:root {
  --mint: #1fffa9;
  --red: #e43f45;
  --blue: #0974ff;
  --white: #ffffff;
  --black: #000000;
  --bg: #050505;
  --surface: #0d0d0d;
  --surface-elevated: #121212;
  --text-muted: #a8a8a8;
  --text-soft: #cccccc;
  --border: rgba(255, 255, 255, 0.08);
  --mint-rgb: 31, 255, 169;
  --blue-rgb: 9, 116, 255;
  --red-rgb: 228, 63, 69;
  --header-h: 4rem;
  --radius: 14px;
  --transition: 0.25s ease;
  font-family: "DM Sans", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--white);
  line-height: 1.6;
  font-family: "DM Sans", system-ui, sans-serif;
  background-image:
    radial-gradient(
      ellipse 80% 60% at 50% -20%,
      rgba(var(--blue-rgb), 0.18),
      transparent 55%
    ),
    radial-gradient(
      circle at 0% 50%,
      rgba(var(--mint-rgb), 0.08),
      transparent 45%
    ),
    radial-gradient(
      circle at 100% 80%,
      rgba(var(--red-rgb), 0.06),
      transparent 40%
    );
  background-attachment: fixed;
}

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

a:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.container {
  width: min(90%, 1100px);
  margin-inline: auto;
  padding-block: 3.5rem;
}

/* —— Header —— */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: clamp(1rem, 4vw, 2rem);
  background: rgba(5, 5, 5, 0.75);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 3vw, 1.5rem);
  font-size: 0.875rem;
  font-weight: 500;
}

.site-nav a:not(.nav-cta) {
  color: var(--text-soft);
  transition: color var(--transition);
}

.site-nav a:not(.nav-cta):hover {
  color: var(--white);
}

.nav-cta {
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--mint), var(--blue));
  color: var(--black);
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(var(--mint-rgb), 0.35);
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    height: auto;
    padding-block: 0.75rem;
    gap: 0.75rem;
  }

  .site-nav {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* —— Hero —— */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--header-h);
  padding-inline: 1rem;
  padding-bottom: 3rem;
}

.hero .container {
  padding-block: 0;
}

.hero-inner {
  padding-block: 2rem 0;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--mint);
  margin-bottom: 1rem;
}

.section-eyebrow {
  margin-bottom: 0.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(
    105deg,
    var(--white) 30%,
    var(--mint) 55%,
    var(--blue) 85%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 36rem;
  margin: 1.25rem auto 2rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: var(--mint);
  color: var(--black);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(var(--mint-rgb), 0.35);
}

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

.btn-secondary:hover {
  border-color: rgba(var(--blue-rgb), 0.5);
  color: var(--blue);
  box-shadow: 0 0 20px rgba(var(--blue-rgb), 0.15);
  transform: translateY(-2px);
}

/* —— Sections —— */
.section-block {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-lead,
.section-intro {
  color: var(--text-muted);
  max-width: 42rem;
  font-size: 1.05rem;
}

.section-intro {
  margin-bottom: 2rem;
}

.about .container,
.projects .container,
.skills .container,
.contact .container {
  padding-block: 3rem;
}

/* —— Cards / grid —— */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--mint-rgb), 0.25);
  box-shadow:
    0 16px 40px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(var(--mint-rgb), 0.12);
}

.card-media {
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}

.card-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.35rem 1.35rem;
}

.card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.card-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.card-link {
  display: inline-block;
  margin-top: auto;
  padding-top: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue);
  transition: color var(--transition);
}

.card-link:hover {
  color: var(--mint);
}

/* —— Skills —— */
.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.skills-list span {
  padding: 0.6rem 1rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  transition: border-color var(--transition), color var(--transition);
}

.skills-list span:nth-child(odd):hover {
  border-color: rgba(var(--mint-rgb), 0.45);
  color: var(--mint);
}

.skills-list span:nth-child(even):hover {
  border-color: rgba(var(--blue-rgb), 0.45);
  color: var(--blue);
}

/* —— Contact —— */
.contact-card {
  position: relative;
  max-width: 32rem;
  padding: 1.75rem 2rem 1.75rem 2rem;
  background: var(--surface-elevated);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.contact-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--mint), var(--blue));
}

.contact-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.contact-handle {
  color: var(--white);
  display: block;
  margin-top: 0.35rem;
  font-size: 1.125rem;
}

.contact-secondary {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--mint);
}

.contact-secondary:hover {
  text-decoration: underline;
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 1.5rem;
  margin-top: 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding-block: 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-inner a {
  color: var(--text-soft);
  transition: color var(--transition);
}

.footer-inner a:hover {
  color: var(--mint);
}

.footer-dot {
  opacity: 0.4;
}