/* public_pages/styles.css */
/* Design System: Emerald and Neon-Mint Dark Glass Constitution */
/* Mobile-First and Ultra-Responsive across all viewports (320px to 1440px+) */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --bg-obsidian: #040906;
  --bg-dark-forest: #07110B;
  --bg-surface-glass: rgba(7, 17, 11, 0.75);
  --bg-card: radial-gradient(120% 120% at 85% 15%, rgba(92, 225, 126, 0.12) 0%, rgba(6, 14, 9, 0.96) 65%, #050B07 100%);
  --bg-card-hover: radial-gradient(120% 120% at 85% 15%, rgba(123, 241, 150, 0.18) 0%, rgba(8, 20, 13, 0.98) 65%, #061008 100%);
  
  --mint-primary: #7BF196;
  --mint-gradient: linear-gradient(90deg, #8CF6A3 0%, #67E484 100%);
  --mint-glow: rgba(123, 241, 150, 0.28);
  --mint-glow-strong: rgba(123, 241, 150, 0.45);
  --text-dark-contrast: #051008;

  --border-glass: rgba(123, 241, 150, 0.22);
  --border-glass-subtle: rgba(123, 241, 150, 0.12);
  --border-glass-hover: rgba(123, 241, 150, 0.42);

  --text-primary: #FFFFFF;
  --text-secondary: #D1E7D6;
  --text-muted: #8FA896;
  --text-dim: #5B7362;

  --danger-crimson: #FF5A5A;
  --danger-glass: rgba(255, 90, 90, 0.12);
  --danger-border: rgba(255, 90, 90, 0.28);

  --warning-amber: #F6C445;
  --warning-glass: rgba(246, 196, 69, 0.12);
  --warning-border: rgba(246, 196, 69, 0.28);

  --radius-card: 24px;
  --radius-pill: 9999px;
  --radius-sm: 12px;
  --radius-md: 16px;

  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
  font-family: var(--font-body);
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--bg-obsidian);
  background-image: 
    radial-gradient(circle at 85% 5%, rgba(100, 236, 135, 0.22) 0%, rgba(27, 94, 49, 0.15) 30%, transparent 65%),
    radial-gradient(circle at 10% 30%, rgba(92, 225, 126, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 90% 70%, rgba(100, 236, 135, 0.12) 0%, transparent 50%),
    linear-gradient(180deg, #040906 0%, #07110B 50%, #040906 100%);
  background-attachment: fixed;
}

/* Atmospheric Ambient Lights */
.ambient-glow-top {
  position: absolute;
  top: 0;
  right: 0;
  width: 600px;
  height: 600px;
  max-width: 90vw;
  max-height: 90vw;
  background: radial-gradient(circle, rgba(100, 236, 135, 0.25) 0%, rgba(27, 94, 49, 0.15) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  filter: blur(40px);
}

.ambient-glow-center {
  position: absolute;
  top: 45%;
  left: -100px;
  width: 500px;
  height: 500px;
  max-width: 80vw;
  background: radial-gradient(circle, rgba(92, 225, 126, 0.12) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
  filter: blur(50px);
}

/* Typography Standards */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

h1 { font-size: clamp(1.85rem, 6.5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 4.2vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 2.8vw, 1.75rem); }
h4 { font-size: clamp(1.05rem, 2vw, 1.35rem); }

p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 16px;
  padding-right: 16px;
  position: relative;
  z-index: 1;
}

@media (min-width: 640px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

/* Floating Glass Header */
.site-header {
  position: sticky;
  top: 8px;
  z-index: 100;
  padding: 0 10px;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .site-header {
    top: 14px;
    padding: 0 16px;
    margin-bottom: 30px;
  }
}

.header-glass {
  background: rgba(7, 17, 11, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px rgba(123, 241, 150, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 8px;
}

@media (min-width: 640px) {
  .header-glass {
    padding: 10px 20px;
    gap: 14px;
  }
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  min-width: 0;
  flex-shrink: 1;
}

@media (min-width: 640px) {
  .brand-link {
    gap: 12px;
  }
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  box-shadow: 0 0 16px rgba(123, 241, 150, 0.35);
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 640px) {
  .brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

@media (min-width: 640px) {
  .brand-name {
    font-size: 1.15rem;
  }
}

.brand-name span {
  color: var(--mint-primary);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 22px;
  list-style: none;
}

