/* ===== DESIGN TOKENS ===== */
/* Palette: steel-industrial — azul acero profundo + naranja ambar, transmitiendo solidez técnica */

:root,
[data-theme='light'] {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Surfaces */
  --color-bg: #f4f7f5;
  --color-surface: #ffffff;
  --color-surface-2: #f8fbf9;
  --color-surface-offset: #edf3ef;
  --color-divider: #d5e5da;
  --color-border: #c2d8c9;

  /* Text */
  --color-text: #162a1e;
  --color-text-muted: #4d6b57;
  --color-text-faint: #96b5a0;
  --color-text-inverse: #f4f7f5;

  /* Primary: Verde AES de México (logo) */
  --color-primary: #1a7a00;
  --color-primary-hover: #136000;
  --color-primary-active: #0d4500;
  --color-primary-highlight: #c8e8b8;

  /* Accent: Naranja ámbar energético */
  --color-accent: #e07b1a;
  --color-accent-hover: #c56612;
  --color-accent-active: #a8510d;
  --color-accent-highlight: #f9e5cc;

  /* Success */
  --color-success: #2a7a3a;
  --color-success-highlight: #cce5d1;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px oklch(0.2 0.05 240 / 0.08);
  --shadow-md: 0 4px 16px oklch(0.2 0.05 240 / 0.1);
  --shadow-lg: 0 12px 40px oklch(0.2 0.05 240 / 0.15);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Clash Display', 'Cabinet Grotesk', 'Inter', sans-serif;
  --font-body: 'General Sans', 'Satoshi', 'Inter', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #0d1510;
  --color-surface: #121e16;
  --color-surface-2: #17261b;
  --color-surface-offset: #1c2e21;
  --color-divider: #253b2b;
  --color-border: #2e4d36;
  --color-text: #d5e8da;
  --color-text-muted: #7aa385;
  --color-text-faint: #3f5f47;
  --color-text-inverse: #0d1510;
  --color-primary: #4daa6e;
  --color-primary-hover: #6abf85;
  --color-primary-active: #85d09a;
  --color-primary-highlight: #152b1c;
  --color-accent: #f09a45;
  --color-accent-hover: #f5b06a;
  --color-accent-active: #f8c48e;
  --color-accent-highlight: #3a2810;
  --color-success: #4aaa5a;
  --color-success-highlight: #1a3020;
  --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 40px oklch(0 0 0 / 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0d1510;
    --color-surface: #121e16;
    --color-surface-2: #17261b;
    --color-surface-offset: #1c2e21;
    --color-divider: #253b2b;
    --color-border: #2e4d36;
    --color-text: #d5e8da;
    --color-text-muted: #7aa385;
    --color-text-faint: #3f5f47;
    --color-text-inverse: #0d1510;
    --color-primary: #4daa6e;
    --color-primary-hover: #6abf85;
    --color-primary-active: #85d09a;
    --color-primary-highlight: #152b1c;
    --color-accent: #f09a45;
    --color-accent-hover: #f5b06a;
    --color-accent-active: #f8c48e;
    --color-accent-highlight: #3a2810;
    --color-success: #4aaa5a;
    --color-success-highlight: #1a3020;
    --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.3);
    --shadow-md: 0 4px 16px oklch(0 0 0 / 0.4);
    --shadow-lg: 0 12px 40px oklch(0 0 0 / 0.5);
  }
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
}

.container--narrow {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

/* ===== HEADER / NAV ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.logo-svg {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.logo-img {
  height: 42px;
  width: auto;
  flex-shrink: 0;
  object-fit: contain;
  /* Elimina el fondo blanco mezclando con el fondo del header */
  mix-blend-mode: multiply;
}

/* Modo oscuro: el multiply no funciona bien sobre fondos oscuros,
   usamos invert+hue para mantener el verde */
[data-theme='dark'] .logo-img {
  mix-blend-mode: normal;
  filter: brightness(0) invert(1) sepia(1) saturate(3) hue-rotate(80deg);
}

.logo-img--footer {
  height: 36px;
  mix-blend-mode: normal;
  filter: brightness(0) invert(1);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.logo-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.main-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.main-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Theme toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Mobile menu */
.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.menu-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    flex-direction: column;
    padding: var(--space-4);
    gap: var(--space-1);
    box-shadow: var(--shadow-md);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    width: 100%;
    padding: var(--space-3) var(--space-4);
  }
  .menu-toggle {
    display: flex;
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition-interactive);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-highlight);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-active) 0%, var(--color-primary) 50%, #1a5fa0 100%);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(13,69,0,0.92) 0%, rgba(13,69,0,0.75) 55%, rgba(13,69,0,0.5) 100%),
    radial-gradient(circle at 20% 50%, rgba(224,123,26,0.12) 0%, transparent 60%);
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 39px,
    rgba(255,255,255,0.8) 39px,
    rgba(255,255,255,0.8) 40px
  ),
  repeating-linear-gradient(
    90deg,
    transparent,
    transparent 39px,
    rgba(255,255,255,0.8) 39px,
    rgba(255,255,255,0.8) 40px
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: var(--space-24);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(224,123,26,0.2);
  border: 1px solid rgba(224,123,26,0.4);
  color: #f9c97a;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 14ch;
  margin-bottom: var(--space-6);
}

