/* ==========================================================================
   Credit Range - Premium White Modern Style Architecture
   Aesthetics: Ultra-Clean White Background, Bold Typography, Fluid Bento Grid,
               Refined Glassmorphism Cards & Micro Interactions.
   ========================================================================== */

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

:root {
  /* Color Tokens */
  --bg-main: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-dark: #0F172A;
  --bg-dark-hover: #1E293B;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-light: #F8FAFC;

  --accent-cyan: #0EA5E9;
  --accent-blue: #2563EB;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;

  --border-light: #E2E8F0;
  --border-hover: #CBD5E1;
  --border-accent: rgba(14, 165, 233, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 8px 16px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 30px -6px rgba(15, 23, 42, 0.08);
  --shadow-xl: 0 32px 64px -12px rgba(15, 23, 42, 0.12);

  /* Layout Standards */
  --max-width: 1240px;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;

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

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-main);
  overflow-x: hidden;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Typography Helpers */
.font-heading {
  font-family: var(--font-heading);
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 100px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 100px 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: var(--transition-fast);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 100px;
  background-color: var(--bg-dark);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  transition: var(--transition-fast);
  border: 1px solid var(--bg-dark);
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--bg-dark-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 100px;
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--border-light);
  transition: var(--transition-fast);
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: #FFFFFF;
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding-top: 160px;
  padding-bottom: 100px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.03) 0%, transparent 50%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.75rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.hero-desc {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.hero-subdesc {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--accent-cyan);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

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

.hero-visual img {
  max-width: 480px;
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(15, 23, 42, 0.12));
  transition: var(--transition-smooth);
}

.hero-visual:hover img {
  transform: translateY(-8px) scale(1.02);
}

/* Feature Sections & Bento Grid */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 18px;
  line-height: 1.2;
}

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

/* Understand Section Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
}

.bento-card.span-2 {
  grid-column: span 2;
}

.bento-card.dark-theme {
  background: var(--bg-dark);
  color: var(--text-light);
  border-color: var(--bg-dark);
}

.bento-card.dark-theme .card-desc {
  color: var(--text-muted);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 24px;
  color: var(--accent-cyan);
}

.dark-theme .card-icon {
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: inherit;
}

.card-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.list-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.list-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
}

.list-bullet {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #ECFDF5;
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.disclaimer-box {
  margin-top: 40px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 24px;
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Select Amount Section */
.select-amount-banner {
  background: linear-gradient(180deg, var(--bg-subtle) 0%, #FFFFFF 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 60px;
  box-shadow: var(--shadow-md);
  margin-top: 40px;
}

.select-amount-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

/* Credit Line Terms Cards Section */
.terms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.term-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition-smooth);
}

.term-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-md);
}

.term-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.term-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Cost Illustration & Interactive Calculator */
.calculator-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 50px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.calc-control-group {
  margin-bottom: 30px;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.calc-label {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.calc-value-display {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--border-light);
  outline: none;
  -webkit-appearance: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-dark);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform 0.1s ease;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.calc-result-box {
  background: var(--bg-dark);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 36px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.95rem;
}

.result-row.total {
  border-bottom: none;
  padding-top: 24px;
  margin-top: 10px;

}

.result-row.total .calc-result-label {
  font-size: 1.15rem;
  font-weight: 700;
}

.result-row.total .calc-result-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-emerald);
}

/* Account Requirements Grid */
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.req-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition-fast);
}

.req-card:hover {
  background: #FFFFFF;
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.req-number {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.req-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

/* Customer Support & Footer Section */
.footer {
  background: var(--bg-dark);
  color: #FFFFFF;
  padding: 80px 0 40px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.footer-support-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-top: 24px;
}

.support-link {
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
  .hero-grid,
  .select-amount-grid,
  .calculator-card {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .bento-card.span-2 {
    grid-column: span 1;
  }

  .hero-title {
    font-size: 3rem;
  }

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

@media (max-width: 640px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .calculator-card,
  .select-amount-banner {
    padding: 24px;
  }

  .nav-links {
    display: none;
  }
}