/* ============================================
   VARIABLES & RESET
   ============================================ */
:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --accent: #6d28d9;
    --accent-light: #7c3aed;
    --accent-glow: rgba(109, 40, 217, 0.15);
    --text-primary: #e8edf5;
    --text-secondary: #8892a4;
    --text-muted: #5a6478;
    --border: #1e2a3a;
    --gradient-start: #7c3aed;
    --gradient-end: #4c1d95;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 70px; }

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

#particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; background: var(--bg-primary); }

#navbar, #hero, section, footer { position: relative; z-index: 1; }

/* ============================================
   NAVIGATION
   ============================================ */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 15, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

#navbar.scrolled { border-bottom-color: var(--border); }

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 65px;
    position: relative;
}

.nav-logo {
    font-family: 'Mr Dafoe', cursive;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-light);
    text-decoration: none;
    letter-spacing: 0.5px;
}

.nav-links { display: flex; gap: 2rem; align-items: center; margin: 0 auto; }

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

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

/* Resume CTA - always visible on desktop */
.nav-cta {
    padding: 0.5rem 1.2rem;
    background: var(--accent);
    color: #fff !important;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s;
    white-space: nowrap;
    -webkit-text-fill-color: #fff;
}

.nav-cta:hover { background: var(--accent-light); transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-secondary); margin: 5px 0; transition: 0.3s; }

/* ============================================
   HERO
   ============================================ */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    padding: 2rem;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(167, 139, 250, 0.05) 0%, transparent 50%);
}

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

.hero-greeting {
    font-size: 1rem;
    color: var(--accent-light);
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.8rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.2s;
}

.hero-name {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #a78bfa 0%, #e0d4ff 50%, #4c1d95 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeUp 0.6s ease forwards 0.4s, shimmer 4s ease-in-out infinite 1.2s;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    50% { background-position: 100% center; }
    100% { background-position: 0% center; }
}

.hero-tagline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 0.8rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.6s;
}

.tagline-item { font-size: 1.05rem; color: var(--text-secondary); font-weight: 400; }
.tagline-divider { color: var(--accent); font-weight: 300; }

/* Typing animation for value prop */
.hero-typing {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
    min-height: 1.8rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.7s;
}

.hero-typing .cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--accent-light);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.8s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-location {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.8s;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 1s;
}

.btn {
    padding: 0.75rem 1.8rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s;
    cursor: pointer;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(124, 58, 237, 0.3); }

.btn-outline { border: 1.5px solid var(--border); color: var(--text-primary); background: transparent; }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-light); }

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    animation: fadeIn 0.6s ease forwards 1.4s;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

/* ============================================
   HIGHLIGHT BAR (Key Metrics)
   ============================================ */
.highlight-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 900px;
    margin: -2rem auto 0;
    padding: 2rem 2rem 3rem;
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 1.2s;
}

.highlight-item {
    text-align: center;
    padding: 1.2rem 0.5rem;
    background: rgba(26, 35, 50, 0.7);
    border: 1px solid var(--border);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.highlight-item:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
    transform: translateY(-3px);
}

.highlight-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-light);
    line-height: 1.2;
}

.highlight-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.3rem;
    display: block;
}

/* ============================================
   SECTIONS
   ============================================ */
section { padding: 5rem 0; background: transparent; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

/* ============================================
   ABOUT
   ============================================ */
#about { background: rgba(17, 24, 39, 0.85); }

.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 3rem; align-items: start; }

.about-text p { color: var(--text-secondary); margin-bottom: 1rem; font-size: 1.02rem; }
.about-text strong { color: var(--accent-light); font-weight: 600; }

.about-stats { display: flex; flex-direction: column; gap: 1rem; }

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.2rem 1.5rem;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); transform: translateY(-2px); }

.stat-number { font-size: 2rem; font-weight: 700; color: var(--accent-light); }
.stat-suffix { font-size: 1.2rem; font-weight: 600; color: var(--accent-light); }
.stat-label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; text-transform: uppercase; letter-spacing: 1px; }

/* ============================================
   TIMELINE / EXPERIENCE
   ============================================ */
.timeline { position: relative; padding-left: 2rem; }

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item { position: relative; margin-bottom: 2.5rem; }

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 6px;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    transform: translateX(-5px);
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 12px var(--accent-glow);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem 2rem;
    margin-left: 1rem;
    transition: all 0.3s;
}

.timeline-content:hover { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); }

.job-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.3rem; }
.job-header h3 { font-size: 1.3rem; font-weight: 700; color: var(--accent-light); }
.job-duration { font-size: 0.85rem; color: var(--text-muted); }

.job-role { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.8rem; }
.job-role h4 { font-size: 1.05rem; font-weight: 600; }
.job-date { font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }

.job-bullets { list-style: none; padding: 0; }

.job-bullets li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: 0.6rem;
    color: var(--text-secondary);
    font-size: 0.93rem;
    line-height: 1.6;
}

