@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Colors */
  --color-primary: #0062ff;
  --color-primary-light: #00d4ff;
  --color-primary-dark: #004ecc;
  --color-secondary: #00f2fe;
  --color-dark-bg: #070a13;
  --color-dark-card: rgba(15, 23, 42, 0.6);
  --color-dark-card-border: rgba(255, 255, 255, 0.08);
  --color-light-bg: #f5f8ff;
  --color-light-card: rgba(255, 255, 255, 0.8);
  --color-light-card-border: rgba(0, 98, 255, 0.08);
  --color-text-dark: #f8fafc;
  --color-text-dark-muted: #94a3b8;
  --color-text-light: #0f172a;
  --color-text-light-muted: #64748b;
  --color-success: #10b981;
  --color-error: #ef4444;

  /* Layout Settings */
  --header-height: 80px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-xl: 32px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-glow: 0 0 25px rgba(0, 98, 255, 0.35);
  --shadow-premium: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
  --glass-blur: blur(12px);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Outfit', sans-serif;
  color: var(--color-text-light);
  background-color: var(--color-light-bg);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-light);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: 2px;
}

p {
  font-size: 1.05rem;
  color: var(--color-text-light-muted);
  margin-bottom: 1rem;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header Section */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-light-card-border);
  z-index: 1000;
  transition: var(--transition-smooth);
}

header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  height: 70px;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 98, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.logo-icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  animation: shine 3s infinite;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  fill: #fff;
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(90deg, #070a13, var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-light-muted);
  position: relative;
  padding: 8px 0;
  transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transition: var(--transition-smooth);
  border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger-line {
  display: block;
  width: 26px;
  height: 3px;
  background-color: var(--color-text-light);
  margin: 5px 0;
  transition: var(--transition-smooth);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  padding: calc(var(--header-height) + 60px) 0 80px;
  background: radial-gradient(circle at top right, rgba(0, 98, 255, 0.05), transparent 60%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-content {
  max-width: 580px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background-color: rgba(0, 98, 255, 0.08);
  border: 1px solid rgba(0, 98, 255, 0.15);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-text-light) 60%, var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 98, 255, 0.35);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: rotate(45deg);
  animation: shine 4s infinite;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 98, 255, 0.45);
}

.btn-secondary {
  background-color: #fff;
  color: var(--color-text-light);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.btn-secondary:hover {
  background-color: var(--color-accent);
  border-color: rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

/* 3D Wave Animation (Hero Right) */
.hero-animation-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 450px;
  position: relative;
}

.wave-sphere-wrapper {
  position: relative;
  width: 320px;
  height: 320px;
  perspective: 1200px;
}

.wave-glow-backdrop {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, rgba(0, 98, 255, 0.05) 50%, transparent 70%);
  border-radius: 50%;
  filter: blur(15px);
  animation: glowPulse 6s ease-in-out infinite alternate;
}

.shiny-wave-3d {
  width: 100%;
  height: 100%;
  position: relative;
  background: linear-gradient(145deg, rgba(0, 98, 255, 0.75), rgba(0, 242, 254, 0.5));
  border-radius: 60% 40% 60% 40% / 40% 60% 40% 60%;
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: 
    0 15px 35px rgba(0, 98, 255, 0.35),
    inset 0 10px 25px rgba(255, 255, 255, 0.5),
    inset 0 -10px 25px rgba(0, 0, 0, 0.1);
  backdrop-filter: var(--glass-blur);
  animation: 
    morphFluid 8s ease-in-out infinite,
    rotate3D 15s linear infinite;
  transform-style: preserve-3d;
}

.wave-ring-inner {
  position: absolute;
  top: 15px;
  left: 15px;
  right: 15px;
  bottom: 15px;
  border-radius: inherit;
  border: 1px dashed rgba(255, 255, 255, 0.6);
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.25), transparent);
  box-shadow: inset 0 0 20px rgba(0, 242, 254, 0.3);
  animation: morphFluid 8s ease-in-out infinite reverse;
}

.floating-glass-card {
  position: absolute;
  bottom: 20px;
  right: -20px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--border-radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-premium);
  animation: floatCard 4s ease-in-out infinite;
  z-index: 10;
}

.glass-card-icon {
  width: 42px;
  height: 42px;
  background: rgba(0, 98, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.glass-card-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.glass-card-info h4 {
  font-size: 1.1rem;
  color: var(--color-text-light);
}

.glass-card-info p {
  font-size: 0.85rem;
  margin: 0;
}

/* Calculator Section */
.calc-section {
  padding: 80px 0;
  background-color: #fff;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light-muted);
}

