:root {
  --bg-primary: #050816;
  --bg-secondary: #0c1330;
  --surface: rgba(13, 21, 48, 0.55);
  --surface-strong: rgba(16, 24, 56, 0.82);
  --border: rgba(255, 255, 255, 0.09);
  --text-primary: #f5f7ff;
  --text-secondary: #b4bfdc;
  --accent: #7c6cff;
  --accent-bright: #28d7ff;
  --accent-soft: #ff4fd8;
  --success: #71f6b5;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
}

/* Base layout and theme */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Inter", sans-serif;
  color: var(--text-primary);
  background:
    radial-gradient(circle at top left, rgba(124, 108, 255, 0.22), transparent 32%),
    radial-gradient(circle at 80% 20%, rgba(40, 215, 255, 0.18), transparent 24%),
    radial-gradient(circle at bottom right, rgba(255, 79, 216, 0.14), transparent 22%),
    linear-gradient(135deg, #03050f 0%, #071126 35%, #050816 100%);
  overflow-x: hidden;
  opacity: 0;
  animation: page-enter 0.9s ease forwards;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  background: none;
  cursor: pointer;
}

#particle-canvas,
.page-overlay,
.hero-gradient {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#particle-canvas {
  z-index: -3;
}

.page-overlay {
  z-index: -2;
  background:
    linear-gradient(110deg, rgba(255, 255, 255, 0.02), transparent 30%),
    radial-gradient(circle at center, transparent 45%, rgba(3, 5, 15, 0.42));
}

.hero-gradient {
  position: absolute;
  z-index: -1;
  background: linear-gradient(120deg, rgba(124, 108, 255, 0.2), rgba(40, 215, 255, 0.16), rgba(255, 79, 216, 0.16));
  background-size: 200% 200%;
  filter: blur(18px);
  animation: gradient-flow 12s ease-in-out infinite;
}

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

.section {
  position: relative;
  padding: 6.5rem 0;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.08;
}

.section-tag,
.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--accent-bright);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.glass-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: linear-gradient(180deg, rgba(4, 7, 18, 0.92), rgba(4, 7, 18, 0.4), transparent);
  transition: padding 0.3s ease, background 0.3s ease;
}

/* Navigation */
.site-header.scrolled {
  padding: 0.75rem 0;
  background: rgba(4, 7, 18, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.navbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  background: rgba(10, 16, 36, 0.45);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-bright));
  color: #02050f;
  box-shadow: 0 0 28px rgba(40, 215, 255, 0.35);
}

.brand-text {
  letter-spacing: 0.01em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-menu a {
  position: relative;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  padding: 0.75rem;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 0.28rem 0;
  background: var(--text-primary);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 8rem;
}

/* Hero section */
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(3rem, 7vw, 5.9rem);
  line-height: 0.96;
}

.hero-copy h2 {
  margin: 1rem 0 1.25rem;
  font-size: clamp(1.4rem, 3vw, 2.3rem);
  line-height: 1.18;
  color: transparent;
  background: linear-gradient(90deg, #ffffff, #c5ccff, #7aeaff);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-description {
  max-width: 640px;
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.hero-actions,
.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-actions {
  margin-top: 2rem;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3.3rem;
  padding: 0.95rem 1.45rem;
  border-radius: 999px;
  font-weight: 600;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: translateX(-120%);
  transition: transform 0.5s ease;
}

.btn:hover::before {
  transform: translateX(120%);
}

.btn:hover {
  transform: translateY(-3px);
}

.btn-primary {
  color: #02050f;
  background: linear-gradient(135deg, var(--accent-bright), #8ea9ff 45%, var(--accent-soft));
  box-shadow: 0 0 32px rgba(124, 108, 255, 0.32);
}

.btn-secondary,
.btn-ghost {
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.btn-secondary:hover,
.btn-ghost:hover {
  box-shadow: 0 0 28px rgba(40, 215, 255, 0.18);
  border-color: rgba(40, 215, 255, 0.38);
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.metric {
  min-width: 180px;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
}

.metric-value {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.metric-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 520px;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  animation: spin 18s linear infinite;
}

.orbit::before {
  content: "";
  position: absolute;
  top: 18%;
  left: 10%;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent));
  box-shadow: 0 0 18px rgba(40, 215, 255, 0.7);
}

.orbit-one {
  width: 21rem;
  height: 21rem;
}

.orbit-two {
  width: 27rem;
  height: 27rem;
  animation-direction: reverse;
  animation-duration: 24s;
}

.profile-card {
  position: relative;
  width: min(100%, 410px);
  padding: 1.5rem;
  border-radius: 2rem;
  overflow: hidden;
}

.profile-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% -10%;
  height: 12rem;
  background: radial-gradient(circle, rgba(40, 215, 255, 0.18), transparent 60%);
}

.profile-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: rgba(113, 246, 181, 0.12);
  color: #bcffd9;
  font-size: 0.82rem;
  font-weight: 600;
}

.profile-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1.08;
  margin: 1.3rem 0;
  border-radius: 1.6rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(180deg, rgba(124, 108, 255, 0.24), rgba(40, 215, 255, 0.1)),
    rgba(8, 12, 28, 0.6);
  box-shadow: inset 0 0 50px rgba(255, 255, 255, 0.04), 0 0 36px rgba(124, 108, 255, 0.14);
  animation: float 5s ease-in-out infinite;
}

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

.profile-info {
  position: relative;
  z-index: 1;
}

.profile-role {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.profile-focus {
  margin: 0.55rem 0 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-card,
.contact-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.5rem;
}

/* Content grids */
.about-card {
  padding: 1.6rem;
  border-radius: var(--radius-lg);
}

.about-copy {
  padding: 0.8rem;
}

.about-copy p,
.project-card p,
.contact-panel p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.8;
}

