/* ============================================================
   LPS Ingeniería — Design System & Styles
   Mobile-first | Dark Industrial Theme
   ============================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --clr-bg-primary: #0D0D0D;
  --clr-bg-secondary: #1A1A1A;
  --clr-bg-tertiary: #2D2D2D;
  --clr-bg-card: #1E1E1E;
  --clr-accent: #F5A623;
  --clr-accent-hover: #FFA500;
  --clr-accent-glow: rgba(245, 166, 35, 0.25);
  --clr-accent-subtle: rgba(245, 166, 35, 0.08);
  --clr-text-primary: #F0F0F0;
  --clr-text-secondary: #A0A0A0;
  --clr-text-muted: #6B6B6B;
  --clr-border: rgba(255, 255, 255, 0.08);
  --clr-border-accent: rgba(245, 166, 35, 0.3);
  --clr-whatsapp: #25D366;
  --clr-instagram: #E1306C;
  --clr-email: #4A90D9;

  /* Typography */
  --ff-heading: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --ff-body: 'Inter', 'Segoe UI', sans-serif;
  --fs-hero-title: clamp(2.2rem, 6vw, 4.5rem);
  --fs-section-title: clamp(1.6rem, 4vw, 2.8rem);
  --fs-card-title: clamp(1.2rem, 2.5vw, 1.6rem);
  --fs-body: clamp(0.95rem, 1.5vw, 1.1rem);
  --fs-small: 0.875rem;
  --fs-xs: 0.75rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --section-padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2rem);

  /* Layout */
  --max-width: 1200px;
  --header-height: 70px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 20px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 20px var(--clr-accent-glow);
  --shadow-btn: 0 4px 16px rgba(245, 166, 35, 0.3);
  --shadow-btn-hover: 0 6px 24px rgba(245, 166, 35, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  color: var(--clr-text-primary);
  background-color: var(--clr-bg-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--clr-accent-hover);
}

ul {
  list-style: none;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.section-label {
  font-family: var(--ff-heading);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  width: 30px;
  height: 2px;
  background: var(--clr-accent);
  display: inline-block;
}

.section-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-section-title);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--clr-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--fs-body);
  color: var(--clr-text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 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; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(13, 13, 13, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(13, 13, 13, 0.95);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--clr-text-primary);
  z-index: 1001;
}

.header-logo-icon {
  width: 40px;
  height: 40px;
}

.header-logo-text {
  font-family: var(--ff-heading);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-text-primary);
}

.header-logo-text span {
  color: var(--clr-accent);
}

/* Desktop Nav */
.header-nav {
  display: none;
}

.header-nav ul {
  display: flex;
  gap: var(--space-lg);
}

.header-nav a {
  font-family: var(--ff-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-accent);
  transition: width var(--transition-base);
}

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

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

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: rgba(13, 13, 13, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  transition: right var(--transition-slow);
  z-index: 999;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu a {
  font-family: var(--ff-heading);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--clr-accent);
  transform: translateX(8px);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: calc(var(--header-height) + 2rem) var(--space-sm) var(--space-xl);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.3);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13, 13, 13, 0.6) 0%,
    rgba(13, 13, 13, 0.4) 40%,
    rgba(13, 13, 13, 0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-logo {
  width: 130px;
  height: 130px;
  margin: 0 auto var(--space-md);
  animation: fadeInDown 0.8s ease-out;
}

.hero-logo svg {
  width: 100%;
  height: 100%;
}

.hero-credential {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-heading);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--clr-accent);
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--clr-border-accent);
  border-radius: 50px;
  background: var(--clr-accent-subtle);
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-credential svg {
  width: 16px;
  height: 16px;
  fill: var(--clr-accent);
}

.hero-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-hero-title);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  line-height: 1.1;
  color: var(--clr-text-primary);
  margin-bottom: var(--space-sm);
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

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

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  animation: fadeInUp 0.8s ease-out 0.5s both;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--ff-heading);
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.btn-primary {
  font-size: 1rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent-hover) 100%);
  color: var(--clr-bg-primary);
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-btn-hover);
  color: var(--clr-bg-primary);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  font-size: 0.9rem;
  padding: 0.85rem 1.75rem;
  background: transparent;
  color: var(--clr-accent);
  border: 1.5px solid var(--clr-border-accent);
}

.btn-secondary:hover {
  background: var(--clr-accent-subtle);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.7rem 1.5rem;
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.services {
  padding: var(--section-padding);
  background: var(--clr-bg-secondary);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-accent), transparent);
}

.services-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.services-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.service-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

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

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-sm);
  background: var(--clr-accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  transition: background var(--transition-base);
}

.service-card:hover .service-icon {
  background: rgba(245, 166, 35, 0.15);
}

.service-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--clr-accent);
}

.service-card h3 {
  font-family: var(--ff-heading);
  font-size: var(--fs-card-title);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--clr-text-primary);
  margin-bottom: var(--space-sm);
}

.service-card p {
  color: var(--clr-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.service-tag {
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: var(--clr-accent-subtle);
  border: 1px solid var(--clr-border-accent);
  border-radius: 50px;
  padding: 0.3rem 0.85rem;
}

