/* Core Styles for Rio-2000.ru */
/* Primary: Blush Pink (#E8A4B8) | Accent: Graphite Gray (#4A4A4A) */

@import url('https://fonts.googleapis.com/css2?family=Public+Sans:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/icon?family=Material+Icons');

/* ===== CSS Variables ===== */
:root {
    --primary-color: #E8A4B8;
    --primary-dark: #D4899E;
    --accent-color: #4A4A4A;
    --accent-light: #6A6A6A;
    --text-dark: #2D2D2D;
    --text-light: #FFFFFF;
    --bg-light: #FDF8F9;
    --bg-section: #FAF0F2;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Public Sans', sans-serif !important;
    font-size: 18px !important;
    line-height: 1.7 !important;
    color: var(--text-dark) !important;
    background-color: var(--bg-light) !important;
}

/* ===== Bootstrap Overrides ===== */
.navbar-nav {
    margin-bottom: 0 !important;
    margin-top: 0 !important;
    list-style: none !important;
}

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

.nav-item {
    margin-bottom: 0 !important;
    list-style: none !important;
}

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

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Public Sans', sans-serif !important;
    font-weight: 700 !important;
    color: var(--accent-color) !important;
    margin-bottom: 1rem !important;
}

h1 {
    font-size: 2.5rem !important;
    line-height: 1.2 !important;
}

h2 {
    font-size: 1.875rem !important;
    line-height: 1.3 !important;
    margin-top: 2rem !important;
    padding-bottom: 0.5rem !important;
    border-bottom: 3px solid var(--primary-color) !important;
}

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

p {
    font-size: 18px !important;
    margin-bottom: 1rem !important;
    color: var(--text-dark) !important;
}

/* ===== Navigation ===== */
.navbar {
    background-color: var(--accent-color) !important;
    padding: 1rem 0 !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1) !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
}

.navbar-brand {
    color: var(--text-light) !important;
    font-weight: 700 !important;
    font-size: 1.5rem !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    text-decoration: none !important;
}

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

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

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500 !important;
    font-size: 16px !important;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease !important;
}

.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='%23E8A4B8' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

.btn-cta-nav {
    background-color: var(--primary-color) !important;
    color: var(--text-dark) !important;
    border: none !important;
    border-radius: 25px !important;
    padding: 0.5rem 1.5rem !important;
    font-weight: 600 !important;
    white-space: nowrap !important;
    transition: all 0.3s ease !important;
}

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

/* ===== Hero Section ===== */
.hero-section {
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    position: relative !important;
    padding: 100px 0 !important;
    min-height: 500px !important;
    display: flex !important;
    align-items: center !important;
}

.hero-section::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background: linear-gradient(135deg, rgba(74, 74, 74, 0.9) 0%, rgba(74, 74, 74, 0.7) 100%) !important;
    z-index: 1 !important;
}

.hero-content {
    position: relative !important;
    z-index: 2 !important;
    color: var(--text-light) !important;
    max-width: 800px !important;
}

.hero-section h1 {
    color: var(--text-light) !important;
    font-size: 3rem !important;
    margin-bottom: 1.5rem !important;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3) !important;
}

.hero-section p {
    color: var(--text-light) !important;
    font-size: 1.25rem !important;
    margin-bottom: 2rem !important;
    opacity: 0.95 !important;
}

.btn-hero {
    background-color: var(--primary-color) !important;
    color: var(--text-dark) !important;
    border: none !important;
    border-radius: 30px !important;
    padding: 1rem 2.5rem !important;
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    white-space: nowrap !important;
    transition: all 0.3s ease !important;
    display: inline-block !important;
    text-decoration: none !important;
}

.btn-hero:hover {
    background-color: var(--primary-dark) !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 10px 30px rgba(232, 164, 184, 0.4) !important;
    color: var(--text-dark) !important;
}

/* ===== Table of Contents ===== */
.toc-section {
    background-color: var(--bg-section) !important;
    padding: 2rem 0 !important;
}

.toc-buttons {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 1rem !important;
    justify-content: center !important;
}

.btn-toc {
    border: 2px solid var(--accent-color) !important;
    background-color: transparent !important;
    color: var(--accent-color) !important;
    border-radius: 25px !important;
    padding: 0.6rem 1.5rem !important;
    font-weight: 500 !important;
    white-space: nowrap !important;
    transition: all 0.3s ease !important;
    text-decoration: none !important;
}

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

/* ===== Content Sections ===== */
.content-section {
    padding: 4rem 0 !important;
}

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

/* ===== Cards ===== */
.info-card {
    background: var(--text-light) !important;
    border-radius: 15px !important;
    padding: 2rem !important;
    margin-bottom: 2rem !important;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08) !important;
    transition: transform 0.3s ease !important;
    border-left: 4px solid var(--primary-color) !important;
}

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

.info-card h2 {
    border-bottom: none !important;
    margin-top: 0 !important;
}

/* ===== Lists ===== */
ul, ol {
    list-style: none !important;
    padding-left: 0 !important;
    margin-bottom: 1.5rem !important;
}

.content-section ul li,
.content-section ol li,
main ul li,
main ol li,
.main-content ul li,
.main-content ol li {
    position: relative !important;
    padding-left: 2rem !important;
    margin-bottom: 0.75rem !important;
    font-size: 18px !important;
}

.content-section ul li::before,
main ul li::before,
.main-content ul li::before {
    content: '\e5cc' !important;
    font-family: 'Material Icons' !important;
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    color: var(--accent-color) !important;
    font-size: 1.2rem !important;
}

.content-section ol,
main ol,
.main-content ol {
    counter-reset: item !important;
}

