/* ===== Fit — sistema visual premium (mobile-first, oscuro) ===== */
:root {
  --bg: #080b12;
  --bg-2: #0c111c;
  --surface: #111725;
  --surface-2: #161d2c;
  --surface-3: #1f2838;
  --border: #212c40;
  --border-soft: #1a2333;
  --hairline: #ffffff0d;
  --text: #eef2f9;
  --muted: #96a3ba;
  --muted-2: #5c6985;
  --accent: #6a8dff;
  --accent-2: #8e6bff;
  --accent-grad: linear-gradient(135deg, #6a8dff 0%, #8e6bff 100%);
  --accent-soft: #6a8dff1f;
  --kcal: #6a8dff;
  --prot: #ff7e6b;
  --carb: #ffc24b;
  --grasa: #46d6a6;
  --good: #46d6a6;
  --warn: #ffc24b;
  --bad: #ff7e6b;
  --radius: 20px;
  --radius-sm: 13px;
  --shadow: 0 16px 40px -18px #000c, 0 2px 8px -4px #0008;
  --tab-h: 66px;
  --top-h: 50px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bot: env(safe-area-inset-bottom, 0px);
  --ease: cubic-bezier(.22, .8, .26, 1);
  font-size: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; }
html { background: var(--bg); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overscroll-behavior-y: none;
}
/* Resplandor ambiental fijo a la pantalla (no al scroll) — sin cortes */
body::before {
  content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(140% 80% at 50% -18%, #15203a 0%, transparent 70%);
}
::selection { background: var(--accent-soft); }

#app { display: flex; flex-direction: column; min-height: 100dvh; }

/* Topbar */
#topbar {
  position: sticky; top: 0; z-index: 20;
  height: calc(var(--top-h) + var(--safe-top)); padding-top: var(--safe-top);
  display: flex; align-items: center; justify-content: space-between;
  padding-left: 20px; padding-right: 14px;
  background: linear-gradient(180deg, #0a0e17e6, #0a0e17b0);
  backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border-soft);
}
#title { font-weight: 800; letter-spacing: -.02em; font-size: 19px;
  background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.icon-btn {
  background: var(--surface-2); border: 1px solid var(--border); color: var(--muted);
  width: 38px; height: 38px; border-radius: 50%; font-size: 17px; cursor: pointer;
  display: grid; place-items: center; transition: transform .15s var(--ease), color .15s;
}
.icon-btn:active { transform: scale(.9); color: var(--text); }

/* Main + transición de vista */
#main {
  flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: 18px 16px calc(var(--tab-h) + var(--safe-bot) + 22px);
  max-width: 680px; width: 100%; margin: 0 auto;
}
#main.view-anim { animation: viewIn .34s var(--ease); }
@keyframes viewIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.loading { color: var(--muted-2); text-align: center; padding: 60px 0; font-size: 14px; }
.error { color: var(--bad); background: #ff7e6b14; border: 1px solid #ff7e6b3a;
  padding: 14px; border-radius: var(--radius-sm); white-space: pre-wrap; }

/* Tab bar con iconos SVG */
#tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  height: calc(var(--tab-h) + var(--safe-bot)); padding-bottom: var(--safe-bot);
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: linear-gradient(180deg, #0a0e17cc, #080b12f5);
  backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 1px solid var(--border-soft);
}
#tabbar a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  text-decoration: none; color: var(--muted-2); font-size: 10.5px; font-weight: 600;
  letter-spacing: .01em; transition: color .18s var(--ease);
}
#tabbar a .ti { width: 25px; height: 25px; display: grid; place-items: center; transition: transform .2s var(--ease); }
#tabbar a .ti svg { width: 25px; height: 25px; stroke: currentColor; stroke-width: 1.9; fill: none; }
#tabbar a.active { color: var(--text); }
#tabbar a.active .ti { color: var(--accent); transform: translateY(-1px); filter: drop-shadow(0 4px 10px #6a8dff66); }

/* Headings */
.page-title { font-size: 29px; font-weight: 820; letter-spacing: -.025em; margin: 4px 0 2px; }
.page-sub { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.section-title { font-size: 12px; font-weight: 700; color: var(--muted-2); text-transform: uppercase;
  letter-spacing: .08em; margin: 26px 4px 11px; }

/* Cards */
.card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-2) 140%);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 17px; margin-bottom: 13px; box-shadow: var(--shadow), inset 0 1px 0 var(--hairline);
}
.card.tap { cursor: pointer; transition: transform .12s var(--ease), border-color .2s; }
.card.tap:active { transform: scale(.98); border-color: var(--accent); }
.row { display: flex; align-items: center; gap: 12px; }
.row.between { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.muted { color: var(--muted); } .tiny { font-size: 12px; } .nowrap { white-space: nowrap; }

