/* =============================================================
   ARJIT CHAUHAN — PORTFOLIO
   Bespoke Design System
   Fonts: Inter (body/headings) + JetBrains Mono (accents)
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  --bg:           #F9F8F5;
  --bg-white:     #FFFFFF;
  --bg-dark:      #111111;
  --ink:          #111111;
  --ink-muted:    #6B7280;
  --ink-faint:    #B0AFA8;
  --accent:       #B87333;
  --accent-light: rgba(184,115,51,0.12);
  --border:       #E8E6DF;
  --radius:       6px;
  --max-w:        1100px;
  --font:         'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:         'JetBrains Mono', 'Courier New', monospace;
  --ease:         cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 62.5%; }
body {
  font-family: var(--font);
  font-size: 1.6rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }
ul, ol { list-style: none; }

/* ── Utility ───────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 4rem;
}
.section-label {
  display: block;
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.6rem;
}
.section-title {
  font-size: clamp(3rem, 4vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 2rem;
}
.section-desc {
  font-size: 1.8rem;
  line-height: 1.65;
  color: var(--ink-muted);
  max-width: 560px;
}

/* Divider */
.divider {
  width: 40px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 4rem;
}

/* ── Navigation ────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  height: 60px;
  display: flex;
  align-items: center;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
#navbar.scrolled {
  background: rgba(249, 248, 245, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 4rem;
}
.nav-logo {
  font-family: var(--font);
  font-size: 1.8rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  transition: color 0.2s;
}
#navbar.scrolled .nav-logo {
  color: var(--ink);
}
.nav-links {
  display: flex;
  gap: 3.6rem;
  align-items: center;
}
.nav-links a {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: rgba(255,255,255,0.75);
  transition: color 0.2s var(--ease);
}
.nav-links a:hover { color: #FFFFFF; }
#navbar.scrolled .nav-links a {
  color: var(--ink-muted);
}
#navbar.scrolled .nav-links a:hover {
  color: var(--ink);
}

/* ── Hero ───────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-dark) url('../images/intro-bg.jpg') no-repeat center / cover;
  background-attachment: fixed;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.88) 0%, rgba(0,0,0,0.65) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 4rem;
  padding-top: 80px;
}
.hero-overline {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.hero-overline::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.hero-name {
  font-size: clamp(5.5rem, 8vw, 9rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: #FFFFFF;
  margin-bottom: 2.4rem;
}
.hero-role {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 3rem;
}
.hero-desc {
  font-size: 1.85rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.68);
  max-width: 500px;
  margin-bottom: 4.8rem;
  font-weight: 300;
}
.hero-cta {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  margin-bottom: 8rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 1.2rem 2.6rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.22s var(--ease);
  border: 1.5px solid transparent;
}
.btn-primary {
  background: #FFFFFF;
  color: var(--ink);
  border-color: #FFFFFF;
}
.btn-primary:hover {
  background: rgba(255,255,255,0.88);
  color: var(--ink);
}
.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.8);
  border-color: rgba(255,255,255,0.3);
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,0.7);
  color: #FFFFFF;
}
.hero-socials {
  display: flex;
  gap: 2.4rem;
}
.hero-socials a {
  font-size: 1.35rem;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  transition: color 0.2s;
}
.hero-socials a:hover { color: rgba(255,255,255,0.9); }
.hero-socials a i { font-size: 1.8rem; }

/* Scroll cue */
.hero-scroll {
  position: absolute;
  bottom: 3.6rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  color: rgba(255,255,255,0.3);
  font-family: var(--mono);
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: scrollBounce 2.2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}
.hero-scroll i { font-size: 1.6rem; }

/* ── About ─────────────────────────────────────────────────── */
#about {
  background: var(--bg-white);
  padding: 12rem 0;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8rem;
  align-items: start;
}
.about-bio {
  font-size: 1.75rem;
  line-height: 1.75;
  color: var(--ink-muted);
  margin-bottom: 3rem;
}
.about-bio strong {
  color: var(--ink);
  font-weight: 600;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.4rem;
}
.tag {
  font-family: var(--mono);
  font-size: 1.15rem;
  padding: 0.5rem 1.2rem;
  border-radius: 3px;
  background: var(--bg);
  color: var(--ink-muted);
  border: 1px solid var(--border);
  letter-spacing: 0.02em;
}
.about-facts {
  border-top: 1px solid var(--border);
}
.fact-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--border);
}
.fact-label {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.fact-value {
  font-size: 1.5rem;
  color: var(--ink-muted);
  line-height: 1.5;
}
.fact-value a { color: var(--accent); }
.fact-value a:hover { color: var(--ink); }

