/* ═══════════════════════════════════════════════════════════════════
   FINZBYTE - Modern Finance Calculator Website
   Design System: Premium Dark Finance Theme
   Colors: Deep navy, teal accents, gold highlights
   ═══════════════════════════════════════════════════════════════════ */

/* ─── CSS Custom Properties (Design Tokens) ─── */
:root {
  /* Primary Palette - Finance Trust Colors */
  --primary-900: #0a1628;
  /* Darkest navy */
  --primary-800: #0f2744;
  /* Deep navy background */
  --primary-700: #1a365d;
  /* Navy */
  --primary-600: #234e82;
  /* Medium navy */
  --primary-500: #2d6a9f;
  /* Primary blue */
  --primary-400: #4299e1;
  /* Bright blue */
  --primary-300: #63b3ed;
  /* Light blue */
  --primary-200: #90cdf4;
  /* Pale blue */
  --primary-100: #bee3f8;
  /* Very light blue */

  /* Accent Palette - Premium Gold/Teal */
  --accent-gold: #f6ad55;
  /* Warm gold */
  --accent-gold-light: #fbd38d;
  --accent-gold-dark: #dd6b20;
  --accent-teal: #38b2ac;
  /* Modern teal */
  --accent-teal-light: #4fd1c5;
  --accent-teal-dark: #2c7a7b;
  --accent-emerald: #10b981;
  /* Success green */

  /* Neutral Palette */
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: var(--primary-400);

  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: var(--neutral-50);
  --bg-tertiary: var(--neutral-100);
  --bg-dark: var(--primary-800);
  --bg-card: #ffffff;
  --bg-card-hover: var(--neutral-50);

  /* Text Colors */
  --text-primary: var(--neutral-500);
  --text-secondary: var(--neutral-900);
  --text-tertiary: var(--neutral-900);
  --text-inverse: #ffffff;
  --text-accent: #ffffff;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-500) 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent-teal) 0%, var(--accent-emerald) 100%);
  --gradient-gold: linear-gradient(135deg, var(--accent-gold-dark) 0%, var(--accent-gold) 100%);
  --gradient-hero: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 50%, var(--primary-600) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(66, 153, 225, 0.15);
  --shadow-glow-gold: 0 0 40px rgba(246, 173, 85, 0.2);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography Scale */
  --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 1.5vw, 0.875rem);
  --text-sm: clamp(0.875rem, 1.8vw, 1rem);
  --text-base: clamp(1rem, 2vw, 1.125rem);
  --text-lg: clamp(1.125rem, 2.2vw, 1.25rem);
  --text-xl: clamp(1.25rem, 2.5vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 3vw, 2rem);
  --text-3xl: clamp(1.875rem, 4vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 5vw, 3rem);
  --text-5xl: clamp(3rem, 6vw, 4rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ─── Base Reset & Typography ─── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1,
.h1 {
  font-size: var(--text-4xl);
  letter-spacing: -0.025em;
}

h2,
.h2 {
  font-size: var(--text-3xl);
  letter-spacing: -0.02em;
}

h3,
.h3 {
  font-size: var(--text-2xl);
}

h4,
.h4 {
  font-size: var(--text-xl);
}

h5,
.h5 {
  font-size: var(--text-lg);
}

h6,
.h6 {
  font-size: var(--text-base);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

.lead {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--text-secondary);
}

small,
.small {
  font-size: var(--text-sm);
}

a {
  color: var(--primary-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-400);
}

/* ─── Container ─── */
.container {
  max-width: 1280px !important;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* ─── Header & Navigation ─── */
header {
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--neutral-200);
}

.navbar {
  padding: var(--space-4) 0;
}

.navbar-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-2xl);
  display: flex;
  align-items: center;
  gap: 0;
}

.logo-text {
  font-size: 1.75rem;
  font-weight: 800;
  text-decoration: none !important;
  letter-spacing: -0.03em;
}

.logo-finz {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-byte {
  color: var(--accent-teal);
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary) !important;
  padding: var(--space-2) var(--space-4) !important;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-500) !important;
  background: var(--neutral-100);
}

.nav-link.active {
  color: var(--primary-500) !important;
}

/* CTA Button in Header */
.btn-primary {
  background: var(--gradient-primary);
  border: none;
  color: white !important;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  background: var(--gradient-primary);
  opacity: 0.95;
}

