/* Vietnamese Business Structure Guide - Main Stylesheet */
/* Strawberry Sunday Brand Colors: #cc7f6f (primary), #e2c7bc (secondary) */

/* === BASE STYLES === */
:root {
    --primary-color: #cc7f6f;
    --secondary-color: #e2c7bc;
    --dark-color: #2d3748;
    --light-color: #f7fafc;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --danger-color: #f56565;
    --info-color: #4299e1;
    --border-color: #e2e8f0;
    --text-color: #2d3748;
    --text-light: #718096;
    --max-width: 1200px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #ffffff;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--dark-color);
}

h1 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 2rem; margin-top: 2.5rem; margin-bottom: 1.2rem; }
h3 { font-size: 1.5rem; margin-top: 2rem; }
h4 { font-size: 1.25rem; margin-top: 1.5rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p { margin-bottom: 1rem; }
p.lead { font-size: 1.25rem; color: var(--text-light); margin-bottom: 2rem; }
p.emphasis { font-weight: 600; color: var(--primary-color); }

ul, ol { margin-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.5rem; }

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}
a:hover { color: #b56957; }

/* === NAVIGATION === */
.navbar {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    margin-right: 0.5rem;
    font-size: 1.5rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* === PROGRESS BAR === */
.progress-bar {
    height: 4px;
    background-color: var(--border-color);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.5s ease;
}

/* === BREADCRUMB === */
.breadcrumb {
    background-color: var(--light-color);
    padding: 1rem 0;
    font-size: 0.9rem;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb a {
    color: var(--text-light);
}

.breadcrumb i {
    color: var(--text-light);
    font-size: 0.7rem;
}

/* === HERO SECTION === */
.hero-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #f5e6df 100%);
    padding: 4rem 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-section h1 {
    color: var(--dark-color);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-highlight {
    background-color: white;
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: 8px;
    display: flex;
    gap: 1rem;
    text-align: left;
    max-width: 800px;
    margin: 2rem auto 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.hero-highlight i {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.hero-highlight h3 {
    margin-top: 0;
    color: var(--primary-color);
}

/* === CONTENT SECTIONS === */
.content-section {
    padding: 3rem 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
}

/* === SIDEBAR === */
.sidebar {
    position: sticky;
    top: 80px;
    align-self: start;
}

.sidebar-content {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
}

.sidebar h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1rem;
}

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

.page-nav li {
    margin-bottom: 0.5rem;
}

.page-nav a {
    display: block;
    padding: 0.5rem;
    border-radius: 4px;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: var(--transition);
}

.page-nav a:hover {
    background-color: white;
    color: var(--primary-color);
}

/* === MAIN CONTENT === */
.main-content {
    min-width: 0;
}

/* === BOXES AND CARDS === */
.learning-outcome,
.info-box,
.warning-box,
.success-box,
.insight-box,
.key-takeaway,
.alert-box {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border-left: 4px solid;
}

.learning-outcome {
    background-color: #ebf8ff;
    border-left-color: var(--info-color);
}

.learning-outcome i {
    color: var(--info-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-box {
    background-color: #e6fffa;
    border-left-color: #38b2ac;
}

.info-box i {
    color: #38b2ac;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-box {
    background-color: #fffaf0;
    border-left-color: var(--warning-color);
}

.warning-box i {
    color: var(--warning-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-box {
    background-color: #fff5f5;
    border-left-color: var(--danger-color);
}

.alert-box i {
    color: var(--danger-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.success-box,
.key-takeaway {
    background-color: #f0fff4;
    border-left-color: var(--success-color);
}

.success-box i,
.key-takeaway i {
    color: var(--success-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.insight-box {
    background-color: #fef5e7;
    border-left-color: #f39c12;
}

.insight-box i {
    color: #f39c12;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.key-takeaway h3 {
    margin-top: 0;
    color: var(--success-color);
}

/* === GRIDS === */
.learning-grid,
.stat-grid,
.opportunity-grid,
.credibility-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.learning-card,
.opportunity-card,
.credibility-item {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: var(--transition);
}

.learning-card:hover,
.opportunity-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.learning-card .card-icon,
.opportunity-card i:first-child {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.learning-card h3,
.opportunity-card h4 {
    color: var(--dark-color);
    margin-top: 0;
}

/* === STAT CARDS === */
.stat-card {
    background-color: white;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
}

.stat-card.highlight {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--secondary-color), white);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* === COMPARISON TABLES === */
.comparison-table,
.structure-comparison-table,
.tax-comparison-table,
.costs-comparison-table {
    overflow-x: auto;
    margin: 2rem 0;
}

/* Grid-based Comparison Table (for homepage) */
.comparison-table {
    display: grid;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr;
    gap: 0;
    align-items: center;
}

.comparison-header {
    background-color: var(--dark-color);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.comparison-header > div {
    padding: 1.25rem 1rem;
    text-align: center;
}

.comparison-label {
    padding: 1rem;
    font-weight: 600;
    color: var(--text-color);
    background-color: #f8f9fa;
    border-right: 1px solid var(--border-color);
}

.comparison-value {
    padding: 1rem;
    text-align: center;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.comparison-value:last-child {
    border-right: none;
}

.comparison-row {
    border-bottom: 1px solid var(--border-color);
}

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

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

.comparison-row:hover .comparison-value {
    background-color: var(--light-color);
}

.comparison-option.household {
    background-color: #fef5e7;
}

.comparison-option.llc {
    background-color: #e8f5e9;
}

.comparison-value .fa-check-circle {
    color: var(--success-color);
    margin-right: 0.25rem;
}

