/* ==========================================================================
   RUTINA EN LÍNEA — "MOTION INDEX" DESIGN SYSTEM
   Palette:
   Dark main: #111111
   Light main: #F4F1E8
   Accent Orange-Red: #FF5C35
   Lime Accent: #D6F04A
   Electric Blue: #5D6BFF
   White: #FFFFFF
   Secondary Text: #777777 / #888888 / #444444
   Fonts: 'Space Grotesk' / sans-serif, 'IBM Plex Mono' / 'Space Mono' / monospace
   ========================================================================== */

:root {
  --bg-dark: #111111;
  --bg-dark-card: #181818;
  --bg-dark-elevated: #222222;
  --bg-light: #F4F1E8;
  --bg-light-card: #EAE6DB;
  --bg-light-elevated: #DFDAD0;
  
  --accent-orange: #FF5C35;
  --accent-lime: #D6F04A;
  --accent-blue: #5D6BFF;
  
  --text-light-primary: #FFFFFF;
  --text-light-secondary: #9E9E9E;
  --text-light-muted: #666666;
  
  --text-dark-primary: #111111;
  --text-dark-secondary: #555555;
  --text-dark-muted: #777777;
  
  --border-dark: #262626;
  --border-light: #DDD7CA;
  
  --font-main: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Space Mono', Consolas, monospace;
}

/* Global Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-light-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Coordinate Grid Background Utilities */
.grid-bg-dark {
  background-color: var(--bg-dark);
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.grid-bg-light {
  background-color: var(--bg-light);
  color: var(--text-dark-primary);
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Diagonal Motion Cut Divider */
.motion-divider-diagonal {
  width: 100%;
  height: 60px;
  overflow: hidden;
  line-height: 0;
  position: relative;
  z-index: 5;
}

.motion-divider-diagonal svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography elements */
.mono {
  font-family: var(--font-mono);
}

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border: 1px solid currentColor;
}

.tag-badge-orange {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
  background: rgba(255, 92, 53, 0.08);
}

.tag-badge-lime {
  color: #111111;
  background: var(--accent-lime);
  border-color: var(--accent-lime);
  font-weight: 700;
}

.tag-badge-blue {
  color: var(--accent-blue);
  border-color: var(--accent-blue);
  background: rgba(93, 107, 255, 0.08);
}

.big-stat-number {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.huge-title {
  font-size: clamp(2.4rem, 6.5vw, 5.5rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  line-height: 1.05;
}

/* Header & Navigation */
.header-motion {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17, 17, 17, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-dark);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-motion {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.logo-icon-svg {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #BBBBBB;
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-lime);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-orange);
  transition: width 0.25s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

.header-btn {
  background: var(--accent-lime);
  color: #111111;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 24px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 0;
  position: relative;
  transition: transform 0.2s, background 0.2s;
}

.header-btn:hover {
  background: #FFFFFF;
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #FFFFFF;
  transition: all 0.3s;
}

/* Mobile Fullscreen Menu */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: #111111;
  z-index: 200;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 40px 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-close {
  position: absolute;
  top: 24px;
  right: 24px;
  color: #FFFFFF;
  font-size: 2rem;
  line-height: 1;
}

.mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  text-align: center;
}

.mobile-links a {
  font-size: 1.8rem;
  font-weight: 800;
  text-transform: uppercase;
  color: #FFFFFF;
}

.mobile-links a:hover {
  color: var(--accent-lime);
}

/* Buttons */
.btn-primary-motion {
  background: var(--accent-orange);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 32px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--accent-orange);
  transition: transform 0.2s, background 0.2s;
}

.btn-primary-motion:hover {
  background: #E84A22;
  transform: translateY(-2px);
}

.btn-secondary-motion {
  background: transparent;
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 32px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1px solid #444444;
  transition: all 0.2s;
}

.btn-secondary-motion:hover {
  border-color: var(--accent-lime);
  color: var(--accent-lime);
  transform: translateY(-2px);
}

/* HERO SECTION: Dynamic Asymmetric Composition */
.hero-motion-section {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dark);
}

.hero-grid-composition {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  position: relative;
}

.hero-content {
  position: relative;
  z-index: 10;
}

.hero-tag-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-headline {
  margin-bottom: 24px;
}

.hero-headline span.highlight-lime {
  color: var(--accent-lime);
  display: block;
}

.hero-headline span.highlight-orange {
  color: var(--accent-orange);
}

.hero-lead {
  font-size: 1.25rem;
  color: #CCCCCC;
  max-width: 580px;
  margin-bottom: 36px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-metrics-strip {
  display: flex;
  gap: 36px;
  border-top: 1px solid var(--border-dark);
  padding-top: 28px;
}

