:root {
  --max-width: 1000px;
  --gap: 16px;
  --accent: #b86deb;
  --muted: #f3f6fb;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: #b1b8fa;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap);
  color: #0f172a;
}

/* Header - usar Flexbox */
.site-header {
  width: 100%;
  max-width: var(--max-width);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: #35085f;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

/* logo + title */
.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo_1 {
  width: 75px;
  height: 75px;
  object-fit: cover;
  border-radius: 8px;
}

.logo {
  width: 200px;   /* ancho */
  height: auto;   /* auto mantiene la proporción */
}

/* search ocupa el espacio disponible (flex) */
.header-search { flex: 1; }
#search {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid #121416;
  background: #e2e2e2;
}

/* nav (fila) */
.main-nav {
  display: flex;
  gap: 8px;
}
.nav-btn {
  border: none;
  background: transparent;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}
.nav-btn[aria-pressed="true"] {
  background: var(--accent);
  color: rgb(228, 228, 228);
}
nav {
  background: #463b85;
  padding: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav button {
  margin: 5px;
  padding: 8px 12px;
  border: wheat;
  background: #a131fc;
  color: rgb(255, 255, 255);
  border-radius: 5px;
  cursor: pointer;
}

nav button:hover {
  background: #7a36b9;
}

/* Main layout: usar Grid para sidebar + contenido */
.main-grid {
  width: 100%;
  max-width: var(--max-width);
  padding: 18px;
  display: grid;
  grid-template-columns: 260px 1fr; /* sidebar + contenido */
  gap: var(--gap);
}

/* Paneles */
.left-panel, .content-panel {
  background: #ffffff;
  border-radius: 10px;
  padding: 14px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

/* Left panel (perfil breve) */
.left-panel img.avatar {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 10px;
}
.left-panel h2 { margin: 8px 0; font-size: 1.1rem; }

/* Photos: Grid */
.photos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}
.photos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3 columnas */
  gap: 10px; /* espacio entre fotos */
  margin-top: 15px;
}

.photos-grid img {
  width: 100%;
  height: auto;
  border-radius: 8px; /* esquinas redondeadas */
  object-fit: cover;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1); /* sombra ligera */
}


/* Boxes: Flexbox con wrap */
.boxes {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.box {
  flex: 1 1 140px;
  padding: 12px;
  border-radius: 8px;
  background: var(--muted);
  text-align: center;
}

.centro-total {
  display: flex;
  justify-content: center;  /* centra horizontal */
  align-items: center;      /* centra vertical */
  height: 100vh;            /* ocupa toda la pantalla */
}


/* Footer */
.site-footer {
  width: 100%;
  max-width: var(--max-width);
  text-align: center;
  padding: 8px 0;
  color: #6b7280;
}

/* Responsive: en pantallas pequeñas, pasar a 1 columna */
@media (max-width: 720px) {
  .main-grid { grid-template-columns: 1fr; padding: 12px; }
  .header-left .logo { width: 44px; height:44px; }
  .main-nav { gap: 6px; font-size: 0.95rem; }
}

/* util */
.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px; overflow: hidden; clip: rect(1px,1px,1px,1px);
  white-space: nowrap;
}


header {
  display: flex;
  align-items: center;
  padding: 10px;
  background: #1877f2;
  color: white;
}

header img {
  margin-right: 10px;
}


section {
  padding: 20px;
}

textarea {
  width: 100%;
  height: 60px;
  resize: none;
  padding: 10px;
  margin-bottom: 10px;
}

.post {
  background: #fff;
  padding: 10px;
  margin: 10px 0;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  .post {
  background-color: #583939; /* Fondo blanco */
  border: 1px solid #3d2d86; /* Borde suave */
  border-radius: 10px;
  padding: 15px;
  margin: 15px 0; /* Espaciado entre posts */
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.post:hover {
  transform: scale(1.01); /* Un poco de zoom al pasar el mouse */
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.post h4 {
  margin: 0;
  font-size: 16px;
  font-weight: bold;
  color: #1877f2; /* Azul estilo Facebook */
}

.post p {
  margin-top: 8px;
  font-size: 14px;
  color: #333;
}

}