/* ============================================
   MODERN FUT TRACKER - CLEAN DESIGN
   ============================================ */

:root {
  --primary-blue: #2563eb;
  --primary-purple: #9333ea;
  --accent-yellow: #ffe066;
  --bg-dark: #0a0e1a;
  --bg-card: rgba(30, 41, 59, 0.6);
  --text-primary: #ffffff;
  --text-secondary: #e0e7ff;
  --text-muted: #a5b4fc;
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(37, 99, 235, 0.15);
  --shadow-xl: 0 16px 48px rgba(37, 99, 235, 0.2);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-image: url('../backgroundtest.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   MODERN NAVBAR
   ============================================ */

.modern-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: rgba(10, 14, 26, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.tracker-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link:active {
  transform: scale(0.98);
}

/* ============================================
   HAMBURGER MENU
   ============================================ */

.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  transition: all 0.3s ease;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger-menu:hover .hamburger-line {
  background: var(--accent-yellow);
}

.hamburger-menu.active .hamburger-line:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.hamburger-menu.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.hamburger-menu.active .hamburger-line:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  padding: 1rem 0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: translateY(-20px);
  transition: all 0.3s ease;
  pointer-events: none;
}

.mobile-nav.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 1rem 2rem;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link:active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--primary-blue);
  padding-left: 2.25rem;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero-section {
  position: relative;
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate(-50%, -50%);
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(10, 14, 26, 0.4) 0%, rgba(10, 14, 26, 0.7) 100%);
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 2rem;
  text-align: center;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.6;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
  color: var(--text-primary);
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.1rem;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-blue) 100%);
}

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

.btn-primary svg {
  transition: transform 0.3s ease;
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.1rem;
  text-decoration: none;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ============================================
   MODERN SECTIONS
   ============================================ */

.section-modern {
  position: relative;
  width: 100vw;
  min-height: 80vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 6rem 1rem;
  opacity: 0;
  transition: opacity 0.8s ease, transform 0.8s ease;
  transform: translateY(30px);
  pointer-events: none;
  scroll-margin-top: 100px;
}

.section-modern.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.section-modern.inactive {
  opacity: 0;
  pointer-events: none;
}

.section-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  font-weight: 400;
}

/* ============================================
   FEATURE CARDS
   ============================================ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.features-grid-two {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.feature-card,
.feature-card-large {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.feature-card:hover,
.feature-card-large:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(37, 99, 235, 0.3);
}

.feature-icon,
.feature-icon-large {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.feature-icon-large {
  font-size: 4rem;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.feature-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 400;
}

/* ============================================
   HOW IT WORKS
   ============================================ */

.how-steps-modern {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.how-step-modern {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.how-step-modern:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.3);
}

.step-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-blue);
  min-width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.2) 0%, rgba(147, 51, 234, 0.2) 100%);
  border-radius: 12px;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.step-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */

.modern-footer {
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  padding: 2rem 1rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-content p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */

#scrollTopBtn {
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  z-index: 999;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
  color: var(--text-primary);
  border: none;
  border-radius: 12px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
}

#scrollTopBtn.show {
  opacity: 1;
  pointer-events: auto;
}

#scrollTopBtn:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

#scrollTopBtn:active {
  transform: translateY(-2px);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  .modern-navbar {
    padding: 0.75rem 0;
  }

  .nav-container {
    padding: 0 1rem;
  }

  .nav-links {
    display: none;
  }

  .hamburger-menu {
    display: flex;
  }

  .logo {
    width: 2rem;
    height: 2rem;
  }

  .tracker-title {
    font-size: 1.25rem;
  }

  .hero-content {
    padding: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .section-modern {
    padding: 4rem 1rem;
    min-height: auto;
  }

  .section-header {
    margin-bottom: 2.5rem;
  }

  .features-grid,
  .features-grid-two {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .feature-card,
  .feature-card-large {
    padding: 2rem;
  }

  .how-steps-modern {
    gap: 1rem;
  }

  .how-step-modern {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }

  .step-number {
    width: 50px;
    height: 50px;
    font-size: 2rem;
  }

  #scrollTopBtn {
    right: 1rem;
    bottom: 1rem;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .nav-links {
    display: none;
  }

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

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .feature-card,
  .feature-card-large {
    padding: 1.5rem;
  }

  .feature-icon {
    font-size: 3rem;
  }

  .feature-icon-large {
    font-size: 3.5rem;
  }
}

/* ============================================
   LEGACY SUPPORT (for existing JS)
   ============================================ */

.navbar {
  display: none;
}

.content-section {
  display: none;
}

.how-steps {
  display: none;
}

.how-step {
  display: none;
}

.how-icon {
  display: none;
}

/* Ensure sections work with existing scroll logic */
section {
  scroll-margin-top: 100px;
}