/* 
  LBR Telecom - CSS Design System & Styles
  Aesthetics: Premium, Modern, Industrial, High-Tech
  Fonts: Boska (Serif Display), Satoshi (Geometric Sans-Serif)
*/

@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700,900&f[]=boska@400,500,700&display=swap');

/* --- DESIGN SYSTEM & TOKENS --- */
:root, [data-theme="light"] {
  /* HSL Color Palette - Light Theme (Branding LBR Telecom: Navy & Royal Blue) */
  --h-primary: 217;
  --s-primary: 95%;
  --l-primary: 41%; /* Royal Blue #0050d0 */
  
  --color-primary: hsl(var(--h-primary), var(--s-primary), var(--l-primary));
  --color-primary-hover: hsl(var(--h-primary), var(--s-primary), 33%);
  --color-primary-active: hsl(var(--h-primary), var(--s-primary), 25%);
  --color-primary-light: hsl(var(--h-primary), 80%, 95%);
  
  --color-accent: hsl(216, 83%, 58%); /* Sky Blue #4586ed */
  --color-accent-hover: hsl(216, 83%, 50%);
  --color-success: hsl(142, 60%, 36%); /* Safety green */
  
  --color-bg: hsl(210, 25%, 98%); /* Off-white Ice Blue #f4f7fa */
  --color-surface: hsl(0, 0%, 100%); /* Pure white surface */
  --color-surface-card: hsl(0, 0%, 100%);
  --color-surface-offset: hsl(210, 20%, 94%); /* Light Slate grey #e2e8f0 */
  --color-surface-glass: rgba(255, 255, 255, 0.75);
  
  --color-text: hsl(220, 50%, 12%); /* Deep Navy Text #0a1128 */
  --color-text-muted: hsl(215, 20%, 40%); /* Slate grey text */
  --color-text-faint: hsl(215, 16%, 60%);
  --color-text-inverse: hsl(210, 25%, 98%);
  
  --color-border: hsl(214, 32%, 91%);
  --color-divider: hsl(214, 32%, 88%);
  
  --shadow-sm: 0 2px 4px rgba(10, 17, 40, 0.03);
  --shadow-md: 0 12px 32px rgba(10, 17, 40, 0.05);
  --shadow-lg: 0 24px 64px rgba(10, 17, 40, 0.08);
  --shadow-glow: 0 0 20px rgba(0, 80, 208, 0.15);

  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-shadow: 0 8px 32px 0 rgba(10, 17, 40, 0.03);
}

[data-theme="dark"] {
  /* HSL Color Palette - Dark Theme (High-tech Slate & Glowing Blue) */
  --l-primary: 56%; /* Bright royal blue for contrast */
  --color-primary: hsl(var(--h-primary), var(--s-primary), var(--l-primary));
  --color-primary-hover: hsl(var(--h-primary), var(--s-primary), 64%);
  --color-primary-active: hsl(var(--h-primary), var(--s-primary), 48%);
  --color-primary-light: hsl(var(--h-primary), 45%, 12%);
  
  --color-accent: hsl(216, 95%, 68%); /* Glowing Sky Blue */
  --color-accent-hover: hsl(216, 95%, 76%);
  --color-success: hsl(142, 60%, 50%);
  
  --color-bg: hsl(222, 47%, 6%); /* Deep slate navy #020617 */
  --color-surface: hsl(222, 47%, 9%); /* Deep surface */
  --color-surface-card: hsl(222, 40%, 11%);
  --color-surface-offset: hsl(222, 40%, 15%);
  --color-surface-glass: rgba(2, 6, 23, 0.75);
  
  --color-text: hsl(210, 40%, 98%); /* Off-white Ice Blue */
  --color-text-muted: hsl(215, 20%, 75%);
  --color-text-faint: hsl(215, 12%, 50%);
  --color-text-inverse: hsl(222, 47%, 6%);
  
  --color-border: hsl(222, 30%, 18%);
  --color-divider: hsl(222, 30%, 13%);
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(0, 80, 208, 0.35);