.hero h1 span {
  color: var(--color-accent);
}

.hero-desc {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.8);
  max-width: 48ch;
  margin-bottom: var(--space-10);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.btn-hero {
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(224,123,26,0.35);
}

.btn-hero:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(224,123,26,0.5);
}

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.4);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px solid rgba(255,255,255,0.12);
}

.hero-stat-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  margin-top: var(--space-1);
}

/* Hero graphic side */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-cert-badge {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(12px);
  max-width: 320px;
  width: 100%;
}

.cert-logo {
  width: 64px;
  height: 64px;
  background: var(--color-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.hero-cert-badge h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: #fff;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.hero-cert-badge p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  max-width: none;
  margin-bottom: var(--space-4);
}

.cert-tag {
  display: inline-block;
  background: rgba(224,123,26,0.2);
  border: 1px solid rgba(224,123,26,0.4);
  color: #f9c97a;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual { display: none; }
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== SECTION TITLES ===== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.7;
}

/* ===== SERVICES ===== */
.services-section {
  background: var(--color-surface);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-interactive);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-interactive);
}

.service-card:hover {
  border-color: var(--color-primary-highlight);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  color: var(--color-primary);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
}

/* ===== ABOUT ===== */
.about-section {
  background: var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-20));
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-img-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-svg-placeholder {
  opacity: 0.35;
}

.about-badge {
  position: absolute;
  bottom: -var(--space-4);
  right: -var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-lg);
  text-align: center;
  bottom: -20px;
  right: -20px;
}

.about-badge-year {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.about-badge-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.about-content .section-title {
  max-width: 20ch;
}

.about-features {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.about-feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.about-feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.about-feature-text strong {
  display: block;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.about-feature-text span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== CERTIFICATION ===== */
.cert-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  position: relative;
  overflow: hidden;
}

.cert-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 70% 50%, rgba(224,123,26,0.12) 0%, transparent 60%);
}

.cert-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.cert-inner .section-label {
  color: #f9c97a;
}

.cert-inner .section-label::before {
  background: #f9c97a;
}

.cert-inner .section-title {
  color: #fff;
}

.cert-inner .section-desc {
  color: rgba(255,255,255,0.75);
}

.cert-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(12px);
}

.cert-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.cert-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cert-card-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
}

.cert-card-header p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  max-width: none;
}

.cert-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cert-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.cert-detail-key {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.55);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.cert-detail-val {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  text-align: right;
}

@media (max-width: 768px) {
  .cert-inner {
    grid-template-columns: 1fr;
  }
}

/* ===== CONTACT ===== */
.contact-section {
  background: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: start;
  margin-top: var(--space-12);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-text strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.contact-item-text span,
.contact-item-text a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  max-width: none;
}

.contact-item-text a:hover {
  color: var(--color-primary);
}

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

.form-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding-block: var(--space-12) var(--space-8);
}

[data-theme='dark'] .site-footer {
  background: #080d18;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--space-8);
}

.footer-brand .logo-name {
  color: #fff;
}

.footer-brand .logo-tagline {
  color: rgba(255,255,255,0.5);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  margin-top: var(--space-4);
  max-width: 38ch;
}

.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
  max-width: none;
}

.footer-ema {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
}

.footer-ema-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* ===== PAGE TRANSITIONS ===== */
.page {
  display: none;
}
.page.active {
  display: block;
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* stagger */
.fade-up:nth-child(2) { transition-delay: 0.08s; }
.fade-up:nth-child(3) { transition-delay: 0.16s; }
.fade-up:nth-child(4) { transition-delay: 0.24s; }
.fade-up:nth-child(5) { transition-delay: 0.32s; }

/* ===== NORMAS SECTION ===== */
.norms-section {
  background: var(--color-bg);
}

.norms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.norm-pill {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: all var(--transition-interactive);
}

.norm-pill:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.norm-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.norm-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.norm-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ===== GASOLINERA BANNER ===== */
.gasolinera-banner {
  width: 100%;
  height: clamp(260px, 40vw, 480px);
  background-image: url('./assets/gasolinera.png');
  background-size: cover;
  background-position: center 60%;
  background-attachment: fixed;
  position: relative;
}

.gasolinera-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,69,0,0.78) 0%, rgba(13,69,0,0.45) 60%, rgba(0,0,0,0.2) 100%);
  display: flex;
  align-items: center;
}

.gasolinera-quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  max-width: 28ch;
  line-height: 1.3;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
  .gasolinera-banner {
    background-attachment: scroll;
  }
}

/* ===== WHATSAPP FLOTANTE ===== */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 999;
  background: #25d366;
  color: white;
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 700;
  transition: all var(--transition-interactive);
}

.whatsapp-float:hover {
  background: #1fba5a;
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(37,211,102,0.55);
}

.whatsapp-float-label {
  white-space: nowrap;
}

@media (max-width: 480px) {
  .whatsapp-float-label { display: none; }
  .whatsapp-float { padding: var(--space-4); border-radius: 50%; }
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  background: var(--color-success);
  color: #fff;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 9999;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}