/* 
   ==========================================
   THEME CONFIGURATION
   ==========================================
*/

/* 1. Light Theme (Default) */
:root {
    --bg-color: #f8fafc;
    --bg-secondary: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --accent-color: #0ea5e9;
    /* Sky Blue */
    --accent-glow: rgba(14, 165, 233, 0.2);
    --card-bg: #ffffff;
    --code-bg: #f1f5f9;
    --border-color: rgba(0, 0, 0, 0.08);
    --navbar-bg: rgba(255, 255, 255, 0.8);
    --pre-bg: #282c34;
    /* Code blocks usually look better dark */
    --pre-color: #abb2bf;
    --badge-bg: #0ea5e9;
}

/* 2. Dark Theme */
[data-theme="dark"] {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-color: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.2);
    --card-bg: rgba(30, 41, 59, 0.7);
    --code-bg: #020617;
    --border-color: rgba(255, 255, 255, 0.1);
    --navbar-bg: rgba(15, 23, 42, 0.8);
}

/* 
   ==========================================
   BASE STYLES
   ==========================================
*/

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Navbar */
.navbar-custom {
    background: var(--navbar-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

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

.nav-link.active {
    background-color: var(--accent-color);
    color: #000 !important;
    font-weight: 600;
    border: none;
}

.navbar_offset {
    margin-top: 60px;
}

/* Buttons (Theme & Lang) */
.btn-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    min-width: 38px;
    height: 38px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s;
    font-size: 0.85rem;
    font-weight: 600;
}

.btn-toggle:hover {
    background: var(--accent-glow);
    border-color: var(--accent-color);
    color: var(--accent-color);
}



/* Simulator Badge */
.simulator-badge-container {
    padding-top: 1rem;
    text-align: center;
}

.simulator-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color), #6366f1);
    color: #fff;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 2rem 0 4rem 0;
    background: radial-gradient(circle at top center, var(--bg-secondary) 0%, var(--bg-color) 70%);
}

.img-title {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.15));
    border-radius: 8px;
}

h1.display-1 {
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-top: 1.5rem;
    letter-spacing: -1px;
}

/* Typography */
h2.display-6 {
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
}

h3.display-7 {
    font-weight: 600;
    color: var(--accent-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.lead {
    color: var(--text-muted);
    font-weight: 400;
}

/* Content Sections */
.content-section {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
}

.content-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
}

.content-card:hover {
    transform: translateY(-2px);
    border-color: rgba(14, 165, 233, 0.3);
}

/* Specific Box Styles */
.info-box {
    background: var(--accent-glow);
    border: 1px solid var(--border-color);
}

.highlight-card {
    border-left: 5px solid var(--accent-color);
}

/* Code Blocks */
pre {
    background: var(--pre-bg) !important;
    border-radius: 8px;
    padding: 1.5rem !important;
    border: 1px solid var(--border-color);
    overflow-x: auto;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--pre-color);
}

code {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-color);
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.2s ease-in-out;
}

a:hover {
    color: #0284c7;
    text-decoration: underline;
}

/* List Styles */
ol.lead {
    list-style: none;
    counter-reset: item;
    padding-left: 0;
}

ol.lead li {
    counter-increment: item;
    margin-bottom: 0.5rem;
    padding-left: 2rem;
    position: relative;
    color: var(--text-muted);
}

ol.lead li::before {
    content: counter(item);
    position: absolute;
    left: 0;
    top: 2px;
    background: var(--accent-color);
    color: #fff;
    font-weight: bold;
    border-radius: 50%;
    width: 1.5rem;
    height: 1.5rem;
    text-align: center;
    line-height: 1.5rem;
    font-size: 0.8rem;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Highlight color adjustments for light mode text */
.hljs-string {
    color: #98c379;
}

.hljs-number {
    color: #d19a66;
}

.hljs-built_in {
    color: #e6c07b;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    h1.display-1 {
        font-size: 2.5rem;
    }

    .content-card {
        padding: 1.5rem;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 0 0 2rem 0;
    /* Убрали верхний отступ, так как картинка теперь вплотную к навбару */
    background: radial-gradient(circle at top center, var(--bg-secondary) 0%, var(--bg-color) 70%);
}

/* Full Width Image */
.img-title-full {
    width: 100%;
    height: auto;
    display: block;
    /* Тень для красоты */
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* Content Width (80%) */
.col-content {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

/* Адаптивность для новой ширины */
@media (max-width: 992px) {
    .col-content {
        width: 90%;
    }
}

@media (max-width: 768px) {
    .col-content {
        width: 100%;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    h1.display-1 {
        font-size: 2.5rem;
    }
}