/* Contemporary Engineering Design for TST SRL */
:root {
  --primary-color: #0f3558;
  --secondary-color: #1a4d7a;
  --accent-color: #2563eb;
  --accent-light: #60a5fa;
  --success: #10b981;
  --light-bg: #f8fafc;
  --text-dark: #0f172a;
  --text-light: #475569;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #d1d5db;
  --white: #ffffff;
  --border-color: #cbd5e1;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
  font-size: 16px;
  margin: 0;
  padding: 0;
}

/* Header */
.header {
  background: var(--white);
  color: var(--text-dark);
  padding: 1rem 0;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: var(--shadow);
  border-bottom: 1px solid var(--gray-200);
  height: auto;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--primary-color);
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: 2rem;
  flex-wrap: nowrap;
  justify-content: center;
}

.nav a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}

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

.nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--accent-color);
  transition: var(--transition);
}

.nav a:hover::after {
  width: 100%;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  background: transparent;
  border: 1.5px solid var(--gray-300);
  color: var(--text-dark);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}

.lang-btn:hover,
.lang-btn.active {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: var(--white);
}

/* Main Content */
.main {
  margin-top: 80px;
  min-height: calc(100vh - 160px);
  transition: margin-top 0.1s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #0f3558 0%, #1a4d7a 50%, #2563eb 100%);
  background-size: 400% 400%;
  color: var(--white);
  padding: 6rem 0 5rem;
  text-align: center;
  animation: gradient 15s ease infinite;
}

@keyframes gradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.1;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.35rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  font-weight: 300;
  letter-spacing: 0.3px;
}

.cta-btn {
  background: var(--white);
  color: var(--accent-color);
  padding: 1rem 2.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  display: inline-block;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
  border: none;
  cursor: pointer;
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  background: var(--gray-100);
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section h2 {
  font-size: 2.75rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 3.5rem;
  color: var(--primary-color);
  letter-spacing: -0.8px;
}

.section p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-light);
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
  grid-auto-rows: auto;
  max-width: 100%;
}

.service-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-color);
}

.service-card h3 {
  font-size: 1.45rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-weight: 700;
}

.service-card p {
  color: var(--text-light);
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 1rem;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.project-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
  border: 1px solid var(--gray-200);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-color);
}

/* Renewable Energy Project Cards */
.project-card.energy-project {
  border: 2px solid #10b981;
  position: relative;
}

.project-card.energy-project::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #10b981 0%, #059669 100%);
  z-index: 10;
}

.project-card.energy-project:hover {
  border-color: #059669;
  box-shadow: 0 12px 28px rgba(16, 185, 129, 0.25);
}

.project-image {
  height: 220px;
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-color) 100%);
  overflow: hidden;
  display: block;
  position: relative;
}

.project-image picture {
  display: block;
  width: 100%;
  height: 100%;
}

.project-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform var(--transition);
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-content {
  padding: 2rem;
}

.project-content h3 {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.project-content p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
}

/* Project Detail Page */
.project-hero {
  background: linear-gradient(135deg, #0f3558 0%, #1a4d7a 50%, #2563eb 100%);
  background-size: 400% 400%;
  color: var(--white);
  padding: 4rem 0;
  animation: gradient 15s ease infinite;
}

.project-hero h1 {
  font-size: 2.75rem;
  margin-bottom: 1rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.project-hero .location {
  font-size: 1.15rem;
  opacity: 0.95;
  margin-bottom: 2rem;
  font-weight: 300;
}

.project-details {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.project-description {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.project-description h2 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-weight: 700;
  font-size: 2rem;
}

.project-description h3 {
  color: var(--primary-color);
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-weight: 700;
  font-size: 1.2rem;
}

.project-info {
  background: var(--light-bg);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  height: fit-content;
}

.project-info h3 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-weight: 700;
  font-size: 1.25rem;
}

/* Project Gallery */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.gallery-item {
  overflow: hidden;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  background: #f0f0f0;
  aspect-ratio: 4/3;
}

.gallery-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.gallery-item picture {
  display: block;
  width: 100%;
  height: 100%;
}

.gallery-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

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

.mb-3 {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.mb-3:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.specs-list {
  list-style: none;
  padding: 0;
}

.specs-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--gray-200);
  font-weight: 500;
  color: var(--text-dark);
}

.specs-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.services-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.service-tag {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow);
}

/* Footer */
.footer {
  background: linear-gradient(135deg, #0f3558 0%, #1a4d7a 100%);
  color: var(--white);
  padding: 4rem 2rem 1.5rem;
  margin-top: 5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  font-weight: 300;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 400;
}

.footer-links a:hover {
  color: var(--accent-light);
}

/* Contact links in footer should not be blue */
.footer-section a {
  color: rgba(255, 255, 255, 0.85) !important;
  text-decoration: none;
}

.footer-section a:hover {
  color: var(--accent-light);
  text-decoration: underline;
}

.footer-bottom {
  max-width: 1200px;
  margin: 3rem auto 0;
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  font-weight: 300;
}

.footer-disclaimer {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
  margin-top: 1.5rem;
}

.footer-privacy-link {
  margin-top: 1rem;
}

.footer-privacy-link a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-privacy-link a:hover {
  color: var(--white);
}

/* Renewable Energy Section */
.renewable-section {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.renewable-highlight {
  padding: 2rem 0;
}

.renewable-highlight h2 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 2.5rem;
}

.renewable-highlight .section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  font-weight: 400;
}

.renewable-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding: 2rem;
  background: var(--white);
  border: 2px solid #10b981;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.1);
}

