/**
 * Futuristic Minimalist Design System
 * Dark theme with glassmorphism, neon accents, and smooth animations
 */

/* CSS Custom Properties */
:root {
  /* Color Palette - Dark Theme */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-glass: rgba(26, 26, 26, 0.8);
  --bg-glass-light: rgba(255, 255, 255, 0.05);
  
  /* Accent Colors */
  --accent-primary: #00d4ff;
  --accent-secondary: #ff006e;
  --accent-tertiary: #8338ec;
  --accent-quaternary: #3a86ff;
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-tertiary: #666666;
  --text-muted: #404040;
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-quaternary));
  --gradient-secondary: linear-gradient(135deg, var(--accent-secondary), var(--accent-tertiary));
  --gradient-subtle: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(58, 134, 255, 0.1));
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
  --shadow-glow-intense: 0 0 40px rgba(0, 212, 255, 0.5);
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index Scale */
  --z-background: -1;
  --z-default: 1;
  --z-elevated: 10;
  --z-overlay: 100;
  --z-modal: 1000;
  --z-loading: 10000;
}

/* Light Theme Variables */
:root[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --bg-glass: rgba(248, 249, 250, 0.8);
  --bg-glass-light: rgba(0, 0, 0, 0.05);
  
  --text-primary: #000000;
  --text-secondary: #4a4a4a;
  --text-tertiary: #888888;
  --text-muted: #aaaaaa;
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Elements */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: var(--z-background);
  opacity: 0.3;
  animation: gridPulse 10s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.1; }
  50% { opacity: 0.3; }
}

.bg-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-background);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: var(--gradient-primary);
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 200px;
  height: 200px;
  background: var(--gradient-secondary);
  top: 60%;
  right: 20%;
  animation-delay: -7s;
}

.orb-3 {
  width: 150px;
  height: 150px;
  background: var(--accent-tertiary);
  bottom: 20%;
  left: 60%;
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(20px, -30px) scale(1.1); }
  50% { transform: translate(-20px, -20px) scale(0.9); }
  75% { transform: translate(30px, 10px) scale(1.05); }
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  transition: opacity var(--transition-normal);
}

.loading-content {
  text-align: center;
  margin-bottom: var(--space-8);
}

.loading-logo {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
}

.logo-circle {
  width: 80px;
  height: 80px;
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
  animation: logoSpin 2s linear infinite;
}

.logo-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--accent-primary);
}

@keyframes logoSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.loading-text h2 {
  font-size: var(--font-size-2xl);
  font-weight: 300;
  margin-bottom: var(--space-4);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.loading-dots {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: dotBounce 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0s; }

@keyframes dotBounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

.loading-progress {
  width: 300px;
  height: 2px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  animation: progressFill 3s ease-out forwards;
}

@keyframes progressFill {
  to { width: 100%; }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-elevated);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  max-width: 1400px;
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo .logo-circle {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: var(--space-8);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
}

.nav-link:hover {
  color: var(--accent-primary);
  background: rgba(0, 212, 255, 0.1);
}

.nav-icon {
  font-size: var(--font-size-lg);
}

.nav-actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.theme-toggle,
.menu-toggle {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--bg-glass-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.theme-toggle:hover,
.menu-toggle:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: var(--shadow-glow);
}

.menu-toggle {
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-20) var(--space-6) var(--space-16);
  max-width: 1400px;
  margin: 0 auto;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
  animation: badgeGlow 2s ease-in-out infinite alternate;
}

@keyframes badgeGlow {
  from { box-shadow: 0 0 5px rgba(0, 212, 255, 0.3); }
  to { box-shadow: 0 0 20px rgba(0, 212, 255, 0.5); }
}

.badge-text {
  font-size: var(--font-size-sm);
  color: var(--accent-primary);
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.title-line {
  display: block;
}

.title-accent {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleShimmer 3s ease-in-out infinite;
}

@keyframes titleShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.floating-cards {
  position: relative;
  width: 300px;
  height: 400px;
}

.card-3d {
  position: absolute;
  width: 240px;
  height: 150px;
  perspective: 1000px;
  animation: cardFloat 6s ease-in-out infinite;
}

.card-3d-1 {
  top: 0;
  left: 0;
  z-index: 3;
  animation-delay: 0s;
}

.card-3d-2 {
  top: 80px;
  right: 0;
  z-index: 2;
  animation-delay: -2s;
}

.card-3d-3 {
  bottom: 0;
  left: 30px;
  z-index: 1;
  animation-delay: -4s;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0) rotateY(0deg); }
  25% { transform: translateY(-10px) rotateY(5deg); }
  50% { transform: translateY(0) rotateY(0deg); }
  75% { transform: translateY(10px) rotateY(-5deg); }
}

.card-face {
  width: 100%;
  height: 100%;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-xl);
}

.card-chip {
  width: 24px;
  height: 18px;
  background: var(--gradient-primary);
  border-radius: 4px;
  align-self: flex-start;
}

