/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Design System — joelferreira.eu ── */
:root {
  --base:         #0a0a0f;
  --surface:      #111118;
  --surface-2:    #18181f;
  --border:       rgba(255,255,255,.07);
  --border-glow:  rgba(99,102,241,.3);

  --primary:      #f0f0f5;
  --secondary:    #8888aa;
  --accent:       #6366f1;
  --accent-h:     #818cf8;

  /* Domain colours */
  --d-tech:        #818cf8;
  --d-bio:         #34d399;
  --d-agri:        #fbbf24;
  --d-esot:        #c084fc;
  --d-culin:       #fb923c;

  --d-tech-bg:     rgba(129,140,248,.08);
  --d-bio-bg:      rgba(52,211,153,.08);
  --d-agri-bg:     rgba(251,191,36,.08);
  --d-esot-bg:     rgba(192,132,252,.08);
  --d-culin-bg:    rgba(251,146,60,.08);

  --font:   'Inter', system-ui, sans-serif;
  --radius: 12px;
  --max-w:  1200px;
  --ease:   cubic-bezier(.16,1,.3,1);
}

/* ── Base ── */
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--base);
  color: var(--primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Typography scale ── */
h1 { font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 900; line-height: 1.05; letter-spacing: -.03em; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem);  font-weight: 800; line-height: 1.15; letter-spacing: -.02em; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); font-weight: 700; }
h4 { font-size: 1rem; font-weight: 700; }
p  { color: var(--secondary); line-height: 1.75; }

/* ── Layout helpers ── */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section    { padding: 100px 0; }
.section-alt { background: var(--surface); }

/* ── Gradient text ── */
.gradient-text {
  background: linear-gradient(135deg, #6366f1, #a78bfa, #818cf8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Utilities ── */
.img-cover   { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.overlay     { position: absolute; inset: 0; }
.relative    { position: relative; }
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-muted  { color: var(--secondary); }
.fw-black    { font-weight: 900; }
.sr-only     { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: none;
  transition: opacity .2s, transform .15s;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn-accent  { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--border-glow); }
.btn-outline:hover { border-color: var(--accent); background: rgba(99,102,241,.08); }

/* ── Badges de domínio ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .25rem .85rem;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  border: 1px solid currentColor;
}
.badge-tech  { color: var(--d-tech);  background: var(--d-tech-bg);  border-color: rgba(129,140,248,.25); }
.badge-bio   { color: var(--d-bio);   background: var(--d-bio-bg);   border-color: rgba(52,211,153,.25); }
.badge-agri  { color: var(--d-agri);  background: var(--d-agri-bg);  border-color: rgba(251,191,36,.25); }
.badge-esot  { color: var(--d-esot);  background: var(--d-esot-bg);  border-color: rgba(192,132,252,.25); }
.badge-culin { color: var(--d-culin); background: var(--d-culin-bg); border-color: rgba(251,146,60,.25); }

/* ── Domain accent helpers ── */
.accent-tech  { color: var(--d-tech); }
.accent-bio   { color: var(--d-bio); }
.accent-agri  { color: var(--d-agri); }
.accent-esot  { color: var(--d-esot); }
.accent-culin { color: var(--d-culin); }
.accent-main  { color: var(--accent); }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .3s, transform .3s var(--ease);
}
.card:hover { border-color: var(--border-glow); transform: translateY(-4px); }
.card-body  { padding: 1.5rem; }

/* ── Blog card ── */
.blog-card-img {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--surface-2);
}
.blog-card-img img { transition: transform .5s var(--ease); width: 100%; height: 100%; object-fit: cover; }
.blog-card:hover .blog-card-img img { transform: scale(1.05); }

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  height: 64px;
  display: flex;
  align-items: center;
  background: rgba(10,10,15,.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }

.nav-logo {
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: -.02em;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: .25rem;
}
.nav-links a {
  padding: .4rem .85rem;
  border-radius: 8px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--secondary);
  transition: color .2s, background .2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); background: rgba(255,255,255,.06); }
.nav-links .sep { width: 1px; height: 16px; background: var(--border); margin: 0 .25rem; }

.nav-cta { margin-left: .5rem; }

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: .25rem;
  position: relative;
  z-index: 1001;
}

/* ── Mobile menu overlay ── */
#mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--base);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .25rem;
}
#mobile-menu.open { display: flex; }
#mobile-menu a {
  font-size: 1.4rem;
  font-weight: 700;
  padding: .85rem 2.5rem;
  color: var(--secondary);
  border-radius: 12px;
  width: 100%;
  text-align: center;
  max-width: 320px;
  transition: color .2s, background .2s;
}
#mobile-menu a:hover,
#mobile-menu a.active { color: var(--primary); background: rgba(255,255,255,.06); }
.mobile-menu-sep { width: 40px; height: 1px; background: var(--border); margin: .5rem 0; }
#mobile-menu .mobile-menu-cta {
  color: var(--primary);
  background: var(--accent);
  border-radius: 10px;
  margin-top: .5rem;
}
#mobile-menu .mobile-menu-cta:hover { background: var(--accent-h); }

