/* ==========================================================================
   FINLEDGER — OFFICIAL PRODUCT WEBSITE STYLESHEET
   Aesthetic: Modern Premium Fintech / Neobank (Emerald & Slate)
   Mobile-First: Optimized for 320px, 360px, 375px, 390px, 414px, 430px -> Desktop
   ========================================================================== */

/* --- 1. CSS Custom Properties / Design Tokens --- */
:root {
  /* Brand Palette */
  --color-primary: #059669;        /* Emerald 600 */
  --color-primary-dark: #047857;   /* Emerald 700 */
  --color-primary-light: #10b981;  /* Emerald 500 */
  --color-primary-accent: #00d09c; /* FinLedger Emerald Brand */
  --color-primary-tint: #ecfdf5;   /* Emerald 50 */
  --color-primary-subtle: #d1fae5; /* Emerald 100 */

  /* Neutral Palette */
  --color-bg: #f8fafc;             /* Slate 50 */
  --color-bg-alt: #f1f5f9;         /* Slate 100 */
  --color-surface: #ffffff;        /* Pure White */
  --color-surface-hover: #fbfdff;
  --color-text-primary: #0f172a;   /* Slate 900 */
  --color-text-secondary: #334155; /* Slate 700 */
  --color-text-muted: #64748b;     /* Slate 500 */
  --color-text-subtle: #94a3b8;    /* Slate 400 */
  --color-border: #e2e8f0;         /* Slate 200 */
  --color-border-focus: #059669;

  /* Semantic Alerts */
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --color-danger-tint: #fef2f2;
  --color-warning: #d97706;
  --color-warning-tint: #fffbeb;
  --color-info: #0284c7;
  --color-info-tint: #f0f9ff;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;

  /* Elevation / Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.07), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Spacing */
  --container-max: 1200px;
  --header-height: 68px;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
  --transition-slow: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 2. CSS Reset & Base Rules --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  overflow-x: hidden;
  max-width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--color-primary-dark);
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* Global Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

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

@media (min-width: 1024px) {
  .container {
    padding: 0 32px;
  }
}

/* Section Common Spacing */
.section {
  padding: 60px 0;
  position: relative;
}

@media (min-width: 768px) {
  .section {
    padding: 88px 0;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 104px 0;
  }
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-white {
  background-color: var(--color-surface);
}

/* Section Header Typography */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px auto;
}

@media (min-width: 768px) {
  .section-header {
    margin-bottom: 56px;
  }
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-tint);
  border: 1px solid var(--color-primary-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.625rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: 14px;
}

.section-description {
  font-size: clamp(0.95rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- 3. Header & Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.98);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-logo img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  box-shadow: 0 2px 4px rgba(5, 150, 105, 0.2);
}

.brand-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  vertical-align: middle;
}

/* Desktop Navigation */
.desktop-nav {
  display: none;
}

@media (min-width: 900px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 28px;
  }

  .nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    padding: 6px 0;
    position: relative;
  }

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

  .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-header-cta {
  display: none;
}

@media (min-width: 640px) {
  .btn-header-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-primary);
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
  }

  .btn-header-cta:hover {
    background: var(--color-primary-dark);
    color: #ffffff;
    transform: translateY(-1px);
  }
}

/* Mobile Menu Toggle Button */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: transparent;
  padding: 10px;
  gap: 5px;
  transition: background var(--transition-fast);
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.menu-toggle:hover {
  background: var(--color-bg-alt);
}

.menu-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle.open .menu-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.open .menu-bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open .menu-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 900px) {
  .menu-toggle {
    display: none;
  }
}

/* Mobile Navigation Drawer */
.mobile-nav-backdrop {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  padding: 20px 24px 28px;
  z-index: 999;
  transform: translateY(-110%);
  transition: transform var(--transition-slow);
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  transform: translateY(0);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-nav-link:hover, .mobile-nav-link:focus {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.mobile-nav-cta {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- 4. Buttons & UI Elements --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 12px 22px;
  font-size: 0.9375rem;
  line-height: 1.25;
  transition: all var(--transition-fast);
  text-align: center;
  cursor: pointer;
  min-height: 48px; /* Touch target minimum */
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(5, 150, 105, 0.2);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #ffffff;
  box-shadow: 0 4px 8px rgba(5, 150, 105, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--color-bg-alt);
  border-color: #cbd5e1;
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.btn-full {
  width: 100%;
}

