/* =====================================================
   RAM – Landing Page Styles
   Agremiación de Rescatistas Industriales de Acacias Meta
   ===================================================== */

/* =================== DESIGN TOKENS =================== */
:root {
  --blue-dark:    #0d2561;
  --blue-primary: #1a3a8f;
  --blue-mid:     #1e50b5;
  --blue-light:   #d9e4ff;
  --orange:       #e87722;
  --orange-light: #f9a45c;
  --red:          #cc0000;
  --gold:         #d4a017;
  --white:        #ffffff;
  --off-white:    #f5f7fa;
  --text-dark:    #0f1932;
  --text-body:    #374151;
  --text-muted:   #6b7280;
  --border:       #e5e7eb;
  --shadow-sm:    0 2px 8px rgba(13, 37, 97, 0.08);
  --shadow-md:    0 8px 24px rgba(13, 37, 97, 0.12);
  --shadow-lg:    0 16px 48px rgba(13, 37, 97, 0.18);
  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    20px;
  --nav-height:   90px;
  --transition:   0.3s ease;
  --font-heading: 'Montserrat', sans-serif;
  --font-body:    'Open Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text-body);
  background-color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* =================== UTILITY CLASSES =================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(232, 119, 34, 0.1);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.accent-red {
  color: var(--red);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}

.btn-primary:hover {
  background: var(--orange-light);
  border-color: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 119, 34, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.7);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* Fade-in animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* =================== NAVBAR =================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--blue-primary);
  border-bottom: 3px solid var(--orange);
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: var(--blue-dark);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-img {
  width: 70px;
  height: 70px;
  border-radius: 8px;
  object-fit: contain;
  background: rgba(255,255,255,0.12);
  padding: 2px;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.hamburger:hover {
  background: rgba(255,255,255,0.1);
}

.bar {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--white);
  border-radius: 4px;
  transition: all 0.35s ease;
}

.hamburger.open .bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.hamburger.open .bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open .bar:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  backdrop-filter: blur(2px);
}

.nav-overlay.active {
  display: block;
}

/* =================== HERO =================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(160deg, rgba(13, 37, 97, 0.92) 0%, rgba(10, 20, 60, 0.88) 60%, rgba(232, 119, 34, 0.3) 100%),
    url('images/hero_bg.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(30, 80, 181, 0.25) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 40px 24px;
  max-width: 860px;
}

.hero-pre-title {
  font-family: var(--font-heading);
  font-size: clamp(0.95rem, 2.5vw, 1.25rem);
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.ram-big {
  font-size: clamp(5rem, 15vw, 11rem);
  display: inline-block;
  text-shadow: 0 0 60px rgba(204, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.8);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.6);
  font-size: 0.8rem;
  font-family: var(--font-heading);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* =================== SERVICIOS =================== */
.servicios {
  background: var(--white);
}

/* Featured service layout */
.service-featured {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 64px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.service-featured-img {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.service-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-featured:hover .service-featured-img img {
  transform: scale(1.04);
}

.service-featured-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--orange);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.service-featured-title {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  color: var(--text-dark);
  margin: 14px 0 18px;
  line-height: 1.25;
}

.service-featured-desc {
  font-size: 0.97rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 24px;
}

.service-included {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}

.service-included li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--text-body);
  font-weight: 500;
}

.service-included .fa-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--blue-primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  flex-shrink: 0;
}

/* Services grid (6 cards) */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-primary), var(--orange));
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-light);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--white);
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(26, 58, 143, 0.25);
}

.service-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.3;
}

.service-card-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* =================== QUIÉNES SOMOS =================== */
.quienes-somos {
  background: var(--off-white);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 64px;
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--white);
  margin-bottom: 24px;
  box-shadow: 0 8px 20px rgba(26, 58, 143, 0.3);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
}

.card-text {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.7;
}

.values-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.values-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-body);
}

.values-list .fa-check-circle {
  color: var(--blue-primary);
  font-size: 1rem;
  flex-shrink: 0;
}

/* Stats bar */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-primary));
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-lg);
  flex-wrap: wrap;
}

.stat-item {
  flex: 1;
  min-width: 140px;
  text-align: center;
  padding: 16px 24px;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: rgba(255,255,255,0.2);
}