.hero-metric-item {
  display: flex;
  flex-direction: column;
}

.hero-metric-item .val {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: #FFFFFF;
}

.hero-metric-item .val.lime {
  color: var(--accent-lime);
}

.hero-metric-item .val.orange {
  color: var(--accent-orange);
}

.hero-metric-item .lbl {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-light-secondary);
  text-transform: uppercase;
}

.hero-visual-frame {
  position: relative;
  z-index: 5;
}

.hero-image-wrapper {
  position: relative;
  border: 1px solid var(--border-dark);
  background: #181818;
  padding: 10px;
  clip-path: polygon(0 0, 100% 0, 100% 92%, 90% 100%, 0 100%);
}

.hero-image-wrapper img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: contrast(1.05) saturate(1.02);
}

.hero-motion-stamp {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--bg-dark);
  border: 1px solid var(--accent-orange);
  padding: 16px 24px;
  font-family: var(--font-mono);
  z-index: 12;
  box-shadow: 0 12px 30px rgba(0,0,0,0.6);
}

.hero-motion-stamp .stamp-title {
  font-size: 0.75rem;
  color: var(--accent-orange);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero-motion-stamp .stamp-val {
  font-size: 1.6rem;
  font-weight: 900;
  color: #FFFFFF;
}

.hero-bg-accent-path {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  pointer-events: none;
  opacity: 0.4;
  z-index: 1;
}

/* SECTION: DISCLAIMER & ESTIMATION BANNER */
.disclaimer-motion-box {
  background: rgba(255, 92, 53, 0.05);
  border-left: 4px solid var(--accent-orange);
  border-top: 1px solid var(--border-dark);
  border-right: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
  padding: 24px 32px;
  margin: 40px 0;
}

.disclaimer-motion-box .d-head {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-bottom: 8px;
}

.disclaimer-motion-box p {
  color: #BBBBBB;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* SECTION 30 EXERCISES (MOTION INDEX) */
.section-motion-index {
  padding: 100px 0;
}

.index-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 24px;
}

.index-filters-bar {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  padding: 20px 24px;
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.filter-group-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-group-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-lime);
  min-width: 140px;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border: 1px solid #333333;
  color: #CCCCCC;
  background: #111111;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: #777777;
  color: #FFFFFF;
}

.filter-btn.active {
  background: var(--accent-lime);
  color: #111111;
  border-color: var(--accent-lime);
  font-weight: 700;
}

/* Exercise Cards: "Motion Record" Concept */
.exercises-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

.exercise-record-card {
  background: #151515;
  border: 1px solid var(--border-dark);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s;
}

.exercise-record-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-orange);
}

.card-top-track {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-dark);
  background: #1a1a1a;
}

.card-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  color: #FFFFFF;
}

.card-intensity-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  text-transform: uppercase;
  border: 1px solid currentColor;
}

.badge-suave {
  color: var(--accent-lime);
  border-color: var(--accent-lime);
}

.badge-moderada {
  color: #FFAE35;
  border-color: #FFAE35;
}

.badge-intensa {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

.card-diagram-box {
  background: #0d0d0d;
  padding: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid var(--border-dark);
  position: relative;
}

.card-diagram-box .motion-svg {
  width: 140px;
  height: 140px;
}

.card-body {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-exercise-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 10px;
  color: #FFFFFF;
}

.card-exercise-desc {
  font-size: 0.9rem;
  color: #AAAAAA;
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-metrics-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 14px;
  background: #111111;
  border: 1px solid #222222;
  margin-bottom: 20px;
}

.metric-cell {
  display: flex;
  flex-direction: column;
}

.metric-cell .cell-lbl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: #777777;
  text-transform: uppercase;
}

.metric-cell .cell-val {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
}

.metric-cell .cell-val.highlight {
  color: var(--accent-lime);
}

.card-footer-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-view-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-orange);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-view-link:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

/* SECTION 5 MEALS: VERTICAL EDITORIAL COMPOSITION */
.section-5-comidas-editorial {
  padding: 120px 0;
  background-color: var(--bg-light);
  color: var(--text-dark-primary);
}

.meal-editorial-item {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--border-light);
  position: relative;
}

.meal-editorial-item:last-child {
  border-bottom: none;
}

.meal-editorial-item:nth-child(even) {
  grid-template-columns: 0.9fr 1.1fr;
}

.meal-editorial-item:nth-child(even) .meal-visual {
  order: 1;
}

.meal-editorial-item:nth-child(even) .meal-info {
  order: 2;
}

.meal-number-watermark {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 10vw, 7rem);
  font-weight: 900;
  line-height: 0.8;
  color: rgba(0, 0, 0, 0.08);
  margin-bottom: -15px;
}