/* --- 5. Hero Section --- */
.hero-section {
  padding: 40px 0 60px 0;
  background: radial-gradient(circle at 50% 0%, #ecfdf5 0%, #f8fafc 70%);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 64px 0 88px 0;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
  }
}

.hero-content {
  text-align: left;
}

.hero-badge-wrap {
  margin-bottom: 16px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-primary-subtle);
  color: var(--color-primary-dark);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.25);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.4); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(5, 150, 105, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(5, 150, 105, 0); }
}

.hero-title {
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--color-text-primary);
  margin-bottom: 20px;
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.1875rem);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

@media (min-width: 480px) {
  .hero-cta-group {
    flex-direction: row;
    align-items: center;
  }
}

.hero-trust-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.trust-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Hero Visual / Mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.app-mockup-frame {
  width: 100%;
  max-width: 360px;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.12), 0 0 0 1px rgba(15, 23, 42, 0.04);
  overflow: hidden;
  padding: 16px;
  position: relative;
}

.mockup-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-bg-alt);
}

.mockup-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 14px 0;
}

.mockup-user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mockup-avatar {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-weight: 700;
}

/* Available Money Card in Mockup */
.mockup-balance-card {
  background: linear-gradient(135deg, #065f46 0%, #047857 50%, #059669 100%);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: 0 8px 16px -4px rgba(5, 150, 105, 0.35);
  margin-bottom: 14px;
}

.mockup-balance-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.9;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mockup-balance-amount {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 6px 0 10px;
}

.mockup-balance-footer {
  display: flex;
  justify-content: space-between;
  font-size: 0.6875rem;
  opacity: 0.85;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 8px;
}

.mockup-quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.mockup-quick-btn {
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 10px 4px;
  text-align: center;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.mockup-quick-btn svg {
  color: var(--color-primary);
}

.mockup-recent-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mockup-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

.mockup-item-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mockup-item-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.mockup-item-title {
  font-weight: 600;
  color: var(--color-text-primary);
}

.mockup-item-sub {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

.mockup-item-amount {
  font-weight: 700;
  text-align: right;
}

.mockup-item-amount.negative {
  color: var(--color-text-primary);
}

.mockup-item-amount.positive {
  color: var(--color-success);
}

/* Floating pill on mockup */
.mockup-floating-pill {
  position: absolute;
  bottom: 24px;
  right: -8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  animation: float 4s ease-in-out infinite;
}

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

/* --- 6. Product Introduction --- */
.intro-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

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

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

.intro-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.intro-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.intro-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.intro-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.intro-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- 7. Financial Engine / Accuracy Section --- */
.accuracy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .accuracy-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

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

.accuracy-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
}

.accuracy-formula-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  background: var(--color-bg-alt);
  color: var(--color-primary-dark);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  border-left: 3px solid var(--color-primary);
}

.accuracy-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.accuracy-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  flex-grow: 1;
}

.accuracy-principle-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-tint);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  align-self: flex-start;
}

/* Interactive Financial Calculator Widget */
.calc-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-md);
  margin-top: 40px;
}

@media (min-width: 768px) {
  .calc-widget {
    padding: 36px;
  }
}

.calc-widget-header {
  text-align: center;
  margin-bottom: 24px;
}

.calc-widget-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.calc-widget-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.calc-inputs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

@media (min-width: 600px) {
  .calc-inputs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .calc-inputs-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.calc-input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calc-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

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

.calc-currency-symbol {
  position: absolute;
  left: 12px;
  color: var(--color-text-muted);
  font-weight: 600;
}

.calc-input {
  width: 100%;
  padding: 10px 12px 10px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
  background: var(--color-bg);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.calc-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
}

