@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');
body, html {
  font-family: 'Poppins', sans-serif;
  background: #fafafa;
  margin: 0;
  padding: 0;
}
.app-container {
  max-width: 600px;
  margin: auto;
  background: #fff;
  min-height: 100vh;
  position: relative;
  padding-bottom: 60px; /* espacio para la barra inferior */
}

/* PERFIL */
.profile-header {
  text-align: center;
  margin-top: 20px;
}
.profile-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 3px solid #f05;
}
.text-muted { color: #888 !important; }

/* TARJETAS (tweets) */
.tweet-card {
  border: 1px solid #e1e8ed;
  border-radius: 16px;
  padding: 15px;
  background: #fff;
  margin-bottom: 15px;
  transition: box-shadow 0.3s ease;
}
.tweet-card:hover {
  box-shadow: 0 3px 12px rgba(0,0,0,0.1);
}
.tweet-header {
  display: flex;
  align-items: center;
  gap: 10px;
}
.tweet-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}
.tweet-body { margin-top: 10px; font-size: 15px; }

/* BARRA INFERIOR */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0; right: 0;
  background: #fff;
  border-top: 1px solid #ddd;
  display: flex;
  justify-content: space-around;
  padding: 5px 0;
  box-shadow: 0 -2px 6px rgba(0,0,0,0.05);
}
.nav-btn {
  border: none;
  background: transparent;
  text-align: center;
  flex: 1;
  color: #777;
  font-size: 12px;
}
.nav-btn img {
  width: 24px;
  height: 24px;
  filter: grayscale(100%);
}
.nav-btn.active img {
  filter: none;
}
.nav-btn.active span {
  color: #007bff;
}
.nav-btn:focus { outline: none; }
.profile-banner {
  background: linear-gradient(135deg, #007bff, #6610f2);
  height: 120px;
  border-radius: 0 0 50% 50%;
  margin-bottom: -60px;
}
.avatar-wrapper {
  display: inline-block;
  background: #fff;
  padding: 5px;
  border-radius: 50%;
  border: 3px solid #f05;
}
.stats-container {
  display: flex;
  justify-content: space-around;
  margin: 20px 0;
}
.stat-card {
  text-align: center;
}
.stat-card h5 {
  font-weight: 700;
  color: #007bff;
  margin-bottom: 5px;
}
.stat-card p {
  font-size: 13px;
  color: #888;
  margin: 0;
}
.tweet-card.highlight {
  border-left: 4px solid #007bff;
}
.action-buttons {
  display: flex;
  justify-content: space-around;
  margin: 25px 0 15px 0;
}
.action-buttons .btn {
  border-radius: 25px;
  font-size: 14px;
  padding: 6px 15px;
}