  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

/* Typography Scale */
:root {
  --font-display: 'Boska', Georgia, serif;
  --font-body: 'Satoshi', Inter, sans-serif;
  
  --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 + 0.5vw, 1.375rem);
  --text-xl: clamp(1.375rem, 1.2rem + 0.8vw, 1.85rem);
  --text-2xl: clamp(1.85rem, 1.5rem + 1.8vw, 2.85rem);
  --text-3xl: clamp(2.35rem, 1.8rem + 3.2vw, 4.25rem);
  --text-hero: clamp(2.85rem, 2rem + 5.5vw, 5.85rem);
  
  /* Spacing Scale */
  --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;
  
  /* Border Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms ease;
  
  --content-width: 1200px;
}

/* --- GENERAL RESET & BASE --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
  background-color: var(--color-bg);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Focus Indicator styling for accessibility */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1.5rem;
  top: -4rem;
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  transition: top var(--transition-smooth);
}

.skip-link:focus {
  top: 1.5rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* --- LAYOUT UTILITIES --- */
.container {
  width: min(calc(100% - 2.5rem), var(--content-width));
  margin-inline: auto;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  text-align: center;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  box-shadow: var(--shadow-md), 0 0 20px rgba(226, 110, 48, 0.4);
}

.btn-secondary {
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--color-surface-offset);
  border-color: var(--color-text-faint);
}

/* --- EYEBROW & HEADINGS --- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  width: fit-content;
}

.eyebrow-accent {
  background-color: rgba(226, 110, 48, 0.12);
  color: var(--color-accent);
}

.section-heading {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.section-heading h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: 1.1;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.section-heading p {
  max-width: 60ch;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

/* --- GLASSMORPHIC PANELS --- */
.glass-panel {
  background: var(--color-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* --- HEADER & NAVIGATION --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-divider);
  transition: transform var(--transition-smooth), background-color var(--transition-smooth);
}

/* Read Progress Bar */
.progress-bar-container {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-md);
  font-weight: 900;
  letter-spacing: 0.01em;
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth);
}

.brand:hover .brand-mark {
  transform: rotate(10deg) scale(1.05);
}

.brand-mark svg {
  width: 1.6rem;
  height: 1.6rem;
}

.nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding-block: 0.25rem;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-smooth);
}

.nav a:hover {
  color: var(--color-text);
}

.nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle, .menu-toggle {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  display: grid;
  place-items: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  color: var(--color-text);
}

.theme-toggle:hover, .menu-toggle:hover {
  background-color: var(--color-surface-offset);
  border-color: var(--color-text-faint);
  transform: scale(1.05);
}

.theme-toggle svg, .menu-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-6);
  padding-top: var(--space-2);
  transition: all var(--transition-smooth);
}

.mobile-nav.open {
  display: grid;
  gap: var(--space-2);
  animation: slideDown 250ms ease-out forwards;
}

.mobile-nav a {
  padding: 0.85rem 1rem;
  color: var(--color-text-muted);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.mobile-nav a:hover {
  background-color: var(--color-surface-offset);
  color: var(--color-text);
  padding-left: 1.25rem;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- MAIN SECTIONS --- */
main section {
  padding-block: clamp(var(--space-12), 10vw, var(--space-28));
  position: relative;
}

.band {
  background-color: var(--color-surface);
}

/* --- HERO SECTION --- */
.hero {
  padding-top: clamp(var(--space-12), 8vw, var(--space-24));
  overflow: hidden;
}

/* Futuristic background beams mimicking optical fiber signals */
.hero__beams {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.45;
}

.hero__beam {
  position: absolute;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  height: 1px;
  width: 150px;
  animation: travelHorizontal 6s infinite linear;
}

.hero__beam-1 { top: 15%; left: -150px; animation-duration: 7s; }
.hero__beam-2 { top: 45%; left: -150px; animation-duration: 9s; animation-delay: 2s; }
.hero__beam-3 { top: 75%; left: -150px; animation-duration: 5s; animation-delay: 1s; }

