@import url("https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700;800&display=swap");

:root,
[data-theme="dark"] {
  --bg: #07111f;
  --bg-accent: rgba(34, 211, 238, 0.12);
  --surface: #0d1a2d;
  --surface-alt: #101f35;
  --card: rgba(15, 27, 46, 0.88);
  --text: #edf4ff;
  --muted: #9fb1c8;
  --accent: #67e8f9;
  --accent-strong: #22d3ee;
  --border: rgba(255, 255, 255, 0.08);
  --header-bg: rgba(7, 17, 31, 0.82);
  --shadow: 0 24px 50px rgba(0, 0, 0, 0.28);
}

[data-theme="light"] {
  --bg: #f3f8ff;
  --bg-accent: rgba(14, 165, 233, 0.14);
  --surface: #ffffff;
  --surface-alt: #e8f1fc;
  --card: rgba(255, 255, 255, 0.92);
  --text: #162033;
  --muted: #54657f;
  --accent: #0284c7;
  --accent-strong: #0369a1;
  --border: rgba(2, 8, 23, 0.08);
  --header-bg: rgba(243, 248, 255, 0.84);
  --shadow: 0 22px 45px rgba(15, 23, 42, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Open Sans", sans-serif;
  background:
    radial-gradient(circle at top right, var(--bg-accent), transparent 28%),
    radial-gradient(circle at left center, rgba(103, 232, 249, 0.08), transparent 32%),
    var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body.no-scroll {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 6rem 0;
  scroll-margin-top: 5.5rem;
}

.about,
.projects,
.contact {
  background: transparent;
}

.skills,
.edge,
.education {
  background-color: var(--surface-alt);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

.section-heading h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-description {
  color: var(--muted);
  max-width: 680px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #08111f;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  box-shadow: 0 14px 28px rgba(34, 211, 238, 0.2);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 5rem;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
  font-weight: 800;
}

.logo-ajay {
  color: var(--text);
  font-size: 1.25rem;
  text-transform: lowercase;
}

.logo-tech {
  color: var(--accent);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-weight: 600;
  transition: color 0.2s ease;
}

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

.theme-toggle,
.theme-toggle-mobile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.theme-toggle {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
}

.theme-toggle-mobile {
  width: 100%;
  border-radius: 999px;
  min-height: 48px;
  padding: 0.8rem 1rem;
  justify-content: center;
}

.theme-toggle:hover,
.theme-toggle-mobile:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  width: 2.8rem;
  height: 2.8rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.hamburger span {
  width: 1.1rem;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 5rem;
  right: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: min(22rem, calc(100% - 2rem));
  padding: 1.2rem;
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: var(--surface);
  box-shadow: var(--shadow);
  z-index: 1002;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.mobile-menu a {
  color: var(--text);
  font-weight: 600;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 17, 31, 0.55);
  z-index: 1001;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.hero {
  padding-top: 4rem;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3rem;
}

.hero-content h1 {
  font-size: clamp(2.8rem, 6vw, 4.9rem);
  line-height: 1.02;
  max-width: 11ch;
  margin-bottom: 1.25rem;
}

.hero-copy {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.hero-highlights {
  display: grid;
  gap: 0.85rem;
  list-style: none;
  max-width: 42rem;
}

.hero-highlights li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--muted);
}

.hero-highlights li::before {
  content: "";
  position: absolute;
  top: 0.7rem;
  left: 0;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}

.hero-image {
  position: relative;
}

.hero-image::before {
  content: "";
  position: absolute;
  inset: auto 10% -8% -8%;
  height: 90%;
  border-radius: 1.75rem;
  background: linear-gradient(135deg, rgba(103, 232, 249, 0.18), rgba(2, 132, 199, 0.08));
  filter: blur(6px);
}

.hero-image img {
  position: relative;
  width: min(420px, 100%);
  margin-left: auto;
  border-radius: 1.75rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.about-shell,
.education-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.about-card,
.skill-group,
.education-card,
.edge-card,
.project-card,
.contact-panel {
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  background: var(--card);
  box-shadow: var(--shadow);
}

