/* ============================================================
   ServoGym Socios — PWA (tema oscuro, app-first)
   ============================================================ */
:root {
  --ink: #0e0f0c;
  --panel: #171813;
  --panel-2: #1e201a;
  --bone: #f1efe8;
  --volt: #00ccff;
  --grey: #8b8b83;
  --line: rgba(241, 239, 232, .12);
  --font-display: 'Big Shoulders Display', Impact, sans-serif;
  --font-body: 'Archivo', Helvetica, Arial, sans-serif;
  --tabbar-h: calc(3.9rem + env(safe-area-inset-bottom));
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: var(--font-body);
  background: var(--ink); color: var(--bone);
  font-size: .95rem; line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: var(--tabbar-h);
}
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select { font: inherit; }
.muted { color: var(--grey); }

/* ---------- Barra superior ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: baseline; gap: .7rem;
  padding: calc(.9rem + env(safe-area-inset-top)) 1.1rem .9rem;
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar__logo {
  font-family: var(--font-display); font-weight: 800;
  font-size: 1.45rem; text-transform: uppercase; line-height: 1;
}
.topbar__logo em { font-style: normal; color: var(--volt); }
.topbar__sub { font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--grey); }

/* ---------- Contenido ---------- */
.view { padding: 1.1rem 1.1rem 1.6rem; max-width: 640px; margin: 0 auto; }
.view h2 {
  font-family: var(--font-display); font-weight: 800;
  font-size: 1.9rem; text-transform: uppercase; line-height: .95;
  margin-bottom: 1rem;
}
.section-label {
  display: block; font-size: .66rem; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase; color: var(--grey);
  margin: 1.4rem 0 .7rem;
}

/* ---------- Chips ---------- */
.chips { display: flex; gap: .45rem; overflow-x: auto; padding-bottom: .35rem; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: 0 0 auto;
  border: 1px solid rgba(241, 239, 232, .25); border-radius: 100px;
  padding: .48rem 1rem;
  font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--bone);
  transition: background .25s, color .25s, border-color .25s;
}
.chip.is-active { background: var(--volt); color: var(--ink); border-color: var(--volt); }

/* ---------- Login ---------- */
.auth { padding-top: 2.5rem; }
.auth h1 {
  font-family: var(--font-display); font-weight: 800;
  font-size: 2.6rem; text-transform: uppercase; line-height: .92;
  margin-bottom: 1.6rem;
}
.auth h1 em { font-style: normal; color: var(--volt); }
.auth form { display: flex; flex-direction: column; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field label { font-size: .66rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--grey); }
.field input, .field select {
  padding: .95rem 1rem; border-radius: 10px;
  background: var(--panel); color: var(--bone);
  border: 1px solid rgba(241, 239, 232, .18);
}
.field input:focus, .field select:focus { outline: none; border-color: var(--volt); }
.btn {
  display: flex; align-items: center; justify-content: center;
  padding: 1rem 1.4rem; border-radius: 100px;
  background: var(--volt); color: var(--ink);
  font-weight: 700; font-size: .8rem; letter-spacing: .1em; text-transform: uppercase;
  transition: transform .2s, opacity .2s;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .4; }
.btn--ghost { background: transparent; color: var(--bone); border: 1px solid rgba(241, 239, 232, .3); }
.auth-error { color: #ff7a6e; font-size: .8rem; display: none; }
.auth-error.show { display: block; }
.auth-toggle { margin-top: 1.2rem; text-align: center; font-size: .82rem; color: var(--grey); }
.auth-toggle b { color: var(--volt); cursor: pointer; }

/* ---------- Tarjetas / filas ---------- */
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.1rem 1.2rem; margin-bottom: .8rem;
}
.class-item {
  display: grid; grid-template-columns: 3.4rem 1fr auto;
  gap: .9rem; align-items: center;
  padding: .95rem 0;
  border-bottom: 1px solid var(--line);
}
.class-item__time { font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; }
.class-item__name { font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; text-transform: uppercase; line-height: 1; }
.class-item__sub { font-size: .7rem; color: var(--grey); margin-top: .2rem; }
.spots { font-size: .66rem; color: var(--grey); }
.spots i { font-style: normal; color: var(--volt); }
.pill {
  display: inline-block; padding: .45rem .95rem; border-radius: 100px;
  font-size: .66rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  border: 1px solid rgba(241, 239, 232, .3);
}
.pill--solid { background: var(--volt); color: var(--ink); border-color: var(--volt); }
.pill--muted { opacity: .45; }
.badge-mini {
  display: inline-block; padding: .18rem .55rem; border-radius: 100px;
  font-size: .56rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
}
.badge-mini--ok { background: var(--volt); color: var(--ink); }
.badge-mini--wl { background: rgba(241, 239, 232, .16); }
.badge-mini--credit { border: 1px solid var(--volt); color: var(--volt); }