.btn-primary:active {
  transform: translateY(0);
}

/* ─── Hero Section ─── */
.hero-section {
  background: var(--gradient-hero);
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-section h1 {
  color: white;
  font-size: var(--text-5xl);
  margin-bottom: var(--space-6);
}

.hero-section .lead {
  color: var(--neutral-300);
  font-size: var(--text-xl);
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--gradient-glass);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--accent-gold-light);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-6);
  backdrop-filter: blur(10px);
}

/* ─── Cards - Modern Glass Design ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

/* Category Cards */
.category-card {
  background: linear-gradient(145deg, var(--bg-card) 0%, var(--neutral-50) 100%);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: translateY(-6px);
}

.category-card .icon-circle {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.category-card:hover .icon-circle {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.category-card .icon-circle svg {
  color: white;
  width: 28px;
  height: 28px;
}

.category-card .card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.category-card .card-text {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.5;
}

/* Subcategory Cards */
.subcategory-card {
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.subcategory-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.subcategory-card:hover::before {
  transform: scaleY(1);
}

.subcategory-card:hover {
  border-color: var(--accent-teal);
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
}

.subcategory-card .mini-icon-circle {
  width: 48px;
  height: 48px;
  background: var(--neutral-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.subcategory-card:hover .mini-icon-circle {
  background: var(--gradient-accent);
}

.subcategory-card:hover .mini-icon-circle svg {
  color: white;
}

/* Calculator Cards */
.calculator-card {
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.calculator-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--primary-100) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.calculator-card:hover::after {
  opacity: 1;
}

.calculator-card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.calculator-card .calc-icon-wrapper {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.calculator-card:hover .calc-icon-wrapper {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.calculator-card .calc-icon-wrapper svg {
  color: white;
  width: 24px;
  height: 24px;
}

/* ─── Buttons ─── */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-6);
  transition: all var(--transition-base);
  border: none;
}

.btn-secondary {
  background: var(--neutral-100);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--neutral-200);
}



.btn-outline-primary:hover {
  background: var(--primary-500);
  color: white;
}

/* Big Action Button */
.big-green-button {
  display: block;
  width: 100%;
  background: var(--gradient-primary) !important;
  color: white !important;
  text-decoration: none !important;
  border: none !important;
  border-radius: var(--radius-xl) !important;
  padding: var(--space-5) var(--space-6) !important;
  text-align: center !important;
  font-size: var(--text-base) !important;
  font-weight: 700 !important;
  box-shadow: var(--shadow-lg) !important;
  transition: all var(--transition-base) !important;
  position: relative;
  overflow: hidden;
}

.big-green-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.big-green-button:hover::before {
  left: 100%;
}

.big-green-button:hover {
  transform: translateY(-3px) !important;
  box-shadow: var(--shadow-xl), var(--shadow-glow) !important;
}

.big-green-button:active {
  transform: translateY(-1px) !important;
}

/* ─── Footer ─── */
footer {
  background: var(--primary-900);
  color: white;
  padding: var(--space-16) 0 var(--space-8);
  border-top: none;
}

footer h6 {
  color: white;
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

footer ul li {
  margin-bottom: var(--space-3);
}

footer a {
  color: var(--neutral-400);
  transition: color var(--transition-fast);
}

footer a:hover {
  color: var(--accent-teal-light) !important;
}

footer svg {
  color: var(--neutral-400);
  transition: all var(--transition-fast);
}

footer svg:hover {
  color: var(--accent-teal-light);
  transform: scale(1.2);
}

footer hr {
  border-color: var(--primary-700);
  opacity: 0.5;
}

footer .text-muted {
  color: var(--neutral-500) !important;
}

/* ─── Breadcrumbs ─── */
.breadcrumb {
  background: var(--neutral-50);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.breadcrumb-item a {
  color: var(--text-secondary);
  font-weight: 500;
}

.breadcrumb-item a:hover {
  color: var(--primary-500);
}

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

/* ─── Calculator Content Styles ─── */
.calculator-content {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--neutral-200);
}

.calculator-content h1 {
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.calculator-content h2 {
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--neutral-200);
}

.calculator-content h3 {
  font-size: var(--text-lg);
  color: var(--text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

/* Form Styles in Calculators */
.calculator-content input[type="text"],
.calculator-content input[type="number"],
.calculator-content input[type="email"],
.calculator-content select,
.calculator-content textarea {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-family: var(--font-body);
  transition: all var(--transition-fast);
  background: var(--bg-primary);
}

