/**
 * UPI QR Code Generator — Global Design System Tokens & Base Styles
 * /assets/css/global.css
 */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&display=swap');

:root {
  /* --- Brand & Palette (Modern Emerald Fintech) --- */
  --uqg-primary: #059669;
  --uqg-primary-hover: #047857;
  --uqg-primary-dark: #064e3b;
  --uqg-primary-light: #ecfdf5;
  --uqg-primary-border: #a7f3d0;
  --uqg-accent: #10b981;
  --uqg-accent-subtle: #d1fae5;

  /* --- Neutral & Surface Tokens --- */
  --uqg-bg: #f8fafc;
  --uqg-bg-alt: #f1f5f9;
  --uqg-surface: #ffffff;
  --uqg-surface-hover: #fcfdfe;
  --uqg-surface-elevated: #ffffff;

  /* --- Typography Colors --- */
  --uqg-text: #0f172a;
  --uqg-text-muted: #475569;
  --uqg-text-light: #94a3b8;
  --uqg-text-inverse: #ffffff;

  /* --- Border & Divider Tokens --- */
  --uqg-border: #e2e8f0;
  --uqg-border-subtle: #f1f5f9;
  --uqg-border-focus: #059669;

  /* --- Typography Scale & Stacks (IBM Plex Sans) --- */
  --uqg-font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --uqg-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --uqg-fs-xs: 0.75rem;   /* 12px */
  --uqg-fs-sm: 0.875rem;  /* 14px */
  --uqg-fs-base: 1rem;    /* 16px */
  --uqg-fs-lg: 1.125rem;  /* 18px */
  --uqg-fs-xl: 1.25rem;   /* 20px */
  --uqg-fs-2xl: 1.5rem;   /* 24px */
  --uqg-fs-3xl: 1.875rem; /* 30px */
  --uqg-fs-4xl: 2.25rem;  /* 36px */
  --uqg-fs-5xl: 3rem;     /* 48px */

  /* --- Spacing Scale --- */
  --uqg-space-1: 4px;
  --uqg-space-2: 8px;
  --uqg-space-3: 12px;
  --uqg-space-4: 16px;
  --uqg-space-5: 20px;
  --uqg-space-6: 24px;
  --uqg-space-8: 32px;
  --uqg-space-10: 40px;
  --uqg-space-12: 48px;
  --uqg-space-16: 64px;
  --uqg-space-20: 80px;

  /* --- Unified 1280px Layout Widths --- */
  --uqg-site-max-width: 1280px;
  --uqg-article-max-width: 880px;
  --uqg-tool-max-width: 1280px;
  --uqg-container-padding: 24px;

  /* --- Border Radius Scale --- */
  --uqg-radius-xs: 4px;
  --uqg-radius-sm: 8px;
  --uqg-radius-md: 12px;
  --uqg-radius-lg: 16px;
  --uqg-radius-xl: 24px;
  --uqg-radius-full: 9999px;

  /* --- Layered Shadows --- */
  --uqg-shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --uqg-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --uqg-shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --uqg-shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.08), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
  --uqg-shadow-card: 0 1px 3px rgba(15, 23, 42, 0.04), 0 8px 24px -4px rgba(15, 23, 42, 0.05);

  /* --- Focus Rings & Transitions --- */
  --uqg-focus-ring: 0 0 0 3px rgba(5, 150, 105, 0.25);
  --uqg-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --uqg-transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Base CSS Resets & Element Defaults
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--uqg-font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--uqg-text);
  background-color: var(--uqg-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--uqg-text);
  background-color: var(--uqg-bg);
  font-family: var(--uqg-font-sans);
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  position: relative;
}

p, h1, h2, h3, h4, h5, h6, span, a, li, td, th {
  overflow-wrap: break-word;
  word-wrap: break-word;
}

code, pre {
  word-break: break-all;
  overflow-wrap: anywhere;
}

button,
input,
optgroup,
select,
textarea {
  font-family: var(--uqg-font-sans);
  max-width: 100%;
}

