/* ===== CSS Variables - Professional Design ===== */
:root {
    /* Colors - Professional Palette */
    --primary: #0066CC;
    --primary-hover: #0052A3;
    --primary-light: #E6F2FF;
    --secondary: #00A86B;
    --danger: #DC3545;
    
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E9ECEF;
    
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-tertiary: #6C757D;
    
    --border: #DEE2E6;
    --border-light: #E9ECEF;
    --divider: #E9ECEF;
    
    /* Shadows - Subtle */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
    
    /* Spacing - Standardized Convention */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Section Spacing - Standardized Convention */
    /* Tất cả các section (hero, info, calculator, blog) đều dùng convention này */
    --section-margin-top: var(--spacing-xl);      /* Margin top cho section đầu tiên sau header */
    --section-margin-bottom: var(--spacing-xl);    /* Margin bottom giữa các section */
    --section-padding: var(--spacing-2xl);         /* Padding bên trong section */
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #1A1A1A;
    --bg-secondary: #242424;
    --bg-tertiary: #2D2D2D;
    
    --text-primary: #FFFFFF;
    --text-secondary: #D4D4D4;
    --text-tertiary: #A0A0A0;
    
    --border: #3A3A3A;
    --border-light: #2D2D2D;
    --divider: #2D2D2D;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(180deg, #F0F4F8 0%, #FFFFFF 50%, #F8FAFC 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.2s ease, color 0.2s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

[data-theme="dark"] body {
    background: linear-gradient(180deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Main Layout with Sidebar ===== */
.main-layout {
    display: grid;
    grid-template-columns: 1fr; /* Single column when ad is hidden */
    gap: var(--spacing-xl);
    align-items: start;
}

/* When ad sidebar is visible, use 2 columns - Uncomment when ready to show ads */
/* .main-layout {
    grid-template-columns: 1fr 300px;
} */

.main-content {
    min-width: 0; /* Prevent overflow */
}

.ad-sidebar {
    position: sticky;
    top: 80px; /* Below header */
    height: fit-content;
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    
    .ad-sidebar {
        position: static;
        order: -1; /* Show ad above content on mobile */
    }
}

/* ===== Header ===== */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 1px solid rgba(222, 226, 230, 0.5);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.8);
    border-bottom-color: rgba(58, 58, 58, 0.5);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

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

.nav-link {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.nav-link.active {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-light);
}

@media (max-width: 768px) {
    .header-nav {
        gap: var(--spacing-xs);
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.875rem;
    }
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: 1.125rem;
    transition: var(--transition);
    line-height: 1;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
}

/* ===== Ad Banner ===== */
.ad-banner-sidebar {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 80px;
}

.ad-banner-sidebar ins {
    display: block;
    min-height: 250px;
}

.ad-placeholder {
    color: var(--text-tertiary);
    font-size: 0.75rem;
}

/* ===== Currency Radio Buttons ===== */
.currency-radio-group {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.exchange-rate-inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.exchange-rate-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.exchange-rate-input {
    width: 90px;
    padding: 0.5rem var(--spacing-sm);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-align: right;
    transition: var(--transition);
    font-family: inherit;
    min-height: 40px;
    box-sizing: border-box;
    font-weight: 500;
}

.exchange-rate-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.exchange-rate-unit {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    transition: var(--transition);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.radio-option:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.radio-option input[type="radio"] {
    margin: 0;
    cursor: pointer;
    accent-color: var(--primary);
}

.radio-option input[type="radio"]:checked + span {
    color: var(--primary);
    font-weight: 600;
}

.radio-option:has(input[type="radio"]:checked) {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
}

[data-theme="dark"] .radio-option:has(input[type="radio"]:checked) {
    background: rgba(0, 102, 204, 0.2);
}

/* ===== Hero Section - Thưởng Tết ===== */
/* Sử dụng convention spacing chuẩn */
.hero-section-tet {
    background: linear-gradient(135deg, #FF6B6B 0%, #FFD93D 100%);
    border-radius: var(--radius-lg);
    padding: var(--section-padding);
    margin-top: var(--section-margin-top);
    margin-bottom: var(--section-margin-bottom);
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-section-tet::before {
    content: '🎉';
    position: absolute;
    font-size: 8rem;
    opacity: 0.1;
    top: -2rem;
    right: -2rem;
    transform: rotate(-15deg);
}