.calculator-content input:focus,
.calculator-content select:focus,
.calculator-content textarea:focus {
  outline: none;
  border-color: var(--primary-400);
  box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

.calculator-content button {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.calculator-content button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Result Display */
.calculator-result {
  background: var(--gradient-hero);
  color: white;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  margin: var(--space-6) 0;
  text-align: center;
}

.calculator-result .result-label {
  font-size: var(--text-sm);
  opacity: 0.8;
  margin-bottom: var(--space-2);
}

/* Fix for Input Group Alignment */
.calculator-content .input-group input[type="text"],
.calculator-content .input-group input[type="number"] {
  width: 1%;
  flex: 1 1 auto;
}

/* Dark Theme Input Group Text */
.bg-primary-dark {
  background-color: var(--primary-700) !important;
  color: white !important;
  border-color: var(--neutral-300);
}

.calculator-result .result-value {
  font-size: var(--text-4xl);
  font-weight: 800;
  font-family: var(--font-display);
  display: block;
  text-align: center;
}

/* ─── Theme Overrides ─── */
.text-primary {
  color: var(--primary-600) !important;
}

.bg-primary {
  background-color: var(--primary-300) !important;
}

.border-primary {
  border-color: var(--primary-500) !important;
}

.text-success {
  color: var(--accent-teal-dark) !important;
}

.bg-success {
  background-color: var(--accent-emerald) !important;
}

.btn-outline-primary {
  color: white;
  border-color: var(--primary-500);
}

.btn-outline-primary:hover {
  background-color: var(--primary-500);
  border-color: var(--primary-500);
}

/* ─── Badges ─── */
.badge {
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
}

.badge.bg-primary {
  background: var(--gradient-primary) !important;
}

.badge.bg-secondary {
  background: var(--neutral-200) !important;
  color: var(--text-secondary) !important;
}

.badge.bg-success {
  background: var(--accent-emerald) !important;
}

/* ─── Related Calculators ─── */
.related-list a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.related-list a:hover {
  background: var(--neutral-100);
  color: var(--primary-500);
  transform: translateX(4px);
}

.hover-bg-light:hover {
  background: var(--neutral-100) !important;
  border-radius: var(--radius-md);
}

/* ─── Sidebar ─── */
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.sidebar-card h5 {
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ─── Stats & Metrics ─── */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.stat-value {
  font-size: var(--text-4xl);
  font-weight: 800;
  font-family: var(--font-display);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* ─── Loading Animation ─── */
@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }

  100% {
    background-position: 1000px 0;
  }
}

.loading-skeleton {
  background: linear-gradient(90deg, var(--neutral-100) 25%, var(--neutral-200) 50%, var(--neutral-100) 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite linear;
  border-radius: var(--radius-md);
}

/* ─── Card Entrance Animation ─── */
@keyframes cardSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.category-card,
.subcategory-card,
.calculator-card {
  animation: cardSlideUp 0.6s ease-out backwards;
}

.category-card:nth-child(1) {
  animation-delay: 0.1s;
}

.category-card:nth-child(2) {
  animation-delay: 0.15s;
}

.category-card:nth-child(3) {
  animation-delay: 0.2s;
}

.category-card:nth-child(4) {
  animation-delay: 0.25s;
}

.category-card:nth-child(5) {
  animation-delay: 0.3s;
}

.category-card:nth-child(6) {
  animation-delay: 0.35s;
}

/* ─── Hover Effects ─── */
.hover-lift {
  transition: all var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

/* ─── Focus States (Accessibility) ─── */
.category-card:focus-within,
.subcategory-card:focus-within,
.calculator-card:focus-within,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary-400);
  outline-offset: 2px;
}

/* ─── Responsive Adjustments ─── */
@media (max-width: 768px) {
  :root {
    --space-8: 1.5rem;
    --space-10: 2rem;
    --space-12: 2.5rem;
    --space-16: 3rem;
    --space-20: 4rem;
  }

  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .hero-section {
    padding: var(--space-12) 0;
  }

  .category-card,
  .calculator-card {
    padding: var(--space-6);
  }

  .category-card .icon-circle {
    width: 56px;
    height: 56px;
  }

  .calculator-content {
    padding: var(--space-6);
    border-radius: var(--radius-xl);
  }

  footer {
    padding: var(--space-12) 0 var(--space-6);
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 1.5rem;
  }