/* Hero: anillo de calorías */
.hero { display: flex; flex-direction: column; align-items: center; padding: 6px 0 2px; }
.ring { position: relative; width: 168px; height: 168px; margin: 2px auto 4px; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring .ring-track { fill: none; stroke: var(--surface-3); stroke-width: 11; }
.ring .ring-fill { fill: none; stroke-width: 11; stroke-linecap: round;
  transition: stroke-dashoffset .8s var(--ease); }
.ring .center { position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; }
.ring .center .big { font-size: 34px; font-weight: 820; letter-spacing: -.03em; line-height: 1; }
.ring .center .sub { font-size: 12px; color: var(--muted); margin-top: 5px; font-weight: 600; }
.ring .center .tag { font-size: 10.5px; color: var(--muted-2); margin-top: 2px;
  text-transform: uppercase; letter-spacing: .08em; }

/* Barras de macros */
.mbars { display: flex; flex-direction: column; gap: 13px; width: 100%; margin-top: 16px; }
.mbar .mhead { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 7px; }
.mbar .ml { font-size: 13px; font-weight: 600; color: var(--muted); }
.mbar .mv { font-size: 14px; font-weight: 800; letter-spacing: -.01em; }
.mbar .mv small { font-size: 11.5px; font-weight: 600; color: var(--muted-2); }
.bar { height: 8px; border-radius: 99px; background: var(--surface-3); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 99px; width: 0; transition: width .7s var(--ease); }
.mbar.prot .mv { color: var(--prot); } .bar.prot > i { background: linear-gradient(90deg, #ff7e6b, #ff9d6b); }
.mbar.carb .mv { color: var(--carb); } .bar.carb > i { background: linear-gradient(90deg, #ffc24b, #ffd778); }
.mbar.grasa .mv { color: var(--grasa); } .bar.grasa > i { background: linear-gradient(90deg, #46d6a6, #5fe0c0); }
.bar.kcal > i { background: var(--accent-grad); }
.over > i { background: linear-gradient(90deg, #ff7e6b, #ff5a6b) !important; }

/* Legacy macro card (se mantiene para Nutrición) */
.macro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
.macro { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 13px; }
.macro .top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 9px; }
.macro .label { font-size: 11.5px; font-weight: 700; color: var(--muted-2); text-transform: uppercase; letter-spacing: .06em; }
.macro .val { font-size: 20px; font-weight: 800; letter-spacing: -.02em; }
.macro .val small { font-size: 12px; font-weight: 600; color: var(--muted-2); }
.macro .rem { font-size: 11px; color: var(--muted-2); margin-top: 7px; }
.macro.kcal .val { color: var(--kcal); } .macro.prot .val { color: var(--prot); }
.macro.carb .val { color: var(--carb); } .macro.grasa .val { color: var(--grasa); }

/* Chips / hábitos */
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--muted);
  padding: 10px 14px; border-radius: 99px; font-size: 14px; font-weight: 600; user-select: none;
  transition: transform .12s var(--ease), background .2s, border-color .2s, color .2s;
}
.chip .ic { font-size: 15px; }
.chip.on { background: linear-gradient(135deg, #6a8dff45, #8e6bff45); border-color: var(--accent); color: #fff;
  box-shadow: 0 0 0 1px #6a8dff66, 0 6px 20px -6px #6a8dffb0; }
.chip.on .ic { color: #fff; }
.chip:active { transform: scale(.95); }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent-grad); color: #fff; border: none; border-radius: 14px;
  padding: 14px 16px; font-size: 15px; font-weight: 700; letter-spacing: -.01em; cursor: pointer; width: 100%;
  box-shadow: 0 10px 24px -12px #6a8dffcc; transition: transform .12s var(--ease), filter .2s, box-shadow .2s;
}
.btn:active { transform: scale(.98); filter: brightness(1.08); }
.btn.ghost { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.btn.sm { width: auto; padding: 9px 14px; font-size: 13px; border-radius: 11px; box-shadow: none; }
.btn.danger { background: #ff7e6b1c; color: var(--bad); border: 1px solid #ff7e6b3a; box-shadow: none; }
.btn-row { display: flex; gap: 11px; margin-top: 6px; }

/* Inputs */
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 13px; width: 100%;
  transition: border-color .15s, box-shadow .15s; appearance: none; -webkit-appearance: none;
}
select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: right 15px center, right 10px center; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 30px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input[type=number] { -moz-appearance: textfield; }
.field { display: block; margin-bottom: 18px; }
.field > span { display: block; font-size: 11.5px; font-weight: 700; color: var(--muted-2);
  margin-bottom: 10px; text-transform: uppercase; letter-spacing: .05em; }
.form-hint { font-size: 12px; color: var(--muted-2); margin: -6px 2px 14px; line-height: 1.45; }

