/* ===================================================
   CHRIS FITNESS — Calculadora de Calorías y Macros
   Sistema de diseño (tema claro, futurista):
   Color  → blanco #FFFFFF, panel #FAFAFC, tinta #15131A,
            naranja CF #FF6A35, magenta energía #E5157A, violeta #6C5CE7
   Type   → Bebas Neue (display/números, con gradiente en cifras clave),
            Inter (cuerpo), JetBrains Mono (datos/HUD)
   ================================================== */

:root {
  --bg: #FFFFFF;
  --panel: #FAFAFC;
  --panel-2: #F2F1F7;
  --line: #EAE8F0;
  --line-strong: #DBD8E6;
  --ink: #15131A;
  --ink-dim: #5A5766;
  --ink-faint: #736F80;
  --orange: #FF6A35;
  --orange-deep: #C93A10;
  --orange-dim: rgba(255,106,53,0.10);
  --magenta: #FF2E8E;
  --magenta-deep: #D6157A;
  --violet: #6C5CE7;
  --violet-text: #5B4BD6;
  --violet-dim: rgba(108,92,231,0.10);
  --protein: #C93A10;
  --carbs: #9C640B;
  --fat: #167D4A;

  --grad-energy: linear-gradient(90deg, var(--orange-deep), var(--magenta-deep));
  --grad-energy-soft: linear-gradient(90deg, var(--orange), var(--magenta));

  --display: 'Bebas Neue', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;

  --radius: 14px;
  --radius-lg: 22px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* ---------- ambient bg ---------- */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 1;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.glow {
  position: fixed; border-radius: 50%; filter: blur(120px); pointer-events: none; z-index: 0;
}
.glow--1 { width: 620px; height: 620px; top: -220px; right: -160px; background: radial-gradient(circle, rgba(255,106,53,0.16), transparent 70%); }
.glow--2 { width: 560px; height: 560px; bottom: 5%; left: -220px; background: radial-gradient(circle, rgba(255,46,142,0.10), transparent 70%); }
.glow--3 { width: 420px; height: 420px; top: 40%; right: 10%; background: radial-gradient(circle, rgba(108,92,231,0.08), transparent 70%); }

main, header, footer { position: relative; z-index: 2; }



/* ---------- nav ---------- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 26px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}
.nav__mark {
  font-family: var(--display);
  font-size: 26px; letter-spacing: 0.05em;
  color: var(--ink);
  font-weight: 400;
}
.nav__mark span {
  margin-left: 0.18em;
  color: var(--orange-deep); /* fallback si no soporta background-clip */
  background: var(--grad-energy);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
@supports not (-webkit-background-clip: text) {
  .nav__mark span { color: var(--orange-deep); }
}
.nav__tag {
  font-size: 13px; color: var(--ink-faint);
  font-weight: 600; letter-spacing: 0.03em;
  display: none;
}
@media (min-width: 640px) { .nav__tag { display: block; } }

/* ---------- hero ---------- */
.hero {
  padding: clamp(56px, 10vw, 120px) clamp(20px, 5vw, 64px) clamp(40px, 6vw, 72px);
  max-width: 900px;
}
.hero__eyebrow {
  font-family: var(--mono);
  font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 18px;
  display: inline-flex; align-items: center; gap: 8px;
}
.hero__eyebrow::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%;
  background: var(--grad-energy-soft);
  box-shadow: 0 0 0 3px var(--orange-dim);
  flex-shrink: 0;
}
.hero__title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(40px, 7vw, 76px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  margin: 0 0 22px;
  color: var(--ink);
}
.hero__title-accent {
  color: var(--orange-deep); /* fallback */
  background: var(--grad-energy);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__sub {
  font-size: clamp(16px, 2vw, 18.5px);
  line-height: 1.6;
  color: var(--ink-dim);
  max-width: 540px;
  margin: 0 0 32px;
  font-weight: 400;
}
.hero__cta {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--body); font-weight: 700; font-size: 15px;
  color: #FFFFFF; background: var(--ink);
  padding: 14px 24px; border-radius: 100px;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.hero__cta:hover {
  background: var(--grad-energy);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,46,142,0.25);
}

/* ---------- calc layout ---------- */
.calc {
  padding: 0 clamp(20px, 5vw, 64px) clamp(60px, 8vw, 100px);
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  scroll-margin-top: 24px;
}
@media (min-width: 980px) {
  .calc { grid-template-columns: 1fr 1fr; align-items: start; gap: 24px; }
}

.calc__panel, .result {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 40px);
  position: relative;
  overflow: hidden;
}
.calc__panel::before, .result::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-energy-soft);
}

