/* ── RESET & BASE ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --amarillo: #facc15;
  --amarillo-dark: #eab308;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --green:  #22c55e;
  --red:    #ef4444;
  --blue:   #3b82f6;
  --white:  #ffffff;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--slate-900);
  min-height: 100vh;
  color: var(--slate-900);
}

/* ── TABS ─────────────────────────────────────────────────────────────────── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── MODAL ────────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 50;
  align-items: flex-end;
  justify-content: center;
}
.modal-overlay.active { display: flex; }
.modal-box {
  background: var(--white);
  border-radius: 1.5rem 1.5rem 0 0;
  width: 100%;
  max-width: 448px;
  padding: 1.5rem;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--slate-400);
  cursor: pointer;
  line-height: 1;
}

/* ── BADGES ───────────────────────────────────────────────────────────────── */
.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 9999px; font-size: 0.7rem; font-weight: 700; }
.badge-green  { background: #dcfce7; color: #15803d; }
.badge-red    { background: #fee2e2; color: #b91c1c; }
.badge-yellow { background: #fef9c3; color: #92400e; }

.pagado   { background: var(--green); color: white; }
.pendiente{ background: var(--red);   color: white; }

/* ── BOTONES ──────────────────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; border: none; cursor: pointer; font-family: inherit; font-weight: 700; border-radius: 0.75rem; padding: 0.75rem 1rem; transition: transform 0.1s; }
.btn:active { transform: scale(0.97); }
.btn-amarillo { background: var(--amarillo); color: var(--slate-900); }
.btn-green    { background: var(--green);    color: white; }
.btn-slate    { background: var(--slate-100); color: var(--slate-700); }
.btn-red      { background: var(--red);      color: white; font-size: 0.75rem; padding: 0.25rem 0.5rem; }
.btn-blue     { background: var(--blue);     color: white; font-size: 0.75rem; padding: 0.25rem 0.5rem; }
.btn-icon     { background: var(--green);    color: white; font-size: 0.75rem; padding: 0.25rem 0.5rem; }
.btn-full     { width: 100%; }

/* ── INPUTS ───────────────────────────────────────────────────────────────── */
input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
  border: none;
  outline: none;
  background: var(--slate-50);
  border-radius: 0.75rem;
  padding: 0.75rem;
  width: 100%;
  color: var(--slate-900);
}
input:focus, select:focus, textarea:focus {
  box-shadow: 0 0 0 2px var(--amarillo);
}
label { font-size: 0.7rem; font-weight: 700; color: var(--slate-400); text-transform: uppercase; display: block; margin-bottom: 0.25rem; }

/* ── CARDS ────────────────────────────────────────────────────────────────── */
.card { background: white; border-radius: 1.5rem; padding: 1.25rem; box-shadow: 0 4px 24px rgba(0,0,0,0.1); }
.card-dark { background: var(--slate-800); border: 1px solid var(--slate-700); border-radius: 1.5rem; padding: 1.25rem; }

/* ── SELECTOR DE GRUPO ────────────────────────────────────────────────────── */
.grupo-selector {
  background: var(--slate-800);
  border: 1px solid var(--slate-700);
  border-radius: 0.75rem;
  padding: 0.6rem 0.75rem;
  color: white;
  width: 100%;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
}

/* ── MIEMBRO ROW ──────────────────────────────────────────────────────────── */
.miembro-row {
  background: rgba(51,65,85,0.5);
  border: 1px solid var(--slate-600);
  border-radius: 0.75rem;
  padding: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.miembro-avatar {
  width: 2.25rem; height: 2.25rem;
  border-radius: 9999px;
  background: var(--amarillo);
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 0.875rem;
  color: var(--slate-900);
  flex-shrink: 0;
}
.miembro-acciones { display: flex; flex-direction: column; gap: 0.25rem; flex-shrink: 0; }

/* ── VIAJE CARD ───────────────────────────────────────────────────────────── */
.viaje-card { background: white; border-radius: 1.25rem; padding: 1rem; box-shadow: 0 2px 12px rgba(0,0,0,0.08); margin-bottom: 0.75rem; }
.pagador-box { background: var(--slate-50); border-radius: 0.75rem; padding: 0.5rem 0.75rem; font-size: 0.75rem; margin-bottom: 0.5rem; }

/* ── LAYOUT ───────────────────────────────────────────────────────────────── */
.app-wrap { max-width: 448px; margin: 0 auto; min-height: 100vh; display: flex; flex-direction: column; }
.tabs-bar { display: flex; gap: 0.5rem; padding: 0 1rem 0.75rem; overflow-x: auto; }
.tabs-bar::-webkit-scrollbar { display: none; }
.tab-btn {
  background: var(--slate-800); color: white;
  border: none; cursor: pointer; font-family: inherit; font-weight: 700;
  font-size: 0.8rem; padding: 0.5rem 1rem; border-radius: 9999px; white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.tab-btn.active { background: var(--amarillo); color: var(--slate-900); }

/* ── HEADER ───────────────────────────────────────────────────────────────── */
.app-header {
  padding: 1.25rem 1.25rem 0.75rem;
  display: flex; justify-content: space-between; align-items: center;
  color: white;
}
.app-logo { font-size: 1.2rem; font-weight: 900; letter-spacing: -0.05em; }
.app-logo span { color: var(--amarillo); }
.app-sub { font-size: 0.7rem; opacity: 0.6; }
.header-btn {
  background: var(--slate-800); border: 1px solid var(--slate-700);
  border-radius: 9999px; padding: 0.5rem; cursor: pointer;
  color: var(--amarillo); font-size: 1rem; display: flex; align-items: center;
}

/* ── BANNER ACTIVACION ────────────────────────────────────────────────────── */
.banner-activacion {
  margin: 0 1rem 0.75rem;
  background: var(--red);
  color: white;
  padding: 0.6rem 1rem;
  border-radius: 1rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
}
.banner-activacion button { background: none; border: none; color: white; text-decoration: underline; cursor: pointer; font-weight: 700; }

/* ── FOOTER ───────────────────────────────────────────────────────────────── */
.app-footer { margin-top: auto; padding: 1.5rem; text-align: center; color: var(--slate-600); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; }

/* ── GRUPO CARD EN LISTA ──────────────────────────────────────────────────── */
.grupo-card {
  background: white; border-radius: 1.25rem; padding: 1rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08); margin-bottom: 0.75rem;
  cursor: pointer; transition: box-shadow 0.15s;
}
.grupo-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.grupo-card.selected { border: 2px solid var(--amarillo); }
.grupo-card-header { display: flex; justify-content: space-between; align-items: center; }
.grupo-card-acciones { display: flex; gap: 0.4rem; }
.grupo-miembros-lista { margin-top: 0.75rem; border-top: 1px solid var(--slate-100); padding-top: 0.75rem; }

/* ── EMPTY STATE ──────────────────────────────────────────────────────────── */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--slate-400); }
.empty-state .emoji { font-size: 3rem; margin-bottom: 0.75rem; }

/* ── CHECKBOX ─────────────────────────────────────────────────────────────── */
.pax-label {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.75rem; background: var(--slate-50); border-radius: 0.75rem; cursor: pointer;
}
.pax-label input[type=checkbox] { width: 1.25rem; height: 1.25rem; accent-color: var(--amarillo); }