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

html {
    scroll-behavior: smooth;
}

:root {
    --primary-color: #008080;
    --accent-color: #40E0D0;
    --text-dark: #1a1a1a;
    --text-light: #ffffff;
    --bg-light: #f8f9fa;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Work Sans', sans-serif;
    color: var(--text-dark);
    line-height: 1.7;
    font-size: 18px;
    overflow-x: hidden;
    padding-top: 76px;
}

/* ================================
   Navigation
   ================================ */
.navbar {
    background-color: var(--text-light) !important;
    box-shadow: var(--shadow);
    padding: 1rem 0 !important;
}

.navbar-brand {
    font-size: 1.75rem !important;
    font-weight: 700 !important;
    color: var(--primary-color) !important;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.navbar-brand:hover {
    color: var(--accent-color) !important;
}

.navbar-brand img {
    width: 40px;
    height: 40px;
    box-shadow: none !important;
}

.navbar-nav {
    list-style: none !important;
}

.navbar-nav .nav-item {
    list-style: none !important;
}

.navbar-nav .nav-item::before,
.navbar-nav .nav-item::after {
    display: none !important;
    content: none !important;
}

.navbar-nav .nav-link {
    color: var(--text-dark) !important;
    font-weight: 500 !important;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease !important;
    font-size: 17px !important;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
}

.navbar-toggler {
    border-color: var(--primary-color) !important;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23008080' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* ================================
   Hero Section
   ================================ */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%) !important;
    color: var(--text-light) !important;
    padding: 120px 0 80px 0 !important;
    position: relative !important;
    overflow: hidden !important;
    min-height: 500px !important;
}

.hero-section::before {
    content: '' !important;
    position: absolute !important;
    top: -50% !important;
    right: -10% !important;
    width: 600px !important;
    height: 600px !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border-radius: 50% !important;
    z-index: 0 !important;
}

.hero-section::after {
    content: '' !important;
    position: absolute !important;
    bottom: -30% !important;
    left: -5% !important;
    width: 400px !important;
    height: 400px !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border-radius: 50% !important;
    z-index: 0 !important;
}

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

.hero-section h1 {
    font-size: 3.5rem !important;
    font-weight: 700 !important;
    margin-bottom: 1.5rem !important;
    line-height: 1.2 !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2) !important;
}

.hero-section .lead {
    font-size: 1.35rem !important;
    margin-bottom: 2rem !important;
    max-width: 800px !important;
    line-height: 1.6 !important;
    opacity: 0.95 !important;
}

.hero-btn {
    background-color: var(--text-light) !important;
    color: var(--primary-color) !important;
    font-weight: 600 !important;
    font-size: 1.1rem !important;
    padding: 0.875rem 2.5rem !important;
    border-radius: 50px !important;
    border: none !important;
    transition: all 0.3s ease !important;
    box-shadow: var(--shadow) !important;
    display: inline-block !important;
    text-decoration: none !important;
    white-space: nowrap !important;
}

.hero-btn:hover {
    background-color: var(--text-dark) !important;
    color: var(--text-light) !important;
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-lg) !important;
}

/* ================================
   Table of Contents
   ================================ */
.toc-section {
    background-color: var(--bg-light);
    padding: 60px 0;
    border-top: 3px solid var(--accent-color);
}

.toc-list {
    list-style: none !important;
    padding-left: 0 !important;
    margin: 0 !important;
}

.toc-list li {
    padding: 12px 0 12px 30px !important;
    position: relative !important;
    font-size: 18px !important;
    list-style: none !important;
}

.toc-list li::before {
    content: '▸' !important;
    position: absolute !important;
    left: 0 !important;
    color: var(--accent-color) !important;
    font-size: 20px !important;
}

.toc-list li::after {
    display: none !important;
    content: none !important;
}

.toc-list a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.toc-list a:hover {
    color: var(--primary-color);
}

/* ================================
   Content Sections
   ================================ */
.content-section {
    padding: 70px 0;
}

.content-section:nth-child(even) {
    background-color: var(--bg-light);
}

.content-section h2 {
    font-size: 2.5rem !important;
    font-weight: 700 !important;
    margin-bottom: 2rem !important;
    color: var(--primary-color) !important;
    border-bottom: 3px solid var(--accent-color) !important;
    padding-bottom: 1rem !important;
}

.content-section h3 {
    font-size: 1.75rem !important;
    font-weight: 600 !important;
    margin-top: 2.5rem !important;
    margin-bottom: 1.25rem !important;
    color: var(--primary-color) !important;
}

.content-section p {
    font-size: 18px !important;
    line-height: 1.8 !important;
    margin-bottom: 1.5rem !important;
    color: var(--text-dark) !important;
}

.content-section strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* ================================
   Lists Styling
   ================================ */
.content-section ul,
.content-section ol {
    list-style: none !important;
    padding-left: 0 !important;
    margin: 2rem 0 !important;
}

.content-section ul li,
.content-section ol li {
    padding-left: 40px !important;
    margin-bottom: 1.25rem !important;
    position: relative !important;
    font-size: 18px !important;
    line-height: 1.7 !important;
    list-style: none !important;
}

.content-section ul li::before {
    content: '' !important;
    position: absolute !important;
    left: 0 !important;
    top: 8px !important;
    width: 12px !important;
    height: 12px !important;
    background-color: var(--accent-color) !important;
    border-radius: 50% !important;
}