.calc__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 24px; }
.calc__head--spaced { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line-strong); }
.calc__step {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--orange-deep); background: var(--orange-dim);
  padding: 4px 9px; border-radius: 5px; font-weight: 700;
}
.calc__head h2 {
  font-family: var(--display); font-weight: 400; font-size: 26px;
  margin: 0; letter-spacing: 0.01em; color: var(--ink);
}

.field { margin-bottom: 22px; }
.field__label {
  display: block; font-size: 13.5px; font-weight: 600;
  color: var(--ink); margin-bottom: 10px; letter-spacing: 0.01em;
}
.field__hint {
  display: block; font-size: 12.5px; font-weight: 400;
  color: var(--ink-faint); margin-top: 3px;
}

.field-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin-bottom: 22px;
}
@media (max-width: 480px) { .field-grid { gap: 10px; } }

.input-unit {
  position: relative; display: flex; align-items: center;
  background: #FFFFFF; border: 1.5px solid var(--line-strong);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input-unit:focus-within { border-color: var(--violet); box-shadow: 0 0 0 3px var(--violet-dim); }
.input-unit input {
  width: 100%; background: transparent; border: none; outline: none;
  color: var(--ink); font-family: var(--mono); font-size: 18px; font-weight: 600;
  padding: 13px 8px 13px 14px;
  -moz-appearance: textfield;
}
.input-unit input::-webkit-outer-spin-button,
.input-unit input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-unit input::placeholder { color: var(--ink-faint); }
.input-unit__suffix {
  font-size: 12.5px; color: var(--ink-faint); padding-right: 14px;
  white-space: nowrap; font-weight: 600;
}

.toggle-group {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
}
.toggle-group--3 { grid-template-columns: 1fr 1fr 1fr; }
.toggle-btn {
  font-family: var(--body); font-weight: 600; font-size: 13.5px;
  color: var(--ink-dim); background: #FFFFFF;
  border: 1.5px solid var(--line-strong); border-radius: var(--radius);
  padding: 13px 10px; cursor: pointer;
  transition: all 0.18s ease;
}
.toggle-btn:hover { border-color: var(--orange); color: var(--ink); }
.toggle-btn.is-active {
  background: var(--grad-energy); border-color: transparent; color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(201,58,16,0.25);
}

.select-wrap {
  position: relative; background: #FFFFFF;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
}
.select-wrap::after {
  content: ''; position: absolute; right: 16px; top: 50%;
  width: 9px; height: 9px; border-right: 1.5px solid var(--ink-faint); border-bottom: 1.5px solid var(--ink-faint);
  transform: translateY(-65%) rotate(45deg); pointer-events: none;
}
.select-wrap select {
  width: 100%; appearance: none; background: transparent; border: none; outline: none;
  color: var(--ink); font-family: var(--body); font-size: 14.5px; font-weight: 500;
  padding: 14px 36px 14px 14px; cursor: pointer;
}
.select-wrap select option { background: #FFFFFF; color: var(--ink); }

/* ---------- pace slider (signature element) ---------- */
.slider-block {
  background: #FFFFFF; border: 1.5px solid var(--line-strong);
  border-radius: var(--radius); padding: 22px 18px 18px;
}
.slider-block__readout {
  font-family: var(--display); font-size: 40px; line-height: 1;
  margin-bottom: 14px;
  display: flex; align-items: baseline; gap: 8px;
}
.slider-block__readout span:first-child {
  color: var(--orange-deep); /* fallback */
  background: var(--grad-energy);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.slider-block__unit {
  font-family: var(--body); font-size: 13px; font-weight: 600;
  color: var(--ink-faint); letter-spacing: 0.01em;
}

#paceSlider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; border-radius: 4px;
  background: var(--grad-energy-soft);
  outline: none; cursor: pointer; margin: 6px 0 4px;
}
#paceSlider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 24px; height: 24px; border-radius: 50%;
  background: #FFFFFF; border: 3px solid var(--magenta-deep);
  cursor: grab; box-shadow: 0 2px 8px rgba(214,21,122,0.3);
  transition: transform 0.12s ease;
}
#paceSlider::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.12); }
#paceSlider::-moz-range-thumb {
  width: 24px; height: 24px; border-radius: 50%;
  background: #FFFFFF; border: 3px solid var(--magenta-deep);
  cursor: grab; box-shadow: 0 2px 8px rgba(214,21,122,0.3);
}
#paceSlider:focus-visible { outline: 2px solid var(--violet); outline-offset: 4px; }

.slider-block__ticks {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint);
  padding: 0 2px; margin-bottom: 12px;
}
.slider-block__ticks span.is-current { color: var(--magenta-deep); font-weight: 700; }