.job-bullets li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

/* Collapsible bullets */
.job-bullets.collapsible li:nth-child(n+5) {
    display: none;
}

.job-bullets.collapsible.expanded li {
    display: block;
}

.show-more-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--accent-light);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    margin-top: 0.6rem;
    transition: all 0.2s;
}

.show-more-btn:hover {
    border-color: var(--accent);
    background: rgba(124, 58, 237, 0.1);
}

/* ============================================
   SKILLS
   ============================================ */
#skills { background: rgba(17, 24, 39, 0.85); }

.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.8rem;
    transition: all 0.3s;
}

.skill-category:hover { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); transform: translateY(-2px); }

.skill-icon { font-size: 1.8rem; margin-bottom: 0.8rem; }
.skill-category h3 { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; color: var(--accent-light); }

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

.tag {
    padding: 0.35rem 0.8rem;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: 20px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.tag:hover { background: rgba(124, 58, 237, 0.2); color: var(--text-primary); border-color: var(--accent); }

/* Skill tag slide-in */
.tag-hidden {
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

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

/* ============================================
   EDUCATION
   ============================================ */
.edu-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

.edu-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem;
    transition: all 0.3s;
}

.edu-card:hover { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); }

.edu-year {
    font-size: 0.8rem;
    color: var(--accent-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.edu-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
.edu-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================
   CONTACT
   ============================================ */
#contact { background: rgba(17, 24, 39, 0.85); text-align: center; }

.contact-text { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 2.5rem; }

.contact-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; max-width: 800px; margin: 0 auto; }

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.contact-card:hover { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); transform: translateY(-3px); }

.contact-icon { font-size: 1.5rem; color: var(--accent-light); font-weight: 700; }
.contact-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.contact-value { font-size: 0.85rem; color: var(--text-secondary); word-break: break-all; }

/* ============================================
   FOOTER
   ============================================ */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    display: inline-block;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
}

/* Active nav link highlight */
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a.active::after {
    width: 100%;
}

/* Hero CTA pulse on load */
@keyframes ctaPulse {
    0% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.5); }
    50% { box-shadow: 0 0 0 12px rgba(124, 58, 237, 0); }
    100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0); }
}

.pulse-once {
    animation: ctaPulse 1.5s ease-out 1.4s 1;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
    40% { transform: rotate(45deg) translateY(-8px); }
    60% { transform: rotate(45deg) translateY(-4px); }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .nav-links { gap: 1rem; }
    .nav-links a { font-size: 0.82rem; }
    .nav-cta { font-size: 0.78rem; padding: 0.4rem 0.9rem; }
    .highlight-bar { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}

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

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 65px;
        left: 0;
        right: 0;
        background: rgba(10, 15, 26, 0.98);
        padding: 1rem 2rem;
        border-bottom: 1px solid var(--border);
        gap: 0;
    }

    .nav-links.active .nav-cta {
        display: block !important;
        position: static;
        margin-top: 0.75rem;
        padding: 0.75rem 1.2rem;
        text-align: center;
        border-radius: 6px;
        font-size: 0.9rem;
        border-bottom: none;
        color: #fff !important;
        background: var(--accent);
    }

    .nav-links.active a {
        padding: 0.75rem 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active a:last-child { border-bottom: none; }

    .hero-tagline { flex-direction: column; gap: 0.3rem; }
    .tagline-divider { display: none; }
    .hero-actions { flex-direction: column; align-items: center; }

    .highlight-bar { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; padding: 1.5rem 1.2rem 2rem; }
    .highlight-number { font-size: 1.4rem; }
    .highlight-label { font-size: 0.65rem; }

    .about-grid { grid-template-columns: 1fr; }
    .about-photo { text-align: center; }
    .about-stats { flex-direction: column; }

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

    .job-role { flex-direction: column; gap: 0.2rem; }
    .job-header { flex-direction: column; gap: 0.2rem; }

    section { padding: 3rem 0; }
    .container { padding: 0 1.2rem; }
    .section-title { font-size: 1.6rem; margin-bottom: 2rem; }
    .timeline-content { padding: 1.2rem 1.2rem; }
}

/* ============================================
   KEYBOARD FOCUS STYLES
   ============================================ */
*:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 3px;
    border-radius: 4px;
}

.btn:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.nav-links a:focus-visible::after {
    width: 100%;
}

.contact-card:focus-visible,
.edu-card:focus-visible,
.skill-category:focus-visible,
.stat-card:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 2px;
    border-color: var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    #particles { display: none; }

    .fade-in {
        opacity: 1;
        transform: none;
    }

    .hero-greeting,
    .hero-name,
    .hero-tagline,
    .hero-typing,
    .hero-location,
    .hero-actions,
    .scroll-indicator,
    .highlight-bar {
        opacity: 1;
        animation: none;
        transform: none;
    }
}