* {
  box-sizing: border-box;
}

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

:root {
  /* ========== COLOR SYSTEM ========== */
  /* Dark Mode (Default) */
  --color-bg-base: #050505;
  --color-bg-surface-1: rgba(8, 8, 8, 0.95);
  --color-bg-surface-2: rgba(12, 12, 12, 0.9);
  --color-bg-surface-3: rgba(18, 18, 18, 0.85);
  --color-bg-glass: rgba(15, 15, 15, 0.35);
  --color-bg-glass-hover: rgba(20, 20, 20, 0.45);

  --color-primary: #0aff88;
  --color-primary-dark: #00cc6a;
  --color-primary-light: #5fffb5;
  --color-secondary: #00c76b;
  --color-accent: #00ff88;

  --color-text-primary: #e8e8e8;
  --color-text-secondary: #b4ffd0;
  --color-text-tertiary: #a8a8a8;
  --color-text-muted: #707070;

  --color-border: rgba(10, 255, 136, 0.15);
  --color-border-hover: rgba(10, 255, 136, 0.25);
  --color-divider: rgba(100, 100, 100, 0.1);

  /* Shadows & Depth */
  --shadow-xs: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 48px rgba(0, 255, 136, 0.1);
  --shadow-xl: 0 24px 64px rgba(0, 255, 136, 0.12);
  --shadow-glow: 0 0 24px rgba(10, 255, 136, 0.25);

  /* Glassmorphism Effects */
  --glass-blur: blur(20px);
  --glass-blur-lg: blur(28px);
  --glass-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 100%);

  /* ========== TYPOGRAPHY ========== */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Roboto Mono', monospace;

  /* Fluid Typography Scales
     Mobile (320px): base sizes
     Desktop (1440px): max sizes
  */
  --text-xs: clamp(0.75rem, 0.72rem + 0.3vw, 0.95rem);
  --text-sm: clamp(0.85rem, 0.8rem + 0.4vw, 1rem);
  --text-base: clamp(0.95rem, 0.9rem + 0.5vw, 1.1rem);
  --text-lg: clamp(1.05rem, 0.95rem + 0.8vw, 1.35rem);
  --text-xl: clamp(1.2rem, 1rem + 1vw, 1.6rem);

  --heading-sm: clamp(1.3rem, 1.1rem + 1.2vw, 1.8rem);
  --heading-md: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem);
  --heading-lg: clamp(2rem, 1.3rem + 2.5vw, 3.2rem);
  --heading-xl: clamp(2.4rem, 1.5rem + 3.5vw, 4.2rem);

  /* ========== SPACING SCALE ========== */
  --space-2xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.4rem); /* 4-6px */
  --space-xs: clamp(0.5rem, 0.4rem + 0.4vw, 0.75rem); /* 8-12px */
  --space-sm: clamp(0.75rem, 0.6rem + 0.6vw, 1.1rem); /* 12-18px */
  --space-md: clamp(1rem, 0.8rem + 0.8vw, 1.5rem); /* 16-24px */
  --space-lg: clamp(1.5rem, 1.1rem + 1.2vw, 2.2rem); /* 24-35px */
  --space-xl: clamp(2rem, 1.4rem + 1.6vw, 3rem); /* 32-48px */
  --space-2xl: clamp(2.8rem, 1.8rem + 2.4vw, 4.4rem); /* 45-70px */
  --space-3xl: clamp(3.6rem, 2.2rem + 3.2vw, 5.6rem); /* 58-90px */

  /* ========== LAYOUT ========== */
  --page-padding: clamp(1rem, 2vw, 2.5rem);
  --page-gutter: var(--space-md);
  --max-width-content: 1200px;
  --max-width-narrow: 800px;
  --max-width-wide: 1400px;

  /* ========== RADIUS ========== */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* ========== TRANSITIONS ========== */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 350ms;
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Mode Overrides */
[data-theme="light"] {
  --color-bg-base: #f8f9f8;
  --color-bg-surface-1: rgba(248, 249, 248, 0.98);
  --color-bg-surface-2: rgba(240, 245, 240, 0.95);
  --color-bg-surface-3: rgba(230, 240, 235, 0.9);
  --color-bg-glass: rgba(255, 255, 255, 0.5);
  --color-bg-glass-hover: rgba(255, 255, 255, 0.65);