.meal-title-editorial {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 18px;
  color: #111111;
}

.meal-summary-text {
  font-size: 1.05rem;
  color: #444444;
  line-height: 1.6;
  margin-bottom: 24px;
}

.meal-macros-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  background: var(--bg-light-card);
  padding: 16px;
  border: 1px solid var(--border-light);
  margin-bottom: 24px;
}

.macro-box {
  display: flex;
  flex-direction: column;
}

.macro-box .m-lbl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: #666666;
  letter-spacing: 0.08em;
}

.macro-box .m-val {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: #111111;
}

.meal-visual {
  position: relative;
}

.meal-img-wrapper {
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
}

.meal-img-wrapper img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.meal-editorial-item:hover .meal-img-wrapper img {
  transform: scale(1.03);
}

/* SECTION PLATO EQUILIBRADO INTERACTIVE SVG */
.plate-section {
  padding: 100px 0;
  background: #111111;
  border-top: 1px solid var(--border-dark);
}

.plate-container-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.plate-svg-box {
  display: flex;
  justify-content: center;
  align-items: center;
}

.plate-svg-box svg {
  max-width: 440px;
  width: 100%;
  height: auto;
}

.plate-legend-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.plate-legend-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: #181818;
  border: 1px solid var(--border-dark);
  border-left-width: 4px;
}

.plate-legend-item.green { border-left-color: var(--accent-lime); }
.plate-legend-item.orange { border-left-color: var(--accent-orange); }
.plate-legend-item.blue { border-left-color: var(--accent-blue); }
.plate-legend-item.yellow { border-left-color: #E5C158; }

.plate-legend-item h4 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.plate-legend-item p {
  font-size: 0.85rem;
  color: #AAAAAA;
}

/* SECTION 7-DAY ROUTINE & SESSION CALCULATOR */
.section-tools-interactive {
  padding: 100px 0;
  background: #161616;
  border-top: 1px solid var(--border-dark);
}

.tool-dual-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}

.card-tool-panel {
  background: #111111;
  border: 1px solid var(--border-dark);
  padding: 32px;
}

.week-days-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.day-row-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  align-items: center;
  padding: 12px 16px;
  background: #181818;
  border: 1px solid #282828;
}

.day-name {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--accent-lime);
}

.day-select-activity {
  width: 100%;
  background: #111111;
  color: #FFFFFF;
  border: 1px solid #333333;
  padding: 8px 12px;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.day-select-activity:focus {
  border-color: var(--accent-orange);
}

/* Interactive Session Calculator */
.calc-field-group {
  margin-bottom: 20px;
}

.calc-field-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--accent-lime);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.calc-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.calc-input {
  background: #181818;
  border: 1px solid #333333;
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  padding: 10px 16px;
  width: 140px;
  outline: none;
}

.calc-input:focus {
  border-color: var(--accent-lime);
}

.calc-session-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
  min-height: 80px;
}

.calc-session-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #181818;
  border: 1px solid #282828;
  padding: 10px 14px;
}

.calc-total-banner {
  background: #1e1e1e;
  border: 1px solid var(--accent-lime);
  padding: 20px;
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-total-banner .total-val {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--accent-lime);
}

/* SINGLE EXERCISE DETAIL PAGE */
.exercise-detail-hero {
  padding: 80px 0 60px;
  border-bottom: 1px solid var(--border-dark);
}

.detail-headline-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 24px;
}

.detail-num {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 0.9;
  color: var(--accent-orange);
}

.detail-grid-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
}

.detail-photo-frame {
  border: 1px solid var(--border-dark);
  background: #181818;
  padding: 12px;
  position: relative;
}

.detail-photo-frame img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.detail-diagram-banner {
  margin-top: 24px;
  background: #0d0d0d;
  border: 1px solid var(--border-dark);
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.detail-diagram-banner svg {
  max-width: 220px;
  height: auto;
}

.detail-calc-box {
  background: #181818;
  border: 1px solid var(--border-dark);
  padding: 28px;
  margin-bottom: 32px;
}

.instructions-steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.step-item {
  display: flex;
  gap: 16px;
  background: #181818;
  border: 1px solid #282828;
  padding: 16px;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-lime);
}

.variation-box {
  padding: 18px;
  background: #151515;
  border-left: 3px solid;
  margin-top: 16px;
}