.calculator-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  background: var(--color-light-bg);
  border: 1px solid var(--color-light-card-border);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-premium);
}

.calculator-form-side {
  padding: 40px;
}

.calculator-results-side {
  background: linear-gradient(135deg, #070a13 0%, #111827 100%);
  color: var(--color-text-dark);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.calculator-results-side::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 98, 255, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* Inputs Form Elements */
.unit-toggle-container {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 24px;
}

.toggle-group {
  display: flex;
  background-color: rgba(0, 0, 0, 0.05);
  padding: 4px;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.toggle-btn {
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-light-muted);
  border-radius: 6px;
  transition: var(--transition-smooth);
}

.toggle-btn.active {
  background-color: #fff;
  color: var(--color-primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.input-group.full-width {
  grid-column: span 2;
}

label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

label svg {
  width: 16px;
  height: 16px;
  fill: var(--color-primary);
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.option-select {
  padding: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background-color: #fff;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  color: var(--color-text-light-muted);
}

.option-select:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(0, 98, 255, 0.02);
}

.option-select.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 98, 255, 0.2);
}

.text-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--border-radius-sm);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: var(--transition-smooth);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 98, 255, 0.12);
}

.input-suffix {
  position: absolute;
  right: 16px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-light-muted);
  pointer-events: none;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height='24'%3E%3Cpath fill='none' d='0 0h24v24H0z'/%3E%3Cpath d='M12 16l-6-6h12z' fill='rgba(15, 23, 42, 0.5)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

/* Custom Range Slider */
.slider-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slider-val-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.slider-value {
  font-weight: 700;
  color: var(--color-primary);
}

.range-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.08);
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0, 98, 255, 0.4);
  transition: var(--transition-smooth);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.form-actions {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

/* Results Formatting */
.results-header {
  margin-bottom: 30px;
}

.results-header h3 {
  color: #fff;
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.results-header p {
  color: var(--color-text-dark-muted);
  font-size: 0.95rem;
  margin: 0;
}

.main-result-card {
  text-align: center;
  margin-bottom: 30px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* Circular Progress Indicator */
.progress-radial-wrapper {
  position: relative;
  width: 180px;
  height: 180px;
  margin-bottom: 20px;
}

.progress-radial-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 10;
}

.progress-fill {
  fill: none;
  stroke: url(#result-grad);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 471;
  stroke-dashoffset: 471;
  transition: stroke-dashoffset 1s ease-in-out;
}

.progress-center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.progress-val-num {
  font-size: 2.3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.progress-val-unit {
  font-size: 0.95rem;
  color: var(--color-text-dark-muted);
  font-weight: 500;
  margin-top: 4px;
}

.glasses-equiv-text {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.glasses-equiv-text svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Secondary Results details */
.recommendation-alert {
  background: rgba(0, 98, 255, 0.08);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--border-radius-sm);
  padding: 16px;
  margin-bottom: 30px;
}

.recommendation-alert h4 {
  color: var(--color-secondary);
  font-size: 1.05rem;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.recommendation-alert h4 svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.recommendation-alert p {
  color: var(--color-text-dark-muted);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.4;
}

.result-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.btn-result {
  padding: 12px 20px;
  font-size: 0.95rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  border: none;
  font-weight: 600;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-copy {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-copy:hover {
  background-color: var(--color-primary-dark);
}

.btn-reset-form {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-reset-form:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* Features Section */
.features-section {
  padding: 80px 0;
  background-color: var(--color-light-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: #fff;
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: var(--border-radius-lg);
  padding: 32px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.015);
  transition: var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-premium);
  border-color: var(--color-light-card-border);
}

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--border-radius-md);
  background: rgba(0, 98, 255, 0.06);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--transition-smooth);
}

.feature-card:hover .feature-icon {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 98, 255, 0.25);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.95rem;
  margin: 0;
}

/* Statistics Section */
.stats-section {
  background: linear-gradient(135deg, #070a13 0%, #111827 100%);
  color: var(--color-text-dark);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item {
  position: relative;
}

.stat-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-secondary);
  line-height: 1;
  margin-bottom: 10px;
  display: inline-block;
}

.stat-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 6px;
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--color-text-dark-muted);
}

/* Testimonials Section */
.testimonials-section {
  padding: 80px 0;
  background-color: #fff;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.testimonial-card {
  background-color: var(--color-light-bg);
  border: 1px solid var(--color-light-card-border);
  border-radius: var(--border-radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.01);
  transition: var(--transition-smooth);
}

