/* Import Rubik Font */
@import url('https://fonts.googleapis.com/css2?family=Rubik:wght@300;400;500;600;700&display=swap');

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Rubik', sans-serif;
    font-size: 18px;
    line-height: 1.7;
    color: #333;
    background-color: #f8f9fa;
}

.nav-item {
    margin-bottom: 0 !important;
}

/* Color Variables */
:root {
    --primary-color: salmon;
    --accent-color: midnightblue;
    --text-color: #333;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
}

/* Navigation Styles */
.navbar {
    background-color: var(--bg-white) !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0 !important;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px !important;
    font-weight: 700 !important;
    color: var(--accent-color) !important;
}

.navbar-brand img {
    width: 40px;
    height: 40px;
}

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

.navbar-nav .nav-link {
    color: var(--accent-color) !important;
    font-size: 18px !important;
    font-weight: 500 !important;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
}

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

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

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

.btn-cta-nav {
    border: 2px solid var(--primary-color) !important;
    color: var(--primary-color) !important;
    font-weight: 600 !important;
    padding: 0.5rem 1.5rem !important;
    margin-left: 0.5rem !important;
    border-radius: 5px !important;
    transition: all 0.3s ease !important;
    white-space: nowrap !important;
}

.btn-cta-nav:hover {
    background-color: var(--primary-color) !important;
    color: white !important;
}

/* Hero Section */
.hero-section {
    position: relative !important;
    background: linear-gradient(135deg, #FFE5E0 0%, #E0E7FF 100%) !important;
    padding: 120px 0 80px 0 !important;
    overflow: hidden !important;
    margin-top: 0 !important;
}

.hero-section::before {
    content: '' !important;
    position: absolute !important;
    top: -50px !important;
    right: -50px !important;
    width: 300px !important;
    height: 300px !important;
    background: rgba(250, 128, 114, 0.3) !important;
    border-radius: 50% !important;
    z-index: 0 !important;
}

.hero-section::after {
    content: '' !important;
    position: absolute !important;
    bottom: -100px !important;
    left: -100px !important;
    width: 400px !important;
    height: 400px !important;
    background: rgba(25, 25, 112, 0.2) !important;
    border-radius: 50% !important;
    z-index: 0 !important;
}

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

.hero-section h1 {
    font-size: 48px !important;
    font-weight: 700 !important;
    color: var(--accent-color) !important;
    margin-bottom: 25px !important;
    line-height: 1.2 !important;
}

.hero-section p {
    font-size: 20px !important;
    color: #333 !important;
    margin-bottom: 15px !important;
    max-width: 900px !important;
}

.hero-section .btn-hero {
    border: 3px solid var(--primary-color) !important;
    color: var(--primary-color) !important;
    font-weight: 700 !important;
    font-size: 20px !important;
    padding: 15px 40px !important;
    margin-top: 30px !important;
    border-radius: 8px !important;
    transition: all 0.3s ease !important;
    white-space: nowrap !important;
    display: inline-block !important;
}

.hero-section .btn-hero:hover {
    background-color: var(--primary-color) !important;
    color: white !important;
    transform: translateY(-2px) !important;
}

/* Table of Contents */
.toc-section {
    background-color: var(--bg-white);
    padding: 40px 0;
    border-bottom: 3px solid var(--primary-color);
}

.toc-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.toc-buttons .btn {
    border: 2px solid var(--accent-color) !important;
    color: var(--accent-color) !important;
    font-weight: 600 !important;
    font-size: 18px !important;
    padding: 12px 25px !important;
    border-radius: 6px !important;
    transition: all 0.3s ease !important;
    white-space: nowrap !important;
}

.toc-buttons .btn:hover {
    background-color: var(--accent-color) !important;
    color: white !important;
}

/* Section Styles */
section {
    padding: 60px 0;
}

section h2 {
    font-size: 36px !important;
    font-weight: 700 !important;
    color: var(--accent-color) !important;
    margin-bottom: 30px !important;
    margin-top: 40px !important;
}

section h2:first-of-type {
    margin-top: 0 !important;
}

section p {
    font-size: 18px !important;
    line-height: 1.8 !important;
    color: var(--text-color) !important;
    margin-bottom: 25px !important;
}

/* Card Styles */
.content-card {
    background: var(--bg-white);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border-left: 5px solid var(--primary-color);
}

/* List Styles - Reset defaults */
ul, ol {
    list-style: none !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
}

ul li, ol li {
    position: relative;
    padding-left: 35px !important;
    margin-bottom: 15px !important;
    font-size: 18px !important;
    line-height: 1.7 !important;
}

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;
}

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

ol {
    counter-reset: item !important;
}

ol li::before {
    content: counter(item) !important;
    counter-increment: item !important;
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    color: var(--accent-color) !important;
    font-weight: 700 !important;
    font-size: 18px !important;
}

ol li::marker {
    display: none !important;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

picture {
    display: block;
    margin: 30px 0;
}

/* Conversion Buttons */
.btn-conversion {
    border: 2px solid var(--primary-color) !important;
    color: var(--primary-color) !important;
    font-weight: 700 !important;
    font-size: 20px !important;
    padding: 15px 40px !important;
    border-radius: 8px !important;
    transition: all 0.3s ease !important;
    white-space: nowrap !important;
    display: inline-block !important;
    margin: 30px 0 !important;
}

.btn-conversion:hover {
    background-color: var(--primary-color) !important;
    color: white !important;
    transform: translateY(-2px) !important;
}

/* Table Container */
.table-container {
    overflow-x: auto;
    margin: 30px 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border-radius: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-white);
}

table th {
    background-color: var(--accent-color);
    color: white;
    padding: 15px;
    text-align: left;
    font-size: 18px !important;
    font-weight: 600 !important;
}

table td {
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
    font-size: 18px !important;
}

table tr:hover {
    background-color: #f8f9fa;
}

/* Footer */
footer {
    background-color: var(--accent-color);
    color: white;
    padding: 50px 0 30px 0;
    margin-top: 60px;
}

footer h5 {
    color: var(--primary-color) !important;
    font-size: 20px !important;
    font-weight: 700 !important;
    margin-bottom: 20px !important;
}

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

footer ul li {
    margin-bottom: 10px !important;
    padding-left: 0 !important;
}

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

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

footer a {
    color: white !important;
    text-decoration: none !important;
    font-size: 18px !important;
    transition: color 0.3s ease !important;
}

footer a:hover {
    color: var(--primary-color) !important;
}

footer .copyright {
    text-align: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.2);
    font-size: 16px;
}

/* Bootstrap Icons */
.bi {
    color: var(--accent-color);
}

/* Mobile Responsive */
@media (max-width: 991px) {
    .navbar-collapse {
        background-color: var(--bg-white);
        padding: 20px;
        border-radius: 10px;
        margin-top: 15px;
    }

    .btn-cta-nav {
        margin-left: 0 !important;
        margin-top: 10px !important;
        display: block !important;
        text-align: center !important;
    }
}

@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 36px !important;
    }

    .hero-section p {
        font-size: 18px !important;
    }

    section h2 {
        font-size: 28px !important;
    }

    .toc-buttons {
        flex-direction: column;
    }

    .toc-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 17px;
    }

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

    .hero-section h1 {
        font-size: 30px !important;
    }

    .hero-section p {
        font-size: 17px !important;
    }

    section h2 {
        font-size: 24px !important;
    }

    .content-card {
        padding: 20px;
    }
}