.variation-box.easy { border-left-color: var(--accent-lime); }
.variation-box.hard { border-left-color: var(--accent-orange); }

/* ARTICLES GRID & DETAIL */
.articles-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.article-card-motion {
  background: #161616;
  border: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, border-color 0.2s;
}

.article-card-motion:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
}

.article-card-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.article-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.article-card-motion:hover .article-card-img img {
  transform: scale(1.05);
}

.article-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin: 12px 0;
  color: #FFFFFF;
}

.article-card-excerpt {
  font-size: 0.9rem;
  color: #AAAAAA;
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* FAQ ACCORDION */
.faqs-container-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item-box {
  background: #161616;
  border: 1px solid var(--border-dark);
  transition: border-color 0.2s;
}

.faq-item-box:hover {
  border-color: #444444;
}

.faq-question-btn {
  width: 100%;
  text-align: left;
  padding: 22px 24px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-question-btn .faq-icon {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--accent-lime);
  transition: transform 0.3s;
}

.faq-item-box.open .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-orange);
}

.faq-answer-content {
  padding: 0 24px 22px;
  color: #CCCCCC;
  font-size: 0.95rem;
  line-height: 1.6;
  display: none;
}

.faq-item-box.open .faq-answer-content {
  display: block;
}

/* FOOTER */
.footer-motion {
  background: #0a0a0a;
  border-top: 1px solid var(--border-dark);
  padding: 80px 0 40px;
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand h3 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-brand p {
  color: #888888;
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-lime);
  margin-bottom: 20px;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav-list a {
  font-size: 0.85rem;
  color: #999999;
}

.footer-nav-list a:hover {
  color: #FFFFFF;
}

.footer-bottom-bar {
  border-top: 1px solid #1a1a1a;
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  color: #666666;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* RESPONSIVE BREAKPOINTS (320px to 1440px) */
@media (max-width: 1024px) {
  .hero-motion-section {
    padding: 50px 0 60px;
  }
  .hero-grid-composition {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual-frame {
    order: 0;
  }
  .hero-image-wrapper img {
    height: 420px;
  }
  .meal-editorial-item,
  .meal-editorial-item:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 50px 0;
  }
  .meal-editorial-item:nth-child(even) .meal-visual {
    order: 0;
  }
  .plate-container-grid {
    grid-template-columns: 1fr;
  }
  .tool-dual-grid {
    grid-template-columns: 1fr;
  }
  .detail-grid-layout {
    grid-template-columns: 1fr;
  }
  .footer-main-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 68px;
  }
  .nav-links, .header-btn {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .hero-motion-section {
    padding: 36px 0 50px;
  }
  .hero-grid-composition {
    gap: 32px;
  }
  .hero-tag-row {
    margin-bottom: 16px;
    gap: 10px;
    flex-wrap: wrap;
  }
  .hero-headline {
    margin-bottom: 16px;
  }
  .hero-lead {
    font-size: 1.05rem;
    margin-bottom: 24px;
    line-height: 1.5;
  }
  .hero-actions {
    margin-bottom: 32px;
  }
  .hero-metrics-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding-top: 20px;
  }
  .hero-metric-item .val {
    font-size: 1.6rem;
  }
  .hero-image-wrapper {
    clip-path: polygon(0 0, 100% 0, 100% 95%, 92% 100%, 0 100%);
  }
  .hero-image-wrapper img {
    height: 340px;
  }
  .hero-motion-stamp {
    left: 12px;
    bottom: 12px;
    padding: 10px 16px;
  }
  .hero-motion-stamp .stamp-title {
    font-size: 0.65rem;
  }
  .hero-motion-stamp .stamp-val {
    font-size: 1.25rem;
  }
  .disclaimer-motion-box {
    padding: 18px 20px;
    margin: 24px 0;
  }
  .section-motion-index {
    padding: 50px 0;
  }
  .index-header-row {
    margin-bottom: 24px;
  }
  .index-filters-bar {
    padding: 16px;
    gap: 14px;
    margin-bottom: 28px;
  }
  .filter-group-label {
    min-width: 100%;
    margin-bottom: 2px;
  }
  .exercises-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .section-5-comidas-editorial {
    padding: 60px 0;
  }
  .meal-editorial-item {
    padding: 40px 0;
  }
  .meal-img-wrapper img {
    height: 280px;
  }
  .meal-macros-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 12px;
  }
  .plate-section {
    padding: 60px 0;
  }
  .section-tools-interactive {
    padding: 60px 0;
  }
  .card-tool-panel {
    padding: 20px 16px;
  }
  .footer-main-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-motion {
    padding: 50px 0 30px;
  }
}