.testimonial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-premium);
  border-color: rgba(0, 98, 255, 0.15);
}

.testimonial-stars {
  color: #fbbf24;
  margin-bottom: 16px;
}

.testimonial-stars svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.testimonial-text {
  font-style: italic;
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 8px rgba(0, 98, 255, 0.15);
}

.testimonial-user-info h4 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.testimonial-user-info p {
  font-size: 0.8rem;
  margin: 0;
}

/* Call To Action Section */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section h2 {
  color: #fff;
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.cta-section h2::after {
  display: none;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 36px;
}

/* Footer Section */
footer {
  background-color: #070a13;
  color: var(--color-text-dark-muted);
  padding: 80px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-col h3 {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 24px;
  font-weight: 600;
}

.footer-col p {
  color: var(--color-text-dark-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Social Icons */
.social-links {
  display: flex;
  gap: 12px;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dark-muted);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.social-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.social-icon:hover {
  transform: translateY(-3px);
  color: #fff;
}

.social-icon.facebook:hover { background-color: #1877F2; }
.social-icon.instagram:hover { background-color: #E4405F; }
.social-icon.twitter:hover { background-color: #000000; }
.social-icon.linkedin:hover { background-color: #0077B5; }

/* Footer Lists */
.footer-list {
  list-style: none;
}

.footer-list li {
  margin-bottom: 12px;
}

.footer-list a {
  text-decoration: none;
  color: var(--color-text-dark-muted);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  display: inline-block;
}

.footer-list a:hover {
  color: var(--color-primary-light);
  transform: translateX(4px);
}

/* Contact Info list */
.contact-info-list {
  list-style: none;
}

.contact-info-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.contact-info-list svg {
  width: 18px;
  height: 18px;
  fill: var(--color-primary-light);
  flex-shrink: 0;
  margin-top: 3px;
}

.contact-info-list span {
  color: var(--color-text-dark-muted);
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.9rem;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.footer-logo-wrap .logo-text {
  background: linear-gradient(90deg, #fff, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.copyright {
  color: var(--color-text-dark-muted);
}

/* SEO Content Section */
.seo-section {
  padding: 80px 0;
  background-color: #fff;
  border-top: 1px solid var(--color-light-card-border);
}

.seo-rich-content {
  max-width: 900px;
  margin: 0 auto;
}

.seo-rich-content h3 {
  font-size: 1.6rem;
  margin: 40px 0 16px;
  color: var(--color-text-light);
}

.seo-rich-content h3:first-of-type {
  margin-top: 0;
}

.seo-rich-content ul, .seo-rich-content ol {
  margin-bottom: 20px;
  padding-left: 20px;
}

.seo-rich-content li {
  margin-bottom: 8px;
  font-size: 1.05rem;
  color: var(--color-text-light-muted);
}

.seo-rich-content li strong {
  color: var(--color-text-light);
}

.seo-rich-content blockquote {
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-light-bg);
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  font-style: italic;
}

.seo-rich-content blockquote p {
  margin: 0;
  color: var(--color-text-light);
}

/* Benefits Grid inside SEO content */
.benefits-icon-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 24px 0 36px;
}

.benefit-item {
  background-color: var(--color-light-bg);
  border: 1px solid rgba(0, 98, 255, 0.05);
  border-radius: var(--border-radius-md);
  padding: 20px;
  display: flex;
  gap: 16px;
}

.benefit-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #fff;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.benefit-item-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.benefit-item-text h4 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.benefit-item-text p {
  font-size: 0.9rem;
  margin: 0;
}

/* Accordion FAQ Styling */
.faq-accordion {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--color-light-bg);
  border: 1px solid var(--color-light-card-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-light);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  outline: none;
}

.faq-question svg {
  width: 18px;
  height: 18px;
  fill: var(--text-muted);
  transition: var(--transition-smooth);
  flex-shrink: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
  background-color: #fff;
}

.faq-answer-inner {
  padding: 24px;
  border-top: 1px solid var(--color-light-card-border);
}

.faq-answer p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active {
  border-color: rgba(0, 98, 255, 0.25);
  box-shadow: 0 4px 20px rgba(0, 98, 255, 0.05);
}

.faq-item.active .faq-question {
  color: var(--color-primary);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  fill: var(--color-primary);
}

.faq-item.active .faq-answer {
  max-height: 1000px;
  transition: max-height 0.8s cubic-bezier(1, 0, 1, 0);
}

/* Secondary Pages Specific Layout (About, Contact, Terms) */
.page-hero {
  padding: calc(var(--header-height) + 60px) 0 60px;
  background: linear-gradient(135deg, #070a13 0%, #111827 100%);
  color: var(--color-text-dark);
  text-align: center;
}

