/* =========================================== */
/* COMPLETE STYLE.CSS FOR US-TAX.US           */
/* All 4 Tax Calculators: Sales, Income,      */
/* Property, Car Tax                          */
/* =========================================== */

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

:root {
    /* 🇺🇸 USA Patriotic Colors */
    --usa-red: #B31942;
    --usa-blue: #0A3161;
    --usa-white: #FFFFFF;
    --light-blue: #3C3B6E;
    --accent: #FF6B35;
    --text: #333333;
    --light-gray: #f8f9fa;
    --border: #e0e0e0;
    --success: #4CAF50;
    --warning: #FF9800;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--light-gray);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--usa-blue);
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    font-size: 24px;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo p {
    font-size: 14px;
    opacity: 0.9;
}

.navbar {
    display: flex;
    gap: 20px;
}

.navbar a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    border-radius: 5px;
}

.navbar a:hover,
.navbar a.active {
    color: var(--usa-red);
    background: rgba(255,255,255,0.1);
}

/* Hero Section */
.hero {
    padding: 50px 0;
    background: linear-gradient(135deg, rgba(10, 49, 97, 0.05) 0%, rgba(255,255,255,1) 100%);
    text-align: center;
}

.hero h2 {
    color: var(--usa-blue);
    font-size: 36px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.tagline {
    color: #666;
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 30px;
}

/* Calculator Selector */
.calculator-selector {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin: 30px auto;
    max-width: 800px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.selector-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tab-btn {
    flex: 1;
    min-width: 150px;
    padding: 15px;
    background: #f8f9fa;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--usa-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.tab-btn:hover {
    background: var(--usa-blue);
    color: white;
    border-color: var(--usa-blue);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--usa-blue);
    color: white;
    border-color: var(--usa-blue);
    box-shadow: 0 4px 10px rgba(10, 49, 97, 0.3);
}

/* Calculator Sections */
.calculator-section {
    display: none;
    padding: 50px 0;
    animation: fadeIn 0.5s ease;
}

.calculator-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.calculator-section h3 {
    color: var(--usa-blue);
    font-size: 28px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.calculator-section > p {
    color: #666;
    margin-bottom: 30px;
    font-size: 16px;
}

/* Calculator Card */
.calculator-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border: 2px solid var(--border);
    max-width: 600px;
    margin: 0 auto;
}

.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--usa-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    transition: border 0.3s;
    background: white;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--usa-blue);
    box-shadow: 0 0 0 3px rgba(10, 49, 97, 0.1);
}

.calculate-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--usa-red) 0%, var(--usa-blue) 100%);
    color: white;
    border: none;
    padding: 18px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin: 25px 0;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(179, 25, 66, 0.3);
}

/* Results */
.results {
    margin-top: 30px;
    padding: 25px;
    background: #e8f5e9;
    border-radius: 10px;
    border-left: 5px solid var(--success);
    display: none;
}

.results h4 {
    color: #2e7d32;
    margin-bottom: 20px;
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #c8e6c9;
}

.result-row:last-child {
    border-bottom: none;
}

.result-total {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    font-size: 22px;
    font-weight: bold;
    color: var(--usa-blue);
    border-top: 2px solid var(--usa-blue);
    margin-top: 10px;
}

/* Ad Sections */
.ad-section {
    padding: 40px 0;
}

.ad-container {
    background: white;
    border: 2px dashed var(--border);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.ad-label {
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--usa-blue);
    color: white;
    padding: 3px 10px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: bold;
}

.ad-placeholder {
    min-height: 90px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #666;
}

/* Info Section */
.info-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(10, 49, 97, 0.05) 0%, rgba(255,255,255,1) 100%);
}

.info-section h3 {
    color: var(--usa-blue);
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.info-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border-top: 4px solid var(--usa-blue);
    transition: transform 0.3s;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-card h4 {
    color: var(--usa-blue);
    margin-bottom: 15px;
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-card p {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--usa-blue);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-section a {
    display: block;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

.footer-bottom i {
    margin: 0 5px;
}

/* Responsive */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .navbar {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero h2 {
        font-size: 28px;
        flex-direction: column;
        gap: 10px;
    }
    
    .selector-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
    }
    
    .calculator-card {
        padding: 20px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h2 {
        font-size: 24px;
    }
    
    .calculator-section h3 {
        font-size: 24px;
    }
    
    .calculate-btn {
        padding: 15px;
        font-size: 16px;
    }
    
    .results {
        padding: 20px;
    }
}

/* Animation for calculator switching */
.tab-content {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Loading animation for buttons */
.calculate-btn.loading {
    position: relative;
    color: transparent;
}

.calculate-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Tooltip styles */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]:hover::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--usa-blue);
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    font-size: 14px;
    white-space: nowrap;
    z-index: 1000;
}

/* Print styles */
@media print {
    .header, .footer, .ad-section, .calculate-btn {
        display: none !important;
    }
    
    .calculator-card {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .results {
        display: block !important;
    }
}

/* Accessibility improvements */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
select:focus {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --usa-red: #9B0000;
        --usa-blue: #00008B;
        --text: #000000;
    }
    
    .results {
        border-left: 5px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}