/* =================================================================
   modern.css — Design system compartilhado
   Usado por: /index.html (página pessoal) e /maratonif/index.html
   Dark-first, com tipografia coerente com VPL (Inter + JetBrains Mono).
   ================================================================= */

:root {
  /* --- Base: background + surfaces ------------------------------- */
  --bg-0: #070A13;
  --bg-1: #0B1220;
  --bg-2: #111A2E;
  --bg-3: #1A2340;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* --- Texto ----------------------------------------------------- */
  --text: #E5E7EB;
  --text-soft: #94A3B8;
  --text-dim: #64748B;

  /* --- Acentos por ferramenta ------------------------------------ */
  --vpl: #10B981;         /* VPL — código, esmeralda                */
  --vpl-2: #047857;
  --runflow: #A855F7;     /* RunFlow — fluxograma, roxo             */
  --runflow-2: #6D28D9;
  --genetools: #06B6D4;   /* GeneTools — biologia, ciano            */
  --genetools-2: #0E7490;
  --maratonif: #F59E0B;   /* MARATONIF — maratona, âmbar            */
  --maratonif-2: #B45309;

  /* --- Gradientes (sutis — página é acadêmica, não vitrine) ----- */
  --grad-hero: radial-gradient(ellipse at 20% 0%, rgba(168, 85, 247, 0.06), transparent 55%),
               radial-gradient(ellipse at 85% 20%, rgba(16, 185, 129, 0.05), transparent 55%),
               linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
  --grad-text: linear-gradient(135deg, #E5E7EB 0%, #94A3B8 100%);
  --grad-brand: linear-gradient(135deg, var(--vpl) 0%, var(--genetools) 100%);

  /* --- Tipografia ----------------------------------------------- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Menlo, monospace;

  /* --- Espaço/raio/sombra --------------------------------------- */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(16, 185, 129, 0.08);

  /* --- Transições ----------------------------------------------- */
  --t-fast: 120ms cubic-bezier(.2, .6, .2, 1);
  --t-med:  240ms cubic-bezier(.2, .6, .2, 1);
}

/* ------------------------------------------------------------------ */
/* Reset mínimo                                                        */
/* ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

/* ------------------------------------------------------------------ */
/* Layout helpers                                                      */
/* ------------------------------------------------------------------ */
.wrap {
  width: min(1200px, 92vw);
  margin: 0 auto;
}
.section {
  padding: clamp(64px, 10vw, 128px) 0;
  position: relative;
}
.section--hero {
  padding: clamp(96px, 14vw, 160px) 0 clamp(64px, 9vw, 96px);
  display: flex;
  align-items: center;
  background: var(--grad-hero);
  position: relative;
  overflow: hidden;
}

/* ------------------------------------------------------------------ */
/* Tipografia                                                          */
/* ------------------------------------------------------------------ */
h1, h2, h3, h4 { margin: 0 0 0.5em; line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
p  { margin: 0 0 1em; color: var(--text-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-soft);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}
.eyebrow::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--vpl);
  box-shadow: 0 0 12px var(--vpl);
}

.gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-soft);
  max-width: 62ch;
}

/* ------------------------------------------------------------------ */
/* Botões                                                              */
/* ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--vpl);
  color: #04110B;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.2);
}
.btn--primary:hover {
  background: linear-gradient(135deg, var(--vpl) 0%, var(--vpl-2) 100%);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.28);
}
.btn--ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover { background: var(--surface-strong); }

/* ------------------------------------------------------------------ */
/* Cards de ferramenta / projeto                                       */
/* ------------------------------------------------------------------ */
.card {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: transform var(--t-med), border-color var(--t-med), box-shadow var(--t-med);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 100%;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--card-accent, linear-gradient(135deg, transparent, transparent));
  opacity: 0;
  transition: opacity var(--t-med);
  pointer-events: none;
  border-radius: inherit;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--card-tint, var(--border-strong));
  box-shadow: 0 20px 48px rgba(0,0,0,.4);
}
.card:hover::before { opacity: 0.07; }

.card__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--card-tint, var(--text-soft));
  font-weight: 600;
}
.card__badge::before {
  content: '';
  width: 8px; height: 8px; border-radius: 2px;
  background: var(--card-tint, var(--text-soft));
}

.card__title {
  font-size: 1.4rem;
  margin: 0;
}

.card__desc {
  color: var(--text-soft);
  margin: 0;
  font-size: 0.98rem;
}

.card__cta {
  margin-top: auto;
  padding-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--card-tint, var(--vpl));
  font-weight: 600;
  font-size: 0.92rem;
}
.card__cta svg { transition: transform var(--t-fast); }
.card:hover .card__cta svg { transform: translateX(4px); }

.card--vpl       { --card-tint: var(--vpl);        --card-accent: radial-gradient(ellipse at top right, var(--vpl), transparent 60%); }
.card--runflow   { --card-tint: var(--runflow);    --card-accent: radial-gradient(ellipse at top right, var(--runflow), transparent 60%); }
.card--genetools { --card-tint: var(--genetools);  --card-accent: radial-gradient(ellipse at top right, var(--genetools), transparent 60%); }
.card--maratonif { --card-tint: var(--maratonif);  --card-accent: radial-gradient(ellipse at top right, var(--maratonif), transparent 60%); }

/* thumbnail genérico com SVG */
.card__thumb {
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  background: var(--bg-3);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}
.card__thumb::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--card-accent);
  opacity: 0.18;
}
.card__thumb svg { position: relative; z-index: 1; }

/* ------------------------------------------------------------------ */
/* Grid de cards                                                       */
/* ------------------------------------------------------------------ */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

/* ------------------------------------------------------------------ */
/* Navbar                                                              */
/* ------------------------------------------------------------------ */
.nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  background: rgba(11, 18, 32, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-md);
}
.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: background var(--t-fast), color var(--t-fast);
}
.nav a:hover { color: var(--text); background: var(--surface); }
.nav a.active { color: var(--text); background: var(--surface-strong); }

@media (max-width: 640px) {
  .nav { padding: 6px; gap: 2px; width: calc(100% - 24px); overflow-x: auto; justify-content: flex-start; }
  .nav a { padding: 7px 10px; font-size: 0.82rem; flex-shrink: 0; }
}

/* ------------------------------------------------------------------ */
/* Footer                                                              */
/* ------------------------------------------------------------------ */
footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.88rem;
  text-align: center;
}
footer a { color: var(--text-soft); transition: color var(--t-fast); }
footer a:hover { color: var(--text); }

/* ------------------------------------------------------------------ */
/* Animação de entrada (reveal on scroll)                              */
/* ------------------------------------------------------------------ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease-out, transform 600ms cubic-bezier(.2,.6,.2,1);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------------------------ */
/* Utilidades                                                          */
/* ------------------------------------------------------------------ */
.stack { display: flex; flex-direction: column; }
.stack > * + * { margin-top: var(--gap, 16px); }
.row { display: flex; flex-wrap: wrap; gap: var(--gap, 16px); }
.center { display: grid; place-items: center; }
.mono { font-family: var(--font-mono); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}