/*
Theme Name: TaxPro 2026
Theme URI: https://taxpro2026.com
Author: Financial Web Solutions
Author URI: https://taxpro2026.com
Description: Premium SEO-first WordPress theme for Tax Calculators, Financial Calculators, and Personal Finance tools. Built for Google SEO 2026 with Core Web Vitals optimization, Schema-rich architecture, E-E-A-T compliance, and AdSense integration. Features include calculator templates, mega menu, author profiles, FAQ schema, breadcrumbs, and mobile-first responsive design.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: taxpro2026
Tags: calculator, finance, tax, seo, schema, adsense, professional, responsive, accessibility-ready, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================
   CSS RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Scheme - Professional Finance Brand */
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3385d6;
    --secondary-color: #00cc88;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #767676;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #e9ecef;
    --border-color: #dee2e6;
    --success: #28a745;
    --warning: #ffc107;
    --error: #dc3545;
    --info: #17a2b8;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    --font-mono: 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-wide: 1400px;

    --header-height: 70px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}


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

a:hover,
a:focus {
    color: var(--primary-dark);
    text-decoration: underline;
}

strong, b {
    font-weight: 600;
}

em, i {
    font-style: italic;
}

/* ============================================
   LAYOUT CONTAINERS
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-wide {
    max-width: var(--container-wide);
}

.container-fluid {
    max-width: 100%;
}

/* ============================================
   HEADER - STICKY NAVIGATION
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    width: 100%;
    transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.site-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.site-logo img {
    max-height: 45px;
    width: auto;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

/* Navigation Menu */
.main-navigation {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    height: 100%;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-sm);
    margin: 0;
    height: 100%;
    align-items: center;
}

.nav-menu > li {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-menu > li > a {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    color: var(--text-primary);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast);
    height: 100%;
}

.nav-menu > li > a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* CTA Button in Header */
.header-cta {
    padding: 0.65rem 1.5rem;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
}

.header-cta:hover {
    background: var(--primary-dark);
    color: var(--bg-white);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Modern Dropdown Menu - Enhanced */
.nav-menu > li.menu-item-has-children {
    position: relative;
}

.nav-menu > li.menu-item-has-children > .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    min-width: 300px;
    padding: var(--spacing-xl);
    display: none;
    z-index: 99999;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.nav-menu > li.menu-item-has-children:hover > .sub-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.nav-menu .sub-menu {
    list-style: none;
    margin: 0;
}

.nav-menu .sub-menu li {
    margin: 0;
    margin-bottom: var(--spacing-sm);
    transform: translateX(-10px);
    opacity: 0;
    animation: slideInLeft 0.3s ease forwards;
}

.nav-menu .sub-menu li:nth-child(1) { animation-delay: 0.1s; }
.nav-menu .sub-menu li:nth-child(2) { animation-delay: 0.15s; }
.nav-menu .sub-menu li:nth-child(3) { animation-delay: 0.2s; }
.nav-menu .sub-menu li:nth-child(4) { animation-delay: 0.25s; }

@keyframes slideInLeft {
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.nav-menu .sub-menu li:last-child {
    margin-bottom: 0;
}

.nav-menu .sub-menu a {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all 0.25s cubic-bezier(0.4, 0.0, 0.2, 1);
    font-size: 1rem;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, transparent 0%, transparent 100%);
}

.nav-menu .sub-menu a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    transition: all 0.3s ease;
    z-index: -1;
}

.nav-menu .sub-menu a:hover {
    color: var(--bg-white);
    border-color: var(--primary-color);
    transform: translateX(6px) scale(1.02);
    text-decoration: none;
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.25);
}

.nav-menu .sub-menu a:hover::before {
    left: 0;
}

.nav-menu .sub-menu a:active {
    transform: translateX(4px) scale(0.98);
}

/* Calculator Categories Dropdown in Header */
.calculator-categories-dropdown {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.categories-toggle {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-light);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.categories-toggle:hover {
    background: var(--bg-gray);
}

.categories-dropdown-menu {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    min-width: 280px;
    padding: var(--spacing-md);
    display: none;
    z-index: 99999;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.categories-dropdown-menu.show {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.categories-dropdown-menu ul {
    list-style: none;
    margin: 0;
}