/* ── Footer ── */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-logo { font-weight: 900; font-size: 1.2rem; margin-bottom: .75rem; }
.footer-logo span { color: var(--accent); }
.footer-desc { font-size: .9rem; color: var(--secondary); line-height: 1.7; max-width: 280px; }
.footer-col h5 { font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--secondary); margin-bottom: 1rem; }
.footer-col ul { display: flex; flex-direction: column; gap: .5rem; }
.footer-col ul a { font-size: .9rem; color: var(--secondary); transition: color .2s; }
.footer-col ul a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .85rem;
  color: var(--secondary);
}
.footer-social { display: flex; gap: 1rem; }
.footer-social a { color: var(--secondary); font-size: .85rem; transition: color .2s; }
.footer-social a:hover { color: var(--primary); }

/* ── Parallax ── */
.parallax-wrap { position: relative; overflow: hidden; }
.parallax-layer { will-change: transform; }

/* ── Animations ── */
[data-animate] {
  opacity: 0;
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-animate="fade-up"]    { transform: translateY(40px); }
[data-animate="fade-down"]  { transform: translateY(-40px); }
[data-animate="fade-left"]  { transform: translateX(40px); }
[data-animate="fade-right"] { transform: translateX(-40px); }
[data-animate="scale-in"]   { transform: scale(.92); }
[data-animate].in-view { opacity: 1; transform: none; }

[data-delay="100"] { transition-delay: 100ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="500"] { transition-delay: 500ms; }
[data-delay="600"] { transition-delay: 600ms; }

/* ── Divider ── */
.divider { height: 1px; background: var(--border); margin: 0; }

/* ── Label / eyebrow ── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* ── Grid helpers ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.5rem; }

/* ── Page header (domain/blog) ── */
.page-header {
  padding-top: 64px;
  position: relative;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: center;
}
.page-header-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(10,10,15,.95) 45%, rgba(10,10,15,.6));
}
.page-header-content { position: relative; z-index: 1; padding-top: 80px; padding-bottom: 80px; }

/* ── Article content ── */
.prose { max-width: 720px; }
.prose p   { margin-bottom: 1.25rem; color: var(--secondary); }
.prose h2  { margin: 2.5rem 0 1rem; color: var(--primary); }
.prose h3  { margin: 2rem 0 .75rem; color: var(--primary); }
.prose ul  { list-style: disc; padding-left: 1.5rem; margin-bottom: 1.25rem; color: var(--secondary); }
.prose li  { margin-bottom: .4rem; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--secondary);
  font-style: italic;
}

/* ── Timeline (sobre page) ── */
.timeline { display: flex; flex-direction: column; gap: 0; }
.timeline-item {
  padding: 1.5rem 0 1.5rem 1.5rem;
  border-left: 2px solid var(--border);
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px; top: 1.75rem;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--base);
}
.timeline-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem .75rem;
  margin-bottom: .5rem;
}
.timeline-period {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font);
}
.timeline-company {
  font-size: .8rem;
  color: var(--secondary);
}
.timeline-role {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: .6rem;
}

/* ── Stack grid (sobre page) ── */
.stack-grid { display: flex; flex-direction: column; gap: 1.5rem; }
.stack-block { }
.stack-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: .6rem;
}

/* ── Tags / Pills ── */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.tag {
  display: inline-flex;
  align-items: center;
  font-size: .75rem;
  font-weight: 600;
  padding: .3rem .85rem;
  border-radius: 20px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--secondary);
  white-space: nowrap;
  letter-spacing: .02em;
  transition: border-color .2s, color .2s;
}
.tag:hover { border-color: var(--border-glow); color: var(--primary); }
.timeline-item .tags { margin-top: .75rem; }
.stack-block .tags   { margin-top: .5rem; }

/* ── Form ── */
.form-group { display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1.25rem; }
.form-label { font-size: .85rem; font-weight: 600; color: var(--primary); }
.form-control {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .75rem 1rem;
  color: var(--primary);
  font-family: var(--font);
  font-size: .95rem;
  width: 100%;
  transition: border-color .2s;
}
.form-control:focus { outline: none; border-color: var(--accent); }
.form-control::placeholder { color: var(--secondary); }
select.form-control option { background: var(--surface-2); }
textarea.form-control { resize: vertical; min-height: 150px; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .nav-links { display: none; }
  .nav-hamburger { display: block; }
  .page-header { min-height: 280px; }
  .page-header-content { padding-top: 48px; padding-bottom: 48px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .grid-4, .grid-5 { grid-template-columns: 1fr; }
  h1 { font-size: 2.4rem; }
  .btn { padding: .65rem 1.4rem; font-size: .9rem; }
}