/* ============================================
   ADARSH ABHINAV — PORTFOLIO DESIGN SYSTEM
   Industrial-Futurist Aesthetic
   ============================================ */

/* ---------- CSS VARIABLES ---------- */
:root {
  /* Colors */
  --color-base: #0d1117;
  --color-surface: #161b22;
  --color-surface-elevated: #1f2937;
  --color-accent: #00ffc8;
  --color-accent-glow: rgba(0, 255, 200, 0.4);
  --color-secondary: #ff6b35;
  --color-secondary-glow: rgba(255, 107, 53, 0.35);
  --color-text-primary: #f0f6fc;
  --color-text-secondary: #8b949e;
  --color-text-muted: #484f58;
  --color-border: #30363d;

  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', 'Source Code Pro', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-mono);
  background-color: var(--color-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  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='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.035;
  pointer-events: none;
  z-index: 1000;
}

/* ---------- TYPOGRAPHY ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
}

h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
}

h2 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  max-width: 65ch;
}

a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: #ffffff;
}

/* ---------- LAYOUT ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-2xl) 0;
  position: relative;
}

/* Section numbering */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), transparent);
  max-width: 100px;
}

.section-number {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* ---------- NAVIGATION ---------- */
.nav {
  position: fixed;
  bottom: var(--space-md);
  top: auto;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(22, 27, 34, 0.9);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: var(--space-xs) var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.95rem;
}

.nav-logo .status-dot {
  width: 8px;
  height: 8px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.6;
    transform: scale(0.9);
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-link {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  background: #ffffff;
  color: var(--color-base) !important;
  font-weight: 600;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
  margin-left: var(--space-xs);
  transition: var(--transition-base);
}

.nav-cta:hover {
  background: #e5e5e5;
  transform: translateY(-2px);
}

/* Mobile menu button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  padding: var(--space-xs);
  cursor: pointer;
}

/* ---------- HERO SECTION ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Gradient orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.6;
  animation: float 15s ease-in-out infinite;
}

.hero-orb--cyan {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.hero-orb--orange {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  25% {
    transform: translate(30px, -20px) scale(1.05);
  }

  50% {
    transform: translate(-20px, 20px) scale(0.95);
  }

  75% {
    transform: translate(20px, 30px) scale(1.02);
  }
}

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

.hero-greeting {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: #ffffff;
  margin-bottom: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 600;
}

.hero-name {
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.hero-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-family: var(--font-display);
  margin-bottom: var(--space-lg);
}

.hero-title-static {
  color: var(--color-text-secondary);
}

/* Hero roles - horizontal layout */
.hero-roles {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  margin-bottom: var(--space-lg);
}

.hero-role {
  color: var(--color-text-secondary);
}

.hero-divider {
  color: var(--color-text-muted);
}

.hero-title-dynamic {
  color: #ffffff;
  position: relative;
  min-width: 280px;
  text-align: left;
}

.hero-title-dynamic::after {
  content: '|';
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.hero-meta-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-text-secondary);
}

.hero-cta-group {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: #ffffff;
  color: var(--color-base);
}

.btn-primary:hover {
  transform: translateY(-3px);
  background: #e5e5e5;
  color: var(--color-base);
}

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

.btn-secondary:hover {
  border-color: #ffffff;
  color: #ffffff;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 8rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

/* ---------- ABOUT SECTION ---------- */
.about {
  background: var(--color-surface);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-text h2 {
  margin-bottom: var(--space-md);
}

.about-text p {
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.stat-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  transition: var(--transition-base);
}

.stat-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ---------- EXPERIENCE SECTION ---------- */
.experience-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.experience-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-lg);
  transition: var(--transition-base);
}

.experience-card:hover {
  border-color: rgba(240, 246, 252, 0.15);
  background: var(--color-surface-elevated);
}

.experience-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.experience-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-primary);
}

.experience-location {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.experience-content h3 {
  margin-bottom: var(--space-xs);
}

.experience-company {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.experience-description {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- PROJECTS SECTION ---------- */
.projects {
  background: var(--color-surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
}

.project-card:hover {
  border-color: rgba(240, 246, 252, 0.15);
  background: var(--color-surface-elevated);
}

.project-header {
  padding: var(--space-lg);
  position: relative;
  z-index: 1;
}

.project-header h3 {
  margin-bottom: var(--space-xs);
}

.project-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.project-description {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag {
  font-size: 0.75rem;
  padding: 4px 12px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.tag:hover {
  border-color: #ffffff;
  color: #ffffff;
}

/* ---------- SKILLS SECTION ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: var(--transition-base);
}

.skill-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.skill-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.skill-level {
  display: flex;
  gap: 4px;
}

.skill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
}

.skill-dot.active {
  background: #ffffff;
}

.skill-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.keyword {
  font-size: 0.8rem;
  padding: 4px 10px;
  background: var(--color-base);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

/* ---------- CERTIFICATIONS ---------- */
.certifications {
  background: var(--color-surface);
}

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

.cert-card {
  background: var(--color-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  transition: var(--transition-base);
}

.cert-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.cert-icon {
  width: 40px;
  height: 40px;
  background: #ffffff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cert-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-base);
}

.cert-info h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

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

.cert-date {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ---------- CONTACT SECTION ---------- */
.contact {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact-orb {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.contact-orb--1 {
  background: var(--color-accent);
  top: -200px;
  left: -200px;
}

.contact-orb--2 {
  background: var(--color-secondary);
  bottom: -200px;
  right: -200px;
}

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

.contact h2 {
  margin-bottom: var(--space-sm);
}

.contact-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  margin-left: auto;
  margin-right: auto;
}

.contact-methods {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: var(--transition-base);
}

.contact-method:hover {
  border-color: #ffffff;
  color: #ffffff;
}

.contact-method svg {
  width: 18px;
  height: 18px;
}

/* ---------- FOOTER ---------- */
.footer {
  padding: var(--space-lg) 0;
  padding-bottom: calc(var(--space-lg) + 80px);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

.footer-text span {
  color: #ff6b6b;
}

/* ---------- REVEAL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 100ms;
}

.reveal-delay-2 {
  transition-delay: 200ms;
}

.reveal-delay-3 {
  transition-delay: 300ms;
}

.reveal-delay-4 {
  transition-delay: 400ms;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr;
  }

  .experience-card {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav {
    width: auto;
    max-width: calc(100% - 2rem);
    padding: var(--space-xs) var(--space-sm);
    gap: 6px;
  }

  .nav-links {
    display: flex;
    gap: 6px;
  }

  .nav-link {
    padding: var(--space-xs) 6px;
    font-size: 0.65rem;
  }

  .nav-toggle {
    display: none;
  }

  .nav-cta {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.65rem;
    margin-left: 0;
  }

  .nav-logo {
    font-size: 0.7rem;
    padding: var(--space-xs);
    margin-right: 0;
  }

  .nav-logo-last {
    display: none;
  }

  .hero-roles {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .hero-divider {
    display: none;
  }

  .hero-title {
    flex-direction: column;
    text-align: center;
  }

  .hero-title-dynamic {
    text-align: center;
    min-width: auto;
  }

  .hero-meta {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: center;
  }

  .contact-methods {
    flex-direction: column;
    align-items: center;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .scroll-indicator {
    display: flex;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--space-sm);
  }

  section {
    padding: var(--space-xl) 0;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .experience-card {
    padding: var(--space-md);
  }

  .project-header {
    padding: var(--space-md);
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.75rem;
  }
}