.categories-dropdown-menu li {
    margin-bottom: var(--spacing-xs);
}

.categories-dropdown-menu a {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.categories-dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
    text-decoration: none;
}

/* Header Search Box */
.header-search-box {
    display: none;
    background: var(--bg-white);
    border-bottom: 2px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 70px;
    z-index: 999;
    box-shadow: var(--shadow-md);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header-search-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
}

.header-search-form {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.search-input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0 var(--spacing-md);
    transition: all var(--transition-fast);
}

.search-input-wrapper:focus-within {
    border-color: var(--primary-color);
    background: var(--bg-white);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.search-input-wrapper .search-icon {
    color: var(--text-muted);
    flex-shrink: 0;
    margin-right: var(--spacing-sm);
}

.search-input {
    flex: 1;
    padding: 1rem;
    border: none;
    background: transparent;
    font-size: 1.125rem;
    color: var(--text-primary);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.close-search {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.close-search:hover {
    background: var(--bg-gray);
    color: var(--error);
}

.search-submit {
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.header-search-toggle {
    padding: 0.7rem 1.1rem;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    height: 48px;
    position: relative;
    overflow: hidden;
}

.header-search-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.header-search-toggle:hover {
    color: var(--bg-white);
    border-color: var(--primary-color);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.3);
}

.header-search-toggle:hover::before {
    opacity: 1;
}

.header-search-toggle:active {
    transform: translateY(-1px) scale(1.02);
}

/* Live Search Results */
.live-search-results {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.search-section {
    margin-bottom: var(--spacing-lg);
}

.search-section:last-child {
    margin-bottom: 0;
}

.search-section h4 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
}

.search-calculators {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.search-calc-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.search-calc-item:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.calc-icon {
    font-size: 1.2rem;
}

.calc-text {
    font-weight: 500;
}

.search-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.search-links a {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-gray);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.search-links a:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    text-decoration: none;
}

/* Header Ad Container - Removed */

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}


/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
    background: var(--bg-light);
    padding: var(--spacing-md) 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: var(--spacing-sm);
    margin: 0;
}

.breadcrumbs li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.breadcrumbs li:not(:last-child)::after {
    content: '›';
    color: var(--text-muted);
}

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

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

/* ============================================
   HERO SECTION - HOMEPAGE
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, #0066cc 0%, #004c99 100%);
    color: var(--bg-white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.hero-content h1 {
    color: var(--bg-white);
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.hero-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

/* Hero Search Bar */
.hero-search {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.hero-search input[type="search"] {
    width: 100%;
    padding: 1rem 3.5rem 1rem 1.25rem;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.hero-search button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.65rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
}

/* ============================================
   CALCULATOR GRID - FEATURED CALCULATORS
   ============================================ */
.calculator-grid-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.calculator-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.calculator-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-light);
    color: var(--bg-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.calculator-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.calculator-card p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.calculator-card .card-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}


/* ============================================
   MODERN CALCULATOR LAYOUT - SIDE BY SIDE
   ============================================ */
.calculator-tool-modern {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 102, 204, 0.1);
    border: 1px solid rgba(0, 102, 204, 0.1);
    margin-bottom: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.calc-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    padding: var(--spacing-3xl) var(--spacing-2xl) var(--spacing-2xl);
    text-align: center;
}

.calc-header h1 {
    color: var(--bg-white);
    margin-bottom: var(--spacing-sm);
    font-size: 2rem;
}

.calc-header p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    font-size: 1.1rem;
}

.calc-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 500px;
}

.calc-form-section {
    padding: var(--spacing-3xl) var(--spacing-2xl) var(--spacing-2xl);
    background: var(--bg-white);
    border-right: 1px solid var(--border-color);
}

.calc-results-section {
    padding: var(--spacing-3xl) var(--spacing-2xl) var(--spacing-2xl);
    background: linear-gradient(135deg, #f8fafe 0%, #e8f4fd 100%);
    display: flex;
    flex-direction: column;
}

.results-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.results-header h3 {
    color: var(--primary-dark);
    font-size: 1.5rem;
    margin: 0;
}

/* Modern Form Styles */
.calculator-form-modern {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    height: 100%;
}

.form-group-modern {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group-modern label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group-modern input,
.form-group-modern select {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: all var(--transition-base);
    background: var(--bg-white);
}

