/* ============================================================
   SOLUCIÓN CRAFT — Design System
   Paleta: Blanco, Negro y Escala de Grises (estilo cartoon)
   Temas 1–23 cubiertos
   ============================================================ */

/* ===== TEMA 10: TIPOGRAFÍAS ===== */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Nunito:ital,wght@0,400;0,600;0,700;0,800;0,900;1,400&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* ===== TEMA 4+5: CSS VARIABLES / PROPIEDADES UTILIZADAS ===== */
:root {
  --black:      #0d0d0d;
  --gray-900:   #1a1a1a;
  --gray-800:   #2e2e2e;
  --gray-700:   #444444;
  --gray-600:   #5c5c5c;
  --gray-500:   #7a7a7a;
  --gray-400:   #a0a0a0;
  --gray-300:   #c4c4c4;
  --gray-200:   #dcdcdc;
  --gray-100:   #f0f0f0;
  --white:      #fafafa;
  --border-cartoon: 3px solid #0d0d0d;
  --border-thick:   4px solid #0d0d0d;
  --shadow-cartoon: 5px 5px 0px #0d0d0d;
  --shadow-hover:   8px 8px 0px #0d0d0d;
  --shadow-pressed: 2px 2px 0px #0d0d0d;
  --font-display: 'Bebas Neue', Impact, sans-serif;
  --font-body:    'Nunito', 'Segoe UI', sans-serif;
  --font-mono:    'Space Mono', 'Courier New', monospace;
  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 2.5rem;
  --sp-xl: 4rem;
  --sp-2xl: 6rem;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 40px;
  --transition: 0.25s cubic-bezier(0.34,1.56,0.64,1);
  --max-w: 1140px;
}

/* RESET */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-body);
  background:var(--white);
  color:var(--black);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::-webkit-scrollbar{width:8px;}
::-webkit-scrollbar-track{background:var(--gray-100);}
::-webkit-scrollbar-thumb{background:var(--black);border-radius:4px;}

/* TEMA 12: CENTRAR CONTENIDO */
.container{
  max-width:var(--max-w);
  margin-inline:auto;
  padding-inline:clamp(1.25rem,5vw,2.5rem);
}

/* =====================================================
   HEADER — TEMA 1+2: ESTRUCTURA SEMÁNTICA / ETIQUETAS
   ===================================================== */
.main-header{
  background:var(--white);
  border-bottom:var(--border-thick);
  padding:1rem clamp(1.25rem,5vw,2.5rem);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-sm);
  position:sticky;
  top:0;
  z-index:1000;
  /* TEMA 8: SOMBRAS */
  box-shadow:0 4px 0 var(--black);
}
.header-brand{display:flex;align-items:center;gap:var(--sp-sm);text-decoration:none;color:inherit;}

/* TEMA 3: IMÁGENES */
.logo{
  width:52px;height:52px;
  object-fit:cover;
  border-radius:50%;
  border:var(--border-cartoon);
  /* TEMA 8: SOMBRA */
  box-shadow:3px 3px 0 var(--black);
  /* TEMA 5: filtro */
  filter:grayscale(100%) contrast(1.1);
  /* TEMA 18: TRANSICIÓN */
  transition:transform var(--transition),box-shadow var(--transition);
}
.logo:hover{transform:rotate(-5deg) scale(1.08);box-shadow:var(--shadow-hover);}
.main-header h1{
  font-family:var(--font-display);
  font-size:clamp(1.8rem,4vw,2.4rem);
  letter-spacing:0.04em;line-height:1;
}
.header-tagline{
  font-family:var(--font-mono);font-size:0.68rem;
  color:var(--gray-500);letter-spacing:0.1em;text-transform:uppercase;
}