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

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--uqg-focus-ring);
}

/* Skip link for accessibility */
.uqg-skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--uqg-text);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--uqg-radius-md);
  z-index: 1000;
  font-weight: 600;
  transition: top var(--uqg-transition-fast);
}

.uqg-skip-link:focus {
  top: 20px;
}

/* ==========================================================================
   Container & Layout System (1280px unified)
   ========================================================================== */
.uqg-container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--uqg-container-padding);
  padding-right: var(--uqg-container-padding);
}

.uqg-container-article {
  width: 100%;
  max-width: var(--uqg-article-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--uqg-container-padding);
  padding-right: var(--uqg-container-padding);
}

.uqg-container-tool {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--uqg-container-padding);
  padding-right: var(--uqg-container-padding);
}

/* ==========================================================================
   Shared Header & Navigation Styles
   ========================================================================== */
.uqg-site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--uqg-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.02);
}

.uqg-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.uqg-brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--uqg-text);
  letter-spacing: -0.02em;
}

.uqg-brand-logo span span {
  color: var(--uqg-primary);
}

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

.uqg-nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.uqg-nav-link {
  font-weight: 600;
  color: var(--uqg-text-muted);
  font-size: 0.95rem;
  padding: 6px 0;
  position: relative;
  transition: color var(--uqg-transition-fast);
}

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

.uqg-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--uqg-primary);
  color: #ffffff !important;
  padding: 9px 20px;
  border-radius: var(--uqg-radius-md);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 1px 2px rgba(5, 150, 105, 0.2);
  transition: background var(--uqg-transition-fast), transform var(--uqg-transition-fast), box-shadow var(--uqg-transition-fast);
}

.uqg-nav-cta:hover {
  background: var(--uqg-primary-hover);
  box-shadow: 0 4px 10px rgba(5, 150, 105, 0.3);
  transform: translateY(-1px);
}

.uqg-mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--uqg-border);
  border-radius: var(--uqg-radius-sm);
  padding: 8px;
  cursor: pointer;
  color: var(--uqg-text);
  transition: background var(--uqg-transition-fast);
}

.uqg-mobile-menu-btn:hover {
  background: var(--uqg-bg-alt);
}

/* ==========================================================================
   Shared Breadcrumbs & Page Heroes
   ========================================================================== */
.uqg-page-hero {
  background: linear-gradient(180deg, #ffffff 0%, var(--uqg-bg) 100%);
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--uqg-border);
  text-align: center;
}

.uqg-breadcrumbs {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--uqg-text-light);
  margin-bottom: 14px;
}

.uqg-breadcrumbs a {
  color: var(--uqg-text-muted);
}

.uqg-breadcrumbs a:hover {
  color: var(--uqg-primary);
}

.uqg-page-title {
  font-size: var(--uqg-fs-4xl);
  font-weight: 800;
  color: var(--uqg-text);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.uqg-page-subtitle {
  font-size: var(--uqg-fs-lg);
  color: var(--uqg-text-muted);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ==========================================================================
   Shared CTA Banner Component
   ========================================================================== */
.uqg-mid-cta {
  background: linear-gradient(135deg, #064e3b 0%, #047857 100%);
  color: #ffffff;
  border-radius: var(--uqg-radius-lg);
  padding: 48px 36px;
  text-align: center;
  margin-top: 56px;
  margin-bottom: 24px;
  box-shadow: var(--uqg-shadow-md);
  position: relative;
  overflow: hidden;
}

.uqg-mid-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

.uqg-mid-cta h2,
.uqg-mid-cta h3 {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.uqg-mid-cta p {
  color: #d1fae5;
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.uqg-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #34d399;
  color: #064e3b !important;
  padding: 13px 32px;
  border-radius: var(--uqg-radius-full);
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  transition: background var(--uqg-transition-fast), transform var(--uqg-transition-fast);
}

.uqg-cta-btn:hover {
  background: #6ee7b7;
  transform: translateY(-2px);
}

/* ==========================================================================
   Shared Footer Styles
   ========================================================================== */
.uqg-site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 68px 0 32px;
  margin-top: auto;
  border-top: 1px solid #1e293b;
}

.uqg-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1.4fr;
  gap: 48px;
  margin-bottom: 48px;
}

