/* ========== Global Styles & CSS Variables ========== */
:root {
    /* Brand Color Palette */
    --primary-color: #1D2A3B;
    /* Deep Navy/Midnight Blue */
    --accent-color: #00BFA5;
    /* Vibrant Teal/Aqua */
    --secondary-color: #FF6B35;
    /* Sunset Orange */
    --neutral-bg: #F5F5F7;
    /* Soft Gray */
    --neutral-text: #333333;
    /* Charcoal Gray */
    --white: #FFFFFF;
    --light-gray: #EEEEEE;
    --medium-gray: #CCCCCC;
    --dark-gray: #666666;

    /* Typography */
    --primary-font: 'Poppins', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

    /* Spacing Variables */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Box Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* Dark Mode Variables */
.dark-mode {
    --primary-color: #121c28;
    /* Darker Navy */
    --neutral-bg: #1E1E24;
    /* Dark Background */
    --neutral-text: #F5F5F7;
    /* Light Text */
    --white: #262730;
    /* Dark Card Background */
    --light-gray: #333333;
    --medium-gray: #444444;
    --dark-gray: #AAAAAA;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--primary-font);
    background-color: var(--neutral-bg);
    color: var(--neutral-text);
    line-height: 1.5;
    font-weight: 400;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

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

ul,
ol {
    list-style-position: inside;
}

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

button {
    cursor: pointer;
    font-family: var(--primary-font);
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

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

h1 {
    font-size: 2.25rem;
}

h2 {
    font-size: 1.75rem;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1.1rem;
}

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

strong {
    font-weight: 600;
}

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

/* ========== Header Styles ========== */
header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-normal);
}

.logo-container img {
    height: 40px;
}

nav ul {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

nav ul li a {
    color: var(--primary-color);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-normal);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

nav ul li a.active {
    color: var(--accent-color);
}

.cta-button {
    background-color: var(--accent-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.cta-button:hover {
    background-color: var(--secondary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.cta-button::after {
    display: none;
}

/* ========== Main Content Styles ========== */
main {
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.faq-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.faq-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.faq-intro {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* ========== Search Bar Styling ========== */
.search-section {
    margin-bottom: var(--spacing-xl);
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

#faq-search {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius-lg);
    font-size: 1rem;
    background-color: var(--white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#faq-search:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 191, 165, 0.2);
}

#search-button {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--dark-gray);
    font-size: 1.1rem;
    transition: color var(--transition-fast);
}

#search-button:hover {
    color: var(--accent-color);
}

/* ========== Category Navigation ========== */
.category-nav {
    margin-bottom: var(--spacing-xl);
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.category-nav h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.faq-categories ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    list-style: none;
}

.faq-categories ul li a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--neutral-bg);
    color: var(--primary-color);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.faq-categories ul li a:hover {
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* ========== FAQ Section Styling ========== */
.faq-section {
    margin-bottom: var(--spacing-xxl);
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.faq-section h2 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--light-gray);
}

.faq-item {
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--light-gray);
    padding-bottom: var(--spacing-md);
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.faq-question {
    position: relative;
    cursor: pointer;
    padding-right: 30px;
    transition: color var(--transition-fast);
}

.faq-question::after {
    content: '\f107';
    /* Font Awesome down arrow */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: transform var(--transition-fast);
}

.faq-question:hover {
    color: var(--accent-color);
}

.faq-question.active::after {
    transform: translateY(-50%) rotate(180deg);
}

.faq-answer {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    border-left: 3px solid var(--accent-color);
}

.faq-answer p {
    margin-bottom: var(--spacing-sm);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

/* ========== Footer Styling ========== */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-md);
}

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

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo img {
    height: 40px;
}

.mode-toggle button {
    color: var(--white);
    font-size: 1.2rem;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.mode-toggle button:hover {
    color: var(--accent-color);
    transform: rotate(30deg);
}

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

.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--accent-color);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--medium-gray);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover,
.footer-section ul li a.active {
    color: var(--accent-color);
}

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

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.social-icons a:hover {
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-3px);
}

.corporate-link {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--accent-color);
    color: var(--white);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.corporate-link:hover {
    background-color: var(--secondary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: var(--medium-gray);
}

/* ========== Dark Mode Styling ========== */
.dark-mode #faq-search,
.dark-mode .faq-section,
.dark-mode .category-nav,
.dark-mode .faq-header,
.dark-mode header {
    background-color: var(--white);
}

.dark-mode .faq-categories ul li a {
    background-color: var(--light-gray);
    color: var(--neutral-text);
}

.dark-mode .faq-categories ul li a:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

.dark-mode .mode-toggle button i {
    content: '\f185';
    /* Font Awesome sun icon */
}

/* ========== Responsive Adaptations ========== */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }

    .faq-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
        align-items: center;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    nav ul {
        gap: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .faq-categories ul {
        flex-direction: column;
    }

    .faq-categories ul li {
        width: 100%;
    }

    .faq-categories ul li a {
        text-align: center;
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }

    header {
        padding: var(--spacing-md);
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .faq-header,
    .category-nav,
    .faq-section {
        padding: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-section h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .social-icons {
        justify-content: center;
    }
}

/* ========== JavaScript Functionality Support ========== */
/* For FAQ toggle functionality */
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), margin-top var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    /* Arbitrary large value */
    margin-top: var(--spacing-sm);
}

.faq-item.active .faq-question {
    color: var(--accent-color);
}

/* For search highlighting */
.highlight {
    background-color: rgba(255, 107, 53, 0.2);
    border-radius: var(--border-radius-sm);
    padding: 0 2px;
}

/* CSS for Visibility Toggle for FAQ Items */
.faq-item.hidden {
    display: none;
}

/* Animation for Search Results */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-result {
    animation: fadeIn 0.3s ease forwards;
}