/* ── Focus Cards ───────────────────────────────────────────── */
#focus {
  background: var(--bg);
  padding: 10rem 0;
}
.focus-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 6rem;
}
.focus-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3.2rem 2.8rem;
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}
.focus-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.focus-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 2rem;
  color: var(--accent);
}
.focus-icon svg { width: 100%; height: 100%; stroke: currentColor; fill: none; stroke-width: 1.5; }
.focus-card h3 {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
  color: var(--ink);
}
.focus-card p {
  font-size: 1.4rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ── Experience ────────────────────────────────────────────── */
#experience {
  background: var(--bg-white);
  padding: 12rem 0;
}
.exp-list {
  margin-top: 6rem;
}
.exp-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 5rem;
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}
.exp-item:last-child { border-bottom: 1px solid var(--border); }
.exp-meta {
  padding-top: 0.3rem;
}
.exp-company {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.exp-period {
  font-family: var(--mono);
  font-size: 1.15rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.exp-role {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.8rem;
}
.exp-bullets {
  margin: 0;
}
.exp-bullets li {
  font-size: 1.5rem;
  line-height: 1.7;
  color: var(--ink-muted);
  padding-left: 1.6rem;
  position: relative;
  margin-bottom: 1rem;
}
.exp-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ── Projects ──────────────────────────────────────────────── */
#projects {
  background: var(--bg);
  padding: 12rem 0;
}
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.4rem;
  margin-top: 6rem;
}
.project-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3.6rem;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}
.project-card:hover {
  border-color: rgba(184,115,51,0.4);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.project-name {
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.3;
}
.project-link {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--ink-faint);
  font-size: 1.3rem;
  transition: all 0.2s;
}
.project-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.project-desc {
  font-size: 1.5rem;
  line-height: 1.65;
  color: var(--ink-muted);
  flex: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.project-tag {
  font-family: var(--mono);
  font-size: 1.1rem;
  padding: 0.35rem 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

/* ── Contact ────────────────────────────────────────────────── */
#contact {
  background: var(--bg-dark);
  padding: 12rem 0;
  text-align: center;
}
.contact-inner {
  max-width: 640px;
  margin: 0 auto;
}
#contact .section-label { color: rgba(255,255,255,0.25); }
#contact .section-title { color: #FFFFFF; }
.contact-email {
  display: inline-block;
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #FFFFFF;
  border-bottom: 1.5px solid rgba(255,255,255,0.15);
  padding-bottom: 0.3rem;
  margin: 2.4rem 0 4rem;
  transition: border-color 0.2s, color 0.2s;
}
.contact-email:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.contact-desc {
  font-size: 1.6rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 5rem;
}
.contact-socials {
  display: flex;
  justify-content: center;
  gap: 3.2rem;
}
.contact-socials a {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.4rem;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.03em;
  transition: color 0.2s;
}
.contact-socials a:hover { color: #FFFFFF; }
.contact-socials a i { font-size: 1.9rem; }

/* ── Footer ─────────────────────────────────────────────────── */
#footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 3rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy {
  font-family: var(--mono);
  font-size: 1.15rem;
  color: rgba(255,255,255,0.22);
  letter-spacing: 0.02em;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .focus-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 5rem; }
  .exp-item { grid-template-columns: 1fr; gap: 1.2rem; }
}
@media (max-width: 768px) {
  .container { padding: 0 2.4rem; }
  .hero-content { padding: 80px 2.4rem 0; }
  .nav-inner { padding: 0 2.4rem; }
  .hero-name { font-size: clamp(4rem, 12vw, 6rem); }
  .projects-grid { grid-template-columns: 1fr; }
  .focus-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  #about, #focus, #experience, #projects, #contact { padding: 8rem 0; }
}
@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { text-align: center; justify-content: center; }
  .footer-inner { flex-direction: column; gap: 1.2rem; text-align: center; }
}

/* ── AI Explorations (Cyber-HUD Overhaul) ──────────────────── */
#ai-explorations {
  position: relative;
  background: #030303;
  padding: 16rem 0;
  overflow: hidden;
  border-top: 2px solid rgba(184,115,51,0.25);
}

/* Cyber Atmosphere */
#ai-explorations::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(184,115,51,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(184,115,51,0.05) 0%, transparent 50%);
  pointer-events: none;
}

.ai-scanlines {
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.2) 50%);
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 5;
  opacity: 0.6;
}

