/* Responsive Design - Mobile First Approach */

/* Extra Small Devices (phones, 320px and up) */
@media (max-width: 480px) {
  .header {
    width: calc(100% - 20px);
    top: 10px;
    border-radius: 18px;
    box-shadow: 
      0 1px 3px rgba(0, 0, 0, 0.06),
      0 2px 6px rgba(0, 0, 0, 0.08),
      0 4px 12px rgba(0, 0, 0, 0.12);
    /* Enhanced stability on mobile */
    position: fixed;
    transform: translateX(-50%);
    will-change: auto;
    contain: layout style paint;
  }
  
  .header.scrolled {
    box-shadow: 
      0 2px 8px rgba(0, 0, 0, 0.12), 
      0 4px 16px rgba(0, 0, 0, 0.08);
  }
  
  .header-container {
    padding: 0 16px;
    height: 60px; /* Slightly smaller header on mobile */
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .logo-text {
    font-size: 1.05rem;
    letter-spacing: -0.02em;
  }
  
  .logo-image {
    width: 36px;
    height: 36px;
  }
  
  .logo-container {
    gap: 8px;
  }
  
  /* Hide CTA button on mobile header */
  .cta-desktop {
    display: none;
  }
  
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.2;
  }
  
  .hero-subtitle {
    font-size: 1rem;
    line-height: 1.5;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767px) {
  .header {
    width: calc(100% - 24px);
    top: 12px;
    border-radius: 20px;
  }
  
  .header-container {
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: center;
    width: 100%;
  }
  
  .logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    margin-left: 18px;
    margin-top: 2px;
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex: 1;
    justify-content: flex-end;
  }
  
  .logo-text {
    font-size: 1.15rem;
  }
  
  .logo-image {
    width: 40px;
    height: 40px;
  }
  
  .logo-container {
    gap: 10px;
  }
  
  /* Hide CTA button on mobile header */
  .cta-desktop {
    display: none;
  }
  
  /* Show mobile navigation */
  .nav-desktop {
    display: none !important;
  }
  
  .mobile-menu-toggle {
    display: flex !important;
  }
  
  .mobile-overlay {
    display: block !important;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991px) {
  .header {
    width: calc(100% - 40px);
    top: 20px;
  }
  
  .header-container {
    padding: 0 24px;
  }
  
  .nav-desktop {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: flex !important;
  }
  
  .nav-mobile {
    display: block;
  }
}

/* Tablet and Mobile (768px and below) */
@media (max-width: 768px) {
  .nav-desktop {
    display: none !important;
  }
  
  .mobile-menu-toggle {
    display: flex !important;
  }
  
  .mobile-overlay {
    display: block !important;
  }
  
  /* Hide CTA button on mobile header */
  .cta-desktop {
    display: none;
  }
  
  /* Mobile Header - Perfect Vertical Centering */
  .header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: center;
    width: 100%;
    height: var(--header-height);
    padding: 0 20px;
  }
  
  .logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    margin-left: 20px;
    margin-top: 2px;
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex: 1;
    justify-content: flex-end;
  }
  
  .theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* Improve mobile header layout */
  .header-actions {
    gap: 16px;
  }
  
  .theme-toggle {
    padding: 12px;
    min-width: 44px;
    min-height: 44px;
  }
  
  .mobile-menu-toggle {
    padding: 12px;
    min-width: 44px;
    min-height: 44px;
  }
  
  /* Improve mobile navigation */
  .nav-mobile-content {
    height: calc(100vh - 84px);
    padding: 40px 24px;
  }
  
  .nav-mobile-list {
    padding: 0;
    gap: 12px;
  }
  
  .nav-mobile-link {
    padding: 20px 32px;
    font-size: 1.2rem;
    min-height: 60px;
  }
  
  .nav-mobile-cta-item {
    margin-top: 24px;
  }
  
  .nav-mobile-cta-link {
    margin: 0;
    padding: 18px 24px;
    font-size: 1.1rem;
    min-height: 56px;
  }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
  .nav-desktop {
    display: none !important;
  }
  
  .mobile-menu-toggle {
    display: flex !important;
  }
  
  .mobile-overlay {
    display: block !important;
  }
  
  /* Hide CTA button on mobile header */
  .cta-desktop {
    display: none;
  }
  
  /* Center all header elements on small mobile with slight adjustments */
  .header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: center;
    width: 100%;
  }
  
  .logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    margin-left: 15px;
    margin-top: 2px;
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex: 1;
    justify-content: flex-end;
  }
  
  /* Improve mobile header spacing */
  .header-actions {
    gap: 12px;
  }
  
  .theme-toggle {
    padding: 10px;
    min-width: 40px;
    min-height: 40px;
  }
  
  .mobile-menu-toggle {
    padding: 10px;
    min-width: 40px;
    min-height: 40px;
  }
  
