/* ============================================================
   AlejtoDev — main.css
   Global design tokens + shared components (nav, hero, footer…)
   Vanilla CSS, mobile-first, breakpoint @768px.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Palette */
  --color-bg: #0d1117;
  --color-bg2: #161b22;
  --color-bg3: #21262d;
  --color-teal: #1D9E75;
  --color-teal-dim: #0f6e56;
  --color-purple: #7c5cbf;
  --color-purple-light: #a48de0;
  --color-coral: #e8613a;
  --color-text: #e6edf3;
  --color-text-muted: #8b949e;
  --color-text-dim: #484f58;
  --color-border: #30363d;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --maxw: 1120px;
  --gutter: 1.25rem;
  --radius: 12px;
  --radius-sm: 8px;
  --nav-h: 64px;

  /* Transitions */
  --t-fast: 140ms ease;
  --t-med: 240ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

h1, h2, h3 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Accessibility: visible focus */
:focus-visible {
  outline: 2px solid var(--color-teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono { font-family: var(--font-mono); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-teal);
}

.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.section-head {
  max-width: 640px;
  margin-bottom: 2.5rem;
}
.section-head h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-block: 0.6rem 0.5rem;
}
.section-head p {
  color: var(--color-text-muted);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}
.btn:hover { transform: translateY(-2px); }

.btn-coral {
  background: var(--color-coral);
  color: #fff;
}
.btn-coral:hover { background: #f0723f; }

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover { border-color: var(--color-teal); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding-inline: 0;
}
.btn-ghost:hover { color: var(--color-teal); }

/* ============================================================
   Navigation (sticky + blur)
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(13, 17, 23, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.nav__logo .accent { color: var(--color-teal); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav__links a {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  transition: color var(--t-fast);
}
.nav__links a:hover { color: var(--color-text); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.nav.open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-bg2);
    border-bottom: 1px solid var(--color-border);
    padding: var(--gutter);
    transform: translateY(-120%);
    transition: transform var(--t-med);
  }
  .nav.open .nav__links { transform: translateY(0); }
  .nav__links a,
  .nav__links .btn {
    width: 100%;
    padding-block: 0.85rem;
  }
  .nav__toggle { display: flex; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding-block: clamp(3rem, 8vw, 6rem);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  margin-block: 1rem;
}
.hero h1 .teal { color: var(--color-teal); }
.hero h1 .purple {
  display: block;
  color: var(--color-purple-light);
}
.hero__lead {
  color: var(--color-text-muted);
  max-width: 46ch;
  font-size: 1.05rem;
}

.hero__stats {
  display: flex;
  gap: 2rem;
  margin-block: 2rem;
  flex-wrap: wrap;
}
.hero__stats .stat strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--color-teal);
}
.hero__stats .stat span {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.hero__cta {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* ---------- Terminal block ---------- */
.terminal {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
  font-family: var(--font-mono);
  font-size: 0.86rem;
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: var(--color-bg3);
  border-bottom: 1px solid var(--color-border);
}
.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal__dot.red { background: #ff5f56; }
.terminal__dot.yellow { background: #ffbd2e; }
.terminal__dot.green { background: #27c93f; }
.terminal__title {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--color-text-dim);
}
.terminal__body {
  padding: 1.1rem 1.25rem;
  line-height: 1.85;
  overflow-x: auto;
}
.terminal__body .key { color: var(--color-purple-light); }
.terminal__body .str { color: var(--color-teal); }
.terminal__body .num { color: var(--color-coral); }
.terminal__body .com { color: var(--color-text-dim); }
.terminal__body .punc { color: var(--color-text-muted); }

.cursor {
  display: inline-block;
  width: 9px;
  height: 1.1em;
  background: var(--color-teal);
  vertical-align: text-bottom;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

@media (min-width: 769px) {
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; }
}

/* ============================================================
   Versions strip
   ============================================================ */
.versions {
  background: var(--color-bg2);
  border-block: 1px solid var(--color-border);
  padding-block: 1.5rem;
}
.versions__inner {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.versions__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-dim);
  margin-right: 0.5rem;
}
.badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.badge--active {
  color: var(--color-teal);
  border-color: rgba(29, 158, 117, 0.4);
  background: rgba(29, 158, 117, 0.08);
}
.badge--legacy {
  color: var(--color-text-dim);
}
.badge--special {
  color: var(--color-purple-light);
  border-color: rgba(124, 92, 191, 0.45);
  background: rgba(124, 92, 191, 0.1);
}

/* ============================================================
   Cards grid (modules + blog share .card)
   ============================================================ */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--t-med), border-color var(--t-med);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-teal-dim);
}
.card__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}
.card__name {
  font-family: var(--font-mono);
  font-size: 1.02rem;
  color: var(--color-text);
}
.card__price {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-coral);
  white-space: nowrap;
}
.card__meta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-teal);
}
.card__desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  flex: 1;
}
.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  background: var(--color-bg3);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
}
.card--placeholder {
  border-style: dashed;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-text-muted);
  min-height: 150px;
}
.card--placeholder:hover { transform: none; border-color: var(--color-purple); }

/* ============================================================
   Services
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.service {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--svc, var(--color-teal));
  border-radius: var(--radius);
  padding: 1.6rem 1.4rem;
}
.service--teal { --svc: var(--color-teal); }
.service--purple { --svc: var(--color-purple); }
.service--coral { --svc: var(--color-coral); }
.service__icon { font-size: 1.6rem; }
.service h3 {
  font-size: 1.15rem;
  margin-block: 0.6rem 0.9rem;
}
.service ul { display: grid; gap: 0.55rem; }
.service li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding-left: 1.1rem;
  position: relative;
}
.service li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--svc);
}
@media (min-width: 769px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================
   Tech stack
   ============================================================ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.85rem;
}
.stack-item {
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.95rem;
  transition: border-color var(--t-fast);
}
.stack-item:hover { border-color: var(--color-teal-dim); }
.stack-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.92rem;
}
.stack-item span {
  font-size: 0.76rem;
  color: var(--color-text-dim);
}

/* ============================================================
   Collaborations
   ============================================================ */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.pill {
  font-size: 0.88rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: var(--color-bg2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

/* ============================================================
   Final CTA
   ============================================================ */
.cta {
  position: relative;
  border-top: 1px solid var(--color-border);
  background:
    radial-gradient(900px 300px at 20% 0%, rgba(29, 158, 117, 0.12), transparent 70%),
    radial-gradient(900px 300px at 80% 100%, rgba(124, 92, 191, 0.14), transparent 70%);
  text-align: center;
}
.cta h2 {
  font-size: clamp(1.7rem, 5vw, 2.6rem);
  margin-bottom: 0.6rem;
}
.cta p { color: var(--color-text-muted); margin-bottom: 1.8rem; }
.cta__btns {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.cta__contact {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}
.cta__contact a {
  color: var(--color-text-muted);
  transition: color var(--t-fast);
}
.cta__contact a:hover { color: var(--color-teal); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: 2rem;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__copy {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}
.footer__links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.85rem;
}
.footer__links a {
  color: var(--color-text-muted);
  transition: color var(--t-fast);
}
.footer__links a:hover { color: var(--color-teal); }

/* ============================================================
   Reveal-on-scroll animation (progressive enhancement)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
}