@media (max-width: 480px) {
  .container, .container-wide {
    padding: 0 16px;
  }
  .header-inner {
    height: 60px;
  }
  .logo-motion {
    font-size: 1rem;
    gap: 8px;
  }
  .logo-icon-svg {
    width: 26px;
    height: 26px;
  }
  .hero-motion-section {
    padding: 24px 0 40px;
  }
  .huge-title {
    font-size: 2.1rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .hero-tag-row .tag-badge {
    font-size: 0.7rem;
    padding: 4px 10px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .hero-actions a {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
  }
  .hero-image-wrapper {
    padding: 6px;
  }
  .hero-image-wrapper img {
    height: 260px;
  }
  .hero-motion-stamp {
    left: 8px;
    bottom: 8px;
    padding: 8px 12px;
  }
  .hero-motion-stamp .stamp-title {
    font-size: 0.6rem;
  }
  .hero-motion-stamp .stamp-val {
    font-size: 1.1rem;
  }
  .hero-metrics-strip {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    padding-top: 16px;
  }
  .hero-metric-item .val {
    font-size: 1.4rem;
  }
  .card-metrics-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .day-row-item {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 10px 12px;
  }
  .calc-input-row {
    flex-direction: column;
    align-items: stretch;
  }
  .calc-input {
    width: 100%;
  }
  .card-diagram-box {
    padding: 16px;
  }
  .card-diagram-box .motion-svg {
    width: 110px;
    height: 110px;
  }
  .faq-question-btn {
    padding: 16px 18px;
    font-size: 0.95rem;
  }
  .faq-answer-content {
    padding: 0 18px 16px;
    font-size: 0.9rem;
  }
}

/* Touch-friendly filter buttons (min 44px tap target) */
@media (max-width: 768px) {
  .filter-btn {
    min-height: 36px;
    padding: 8px 14px;
  }
}

/* 320px safety net for narrowest devices */
@media (max-width: 360px) {
  .container, .container-wide {
    padding: 0 12px;
  }
  .hero-motion-stamp {
    display: none; /* stamp overlaps on very narrow screens */
  }
  .hero-image-wrapper img {
    height: 220px;
  }
  .formula-banner-grid {
    padding: 14px;
    gap: 14px;
  }
  .card-tool-panel {
    padding: 16px 12px;
  }
  .filter-btn {
    font-size: 0.72rem;
    padding: 6px 10px;
  }
  .tag-badge {
    font-size: 0.65rem;
    padding: 3px 8px;
  }
  .faq-question-btn {
    padding: 14px 14px;
    font-size: 0.9rem;
  }
  .huge-title {
    font-size: 1.9rem;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .footer-main-grid {
    grid-template-columns: 1fr;
  }
}

/* Explicit Component Classes for Formula Banner & Session Calculator */
.formula-banner-grid {
  background: #161616;
  border: 1px solid var(--border-dark);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.session-add-row-grid {
  display: grid;
  grid-template-columns: 1fr 100px auto;
  gap: 12px;
  align-items: flex-end;
}

.articles-index-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
  font-size: 0.85rem;
}

/* Strict mobile reset to guarantee 0 horizontal overflow */
html, body {
  max-width: 100%;
  overflow-x: hidden !important;
  position: relative;
}

*, *::before, *::after {
  max-width: 100%;
}

img, svg, video, canvas, audio, iframe, embed, object {
  max-width: 100%;
  height: auto;
}

@media (max-width: 768px) {
  .formula-banner-grid {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 20px;
  }
  .session-add-row-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .session-add-row-grid > div {
    width: 100%;
  }
  .session-add-row-grid button {
    width: 100%;
  }
  .articles-index-links-grid {
    grid-template-columns: 1fr;
  }
  .exercises-grid {
    grid-template-columns: 1fr !important;
  }
  .articles-masonry {
    grid-template-columns: 1fr !important;
  }
  .index-filters-bar {
    max-width: 100%;
    overflow-x: hidden;
  }
  .filter-group-row {
    max-width: 100%;
  }
}

/* Box-sizing safety: inputs/selects/buttons respect their container */
input, select, textarea, button {
  box-sizing: border-box;
}

/* calc-input: full width on mobile */
@media (max-width: 480px) {
  .calc-input {
    width: 100% !important;
  }
  select.day-select-activity,
  select.calc-input {
    width: 100% !important;
    max-width: 100%;
  }
}

/* Prevent long words from overflowing narrow containers */
.faq-answer-content,
.meal-description,
.article-body,
.card-instructions {
  overflow-wrap: break-word;
  word-break: break-word;
}