@media (min-width: 960px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: color 0.2s ease;
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--mint-gradient);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--mint-glow);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .header-actions {
    gap: 10px;
  }
}

/* Glass Buttons */
.btn-mint {
  background: var(--mint-gradient);
  color: var(--text-dark-contrast);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.86rem;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  box-shadow: 0 0 16px var(--mint-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
  min-height: 38px;
}

@media (min-width: 640px) {
  .btn-mint {
    font-size: 0.92rem;
    padding: 10px 20px;
    gap: 8px;
    min-height: 42px;
  }
}

.btn-mint:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px var(--mint-glow-strong);
}

.btn-glass {
  background: rgba(123, 241, 150, 0.08);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.86rem;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-glass);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  backdrop-filter: blur(12px);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
  min-height: 38px;
}

@media (min-width: 640px) {
  .btn-glass {
    font-size: 0.92rem;
    padding: 10px 18px;
    gap: 8px;
    min-height: 42px;
  }
}

.btn-glass:hover {
  background: rgba(123, 241, 150, 0.16);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.btn-mobile-menu {
  background: rgba(123, 241, 150, 0.08);
  border: 1px solid var(--border-glass);
  color: var(--mint-primary);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .btn-mobile-menu {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }
}

@media (min-width: 960px) {
  .btn-mobile-menu {
    display: none;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 9, 6, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 250;
  display: none;
  flex-direction: column;
  padding: 20px 16px;
  animation: fadeIn 0.2s ease-out forwards;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-drawer.open {
  display: flex;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
}

.drawer-link {
  color: #FFFFFF;
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all 0.2s ease;
  min-height: 48px;
}

.drawer-link:hover, .drawer-link.active {
  background: rgba(123, 241, 150, 0.12);
  border-color: var(--border-glass);
  color: var(--mint-primary);
}

.drawer-cta-group {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 20px;
}

/* Rim-Lit Dark Glass Cards */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 20px 16px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

@media (min-width: 640px) {
  .glass-card {
    padding: 28px;
    border-radius: var(--radius-card);
  }
}

.glass-card:hover {
  border-color: var(--border-glass-hover);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6), 0 0 24px rgba(123, 241, 150, 0.14);
}

.glass-card-sm {
  padding: 16px;
  border-radius: var(--radius-sm);
}

@media (min-width: 640px) {
  .glass-card-sm {
    padding: 20px;
    border-radius: var(--radius-md);
  }
}

/* Badges */
.badge-mint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(123, 241, 150, 0.12);
  border: 1px solid var(--border-glass);
  color: var(--mint-primary);
  font-family: var(--font-heading);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 12px rgba(123, 241, 150, 0.15);
  max-width: 100%;
}

@media (min-width: 640px) {
  .badge-mint {
    font-size: 0.8rem;
    padding: 6px 14px;
    letter-spacing: 0.08em;
  }
}

.badge-warning {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--warning-glass);
  border: 1px solid var(--warning-border);
  color: var(--warning-amber);
  font-family: var(--font-heading);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
}

.badge-danger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--danger-glass);
  border: 1px solid var(--danger-border);
  color: var(--danger-crimson);
  font-family: var(--font-heading);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
}

/* Hero Section */
.hero-section {
  padding: 20px 0 50px 0;
  text-align: center;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 40px 0 70px 0;
  }
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

.hero-title {
  margin-top: 16px;
  margin-bottom: 16px;
  line-height: 1.15;
}

.hero-typing-wrap {
  display: block;
  min-height: 2.8em;
  color: var(--mint-primary);
  font-weight: 800;
  text-shadow: 0 0 20px rgba(123, 241, 150, 0.35);
}

.typing-cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  vertical-align: -0.1em;
  background-color: var(--mint-primary);
  margin-left: 4px;
  animation: blink 0.8s infinite;
  box-shadow: 0 0 10px var(--mint-primary);
}

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

.hero-subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 720px;
  margin: 0 auto 28px auto;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  margin-bottom: 30px;
  width: 100%;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 600px) {
  .hero-cta-group {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    max-width: none;
    gap: 16px;
    margin-bottom: 40px;
  }
}

.hero-version-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

@media (min-width: 640px) {
  .hero-version-tag {
    gap: 18px;
    font-size: 0.85rem;
  }
}

.hero-version-tag span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Hero Showcase Frame */
.hero-showcase {
  margin-top: 36px;
  position: relative;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-showcase {
    margin-top: 50px;
  }
}

