/* --- Variables de Diseño Técnico --- */
:root {
  --bg-color: #0f172a;        /* Azul oscuro tipo IDE/Terminal */
  --card-bg: #1e293b;         /* Tarjeta contrastante */
  --card-border: #334155;     /* Bordes sutiles */
  --text-main: #f8fafc;       /* Texto blanco suavizado */
  --text-muted: #94a3b8;      /* Texto secundario */
  --accent: #38bdf8;          /* Azul cian técnico */
  --accent-hover: #0284c7;    /* Azul para hover */
  --code-bg: #0f172a;
  
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', monospace;
}

/* --- Reseteo Básico --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  padding-bottom: 40px;
}

.contenedor {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Header / Hero --- */
.hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 40px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: rgba(56, 189, 248, 0.1);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-top: 15px;
  letter-spacing: -0.02em;
}

.subtitulo {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-top: 10px;
}

/* --- Secciones y Grids --- */
h2 {
  font-size: 1.5rem;
  margin-bottom: 5px;
}

.descripcion-seccion {
  color: var(--text-muted);
  margin-bottom: 30px;
}

code {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.grid-herramientas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

/* --- Tarjetas (Cards) --- */
.tarjeta-herramienta {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.tarjeta-herramienta:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.tarjeta-header {
  margin-bottom: 15px;
}

.tarjeta-header h3 {
  font-size: 1.2rem;
  color: var(--text-main);
  margin-bottom: 5px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(56, 189, 248, 0.05);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
}

.tarjeta-herramienta p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* --- Botones --- */
.btn {
  display: inline-block;
  text-align: center;
  background-color: var(--accent);
  color: #0f172a;
  font-weight: 600;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: background-color 0.2s ease;
}

/* --- Botón Cafecito Resaltado --- */
a.btn-cafecito, 
.btn-cafecito {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;
  
  /* Color de fondo naranja/dorado súper visible */
  background-color: #f59e0b !important; 
  color: #0f172a !important; /* Texto oscuro para máximo contraste */
  
  font-weight: 700 !important;
  font-size: 1rem !important;
  text-decoration: none !important; /* Quita el subrayado feo */
  
  padding: 12px 24px !important;
  border-radius: 8px !important;
  border: none !important;
  
  /* Sombra sutil para darle efecto 3D/relieve */
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4) !important;
  transition: all 0.2s ease-in-out !important;
  margin-top: 15px;
}

/* Efecto al pasar el cursor */
a.btn-cafecito:hover, 
.btn-cafecito:hover {
  background-color: #fbbf24 !important; /* Más brillante en hover */
  color: #000000 !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.6) !important;
}

/* Para que el ícono de la taza también sea oscuro */
.btn-cafecito svg,
.icono-cafe {
  stroke: #0f172a !important;
}

.btn:hover {
  background-color: var(--accent-hover);
  color: #ffffff;
}

.btn-secundario {
  display: inline-block;
  border: 1px solid var(--card-border);
  color: var(--text-main);
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.btn-secundario:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Footer --- */
.footer {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid var(--card-border);
}

.footer-contenido {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer h4 {
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* --- Estilos para Formularios y Herramientas --- */
input[type="text"] {
  background-color: var(--code-bg);
  color: var(--text-main);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

.input-corto {
  width: 50px;
  text-align: center;
}

.input-largo {
  width: 140px;
}

.grupo-campo {
  margin-bottom: 12px;
}

hr {
  border: 0;
  border-top: 1px solid var(--card-border);
  margin: 15px 0;
}

.resultado {
  margin-top: 15px;
  padding: 12px;
  background-color: var(--code-bg);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  font-family: var(--font-mono);
  color: var(--accent);
}

.donacion-accion img {
  transition: transform 0.3s ease, filter 0.3s ease;
}

.donacion-accion img:hover {
  transform: translateY(-3px) scale(1.05);
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}