.form-group-modern input:focus,
.form-group-modern select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
    transform: translateY(-1px);
}

.calculate-button-modern {
    padding: 1.2rem 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: auto;
    box-shadow: 0 4px 16px rgba(0, 102, 204, 0.3);
}

.calculate-button-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.4);
}

.calculate-button-modern:active {
    transform: translateY(0);
}

/* 3D Circular Progress Indicator */
.tax-rate-circle {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
}

.circle-progress {
    position: relative;
    width: 120px;
    height: 120px;
}

.circle-fill {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        var(--primary-color) 0deg,
        var(--primary-color) calc(var(--percentage, 0) * 3.6deg),
        #e9ecef calc(var(--percentage, 0) * 3.6deg),
        #e9ecef 360deg
    );
    box-shadow: 
        0 0 20px rgba(0, 102, 204, 0.3),
        inset 0 0 20px rgba(0, 0, 0, 0.1);
    transition: all 1s ease-in-out;
}

.circle-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: var(--bg-white);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.percentage {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
}

.label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* Modern Results Grid */
.calculator-results-modern {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    flex: 1;
}

.result-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.result-card.highlight {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    grid-column: 1 / -1;
    box-shadow: 0 4px 20px rgba(0, 102, 204, 0.3);
}

.result-card.highlight .result-label,
.result-card.highlight .result-value {
    color: var(--bg-white);
}

.result-icon {
    font-size: 2rem;
    opacity: 0.8;
}

.result-card.highlight .result-icon {
    opacity: 1;
}

.result-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}

.result-card .result-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin: 0;
}

.result-card .result-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .calc-container {
        grid-template-columns: 1fr;
    }
    
    .calc-form-section {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .result-card.highlight {
        grid-column: 1;
    }
    
    .circle-progress {
        width: 100px;
        height: 100px;
    }
    
    .circle-content {
        width: 70px;
        height: 70px;
    }
    
    .percentage {
        font-size: 1.2rem;
    }
}

/* ============================================
   CONTENT SECTIONS
   ============================================ */
.content-section {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.content-section h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--bg-gray);
}

.content-section h3 {
    font-size: 1.5rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.content-section ul,
.content-section ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.content-section li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

/* Formula Section */
.formula-section {
    background: var(--bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    margin: var(--spacing-xl) 0;
}

.formula-code {
    font-family: var(--font-mono);
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary-color);
    font-size: 1.125rem;
    margin-top: var(--spacing-md);
}


/* ============================================
   TABLE OF CONTENTS
   ============================================ */
.table-of-contents {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.table-of-contents h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.toc-list {
    list-style: none;
    margin: 0;
}

.toc-list li {
    margin-bottom: var(--spacing-sm);
}

.toc-list a {
    color: var(--text-primary);
    padding: var(--spacing-sm) 0;
    display: block;
}

.toc-list a:hover {
    color: var(--primary-color);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-section {
    margin: var(--spacing-2xl) 0;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    padding: var(--spacing-lg);
    font-weight: 600;
    font-size: 1.125rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-light);
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-gray);
}

.faq-answer {
    padding: var(--spacing-lg);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}



/* Ad Placement Slots - In-Content Only */
.ad-slot {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) auto;
    text-align: center;
}

.ad-slot ins {
    margin: 0 !important;
}



.ad-slot.in-content-ad {
    margin: var(--spacing-2xl) auto;
    max-width: 336px;
    min-height: 280px;
}

/* Sticky Mobile Ad - Removed */

.sticky-mobile-ad-close {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--text-muted);
    color: var(--bg-white);
    border: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    cursor: pointer;
    border-radius: 0 0 0 var(--radius-sm);
}

/* ============================================
   AUTHOR BOX
   ============================================ */
.author-box {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
    display: flex;
    gap: var(--spacing-lg);
}

.author-avatar {
    flex-shrink: 0;
}

.author-avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    margin-bottom: var(--spacing-sm);
}

.author-bio {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
}

.author-social {
    display: flex;
    gap: var(--spacing-md);
}

.author-social a {
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.author-social a:hover {
    color: var(--primary-color);
}


/* ============================================
   BLOG POSTS
   ============================================ */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    margin: var(--spacing-2xl) 0;
}

.post-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.post-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-content {
    padding: var(--spacing-xl);
}