.content-section ol li,
main ol li,
.main-content ol li {
    counter-increment: item !important;
}

.content-section ol li::before,
main ol li::before,
.main-content ol li::before {
    content: counter(item) !important;
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    background-color: var(--accent-color) !important;
    color: var(--text-light) !important;
    width: 24px !important;
    height: 24px !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 14px !important;
    font-weight: 600 !important;
}

/* Footer and Nav lists override */
footer ul,
footer ol,
footer li,
.navbar ul,
.navbar ol,
.navbar li,
.footer ul,
.footer ol,
.footer li,
nav ul,
nav ol,
nav li {
    list-style: none !important;
    padding-left: 0 !important;
}

footer ul li::before,
footer ol li::before,
.navbar ul li::before,
.navbar ol li::before,
.footer ul li::before,
.footer ol li::before,
nav ul li::before,
nav ol li::before {
    display: none !important;
    content: none !important;
}

footer li,
.navbar li,
.footer li,
nav li {
    padding-left: 0 !important;
}

/* ===== Tables ===== */
.table-responsive {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    margin-bottom: 1.5rem !important;
}

table {
    width: 100% !important;
    border-collapse: collapse !important;
    background: var(--text-light) !important;
    border-radius: 10px !important;
    overflow: hidden !important;
}

th {
    background-color: var(--accent-color) !important;
    color: var(--text-light) !important;
    padding: 1rem !important;
    text-align: left !important;
    font-weight: 600 !important;
}

td {
    padding: 1rem !important;
    border-bottom: 1px solid #eee !important;
}

tr:hover {
    background-color: var(--bg-section) !important;
}

/* ===== Images ===== */
.content-section img,
main img,
.main-content img {
    max-width: 100% !important;
    height: auto !important;
    border-radius: 15px !important;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1) !important;
    margin: 1.5rem 0 !important;
    display: block !important;
}

.img-fluid {
    max-width: 100% !important;
    height: auto !important;
}

/* ===== Conversion Buttons ===== */
.btn-conversion {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    color: var(--text-dark) !important;
    border: none !important;
    border-radius: 30px !important;
    padding: 1rem 2.5rem !important;
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    white-space: nowrap !important;
    transition: all 0.3s ease !important;
    display: inline-block !important;
    text-decoration: none !important;
    text-align: center !important;
}

.btn-conversion:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 10px 30px rgba(232, 164, 184, 0.4) !important;
    color: var(--text-dark) !important;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--accent-color) !important;
    color: var(--text-light) !important;
    padding: 4rem 0 2rem !important;
}

.footer h5 {
    color: var(--primary-color) !important;
    font-weight: 600 !important;
    margin-bottom: 1.5rem !important;
}

.footer p {
    color: var(--text-light) !important;
    opacity: 0.9 !important;
    font-size: 16px !important;
}

.footer a {
    color: var(--text-light) !important;
    text-decoration: none !important;
    transition: color 0.3s ease !important;
    display: block !important;
    padding: 0.3rem 0 !important;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1) !important;
    padding-top: 2rem !important;
    margin-top: 2rem !important;
    text-align: center !important;
}

.footer-bottom p {
    margin-bottom: 0 !important;
    font-size: 14px !important;
    opacity: 0.8 !important;
}

/* ===== Material Icons ===== */
.material-icons {
    color: var(--accent-color) !important;
    vertical-align: middle !important;
    margin-right: 0.5rem !important;
}

.icon-primary {
    color: var(--primary-color) !important;
}

/* ===== Animations ===== */
@keyframes waveAnimation {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(-10px);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes floatAnimation {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulseAnimation {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-wave {
    animation: waveAnimation 3s ease-in-out infinite !important;
}

.animate-float {
    animation: floatAnimation 4s ease-in-out infinite !important;
}

.animate-pulse {
    animation: pulseAnimation 2s ease-in-out infinite !important;
}

/* Decorative animated elements */
.decoration-circle {
    position: absolute !important;
    width: 100px !important;
    height: 100px !important;
    border-radius: 50% !important;
    background: var(--primary-color) !important;
    opacity: 0.1 !important;
    animation: floatAnimation 6s ease-in-out infinite !important;
}

.decoration-wave {
    position: absolute !important;
    width: 200px !important;
    height: 50px !important;
    background: var(--primary-color) !important;
    opacity: 0.05 !important;
    border-radius: 50% !important;
    animation: waveAnimation 4s ease-in-out infinite !important;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    h1 {
        font-size: 2rem !important;
    }

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

    .hero-section h1 {
        font-size: 2.5rem !important;
    }

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

@media (max-width: 768px) {
    body {
        font-size: 16px !important;
    }

    h1 {
        font-size: 1.75rem !important;
    }

    h2 {
        font-size: 1.375rem !important;
    }

    .hero-section h1 {
        font-size: 2rem !important;
    }

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

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

    .content-section {
        padding: 3rem 0 !important;
    }

    .btn-hero,
    .btn-conversion {
        padding: 0.875rem 2rem !important;
        font-size: 1rem !important;
    }

    .toc-buttons {
        flex-direction: column !important;
        align-items: center !important;
    }

    .btn-toc {
        width: 100% !important;
        max-width: 300px !important;
        text-align: center !important;
    }

    .navbar-collapse {
        background-color: var(--accent-color) !important;
        padding: 1rem !important;
        margin-top: 1rem !important;
        border-radius: 10px !important;
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 1.75rem !important;
    }

    .footer .row > div {
        margin-bottom: 2rem !important;
    }

    .info-card {
        padding: 1.5rem !important;
    }
}