.hero-tet-content {
    position: relative;
    z-index: 1;
}

.hero-tet-title {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-tet-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-tet-cta {
    background: white;
    color: #FF6B6B;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.hero-tet-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .hero-section-tet {
        padding: var(--spacing-xl);
    }
    
    .hero-tet-title {
        font-size: 1.5rem;
    }
    
    .hero-tet-subtitle {
        font-size: 1rem;
    }
}

/* ===== Hero Section - Thưởng Tết ===== */
.hero-section-tet {
    background: linear-gradient(135deg, #FF6B6B 0%, #FFD93D 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-section-tet::before {
    content: '🎉';
    position: absolute;
    font-size: 8rem;
    opacity: 0.1;
    top: -2rem;
    right: -2rem;
    transform: rotate(-15deg);
}

.hero-tet-content {
    position: relative;
    z-index: 1;
}

.hero-tet-title {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-tet-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.hero-tet-cta {
    background: white;
    color: #FF6B6B;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.hero-tet-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .hero-section-tet {
        padding: var(--spacing-xl);
    }
    
    .hero-tet-title {
        font-size: 1.5rem;
    }
    
    .hero-tet-subtitle {
        font-size: 1rem;
    }
}

/* ===== Hero Section - Main (Tính Lương Gross/Net) ===== */
.hero-section-main {
    background: linear-gradient(135deg, #0066CC 0%, #00A86B 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-top: var(--section-margin-top);
    margin-bottom: var(--section-margin-bottom);
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-section-main::before {
    content: '💵';
    position: absolute;
    font-size: 8rem;
    opacity: 0.1;
    top: -2rem;
    right: -2rem;
    transform: rotate(-15deg);
}

.hero-main-content {
    position: relative;
    z-index: 1;
}

.hero-main-title {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    line-height: 1.3;
}

.hero-main-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .hero-section-main {
        padding: var(--spacing-xl);
    }
    
    .hero-main-title {
        font-size: 1.5rem;
    }
    
    .hero-main-subtitle {
        font-size: 1rem;
    }
}

/* ===== Info Section Compact - Comparison Table ===== */
.info-section-compact {
    margin-bottom: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.info-box {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.info-header {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.info-comparison-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.comparison-table thead {
    background: var(--bg-secondary);
}

.comparison-table th {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
}

.comparison-table th:first-child {
    width: 40%;
}

.comparison-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table .new-col {
    color: var(--primary);
    font-weight: 500;
}

.comparison-table .old-col {
    color: var(--text-secondary);
}

.comparison-table tbody tr:hover {
    background: var(--bg-secondary);
}

/* ===== Calculator Section ===== */
/* Sử dụng convention spacing chuẩn */
.calculator-section {
    margin-top: var(--section-margin-bottom);
    margin-bottom: var(--section-margin-bottom);
}

.calculator-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

/* Form Styles - Inline Layout */
.calculator-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

.form-row label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.form-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    width: 100%;
    flex-wrap: wrap;
}

.form-control {
    width: 100%;
    max-width: 250px;
    padding: 0.875rem var(--spacing-md);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1.125rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: inherit;
    text-align: right;
    min-height: 48px;
    box-sizing: border-box;
    font-weight: 500;
}

/* Larger font for salary and insurance amount inputs */
#salaryAmount.form-control,
#customInsuranceAmount.form-control {
    font-size: 1.25rem;
    font-weight: 600;
    padding: 1rem var(--spacing-md);
    min-height: 52px;
}

select.form-control {
    width: 100%;
    max-width: 250px;
    text-align: left;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C757D' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
    min-height: 48px;
    box-sizing: border-box;
    font-size: 1.125rem;
}

/* Insurance base select should match salary input width */
#insuranceBase.form-control {
    width: 100%;
    max-width: 250px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control::placeholder {
    text-align: right;
    color: var(--text-tertiary);
}