  --color-primary: #00a860;
  --color-primary-dark: #007a44;
  --color-primary-light: #40d68a;
  --color-secondary: #008248;
  --color-accent: #00b561;

  --color-text-primary: #0d1d12;
  --color-text-secondary: #0d4c2b;
  --color-text-tertiary: #4a4a4a;
  --color-text-muted: #909090;

  --color-border: rgba(0, 80, 40, 0.15);
  --color-border-hover: rgba(0, 80, 40, 0.25);
  --color-divider: rgba(0, 0, 0, 0.08);

  --shadow-xs: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 16px 48px rgba(0, 160, 96, 0.08);
  --shadow-xl: 0 24px 64px rgba(0, 160, 96, 0.1);
  --shadow-glow: 0 0 24px rgba(0, 160, 96, 0.15);
}

/* ============================================================================
   BASE ELEMENTS
   ============================================================================ */

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  background-color: var(--color-bg-base);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
}

/* Accessibility: Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--heading-xl);
  letter-spacing: -0.03em;
}

h2 {
  font-size: var(--heading-lg);
  letter-spacing: -0.025em;
}

h3 {
  font-size: var(--heading-md);
  letter-spacing: -0.015em;
}

h4 {
  font-size: var(--heading-sm);
}

h5 {
  font-size: var(--text-xl);
  font-weight: 600;
}

h6 {
  font-size: var(--text-lg);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
  line-height: 1.7;
}

small {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-smooth);
  position: relative;
}

a:hover {
  color: var(--color-primary-light);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: 4px;
}

/* ============================================================================
   COMMON ELEMENTS
   ============================================================================ */

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  font-size: inherit;
  line-height: 1.5;
}

input,
textarea,
select {
  font-family: var(--font-sans);
  font-size: inherit;
  line-height: 1.5;
}

/* ============================================================================
   LAYOUT CONTAINERS
   ============================================================================ */

.container {
  width: 100%;
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.container-narrow {
  width: 100%;
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.container-wide {
  width: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

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

section {
  width: 100%;
  padding: var(--space-3xl) var(--page-padding);
}

section:first-of-type {
  padding-top: var(--space-2xl);
}

@media (max-width: 768px) {
  section {
    padding: var(--space-2xl) var(--page-padding);
  }
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-2xl) var(--page-padding);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 10%, rgba(10, 255, 136, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 85% 90%, rgba(0, 200, 107, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: var(--max-width-narrow);
}

.hero h1 {
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s var(--ease-smooth) 0.2s both;
}

.hero p {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s var(--ease-smooth) 0.4s both;
}

.hero-actions {
  display: flex;
  flex-direction: row;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-smooth) 0.6s both;
}

@media (max-width: 640px) {
  .hero-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s var(--ease-bounce) infinite;
  z-index: 2;
}

.scroll-indicator svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  stroke-width: 2;
}

/* ============================================================================
   BUTTON STYLES
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 2px solid transparent;
  transition: all var(--duration-base) var(--ease-smooth);
  white-space: nowrap;
  min-height: 44px;
  gap: var(--space-xs);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--glass-gradient);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
  pointer-events: none;
}

.btn:hover::before {
  opacity: 0.1;
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-bg-base);
  box-shadow: 0 0 20px rgba(10, 255, 136, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 28px rgba(10, 255, 136, 0.4);
}

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

/* Secondary Button */
.btn-secondary {
  background: var(--color-bg-glass);
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-glass-hover);
  transform: translateY(-2px);
}

/* Tertiary Button */
.btn-tertiary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-tertiary:hover {
  background: rgba(10, 255, 136, 0.1);
}

/* Small Button */
.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-sm);
  min-height: 40px;
}

/* Large Button */
.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-lg);
  min-height: 48px;
}

/* ============================================================================
   GLASS SURFACE COMPONENTS
   ============================================================================ */

.glass-surface,
.card {
  background: var(--color-bg-glass);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration-base) var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.glass-surface::before,
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--glass-gradient);
  opacity: 0.3;
  pointer-events: none;
}