.card-brand {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--accent-primary);
  align-self: flex-end;
}

.card-number {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: auto;
}

/* Calculator Container */
.calculator-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.calculator-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.title-icon {
  font-size: var(--font-size-3xl);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Amount Section */
.amount-section {
  margin-bottom: var(--space-12);
}

.amount-input-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.amount-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-lg);
  font-weight: 500;
}

.label-currency {
  padding: var(--space-1) var(--space-2);
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--accent-primary);
}

.amount-input-wrapper {
  position: relative;
  margin-bottom: var(--space-6);
}

.currency-symbol {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-size-2xl);
  color: var(--accent-primary);
  font-weight: 700;
  z-index: 2;
}

.amount-input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  text-align: center;
  transition: all var(--transition-normal);
}

.amount-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.amount-input::placeholder {
  color: var(--text-muted);
}

.input-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-normal);
}

.amount-input:focus + .input-glow {
  opacity: 0.1;
}

.amount-suggestions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.amount-btn {
  padding: var(--space-2) var(--space-4);
  background: var(--bg-glass-light);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.amount-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
}

/* Cards Section */
.cards-section {
  margin-bottom: var(--space-12);
}

.cards-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.cards-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

.cards-actions {
  display: flex;
  gap: var(--space-3);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-glass-light);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.action-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-icon {
  font-size: var(--font-size-base);
}

/* Filter Panel */
.filter-panel {
  display: none;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  gap: var(--space-6);
}

.filter-panel.active {
  display: flex;
  flex-wrap: wrap;
}

.filter-group {
  flex: 1;
  min-width: 200px;
}

.filter-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.filter-select {
  width: 100%;
  padding: var(--space-3);
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.filter-select:focus {
  outline: none;
  border-color: var(--accent-primary);
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.card-item {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.card-item:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.card-item.selected {
  border-color: var(--accent-primary);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: var(--shadow-glow);
}

.card-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card-item.selected::before {
  opacity: 1;
}

.card-checkbox {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 20px;
  height: 20px;
  appearance: none;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.card-checkbox:checked {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.card-checkbox:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--bg-primary);
  font-size: 12px;
  font-weight: bold;
}

.card-header {
  margin-bottom: var(--space-3);
}

.card-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.card-bank {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.card-details {
  margin-bottom: var(--space-4);
}

.card-rate {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.rate-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.rate-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.card-options {
  display: none;
}

.card-item.selected .card-options {
  display: block;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.option-btn {
  padding: var(--space-2);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.option-btn.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
  transform: scale(1.05);
}

.option-btn:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-1px);
}

/* About Page Styles */
.about-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.about-hero {
  text-align: center;
  margin: 4rem 0;
  padding: 2rem;
  background: var(--bg-glass);
  border-radius: 1rem;
  backdrop-filter: blur(10px);
}

.about-title {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 2rem;
}

.about-description {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 4rem 0;
}

.feature-card {
  background: var(--bg-glass);
  padding: 2rem;
  border-radius: 1rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.team-section {
  text-align: center;
  margin: 4rem 0;
  padding: 2rem;
  background: var(--bg-glass);
  border-radius: 1rem;
}

.team-intro {
  max-width: 600px;
  margin: 2rem auto;
  color: var(--text-secondary);
}

.team-members {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.team-member {
  text-align: center;
}

.member-photo {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.contact-section {
  text-align: center;
  margin: 4rem 0;
  padding: 2rem;
  background: var(--bg-glass);
  border-radius: 1rem;
}

.contact-section {
  position: relative;
  z-index: 1;
  text-align: center;
  margin: 4rem 0;
  padding: 2rem;
  background: var(--bg-glass);
  border-radius: 1rem;
}

.contact-button {
  margin: 3rem auto;
  text-align: center;
}

.contact-button .cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background: var(--gradient-primary);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.contact-button .cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.contact-button .button-icon {
  font-size: 1.2em;
}

.contact-button .form-note {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
  .about-title {
    font-size: 2rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    flex-direction: column;
  }
}

/* Active nav link style */
.nav-link.active {
  color: var(--accent-primary);
  background: var(--bg-glass);
}

/* Calculator Actions */
.calculator-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.primary-btn {
  background: var(--gradient-primary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-glow);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-intense);
}

.secondary-btn {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-glow {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.primary-btn:hover .btn-glow {
  left: 100%;
}

/* Messages */
.messages-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.message {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  backdrop-filter: blur(20px);
  border: 1px solid;
  animation: messageSlideIn var(--transition-normal) ease-out;
}

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

.message.success {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.3);
  color: #22c55e;
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.message.info {
  background: rgba(0, 212, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.3);
  color: var(--accent-primary);
}

/* Results Section */
.results-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.results-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.results-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.results-content {
  margin-bottom: var(--space-8);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.result-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

.result-card.best {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.result-card.best::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.result-rank {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--bg-primary);
}