/* Number inputs always right-aligned */
input[type="text"].form-control[inputmode="numeric"],
input[type="number"].form-control {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.input-unit {
    color: var(--text-secondary);
    font-size: 0.875rem;
    min-width: 50px;
    text-align: left;
    font-weight: 500;
}

.calc-btn-tet {
    background: linear-gradient(135deg, #FF6B6B, #FFD93D);
    color: white;
    border-color: #FF6B6B;
    font-weight: 700;
}

.calc-btn-tet:hover {
    background: linear-gradient(135deg, #FF5252, #FFC107);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.3);
}

.calc-btn-tet.active {
    background: linear-gradient(135deg, #FF5252, #FFC107);
    border-color: #FF5252;
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.4);
}

select.form-control {
    text-align: left;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C757D' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
    width: 200px;
}

/* Salary Readout - Inline */
.salary-readout-inline {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-style: italic;
    margin-left: var(--spacing-sm);
    white-space: nowrap;
    flex-shrink: 0;
    padding: 0.25rem 0.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

/* Calculation Type Buttons */
.calc-type-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    grid-column: 1 / -1;
}

@media (max-width: 768px) {
    .calc-type-buttons {
        grid-template-columns: 1fr;
    }
}

.calc-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    font-size: 1rem;
    position: relative;
}

.calc-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.calc-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.calc-btn.active:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

/* ===== Results Section ===== */
.results-section {
    margin-top: var(--spacing-xl);
    animation: fadeIn 0.4s ease;
}

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

/* Breakdown Section */
.breakdown-section {
    margin-bottom: var(--spacing-xl);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.breakdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border);
}

.breakdown-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.breakdown-table {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.breakdown-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-sm);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.2s;
}

.breakdown-row:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .breakdown-row:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.03);
}

.breakdown-row:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .breakdown-row:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.breakdown-row-subtotal {
    background-color: rgba(0, 0, 0, 0.05) !important;
    border-top: 2px solid var(--border);
    border-bottom: 2px solid var(--border);
    font-weight: 600;
}

[data-theme="dark"] .breakdown-row-subtotal {
    background-color: rgba(255, 255, 255, 0.08) !important;
}

.breakdown-row-total {
    background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
    border-top: 2px solid var(--primary);
    border-bottom: none;
    font-weight: 700;
    font-size: 1.1rem;
    margin-top: var(--spacing-xs);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

[data-theme="dark"] .breakdown-row-total {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(99, 102, 241, 0.5)) !important;
}

.breakdown-label {
    font-size: 0.9375rem;
    color: var(--text-primary);
    text-align: left;
}

.breakdown-row-subtotal .breakdown-label,
.breakdown-row-total .breakdown-label {
    font-size: 1rem;
}

.breakdown-value {
    font-size: 1rem;
    font-weight: 600;
    text-align: right;
    font-variant-numeric: tabular-nums;
    min-width: 150px;
}

.breakdown-value.positive {
    color: var(--success);
}

.breakdown-value.negative {
    color: var(--danger);
}

.breakdown-row-total .breakdown-value {
    font-size: 1.25rem;
    color: white;
}

[data-theme="dark"] .breakdown-row-total .breakdown-value {
    color: var(--text-primary);
}

/* Difference Highlight - Compact */
.difference-highlight {
    background: linear-gradient(135deg, var(--secondary), #00C96B);
    color: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.difference-highlight.negative {
    background: linear-gradient(135deg, var(--danger), #E63946);
}

.difference-highlight.positive {
    background: linear-gradient(135deg, var(--secondary), #00C96B);
}

.difference-label {
    font-size: 0.875rem;
    opacity: 0.95;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.difference-amount-wrapper {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.difference-amount {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.difference-percent {
    font-size: 1rem;
    font-weight: 600;
    opacity: 0.95;
}

.difference-note {
    font-size: 0.875rem;
    opacity: 0.9;
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto;
}

/* Share Section */
.share-section {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
}

.share-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.share-btn svg {
    flex-shrink: 0;
}

.share-facebook {
    border-color: #1877F2;
    color: #1877F2;
}

.share-facebook:hover {
    background: #1877F2;
    color: white;
}

.share-link {
    border-color: var(--primary);
    color: var(--primary);
}

.share-link:hover {
    background: var(--primary);
    color: white;
}

.share-copy {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

.share-copy:hover {
    background: var(--text-secondary);
    color: white;
}

.share-copy.copied {
    background: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