/* =====================================================
   NAV — TEMA 13: FLEX
   ===================================================== */
nav{
  background:var(--black);
  padding:0 clamp(1.25rem,5vw,2.5rem);
  /* TEMA 13 */
  display:flex;align-items:center;
  border-bottom:var(--border-thick);
  position:sticky;top:0;z-index:999;
}
nav a{
  color:var(--white);
  font-family:var(--font-body);font-weight:700;
  font-size:0.8rem;text-transform:uppercase;letter-spacing:0.12em;
  text-decoration:none;
  padding:1rem 1.4rem;
  position:relative;
  border-right:2px solid var(--gray-800);
  /* TEMA 18: TRANSICIÓN */
  transition:background var(--transition),color var(--transition);
}
nav a:first-child{border-left:2px solid var(--gray-800);}
nav a::after{
  content:'';position:absolute;bottom:0;left:0;
  width:100%;height:3px;background:var(--white);
  transform:scaleX(0);
  transition:transform 0.25s ease;transform-origin:left;
}
nav a:hover{background:var(--gray-800);}
nav a:hover::after{transform:scaleX(1);}
nav a.active{background:var(--white);color:var(--black);}
nav a.active::after{transform:scaleX(1);background:var(--black);}

/* =====================================================
   HERO — TEMA 9: IMÁGENES DE FONDO, TEMA 22: DEGRADADOS
   ===================================================== */
.hero-section{
  /* TEMA 9: fondo con patrón */
  background-color:var(--black);
  background-image:
    repeating-linear-gradient(0deg,transparent,transparent 39px,rgba(255,255,255,0.04) 39px,rgba(255,255,255,0.04) 40px),
    repeating-linear-gradient(90deg,transparent,transparent 39px,rgba(255,255,255,0.04) 39px,rgba(255,255,255,0.04) 40px);
  color:var(--white);
  padding:var(--sp-2xl) 0;
  border-bottom:var(--border-thick);
  position:relative;overflow:hidden;
}
/* TEMA 22: degradado decorativo */
.hero-section::before{
  content:'';position:absolute;top:-80px;right:-80px;
  width:320px;height:320px;
  background:radial-gradient(circle,var(--gray-800) 0%,transparent 70%);
  border-radius:50%;pointer-events:none;
}
.hero-inner{display:flex;align-items:center;gap:var(--sp-xl);}
.hero-text{flex:1;}
.hero-badge{
  display:inline-block;
  font-family:var(--font-mono);font-size:0.65rem;
  letter-spacing:0.18em;text-transform:uppercase;
  padding:5px 14px;
  border:2px solid var(--gray-400);
  border-radius:var(--radius-xl);color:var(--gray-400);
  margin-bottom:var(--sp-md);
}
.hero-section h2{
  font-family:var(--font-display);
  font-size:clamp(3rem,8vw,6rem);
  line-height:0.95;letter-spacing:0.02em;
  margin-bottom:var(--sp-md);
  /* TEMA 23: ANIMACIÓN */
  animation:heroSlideUp 0.9s cubic-bezier(0.22,1,0.36,1) both;
}
.hero-section h2 em{font-style:italic;color:var(--gray-400);}
.hero-section p.lead{
  font-size:1.1rem;color:var(--gray-300);
  max-width:480px;margin-bottom:var(--sp-lg);
  animation:heroSlideUp 0.9s cubic-bezier(0.22,1,0.36,1) 0.15s both;
}
.hero-cta{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--white);color:var(--black);
  font-weight:800;font-size:0.9rem;text-transform:uppercase;
  letter-spacing:0.1em;text-decoration:none;
  padding:0.85rem 2rem;
  border:var(--border-thick);border-radius:var(--radius-sm);
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);
  /* TEMA 18 */
  transition:transform var(--transition),box-shadow var(--transition);
  animation:heroSlideUp 0.9s cubic-bezier(0.22,1,0.36,1) 0.3s both;
}
.hero-cta:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-hover);}
.hero-cta:active{transform:translate(2px,2px);box-shadow:var(--shadow-pressed);}
.hero-stats{
  display:flex;flex-direction:column;gap:var(--sp-sm);
  animation:heroSlideUp 0.9s cubic-bezier(0.22,1,0.36,1) 0.45s both;
}
.stat-card{
  background:var(--gray-900);border:var(--border-cartoon);
  border-radius:var(--radius-md);
  padding:var(--sp-md) var(--sp-lg);text-align:center;
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);min-width:160px;
  /* TEMA 18 */
  transition:transform var(--transition),box-shadow var(--transition);
}
.stat-card:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-hover);}
.stat-card .num{font-family:var(--font-display);font-size:2.8rem;color:var(--white);line-height:1;}
.stat-card .lbl{font-size:0.7rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--gray-400);margin-top:4px;}