.mockup-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 860px) {
  .mockup-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
  }
}

.mockup-main-card {
  padding: 20px 16px;
  text-align: left;
}

@media (min-width: 640px) {
  .mockup-main-card {
    padding: 30px;
  }
}

.mockup-strip {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stat-pill {
  background: rgba(123, 241, 150, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

@media (min-width: 640px) {
  .stat-pill {
    padding: 16px;
    border-radius: var(--radius-md);
  }
}

.stat-pill-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

@media (min-width: 640px) {
  .stat-pill-label {
    font-size: 0.85rem;
    gap: 8px;
  }
}

.stat-pill-val {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: #FFFFFF;
}

@media (min-width: 640px) {
  .stat-pill-val {
    font-size: 1.15rem;
  }
}

.stat-pill-val.green {
  color: var(--mint-primary);
}

.stat-pill-val.amber {
  color: var(--warning-amber);
}

/* Sections */
.section-padding {
  padding: 44px 0;
}

@media (min-width: 768px) {
  .section-padding {
    padding: 70px 0;
  }
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 32px auto;
}

@media (min-width: 768px) {
  .section-header {
    margin-bottom: 46px;
  }
}

.section-header p {
  margin-top: 12px;
  font-size: 0.98rem;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .section-header p {
    font-size: 1.1rem;
    margin-top: 14px;
  }
}

/* Interactive Income Switcher */
.income-tabs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  background: rgba(7, 17, 11, 0.7);
  padding: 6px;
  border-radius: 18px;
  border: 1px solid var(--border-glass-subtle);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 540px) {
  .income-tabs {
    flex-direction: row;
    border-radius: var(--radius-pill);
    gap: 10px;
    margin-bottom: 32px;
  }
}

.income-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 12px 14px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
}

@media (min-width: 540px) {
  .income-tab-btn {
    border-radius: var(--radius-pill);
    font-size: 0.95rem;
    padding: 12px 20px;
  }
}

.income-tab-btn.active {
  background: var(--mint-gradient);
  color: var(--text-dark-contrast);
  box-shadow: 0 0 20px var(--mint-glow);
}

.income-view {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.income-view.active {
  display: block;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 768px) {
  .comparison-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

.compare-card-bad {
  background: radial-gradient(120% 120% at 85% 15%, rgba(255, 90, 90, 0.08) 0%, rgba(18, 8, 8, 0.95) 65%, #0A0505 100%);
  border: 1px solid var(--danger-border);
}

.compare-card-good {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
}

.compare-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  line-height: 1.5;
}

@media (min-width: 640px) {
  .compare-list li {
    font-size: 0.95rem;
    gap: 12px;
  }
}

.compare-list-bad li {
  color: #F8D7D7;
}

.compare-list-good li {
  color: #D3F4DB;
}

.compare-icon-bad {
  color: var(--danger-crimson);
  flex-shrink: 0;
  margin-top: 3px;
}

.compare-icon-good {
  color: var(--mint-primary);
  flex-shrink: 0;
  margin-top: 3px;
}

/* Interactive Silent Wealth Leak Calculator */
.calc-container {
  max-width: 860px;
  margin: 0 auto;
}

.calc-slider-box {
  margin: 24px 0 28px 0;
}

@media (min-width: 640px) {
  .calc-slider-box {
    margin: 30px 0 36px 0;
  }
}

.calc-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.calc-slider-val {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--mint-primary);
  text-shadow: 0 0 16px var(--mint-glow);
}

@media (min-width: 640px) {
  .calc-slider-val {
    font-size: 2.2rem;
  }
}

.custom-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 10px;
  border-radius: 5px;
  background: rgba(123, 241, 150, 0.18);
  outline: none;
  cursor: pointer;
  transition: background 0.2s;
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--mint-primary);
  box-shadow: 0 0 16px var(--mint-glow-strong);
  cursor: pointer;
  border: 2px solid #040906;
}

.custom-slider::-moz-range-thumb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--mint-primary);
  box-shadow: 0 0 16px var(--mint-glow-strong);
  cursor: pointer;
  border: 2px solid #040906;
}

.calc-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  justify-content: center;
}

.calc-preset-chip {
  background: rgba(123, 241, 150, 0.08);
  border: 1px solid var(--border-glass-subtle);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 34px;
}