.feedback-section {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.feedback-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

.feedback-btn svg {
    flex-shrink: 0;
}

/* ===== Blog Section Mini ===== */
.blog-section-mini {
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.blog-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.blog-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.blog-card,
a.blog-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: block;
    text-decoration: none;
    color: inherit;
}

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

.blog-card img {
    transition: transform 0.3s ease;
}

.blog-card:hover img {
    transform: scale(1.05);
}

.blog-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.blog-card-excerpt {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.blog-card-link,
.blog-card .blog-card-link,
a.blog-card .blog-card-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
    display: inline-block;
}

.blog-card-link:hover,
a.blog-card:hover .blog-card-link {
    color: var(--primary-hover);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .blog-cards {
        grid-template-columns: 1fr;
    }
}

/* Results Grid - 2 Columns */
.results-grid-2cols {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .results-grid-2cols {
        grid-template-columns: 1fr 1fr;
    }
}

.result-column {
    background: var(--bg-primary);
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.3s ease;
}

.result-column:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.result-column-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--divider);
    text-align: center;
    letter-spacing: -0.02em;
}

.result-main-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.result-main-item {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.result-main-item.primary {
    background: linear-gradient(135deg, var(--primary-light), transparent);
    border: 1px solid var(--primary);
    border-left-width: 4px;
}

[data-theme="dark"] .result-main-item.primary {
    background: rgba(0, 102, 204, 0.1);
}

/* Highlight for important items in new law */
.result-main-item.highlight-new {
    background: linear-gradient(135deg, #E8F5E9, transparent);
    border: 1px solid var(--secondary);
    border-left-width: 4px;
}

[data-theme="dark"] .result-main-item.highlight-new {
    background: rgba(0, 168, 107, 0.15);
    border-color: var(--secondary);
}

.result-main-item.highlight-new .result-main-value {
    color: var(--secondary);
    font-weight: 700;
}

.result-main-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.result-main-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.result-main-item.primary .result-main-value {
    font-size: 1.75rem;
    color: var(--primary);
}

.result-sub-detail {
    margin-top: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

/* Result Breakdown Style - With beautiful colors */
.result-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--bg-primary);
    border: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.result-breakdown-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    transition: all 0.2s ease;
    background: var(--bg-secondary);
    border-radius: 0;
    min-height: 48px;
}

/* First row (Lương Gross) - Primary style với gradient đẹp - Cấp border 1 */
.result-breakdown-row:first-child {
    background: linear-gradient(135deg, var(--primary-light), transparent);
    border: 1px solid var(--primary);
    border-left-width: 4px;
    border-bottom: none;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

[data-theme="dark"] .result-breakdown-row:first-child {
    background: rgba(0, 102, 204, 0.1);
}

.result-breakdown-row:nth-child(even):not(:first-child):not(.result-breakdown-subtotal):not(.result-breakdown-total) {
    background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .result-breakdown-row:nth-child(even):not(:first-child):not(.result-breakdown-subtotal):not(.result-breakdown-total) {
    background-color: rgba(255, 255, 255, 0.03);
}

.result-breakdown-row:hover:not(.result-breakdown-subtotal):not(.result-breakdown-total) {
    background-color: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .result-breakdown-row:hover:not(.result-breakdown-subtotal):not(.result-breakdown-total) {
    background-color: rgba(255, 255, 255, 0.05);
}

.result-breakdown-subtotal {
    background: var(--bg-secondary) !important;
    border: none;
    font-weight: 600;
}

/* Total row (Lương Net) - Highlight-new style với màu xanh lá đẹp - Cấp border 2 */
.result-breakdown-total {
    background: linear-gradient(135deg, #E8F5E9, transparent) !important;
    border: 1px solid var(--secondary);
    border-left-width: 4px;
    border-bottom: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    font-weight: 700;
    margin-top: var(--spacing-xs);
}

[data-theme="dark"] .result-breakdown-total {
    background: rgba(0, 168, 107, 0.15) !important;
    border-color: var(--secondary);
}