/* SECCIÓN: encabezados genéricos */
.section-label{
  font-family:var(--font-mono);font-size:0.65rem;
  letter-spacing:0.18em;text-transform:uppercase;
  color:var(--gray-500);
  display:flex;align-items:center;gap:10px;
  margin-bottom:var(--sp-sm);
}
.section-label::before{content:'';display:block;width:28px;height:2px;background:var(--black);}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(2rem,5vw,3.4rem);
  line-height:1;letter-spacing:0.02em;margin-bottom:var(--sp-lg);
}

/* =====================================================
   TICKER — TEMA 23: ANIMACIÓN CONTINUA
   ===================================================== */
.ticker{
  background:var(--black);
  border-top:var(--border-thick);border-bottom:var(--border-thick);
  padding:0.75rem 0;overflow:hidden;white-space:nowrap;
}
.ticker-inner{
  display:inline-flex;gap:var(--sp-xl);
  /* TEMA 23: animación */
  animation:marquee 22s linear infinite;
}
.ticker-item{
  font-family:var(--font-mono);font-size:0.75rem;
  letter-spacing:0.15em;text-transform:uppercase;
  color:var(--white);display:flex;align-items:center;gap:var(--sp-sm);
}
.ticker-item::before{content:'◆';color:var(--gray-500);}

/* =====================================================
   FEATURES / CARDS — TEMA 3: LISTAS, TEMA 7: BORDES,
   TEMA 8: SOMBRAS, TEMA 13: FLEX
   ===================================================== */
.features-section{
  padding:var(--sp-2xl) 0;
  border-bottom:var(--border-thick);
  background:var(--white);
}
.features-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:var(--sp-md);
}
/* TEMA 7 */
article.card{
  background:var(--white);
  border:var(--border-cartoon);
  border-radius:var(--radius-md);
  padding:var(--sp-lg);
  position:relative;overflow:hidden;
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);
  /* TEMA 18 */
  transition:transform var(--transition),box-shadow var(--transition);
}
article.card:hover{transform:translate(-4px,-4px);box-shadow:var(--shadow-hover);}
article.card::before{
  content:'';position:absolute;top:0;right:0;
  width:50px;height:50px;background:var(--black);
  clip-path:polygon(100% 0,0 0,100% 100%);
}
article.card .card-icon{
  font-size:2rem;margin-bottom:var(--sp-sm);display:block;
  /* TEMA 18 */
  transition:transform var(--transition);
}
article.card:hover .card-icon{transform:scale(1.2) rotate(-5deg);}
article.card h3{
  font-family:var(--font-display);
  font-size:1.5rem;letter-spacing:0.03em;
  margin-bottom:var(--sp-sm);
}
article.card p{color:var(--gray-700);font-size:0.95rem;}
/* TEMA 3: LISTAS */
article.card ul,article.card ol{
  padding-left:1.2rem;margin-top:var(--sp-sm);
  color:var(--gray-700);font-size:0.93rem;
}
article.card li{
  margin-bottom:6px;
  transition:transform var(--transition);
}
article.card li:hover{transform:translateX(5px);}
ul li::marker{color:var(--black);font-weight:900;}
ol li::marker{color:var(--black);font-weight:900;font-family:var(--font-mono);}