.calc-results-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

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

.calc-result-box {
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.calc-result-box.spendable {
  background: var(--color-primary-tint);
  border: 1px solid var(--color-primary-subtle);
}

.calc-result-box.networth {
  background: var(--color-info-tint);
  border: 1px solid #bae6fd;
}

.calc-result-label {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.calc-result-box.spendable .calc-result-label {
  color: var(--color-primary-dark);
}

.calc-result-box.networth .calc-result-label {
  color: #0369a1;
}

.calc-result-val {
  font-size: 1.875rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.calc-result-box.spendable .calc-result-val {
  color: var(--color-primary-dark);
}

.calc-result-box.networth .calc-result-val {
  color: #0c4a6e;
}

.calc-result-note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- 8. Core Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

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

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

@media (min-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.feature-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.feature-icon-wrap {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  padding: 3px 8px;
  border-radius: 4px;
}

.feature-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.84375rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 16px;
  flex-grow: 1;
}

.feature-learn-btn {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
  transition: gap var(--transition-fast);
}

.feature-learn-btn:hover {
  color: var(--color-primary-dark);
  gap: 8px;
}

/* Feature Detail Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal-dialog {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  position: relative;
  padding: 28px;
}

.modal-backdrop.open .modal-dialog {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--color-border);
  color: var(--color-text-primary);
}

.modal-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-tint);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  line-height: 1.25;
}

.modal-body {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.modal-body h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 16px 0 6px;
}

.modal-body ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 12px;
}

.modal-body li {
  margin-bottom: 6px;
}

.modal-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
}

/* --- 9. Split Feature Deep Dive Showcase --- */
.split-showcase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 992px) {
  .split-showcase-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

.split-details h3 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--color-text-primary);
}

.split-details p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.split-features-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.split-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.split-feat-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.split-feat-text strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
}

.split-feat-text span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Split Visual Demo Card */
.split-demo-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.split-bill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed var(--color-border);
  padding-bottom: 16px;
  margin-bottom: 18px;
}

.split-bill-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.0625rem;
}

.split-bill-tag {
  background: var(--color-primary-tint);
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.split-math-box {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 18px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  text-align: center;
}

.split-stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.split-stat-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.split-stat-val.highlight {
  color: var(--color-primary-dark);
}

/* Interactive Split Simulator in Card */
.split-interactive-controls {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.split-control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  font-weight: 600;
}

.split-range-input {
  width: 50%;
  accent-color: var(--color-primary);
}

.split-members-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.split-member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

.split-member-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.split-member-tag {
  font-size: 0.6875rem;
  background: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  padding: 1px 6px;
  border-radius: 4px;
}

.split-member-share {
  font-weight: 700;
  color: var(--color-text-primary);
}

/* --- 10. Privacy & Security Architecture --- */
.privacy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .privacy-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

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

.privacy-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-normal);
}

.privacy-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.privacy-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.privacy-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.privacy-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- 11. How FinLedger Works (Timeline Flow) --- */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  position: relative;
}

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

@media (min-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
  }
}

.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  box-shadow: var(--shadow-xs);
  text-align: left;
  display: flex;
  flex-direction: column;
}

.step-number {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-primary);
  opacity: 0.9;
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.step-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.84375rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* --- 12. Why FinLedger (Comparison Pillars) --- */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

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

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

.comparison-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xs);
}

.comparison-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.comparison-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.comparison-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- 13. Current Status & Product Roadmap --- */
.status-banner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-md);
  margin-bottom: 48px;
}

.status-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
}

.status-version {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-version h3 {
  font-size: 1.25rem;
  font-weight: 800;
}

.status-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.status-pill {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-pill.success {
  background: #dcfce7;
  color: #15803d;
}

.status-pill.info {
  background: #e0f2fe;
  color: #0369a1;
}

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

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

@media (min-width: 992px) {
  .status-checklist-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.status-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.status-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Roadmap Columns */
.roadmap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

.roadmap-col {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
}

.roadmap-col-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.roadmap-col-title {
  font-size: 1.0625rem;
  font-weight: 800;
}