.glass-surface:hover,
.card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ============================================================================
   GRID SYSTEMS
   ============================================================================ */

.grid {
  display: grid;
  gap: var(--space-lg);
  width: 100%;
}

/* Mobile: 1 column, Tablet: 2 columns, Desktop: 3+ columns */
.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

.grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

input,
textarea,
select {
  background: var(--color-bg-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--ease-smooth);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(10, 255, 136, 0.2);
  background: var(--color-bg-surface-3);
}

textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font-mono);
}

/* ============================================================================
   ABOUT SECTION
   ============================================================================ */

.about-intro {
  text-align: center;
  max-width: var(--max-width-narrow);
  margin: 0 auto var(--space-2xl);
}

.about-intro h2 {
  margin-bottom: var(--space-md);
}

.about-cards {
  display: grid;
  gap: var(--space-lg);
}

.about-cards .card {
  text-align: left;
  padding: var(--space-lg);
}

@media (max-width: 640px) {
  .about-cards {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 641px) and (max-width: 1023px) {
  .about-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .about-cards {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg-base);
  font-size: 20px;
}

.card-title {
  font-size: var(--heading-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.card-text {
  font-size: var(--text-base);
  color: var(--color-text-tertiary);
  line-height: 1.6;
}

/* ============================================================================
   INSIGHTS SECTION
   ============================================================================ */

.insights-container {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

.stats-grid {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 641px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background: var(--color-bg-glass);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--duration-base) var(--ease-smooth);
}

.stat-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-value {
  font-size: clamp(1.8rem, 2vw, 3rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================================
   SOCIAL & FOOTER
   ============================================================================ */

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin: var(--space-2xl) 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  transition: all var(--duration-base) var(--ease-smooth);
  font-size: 20px;
}

.social-link:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(10, 255, 136, 0.3);
  transform: translateY(-4px) scale(1.1);
}

.footer {
  background: var(--color-bg-surface-1);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-xl) var(--page-padding);
  text-align: center;
}

.footer-content {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-8px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(10, 255, 136, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(10, 255, 136, 0.5);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-pulse {
  animation: pulse 2s var(--ease-smooth) infinite;
}

.animate-glow {
  animation: glow 3s var(--ease-smooth) infinite;
}

.animate-float {
  animation: float 4s var(--ease-smooth) infinite;
}

/* ============================================================================
   RESPONSIVE UTILITIES
   ============================================================================ */

@media (max-width: 640px) {
  /* Mobile: Adjust spacing and sizing */
  h1 {
    text-align: center;
  }

  section {
    padding: var(--space-xl) var(--page-padding);
  }

  .grid {
    gap: var(--space-md);
  }
}

@media (min-width: 641px) and (max-width: 1023px) {
  /* Tablet: Medium adjustments */
  section {
    padding: var(--space-2xl) var(--page-padding);
  }
}

@media (min-width: 1024px) {
  /* Desktop: Full layouts */
  section {
    padding: var(--space-3xl) var(--page-padding);
  }
}

/* ============================================================================
   HIGH DPI DISPLAYS
   ============================================================================ */

@media (min-width: 2560px) {
  :root {
    --space-pages-padding: 4rem;
  }
}

/* ============================================================================
   PERFORMANCE & ACCESSIBILITY
   ============================================================================ */

/* GPU Acceleration for Animations */
.btn,
.card,
.glass-surface,
.social-link {
  will-change: transform;
}

/* Smooth Scrolling */
@supports (scroll-snap-type: y mandatory) {
  html {
    scroll-snap-type: y proximity;
  }
}

/* Focus Visible for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Dark Mode Specific */
@media (prefers-color-scheme: dark) {
  /* Enhanced visibility for dark mode */
  input,
  textarea,
  select {
    background: var(--color-bg-surface-2);
  }
}

/* Light Mode Specific */
@media (prefers-color-scheme: light) {
  body {
    background: var(--color-bg-base);
  }
}

/* Print Styles */
@media print {
  .hero-canvas,
  .scroll-indicator,
  .btn {
    display: none;
  }

  body {
    background: white;
    color: black;
  }
}