/* =====================================================
   TEMA 19: COLUMNAS DE TEXTO
   ===================================================== */
.columns-section{
  padding:var(--sp-2xl) 0;
  border-bottom:var(--border-thick);
  background:var(--gray-100);
}
.columns-intro{
  font-size:1rem;color:var(--gray-700);
  /* TEMA 19 */
  column-count:3;
  column-gap:var(--sp-lg);
  column-rule:2px solid var(--gray-300);
  text-align:justify;hyphens:auto;
}
.columns-intro p{break-inside:avoid;margin-bottom:var(--sp-sm);}
.columns-intro strong{color:var(--black);}

/* =====================================================
   PARALLAX — TEMA 9: BG ATTACHMENT, TEMA 22: DEGRADADOS
   ===================================================== */
.parallax-strip{
  /* TEMA 9: background-attachment */
  background-image:url('https://images.unsplash.com/photo-1498050108023-c5249f4df085?w=1400&q=80');
  background-attachment:fixed;
  background-size:cover;background-position:center;
  /* TEMA 5: filtro escala de grises */
  filter:grayscale(100%);
  min-height:300px;
  display:flex;align-items:center;justify-content:center;
  text-align:center;
  border-top:var(--border-thick);border-bottom:var(--border-thick);
  position:relative;overflow:hidden;
}
.parallax-strip::before{
  content:'';position:absolute;inset:0;
  /* TEMA 22: degradado con transparencia */
  background:linear-gradient(135deg,rgba(0,0,0,0.8) 0%,rgba(0,0,0,0.45) 50%,rgba(0,0,0,0.8) 100%);
  filter:none;
}
.parallax-content{position:relative;z-index:1;color:var(--white);}
.parallax-content blockquote{
  font-family:var(--font-display);
  font-size:clamp(2rem,5vw,3.5rem);
  line-height:1.05;max-width:800px;margin-inline:auto;
}
.parallax-content cite{
  display:block;font-family:var(--font-mono);font-size:0.75rem;
  letter-spacing:0.15em;text-transform:uppercase;color:var(--gray-300);
  margin-top:var(--sp-sm);font-style:normal;
}

/* =====================================================
   MULTIMEDIA — TEMA 20: VÍDEO, TEMA 21: AUDIO,
   TEMA 17: IFRAME, TEMA 3: IMÁGENES/FIGURAS
   ===================================================== */
.multimedia-section{
  padding:var(--sp-2xl) 0;
  border-bottom:var(--border-thick);
  background:var(--white);
}
.media-grid{
  display:grid;grid-template-columns:1fr 1fr;
  gap:var(--sp-md);margin-top:var(--sp-lg);
}
.media-card{
  border:var(--border-cartoon);border-radius:var(--radius-md);
  overflow:hidden;
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);
  /* TEMA 18 */
  transition:transform var(--transition),box-shadow var(--transition);
  background:var(--gray-100);
}
.media-card:hover{transform:translate(-4px,-4px);box-shadow:var(--shadow-hover);}
.media-header{
  background:var(--black);color:var(--white);
  padding:0.65rem var(--sp-sm);
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:0.72rem;
  letter-spacing:0.1em;text-transform:uppercase;
  border-bottom:var(--border-cartoon);
}
.media-header .dot{width:10px;height:10px;border-radius:50%;border:2px solid var(--white);}
.media-body{padding:var(--sp-sm);}

/* TEMA 20: VIDEO */
video{
  width:100%;display:block;
  border-radius:var(--radius-sm);
  /* TEMA 5: filtro B&W */
  filter:grayscale(100%) contrast(1.05);
  border:2px solid var(--gray-300);
  /* TEMA 18 */
  transition:filter 0.4s ease;
}
video:hover{filter:grayscale(0%);}