.renewable-info h3 {
  font-size: 1.75rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.renewable-info p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.renewable-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0 2rem;
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
  background: #f0fdf4;
  border-left: 4px solid #10b981;
  border-radius: 6px;
}

.highlight-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: #10b981;
}

.highlight-text {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

.renewable-projects-mini {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.renewable-project-mini {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-decoration: none;
  transition: var(--transition);
  border-radius: 8px;
  overflow: hidden;
}

.renewable-project-mini:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(16, 185, 129, 0.15);
}

.project-image-mini {
  width: 100%;
  height: 160px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--gray-200);
}

.project-image-mini img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.renewable-project-mini:hover .project-image-mini img {
  transform: scale(1.05);
}

.project-label {
  color: var(--text-dark);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
}

.project-label strong {
  color: #10b981;
  display: block;
  margin-bottom: 0.25rem;
}

/* Energy Page Styling */
.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 4rem 2rem;
  text-align: center;
  border-bottom: 4px solid #10b981;
}

.energy-header h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.energy-header .subtitle {
  font-size: 1.3rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.95);
}

.energy-intro {
  padding: 3rem 2rem;
  background: var(--white);
}

.intro-content h2 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-size: 2rem;
  text-align: center;
}

.intro-content p {
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

.energy-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-card {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  padding: 1.5rem;
  border-radius: 10px;
  border-left: 5px solid #10b981;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(16, 185, 129, 0.2);
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 700;
  color: #10b981;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 500;
  line-height: 1.4;
}

.energy-services {
  background: var(--light-bg);
  padding: 3rem 2rem;
}

.energy-services h2 {
  color: var(--primary-color);
  margin-bottom: 2rem;
  text-align: center;
  font-size: 2rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.15);
}

.service-card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

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

.energy-areas {
  padding: 3rem 2rem;
  background: var(--white);
}

.energy-areas h2 {
  color: var(--primary-color);
  margin-bottom: 2rem;
  text-align: center;
  font-size: 2rem;
}

.areas-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.area-column {
  background: linear-gradient(135deg, #f0fdf4 0%, #f1f5f9 100%);
  padding: 2rem;
  border-radius: 8px;
  border-left: 4px solid #10b981;
}

.area-column h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.area-column p {
  color: var(--text-light);
  line-height: 1.8;
}

.featured-renewable-projects {
  padding: 3rem 2rem;
  background: var(--light-bg);
}

.featured-renewable-projects h2 {
  color: var(--primary-color);
  margin-bottom: 2rem;
  text-align: center;
  font-size: 2rem;
}

.projects-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.project-card-preview {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.project-card-preview:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(16, 185, 129, 0.15);
}

.project-card-preview .project-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
}

.project-card-preview .project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.project-card-preview:hover .project-image img {
  transform: scale(1.08);
}

.project-card-preview .project-info {
  padding: 1.5rem;
}

.project-card-preview h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.project-card-preview .project-meta {
  font-size: 0.9rem;
  color: #10b981;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.project-card-preview p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
  .renewable-featured {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .renewable-projects-mini {
    grid-template-columns: 1fr;
  }

  .renewable-highlights {
    grid-template-columns: 1fr;
  }

  .page-header {
    padding: 2rem 1rem;
  }

  .energy-header h1 {
    font-size: 2rem;
  }

  .energy-header .subtitle {
    font-size: 1rem;
  }

  .energy-stats {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .projects-preview {
    grid-template-columns: 1fr;
  }
}

/* Tablet: 2 columns for services */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

/* Mobile: 1 column for services and nav */
@media (max-width: 768px) {
  .header {
    padding: 0.5rem 0;
  }

  .header-content {
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    padding: 0.5rem 1rem;
  }

  .nav {
    flex-wrap: wrap;
    gap: 0.5rem;
    width: 100%;
    justify-content: center;
  }

  .logo {
    font-size: 1.2rem;
    white-space: nowrap;
  }

  .nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    order: 2;
  }

  .nav a {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    white-space: nowrap;
    display: inline-block;
  }

  .lang-switcher {
    gap: 0.25rem;
    order: 3;
  }

  .lang-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
  }

  .hero h1 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
  }

  .hero p {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .section h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .service-card {
    padding: 1.5rem;
  }

  .service-card h3 {
    font-size: 1.2rem;
  }

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

  .project-details {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 1rem;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .header {
    padding: 0.5rem 0;
  }

  .header-content {
    padding: 0.5rem 0.75rem;
  }

  .logo {
    font-size: 1rem;
  }

  .nav {
    gap: 0.375rem;
  }

  .nav a {
    font-size: 0.65rem;
    padding: 0.2rem 0.4rem;
  }

  .lang-btn {
    padding: 0.3rem 0.6rem;
    font-size: 0.7rem;
  }

  .hero {
    padding: 1.5rem 0;
  }

  .hero h1 {
    font-size: 1.35rem;
  }

  .hero p {
    font-size: 0.8rem;
  }

  .section {
    padding: 1.5rem 0;
  }

  .section h2 {
    font-size: 1.35rem;
  }

  .services-grid {
    gap: 1rem;
  }

  .service-card {
    padding: 1rem;
  }

  .service-card h3 {
    font-size: 1rem;
  }

  .container {
    padding: 0 0.75rem;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
}

.btn-primary {
  background: #1e40af;
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: #1e3a8a;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: #94a3b8;
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: #64748b;
  transform: translateY(-2px);
}
  transform: translateY(-1px);
}