/* ============ Design tokens ============ */
:root {
  --bg: #0b0f1a;
  --bg-alt: #11172a;
  --surface: #151c30;
  --surface-2: #1b2440;
  --border: rgba(255, 255, 255, 0.08);
  --text: #eaf0ff;
  --muted: #9aa6c4;
  --brand: #6c8bff;
  --brand-2: #a06bff;
  --accent: #34e0c0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --max: 1140px;
  --grad: linear-gradient(135deg, var(--brand), var(--brand-2));
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--grad);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 26px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), opacity 0.2s;
  box-shadow: 0 10px 30px -10px rgba(108, 139, 255, 0.7);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px rgba(108, 139, 255, 0.8); }
.btn:active { transform: translateY(0); }
.btn--ghost {
  background: transparent;
  border: 1px solid var(--border);
  box-shadow: none;
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--brand); box-shadow: none; }
.btn--sm { padding: 10px 18px; font-size: 0.875rem; }
.btn--full { width: 100%; }

/* ============ Navigation ============ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(11, 15, 26, 0.8);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo { font-weight: 800; font-size: 1.4rem; letter-spacing: -0.5px; }
.nav__logo span { color: var(--brand); }
.nav__menu { display: flex; align-items: center; gap: 8px; }
.nav__link {
  padding: 10px 14px;
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 8px;
  transition: color 0.2s;
}
.nav__link:hover, .nav__link.active { color: var(--text); }
.nav__cta { margin-left: 8px; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 150px 0 90px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -200px; right: -100px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(108,139,255,0.25), transparent 60%);
  filter: blur(20px);
  z-index: 0;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -250px; left: -150px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(160,107,255,0.18), transparent 60%);
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero__eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 22px;
}
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }

.hero__stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat { display: flex; flex-wrap: wrap; align-items: baseline; }
.stat__num { font-size: 2rem; font-weight: 800; }
.stat__plus { font-size: 1.5rem; font-weight: 800; color: var(--brand); }
.stat__label { width: 100%; color: var(--muted); font-size: 0.85rem; }

/* Hero visual */
.hero__visual { position: relative; }
.hero__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero__card--main { padding: 44px 22px 22px; position: relative; }
.hero__card--main .dot {
  position: absolute; top: 18px;
  width: 11px; height: 11px; border-radius: 50%;
}
.dot--red { left: 18px; background: #ff5f57; }
.dot--yellow { left: 36px; background: #febc2e; }
.dot--green { left: 54px; background: #28c840; }
.hero__card--main pre {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.92rem;
  color: #c8d3ff;
  white-space: pre-wrap;
}
.hero__card--main code { color: var(--accent); }
.hero__card--float {
  position: absolute;
  right: -14px; bottom: -26px;
  background: var(--grad);
  color: #fff;
  padding: 16px 22px;
  border-radius: var(--radius-sm);
  box-shadow: 0 16px 40px -12px rgba(160,107,255,0.7);
  animation: float 4s ease-in-out infinite;
}
.hero__card--float strong { display: block; font-size: 1.5rem; }
.hero__card--float span { font-size: 0.8rem; opacity: 0.9; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ============ Sections ============ */
.section { padding: 90px 0; }
.section--alt { background: var(--bg-alt); }
.section__head { max-width: 640px; margin: 0 auto 54px; text-align: center; }
.section__eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.section__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin: 10px 0 12px;
}
.section__lead { color: var(--muted); font-size: 1.05rem; }

/* ============ Grids & cards ============ */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.card:hover { transform: translateY(-6px); border-color: rgba(108,139,255,0.5); }

/* ============ About ============ */
.about {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}
.about__text p { color: var(--muted); margin-bottom: 18px; }
.about__list { margin-top: 22px; display: grid; gap: 12px; }
.about__list li { position: relative; padding-left: 30px; }
.about__list li::before {
  content: "\2713";
  position: absolute; left: 0;
  color: var(--accent);
  font-weight: 700;
}
.about__skills {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.about__skills h3 { margin-bottom: 18px; font-size: 1.1rem; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips span {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text);
}

/* ============ Services ============ */
.service__icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  font-size: 1.5rem;
  border-radius: 14px;
  background: var(--surface-2);
  color: var(--brand);
  margin-bottom: 20px;
}
.service h3 { font-size: 1.3rem; margin-bottom: 10px; }
.service > p { color: var(--muted); margin-bottom: 18px; }
.service ul { display: grid; gap: 10px; }
.service li { position: relative; padding-left: 22px; color: var(--muted); font-size: 0.95rem; }
.service li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
}

/* ============ Projects ============ */
.project { padding: 0; overflow: hidden; }
.project__media {
  height: 180px;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 16px;
}
.project__media--1 { background: linear-gradient(135deg, #6c8bff, #4a5cff); }
.project__media--2 { background: linear-gradient(135deg, #34e0c0, #1f9e87); }
.project__media--3 { background: linear-gradient(135deg, #a06bff, #6c3bff); }
.project__media--4 { background: linear-gradient(135deg, #ff8f6b, #ff5f57); }
.project__tag {
  background: rgba(0,0,0,0.35);
  color: #fff;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.project__body { padding: 26px; }
.project__body h3 { font-size: 1.25rem; margin-bottom: 8px; }
.project__body > p { color: var(--muted); margin-bottom: 20px; font-size: 0.95rem; }
.project__metrics { display: flex; gap: 28px; }
.project__metrics strong { display: block; font-size: 1.4rem; color: var(--brand); }
.project__metrics span { color: var(--muted); font-size: 0.8rem; }

/* ============ Quote ============ */
.quote {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.quote p { font-size: clamp(1.2rem, 2.5vw, 1.7rem); font-weight: 600; line-height: 1.5; }
.quote footer { margin-top: 22px; color: var(--muted); }
.quote strong { color: var(--text); }

/* ============ Contact ============ */
.contact {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.contact__intro .section__title { margin-top: 8px; }
.contact__details { margin-top: 30px; display: grid; gap: 18px; }
.contact__details li { display: flex; flex-direction: column; }
.contact__details span {
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}
.contact__details a:hover { color: var(--brand); }

.field { margin-bottom: 18px; }
.field label { display: block; margin-bottom: 8px; font-size: 0.9rem; font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(108,139,255,0.2);
}
.field input.invalid, .field textarea.invalid { border-color: #ff5f57; }
.field textarea { resize: vertical; }
.form__status { margin-top: 14px; font-size: 0.9rem; min-height: 20px; }
.form__status.success { color: var(--accent); }
.form__status.error { color: #ff8f6b; }

/* ============ Footer ============ */
.footer { border-top: 1px solid var(--border); padding: 36px 0; }
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.footer p { color: var(--muted); font-size: 0.9rem; }
.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--muted);
  transition: all 0.2s;
}
.footer__social a:hover { color: #fff; border-color: var(--brand); background: var(--surface); }

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__card--float { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 60px; }
  .hero__visual { max-width: 420px; }
  .about, .contact { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav__toggle { display: flex; }
  .nav__menu {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(11,15,26,0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    padding: 18px 24px 28px;
    transform: translateY(-130%);
    transition: transform 0.4s var(--ease);
  }
  .nav__menu.open { transform: translateY(0); }
  .nav__link { padding: 14px; }
  .nav__cta { margin: 8px 0 0; text-align: center; }
}

@media (max-width: 560px) {
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
  .hero__stats { gap: 26px; }
  .section { padding: 64px 0; }
  .hero { padding: 120px 0 70px; }
  .card { padding: 24px; }
}