/* -------------------------------------------------------------
   HACKATOKEN.COM - DESIGN SYSTEM & STYLES (VANILLA CSS)
   ------------------------------------------------------------- */

/* 1. DESIGN TOKENS & VARIABLES */
:root {
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Colors */
  --bg-primary: #080809;
  --bg-secondary: #0f0f12;
  --bg-card: rgba(18, 18, 22, 0.6);
  --bg-card-hover: rgba(26, 26, 32, 0.8);
  
  --accent-orange: #ff5e00;
  --accent-orange-rgb: 255, 94, 0;
  --accent-green: #00e676;
  --accent-green-rgb: 0, 230, 118;
  
  --text-primary: #f3f4f6;
  --text-secondary: #e5e7eb;
  --text-muted: #9ca3af;
  --text-dark: #1f2937;
  
  --border-color: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 94, 0, 0.3);
  --border-active: rgba(255, 94, 0, 0.6);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.7);
  --shadow-glow-orange: 0 0 30px rgba(255, 94, 0, 0.2);
  --shadow-glow-green: 0 0 30px rgba(0, 230, 118, 0.2);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. GLOBAL RESET & BASE STYLES */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
}

body {
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  
  /* Cyberpunk Grid Background */
  background-color: var(--bg-primary);
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
}

/* Modern Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #222;
  border: 2px solid var(--bg-primary);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-orange);
}

/* Typography Selection */
::selection {
  background: var(--accent-orange);
  color: var(--bg-primary);
}

/* 3. LAYOUT UTILITIES */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 8rem 0;
  position: relative;
}

.glow-bg {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(var(--accent-orange-rgb), 0.08) 0%, transparent 70%);
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
}

.glow-bg-green {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(var(--accent-green-rgb), 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* 4. TYPOGRAPHY & HEADINGS */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

p {
  color: var(--text-secondary);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-orange);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
  display: block;
}

.mono {
  font-family: var(--font-mono);
}

/* 5. INTERACTIVE BUTTONS & CTA */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 1rem 2rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background-color: var(--accent-orange);
  color: var(--bg-primary);
  border: 1px solid var(--accent-orange);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent-orange);
  box-shadow: var(--shadow-glow-orange);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
  transform: translateY(-2px);
}

.btn-green {
  background-color: var(--accent-green);
  color: var(--bg-primary);
  border: 1px solid var(--accent-green);
  box-shadow: var(--shadow-sm);
}

.btn-green:hover {
  background-color: transparent;
  color: var(--accent-green);
  box-shadow: var(--shadow-glow-green);
  transform: translateY(-2px);
}

/* 6. HEADER / NAVIGATION */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(8, 8, 9, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

header.scrolled {
  padding: 0.5rem 0;
  background: rgba(8, 8, 9, 0.95);
  box-shadow: var(--shadow-sm);
}

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--accent-orange);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-orange);
}

/* Hamburger Menu (Responsive) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: all var(--transition-fast);
}

/* 7. HERO SECTION & SLOT MACHINE */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  z-index: 1;
  position: relative;
}

/* Slot machine slide indicator bar styling */
.slot-indicator-bar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  position: relative;
  z-index: 10;
}

.indicator-btn {
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.indicator-btn:hover {
  color: var(--text-primary);
}

.indicator-rect {
  display: inline-block;
  width: 24px;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.25);
  border-radius: 3px;
  transition: all var(--transition-normal);
}

.indicator-btn.active .indicator-rect {
  background-color: var(--accent-orange);
  width: 40px;
  box-shadow: 0 0 12px rgba(255, 94, 0, 0.8);
}

.badge-wrapper {
  margin-bottom: 2rem;
  display: inline-block;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 94, 0, 0.08);
  border: 1px solid rgba(255, 94, 0, 0.2);
  color: var(--accent-orange);
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-orange);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-orange);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: clamp(1.6rem, 5.2vw, 4.5rem);
  margin-bottom: 2rem;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.1em 0.25em;
  line-height: 1.2;
  width: 100%;
}

/* Slot Machine Engine Styles */
.slot-machine-verb,
.slot-machine-noun {
  display: inline-block;
  height: 1.15em;
  overflow: hidden;
  vertical-align: bottom;
  position: relative;
  color: var(--accent-orange);
  text-shadow: 0 0 20px rgba(255, 94, 0, 0.3);
  transition: width var(--transition-slow);
  clip-path: inset(0px 0px);
}

.slot-reel {
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-slow);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.slot-word {
  height: 1.15em;
  line-height: 1.15em;
  white-space: nowrap;
}

.static-mega {
  color: var(--text-primary);
  text-shadow: none;
  font-weight: 900;
  display: inline-block;
}

.hero-desc-container {
  height: 80px; /* Fixed height to prevent layout shifts */
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-desc {
  max-width: 600px;
  font-size: 1.15rem;
  color: var(--text-muted);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.hero-desc.fade-out {
  opacity: 0;
  transform: translateY(10px);
}

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

.hero-actions {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  align-items: center;
}

.hero-actions .btn {
  min-width: 220px;
  transition: all var(--transition-normal);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.6;
}

.scroll-indicator .mouse {
  width: 20px;
  height: 32px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .wheel {
  width: 4px;
  height: 8px;
  background-color: var(--text-muted);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollDown 1.5s infinite;
}

/* 8. ABOUT SECTION (EFEKTIVITA) */
.about {
  background-color: rgba(10, 10, 12, 0.4);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h3 {
  font-size: 1.8rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.about-text h3 span {
  color: var(--accent-orange);
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.highlight-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 6px;
  transition: all var(--transition-normal);
}

.highlight-box:hover {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.highlight-box h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

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

.highlight-box .icon {
  font-size: 1.75rem;
  color: var(--accent-orange);
  margin-bottom: 1rem;
  display: block;
}