/* TEMA 21: AUDIO */
.audio-visual{
  background:var(--black);border-radius:var(--radius-sm);
  padding:var(--sp-md);text-align:center;
  margin-bottom:var(--sp-sm);border:2px solid var(--gray-700);
}
.waveform{display:flex;align-items:center;justify-content:center;gap:3px;height:48px;}
.waveform span{
  display:block;width:4px;background:var(--white);border-radius:2px;
  /* TEMA 23: ANIMACIÓN */
  animation:waveBar 1.2s ease-in-out infinite alternate;
}
.waveform span:nth-child(1){height:20%;animation-delay:0.0s;}
.waveform span:nth-child(2){height:45%;animation-delay:0.1s;}
.waveform span:nth-child(3){height:70%;animation-delay:0.2s;}
.waveform span:nth-child(4){height:90%;animation-delay:0.3s;}
.waveform span:nth-child(5){height:60%;animation-delay:0.4s;}
.waveform span:nth-child(6){height:80%;animation-delay:0.5s;}
.waveform span:nth-child(7){height:50%;animation-delay:0.35s;}
.waveform span:nth-child(8){height:75%;animation-delay:0.25s;}
.waveform span:nth-child(9){height:40%;animation-delay:0.15s;}
.waveform span:nth-child(10){height:25%;animation-delay:0.05s;}
audio{width:100%;display:block;margin-top:var(--sp-xs);filter:grayscale(1);}

/* TEMA 17: IFRAME */
.iframe-wrapper{
  position:relative;padding-bottom:56.25%;height:0;overflow:hidden;
  border-radius:var(--radius-sm);border:2px solid var(--gray-300);
}
.iframe-wrapper iframe{
  position:absolute;inset:0;width:100%;height:100%;border:0;
  /* TEMA 5: filtro */
  filter:grayscale(100%);
  /* TEMA 18 */
  transition:filter 0.4s ease;
}
.iframe-wrapper:hover iframe{filter:grayscale(0%);}

/* TEMA 3: figure/figcaption */
figure{margin:0;position:relative;}
figcaption{
  font-family:var(--font-mono);font-size:0.72rem;
  color:var(--gray-500);padding:6px var(--sp-sm);
  letter-spacing:0.05em;border-top:1px solid var(--gray-200);
}

/* Galería */
.gallery-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:var(--sp-sm);margin-top:var(--sp-md);
}
.gallery-item{
  position:relative;overflow:hidden;
  border:var(--border-cartoon);border-radius:var(--radius-sm);
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);
  aspect-ratio:4/3;background:var(--gray-200);
}
.gallery-item img{
  width:100%;height:100%;object-fit:cover;display:block;
  /* TEMA 5 */
  filter:grayscale(100%) contrast(1.1);
  /* TEMA 15+18 */
  transition:transform 0.4s var(--transition),filter 0.4s ease;
}
.gallery-item:hover img{
  /* TEMA 15: TRANSFORM */
  transform:scale(1.1);filter:grayscale(30%) contrast(1.1);
}
.gallery-overlay{
  position:absolute;inset:0;
  /* TEMA 22: transparencia */
  background:linear-gradient(to top,rgba(0,0,0,0.75) 0%,transparent 60%);
  opacity:0;
  transition:opacity 0.3s ease;
  display:flex;align-items:flex-end;padding:var(--sp-sm);
}
.gallery-item:hover .gallery-overlay{opacity:1;}
.gallery-overlay span{color:var(--white);font-family:var(--font-mono);font-size:0.7rem;letter-spacing:0.08em;}