.slider-block__note {
  margin: 0; font-size: 13px; color: var(--ink-dim);
  border-top: 1px solid var(--line-strong); padding-top: 12px;
}

#paceField.is-disabled { opacity: 0.4; pointer-events: none; filter: grayscale(0.6); }

.calc__submit {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--grad-energy); color: #FFFFFF;
  font-family: var(--body); font-weight: 700; font-size: 15.5px;
  border: none; border-radius: 100px; padding: 17px 20px;
  cursor: pointer; margin-top: 8px;
  transition: transform 0.15s ease, box-shadow 0.18s ease;
  box-shadow: 0 6px 18px rgba(201,58,16,0.22);
}
.calc__submit:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(214,21,122,0.3); }
.calc__submit:active { transform: translateY(0); }
.calc__submit svg { transition: transform 0.18s ease; }
.calc__submit:hover svg { transform: translateX(3px); }

.calc__error {
  color: #C0392B; font-size: 13px; font-weight: 600; text-align: center;
  margin: 12px 0 0; min-height: 16px;
}

/* ---------- result panel ---------- */
.result {
  min-height: 420px;
  display: flex; flex-direction: column;
  position: relative;
}
@media (min-width: 980px) { .result { position: sticky; top: 24px; } }

.result__locked {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: 16px; padding: 40px 20px; color: var(--ink-faint);
}
.result__locked-icon {
  width: 64px; height: 64px; border-radius: 50%;
  border: 1px dashed var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-faint);
}
.result__locked p { margin: 0; font-size: 14.5px; max-width: 240px; line-height: 1.5; }

.result__content { display: none; flex: 1; flex-direction: column; }
.result__content.is-visible { display: flex; animation: rise 0.5s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.result__eyebrow {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.12em;
  color: var(--orange-deep); font-weight: 700;
}
.result__kcal {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(56px, 8vw, 80px); line-height: 0.95;
  margin: 8px 0 6px; color: var(--ink);
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
}
.result__kcal-unit { font-family: var(--body); font-size: 15px; font-weight: 600; color: var(--ink-faint); }
.result__sub { margin: 0 0 26px; color: var(--ink-dim); font-size: 14.5px; line-height: 1.55; max-width: 460px; }

.result__macros { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; margin-bottom: 24px; }
@media (max-width: 420px) { .result__macros { grid-template-columns: 1fr; } }

.macro-card {
  background: #FFFFFF; border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 16px 14px;
  display: flex; flex-direction: column; gap: 4px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.macro-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.macro-card__label { font-size: 12px; font-weight: 600; color: var(--ink-faint); }
.macro-card__value { font-family: var(--display); font-size: 30px; color: var(--ink); line-height: 1; margin-top: 2px; }
.macro-card__kcal { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }
.macro-card__bar {
  height: 4px; border-radius: 3px; background: var(--line-strong);
  margin-top: 10px; overflow: hidden;
}
.macro-card__bar-fill { height: 100%; width: 0%; border-radius: 3px; transition: width 0.6s ease; }
.macro-card--protein .macro-card__bar-fill { background: var(--protein); }
.macro-card--carbs .macro-card__bar-fill { background: var(--carbs); }
.macro-card--fat .macro-card__bar-fill { background: var(--fat); }

.result__meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 28px;
}
.result__meta-item {
  background: #FFFFFF; border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 14px 16px;
  display: flex; flex-direction: column; gap: 6px;
}
.result__meta-item span { font-size: 11.5px; color: var(--ink-faint); font-weight: 600; }
.result__meta-item strong { font-family: var(--mono); font-size: 16px; color: var(--ink); font-weight: 700; }

/* ---------- menú de comidas ---------- */
.menu {
  padding: 0 clamp(20px, 5vw, 64px) clamp(60px, 8vw, 100px);
  max-width: 900px;
  margin: 0 auto;
  display: none;
}
.menu.is-visible { display: block; animation: rise 0.5s ease; }

.menu__head { text-align: center; margin-bottom: 22px; }
.menu__badges {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-bottom: 14px; flex-wrap: wrap;
}
.menu__badges .calc__step { margin-bottom: 0; }
.menu__example-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--violet-text); background: var(--violet-dim);
  border: 1px dashed var(--violet);
  padding: 4px 10px 4px 8px; border-radius: 100px; font-weight: 700;
}
.menu__head h2 {
  font-family: var(--display); font-weight: 400; font-size: clamp(28px, 4vw, 36px);
  margin: 0 0 8px; color: var(--ink); letter-spacing: 0.01em;
}
.menu__sub { margin: 0; color: var(--ink-dim); font-size: 15px; }