.result-breakdown-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    text-align: left;
    font-weight: 500;
    line-height: 1.5;
}

.result-breakdown-row:first-child .result-breakdown-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

.result-breakdown-subtotal .result-breakdown-label,
.result-breakdown-total .result-breakdown-label {
    font-size: 1.0625rem;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.result-breakdown-value {
    font-size: 1.0625rem;
    font-weight: 600;
    text-align: right;
    font-variant-numeric: tabular-nums;
    min-width: 160px;
    color: var(--text-primary);
    line-height: 1.5;
}

/* First row (Lương Gross) value - Primary color và font lớn */
.result-breakdown-row:first-child .result-breakdown-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.result-breakdown-value.positive {
    color: var(--success);
}

.result-breakdown-value.negative {
    color: var(--danger);
}

/* Total row (Lương Net) value - Secondary color và font lớn */
.result-breakdown-total .result-breakdown-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--secondary);
}

[data-theme="dark"] .result-breakdown-total .result-breakdown-value {
    color: var(--secondary);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-2xl);
}

.footer-content {
    text-align: center;
}

.footer-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
}

.footer-note {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-sm);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .calculator-card {
        padding: var(--spacing-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .form-row label {
        font-size: 0.875rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .form-control {
        max-width: 100%;
        width: 100%;
        font-size: 1rem;
    }
    
    #salaryAmount.form-control,
    #customInsuranceAmount.form-control {
        font-size: 1.125rem;
    }
    
    select.form-control {
        max-width: 100%;
        width: 100%;
    }
    
    .form-input-group {
        flex-wrap: wrap;
    }
    
    .salary-readout-inline {
        font-size: 0.75rem;
        margin-top: var(--spacing-xs);
        width: 100%;
        text-align: left;
    }
    
    .currency-radio-group {
        width: 100%;
        gap: var(--spacing-xs);
    }
    
    .exchange-rate-inline {
        width: 100%;
        margin-top: var(--spacing-xs);
    }
    
    .exchange-rate-input {
        flex: 1;
        max-width: 120px;
    }
    
    .result-column {
        padding: var(--spacing-md);
    }
    
    .result-main-value {
        font-size: 1.125rem;
    }
    
    .result-main-item.primary .result-main-value {
        font-size: 1.25rem;
    }
    
    .difference-highlight {
        padding: var(--spacing-md);
    }
    
    .difference-amount {
        font-size: 1.5rem;
    }
    
    .difference-percent {
        font-size: 0.875rem;
    }
    
    .calc-type-buttons {
        grid-column: 1;
    }
    
    .share-buttons {
        flex-direction: column;
    }
    
    .share-btn {
        width: 100%;
        justify-content: center;
    }
    
    .comparison-table {
        font-size: 0.875rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-sm) 0;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .calculator-card {
        padding: var(--spacing-sm);
    }
    
    .form-control {
        font-size: 0.9375rem;
        padding: 0.75rem var(--spacing-sm);
        min-height: 44px;
    }
    
    #salaryAmount.form-control,
    #customInsuranceAmount.form-control {
        font-size: 1rem;
        padding: 0.875rem var(--spacing-sm);
        min-height: 48px;
    }
    
    .result-column {
        padding: var(--spacing-sm);
    }
    
    .result-main-value {
        font-size: 1rem;
    }
    
    .result-main-item.primary .result-main-value {
        font-size: 1.125rem;
    }
    
    .difference-highlight {
        padding: var(--spacing-sm);
    }
    
    .difference-amount {
        font-size: 1.25rem;
    }
    
    .difference-percent {
        font-size: 0.75rem;
    }
    
    .calc-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }
    
    .comparison-table {
        font-size: 0.8125rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
}

/* ===== Print Styles ===== */
@media print {
    .header,
    .ad-banner,
    .footer,
    .theme-toggle,
    .calc-type-buttons,
    .info-details summary {
        display: none;
    }
    
    .results-section {
        display: block !important;
    }
    
    .info-details {
        border: none;
    }
    
    .info-content {
        display: block;
        border: none;
        padding: 0;
    }
}