/* ============================================
   DAN DATA HUB — Global Stylesheet
   Version 1.0
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&family=Share+Tech+Mono&display=swap');

/* ── CSS Variables ── */
:root {
  --bg:          #0D0D0D;
  --bg-card:     #111111;
  --bg-card-alt: #161616;
  --border:      #222222;
  --border-glow: #F5A62344;
  --orange:      #F5A623;
  --orange-dim:  #C4821A;
  --green:       #4ADE80;
  --green-dim:   #22C55E44;
  --cyan:        #00D4FF;
  --white:       #E2E8F0;
  --grey:        #6B7280;
  --grey-light:  #9CA3AF;
  --font-mono:   'JetBrains Mono', 'Share Tech Mono', monospace;
  --radius:      4px;
  --transition:  0.2s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-mono);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Scanline overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── Selection ── */
::selection { background: var(--orange); color: #000; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--orange-dim); border-radius: 3px; }

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  opacity: 0.4;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo img {
  height: 42px;
  width: auto;
}

.logo-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.1em;
  line-height: 1.2;
}

.logo-text span {
  display: block;
  font-size: 0.65rem;
  color: var(--grey-light);
  font-weight: 400;
  letter-spacing: 0.15em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 0.4rem 0.75rem;
  color: var(--grey-light);
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: all var(--transition);
  position: relative;
}

.nav-links a::before {
  content: '//';
  color: var(--orange);
  opacity: 0;
  margin-right: 4px;
  transition: opacity var(--transition);
  font-size: 0.7rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--orange);
  border-color: var(--border-glow);
  background: rgba(245,166,35,0.05);
}

.nav-links a:hover::before,
.nav-links a.active::before {
  opacity: 1;
}

/* Lang Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.lang-btn {
  background: none;
  border: none;
  padding: 0.35rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--grey);
  cursor: pointer;
  transition: all var(--transition);
}

.lang-btn.active {
  background: var(--orange);
  color: #000;
}

.lang-btn:hover:not(.active) {
  color: var(--orange);
  background: rgba(245,166,35,0.08);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: 1rem;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--orange);
  transition: all var(--transition);
}

/* Mobile nav */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(13,13,13,0.98);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    gap: 0.25rem;
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.6rem 1rem; }
  .lang-toggle { margin-left: 0.75rem; }
}

/* ============================================
   MAIN CONTENT WRAPPER
   ============================================ */
main {
  padding-top: 64px;
  min-height: 100vh;
}

/* ============================================
   SECTION STYLES
   ============================================ */
.section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-label::before { content: '// '; color: var(--grey); }

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.section-title .accent { color: var(--orange); }

.section-sub {
  color: var(--grey-light);
  font-size: 0.88rem;
  margin-bottom: 3rem;
  max-width: 600px;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-alt);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,166,35,0.08);
}

.card:hover::before { transform: scaleX(1); }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--orange);
  color: #000;
  border-color: var(--orange);
}

.btn-primary:hover {
  background: var(--orange-dim);
  border-color: var(--orange-dim);
  box-shadow: 0 0 20px rgba(245,166,35,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--orange);
  border-color: var(--orange);
}

.btn-outline:hover {
  background: rgba(245,166,35,0.08);
  box-shadow: 0 0 20px rgba(245,166,35,0.15);
}

/* ============================================
   BADGES / TAGS
   ============================================ */
.tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  border-radius: 2px;
  font-weight: 600;
}

.tag-orange { background: rgba(245,166,35,0.12); color: var(--orange); border: 1px solid rgba(245,166,35,0.25); }
.tag-green  { background: rgba(74,222,128,0.1);  color: var(--green);  border: 1px solid rgba(74,222,128,0.25); }
.tag-cyan   { background: rgba(0,212,255,0.1);   color: var(--cyan);   border: 1px solid rgba(0,212,255,0.25); }
.tag-grey   { background: rgba(107,114,128,0.15); color: var(--grey-light); border: 1px solid rgba(107,114,128,0.25); }

/* ============================================
   TERMINAL PROMPT EFFECT
   ============================================ */
.prompt { color: var(--orange); }
.prompt-path { color: var(--green); }
.prompt-sym { color: var(--grey); }

.cursor {
  display: inline-block;
  width: 10px;
  height: 1.1em;
  background: var(--orange);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ============================================
   GRID UTILITIES
   ============================================ */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 0.75rem;
}

.progress-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--orange), var(--green));
  transition: width 1s ease;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
  text-align: center;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--grey);
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--orange); }

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--grey);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--transition);
}

.social-icon:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(245,166,35,0.08);
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--grey);
  letter-spacing: 0.08em;
}

.footer-copy .accent { color: var(--orange); }

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding: 4rem 2rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.page-hero .breadcrumb {
  font-size: 0.72rem;
  color: var(--grey);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.page-hero .breadcrumb a {
  color: var(--orange);
  text-decoration: none;
}

.page-hero .breadcrumb a:hover { text-decoration: underline; }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes glitch {
  0%   { clip-path: inset(40% 0 61% 0); transform: translate(-2px, 0); }
  20%  { clip-path: inset(92% 0 1% 0);  transform: translate(2px, 0); }
  40%  { clip-path: inset(43% 0 1% 0);  transform: translate(0, 0); }
  60%  { clip-path: inset(25% 0 58% 0); transform: translate(2px, 0); }
  80%  { clip-path: inset(54% 0 7% 0);  transform: translate(-2px, 0); }
  100% { clip-path: inset(58% 0 43% 0); transform: translate(0, 0); }
}

.fade-in { animation: fadeInUp 0.6s ease forwards; }
.fade-in-delay-1 { animation: fadeInUp 0.6s ease 0.1s both; }
.fade-in-delay-2 { animation: fadeInUp 0.6s ease 0.2s both; }
.fade-in-delay-3 { animation: fadeInUp 0.6s ease 0.3s both; }
.fade-in-delay-4 { animation: fadeInUp 0.6s ease 0.4s both; }

/* ============================================
   GLOW EFFECTS
   ============================================ */
.glow-orange { text-shadow: 0 0 20px rgba(245,166,35,0.5); }
.glow-green  { text-shadow: 0 0 20px rgba(74,222,128,0.5); }

/* ============================================
   UTILITY
   ============================================ */
.text-orange { color: var(--orange); }
.text-green  { color: var(--green); }
.text-grey   { color: var(--grey); }
.text-mono   { font-family: var(--font-mono); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.hidden { display: none !important; }

/* ── Language visibility ── */
/* Hide EN content by default — but NEVER hide the toggle buttons themselves */
[data-lang="en"]:not(.lang-btn) { display: none !important; }

/* PT → EN switch */
body.lang-en [data-lang="pt"]:not(.lang-btn) { display: none !important; }
body.lang-en [data-lang="en"]:not(.lang-btn) { display: revert !important; }
body.lang-en span[data-lang="en"]   { display: inline !important; }
body.lang-en span[data-lang="pt"]   { display: none !important; }
body.lang-en div[data-lang="en"]    { display: block !important; }
body.lang-en div[data-lang="pt"]    { display: none !important; }
body.lang-en a[data-lang="en"]      { display: inline !important; }
body.lang-en a[data-lang="pt"]      { display: none !important; }
body.lang-en li[data-lang="en"]     { display: list-item !important; }
body.lang-en li[data-lang="pt"]     { display: none !important; }
body.lang-en option[data-lang="en"] { display: block !important; }
body.lang-en option[data-lang="pt"] { display: none !important; }