@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Staatliches&display=swap");

:root {
  color-scheme: light dark;

  /* Core palette — alter here to re-theme quickly */
  --bg-1: hsl(210, 20%, 98%);
  --bg-2: hsl(210, 16%, 92%);
  --text-1: hsl(210, 12%, 10%);
  --text-2: hsl(210, 10%, 35%);
  --accent: hsl(188, 75%, 45%);
  --accent-contrast: hsl(0, 0%, 100%);
  --surface: hsl(0, 0%, 100%);
  --surface-hover: hsl(0, 0%, 96%);
  --border: hsl(210, 16%, 85%);
  --separator: hsl(0, 0%, 90%);
  --shadow-elev-1: 0 6px 24px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.06);
  --bg-gradient: linear-gradient(120deg, var(--bg-1) 0%, var(--bg-2) 100%);

  /* Layout and typography */
  --container: 1100px;
  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 24px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

:root[data-theme="dark"] {
  --bg-1: hsl(200, 35%, 7%);
  --bg-2: hsl(200, 60%, 2%);
  --text-1: hsl(210, 15%, 92%);
  --text-2: hsl(210, 10%, 70%);
  --accent: hsl(188, 75%, 48%);
  --accent-contrast: hsl(195, 100%, 6%);
  --surface: hsl(200, 25%, 12%);
  --surface-hover: hsl(200, 25%, 16%);
  --border: hsl(200, 20%, 22%);
  --separator: hsl(200, 12%, 28%);
  --shadow-elev-1: 0 8px 24px rgba(0,0,0,.45), 0 2px 8px rgba(0,0,0,.35);
}

/* Reset and base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, Noto Sans, "Helvetica Neue", sans-serif;
  color: var(--text-1);
  background: var(--bg-gradient);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 200ms ease, color 200ms ease;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* Header / Nav */
 .site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-bottom: 1px solid var(--border);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
 }
 .nav {
  height: 64px;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-grid;
  place-items: center;
  background: linear-gradient(135deg, hsl(188 85% 48%), hsl(160 85% 45%));
  color: var(--accent-contrast);
  font-family: Staatliches, Inter, sans-serif;
  letter-spacing: 1px;
}
.brand-name { font-weight: 700; }

.nav-links { margin-left: auto; display: none; gap: var(--space-4); }
.nav-links a {
  color: var(--text-2);
  padding: 8px 10px;
  border-radius: 8px;
}
.nav-links a:hover { color: var(--accent); background: var(--surface-hover); }

/* Language switch */
.lang-switch { display: inline-flex; gap: 6px; margin-left: auto; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  cursor: pointer;
}
.lang-btn .flag { font-size: 16px; line-height: 1; }
.lang-btn .label { font-weight: 600; font-size: 12px; letter-spacing: .04em; }
.lang-btn[aria-pressed="true"] {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: var(--surface-hover);
}

/* Theme toggle */
.theme-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-1);
  box-shadow: var(--shadow-elev-1);
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.theme-toggle:hover { background: var(--surface-hover); }
.theme-toggle i { font-size: 18px; }
/* Colored icons depending on theme */
:root[data-theme="dark"] .theme-toggle i.fa-sun-o { color: #f59e0b; }
:root[data-theme="light"] .theme-toggle i.fa-moon-o { color: #6366f1; }

/* Hero */
.hero {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}
.hero-content {
  text-align: center;
  padding-top: var(--space-5);
  padding-bottom: var(--space-5);
}
.eyebrow {
  color: var(--text-2);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0 0 var(--space-2);
}
.hero-title {
  font-size: clamp(40px, 8vw, 64px);
  line-height: 1.05;
  margin: 0 0 var(--space-3);
  background: linear-gradient(180deg, var(--text-1), color-mix(in srgb, var(--accent) 40%, var(--text-1)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-subtitle {
  font-size: clamp(16px, 2.6vw, 20px);
  color: var(--text-2);
  margin: 0 0 var(--space-3);
}
.hero-meta {
  color: var(--text-2);
  margin-bottom: var(--space-5);
}
.hero-meta .dot { margin: 0 var(--space-2); opacity: .5; }

.hero-actions { display: flex; gap: var(--space-3); justify-content: center; margin-bottom: var(--space-5); }

.social { display: flex; gap: var(--space-4); justify-content: center; }
.social a {
  display: inline-grid;
  place-items: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text-1);
  box-shadow: var(--shadow-elev-1);
}
.social a:hover { color: var(--accent); background: var(--surface-hover); }