/* =================== ACTUALIDAD =================== */
.actualidad {
  background: var(--white);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-img-wrapper {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.news-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .news-img-wrapper img {
  transform: scale(1.06);
}

.news-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--orange);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
}

.news-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.news-link {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--blue-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: gap var(--transition), color var(--transition);
}

.news-link:hover {
  color: var(--orange);
  gap: 10px;
}

/* =================== CONTÁCTENOS =================== */
.contactenos {
  background: var(--off-white);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 40px;
  align-items: start;
}

.contact-info {
  background: linear-gradient(160deg, var(--blue-dark), var(--blue-primary));
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  color: var(--white);
  box-shadow: var(--shadow-lg);
  height: fit-content;
}

.contact-info-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 36px;
}

.contact-details li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--orange);
  flex-shrink: 0;
}

.contact-details strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 3px;
}

.contact-details span {
  font-size: 0.95rem;
  color: var(--white);
}

.contact-social {
  display: flex;
  gap: 12px;
}

.contact-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  transition: all var(--transition);
}

.contact-social a:hover {
  background: var(--orange);
  transform: translateY(-3px);
}

/* Form */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
}

.form-group label {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.required {
  color: var(--red);
}

.form-group input,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--off-white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 13px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-mid);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(30, 80, 181, 0.12);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(204, 0, 0, 0.10);
}

.field-error {
  font-size: 0.8rem;
  color: var(--red);
  margin-top: 5px;
  min-height: 16px;
}

.btn-submit {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  margin-top: 6px;
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-loading {
  display: none;
}

.btn-submit.loading .btn-text,
.btn-submit.loading .btn-icon {
  display: none;
}

.btn-submit.loading .btn-loading {
  display: inline;
}

/* Feedback messages */
.form-success,
.form-error-msg {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  margin-top: 20px;
  font-size: 0.9rem;
}

.form-success {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #065f46;
}

.form-success .fa-circle-check {
  font-size: 1.5rem;
  color: #10b981;
  flex-shrink: 0;
}

.form-error-msg {
  background: rgba(204, 0, 0, 0.06);
  border: 1px solid rgba(204, 0, 0, 0.25);
  color: #7f1d1d;
}

.form-error-msg .fa-circle-exclamation {
  font-size: 1.5rem;
  color: var(--red);
  flex-shrink: 0;
}

.form-success[hidden],
.form-error-msg[hidden] {
  display: none !important;
}

/* =================== FOOTER =================== */
.footer {
  background: var(--blue-dark);
  color: var(--white);
  padding: 48px 0 28px;
  border-top: 3px solid var(--orange);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-logo {
  width: 52px;
  height: 52px;
  border-radius: 8px;
  object-fit: contain;
  background: rgba(255,255,255,0.12);
  padding: 2px;
}

.footer-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.08em;
}

.footer-tagline {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
}

.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

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

.footer-copy {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  margin-top: 8px;
  line-height: 1.6;
}

/* =================== BACK TO TOP =================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--orange-light);
  transform: translateY(-4px);
}

/* =================== RESPONSIVE =================== */
@media (max-width: 1024px) {
  .service-featured {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }

  .contact-info-title {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .section {
    padding: 72px 0;
  }

  /* Mobile Nav */
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 80vw);
    height: 100vh;
    background: var(--blue-dark);
    padding: calc(var(--nav-height) + 24px) 32px 40px;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    box-shadow: -8px 0 40px rgba(0,0,0,0.3);
  }

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

  .nav-links {
    flex-direction: column;
    gap: 4px;
  }

  .nav-link {
    font-size: 1rem;
    padding: 14px 16px;
    border-radius: var(--radius-md);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(255,255,255,0.08);
    color: var(--orange);
  }

  /* Hero */
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .service-featured {
    padding: 24px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Cards */
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    width: 60px;
    height: 1px;
  }

  /* Contact */
  .contact-info {
    display: flex;
    flex-direction: column;
  }

  .contact-form {
    padding: 32px 24px;
  }

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

  /* Footer */
  .footer-nav {
    gap: 16px;
  }

  /* Back to top */
  .back-to-top {
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 1.6rem;
  }

  .hero-pre-title {
    font-size: 0.88rem;
  }

  .contact-form {
    padding: 24px 16px;
  }
}