.uqg-footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.uqg-footer-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: #94a3b8;
  margin-bottom: 16px;
}

.uqg-footer-heading {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.uqg-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.uqg-footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: color var(--uqg-transition-fast);
}

.uqg-footer-links a:hover {
  color: #ffffff;
}

.uqg-footer-disclaimer {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  font-size: 0.825rem;
  line-height: 1.6;
  color: #64748b;
  text-align: center;
}

/* ==========================================================================
   Responsive Breakpoints & Universal Device Adaptation
   ========================================================================== */
@media (max-width: 1100px) {
  .uqg-footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 992px) {
  :root {
    --uqg-container-padding: 20px;
    --uqg-fs-5xl: 2.25rem;
    --uqg-fs-4xl: 1.85rem;
    --uqg-fs-3xl: 1.5rem;
  }

  .uqg-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .uqg-steps-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 16px !important;
  }
  .uqg-steps-grid::before {
    display: none !important;
  }

  .uqg-features-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 16px !important;
  }

  .uqg-tool-card {
    grid-template-columns: 1fr !important;
  }
  .uqg-tool-form-pane {
    border-right: none !important;
    border-bottom: 1px solid var(--uqg-border) !important;
    padding: 28px 24px !important;
  }
  .uqg-tool-preview-pane {
    padding: 32px 20px !important;
  }
}

@media (max-width: 768px) {
  :root {
    --uqg-container-padding: 16px;
    --uqg-fs-5xl: 1.85rem;
    --uqg-fs-4xl: 1.6rem;
    --uqg-fs-3xl: 1.35rem;
    --uqg-fs-2xl: 1.2rem;
  }

  .uqg-page-hero {
    padding: 36px 0 28px;
  }

  .uqg-page-title {
    font-size: 1.75rem;
  }

  .uqg-page-subtitle {
    font-size: 0.95rem;
  }

  .uqg-trust-strip {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .uqg-trust-item:nth-child(2) {
    border-right: none !important;
  }
  .uqg-trust-item:nth-child(1),
  .uqg-trust-item:nth-child(2) {
    border-bottom: 1px solid #edf2ef;
  }

  .uqg-features-grid {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  .uqg-steps-grid {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  .uqg-blog-grid {
    grid-template-columns: 1fr !important;
  }

  .uqg-table-wrapper,
  .uqg-table-box {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 18px 0;
    border-radius: 12px;
    display: block;
  }

  .uqg-table,
  .uqg-table-matrix,
  .uqg-hiw-table {
    width: 100%;
    min-width: 500px;
  }

  .uqg-mid-cta {
    padding: 32px 20px;
    margin-top: 36px;
  }

  .uqg-mid-cta h2,
  .uqg-mid-cta h3 {
    font-size: 1.45rem;
  }

  .uqg-footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 480px) {
  :root {
    --uqg-container-padding: 14px;
    --uqg-fs-base: 0.9375rem;
  }

  .uqg-home-hero {
    padding: 24px 0 36px !important;
  }

  .uqg-home-title {
    font-size: 1.65rem !important;
    line-height: 1.2 !important;
  }

  .uqg-home-subtitle {
    font-size: 0.9rem !important;
  }

  .uqg-tool-form-pane {
    padding: 20px 16px !important;
  }

  .uqg-tool-preview-pane {
    padding: 24px 14px !important;
  }

  .uqg-qr-stand-card {
    padding: 20px 16px 16px !important;
  }

  .uqg-qr-box {
    width: 180px !important;
    height: 180px !important;
  }

  .uqg-actions-grid {
    grid-template-columns: 1fr !important;
  }

  .uqg-trust-strip {
    grid-template-columns: 1fr !important;
  }
  .uqg-trust-item {
    border-right: none !important;
    border-bottom: 1px solid #edf2ef;
  }
  .uqg-trust-item:last-child {
    border-bottom: none;
  }

  .uqg-section {
    padding: 56px 0 !important;
  }

  .uqg-section-title {
    font-size: 1.6rem !important;
  }

  .uqg-step-card,
  .uqg-feature-card {
    padding: 20px 18px !important;
  }
}