/* =========================
   Base + variables
========================= */
:root{
  --bg: #f4f6f9;
  --text: #1e2a38;
  --muted: #666;
  --card: #ffffff;
  --shadow: 0 6px 18px rgba(0,0,0,0.05);
  --radius: 16px;
  --gap: 20px;

  --c1: #ff4d5a;
  --c2: #1ec7b6;
}

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

html, body{
  width: 100%;
  overflow-x: hidden; /* evita “bailes” horizontales en móvil */
}

body{
  background: var(--bg);
  color: var(--text);
}

/* =========================
   Layout container
========================= */
.container{
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* =========================
   Banner
========================= */
.dev-banner{
  background: linear-gradient(90deg, var(--c1), var(--c2));
  color: #fff;
  text-align: center;
  padding: 8px;
  font-size: 14px;
  line-height: 1.2;
}

/* =========================
   Header
========================= */
header{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap; /* clave para móvil */
}

.logo{
  font-size: 28px;
  font-weight: 700;
  color: var(--c1);
  line-height: 1.1;
}

.logo span{
  color: var(--c2);
}

/* input responsive: nunca forzar 350px en móvil */
header input{
  width: min(350px, 100%);
  flex: 1 1 280px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #ccc;
  outline: none;
}

header input:focus{
  border-color: rgba(30,199,182,0.6);
  box-shadow: 0 0 0 3px rgba(30,199,182,0.15);
}

/* =========================
   Hero
========================= */
.hero{
  text-align: center;
  margin-top: 20px;
}

.hero h1{
  margin-bottom: 10px;
}

/* =========================
   Filters
========================= */
.filters{
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap; /* permite “saltos” en móvil */
}

.filters button{
  padding: 8px 16px;
  border-radius: 20px;
  border: none;
  background: #e3e7ec;
  cursor: pointer;
  white-space: nowrap;
}

/* =========================
   Main layout
========================= */
.layout{
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  margin-top: 20px;
}

/* =========================
   Feed + cards
========================= */
.feed{
  display: grid;
  gap: var(--gap);
}

.card{
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* evita desbordes en títulos/textos largos */
.card, .widget, .completed-card{
  overflow-wrap: anywhere;
  word-break: break-word;
}

.card-header{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap; /* en móvil apila el tag sin romper */
}

.level{
  background: var(--c2);
  color: #fff;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
}

.level.hard{ background: var(--c1); }
.level.social{ background: #ffaa00; }
.level.adventure{ background: #6a5acd; }

.details{
  font-size: 14px;
  color: var(--muted);
  margin: 10px 0;
  line-height: 1.4;
}

.attendees{
  font-weight: 700;
  margin-bottom: 10px;
}

.join-btn{
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(90deg, var(--c1), var(--c2));
  color: #fff;
  font-size: 16px;
  opacity: 0.6;
  cursor: not-allowed;
}

/* =========================
   Sidebar + widgets
========================= */
.sidebar{
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.widget{
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.widget ul{
  list-style: none;
  padding-left: 0;
}

/* =========================
   Completed
========================= */
.completed{
  margin-top: 40px;
}

.completed-card{
  background: #eef2f7;
  padding: 15px;
  border-radius: 12px;
  margin-bottom: 10px;
}

/* =========================
   Footer
========================= */
footer{
  text-align: center;
  padding: 30px 0;
  font-size: 13px;
  color: #888;
}

/* =========================
   Responsive
========================= */

/* tablets */
@media (max-width: 900px){
  .container{
    padding: 16px;
  }

  .layout{
    grid-template-columns: 1fr;
    gap: 20px;
  }

  header{
    align-items: stretch;
  }

  header input{
    flex: 1 1 100%;
  }
}

/* phones */
@media (max-width: 600px){
  .container{
    padding: 12px;
  }

  .logo{
    font-size: 24px;
  }

  .dev-banner{
    font-size: 13px;
  }

  .card, .widget{
    padding: 16px;
    border-radius: 14px;
  }

  .join-btn{
    font-size: 15px;
  }

  .filters{
    justify-content: flex-start; /* más natural en móvil */
  }

  .filters button{
    padding: 8px 14px;
  }
}

/* very small phones */
@media (max-width: 360px){
  header input{
    padding: 9px 10px;
  }

  .level{
    font-size: 12px;
    padding: 4px 8px;
  }
}