/* Sections */
.section { padding-block: var(--space-6); }
.hero, .section { scroll-margin-top: 76px; }
.section-title {
  font-size: clamp(22px, 3vw, 28px);
  margin: 0 0 var(--space-4);
  color: var(--accent);
  letter-spacing: .5px;
}

/* Cards / content modules */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-elev-1);
  padding: var(--space-5);
}

/* Blue callout card */
.card-cta {
  position: relative;
  overflow: hidden;
}
.card-cta--blue {
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
  border: 1px solid color-mix(in srgb, #0ea5e9 40%, var(--border));
  color: white;
}
.card-cta--blue .job-role,
.card-cta--blue p { color: white; }
.card-cta--blue .contact-actions .btn-contrast {
  background: white;
  color: #0b5cab;
  border-color: transparent;
}
.card-cta--blue .contact-actions .btn-contrast:hover {
  filter: brightness(0.95);
}

/* Contrast button (light on dark) */
.btn-contrast {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--accent-contrast);
  color: var(--text-1);
}
.cards {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(12, 1fr);
}
.card.job { grid-column: span 12; }

/* Ensure project cards have proper width */
#projetos .cards .card { grid-column: span 12; }
@media (min-width: 800px) {
  #projetos .cards .card { grid-column: span 3; }
}

.job-header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: baseline;
  margin-bottom: var(--space-2);
}
.job-role { font-size: 20px; margin: 0; }
.job-time { color: var(--text-2); font-size: 14px; }
.job-duration { color: var(--text-2); font-size: 14px; margin-left: 6px; white-space: nowrap; }

/* Experience timeline */
#experiencia .cards { position: relative; grid-template-columns: 1fr; }
#experiencia .cards::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: 22px;
  width: 2px;
  background: var(--border);
}
#experiencia .card.job { position: relative; padding-left: 54px; }
#experiencia .card.job::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 28px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  box-shadow: var(--shadow-elev-1);
}

/* Grid columns for skills */
.columns { display: grid; gap: var(--space-4); grid-template-columns: repeat(12, 1fr); }
.column { grid-column: span 12; }
.h4 { font-size: 16px; color: var(--text-2); margin: 0 0 var(--space-2); }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  color: color-mix(in srgb, var(--accent) 60%, var(--text-1));
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-1);
  box-shadow: var(--shadow-elev-1);
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, transform 80ms ease;
}
.btn:hover { background: var(--surface-hover); color: var(--accent); }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: color-mix(in srgb, var(--accent) 65%, var(--border));
}
.btn-primary:hover { filter: brightness(1.05); color: var(--accent-contrast); }

.btn-ghost { background: transparent; }

/* Contact */
.contact { display: flex; flex-direction: column; gap: var(--space-4); }
.contact-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* Footer */
.site-footer { padding-bottom: var(--space-7); color: var(--text-2); }
.site-footer p { margin: var(--space-5) 0 0; text-align: center; font-size: 14px; }

/* Back to top floating button */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-1);
  box-shadow: var(--shadow-elev-1);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease, background-color 160ms ease;
  z-index: 90;
}
.back-to-top .label { display: none; font-size: 12px; color: var(--text-2); }
.back-to-top i { font-size: 16px; }
.back-to-top:hover { background: var(--surface-hover); color: var(--accent); }
.back-to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

@media (min-width: 800px) {
  .back-to-top .label { display: inline; }
}

/* Responsive */
@media (min-width: 800px) {
  .nav-links { display: flex; }
  .theme-toggle { margin-left: 0; }
  .card.job { grid-column: span 6; }
  .columns { grid-template-columns: repeat(12, 1fr); }
  .column { grid-column: span 4; }
  /* Keep experience as single column for a continuous timeline on desktop */
  #experiencia .cards { grid-template-columns: 1fr; }
  #experiencia .card.job { grid-column: span 12; }
}

/* Larger screens get a bit more breathing room vertically */
@media (min-width: 1024px) {
  .hero { padding-top: var(--space-7); padding-bottom: var(--space-7); }
  .hero-content { padding-top: var(--space-7); padding-bottom: var(--space-7); }
  .section { padding-block: var(--space-5); }
}

/* Small screens: increase horizontal padding to avoid content touching edges */
@media (max-width: 480px) {
  .container { padding: 0 var(--space-6); }
  /* Mais respiro no mobile */
  .hero { padding-block: var(--space-7); }
  .hero-content { padding-top: var(--space-6); padding-bottom: var(--space-6); }
  .section { padding-block: var(--space-3); }
  .section-title { margin-bottom: var(--space-5); }
  .cards { gap: var(--space-5); }
  .card { padding: var(--space-4); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}