.content-section ul li::after,
.content-section ol li::after {
    display: none !important;
    content: none !important;
}

.content-section ul li::marker,
.content-section ol li::marker {
    content: none !important;
    display: none !important;
}

.content-section ol {
    counter-reset: custom-counter;
}

.content-section ol li {
    counter-increment: custom-counter;
}

.content-section ol li::before {
    content: counter(custom-counter) !important;
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    width: 28px !important;
    height: 28px !important;
    background-color: var(--accent-color) !important;
    border-radius: 50% !important;
    color: var(--text-light) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: 600 !important;
    font-size: 16px !important;
}

/* ================================
   Cards
   ================================ */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 2rem;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--text-light);
    font-weight: 600;
    font-size: 1.25rem;
    padding: 1.25rem;
    border: none;
}

.card-header i {
    color: var(--text-light);
    margin-right: 0.5rem;
}

.card-body {
    padding: 1.75rem;
}

/* ================================
   Tables
   ================================ */
.table-container {
    overflow-x: auto;
    margin: 2.5rem 0;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    margin: 0;
    border-collapse: collapse;
    background-color: var(--text-light);
    font-size: 17px;
}

thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--text-light);
}

thead th {
    padding: 1.25rem;
    text-align: left;
    font-weight: 600;
    font-size: 18px;
    white-space: nowrap;
}

tbody tr {
    border-bottom: 1px solid #e9ecef;
    transition: background-color 0.3s ease;
}

tbody tr:hover {
    background-color: rgba(64, 224, 208, 0.1);
}

tbody td {
    padding: 1.125rem;
    color: var(--text-dark);
    vertical-align: middle;
}

tbody tr:last-child {
    border-bottom: none;
}

/* ================================
   Images
   ================================ */
.content-section img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.content-section img:hover {
    transform: scale(1.02);
}

.content-section picture {
    display: block;
    margin: 2rem 0;
}

/* ================================
   FAQ Section
   ================================ */
.faq-item {
    background-color: var(--text-light);
    border-radius: 12px;
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--accent-color);
}

.faq-question {
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--primary-color);
    margin-bottom: 0.875rem;
}

.faq-answer {
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-dark);
}

/* ================================
   Conversion Buttons
   ================================ */
.cta-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%) !important;
    color: var(--text-light) !important;
    font-weight: 600 !important;
    font-size: 1.1rem !important;
    padding: 0.875rem 2.5rem !important;
    border-radius: 50px !important;
    border: none !important;
    transition: all 0.3s ease !important;
    box-shadow: var(--shadow) !important;
    display: inline-block !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    margin: 1.5rem 0 !important;
}

.cta-btn:hover {
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-lg) !important;
    opacity: 0.9 !important;
}

/* ================================
   Footer
   ================================ */
footer {
    background-color: #1a1a1a;
    color: var(--text-light);
    padding: 60px 0 30px 0;
}

footer h5 {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

footer ul {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

footer ul li {
    margin-bottom: 0.75rem !important;
    list-style: none !important;
}

footer ul li::before,
footer ul li::after {
    display: none !important;
    content: none !important;
}

footer ul li::marker {
    content: none !important;
    display: none !important;
}

footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 16px;
}

footer a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 15px;
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 992px) {
    .hero-section h1 {
        font-size: 2.75rem !important;
    }

    .hero-section .lead {
        font-size: 1.2rem !important;
    }

    .content-section h2 {
        font-size: 2rem !important;
    }

    .content-section h3 {
        font-size: 1.5rem !important;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 17px;
        padding-top: 70px;
    }

    .navbar-collapse {
        background-color: var(--text-light);
        padding: 1rem;
        margin-top: 1rem;
        border-radius: 8px;
        box-shadow: var(--shadow);
    }

    .hero-section {
        padding: 80px 0 60px 0 !important;
        min-height: 400px !important;
    }

    .hero-section h1 {
        font-size: 2.25rem !important;
    }

    .hero-section .lead {
        font-size: 1.1rem !important;
    }

    .hero-btn,
    .cta-btn {
        font-size: 1rem !important;
        padding: 0.75rem 2rem !important;
    }

    .content-section {
        padding: 50px 0;
    }

    .content-section h2 {
        font-size: 1.75rem !important;
    }

    .content-section h3 {
        font-size: 1.35rem !important;
    }

    .content-section p,
    .content-section ul li,
    .content-section ol li {
        font-size: 17px !important;
    }

    thead th,
    tbody td {
        padding: 0.875rem;
        font-size: 15px;
    }

    .navbar-brand {
        font-size: 1.5rem !important;
    }

    footer {
        padding: 40px 0 20px 0;
        text-align: center;
    }

    footer .col-md-3 {
        margin-bottom: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 1.875rem !important;
    }

    .hero-section .lead {
        font-size: 1rem !important;
    }

    .content-section h2 {
        font-size: 1.5rem !important;
    }

    .content-section h3 {
        font-size: 1.25rem !important;
    }

    .hero-section::before,
    .hero-section::after {
        display: none;
    }
}

/* ================================
   Utility Classes
   ================================ */
.text-primary-custom {
    color: var(--primary-color) !important;
}

.text-accent-custom {
    color: var(--accent-color) !important;
}

.bg-primary-custom {
    background-color: var(--primary-color) !important;
}

.bg-accent-custom {
    background-color: var(--accent-color) !important;
}