.post-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.post-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.post-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.post-title a:hover {
    color: var(--primary-color);
}

.post-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   FOOTER - MINIMAL DESIGN
   ============================================ */
.site-footer-minimal {
    background: var(--text-primary);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-3xl);
    border-top: 3px solid var(--primary-color);
}

.footer-minimal-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-links-minimal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links-minimal a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.footer-links-minimal a:hover {
    color: var(--bg-white);
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
    transform: translateY(-1px);
}

.footer-copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

/* Mobile Footer */
@media (max-width: 768px) {
    .footer-minimal-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-links-minimal {
        order: 2;
    }
    
    .footer-copyright {
        order: 1;
    }
}




/* ============================================
   EXAMPLES SECTION
   ============================================ */
.examples-section {
    margin: var(--spacing-2xl) 0;
}

.example-box {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.example-box h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   RELATED CALCULATORS
   ============================================ */
.related-calculators {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.related-item {
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.related-item:hover {
    background: var(--bg-gray);
}

.related-item a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    font-weight: 500;
}

/* ============================================
   SOCIAL SHARING
   ============================================ */
.social-share {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin: var(--spacing-xl) 0;
}

.social-share-label {
    font-weight: 600;
    color: var(--text-primary);
}

.share-button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-button:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    border-color: var(--primary-color);
}

/* ============================================
   UPDATE HISTORY & META INFO
   ============================================ */
.article-meta {
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.meta-label {
    font-weight: 600;
}

/* ============================================
   REFERENCES & CITATIONS
   ============================================ */
.references-section {
    background: var(--bg-light);
    border-left: 4px solid var(--info);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
    border-radius: var(--radius-md);
}

.references-section h3 {
    margin-bottom: var(--spacing-md);
}

.references-list {
    list-style: decimal;
    margin-left: var(--spacing-xl);
}

.references-list li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.references-list a {
    color: var(--primary-color);
}

/* ============================================
   EDITORIAL REVIEW BLOCK
   ============================================ */
.editorial-review {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.review-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.review-badge {
    background: var(--success);
    color: var(--bg-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}


/* ============================================
   TRENDING SECTION
   ============================================ */
.trending-section {
    background: var(--bg-light);
    padding: var(--spacing-3xl) 0;
}

.trending-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.trending-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

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

.trending-card h4 {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   TAX GUIDES SECTION
   ============================================ */
.tax-guides-section {
    padding: var(--spacing-3xl) 0;
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.guide-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-fast);
}

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

.guide-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.guide-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.guide-card p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.guide-link {
    color: var(--primary-color);
    font-weight: 600;
}

/* ============================================
   EXPERTISE SECTION
   ============================================ */
.expertise-section {
    background: var(--bg-light);
    padding: var(--spacing-3xl) 0;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.expertise-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.expertise-card:hover {
    box-shadow: var(--shadow-md);
}

.expertise-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.expertise-card h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.expertise-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}



/* ============================================
   FAQ HOMEPAGE SECTION
   ============================================ */
.faq-homepage-section {
    padding: var(--spacing-3xl) 0;
}
@media (max-width: 992px) {
    :root {
        --spacing-3xl: 3rem;
        --spacing-2xl: 2rem;
    }
    
    .calculator-page {
        grid-template-columns: 1fr;
    }
    
    .header-container {
        flex-wrap: wrap;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-navigation {
        display: none;
        width: 100%;
        flex-direction: column;
        padding: var(--spacing-md) 0;
    }
    
    .main-navigation.mobile-open {
        display: flex;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-menu > li {
        width: 100%;
    }
    
    .calculator-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .calculator-tool {
        padding: var(--spacing-lg);
    }
    
    .result-value {
        font-size: 2rem;
    }
    
    .author-box {
        flex-direction: column;
    }
    
    .footer-widgets {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-search button {
        position: static;
        transform: none;
        width: 100%;
        margin-top: var(--spacing-sm);
    }
    

}

/* ============================================
   ACCESSIBILITY & FOCUS STATES
   ============================================ */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: var(--bg-white);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .site-header,
    .social-share,
    .related-calculators,
    .ad-slot,
    .site-footer {
        display: none;
    }
    
    .calculator-page-full {
        max-width: 100%;
    }
    
    a {
        text-decoration: underline;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}