/* base_style.css — variables comunes. Diseño plano en blanco/negro/gris, sin
   bordes redondeados, sombras ni color: el feedback de correcto/incorrecto se
   distingue por texto y por estilo de borde (sólido vs. punteado), no por color. */
:root {
  --bg: #ffffff;
  --bg-panel: #ffffff;
  --bg-panel-2: #f0f0f0;
  --border: #cccccc;
  --border-strong: #000000;
  --text: #111111;
  --text-dim: #555555;
  --accent: #000000;
  --radius: 0px;
  --font: Arial, Helvetica, "Segoe UI", sans-serif;
  --font-mono: "Consolas", "Courier New", monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

a { color: var(--text); text-decoration: underline; }
a:hover { color: #000000; }

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg);
  border-bottom: 2px solid var(--border-strong);
}

.navbar .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.navbar .brand img { height: 28px; width: auto; display: block; }
.navbar .brand span { color: var(--text); }

.container { max-width: 1100px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}

.card:hover { border-color: var(--border-strong); }

.btn {
  display: inline-block;
  background: #000000;
  color: #ffffff;
  border: 1px solid #000000;
  border-radius: var(--radius);
  padding: 9px 16px;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: 600;
}
.btn:hover { background: #222222; text-decoration: none; }
.btn.secondary { background: #ffffff; border: 1px solid #000000; color: #000000; }
.btn.secondary:hover { background: #f0f0f0; }
.btn.ok { background: #ffffff; color: #000000; border: 2px solid #000000; }
.btn.danger { background: #ffffff; color: #000000; border: 2px dashed #000000; }

input, textarea, select {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 9px 12px;
  font-family: var(--font);
  font-size: 0.95rem;
  width: 100%;
}
input:focus, textarea:focus, select:focus { outline: 2px solid #000000; outline-offset: -1px; }

textarea.code-editor {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  min-height: 260px;
  white-space: pre;
  tab-size: 4;
  background: #fafafa;
}

.console {
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  white-space: pre-wrap;
  min-height: 90px;
  max-height: 320px;
  overflow-y: auto;
}
/* Correcto/incorrecto se distingue por el estilo de borde, no por color. */
.console.ok { border: 2px solid #000000; }
.console.error { border: 2px dashed #000000; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius);
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text);
}
.badge.ok { border: 2px solid #000000; font-weight: 700; }
.badge.error { border: 2px dashed #000000; font-weight: 700; }

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 800px) {
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { border-bottom: 2px solid var(--border-strong); font-weight: 700; }

.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; border: 1px solid var(--border-strong); }
.flash.error { border-style: dashed; }
.flash.ok { border-style: solid; }