[data-theme="dark"] .hero__beams {
  opacity: 0.7;
}

.hero__beam::after {
  content: '';
  position: absolute;
  right: 0;
  top: -2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent), 0 0 20px var(--color-accent);
}

@keyframes travelHorizontal {
  0% { left: -150px; }
  100% { left: 100vw; }
}

.hero__grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  display: grid;
  gap: var(--space-6);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: 0.95;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.hero h1 span {
  display: block;
  font-family: var(--font-body);
  font-size: 0.45em;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.hero p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 50ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-2);
}

/* Client logos bar */
.clients-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-10);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}

.clients-strip div {
  padding: 0.85rem var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.clients-strip div:hover {
  transform: translateY(-3px);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Hero Panel (Metrics Display) */
.hero__panel {
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 5vw, var(--space-10));
  position: relative;
  overflow: hidden;
}

.hero__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(1, 105, 111, 0.05), transparent 60%, rgba(226, 110, 48, 0.05));
  pointer-events: none;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  position: relative;
  z-index: 1;
}

.hero-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.hero-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.hero-card strong {
  display: block;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: var(--space-1);
}

.hero-card span {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- ABOUT SECTION --- */
.about-grid {
  display: grid;
  gap: var(--space-8);
}

.about-copy {
  display: grid;
  gap: var(--space-4);
}

.about-copy p {
  color: var(--color-text-muted);
}

.about-proof {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}

.stat-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.stat-card .card-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.5rem;
  background-color: rgba(226, 110, 48, 0.1);
  color: var(--color-accent);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
}

.stat-card h3 {
  font-size: var(--text-md);
  margin-bottom: var(--space-2);
  font-weight: 700;
}

.stat-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- SERVICES SECTION --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-6);
}

.service-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.service-card .card-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.75rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: grid;
  place-items: center;
}

.service-card .card-icon svg {
  width: 1.75rem;
  height: 1.75rem;
}

.service-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.2;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: auto;
}

.service-card ul {
  list-style: none;
  display: grid;
  gap: var(--space-2);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
}

.service-card li {
  position: relative;
  padding-left: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.service-card li svg {
  position: absolute;
  left: 0;
  top: 0.25rem;
  width: 1rem;
  height: 1rem;
  color: var(--color-accent);
}

/* --- "LBR EM CAMPO" - FILTERABLE PORTFOLIO GALLERY --- */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  justify-content: center;
}

.portfolio-filter-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.portfolio-filter-btn:hover {
  background-color: var(--color-surface-offset);
}

.portfolio-filter-btn.active {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

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

.portfolio-item {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
}

.portfolio-item.hidden {
  display: none;
}

.portfolio-item:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.portfolio-img-container {
  position: relative;
  aspect-ratio: 4/5; /* Good vertical ratio for these photos */
  overflow: hidden;
  cursor: pointer;
  background-color: var(--color-surface-offset);
}

.portfolio-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.portfolio-item:hover .portfolio-img-container img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(33, 30, 27, 0.9) 0%, rgba(33, 30, 27, 0.4) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-5);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay span {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.portfolio-overlay h3 {
  color: #fff;
  font-size: var(--text-md);
  margin-bottom: var(--space-2);
}

.portfolio-zoom-icon {
  align-self: flex-start;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
  margin-top: var(--space-2);
}

.portfolio-zoom-icon svg {
  width: 1rem;
  height: 1rem;
}

.portfolio-details {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-2);
}

.portfolio-details .tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
}

.portfolio-details h3 {
  font-size: var(--text-md);
  font-weight: 700;
}

.portfolio-details p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- LIGHTBOX MODAL --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: rgba(16, 15, 17, 0.95);
  display: none;
  place-items: center;
  padding: var(--space-6);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.lightbox.open {
  display: grid;
  opacity: 1;
}

.lightbox-content {
  max-width: 900px;
  width: 100%;
  display: grid;
  gap: var(--space-6);
  position: relative;
}

