:root {
    --primary-color: #0d2b4f;
    --secondary-color: #f4f7f6;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #ffffff;
    --border-color: #dddddd;
    --success-color: #28a745;
    --error-color: #dc3545;
    
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    --border-radius: 4px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    font-size: 16px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-top: var(--spacing-md); }
h3 { font-size: 1.5rem; margin-top: var(--spacing-sm); }
p { margin-bottom: var(--spacing-sm); }

ul, ol {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

li { margin-bottom: var(--spacing-xs); }

/* Layout & Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-lg) 0;
}

.section-light {
    background-color: var(--secondary-color);
}

/* Header & Navigation */
.site-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo span {
    font-weight: normal;
    color: var(--text-light);
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.main-nav li {
    margin: 0;
    position: relative;
}

.main-nav a {
    color: var(--text-color);
    padding: var(--spacing-sm);
    display: block;
    font-weight: 500;
}

.main-nav a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

/* Dropdown Menu */
.has-dropdown > ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-color);
    min-width: 250px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border-color);
    z-index: 100;
}

.has-dropdown:hover > ul {
    display: block;
}

.has-dropdown > ul li {
    width: 100%;
}

.has-dropdown > ul a {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.has-dropdown > ul li:last-child a {
    border-bottom: none;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #fff;
    text-decoration: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-secondary:hover {
    background-color: var(--accent-color);
    color: #fff;
    text-decoration: none;
}

/* Hero Section */
.hero {
    background-color: var(--primary-color);
    color: #fff;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero h1 {
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    color: #e0e0e0;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Cards / Boxes */
.card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

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

.card h3 {
    margin-top: 0;
}

.card-link {
    margin-top: auto;
    display: inline-block;
    font-weight: 600;
}

/* Breadcrumbs */
.breadcrumbs {
    padding: var(--spacing-sm) 0;
    background-color: var(--secondary-color);
    font-size: 0.9rem;
}

.breadcrumbs ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
}

.breadcrumbs li {
    margin: 0;
}

.breadcrumbs li:not(:last-child)::after {
    content: "›";
    margin: 0 var(--spacing-xs);
    color: var(--text-light);
}

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

/* FAQ Accordion */
.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    background-color: var(--bg-color);
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: "+";
    font-size: 1.5rem;
}

.faq-question[aria-expanded="true"]::after {
    content: "−";
}

.faq-answer {
    padding: 0 var(--spacing-sm) var(--spacing-sm);
    display: none;
}

.faq-answer[hidden="false"] {
    display: block;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    text-align: left;
}

th {
    background-color: var(--secondary-color);
    font-weight: 600;
    color: var(--primary-color);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-sm);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.required::after {
    content: "*";
    color: var(--error-color);
    margin-left: 4px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
}

textarea {
    resize: vertical;
    min-height: 150px;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.checkbox-group input {
    margin-top: 5px;
}

.form-message {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius);
    display: none;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.error-text {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 4px;
    display: block;
}

/* Process Steps */
.process-steps {
    list-style: none;
    padding: 0;
    counter-reset: step;
}

.process-steps li {
    position: relative;
    padding-left: 3rem;
    margin-bottom: var(--spacing-md);
}

.process-steps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* CTA Section */
.cta-section {
    background-color: var(--secondary-color);
    text-align: center;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

/* Footer */
.site-footer {
    background-color: var(--primary-color);
    color: #fff;
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-col h4 {
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: var(--spacing-xs);
}

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

.footer-col a {
    color: #ccc;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: var(--spacing-sm);
    text-align: center;
    font-size: 0.875rem;
    color: #ccc;
}

/* Author Box */
.author-box {
    background-color: var(--secondary-color);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--accent-color);
    color: #fff;
}

/* Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-color);
    color: white;
    padding: 8px;
    z-index: 1001;
    transition: top 0.2s;
}

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

/* Media Queries */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-color);
        box-shadow: var(--box-shadow);
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .main-nav li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .has-dropdown > ul {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        background-color: var(--secondary-color);
        padding-left: var(--spacing-sm);
    }
    
    .has-dropdown.active > ul {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* =============================================
   Image Components
   ============================================= */

/* Hero with background image */
.hero-image {
    background-color: var(--primary-color);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    color: #fff;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-image::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 43, 79, 0.88) 0%, rgba(13, 43, 79, 0.70) 100%);
}

.hero-image .container {
    position: relative;
    z-index: 1;
}

.hero-image h1 {
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.hero-image p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    color: #e0e0e0;
}

/* Page header with image banner */
.page-header-img {
    width: 100%;
    max-height: 360px;
    object-fit: cover;
    border-radius: 0;
    display: block;
}

/* Section image (full-width within section) */
.section-img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    margin-bottom: var(--spacing-md);
    object-fit: cover;
}

/* Image + text side-by-side layout */
.img-text-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

.img-text-grid img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    object-fit: cover;
    max-height: 400px;
}

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

/* Feature image card */
.img-card {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.10);
}

.img-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.img-card:hover img {
    transform: scale(1.03);
}

.img-card-body {
    padding: var(--spacing-sm);
    background: var(--bg-color);
}

/* Lazy loading placeholder */
img[loading="lazy"] {
    background-color: var(--secondary-color);
}