/* ============================================
   ROBECOPLUS Marketing Website - Main Stylesheet
   Theme Color: #02A2BA
   ============================================ */

:root {
  --primary-color: #02A2BA;
  --primary-dark: #01899A;
  --primary-light: #E6F7FA;
  --text-dark: #1F2937;
  --text-gray: #6B7280;
  --bg-white: #FFFFFF;
  --bg-light: #F9FAFB;
  --border-color: #E5E7EB;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* ============================================
   Header & Navigation
   ============================================ */

header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-dark);
}

.logo-container img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.cta-button {
  background: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-light) 0%, white 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(2, 162, 186, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.hero-text .subtitle {
  font-size: 1.25rem;
  color: var(--text-gray);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-text .description {
  font-size: 1.1rem;
  color: var(--text-gray);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
}

/* ============================================
   Sections
   ============================================ */

section {
  padding: 5rem 2rem;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 1.2rem;
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 4rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-gray);
  line-height: 1.8;
}

/* How It Works */
.how-it-works {
  background: var(--bg-light);
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.step-card {
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.step-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.step-card p {
  color: var(--text-gray);
}

/* Use Cases */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.use-case-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 16px;
  border-left: 4px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.use-case-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(5px);
}

.use-case-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.use-case-card p {
  color: var(--text-gray);
}

/* Testimonials */
.testimonials {
  background: var(--bg-light);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  font-size: 4rem;
  color: var(--primary-light);
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-family: Georgia, serif;
}

.testimonial-text {
  font-style: italic;
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  padding-top: 1rem;
}

.testimonial-author {
  font-weight: 600;
  color: var(--text-dark);
}

/* Download Section */
.download-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  text-align: center;
}

.download-section .section-title,
.download-section .section-subtitle {
  color: white;
}

.download-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 3rem 0;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: white;
  color: var(--primary-color);
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.download-qr {
  margin: 2rem 0;
}

.download-qr img {
  width: 200px;
  height: 200px;
  background: white;
  padding: 1rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

/* ============================================
   Footer
   ============================================ */

footer {
  background: var(--text-dark);
  color: white;
  padding: 3rem 2rem 1.5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   Forms
   ============================================ */

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-white);
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 0.25rem;
}

.checkbox-group label {
  font-size: 0.9rem;
  color: var(--text-gray);
}

/* ============================================
   Content Pages
   ============================================ */

.content-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.content-page h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.content-page h2 {
  font-size: 2rem;
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.content-page h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.content-page p {
  margin-bottom: 1.5rem;
  color: var(--text-gray);
  line-height: 1.8;
}

.content-page ul,
.content-page ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
  color: var(--text-gray);
}

.content-page li {
  margin-bottom: 0.5rem;
  line-height: 1.8;
}

.content-page a {
  color: var(--primary-color);
  text-decoration: none;
}

.content-page a:hover {
  text-decoration: underline;
}

.highlight-box {
  background: var(--primary-light);
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
  margin: 2rem 0;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.contact-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.contact-card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.contact-card a {
  color: var(--primary-color);
  text-decoration: none;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid,
  .steps-container,
  .use-cases-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .hero-buttons,
  .download-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-button,
  .download-btn {
    width: 100%;
    text-align: center;
  }
}

/* ============================================
   Animations
   ============================================ */

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Image Styles */
.content-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.image-with-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin: 3rem 0;
}

.image-with-text img {
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

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