/* ============================================================
   PROCESS SECTION
   ============================================================ */
.process {
  padding: var(--section-padding);
  background: var(--clr-bg-primary);
}

.process-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.process-header .section-subtitle {
  margin: 0 auto;
}

.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  position: relative;
}

.process-step {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--clr-accent-subtle);
  border: 2px solid var(--clr-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--clr-accent);
  position: relative;
}

.process-step:not(:last-child) .step-number::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: calc(var(--space-lg) + 4px);
  background: linear-gradient(180deg, var(--clr-accent), transparent);
}

.step-content h4 {
  font-family: var(--ff-heading);
  font-size: 1.15rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--clr-text-primary);
  margin-bottom: 0.35rem;
}

.step-content p {
  color: var(--clr-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.6;
}

/* ============================================================
   FORM SECTION
   ============================================================ */
.form-section {
  padding: var(--section-padding);
  background: var(--clr-bg-secondary);
  position: relative;
}

.form-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-accent), transparent);
}

.form-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.form-header .section-subtitle {
  margin: 0 auto;
}

.request-form {
  max-width: 700px;
  margin: 0 auto;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
}

.form-group-title {
  font-family: var(--ff-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-group-title svg {
  width: 18px;
  height: 18px;
  fill: var(--clr-accent);
}

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

.form-group label {
  display: block;
  font-family: var(--ff-heading);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  margin-bottom: 0.4rem;
}

.form-group label .required {
  color: var(--clr-accent);
  margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  color: var(--clr-text-primary);
  background: var(--clr-bg-secondary);
  border: 1px solid var(--clr-border);
  border-radius: var(--border-radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--clr-text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23A0A0A0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group select option {
  background: var(--clr-bg-secondary);
  color: var(--clr-text-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

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

.form-submit-btn {
  width: 100%;
  margin-top: var(--space-md);
  font-size: 1rem;
  padding: 1.1rem;
}

.form-note {
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
  margin-top: var(--space-sm);
}

/* Form validation styles */
.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not([value=""]),
.form-group textarea:invalid:not(:placeholder-shown) {
  border-color: #e74c3c;
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
  border-color: rgba(245, 166, 35, 0.4);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact {
  padding: var(--section-padding);
  background: var(--clr-bg-primary);
}

.contact-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.contact-header .section-subtitle {
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  max-width: 600px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all var(--transition-base);
}

.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.contact-card-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base);
}

.contact-card:hover .contact-card-icon {
  transform: scale(1.1);
}

.contact-card-icon svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

.contact-card--whatsapp .contact-card-icon {
  background: var(--clr-whatsapp);
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.contact-card--whatsapp:hover {
  border-color: rgba(37, 211, 102, 0.4);
}

.contact-card--instagram .contact-card-icon {
  background: linear-gradient(135deg, #833AB4, #E1306C, #F77737);
  box-shadow: 0 4px 15px rgba(225, 48, 108, 0.3);
}

.contact-card--instagram:hover {
  border-color: rgba(225, 48, 108, 0.4);
}

.contact-card--email .contact-card-icon {
  background: var(--clr-email);
  box-shadow: 0 4px 15px rgba(74, 144, 217, 0.3);
}

.contact-card--email:hover {
  border-color: rgba(74, 144, 217, 0.4);
}

.contact-card-info h4 {
  font-family: var(--ff-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--clr-text-primary);
  margin-bottom: 0.15rem;
}

.contact-card-info p {
  font-size: var(--fs-small);
  color: var(--clr-text-secondary);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  padding: var(--space-lg) var(--space-sm);
  background: var(--clr-bg-secondary);
  border-top: 1px solid var(--clr-border);
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
}

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

.footer-logo-text {
  font-family: var(--ff-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-text-primary);
}

.footer-logo-text span {
  color: var(--clr-accent);
}

.footer-credential {
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-md);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.footer-links a {
  color: var(--clr-text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
}

.footer-links a:hover {
  color: var(--clr-accent);
  transform: translateY(-2px);
}

.footer-links a svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.footer-copy {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
}

/* Floating WhatsApp button */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--clr-whatsapp);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 900;
  transition: all var(--transition-base);
  animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-whatsapp {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  }
  50% {
    box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1);
  }
}

@keyframes gear-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============================================================
   RESPONSIVE — Tablet (≥768px)
   ============================================================ */
@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl) var(--space-lg);
  }

  .process-step:not(:last-child) .step-number::after {
    display: none;
  }

  .form-row {
    grid-template-columns: 1fr 1fr;
  }

  .hero-cta-group {
    flex-direction: row;
    justify-content: center;
  }

  .contact-grid {
    max-width: 700px;
  }
}

/* ============================================================
   RESPONSIVE — Desktop (≥1024px)
   ============================================================ */
@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }

  .header-nav {
    display: block;
  }

  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero-logo {
    width: 160px;
    height: 160px;
  }

  .request-form {
    padding: var(--space-xl);
  }
}