/* =====================================================
   TEMA 16: FORMULARIOS
   ===================================================== */
.contact-form-section{
  padding:var(--sp-2xl) 0;
  border-bottom:var(--border-thick);
  background:var(--gray-100);
}
.form-layout{
  display:grid;grid-template-columns:1fr 1.2fr;
  gap:var(--sp-xl);align-items:start;
}
.form-info h3{font-family:var(--font-display);font-size:2rem;margin-bottom:var(--sp-md);}
.form-info p{color:var(--gray-600);margin-bottom:var(--sp-md);}
.form-info-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:var(--sp-sm);}
.form-info-list li{display:flex;align-items:center;gap:10px;font-size:0.9rem;color:var(--gray-700);}
.icon-check{
  width:28px;height:28px;border:var(--border-cartoon);
  border-radius:var(--radius-sm);background:var(--black);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  font-size:0.75rem;flex-shrink:0;
}
/* TEMA 16: form */
.contact-form{
  background:var(--white);border:var(--border-thick);
  border-radius:var(--radius-lg);padding:var(--sp-lg);
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);
}
fieldset{
  border:var(--border-cartoon);border-radius:var(--radius-md);
  padding:var(--sp-md);margin-bottom:var(--sp-md);
  background:var(--gray-100);
}
legend{
  font-family:var(--font-mono);font-weight:700;font-size:0.75rem;
  letter-spacing:0.12em;text-transform:uppercase;
  padding:0 8px;color:var(--black);background:var(--white);
  border:2px solid var(--black);border-radius:var(--radius-sm);
}
.form-group{margin-bottom:var(--sp-md);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-sm);}
label{
  display:block;font-weight:700;font-size:0.82rem;
  letter-spacing:0.05em;text-transform:uppercase;
  color:var(--black);margin-bottom:6px;
}
input[type="text"],input[type="email"],input[type="tel"],input[type="date"],
input[type="time"],input[type="url"],input[type="number"],
input[type="file"],textarea,select{
  width:100%;padding:0.75rem 1rem;
  border:var(--border-cartoon);border-radius:var(--radius-sm);
  font-family:var(--font-body);font-size:0.95rem;
  background:var(--white);color:var(--black);
  /* TEMA 18 */
  transition:box-shadow var(--transition),transform var(--transition);
  outline:none;
}
input:focus,textarea:focus,select:focus{
  box-shadow:4px 4px 0 var(--black);transform:translate(-2px,-2px);
}
textarea{resize:vertical;min-height:110px;}
input[type="range"]{
  -webkit-appearance:none;width:100%;height:6px;
  border:none;border-radius:3px;
  background:linear-gradient(to right,var(--black) 0%,var(--black) var(--progress,10%),var(--gray-300) var(--progress,10%),var(--gray-300) 100%);
  cursor:pointer;padding:0;transform:none;box-shadow:none;
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;
  background:var(--white);border:var(--border-thick);
  border-radius:50%;cursor:pointer;
  transition:transform var(--transition);
  box-shadow:2px 2px 0 var(--black);
}
input[type="range"]::-webkit-slider-thumb:hover{transform:scale(1.3);}
#presupuesto-valor{
  font-family:var(--font-mono);font-weight:700;
  color:var(--black);margin-left:8px;font-size:1rem;
}
.check-group,.radio-group{display:flex;flex-wrap:wrap;gap:var(--sp-sm);margin-top:8px;}
.check-item,.radio-item{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.9rem;}
input[type="checkbox"],input[type="radio"]{
  width:20px;height:20px;border:var(--border-cartoon);
  border-radius:var(--radius-sm);cursor:pointer;
  accent-color:var(--black);flex-shrink:0;
}
input[type="radio"]{border-radius:50%;}
.form-actions{display:flex;gap:var(--sp-sm);margin-top:var(--sp-md);}
.btn-primary,.btn-secondary{
  padding:0.85rem 2rem;border:var(--border-thick);border-radius:var(--radius-sm);
  font-family:var(--font-body);font-weight:800;font-size:0.85rem;
  text-transform:uppercase;letter-spacing:0.1em;cursor:pointer;
  /* TEMA 8 */
  box-shadow:var(--shadow-cartoon);
  /* TEMA 18 */
  transition:transform var(--transition),box-shadow var(--transition);
}
.btn-primary{background:var(--black);color:var(--white);}
.btn-secondary{background:var(--white);color:var(--black);}
/* TEMA 15: TRANSFORM */
.btn-primary:hover,.btn-secondary:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow-hover);}
.btn-primary:active,.btn-secondary:active{transform:translate(2px,2px);box-shadow:var(--shadow-pressed);}