.lightbox-close {
  position: absolute;
  top: -2.5rem;
  right: 0;
  color: #fff;
  font-size: var(--text-md);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.lightbox-img-wrapper {
  background-color: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: 70vh;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 80px rgba(0,0,0,0.8);
}

.lightbox-img-wrapper img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.lightbox-text {
  color: #fff;
  text-align: center;
  max-width: 600px;
  margin-inline: auto;
}

.lightbox-text span {
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: var(--space-1);
}

.lightbox-text h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.lightbox-text p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- TECHNICAL DIAGNOSTICS & SURVEY SECTION --- */
.survey-card {
  max-width: 800px;
  margin-inline: auto;
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 6vw, var(--space-12));
}

.survey-header {
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-5);
  margin-bottom: var(--space-6);
}

.survey-progress-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.survey-progress-bar-bg {
  flex-grow: 1;
  height: 6px;
  background-color: var(--color-surface-offset);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.survey-progress-bar {
  height: 100%;
  width: 33.3%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-smooth);
}

.survey-step {
  display: none;
}

.survey-step.active {
  display: grid;
  gap: var(--space-6);
  animation: fadeIn 300ms ease forwards;
}

.survey-step h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.3;
}

.survey-options {
  display: grid;
  gap: var(--space-3);
}

.survey-option {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.survey-option:hover {
  background-color: var(--color-surface-offset);
  border-color: var(--color-text-faint);
}

.survey-option input[type="radio"],
.survey-option input[type="checkbox"] {
  margin-top: 0.25rem;
  accent-color: var(--color-primary);
  width: 1.15rem;
  height: 1.15rem;
}

.survey-option-text {
  display: grid;
  gap: var(--space-1);
}

.survey-option-text strong {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 700;
}

.survey-option-text span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Checked state styling for options */
.survey-option.selected {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.survey-footer {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
  margin-top: var(--space-6);
}

/* Diagnostic Results Box */
.survey-result-box {
  background-color: var(--color-surface-offset);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border-left: 4px solid var(--color-accent);
  display: grid;
  gap: var(--space-4);
}

.survey-result-box h4 {
  font-size: var(--text-md);
  color: var(--color-accent);
  font-weight: 700;
}

.survey-result-box ul {
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.survey-result-box li {
  font-size: var(--text-sm);
  color: var(--color-text);
  position: relative;
  padding-left: var(--space-5);
}

.survey-result-box li svg {
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 1rem;
  height: 1rem;
  color: var(--color-primary);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- CASES & PREDICTABILITY --- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-6);
}

.case-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.case-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.case-card .case-meta {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.case-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.2;
}

.case-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.case-card ul {
  list-style: none;
  display: grid;
  gap: var(--space-2);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
  margin-top: auto;
}

.case-card li {
  position: relative;
  padding-left: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.case-card li svg {
  position: absolute;
  left: 0;
  top: 0.25rem;
  width: 0.9rem;
  height: 0.9rem;
  color: var(--color-primary);
}

/* --- DIFFERENTIALS SECTION --- */
.differentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.differential {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.differential:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.differential .diff-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-4);
}

.differential h3 {
  font-size: var(--text-md);
  margin-bottom: var(--space-2);
  font-weight: 700;
}

.differential p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- DIRECTIVES / PILARES --- */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.pillar {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: var(--space-4);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.pillar:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.pillar .pillar-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: rgba(226, 110, 48, 0.1);
  color: var(--color-accent);
  display: grid;
  place-items: center;
}

.pillar h3 {
  font-size: var(--text-lg);
  font-weight: 700;
}

.pillar p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- INDICATORS / METRICS --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.metric {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: var(--space-2);
  transition: transform var(--transition-smooth);
}

.metric:hover {
  transform: translateY(-4px);
}

.metric strong {
  font-size: var(--text-2xl);
  color: var(--color-primary);
  font-weight: 700;
}