@media (min-width: 640px) {
  .calc-preset-chip {
    font-size: 0.85rem;
    padding: 6px 14px;
  }
}

.calc-preset-chip:hover, .calc-preset-chip.active {
  background: rgba(123, 241, 150, 0.22);
  border-color: var(--border-glass);
  color: var(--mint-primary);
}

.calc-results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 24px;
}

@media (min-width: 640px) {
  .calc-results-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 30px;
  }
}

.calc-result-card {
  background: rgba(5, 12, 8, 0.9);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  text-align: center;
}

@media (min-width: 640px) {
  .calc-result-card {
    padding: 20px;
    border-radius: var(--radius-md);
  }
}

.calc-result-card.highlight {
  border-color: var(--mint-primary);
  box-shadow: 0 0 20px var(--mint-glow);
}

.calc-result-period {
  font-size: 0.74rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

@media (min-width: 640px) {
  .calc-result-period {
    font-size: 0.85rem;
    margin-bottom: 6px;
  }
}

.calc-result-amount {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--danger-crimson);
}

@media (min-width: 640px) {
  .calc-result-amount {
    font-size: 1.85rem;
  }
}

.calc-result-card.highlight .calc-result-amount {
  color: var(--mint-primary);
}

.calc-result-subtext {
  font-size: 0.74rem;
  color: var(--text-dim);
  margin-top: 4px;
  line-height: 1.3;
}

@media (min-width: 640px) {
  .calc-result-subtext {
    font-size: 0.8rem;
    margin-top: 6px;
  }
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.feature-card {
  display: flex;
  flex-direction: column;
}

.feature-icon-wrap {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(123, 241, 150, 0.12);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mint-primary);
  margin-bottom: 16px;
  box-shadow: 0 0 16px rgba(123, 241, 150, 0.12);
}

@media (min-width: 640px) {
  .feature-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    margin-bottom: 20px;
  }
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

@media (min-width: 640px) {
  .feature-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
  }
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (min-width: 640px) {
  .feature-card p {
    font-size: 0.93rem;
  }
}

/* Image Frames */
.img-glass-frame {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  background: #040906;
}

@media (min-width: 640px) {
  .img-glass-frame {
    border-radius: var(--radius-card);
  }
}

.img-glass-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.img-glass-frame:hover img {
  transform: scale(1.03);
}

.img-overlay-emerald {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 9, 6, 0.1) 0%, rgba(7, 17, 11, 0.85) 100%);
  pointer-events: none;
}

/* Competitive Comparison Table */
.comparison-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 18px;
  border: 1px solid var(--border-glass);
  background: rgba(7, 17, 11, 0.8);
  backdrop-filter: blur(16px);
}

@media (min-width: 640px) {
  .comparison-table-wrap {
    border-radius: var(--radius-card);
  }
}

.mobile-swipe-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(123, 241, 150, 0.08);
  color: var(--mint-primary);
  font-size: 0.8rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border-glass-subtle);
}

@media (min-width: 768px) {
  .mobile-swipe-hint {
    display: none;
  }
}

.comp-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  text-align: left;
}

.comp-table th, .comp-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-glass-subtle);
  font-size: 0.85rem;
}

@media (min-width: 640px) {
  .comp-table th, .comp-table td {
    padding: 16px 20px;
    font-size: 0.92rem;
  }
}

.comp-table th {
  background: rgba(123, 241, 150, 0.08);
  font-family: var(--font-heading);
  font-weight: 700;
  color: #FFFFFF;
}

.comp-table tr:last-child td {
  border-bottom: none;
}

.comp-table .brand-col {
  color: var(--mint-primary);
  font-weight: 700;
  background: rgba(123, 241, 150, 0.05);
}

/* Step Installation Cards */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

.step-card {
  text-align: left;
  padding: 20px 16px;
}

@media (min-width: 640px) {
  .step-card {
    padding: 24px;
  }
}

.step-number {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--mint-gradient);
  color: var(--text-dark-contrast);
  font-family: var(--font-heading);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-bottom: 14px;
  box-shadow: 0 0 16px var(--mint-glow);
}

/* Developer Spotlight Card */
.dev-card {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

@media (min-width: 768px) {
  .dev-card {
    grid-template-columns: 240px 1fr;
    gap: 30px;
  }
}