/* =====================================================
   CTA STRIP — TEMA 22: DEGRADADOS + TRANSPARENCIAS
   ===================================================== */
.cta-strip{
  padding:var(--sp-2xl) 0;
  /* TEMA 22 */
  background:linear-gradient(135deg,var(--black) 0%,var(--gray-800) 50%,var(--gray-900) 100%);
  border-bottom:var(--border-thick);text-align:center;
  position:relative;overflow:hidden;
}
.cta-strip::before{
  content:'';position:absolute;inset:0;
  /* TEMA 22: transparencia diagonal */
  background:repeating-linear-gradient(-45deg,transparent,transparent 20px,rgba(255,255,255,0.02) 20px,rgba(255,255,255,0.02) 40px);
  pointer-events:none;
}
.cta-strip h2{
  font-family:var(--font-display);
  font-size:clamp(2rem,5vw,4rem);color:var(--white);
  margin-bottom:var(--sp-sm);
  /* TEMA 23 */
  animation:pulse 3s ease-in-out infinite;
}
.cta-strip p{color:var(--gray-400);margin-bottom:var(--sp-lg);font-size:1.05rem;}

/* =====================================================
   TEMA 23: ANIMACIONES
   ===================================================== */
@keyframes heroSlideUp{
  from{opacity:0;transform:translateY(40px);}
  to{opacity:1;transform:translateY(0);}
}
@keyframes waveBar{
  from{transform:scaleY(0.4);}
  to{transform:scaleY(1);}
}
@keyframes pulse{
  0%,100%{opacity:1;}50%{opacity:0.75;}
}
@keyframes marquee{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(30px);}
  to{opacity:1;transform:translateY(0);}
}
@keyframes spinIn{
  from{transform:rotate(-180deg) scale(0);opacity:0;}
  to{transform:rotate(0deg) scale(1);opacity:1;}
}

/* Scroll reveal */
.reveal{
  opacity:0;transform:translateY(30px);
  /* TEMA 18 */
  transition:opacity 0.7s cubic-bezier(0.22,1,0.36,1),transform 0.7s cubic-bezier(0.22,1,0.36,1);
}
.reveal.visible{opacity:1;transform:translateY(0);}
.reveal-delay-1{transition-delay:0.1s;}
.reveal-delay-2{transition-delay:0.2s;}
.reveal-delay-3{transition-delay:0.3s;}
.reveal-delay-4{transition-delay:0.4s;}

/* =====================================================
   FOOTER
   ===================================================== */
footer{
  background:var(--black);color:var(--white);
  border-top:var(--border-thick);
  padding:var(--sp-xl) 0 var(--sp-md);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:var(--sp-lg);
  padding-bottom:var(--sp-lg);
  border-bottom:1px solid var(--gray-800);
  margin-bottom:var(--sp-md);
}
.footer-brand .logo-footer{
  font-family:var(--font-display);font-size:2.2rem;
  letter-spacing:0.04em;margin-bottom:var(--sp-sm);
}
.footer-brand p{font-size:0.9rem;color:var(--gray-400);max-width:240px;line-height:1.6;}
.footer-col h4{
  font-family:var(--font-mono);font-size:0.7rem;
  letter-spacing:0.15em;text-transform:uppercase;
  color:var(--gray-500);margin-bottom:var(--sp-sm);
}
/* TEMA 3: ENLACES */
.footer-col a{
  display:block;color:var(--gray-300);text-decoration:none;
  font-size:0.9rem;margin-bottom:8px;
  /* TEMA 18 */
  transition:color var(--transition),transform var(--transition);
}
.footer-col a:hover{color:var(--white);transform:translateX(4px);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:var(--sp-sm);
}
.footer-bottom p{font-size:0.8rem;color:var(--gray-600);font-family:var(--font-mono);}

