0.15s;
}

[data-i18n] {
    transition: opacity 0.15s, transform 0.15s;
}

/* Mobile toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(10, 10, 11, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: var(--transition);
}

.mobile-link:hover {
    color: var(--text);
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }
    .mobile-menu { display: flex; }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.grid-lines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(108, 99, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 99, 255, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 100px;
    background: var(--accent-glow);
    border: 1px solid rgba(108, 99, 255, 0.2);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 32px;
}

.pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #00d4aa;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(0, 212, 170, 0); }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 24px;
}

.hero-line {
    display: block;
}

.hero-line--accent {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.separator {
    color: var(--text-muted);
    margin: 0 4px;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

/* Buttons */
.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 24px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(108, 99, 255, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.03);
}

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-plus {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: var(--border);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: -60px;
    left: 0;
    width: 100%;
    height: 60px;
    background: linear-gradient(to bottom, transparent, var(--accent));
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% { top: -60px; }
    100% { top: 60px; }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 120px 0;
    position: relative;
}

.section--dark {
    background: var(--bg-secondary);
}

.section-header {
    margin-bottom: 64px;
}

.section-tag {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text);
    line-height: 1.7;
    margin-bottom: 24px;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-text strong {
    color: var(--text);
    font-weight: 600;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.detail-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.detail-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-xs);
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-light);
    flex-shrink: 0;
}

.detail-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.detail-value {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text);
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ============================================
   Experience / Timeline
   ============================================ */
.timeline {
    position: relative;
}

.timeline-item {
    display: flex;
    gap: 32px;
    padding-bottom: 48px;
}

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

.timeline-item:last-child .timeline-line {
    display: none;
}

.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow-strong);
    flex-shrink: 0;
}

.timeline-line {
    width: 1px;
    flex: 1;
    background: linear-gradient(to bottom, var(--accent), transparent);
    margin-top: 8px;
}

.timeline-content {
    flex: 1;
    padding-top: 0;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 16px;
}

.timeline-role {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-company {
    font-size: 0.9rem;
    color: var(--accent-light);
    font-weight: 500;
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    padding: 4px 12px;
    border-radius: 100px;
    background: var(--accent-glow);
    border: 1px solid rgba(108, 99, 255, 0.15);
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
}

@media (max-width: 768px) {
    .timeline-item { gap: 20px; }
    .timeline-header { flex-direction: column; }
}

/* ============================================
   Projects
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    position: relative;
    padding: 32px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
    overflow: hidden;
}

.project-card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-1);
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.project-card:hover .project-card-glow {
    opacity: 1;
}

.project-card--featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.08), rgba(178, 77, 255, 0.05));
    border-color: rgba(108, 99, 255, 0.15);
}

.project-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--gradient-1);
    color: white;
}

.project-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-light);
    margin-bottom: 20px;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--accent-light);
    border: 1px solid rgba(108, 99, 255, 0.2);
    background: var(--accent-glow);
}

@media (max-width: 768px) {
    .projects-grid { grid-template-columns: 1fr; }
    .project-card--featured { grid-column: span 1; }
}

/* ============================================
   Skills
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 64px;
}

.skill-category {
    padding: 32px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.skill-category-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-xs);
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-light);
}

.skill-category h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.skill-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.skill-bar {
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--gradient-1);
    width: 0;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
    .skills-grid { grid-template-columns: 1fr; }
}

/* Certifications */
.certs-section {
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.certs-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.cert-item:hover {
    border-color: var(--border-hover);
}

.cert-year {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-light);
    flex-shrink: 0;
}

.cert-name {
    font-size: 0.9rem;
    font-weight: 500;
    flex: 1;
}

.cert-issuer {
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ============================================
   Contact
   ============================================ */
.contact-content {
    max-width: 600px;
}

.contact-lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateX(8px);
}

.contact-card svg:first-child {
    color: var(--accent-light);
    flex-shrink: 0;
}

.contact-card div {
    flex: 1;
}

.contact-card-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.contact-card-value {
    font-size: 1rem;
    font-weight: 600;
}

.contact-arrow {
    color: var(--text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}

.contact-card:hover .contact-arrow {
    color: var(--accent-light);
    transform: translate(4px, -4px);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.footer-year {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================
   Animations
   ============================================ */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-in:nth-child(1) { animation-delay: 0.1s; }
.animate-in:nth-child(2) { animation-delay: 0.2s; }
.animate-in:nth-child(3) { animation-delay: 0.3s; }
.animate-in:nth-child(4) { animation-delay: 0.4s; }
.animate-in:nth-child(5) { animation-delay: 0.5s; }
.animate-in:nth-child(6) { animation-delay: 0.6s; }
.animate-in:nth-child(7) { animation-delay: 0.7s; }

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    .section {
        padding: 80px 0;
    }
}