.dev-avatar-wrap {
  width: 100%;
  max-width: 180px;
  margin: 0 auto;
  aspect-ratio: 1;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--mint-primary);
  box-shadow: 0 0 30px var(--mint-glow);
  position: relative;
}

@media (min-width: 640px) {
  .dev-avatar-wrap {
    max-width: 220px;
    border-radius: 24px;
  }
}

.dev-avatar-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dev-avatar-icon-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 50%, rgba(123, 241, 150, 0.22) 0%, rgba(7, 17, 11, 0.98) 100%);
  color: var(--mint-primary);
}

.dev-avatar-icon-placeholder svg,
.dev-avatar-icon-placeholder i {
  width: 72px;
  height: 72px;
  stroke-width: 1.5;
  filter: drop-shadow(0 0 14px var(--mint-glow-strong));
}

.dev-contacts-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.dev-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(123, 241, 150, 0.05);
  border: 1px solid var(--border-glass-subtle);
  transition: all 0.2s ease;
  min-height: 44px;
}

@media (min-width: 640px) {
  .dev-contact-item {
    font-size: 0.95rem;
    padding: 10px 14px;
    gap: 12px;
  }
}

.dev-contact-item:hover {
  background: rgba(123, 241, 150, 0.15);
  border-color: var(--mint-primary);
  color: var(--mint-primary);
  transform: translateX(4px);
}

/* Contact Cards & Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
  }
}

.reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 480px) {
  .reach-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}

.reach-card {
  text-decoration: none;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.2s ease;
  min-height: 48px;
}

@media (min-width: 640px) {
  .reach-card {
    padding: 20px;
    gap: 10px;
  }
}

.reach-card:hover {
  border-color: var(--mint-primary);
  transform: translateY(-3px);
}

.reach-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(123, 241, 150, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mint-primary);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 14px;
  background: rgba(5, 12, 8, 0.85);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-family: var(--font-body);
  font-size: 16px; /* 16px prevents iOS zoom-on-focus */
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  min-height: 44px;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--mint-primary);
  box-shadow: 0 0 16px var(--mint-glow);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
}

/* FAQ Accordion */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border-glass-subtle);
  border-radius: var(--radius-sm);
  background: rgba(7, 17, 11, 0.7);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

@media (min-width: 640px) {
  .faq-item {
    border-radius: var(--radius-md);
    gap: 16px;
  }
}

.faq-item.open {
  border-color: var(--border-glass);
}

.faq-question {
  width: 100%;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  min-height: 48px;
}

@media (min-width: 640px) {
  .faq-question {
    padding: 20px 24px;
    font-size: 1.05rem;
    gap: 16px;
  }
}

.faq-icon {
  color: var(--mint-primary);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 18px;
}

@media (min-width: 640px) {
  .faq-answer {
    padding: 0 24px;
  }
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .faq-answer p {
    font-size: 0.95rem;
    line-height: 1.65;
  }
}

/* Articles Layout for Education Page */
.article-container {
  max-width: 840px;
  margin: 0 auto;
}

.article-card {
  margin-bottom: 34px;
  padding: 20px 16px;
}

@media (min-width: 640px) {
  .article-card {
    margin-bottom: 50px;
    padding: 36px;
  }
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.article-reading-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-card h2 {
  margin-bottom: 16px;
  line-height: 1.25;
}

.article-body p {
  font-size: 0.96rem;
  line-height: 1.7;
  margin-bottom: 18px;
}

@media (min-width: 640px) {
  .article-body p {
    font-size: 1.02rem;
    line-height: 1.75;
    margin-bottom: 20px;
  }
}

.math-callout-box {
  background: rgba(123, 241, 150, 0.08);
  border-left: 4px solid var(--mint-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 18px;
  margin: 22px 0;
}

@media (min-width: 640px) {
  .math-callout-box {
    padding: 20px 24px;
    margin: 26px 0;
  }
}

.math-callout-box h4 {
  color: var(--mint-primary);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.math-callout-box p {
  font-size: 0.92rem;
  margin-bottom: 0;
}

.table-scroll-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 20px 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass-subtle);
}

.article-timeline-table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.article-timeline-table th, .article-timeline-table td {
  padding: 10px 14px;
  border: 1px solid var(--border-glass-subtle);
  text-align: left;
}

.article-timeline-table th {
  background: rgba(123, 241, 150, 0.1);
  color: #FFFFFF;
  font-family: var(--font-heading);
}