/* TEMA 11: FLOAT */
.float-demo::after{content:'';display:table;clear:both;}
.float-left{float:left;margin:0 var(--sp-md) var(--sp-sm) 0;}
.float-right{float:right;margin:0 0 var(--sp-sm) var(--sp-md);}

/* TEMA 6: FAVICON — en HTML head */
/* TEMA 7: border-radius helpers */
.rounded-sm{border-radius:var(--radius-sm);}
.rounded-md{border-radius:var(--radius-md);}
.rounded-lg{border-radius:var(--radius-lg);}
.rounded-xl{border-radius:var(--radius-xl);}
.rounded-full{border-radius:9999px;}

a{color:inherit;}
img{max-width:100%;height:auto;}

/* =====================================================
   TEMA 24: SVG (GRÁFICOS VECTORIALES)
   ===================================================== */
.svg-section {
  padding: var(--sp-2xl) 0;
  border-bottom: var(--border-thick);
  background: var(--gray-100);
}
.svg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}
.svg-card {
  border: var(--border-cartoon);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-cartoon);
  overflow: hidden;
  background: var(--white);
  transition: transform var(--transition), box-shadow var(--transition);
  margin: 0;
}
.svg-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow-hover);
}
.svg-card svg {
  width: 100%;
  height: auto;
  display: block;
}
.svg-card figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gray-500);
  padding: 8px var(--sp-sm);
  border-top: 2px solid var(--gray-200);
}

/* =====================================================
   TEMA 25: CANVAS
   ===================================================== */
.canvas-section {
  padding: var(--sp-2xl) 0;
  border-bottom: var(--border-thick);
  background: var(--white);
}
.canvas-wrapper {
  border: var(--border-cartoon);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-cartoon);
  overflow: hidden;
  background: var(--white);
}
.canvas-controls {
  background: var(--black);
  padding: 0.65rem var(--sp-sm);
  display: flex;
  gap: var(--sp-sm);
  border-bottom: var(--border-cartoon);
}
.canvas-controls .btn-secondary {
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  box-shadow: 2px 2px 0 var(--gray-300);
}
.canvas-controls .btn-secondary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--gray-300);
}
#grafico-canvas {
  width: 100%;
  height: auto;
  display: block;
  cursor: pointer;
}
.canvas-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray-500);
  padding: 8px var(--sp-sm);
  border-top: 1px solid var(--gray-200);
  letter-spacing: 0.04em;
}

/* =====================================================
   TEMA 27: CONTENIDO EDITABLE
   ===================================================== */
.editable-section {
  padding: var(--sp-2xl) 0;
  border-bottom: var(--border-thick);
  background: var(--gray-100);
}
.editable-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
  margin-bottom: var(--sp-md);
}
.editable-card {
  background: var(--white);
  border: var(--border-cartoon);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-cartoon);
  min-height: 220px;
  outline: none;
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: text;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--black);
  line-height: 1.7;
}
.editable-card:focus {
  box-shadow: var(--shadow-hover);
  transform: translate(-2px, -2px);
  border-color: var(--black);
}
.editable-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: var(--sp-sm);
  outline: none;
  cursor: text;
}
.editable-card ul,
.editable-card ol {
  padding-left: 1.4rem;
  margin-top: var(--sp-sm);
}
.editable-card li { margin-bottom: 4px; }
.editable-card::before {
  content: 'Editable';
  position: absolute;
  top: 10px; right: 12px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-400);
  pointer-events: none;
}
.editable-card { position: relative; }
.editable-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
}