.page-hero h1 {
  color: #fff;
  font-size: 3rem;
  margin-bottom: 12px;
}

.page-hero h1::after {
  display: none;
}

.page-hero .breadcrumbs {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-dark-muted);
}

.page-hero .breadcrumbs a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.page-hero .breadcrumbs a:hover {
  text-decoration: underline;
}

.page-content-wrapper {
  padding: 80px 0;
  background-color: #fff;
}

.inner-rich-text {
  max-width: 800px;
  margin: 0 auto;
}

.inner-rich-text h2 {
  font-size: 1.8rem;
  margin: 36px 0 16px;
}

.inner-rich-text h3 {
  font-size: 1.35rem;
  margin: 28px 0 12px;
}

.inner-rich-text p {
  margin-bottom: 20px;
}

/* Contact Page Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info-sidebar {
  background-color: var(--color-light-bg);
  border: 1px solid var(--color-light-card-border);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-info-sidebar h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.contact-info-sidebar p {
  font-size: 0.95rem;
  margin-bottom: 30px;
}

.contact-sidebar-info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-sidebar-info-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-sidebar-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  background-color: rgba(0, 98, 255, 0.08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-sidebar-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.contact-sidebar-text h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.contact-sidebar-text p {
  font-size: 0.9rem;
  margin: 0;
}

.contact-form-card {
  background-color: #fff;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: var(--shadow-premium);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  position: relative;
}

.form-group {
  margin-bottom: 24px;
  position: relative;
}

.form-group label {
  margin-bottom: 8px;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--border-radius-sm);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: var(--transition-smooth);
}

.form-group textarea {
  height: 150px;
  resize: vertical;
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 98, 255, 0.12);
}

.error-message {
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 4px;
  display: none;
}

.form-group.invalid input, .form-group.invalid textarea {
  border-color: var(--color-error);
}

.form-group.invalid .error-message {
  display: block;
}

/* Success Message Overlay */
.success-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #fff;
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  z-index: 10;
}

.success-overlay.active {
  opacity: 1;
  visibility: visible;
}

.success-icon-wrap {
  width: 70px;
  height: 70px;
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  animation: scaleIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.success-icon-wrap svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.success-overlay h3 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.success-overlay p {
  font-size: 1rem;
  margin-bottom: 24px;
}

/* Animations */
@keyframes morphFluid {
  0% {
    border-radius: 60% 40% 60% 40% / 40% 60% 40% 60%;
  }
  50% {
    border-radius: 45% 55% 35% 65% / 55% 45% 55% 45%;
  }
  100% {
    border-radius: 60% 40% 60% 40% / 40% 60% 40% 60%;
  }
}

@keyframes rotate3D {
  0% {
    transform: rotate3d(1, 1, 1, 0deg);
  }
  100% {
    transform: rotate3d(1, 1, 1, 360deg);
  }
}

@keyframes glowPulse {
  0% {
    filter: blur(15px);
    opacity: 0.7;
  }
  100% {
    filter: blur(25px);
    opacity: 1;
  }
}

@keyframes floatCard {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
  100% {
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes shine {
  0% {
    left: -50%;
    top: -50%;
  }
  100% {
    left: 150%;
    top: 150%;
  }
}

/* Scroll Fade Animation Helper */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Rules */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-grid {
    gap: 32px;
  }

  .calculator-container {
    grid-template-columns: 1fr;
  }

  .calculator-results-side {
    padding: 40px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 32px;
  }
  
  .footer-col:first-of-type {
    grid-column: span 3;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }

  /* Header & Navigation Menu Mobile Slide-in */
  .hamburger {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    transition: var(--transition-smooth);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 999;
  }

  .nav-menu.active {
    left: 0;
  }

  /* Hamburger active lines states */
  .hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding-top: calc(var(--header-height) + 30px);
  }

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

  .hero-content {
    margin: 0 auto;
  }

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

  .hero-animation-container {
    height: 350px;
  }

  .wave-sphere-wrapper {
    width: 250px;
    height: 250px;
  }

  .floating-glass-card {
    right: 50%;
    transform: translateX(50%);
    animation: floatCardMobile 4s ease-in-out infinite;
  }

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

  .input-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .input-group.full-width {
    grid-column: span 1;
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .benefits-icon-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-col:first-of-type {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.2rem;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .calculator-form-side {
    padding: 24px;
  }

  .calculator-results-side {
    padding: 24px;
  }

  .result-buttons {
    grid-template-columns: 1fr;
  }

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