/* 9. ROLES SECTION */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.role-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem 2rem;
  border-radius: 6px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.role-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--accent-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.role-card:hover {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow-orange);
  transform: translateY(-8px);
}

.role-card:hover::after {
  transform: scaleX(1);
}

.role-card.active-card {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow-orange);
}

.role-card.active-card::after {
  transform: scaleX(1);
}

.role-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 1.5rem;
}

.role-icon {
  font-size: 2rem;
  color: var(--accent-orange);
  margin-bottom: 1.5rem;
}

.role-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.role-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.role-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-orange);
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  transition: gap var(--transition-fast);
}

.role-card:hover .role-link {
  gap: 0.85rem;
}

/* 10. USE CASES SECTION */
.challenges {
  background-color: rgba(10, 10, 12, 0.4);
}

.challenges-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 4rem;
}

.challenges-header p {
  max-width: 500px;
}

.challenges-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.challenge-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 3rem;
  border-radius: 8px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.challenge-card:hover {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.challenge-top {
  margin-bottom: 2rem;
}

.challenge-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 1.5rem;
}

.challenge-card h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.challenge-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.challenge-difficulty {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.challenge-difficulty .dots {
  display: flex;
  gap: 4px;
}

.challenge-difficulty .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #333;
}

.challenge-difficulty .dot.active {
  background: var(--accent-orange);
  box-shadow: 0 0 6px var(--accent-orange);
}

.challenge-tech {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.challenge-tech span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-orange);
  background-color: rgba(255, 94, 0, 0.05);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

/* 11. TRANSPARENT FUNDING SECTION & QR WIDGET */
.funding-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.funding-widget-box {
  background: var(--bg-card);
  border: 1px solid rgba(0, 230, 118, 0.2);
  padding: 3rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.funding-widget-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--accent-green);
}

.funding-account-info {
  margin-bottom: 2rem;
}

.account-num-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
  border-radius: 6px;
  margin-top: 0.75rem;
}

.account-number {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent-green);
}

.btn-copy {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
  position: relative;
}

.btn-copy:hover {
  color: var(--accent-green);
}

/* Copy Tooltip */
.tooltip {
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  background: var(--accent-green);
  color: var(--bg-primary);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--accent-green) transparent transparent transparent;
}

.btn-copy.show-tooltip .tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* QR Code Section */
.qr-selection-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.qr-amounts {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.amount-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1.25rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
}

.amount-btn:hover {
  border-color: var(--accent-green);
  background: rgba(0, 230, 118, 0.03);
}

.amount-btn.active {
  border-color: var(--accent-green);
  background: rgba(0, 230, 118, 0.1);
  color: var(--accent-green);
}

.amount-btn span {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.amount-btn.active span {
  color: var(--accent-green);
}

.qr-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  padding: 1rem;
  border-radius: 8px;
  width: 170px;
  height: 170px;
  margin: 0 auto;
  border: 1px solid rgba(0, 230, 118, 0.2);
}

.qr-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity var(--transition-fast);
}

/* Progress Bar area */
.funding-progress-area {
  margin-top: 2.5rem;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.progress-header span:first-child {
  color: var(--accent-green);
  font-weight: 700;
}

.progress-bar-container {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  width: 18.5%; /* Placeholder initial value, e.g., 185 000 CZK raised */
  background: linear-gradient(90deg, var(--accent-green), #00b0ff);
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 230, 118, 0.5);
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 12. TEAM SECTION */
.team {
  background-color: rgba(10, 10, 12, 0.4);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.team-card:hover {
  border-color: var(--accent-orange);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
}

.team-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: #222;
  margin: 0 auto 1.5rem auto;
  border: 2px solid var(--border-color);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--text-muted);
}

.team-card:hover .team-avatar {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
  box-shadow: var(--shadow-glow-orange);
}

.team-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.team-role {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-orange);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.team-bio {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.team-socials {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.team-socials a {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: color var(--transition-fast);
}

.team-socials a:hover {
  color: var(--accent-orange);
}

/* 13. SIGNUP MODAL / POPUP */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 8, 9, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: #0f0f12;
  border: 1px solid var(--border-color);
  width: 90%;
  max-width: 500px;
  padding: 3rem;
  border-radius: 8px;
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.modal-overlay.open .modal-box {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--accent-orange);
}

.modal-box h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.modal-box p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

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

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-orange);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.modal-box .btn {
  width: 100%;
  margin-top: 1rem;
}

/* 14. FOOTER */
footer {
  background-color: #050506;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-socials {
  display: flex;
  gap: 1.5rem;
}

.footer-socials a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  text-decoration: none;
}

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

/* 15. KEYFRAME ANIMATIONS */
@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 94, 0, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 10px rgba(255, 94, 0, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 94, 0, 0);
  }
}

@keyframes scrollDown {
  0% {
    opacity: 0;
    top: 6px;
  }
  30% {
    opacity: 1;
  }
  60% {
    opacity: 1;
    top: 18px;
  }
  100% {
    opacity: 0;
    top: 18px;
  }
}

/* 16. RESPONSIVE DESIGN (MEDIA QUERIES) */
@media (max-width: 1024px) {
  .about-grid,
  .challenges-grid,
  .funding-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .challenges-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  header nav {
    height: 70px;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background: #080809;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
  }
  
  .nav-links.open {
    transform: translateX(0);
  }
  
  .nav-toggle {
    display: block;
  }
  
  /* Hamburger animation */
  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  section {
    padding: 5rem 0;
  }
  
  .hero {
    padding-bottom: 4rem;
    min-height: auto;
  }

  .scroll-indicator {
    display: none;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .qr-selection-area {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .qr-display {
    order: -1;
  }
}