:root {
  --color-bg: #0f172a;
  --color-surface: rgba(15, 23, 42, 0.25);
  --color-surface-solid: #16213d;
  --color-primary: #5b8def;
  --color-primary-dark: #416ad4;
  --color-primary-light: rgba(91, 141, 239, 0.15);
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --shadow-lg: 0 32px 80px rgba(15, 23, 42, 0.35);
  --shadow-md: 0 20px 45px rgba(15, 23, 42, 0.3);
  --container-max: 1100px;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: radial-gradient(circle at top right, rgba(91, 141, 239, 0.2), transparent 55%),
    radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.2), transparent 55%), var(--color-bg);
  color: var(--color-text);
  font-family: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(15, 23, 42, 0.6);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand__badge {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(91, 141, 239, 0.12);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1rem;
}

.brand__text {
  font-size: 1rem;
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.2rem;
}

.nav-toggle__bar {
  width: 26px;
  height: 2px;
  background: var(--color-text);
  display: block;
  margin-block: 6px;
  transform-origin: center;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.primary-navigation {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.primary-navigation ul {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.primary-navigation a {
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.primary-navigation a:hover,
.primary-navigation a:focus-visible {
  color: var(--color-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: 0;
  text-align: center;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #0f172a;
  box-shadow: 0 12px 35px rgba(91, 141, 239, 0.4);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 45px rgba(91, 141, 239, 0.35);
}

.btn--ghost {
  background: rgba(148, 163, 184, 0.12);
  color: var(--color-text);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.btn--ghost:hover {
  background: rgba(148, 163, 184, 0.2);
}

.btn--light {
  background: rgba(226, 232, 240, 0.15);
  color: var(--color-text);
  border: 1px solid rgba(226, 232, 240, 0.25);
}

.hero {
  padding-block: clamp(6rem, 10vw, 8rem);
}

.hero .container {
  display: grid;
  gap: 3rem;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hero__content .tag,
.section-heading .tag,
.contact__intro .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(91, 141, 239, 0.12);
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 3.6rem);
  line-height: 1.1;
  margin-bottom: 1rem;
}

.accent {
  color: var(--color-accent);
}

.hero p {
  max-width: 520px;
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-block: 2rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.hero__stats dt {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero__stats dd {
  margin: 0.35rem 0 0;
  color: var(--color-text-muted);
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__card {
  position: relative;
  padding: 3rem 2.5rem;
  border-radius: 26px;
  background: rgba(15, 23, 42, 0.55);
  box-shadow: var(--shadow-lg);
  max-width: 320px;
  text-align: center;
}

.hero__avatar {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.8), rgba(56, 189, 248, 0.85));
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 2rem;
  margin: 0 auto 2rem;
  color: #0f172a;
}

.hero__card p {
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 1.5rem;
}

.signature {
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
}

section {
  padding-block: clamp(4rem, 8vw, 6rem);
  scroll-margin-top: 96px;
}

.section-heading {
  max-width: 620px;
  margin-bottom: 3rem;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin-bottom: 0.75rem;
}

.section-heading p {
  margin: 0;
  color: var(--color-text-muted);
}

.about__grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.about__grid article {
  padding: 1.75rem;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgba(91, 141, 239, 0.15);
  box-shadow: var(--shadow-md);
}

.about__grid h3 {
  margin-top: 0;
}

.skills {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.95));
}

.skills__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.skill-card {
  padding: 1.75rem;
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(91, 141, 239, 0.18);
  color: var(--color-text-muted);
  transition: transform 0.3s ease, border 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-6px);
  border-color: rgba(91, 141, 239, 0.4);
  color: var(--color-text);
}

.skill-card h3 {
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.projects__grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.project-card {
  padding: 2rem;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.15);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-md);
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.project-card__tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(91, 141, 239, 0.16);
  color: var(--color-primary);
  font-weight: 600;
}

.project-card h3 {
  margin: 0.5rem 0;
  font-size: 1.4rem;
}

.project-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-muted);
}

.cta {
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.2), rgba(56, 189, 248, 0.35));
  border-block: 1px solid rgba(91, 141, 239, 0.25);
}

.cta .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 4vw, 2.6rem);
}

.cta p {
  margin: 0;
  color: var(--color-bg);
  font-weight: 500;
}

.testimonials .section-heading {
  margin-inline: auto;
  text-align: center;
}

.testimonials__grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.testimonials figure {
  margin: 0;
  padding: 2.5rem 2rem;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(91, 141, 239, 0.2);
  box-shadow: var(--shadow-md);
  color: var(--color-text-muted);
}

.testimonials blockquote {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--color-text);
}

.contact .container {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: start;
}

.contact__intro h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin-bottom: 0.5rem;
}

.contact__intro p {
  color: var(--color-text-muted);
}

.contact__details {
  display: grid;
  gap: 0.5rem;
  margin-top: 1.5rem;
  color: var(--color-text);
}

.contact__form {
  display: grid;
  gap: 1.25rem;
  padding: 2rem;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(91, 141, 239, 0.2);
  box-shadow: var(--shadow-md);
}

.form-group {
  display: grid;
  gap: 0.5rem;
}

.form-group--full {
  grid-column: 1 / -1;
}

.contact__form label {
  font-weight: 600;
  color: var(--color-text);
}

.contact__form input,
.contact__form textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.35);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border 0.2s ease, background 0.2s ease;
}

.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: rgba(91, 141, 239, 0.7);
  background: rgba(15, 23, 42, 0.45);
}

.contact__form textarea {
  resize: vertical;
}

.form-disclaimer {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.site-footer {
  padding-block: 2.5rem;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
  background: rgba(15, 23, 42, 0.75);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--color-text-muted);
}

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

.footer__links a {
  color: var(--color-text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

@media (max-width: 960px) {
  .primary-navigation {
    position: fixed;
    inset: 80px 1rem auto 1rem;
    background: rgba(15, 23, 42, 0.95);
    border-radius: 22px;
    padding: 1.5rem;
    display: grid;
    gap: 1.5rem;
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .primary-navigation[data-open="true"] {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
  }

  .primary-navigation ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
  }

  .hero .container {
    text-align: center;
  }

  .hero p {
    margin-inline: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__card {
    margin-inline: auto;
  }

  .contact .container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header .container {
    padding-block: 0.75rem;
  }

  .brand__badge {
    width: 40px;
    height: 40px;
    font-size: 0.95rem;
  }

  .primary-navigation {
    inset: 70px 1rem auto 1rem;
  }

  .hero__stats {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .contact__form {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 1rem, var(--container-max));
  }

  body {
    font-size: 0.95rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero__card {
    padding: 2.2rem 1.75rem;
  }

  .hero__stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cta .container {
    align-items: stretch;
  }

  .cta .btn {
    width: 100%;
  }

  .projects__grid,
  .testimonials__grid {
    gap: 1.5rem;
  }

  .contact__form {
    padding: 1.25rem;
  }

  .footer__links {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }
}