/* ---------- Calendario semanal ---------- */
.cal-wrap { overflow-x: auto; margin: 0 -1.1rem; padding: 0 1.1rem; }
.cal {
  display: grid; grid-template-columns: 3rem repeat(7, minmax(88px, 1fr));
  gap: 3px; min-width: 700px;
}
.cal__head {
  font-size: .62rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--grey); text-align: center; padding: .45rem .2rem;
  position: sticky; top: 0;
}
.cal__head.is-today { color: var(--volt); }
.cal__time {
  font-family: var(--font-display); font-weight: 800; font-size: .85rem;
  color: var(--grey); display: flex; align-items: flex-start; justify-content: center;
  padding-top: .5rem;
}
.cal__cell { min-height: 3.4rem; border-radius: 8px; background: var(--panel); padding: 3px; display: flex; flex-direction: column; gap: 3px; }
.cal__slot {
  border-radius: 6px; padding: .3rem .4rem;
  background: var(--panel-2);
  font-size: .62rem; line-height: 1.25; text-align: left;
  border-left: 3px solid rgba(241, 239, 232, .25);
}
.cal__slot b { display: block; font-family: var(--font-display); font-size: .78rem; text-transform: uppercase; font-weight: 800; }
.cal__slot.is-mine { border-left-color: var(--volt); background: rgba(0, 204, 255, .14); }
.cal__slot.is-full { opacity: .45; }
.cal__slot.is-past { opacity: .25; pointer-events: none; }
.cal__slot small { color: var(--grey); }

/* ---------- Mis clases ---------- */
.bk {
  display: flex; justify-content: space-between; align-items: center; gap: .8rem;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 1rem 1.1rem; margin-bottom: .7rem;
}
.bk__name { font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; text-transform: uppercase; line-height: 1; }
.bk__meta { font-size: .7rem; color: var(--grey); margin-top: .25rem; }
.bk__cancel { font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; text-decoration: underline; text-underline-offset: 3px; color: var(--grey); }

/* ---------- Créditos ---------- */
.credits-card { display: flex; align-items: center; gap: 1rem; }
.credits-card__num { font-family: var(--font-display); font-weight: 800; font-size: 2.6rem; color: var(--volt); line-height: 1; }
.credits-card__label { font-size: .72rem; color: var(--grey); }
.credits-bar { flex: 1; height: 6px; border-radius: 4px; background: rgba(241, 239, 232, .14); overflow: hidden; }
.credits-bar i { display: block; height: 100%; background: var(--volt); border-radius: 4px; }

/* ---------- Tab bar ---------- */
.tabbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 30;
  display: flex;
  background: color-mix(in srgb, var(--ink) 90%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar button {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: .15rem;
  padding: .6rem 0 .55rem;
  font-size: .6rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--grey);
}
.tabbar button.is-active { color: var(--volt); }
.tabbar__icon { font-size: 1.05rem; line-height: 1; }

/* ---------- Bottom sheet ---------- */
.sheet { position: fixed; inset: 0; z-index: 60; }
.sheet__bg { position: absolute; inset: 0; background: rgba(0, 0, 0, .55); backdrop-filter: blur(3px); }
.sheet__card {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: var(--panel); border-radius: 20px 20px 0 0;
  padding: 1.4rem 1.3rem calc(1.6rem + env(safe-area-inset-bottom));
  animation: sheet-up .3s cubic-bezier(.22, 1, .36, 1);
  max-width: 640px; margin: 0 auto;
}
@keyframes sheet-up { from { transform: translateY(40%); opacity: 0; } to { transform: none; opacity: 1; } }
.sheet__title { font-family: var(--font-display); font-weight: 800; font-size: 1.9rem; text-transform: uppercase; line-height: .95; }
.sheet__meta { font-size: .78rem; color: var(--grey); margin: .5rem 0 1.2rem; }
.sheet__meta b { color: var(--volt); }
.sheet .btn { width: 100%; margin-top: .5rem; }

/* ---------- Toast / offline ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(var(--tabbar-h) + .8rem);
  transform: translate(-50%, 12px); z-index: 70;
  max-width: min(90vw, 26rem); width: max-content;
  background: var(--bone); color: var(--ink);
  border-radius: 10px; padding: .8rem 1.1rem;
  font-size: .8rem; font-weight: 500;
  opacity: 0; pointer-events: none;
  transition: opacity .3s, transform .3s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.offline {
  position: fixed; top: 0; left: 0; right: 0; z-index: 80;
  background: #b3261e; color: #fff; text-align: center;
  font-size: .7rem; padding: .35rem;
}

/* ---------- Chip flotante de instalación ---------- */
.install-chip {
  position: fixed; top: calc(3.6rem + env(safe-area-inset-top)); right: .9rem; z-index: 40;
  display: flex; align-items: center; gap: .5rem;
  background: var(--volt); color: var(--ink);
  border-radius: 100px; padding: .55rem 1rem;
  font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .45);
  animation: chip-in .5s cubic-bezier(.22, 1, .36, 1);
}
@keyframes chip-in { from { transform: translateY(-8px); opacity: 0; } to { transform: none; opacity: 1; } }
.install-chip__close { margin-left: .2rem; font-size: .9rem; opacity: .6; }

.ios-steps { list-style: none; margin: 1rem 0; display: flex; flex-direction: column; gap: .8rem; }
.ios-steps li { display: flex; gap: .8rem; align-items: baseline; font-size: .88rem; }
.ios-steps b {
  flex: 0 0 1.5rem; height: 1.5rem; border-radius: 50%;
  background: var(--volt); color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .75rem;
}

/* ---------- Perfil ---------- */
.profile-row { display: flex; justify-content: space-between; align-items: center; padding: .9rem 0; border-bottom: 1px solid var(--line); font-size: .85rem; }
.profile-row span:first-child { color: var(--grey); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }
.profile-row select { background: var(--panel); color: var(--bone); border: 1px solid rgba(241,239,232,.2); border-radius: 8px; padding: .4rem .6rem; }
.install-hint { margin-top: 1.4rem; }