/* Listas */
.list { display: flex; flex-direction: column; gap: 9px; }
.item {
  display: flex; align-items: center; gap: 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 15px 16px;
  box-shadow: inset 0 1px 0 var(--hairline);
}
.item .grow > div + div { margin-top: 3px; }
.item .t { font-weight: 600; }
.badge { font-size: 11px; font-weight: 700; padding: 4px 9px; border-radius: 99px;
  background: var(--surface-3); color: var(--muted); white-space: nowrap; }
.badge.accent { background: var(--accent-soft); color: var(--accent); }
.star { font-size: 20px; color: var(--muted-2); cursor: pointer; line-height: 1; user-select: none;
  transition: color .15s, transform .12s var(--ease); }
.star.on { color: #ffc24b; }
.star:active { transform: scale(1.25); }

/* Acciones del topbar + iconos de hábito */
.top-actions { display: flex; gap: 10px; align-items: center; }
.icon-btn svg { display: block; }
.chip .ic { display: inline-flex; align-items: center; }
.chip .ic svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; display: block; }
.hicon { display: inline-flex; color: var(--accent); }
.hicon svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.item.off { opacity: .55; }
/* Selectores de icono y frecuencia (Ajustes) */
.icon-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.icon-pick { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 11px 0; color: var(--muted); cursor: pointer; display: flex; align-items: center; justify-content: center; }
.icon-pick svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.icon-pick.on { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }
.freq-row { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.freq-pick { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 11px 0; color: var(--muted); font-weight: 700; font-size: 14px; cursor: pointer; }
.freq-pick.on { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }
/* Fases / objetivos */
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; }
.preset-pick { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 9px 13px; color: var(--muted); font-weight: 600; font-size: 13px; cursor: pointer; }
.preset-pick:active { transform: scale(.96); }
.radio { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--muted-2); flex-shrink: 0;
  transition: border-color .15s; }
.radio.on { border-color: var(--accent);
  background: radial-gradient(circle at center, var(--accent) 0 5px, transparent 6px); }
.active-fase { border-color: var(--accent) !important;
  box-shadow: 0 0 0 1px #6a8dff55, 0 6px 20px -8px #6a8dff80; }
/* Mapa de constancia (heatmap) */
.heatmap { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 1fr); gap: 4px; }
.hcell { aspect-ratio: 1; border-radius: 4px; background: var(--surface-3); }
.hcell.on { background: var(--accent); box-shadow: 0 0 8px -2px #6a8dff80; }
.hcell.future { opacity: .22; }

/* Sub-tabs (segment control) */
.subtabs { display: flex; gap: 4px; background: var(--surface-2); border: 1px solid var(--border);
  padding: 4px; border-radius: 13px; margin-bottom: 18px; }
.subtabs button { flex: 1; background: transparent; border: none; color: var(--muted);
  padding: 10px 6px; border-radius: 10px; font-weight: 700; font-size: 13px; cursor: pointer;
  transition: background .2s var(--ease), color .2s; }
.subtabs button.on { background: var(--surface-3); color: var(--text); box-shadow: 0 2px 8px -4px #000a; }

/* Registro de series */
.sets { display: flex; flex-direction: column; gap: 7px; margin-top: 11px; }
.set-row { display: grid; grid-template-columns: 26px 1fr 1fr 1fr; gap: 7px; align-items: center; }
.set-row .n { color: var(--muted-2); font-weight: 700; text-align: center; font-size: 13px; }
.set-row input { padding: 11px 8px; text-align: center; }
.set-head { display: grid; grid-template-columns: 26px 1fr 1fr 1fr; gap: 7px;
  font-size: 10.5px; color: var(--muted-2); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 0 2px; }
.last-line { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.hint { font-size: 12.5px; font-weight: 700; color: var(--good); margin-top: 10px;
  background: #46d6a614; border: 1px solid #46d6a636; padding: 9px 11px; border-radius: 10px; display: none; }
.hint.show { display: block; animation: viewIn .3s var(--ease); }

.ex-block { background: linear-gradient(180deg, var(--surface), var(--bg-2) 140%); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 15px; margin-bottom: 12px; box-shadow: inset 0 1px 0 var(--hairline); }
.ex-block h3 { margin: 0; font-size: 16px; letter-spacing: -.01em; }
.ex-block .meta { color: var(--muted-2); font-size: 12px; margin-top: 2px; }

.fab-save { position: sticky; bottom: 12px; margin-top: 18px; z-index: 5; }
.fab-save .btn { box-shadow: 0 14px 30px -10px #6a8dffaa; }

.empty { text-align: center; color: var(--muted-2); padding: 40px 12px; line-height: 1.5; }
.empty .big { font-size: 38px; margin-bottom: 10px; }

@media (prefers-reduced-motion: reduce) {
  *, #main.view-anim { animation: none !important; transition: none !important; }
}