.article-timeline-table tr:nth-child(even) {
  background: rgba(7, 17, 11, 0.5);
}

/* Sticky TOC */
.toc-bar {
  background: rgba(7, 17, 11, 0.88);
  border: 1px solid var(--border-glass-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 30px;
  backdrop-filter: blur(12px);
}

@media (min-width: 640px) {
  .toc-bar {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 40px;
  }
}

.toc-title {
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--mint-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.86rem;
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  min-height: 36px;
}

@media (min-width: 640px) {
  .toc-link {
    font-size: 0.9rem;
    padding: 0;
    min-height: auto;
  }
}

.toc-link:hover {
  color: var(--mint-primary);
}

/* Sticky Bottom Mobile Bar */
.mobile-sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(4, 9, 6, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-glass);
  padding: 10px 16px;
  padding-bottom: max(10px, env(safe-area-inset-bottom));
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

@media (min-width: 768px) {
  .mobile-sticky-cta {
    display: none;
  }
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--border-glass-subtle);
  background: #040805;
  padding: 40px 0 36px 0;
  margin-top: 40px;
  position: relative;
  z-index: 10;
}

@media (min-width: 768px) {
  .site-footer {
    padding: 60px 0;
    margin-top: 60px;
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 50px;
  }
}

.footer-col h4 {
  font-size: 0.98rem;
  margin-bottom: 12px;
  color: #FFFFFF;
}

@media (min-width: 768px) {
  .footer-col h4 {
    font-size: 1rem;
    margin-bottom: 18px;
  }
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
}

@media (min-width: 768px) {
  .footer-link {
    font-size: 0.9rem;
    min-height: auto;
  }
}

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

.footer-bottom {
  border-top: 1px solid var(--border-glass-subtle);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    text-align: left;
    padding-top: 26px;
    font-size: 0.85rem;
    gap: 16px;
  }
}

/* Modal for APK Instructions */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-overlay.open {
  display: flex;
}

.modal-box {
  background: radial-gradient(120% 120% at 85% 15%, rgba(92, 225, 126, 0.16) 0%, rgba(6, 14, 9, 0.98) 65%, #050B07 100%);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px 18px;
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7), 0 0 30px var(--mint-glow);
  animation: modalScale 0.25s ease-out;
}

@media (min-width: 640px) {
  .modal-box {
    border-radius: var(--radius-card);
    padding: 30px;
  }
}

@keyframes modalScale {
  0% { transform: scale(0.94); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(123, 241, 150, 0.1);
  border: 1px solid var(--border-glass-subtle);
  color: #FFFFFF;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-close-btn:hover {
  background: rgba(123, 241, 150, 0.25);
  color: var(--mint-primary);
}

/* Toast Message */
.toast-msg {
  position: fixed;
  bottom: 80px;
  right: 16px;
  left: 16px;
  background: rgba(7, 17, 11, 0.95);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #FFFFFF;
  display: none;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6), 0 0 16px var(--mint-glow);
  z-index: 350;
  animation: slideUp 0.3s ease-out;
  font-size: 0.88rem;
}

@media (min-width: 640px) {
  .toast-msg {
    left: auto;
    right: 20px;
    padding: 14px 20px;
    font-size: 0.95rem;
  }
}

@keyframes slideUp {
  0% { transform: translateY(20px); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

/* Reveal on scroll utility classes */
.reveal-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1), transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive grid helper */
.md-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .md-grid-2 {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 30px;
    align-items: center;
  }
}

/* Responsive adjustments for extra small mobile screens (320px to 480px) */
@media (max-width: 480px) {
  .site-header {
    top: 4px;
    padding: 0 4px;
  }

  .header-glass {
    padding: 8px 12px;
    border-radius: 16px;
  }

  .brand-name {
    font-size: 0.9rem;
  }

  .btn-mint, .btn-glass {
    white-space: normal;
    text-align: center;
    width: 100%;
    max-width: 100%;
    min-height: 48px;
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  .trigger-apk-download {
    width: 100% !important;
    max-width: 100% !important;
    min-height: 48px !important;
    white-space: normal !important;
    word-break: break-word !important;
    justify-content: center !important;
  }

  .hero-cta-group {
    width: 100%;
    max-width: 100%;
  }

  .hero-version-tag {
    flex-wrap: wrap;
    gap: 8px 12px;
    font-size: 0.78rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
}