.comparison-value .fa-times-circle {
    color: var(--danger-color);
    margin-right: 0.25rem;
}

.comparison-value .fa-exclamation-triangle {
    color: var(--warning-color);
    margin-right: 0.25rem;
}

/* Responsive adjustments for comparison table */
@media (max-width: 768px) {
    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
    }
    
    .comparison-header > div:first-child {
        display: none;
    }
    
    .comparison-label {
        font-size: 0.95rem;
        background-color: var(--primary-color);
        color: white;
        border-right: none;
        border-bottom: 1px solid white;
    }
    
    .comparison-value {
        border-right: none;
    }
    
    .comparison-option {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background-color: var(--dark-color);
    color: white;
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background-color: var(--light-color);
}

.highlight-row {
    background-color: #fef5e7;
}

.highlight-row td {
    border-top: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.warning-cell {
    color: var(--warning-color);
    font-weight: 600;
}

.success-cell {
    color: var(--success-color);
    font-weight: 600;
}

.no-cell {
    color: var(--danger-color);
}

.yes-cell {
    color: var(--success-color);
}

/* === BADGES === */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-green { background-color: #c6f6d5; color: #22543d; }
.badge-orange { background-color: #feebc8; color: #7c2d12; }
.badge-red { background-color: #fed7d7; color: #742a2a; }

.popular-badge,
.warning-badge,
.priority-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.popular-badge {
    background-color: var(--success-color);
    color: white;
}

.warning-badge {
    background-color: var(--warning-color);
    color: white;
}

.priority-badge.high {
    background-color: var(--danger-color);
    color: white;
}

.priority-badge.medium {
    background-color: var(--info-color);
    color: white;
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn i {
    margin-right: 0.5rem;
}

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

.btn-primary:hover {
    background-color: #b56957;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--dark-color);
}

.btn-secondary:hover {
    background-color: #d4b5a8;
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin: 2rem 0;
}

/* === NAVIGATION BUTTONS === */
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin: 3rem 0;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

/* === TIMELINE === */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 120px;
}

.timeline-date {
    position: absolute;
    left: 0;
    top: 0;
    width: 100px;
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.timeline-content {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.timeline-content h4 {
    margin-top: 0;
    color: var(--primary-color);
}

.impact-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 600;
    margin-top: 1rem;
}

.impact-badge.red {
    background-color: #fed7d7;
    color: #742a2a;
}

.impact-badge.orange {
    background-color: #feebc8;
    color: #7c2d12;
}

.impact-badge.yellow {
    background-color: #fefcbf;
    color: #744210;
}

/* === STRUCTURE CARDS === */
.structure-card {
    background-color: white;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin: 2rem 0;
    overflow: hidden;
}

.structure-card.highlight {
    border-color: var(--primary-color);
}

.structure-card.warning {
    border-color: var(--warning-color);
}

.structure-header {
    background-color: var(--light-color);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
}

.structure-card.highlight .structure-header {
    background: linear-gradient(135deg, var(--secondary-color), var(--light-color));
}

.structure-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.structure-body {
    padding: 1.5rem;
}

.two-column-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 1.5rem 0;
}

.feature-list {
    list-style: none;
    margin-left: 0;
}

.feature-list li {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.feature-list i {
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.25rem;
}

/* === RECOMMENDATION BOX === */
.recommendation-box {
    background-color: #f0fff4;
    border-left: 4px solid var(--success-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.recommendation-box.warning {
    background-color: #fffaf0;
    border-left-color: var(--warning-color);
}

.recommendation-box.success {
    background-color: #f0fff4;
    border-left-color: var(--success-color);
}

.recommendation-box i {
    font-size: 1.5rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.recommendation-box h4 {
    margin-top: 0;
    display: flex;
    align-items: center;
}

/* === CALCULATOR === */
.calculator-section {
    margin: 2rem 0;
}

.calculator-box {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 2rem;
}

.calculator-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.calculator-results {
    margin-top: 2rem;
}

/* === CHART CONTAINER === */
.chart-container {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin: 2rem 0;
}

.chart-container h4 {
    margin-top: 0;
    text-align: center;
}

.chart-container canvas {
    max-height: 400px;
}

/* === FOOTER === */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

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

.footer-section a {
    color: #cbd5e0;
}

.footer-section a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid #4a5568;
    padding-top: 1rem;
    text-align: center;
    color: #cbd5e0;
}

.footer-note {
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* === CHECKLIST === */
.action-checklist {
    margin: 2rem 0;
}

.checklist-section {
    background-color: white;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.checklist-section.success {
    border-color: var(--success-color);
}

.checklist-header {
    background-color: var(--light-color);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.checklist-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checklist-items {
    padding: 1.5rem;
}

.checklist-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    background-color: var(--light-color);
}

.checklist-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 0.25rem;
    cursor: pointer;
}

.checklist-item label {
    cursor: pointer;
}

.checklist-item strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--dark-color);
}

.checklist-item p {
    margin: 0.25rem 0;
    font-size: 0.95rem;
}

.task-tip {
    font-style: italic;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 968px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        order: 2;
    }
    
    .main-content {
        order: 1;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .two-column-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-inputs {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: 2rem; }
    .hero-section h1 { font-size: 2.25rem; }
}

@media (max-width: 640px) {
    .navigation-buttons {
        flex-direction: column;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-date {
        font-size: 0.75rem;
        padding: 0.25rem;
    }
}