/* cyber-portfolio - preto e branco */

:root {
  --bg:    #000;
  --panel: #0c0c0c;
  --fg:    #d9d9d9;
  --dim:   #8a8a8a;
  --faint: #565656;
  --line:  #242424;
  --white: #fff;
  --mono:  "JetBrains Mono", "Cascadia Mono", Consolas, "Courier New", monospace;
  --largura: 720px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 40px 20px 80px;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 14.5px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--largura); margin: 0 auto; }

/* ---- cabecalho ------------------------------------------ */
header.site {
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 32px;
}

header.site h1 {
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--white);
  letter-spacing: .5px;
}

header.site h1::before { content: "> "; color: var(--faint); }

header.site .tag {
  margin: 0 0 14px;
  color: var(--dim);
  font-size: 13px;
}

header.site nav a {
  color: var(--dim);
  text-decoration: none;
  margin-right: 18px;
  font-size: 13.5px;
}

header.site nav a::before { content: "./"; color: var(--faint); }

header.site nav a:hover,
header.site nav a.on { color: var(--bg); background: var(--white); }

/* ---- texto ---------------------------------------------- */
h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin: 38px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

h3 {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--white);
  margin: 28px 0 8px;
}

h3::before { content: "$ "; color: var(--faint); }

p { margin: 0 0 14px; }

a { color: var(--white); text-decoration: none; border-bottom: 1px solid var(--faint); }
a:hover { background: var(--white); color: var(--bg); border-bottom-color: var(--white); }

ul, ol { padding-left: 20px; margin: 0 0 14px; }
li { margin-bottom: 4px; }

hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

.cursor {
  display: inline-block;
  width: 8px; height: 15px;
  background: var(--fg);
  vertical-align: -2px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }

/* ---- codigo --------------------------------------------- */
pre, code { font-family: var(--mono); }

code {
  background: #161616;
  color: #e6e6e6;
  padding: 1px 5px;
  font-size: 13px;
}

pre {
  background: var(--panel);
  border-left: 2px solid #333;
  padding: 12px 14px;
  margin: 0 0 18px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  position: relative;
}

pre code { background: none; padding: 0; font-size: 13px; }

pre .c { color: var(--faint); }
pre .k { color: var(--white); }
pre .s { color: #a6a6a6; }
pre .flag { color: var(--white); font-weight: 700; }

/* ---- listas de writeup ---------------------------------- */
ul.plain { list-style: none; padding-left: 0; }
ul.plain li { border-bottom: 1px solid var(--line); padding: 10px 0; margin: 0; }
ul.plain li:last-child { border-bottom: none; }
ul.plain a { border: none; }
ul.plain .quando { float: right; color: var(--faint); font-size: 12.5px; padding-left: 12px; }
ul.plain .nota { display: block; color: var(--dim); font-size: 13px; }

.challenge-index { list-style: none; padding-left: 0; }
.challenge-index li { margin-bottom: 3px; }
.challenge-index li::before { content: "- "; color: var(--faint); }

/* ---- tags ------------------------------------------------ */
.tags { margin: 0 0 18px; }
.tag {
  display: inline-block;
  font-size: 11.5px;
  color: var(--dim);
  border: 1px solid var(--line);
  padding: 0 6px;
  margin-right: 6px;
  text-transform: uppercase;
  letter-spacing: .6px;
}

.meta { color: var(--faint); font-size: 12.5px; margin: 0 0 22px; }

/* ---- tabelas -------------------------------------------- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin: 0 0 18px;
}
th, td {
  text-align: left;
  padding: 6px 10px 6px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { color: var(--white); font-weight: 600; }
td { color: var(--fg); }

/* ---- citacao -------------------------------------------- */
blockquote {
  margin: 0 0 18px;
  padding: 2px 0 2px 14px;
  border-left: 2px solid #333;
  color: var(--dim);
}

/* ---- caixas / imagens ----------------------------------- */
.box {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 12px 14px;
  margin: 0 0 18px;
  color: var(--dim);
  font-size: 13.5px;
}

img { max-width: 100%; height: auto; border: 1px solid var(--line); margin: 6px 0 18px; }

/* ---- rodape --------------------------------------------- */
footer {
  margin-top: 56px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 12.5px;
}

footer a { color: var(--dim); border: none; }

/* ---- responsivo ----------------------------------------- */
@media (max-width: 560px) {
  body { padding: 24px 14px 56px; font-size: 14px; }
  header.site nav a { display: inline-block; margin-bottom: 4px; }
  ul.plain .quando { float: none; display: block; padding-left: 0; }
  pre { font-size: 12px; }
}

@media print {
  body { background: #fff; color: #000; }
  a { color: #000; border: none; }
}

/* ---- cartoes de write-up -------------------------------- */
.cartoes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 10px;
  margin: 0 0 18px;
}

a.cartao {
  display: flex;
  flex-direction: column;
  gap: 3px;
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 15px 17px;
  text-decoration: none;
  color: var(--fg);
  background: transparent;
  transition: border-color .15s, background .15s, color .15s;
}

a.cartao:hover {
  background: #0e0e0e;
  border-color: var(--faint);
  color: var(--white);
}

.cartao__evento {
  font-size: 11.5px;
  letter-spacing: .8px;
  text-transform: uppercase;
  color: var(--faint);
  transition: color .15s;
}

.cartao__titulo {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .3px;
  color: var(--white);
}

.cartao__titulo::before { content: "> "; color: var(--faint); }

.cartao__meta {
  font-size: 12.5px;
  color: var(--dim);
  margin-top: 2px;
}

a.cartao:hover .cartao__evento { color: var(--dim); }

@media (max-width: 560px) {
  .cartoes { grid-template-columns: 1fr; }
}

/* ---- credito do rodape ---------------------------------- */
/* O rodape tem um link discreto. O `a:hover` global inverte para fundo branco,
   o que num credito de rodape fica gritante — aqui isso e anulado. */
footer a.credito {
  color: var(--faint);
  border: none;
  text-decoration: none;
  transition: color .2s;
}

footer a.credito:hover {
  background: none;
  color: var(--dim);
  border: none;
}

.intro {
  color: var(--dim);
  font-size: 13.5px;
  max-width: 58ch;
  margin: 0 0 30px;
}