  /* Improve mobile navigation layout */
  .nav-mobile-content {
    height: calc(100vh - 84px);
    padding: 32px 20px;
  }
  
  .nav-mobile-list {
    padding: 0;
    gap: 10px;
  }
  
  .nav-mobile-item {
    margin: 0;
  }
  
  .nav-mobile-link {
    padding: 18px 24px;
    font-size: 1.1rem;
    min-height: 56px;
  }
  
  .nav-mobile-cta-item {
    margin-top: 20px;
  }
  
  .nav-mobile-cta-link {
    margin: 0;
    padding: 16px 20px;
    font-size: 1rem;
    min-height: 52px;
  }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) {
  .header {
    width: calc(100% - 48px);
    top: 24px;
  }
  
  .header-container {
    padding: 0 32px;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .hero-content {
    max-width: 800px;
    margin: 0 auto;
  }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.3rem;
  }
}

/* Ultra Wide Screens (1400px and up) */
@media (min-width: 1400px) {
  .container {
    max-width: 1400px;
  }
  
  .hero-content {
    max-width: 1000px;
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .profile-img,
  .footer-profile-img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .btn,
  .cta-button {
    display: none;
  }
  
  .hero-section {
    page-break-inside: avoid;
  }
  
  .hero-title {
    color: #000 !important;
  }
  
  .hero-subtitle {
    color: #333 !important;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .header {
    border: 2px solid;
  }
  
  .btn {
    border: 2px solid;
  }
  
  .nav-link:hover {
    outline: 2px solid;
  }
}

/* ========================================
   HERO SECTION RESPONSIVE STYLES
   ======================================== */

/* Responsive Design for Hero Section */
@media (max-width: 992px) {
  .hero-centered-container {
    padding: 0 24px;
  }

  .hero-centered-heading {
    font-size: 4rem;
  }

  .hero-centered-subtext {
    font-size: 1.375rem;
  }

  .hero-centered-actions {
    gap: 24px;
  }

  .btn {
    padding: 18px 36px;
    font-size: 1.1rem;
    min-width: 180px;
  }

  .hero-centered::after {
    width: 150px;
    height: 150px;
  }
}

@media (max-width: 768px) {
  .hero-centered {
    padding: 80px 0 20px; /* even tighter space below hero on mobile */
    min-height: 90vh;
  }

  .hero-centered-container {
    padding: 0 16px;
  }

  .hero-centered-content {
    gap: 40px;
  }

  .hero-centered-text {
    gap: 24px;
  }

  .hero-centered-heading {
    font-size: 2.8rem;
    line-height: 1.1;
    letter-spacing: -0.03em;
  }

  .hero-centered-subtext {
    font-size: 1.1rem;
    line-height: 1.5;
    max-width: 100%;
  }

  .hero-centered-actions {
    gap: 16px;
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .btn {
    padding: 14px 28px;
    font-size: 0.95rem;
    min-width: 200px;
    width: 100%;
    max-width: 280px;
  }

  .hero-centered::after {
    width: 100px;
    height: 100px;
    top: 10%;
    right: 3%;
  }
}

@media (max-width: 480px) {
  .hero-centered {
    padding: 60px 0 14px; /* even tighter space below hero on small mobile */
    min-height: 85vh;
  }

  .hero-centered-container {
    padding: 0 12px;
  }

  .hero-centered-content {
    gap: 32px;
  }

  .hero-centered-text {
    gap: 20px;
  }

  .hero-centered-heading {
    font-size: 2.2rem;
    line-height: 1.15;
    letter-spacing: -0.02em;
  }

  .hero-centered-subtext {
    font-size: 1rem;
    line-height: 1.5;
    max-width: 100%;
  }

  .hero-centered-actions {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .btn {
    width: 100%;
    max-width: 260px;
    text-align: center;
    padding: 14px 24px;
    font-size: 0.9rem;
  }

  .hero-centered::after {
    display: none;
  }
}

@media (max-width: 360px) {
  .hero-centered {
    padding: 54px 0 10px; /* extra tight for very small screens */
    min-height: 80vh;
  }

  .hero-centered-container {
    padding: 0 8px;
  }

  .hero-centered-content {
    gap: 28px;
  }

  .hero-centered-text {
    gap: 16px;
  }

  .hero-centered-heading {
    font-size: 1.9rem;
    line-height: 1.2;
    letter-spacing: -0.01em;
  }

  .hero-centered-subtext {
    font-size: 0.95rem;
    line-height: 1.4;
  }

  .hero-centered-actions {
    gap: 10px;
  }

  .btn {
    max-width: 240px;
    padding: 12px 20px;
    font-size: 0.85rem;
  }
}

/* Dark Mode Media Query */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-color: #374151;
    --shadow-light: rgba(255, 255, 255, 0.1);
    --shadow-medium: rgba(255, 255, 255, 0.15);
  }
}