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

.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.info-card,
.skill-card,
.project-card,
.contact-panel,
.contact-form {
  border-radius: var(--radius-md);
}

.info-card {
  padding: 1.3rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.info-card:hover,
.skill-card:hover,
.project-card:hover,
.contact-link:hover {
  transform: translateY(-6px);
}

.info-card:hover,
.skill-card:hover,
.project-card:hover {
  border-color: rgba(40, 215, 255, 0.26);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.22), 0 0 24px rgba(40, 215, 255, 0.08);
}

.info-card h3,
.skill-card h3,
.project-card h3,
.contact-panel h3 {
  margin: 0 0 0.65rem;
}

.info-card p,
.skill-card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

.icon-box,
.skill-icon {
  display: inline-grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(124, 108, 255, 0.18), rgba(40, 215, 255, 0.14));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.05);
}

.icon-box svg,
.skill-icon svg,
.scroll-top svg {
  width: 1.4rem;
  height: 1.4rem;
  fill: currentColor;
}

.skills-grid,
.projects-grid {
  display: grid;
  gap: 1.35rem;
}

.skills-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.skill-card {
  padding: 1.4rem;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.skill-meter {
  height: 0.6rem;
  margin-top: 1.1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.skill-meter span {
  display: block;
  height: 100%;
  width: var(--level);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  box-shadow: 0 0 18px rgba(40, 215, 255, 0.55);
  animation: pulse-bar 3.5s ease-in-out infinite;
}

.projects-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.project-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  padding: 1.5rem;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.project-top,
.project-bottom {
  display: grid;
  gap: 1rem;
}

.project-chip {
  display: inline-flex;
  width: fit-content;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #cffcff;
  background: rgba(40, 215, 255, 0.12);
  border: 1px solid rgba(40, 215, 255, 0.2);
}

.stack {
  font-size: 0.95rem;
}

.contact-panel,
.contact-form {
  padding: 1.5rem;
}

.contact-links {
  display: grid;
  gap: 0.95rem;
  margin-top: 1.4rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.contact-link:hover {
  border-color: rgba(124, 108, 255, 0.3);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.18);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.55rem;
}

.contact-form span {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem 1rem 1.05rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(180, 191, 220, 0.75);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(40, 215, 255, 0.36);
  box-shadow: 0 0 0 4px rgba(40, 215, 255, 0.08);
  transform: translateY(-1px);
}

.send-button {
  justify-self: start;
  min-width: 180px;
}

.send-button.is-sending {
  opacity: 0.75;
  cursor: wait;
}

.site-footer {
  padding: 1.6rem 0 2.2rem;
  color: rgba(180, 191, 220, 0.8);
  text-align: center;
}

/* Utility interactions */
.scroll-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 990;
  display: grid;
  place-items: center;
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
  color: var(--text-primary);
  background: rgba(10, 16, 36, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 30px rgba(124, 108, 255, 0.18);
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 1200;
  transform: translate(-50%, 150%);
  padding: 0.95rem 1.2rem;
  border-radius: 999px;
  background: rgba(10, 16, 36, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  color: var(--text-primary);
  transition: transform 0.35s ease, opacity 0.35s ease;
  opacity: 0;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Motion — visible by default; hidden only when JS is active */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

html.js [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@keyframes gradient-flow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse-bar {
  0%,
  100% {
    filter: saturate(1);
  }
  50% {
    filter: saturate(1.25);
  }
}

@keyframes page-enter {
  to {
    opacity: 1;
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .about-card,
  .contact-layout,
  .skills-grid,
  .projects-grid,
  .about-highlights {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid {
    align-items: start;
  }
}

@media (max-width: 860px) {
  .section {
    padding: 5.25rem 0;
  }

  .navbar {
    border-radius: 1.5rem;
  }

  .nav-toggle {
    display: block;
    position: relative;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

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

  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.8rem);
    left: 0;
    right: 0;
    display: grid;
    gap: 0.3rem;
    padding: 1rem;
    border-radius: 1.5rem;
    background: rgba(8, 12, 30, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
  }

  .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-menu a {
    padding: 0.8rem 0.6rem;
    border-radius: 0.9rem;
  }

  .nav-menu a:hover {
    background: rgba(255, 255, 255, 0.04);
  }

  .hero-grid,
  .about-card,
  .contact-layout,
  .skills-grid,
  .projects-grid,
  .about-highlights {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 7rem;
  }

  .hero-visual {
    min-height: 420px;
  }

  .orbit-one {
    width: 17rem;
    height: 17rem;
  }

  .orbit-two {
    width: 21rem;
    height: 21rem;
  }
}

@media (max-width: 580px) {
  .container {
    width: min(calc(100% - 1.2rem), var(--container));
  }

  .site-header {
    padding: 0.8rem 0;
  }

  .navbar {
    padding: 0.8rem 1rem;
  }

  .brand-text {
    display: none;
  }

  .section-heading {
    margin-bottom: 1.8rem;
  }

  .hero-copy h1 {
    font-size: clamp(2.6rem, 15vw, 4rem);
  }

  .hero-copy h2 {
    font-size: 1.22rem;
  }

  .hero-description,
  .about-copy p,
  .project-card p,
  .contact-panel p {
    font-size: 0.98rem;
  }

  .hero-actions,
  .project-actions {
    flex-direction: column;
  }

  .btn,
  .send-button {
    width: 100%;
  }

  .hero-metrics {
    display: grid;
    grid-template-columns: 1fr;
  }

  .profile-card,
  .about-card,
  .contact-panel,
  .contact-form,
  .project-card,
  .skill-card {
    padding: 1.2rem;
  }

  .scroll-top {
    right: 0.9rem;
    bottom: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}