  .big-green-button {
    padding: var(--space-4) var(--space-5) !important;
    font-size: var(--text-sm) !important;
  }

  .category-card:hover,
  .subcategory-card:hover,
  .calculator-card:hover {
    transform: translateY(-2px);
  }
}

/* ─── Print Styles ─── */
@media print {

  header,
  footer,
  .sidebar-card,
  .breadcrumb {
    display: none;
  }

  .calculator-content {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}

/* ─── Dark Mode Support (Future) ─── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: var(--neutral-900);
    --bg-secondary: var(--neutral-800);
    --bg-card: var(--neutral-800);
    --text-primary: var(--neutral-100);
    --text-secondary: var(--neutral-400);
  }
}

/* ─── Utility Classes ─── */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-gold {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-primary {
  background: var(--gradient-primary) !important;
}

.bg-gradient-accent {
  background: var(--gradient-accent) !important;
}

.bg-gradient-gold {
  background: var(--gradient-gold) !important;
}

.rounded-xl {
  border-radius: var(--radius-xl) !important;
}

.rounded-2xl {
  border-radius: var(--radius-2xl) !important;
}

.shadow-glow {
  box-shadow: var(--shadow-glow) !important;
}

/* ═══════════════════════════════════════════════════════════════════
   CATEGORY & SUBCATEGORY PAGE STYLES
   ═══════════════════════════════════════════════════════════════════ */

/* ─── Category Hero Section ─── */
.category-hero {
  padding: var(--space-12) 0;
}

.category-hero-icon {
  width: 96px;
  height: 96px;
  background: var(--gradient-primary);
  border-radius: var(--radius-2xl);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.category-hero-icon svg {
  color: white;
}

.category-hero-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.category-hero-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ─── Subcategory Hero Section ─── */
.subcategory-hero {
  padding: var(--space-8) 0;
  text-align: center;
}

.subcategory-hero-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.subcategory-hero-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ─── Modern Category Card (Homepage) ─── */
.category-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.category-card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: translateY(-6px);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.category-card:hover .category-card-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-lg);
}

.category-card-icon svg {
  color: white;
}

.category-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.category-card-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  flex-grow: 1;
  margin-bottom: var(--space-4);
}

.category-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--neutral-200);
}

.category-card-count {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary-500);
}

.category-card-arrow {
  width: 32px;
  height: 32px;
  background: var(--neutral-100);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.category-card:hover .category-card-arrow {
  background: var(--primary-500);
}

.category-card:hover .category-card-arrow svg {
  color: white;
}

.category-card-arrow svg {
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

/* ─── Modern Subcategory Card (Category Page) ─── */
.subcategory-card-modern {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.subcategory-card-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.subcategory-card-modern:hover {
  border-color: var(--accent-teal);
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
}

.subcategory-card-modern:hover::before {
  transform: scaleY(1);
}

.subcategory-card-content {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.subcategory-card-icon {
  width: 48px;
  height: 48px;
  background: var(--neutral-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.subcategory-card-modern:hover .subcategory-card-icon {
  background: var(--gradient-accent);
}

.subcategory-card-icon svg {
  color: var(--primary-500);
  transition: color var(--transition-base);
}

.subcategory-card-modern:hover .subcategory-card-icon svg {
  color: white;
}

.subcategory-card-text {
  display: flex;
  flex-direction: column;
}

.subcategory-card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.subcategory-card-count {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.subcategory-card-arrow {
  width: 36px;
  height: 36px;
  background: var(--neutral-100);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.subcategory-card-modern:hover .subcategory-card-arrow {
  background: var(--accent-teal);
}

.subcategory-card-arrow svg {
  color: var(--text-tertiary);
  transition: color var(--transition-base);
}

.subcategory-card-modern:hover .subcategory-card-arrow svg {
  color: white;
}

/* ─── Modern Calculator Card (Subcategory Page) ─── */
.calculator-card-modern {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  height: 100%;
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.calculator-card-modern::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, var(--primary-100) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.calculator-card-modern:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
}

.calculator-card-modern:hover::after {
  opacity: 1;
}

.calculator-card-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.calculator-card-modern:hover .calculator-card-icon {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.calculator-card-icon svg {
  color: white;
}

.calculator-card-body {
  flex-grow: 1;
}

.calculator-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.calculator-card-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

.calculator-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--neutral-200);
}

.calculator-card-cta {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary-500);
  transition: color var(--transition-base);
}