.menu__disclaimer {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--violet-dim); border: 1px dashed var(--violet);
  border-radius: var(--radius); padding: 14px 18px;
  margin-bottom: 24px;
}
.menu__disclaimer svg { flex-shrink: 0; margin-top: 1px; color: var(--violet-text); }
.menu__disclaimer p { margin: 0; font-size: 13.5px; line-height: 1.5; color: var(--ink-dim); }
.menu__disclaimer strong { color: var(--ink); }

.menu__tabs {
  display: flex; justify-content: center; gap: 8px; margin-bottom: 24px; flex-wrap: wrap;
}
.menu-tab {
  font-family: var(--body); font-weight: 700; font-size: 13.5px;
  color: var(--ink-dim); background: #FFFFFF;
  border: 1px solid var(--line-strong); border-radius: 100px;
  padding: 11px 20px; cursor: pointer;
  transition: all 0.18s ease;
}
.menu-tab:hover { border-color: var(--orange-deep); color: var(--ink); }
.menu-tab.is-active { background: var(--ink); border-color: var(--ink); color: #FFFFFF; }

.menu__board { display: flex; flex-direction: column; gap: 14px; }

.meal-card {
  background: var(--panel); border: 1.5px dashed var(--line-strong);
  border-radius: var(--radius-lg); padding: 22px clamp(18px, 3vw, 28px);
  position: relative;
}
.meal-card__head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 6px;
  border-bottom: 1px solid var(--line-strong); padding-bottom: 14px;
}
.meal-card__title {
  font-family: var(--display); font-weight: 400; font-size: 22px;
  color: var(--ink); letter-spacing: 0.01em; margin: 0;
}
.meal-card__kcal {
  font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--orange-deep);
}
.meal-card__items { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.meal-card__item {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 14px; gap: 12px;
}
.meal-card__item-name { color: var(--ink); font-weight: 500; }
.meal-card__item-grams {
  font-family: var(--mono); font-size: 13px; color: var(--ink-faint);
  white-space: nowrap; flex-shrink: 0;
}
.meal-card__macros {
  display: flex; gap: 16px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 12px; color: var(--ink-dim);
  border-top: 1px solid var(--line-strong); padding-top: 14px;
}
.meal-card__macros b { color: var(--ink); font-weight: 700; }

.menu__daytotal {
  display: flex; justify-content: center; gap: 24px; flex-wrap: wrap;
  background: var(--ink); border-radius: var(--radius-lg);
  padding: 18px 24px; margin-top: 4px;
}
.menu__daytotal-item { text-align: center; }
.menu__daytotal-item span {
  display: block; font-size: 11px; color: rgba(255,255,255,0.6); font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 4px;
}
.menu__daytotal-item strong {
  font-family: var(--display); font-size: 22px; color: #FFFFFF; font-weight: 400;
}

.menu__refresh {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin: 20px auto 0; background: none; border: 1px solid var(--line-strong);
  border-radius: 100px; padding: 11px 20px; font-family: var(--body);
  font-weight: 600; font-size: 13.5px; color: var(--ink-dim); cursor: pointer;
  transition: all 0.18s ease;
}
.menu__refresh:hover { border-color: var(--orange-deep); color: var(--ink); }

/* ---------- WhatsApp CTA ---------- */
.wa-cta {
  margin-top: 24px; padding-top: 28px; border-top: 1px solid var(--line-strong);
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
.wa-cta__icon {
  width: 48px; height: 48px; border-radius: 50%;
  background: #128C7E; color: #FFFFFF;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.wa-cta__title {
  font-family: var(--display); font-weight: 400; font-size: 22px;
  color: var(--ink); margin: 0 0 8px; letter-spacing: 0.01em;
}
.wa-cta__copy {
  font-size: 13.5px; color: var(--ink-dim); line-height: 1.55;
  max-width: 380px; margin: 0 0 20px;
}
.wa-cta__btn {
  display: inline-flex; align-items: center; gap: 9px;
  background: #128C7E; color: #FFFFFF; text-decoration: none;
  font-family: var(--body); font-weight: 700; font-size: 14.5px;
  padding: 14px 26px; border-radius: 100px;
  transition: background 0.18s ease, transform 0.15s ease;
}
.wa-cta__btn:hover { background: #0E6E63; transform: translateY(-1px); }

/* ---------- footer ---------- */
.footer {
  padding: 48px clamp(20px, 5vw, 64px) 60px;
  display: flex; flex-direction: column; gap: 10px;
  border-top: 1px solid var(--line-strong);
}
.nav__mark--footer { font-size: 20px; }
.footer p { margin: 0; font-size: 12.5px; color: var(--ink-faint); }