.about-card,
.skill-group,
.education-card {
  padding: 1.6rem;
}

.about-card h3,
.skill-group-label,
.education-card h3,
.contact-copy h3 {
  font-size: 1.2rem;
  margin-bottom: 0.9rem;
}

.about-card p + p,
.contact-copy p {
  margin-top: 1rem;
}

.about-shell {
  align-items: start;
}

.about-card-primary {
  min-height: 100%;
}

.about-side {
  display: grid;
  gap: 1.5rem;
}

.detail-list {
  display: grid;
  gap: 0.9rem;
  list-style: none;
}

.detail-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--muted);
}

.detail-list li::before {
  content: "";
  position: absolute;
  top: 0.72rem;
  left: 0;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
}

.skills-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.skill-group-label {
  color: var(--text);
  font-weight: 700;
}

.skill-group-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
}

.skill-group-list li {
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: rgba(103, 232, 249, 0.12);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
}

.education-card p,
.about-card p {
  color: var(--muted);
}

.edge-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.edge-card {
  padding: 1.5rem;
}

.edge-card p {
  color: var(--text);
  font-size: 1rem;
}

.projects-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card.is-hidden {
  display: none;
}

.project-card {
  overflow: hidden;
}

.project-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-info {
  padding: 1.5rem;
}

.project-status,
.education-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-info h3 {
  font-size: 1.25rem;
  margin-bottom: 0.7rem;
}

.project-info p {
  color: var(--muted);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.1rem 0 1.3rem;
}

.project-tag {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(103, 232, 249, 0.12);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.project-btn {
  flex: 1 1 10rem;
}

.education-org {
  color: var(--text) !important;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.section-action {
  margin-top: 2rem;
}

.projects-action {
  display: flex;
  justify-content: center;
}

.contact-panel {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 1.5rem;
  padding: 1.6rem;
}

.contact-copy p {
  color: var(--muted);
}

.contact-focus-list {
  margin-top: 0.5rem;
}

.contact-links {
  display: grid;
  gap: 0.85rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 3.75rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.contact-method:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.contact-method i {
  color: var(--accent);
  font-size: 1rem;
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-game {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.6rem;
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  background: var(--card);
  box-shadow: var(--shadow);
}

.footer-game-copy h2 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.15;
  margin-bottom: 0.9rem;
}

.footer-game-intro,
.footer-game-status {
  color: var(--muted);
}

.game-token-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.7rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: rgba(103, 232, 249, 0.16);
  color: var(--accent);
  font-weight: 700;
}

.footer-game-message {
  min-height: 3.5rem;
  margin: 1rem 0 1.25rem;
  padding: 0.9rem 1rem;
  border-radius: 1rem;
  background: rgba(103, 232, 249, 0.08);
  color: var(--text);
  font-weight: 600;
}

.tic-tac-toe {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  align-self: start;
}

.game-cell {
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
  font-size: clamp(1.8rem, 6vw, 2.5rem);
  font-weight: 800;
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.game-cell:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: rgba(103, 232, 249, 0.08);
}

.game-cell:disabled {
  cursor: default;
  opacity: 1;
}

.game-cell.player-x {
  color: var(--accent);
}

.game-cell.player-o {
  color: #f59e0b;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
}

.footer-content p {
  color: var(--muted);
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.social-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

@media (max-width: 960px) {
  .hero-container,
  .contact-panel,
  .about-shell,
  .edge-grid,
  .education-grid,
  .projects-container {
    grid-template-columns: 1fr;
  }

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

  .footer-game {
    grid-template-columns: 1fr;
  }

  .hero-image img {
    margin: 0;
  }
}

@media (max-width: 780px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: inline-flex;
  }

  .hero {
    padding-top: 2rem;
  }

  .hero-content h1 {
    max-width: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn,
  .project-btn {
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 4.5rem 0;
  }

  .container {
    width: min(100% - 1.25rem, 1120px);
  }

  .project-links {
    flex-direction: column;
  }

  .tic-tac-toe {
    gap: 0.55rem;
  }

  .game-cell {
    border-radius: 0.85rem;
  }
}