.result-card-name {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.result-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.results-table-container {
  margin-top: var(--space-8);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  overflow-x: auto;
}

.results-table-container h3 {
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  font-size: var(--font-size-xl);
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.results-table th,
.results-table td {
  padding: var(--space-3);
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.results-table th {
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.results-table tr:hover {
  background: rgba(255, 255, 255, 0.05);
}

.results-table .best-card {
  background: rgba(0, 212, 255, 0.1);
  font-weight: 500;
}

.results-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-16) var(--space-6) var(--space-8);
  margin-top: var(--space-20);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-link {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-2);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-primary);
}

.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-glass-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-tertiary);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --space-6: 1rem;
    --space-8: 1.5rem;
    --space-12: 2rem;
    --space-16: 2.5rem;
    --space-20: 3rem;
  }

  .navbar {
    padding: var(--space-3) var(--space-4);
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-4);
    gap: var(--space-2);
  }

  .nav-links.mobile-open {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: var(--space-16) var(--space-4) var(--space-12);
  }

  .hero-content {
    margin-bottom: var(--space-8);
  }

  .hero-stats {
    justify-content: center;
  }

  .floating-cards {
    width: 250px;
    height: 300px;
  }

  .card-3d {
    width: 200px;
    height: 125px;
  }

  .calculator-container {
    padding: var(--space-12) var(--space-4);
  }

  .amount-input {
    font-size: var(--font-size-2xl);
  }

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

  .calculator-actions {
    flex-direction: column;
    align-items: center;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .filter-panel.active {
    flex-direction: column;
  }

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

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

@media (max-width: 480px) {
  .section-title {
    font-size: var(--font-size-3xl);
  }

  .amount-input {
    font-size: var(--font-size-xl);
    padding: var(--space-3) var(--space-3) var(--space-3) var(--space-10);
  }

  .currency-symbol {
    font-size: var(--font-size-xl);
    left: var(--space-3);
  }

  .amount-suggestions {
    gap: var(--space-2);
  }

  .amount-btn {
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
  }
}

/* Animations for better UX */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

.animate-scale-in {
  animation: scaleIn 0.4s ease-out forwards;
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.no-scroll {
  overflow: hidden;
}

/* Install Page Styles */
.install-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-20) var(--space-6) var(--space-16);
}

.install-hero {
  text-align: center;
  margin-bottom: var(--space-16);
}

.install-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.install-description {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.install-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.step-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.step-card h2 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
  color: var(--text-primary);
}

.step-icon {
  font-size: var(--font-size-3xl);
}

.step-list {
  padding-left: var(--space-6);
  margin-bottom: var(--space-6);
}

.step-list li {
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  line-height: 1.6;
}

.step-list strong {
  color: var(--accent-primary);
  font-family: var(--font-mono);
}

.ios-share {
  font-size: var(--font-size-lg);
  color: var(--accent-primary);
}

.step-visual {
  margin-top: var(--space-6);
  text-align: center;
}

.emoji-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-3xl);
}

.emoji-step {
  padding: var(--space-4);
  background: var(--bg-glass-light);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-normal);
}

.emoji-step:hover {
  transform: scale(1.1);
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--accent-primary);
}

.emoji-step-arrow {
  animation: bounce 1s infinite;
}

.emoji-caption {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-mono);
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.step-note {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.step-note p {
  color: var(--accent-primary);
  font-size: var(--font-size-sm);
  text-align: center;
  margin: 0;
}

.install-features {
  text-align: center;
  padding: var(--space-16) 0;
}

.install-features h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-8);
  color: var(--text-primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}

.feature-item {
  padding: var(--space-4);
}

.feature-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-3);
  display: block;
}

.feature-item h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.feature-item p {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

@media (max-width: 768px) {
  .install-title {
    font-size: var(--font-size-4xl);
  }
  
  .install-description {
    font-size: var(--font-size-lg);
  }
  
  .step-card {
    padding: var(--space-4);
  }
  
  .step-card h2 {
    font-size: var(--font-size-xl);
  }
  
  .feature-icon {
    font-size: var(--font-size-3xl);
  }
  
  .feature-item h3 {
    font-size: var(--font-size-lg);
  }
}

/* Installation Progress Styles */
.install-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
    position: relative;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    z-index: 1;
}

.progress-indicator {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-glass);
    border: 2px solid var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.progress-step:hover .progress-indicator {
    background: var(--accent-primary);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.progress-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    max-width: 120px;
}

.progress-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    position: relative;
    margin-top: -40px;
}

.progress-line::before,
.progress-line::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-primary);
    transform: translateY(-50%);
    animation: pulse 2s infinite;
}

.progress-line::before {
    left: 30%;
}

.progress-line::after {
    right: 30%;
}

@keyframes pulse {
    0% {
        transform: translateY(-50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translateY(-50%) scale(1.5);
        opacity: 0.5;
    }
    100% {
        transform: translateY(-50%) scale(1);
        opacity: 1;
    }
}