.calculator-card-modern:hover .calculator-card-cta {
  color: var(--primary-400);
}

.calculator-card-footer svg {
  color: var(--primary-500);
  transition: transform var(--transition-base);
}

.calculator-card-modern:hover .calculator-card-footer svg {
  transform: translateX(4px);
}

/* ─── Empty State ─── */
.empty-state {
  padding: var(--space-16) var(--space-4);
}

.empty-state-icon {
  opacity: 0.3;
}

/* ─── Responsive Card Adjustments ─── */
@media (max-width: 768px) {
  .category-hero {
    padding: var(--space-8) 0;
  }

  .category-hero-icon {
    width: 72px;
    height: 72px;
  }

  .category-hero-icon svg {
    width: 36px;
    height: 36px;
  }

  .category-hero-title {
    font-size: var(--text-3xl);
  }

  .category-card-icon {
    width: 48px;
    height: 48px;
  }

  .calculator-card-icon {
    width: 56px;
    height: 56px;
  }
}

@media (max-width: 480px) {
  .subcategory-card-modern {
    padding: var(--space-4);
  }

  .subcategory-card-icon {
    width: 40px;
    height: 40px;
  }

  .category-card,
  .calculator-card-modern {
    padding: var(--space-5);
  }

}

/* Override calculator wrapper max-width */
.calculator-wrapper {
  max-width: 100% !important;
}

/*  Accordion Fixes for Light Theme  */
.accordion-item {
  margin-bottom: 2rem !important;
  border: none !important;
  background: transparent !important;
}

/* Dedicated Simple Grey FAQ Class */
.faq-card-simple {
  background-color: var(--neutral-100) !important;
  border: 1px solid var(--neutral-200) !important;
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
}

.faq-card-simple .accordion-button {
  background-color: var(--neutral-100) !important;
  color: var(--primary-900) !important;
  box-shadow: none !important;
  font-weight: 600;
  padding: 1.5rem;
}

.faq-card-simple .accordion-button:not(.collapsed) {
  background-color: var(--neutral-200) !important;
  /* Slightly darker grey when open */
  color: var(--primary-900) !important;
}

.faq-card-simple .accordion-button::after {
  filter: grayscale(100%) opacity(0.6);
}

.faq-card-simple .accordion-body {
  background-color: var(--neutral-100) !important;
  color: var(--text-secondary) !important;
  padding: 0 1.5rem 1.5rem 1.5rem;
}


/*  Utility for Light Navy Background  */
.bg-primary-light {
  background-color: var(--primary-100) !important;
  color: var(--primary-900) !important;
}

/* ─── Modern Minimalist Buttons Overrides ─── */
.btn {
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  letter-spacing: 0.01em;
  text-transform: none !important;
}

/* Primary - Solid Navy */
.btn-primary {
  background: var(--primary-700) !important;
  border-color: var(--primary-700) !important;
  color: white !important;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn-primary:hover {
  background: var(--primary-800) !important;
  border-color: var(--primary-800) !important;
  transform: translateY(-1px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Outline - Start as "Hover" style (Navy Border/Text) */
.btn-outline-primary {
  background-color: white !important;
  border: 1px solid var(--primary-600) !important;
  color: white !important;
  color: white !important;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05) !important;
}

.btn-outline-primary:hover,
.btn-outline-primary.active {
  background-color: var(--neutral-50) !important;
  border-color: var(--primary-700) !important;
  color: var(--primary-700) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Link/Ghost - Clean text */
.btn-link {
  color: var(--text-secondary) !important;
  text-decoration: none !important;
  background: transparent !important;
  box-shadow: none !important;
}

.btn-link:hover {
  color: var(--primary-600) !important;
  text-decoration: underline !important;
}

/* ─── Global UI Fixes ─── */

/* Fix for checkboxes/switches overflowing when padding is removed from .form-check */
.form-check.p-0 .form-check-input,
.form-check.ps-0 .form-check-input {
  margin-left: 0 !important;
}

/* Ensure form-check with flex stays aligned and inputs don't shrink */
.form-check.d-flex {
  align-items: center;
}

.form-check.d-flex .form-check-input {
  flex-shrink: 0;
  margin-top: 0;
  /* Reset bootstrap default margin-top if using flex center */
}

#chart-container,
.chart-container,
#result-chart,
.result-chart {
  position: relative;
  height: 350px !important;
  overflow: hidden;
  animation: none;
}