.ai-scanner {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, transparent, rgba(184,115,51,0.4), transparent);
  box-shadow: 0 0 20px rgba(184,115,51,0.2);
  animation: scanAi 12s linear infinite;
  z-index: 6;
}

@keyframes scanAi {
  0% { top: -10%; }
  100% { top: 110%; }
}

#ai-explorations .section-label { color: var(--accent); opacity: 0.9; text-shadow: 0 0 10px rgba(184,115,51,0.5); font-weight: 700; }
#ai-explorations .section-title { color: #FFFFFF; font-size: 4rem; margin-bottom: 2rem; }
#ai-explorations .section-desc { color: rgba(255,255,255,0.4); max-width: 600px; margin: 0 auto; }

/* The Command Console */
.ai-console-wrapper {
  margin-top: 8rem;
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.ai-console {
  position: relative;
  width: 100%;
  max-width: 800px;
  background: rgba(12, 12, 12, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(184,115,51,0.2);
  clip-path: polygon(
    0 20px, 20px 0, 
    calc(100% - 20px) 0, 100% 20px, 
    100% calc(100% - 20px), calc(100% - 20px) 100%, 
    20px 100%, 0 calc(100% - 20px)
  );
  padding: 0;
  transition: all 0.6s var(--ease);
}

.ai-console:hover {
  border-color: rgba(184,115,51,0.7); /* Brighter border on hover */
  box-shadow: 0 40px 100px rgba(0,0,0,0.9), 0 0 40px rgba(184,115,51,0.2);
  background: rgba(15, 15, 15, 0.9); /* Subtle background shift */
  transform: translateY(-8px) rotateX(1deg);
}

/* Console Header */
.ai-console-header {
  background: rgba(184,115,51,0.1);
  padding: 1.4rem 2.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(184,115,51,0.2);
}

.ai-console-title {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.ai-console-controls {
  display: flex;
  gap: 0.8rem;
}

.ai-console-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
}
.ai-console-dot.active { background: var(--accent); box-shadow: 0 0 5px var(--accent); }

/* Console Body */
.ai-console-body {
  padding: 4rem;
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 4rem;
}

.ai-console-main {
  text-align: left;
}

.ai-status-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: #FFFFFF; /* Fix: High contrast text */
  background: rgba(184,115,51,0.8); /* Fix: Brighter background */
  padding: 0.4rem 1.2rem;
  margin-bottom: 3rem;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 90% 100%, 0% 100%);
  text-shadow: 0 0 5px rgba(0,0,0,0.5);
}

.ai-card-title {
  font-size: 3.6rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.ai-card-title i { 
  color: var(--accent); 
  font-size: 2.8rem; 
  opacity: 1; /* More visible */
  filter: drop-shadow(0 0 8px rgba(184,115,51,0.4));
}

.ai-card-desc {
  font-size: 1.6rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.7); /* Fix: Brighter description */
  margin-bottom: 4rem;
}

/* Console Sidebar */
.ai-console-side {
  border-left: 1px solid rgba(184,115,51,0.1);
  padding-left: 3rem;
  text-align: left;
}

.ai-tech-block {
  margin-bottom: 3rem;
}

.ai-tech-label {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: rgba(184,115,51,0.7); /* Brighter label */
  margin-bottom: 0.4rem;
  display: block;
}

.ai-tech-value {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: #FFFFFF;
  text-shadow: 0 0 5px rgba(255,255,255,0.3);
}

.ai-console-btn {
  display: block;
  margin-top: 4rem;
  font-family: var(--mono);
  font-size: 1.2rem;
  color: #FFFFFF;
  background: transparent;
  border: 1px solid rgba(184,115,51,0.4);
  padding: 1.6rem 3.2rem;
  text-align: center;
  transition: all 0.3s;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.ai-console-btn:hover {
  background: var(--accent);
  color: #FFFFFF; /* High contrast white on hover */
  border-color: var(--accent);
  box-shadow: 0 0 25px rgba(184,115,51,0.5);
}

/* Background Data Readouts */
.ai-readout {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: rgba(184,115,51,0.35); /* Brighter decorative text */
  pointer-events: none;
  z-index: 2;
}

@media (max-width: 900px) {
  .ai-console-body { grid-template-columns: 1fr; gap: 4rem; }
  .ai-console-side { border-left: none; padding-left: 0; border-top: 1px solid rgba(184,115,51,0.1); padding-top: 3rem; }
  #ai-explorations .section-title { font-size: 3rem; }
}
@media (max-width: 600px) {
  .ai-console-body { padding: 3rem 2rem; }
  .ai-card-title { font-size: 2.8rem; }
}