.roadmap-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.roadmap-badge.current {
  background: #dcfce7;
  color: #15803d;
}

.roadmap-badge.planned {
  background: #e0f2fe;
  color: #0369a1;
}

.roadmap-badge.future {
  background: #fef3c7;
  color: #b45309;
}

.roadmap-items-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.roadmap-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-bg);
  padding: 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
}

.roadmap-col:nth-child(1) .roadmap-item {
  border-left-color: var(--color-primary);
}

.roadmap-col:nth-child(2) .roadmap-item {
  border-left-color: #0284c7;
}

.roadmap-col:nth-child(3) .roadmap-item {
  border-left-color: #d97706;
}

.roadmap-item-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.roadmap-item-desc {
  font-size: 0.78125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --- 14. Technology Stack Section --- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

@media (min-width: 640px) {
  .tech-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 992px) {
  .tech-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
  }
}

.tech-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.tech-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-light);
}

.tech-card-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.tech-card-role {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- 15. Developer Section --- */
.dev-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

@media (min-width: 640px) {
  .dev-card {
    flex-direction: row;
    align-items: center;
    padding: 40px;
  }
}

.dev-avatar-wrap {
  width: 90px;
  height: 90px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 2rem;
  font-weight: 900;
  flex-shrink: 0;
  box-shadow: 0 8px 16px rgba(5, 150, 105, 0.25);
}

.dev-info {
  flex-grow: 1;
}

.dev-name {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.dev-role {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.dev-bio {
  font-size: 0.90625rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
}

.dev-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.dev-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.dev-btn:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* --- 16. FAQ Accordion --- */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.open {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  text-align: left;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  gap: 16px;
  background: transparent;
  transition: color var(--transition-fast);
}

.faq-question-btn:hover {
  color: var(--color-primary);
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-normal), color var(--transition-fast);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-answer-inner {
  padding: 0 20px 20px 20px;
  font-size: 0.90625rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  border-top: 1px solid var(--color-bg-alt);
  padding-top: 14px;
}

/* --- 17. Bottom CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, #065f46 0%, #047857 50%, #059669 100%);
  color: #ffffff;
  padding: 60px 0;
  text-align: center;
}

@media (min-width: 768px) {
  .cta-section {
    padding: 80px 0;
  }
}

.cta-wrap {
  max-width: 680px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.cta-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.125rem);
  opacity: 0.9;
  line-height: 1.6;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
}

@media (min-width: 480px) {
  .cta-buttons {
    flex-direction: row;
    align-items: center;
  }
}

.btn-white {
  background: #ffffff;
  color: var(--color-primary-dark);
  font-weight: 700;
}

.btn-white:hover {
  background: #f1f5f9;
  color: #047857;
  transform: translateY(-1px);
}

.btn-white-outline {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
  transform: translateY(-1px);
}

/* --- 18. Site Footer --- */
.site-footer {
  background: #0b1329;
  color: #94a3b8;
  padding: 56px 0 28px;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 44px;
}

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

@media (min-width: 992px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.25rem;
}

.footer-brand-desc {
  line-height: 1.6;
  max-width: 320px;
  font-size: 0.84375rem;
}

.footer-col-title {
  color: #ffffff;
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: #94a3b8;
  transition: color var(--transition-fast);
  font-size: 0.84375rem;
}

.footer-link:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: center;
  font-size: 0.78125rem;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    text-align: left;
  }
}

/* --- 19. Dedicated Privacy Page Styles --- */
.privacy-page-header {
  padding: 48px 0 32px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.privacy-article {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 0;
}

.privacy-section {
  margin-bottom: 40px;
}

.privacy-section h2 {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}

.privacy-section h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 16px 0 8px;
}

.privacy-section p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.privacy-section ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 14px;
}

.privacy-section li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 6px;
}

.privacy-meta-box {
  background: var(--color-primary-tint);
  border: 1px solid var(--color-primary-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 32px;
  font-size: 0.875rem;
  color: var(--color-primary-dark);
}

/* --- 20. Accessibility & Reduced Motion --- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}