.metric p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- FAQ ACCORDION --- */
.faq-accordion {
  max-width: 800px;
  margin-inline: auto;
  display: grid;
  gap: var(--space-3);
}

.faq-item {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-smooth);
}

.faq-item:hover {
  border-color: var(--color-primary);
}

.faq-trigger {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  text-align: left;
  font-weight: 700;
  font-size: var(--text-sm);
}

.faq-trigger svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-primary);
  transition: transform var(--transition-smooth);
}

.faq-item.open .faq-trigger svg {
  transform: rotate(180deg);
}

.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth), padding-block var(--transition-smooth);
  padding-inline: var(--space-6);
}

.faq-item.open .faq-panel {
  padding-bottom: var(--space-5);
  max-height: 300px; /* Big enough value for content */
}

.faq-panel p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
}

/* --- CONTACT SECTION --- */
.contact-grid {
  display: grid;
  gap: var(--space-8);
}

.contact-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: var(--space-6);
}

.contact-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-3);
}

.contact-details {
  display: grid;
  gap: var(--space-4);
}

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

.contact-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.5rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 1.1rem;
  height: 1.1rem;
}

.contact-text {
  display: grid;
  gap: 2px;
}

.contact-text span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.contact-text p, .contact-text a {
  font-size: var(--text-sm);
  font-weight: 700;
}

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

.cta-box {
  padding: clamp(var(--space-8), 6vw, var(--space-14));
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary), hsl(var(--h-primary), var(--s-primary), 12%));
  color: #fff;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  display: grid;
  gap: var(--space-6);
  position: relative;
  overflow: hidden;
}

.cta-box::after {
  content: "";
  position: absolute;
  right: -5rem;
  bottom: -5rem;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  background-color: var(--color-accent);
  opacity: 0.08;
  filter: blur(40px);
}

.cta-box h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: 1.1;
  max-width: 18ch;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 55ch;
  font-size: var(--text-md);
}

.cta-box .hero__actions {
  margin-top: 0;
}

/* --- FOOTER --- */
.footer {
  padding-block: var(--space-12);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-divider);
  transition: background-color var(--transition-smooth);
}

.footer-grid {
  display: grid;
  gap: var(--space-8);
}

.footer-brand-side {
  display: grid;
  gap: var(--space-4);
}

.footer-brand-side p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 40ch;
}

.footer-links-side {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.footer-col {
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.footer-col h4 {
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--color-text);
  font-weight: 900;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* --- FLOATING WHATSAPP BUTTON --- */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 90;
  background-color: #25d366;
  color: #fff;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition-fast);
  animation: pulseWhatsApp 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 1.75rem;
  height: 1.75rem;
  fill: currentColor;
}

@keyframes pulseWhatsApp {
  0% { transform: scale(1); box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4); }
  50% { transform: scale(1.05); box-shadow: 0 4px 20px rgba(37, 211, 102, 0.7); }
  100% { transform: scale(1); box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4); }
}

/* --- INTERSECTION OBSERVER REVEAL ANIMATIONS --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 800ms cubic-bezier(0.16, 1, 0.3, 1), transform 800ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Delay modifiers for sequential entry */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }

/* Reduced Motion Settings */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .whatsapp-float {
    animation: none;
  }
  .hero__beam {
    animation: none;
    display: none;
  }
}

/* --- MEDIA QUERIES (RESPONSIVENESS) --- */
@media (min-width: 600px) {
  .hero-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 860px) {
  .nav {
    display: flex;
  }
  .menu-toggle {
    display: none;
  }
  .mobile-nav {
    display: none !important;
  }
  
  .hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
  
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
  
  .contact-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }
  
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
  
  .footer-links-side {
    justify-items: end;
  }
  
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (max-width: 859px) {
  .clients-strip {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .clients-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-card-grid {
    grid-template-columns: 1fr;
  }
  .portfolio-filters {
    flex-direction: column;
    align-items: stretch;
  }
  .portfolio-filter-btn {
    text-align: center;
  }
}